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* autoload.cc (NetLocalGroupGetInfo): Replace NetGroupGetInfo. 

* cygheap.h (class cygheap_ugid_cache): Move ugid_cache_t type here
	and rename.
	(struct init_cygheap): Add cygheap_ugid_cache member "ugid_cache".
	* pwdgrp.h (class ugid_cache_t): Remove here.
	* fhandler_disk_file.cc (fhandler_base::fstat_by_nfs_ea): Accommodate
	move of ugid_cache to cygheap.
	* sec_helper.cc (get_sids_info): Ditto.
	* uinfo.cc (ugid_cache): Remove.
	(pwdgrp::fetch_account_from_windows): Define id_val globally.
	Move SidTypeAlias handling into SidTypeUser/SidTypeGroup branch since
	aliases are handled like groups in SAM.  Accommodate move of ugid_cache
	to cygheap.  Consolidate code reading SAM comments into a single branch
	for both, SidTypeUser and SidTypeAlias.  For SidTypeAlias, fix thinko
	and call NetLocalGroupGetInfo rather than NetGroupGetInfo.  Simplify
	code setting Cygwin primary group for SAM accounts.  Add code to handle
	UNIX uid/gid from SAM comment.
This commit is contained in:
Corinna Vinschen 2014-02-11 11:51:29 +00:00
parent 026a2445d1
commit 7fa5cbbfcd
7 changed files with 189 additions and 178 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,23 @@
2014-02-11 Corinna Vinschen <corinna@vinschen.de>
* autoload.cc (NetLocalGroupGetInfo): Replace NetGroupGetInfo.
* cygheap.h (class cygheap_ugid_cache): Move ugid_cache_t type here
and rename.
(struct init_cygheap): Add cygheap_ugid_cache member "ugid_cache".
* pwdgrp.h (class ugid_cache_t): Remove here.
* fhandler_disk_file.cc (fhandler_base::fstat_by_nfs_ea): Accommodate
move of ugid_cache to cygheap.
* sec_helper.cc (get_sids_info): Ditto.
* uinfo.cc (ugid_cache): Remove.
(pwdgrp::fetch_account_from_windows): Define id_val globally.
Move SidTypeAlias handling into SidTypeUser/SidTypeGroup branch since
aliases are handled like groups in SAM. Accommodate move of ugid_cache
to cygheap. Consolidate code reading SAM comments into a single branch
for both, SidTypeUser and SidTypeAlias. For SidTypeAlias, fix thinko
and call NetLocalGroupGetInfo rather than NetGroupGetInfo. Simplify
code setting Cygwin primary group for SAM accounts. Add code to handle
UNIX uid/gid from SAM comment.
2014-02-11 Christopher Faylor <me.cygwin2014@cgf.cx>
* winsup.h (Interlocked*): Use intrinsic versions of Interlocked

2
winsup/cygwin/autoload.cc
View File

@ -610,7 +610,7 @@ LoadDLLfunc (WNetOpenEnumA, 20, mpr)
LoadDLLfunc (DsEnumerateDomainTrustsW, 16, netapi32)
LoadDLLfunc (DsGetDcNameW, 24, netapi32)
LoadDLLfunc (NetApiBufferFree, 4, netapi32)
LoadDLLfunc (NetGroupGetInfo, 16, netapi32)
LoadDLLfunc (NetLocalGroupGetInfo, 16, netapi32)
LoadDLLfunc (NetUseGetInfo, 16, netapi32)
LoadDLLfunc (NetUserGetGroups, 28, netapi32)
LoadDLLfunc (NetUserGetInfo, 16, netapi32)

38
winsup/cygwin/cygheap.h
View File

@ -434,6 +434,43 @@ public:
inline bool nss_db_caching () const { return caching; }
};
class cygheap_ugid_cache
{
struct idmap {
uint32_t nfs_id;
uint32_t cyg_id;
};
class idmaps {
uint32_t _cnt;
uint32_t _max;
idmap *_map;
public:
uint32_t get (uint32_t id) const
{
for (uint32_t i = 0; i < _cnt; ++i)
if (_map[i].nfs_id == id)
return _map[i].cyg_id;
return (uint32_t) -1;
}
void add (uint32_t nfs_id, uint32_t cyg_id)
{
if (_cnt >= _max)
_map = (idmap *) crealloc (_map, (_max += 10) * sizeof (*_map));
_map[_cnt].nfs_id = nfs_id;
_map[_cnt].cyg_id = cyg_id;
++_cnt;
}
};
idmaps uids;
idmaps gids;
public:
uid_t get_uid (uid_t uid) const { return uids.get (uid); }
gid_t get_gid (gid_t gid) const { return gids.get (gid); }
void add_uid (uid_t nfs_uid, uid_t cyg_uid) { uids.add (nfs_uid, cyg_uid); }
void add_gid (gid_t nfs_gid, gid_t cyg_gid) { gids.add (nfs_gid, cyg_gid); }
};
struct hook_chain
{
void **loc;
@ -459,6 +496,7 @@ struct init_cygheap: public mini_cygheap
cygheap_root root;
cygheap_domain_info dom;
cygheap_pwdgrp pg;
cygheap_ugid_cache ugid_cache;
cygheap_user user;
user_heap_info user_heap;
mode_t umask;

8
winsup/cygwin/fhandler_disk_file.cc
View File

@ -347,8 +347,8 @@ fhandler_base::fstat_by_nfs_ea (struct stat *buf)
the cache, try to fetch it from the configured RFC 2307 domain (see
last comment in cygheap_domain_info::init() for more information) and
add it to the mapping cache. */
buf->st_uid = ugid_cache.get_uid (nfs_attr->uid);
buf->st_gid = ugid_cache.get_gid (nfs_attr->gid);
buf->st_uid = cygheap->ugid_cache.get_uid (nfs_attr->uid);
buf->st_gid = cygheap->ugid_cache.get_gid (nfs_attr->gid);
if (buf->st_uid == ILLEGAL_UID)
{
uid_t map_uid = ILLEGAL_UID;
@ -358,7 +358,7 @@ fhandler_base::fstat_by_nfs_ea (struct stat *buf)
map_uid = cldap.remap_uid (nfs_attr->uid);
if (map_uid == ILLEGAL_UID)
map_uid = MAP_UNIX_TO_CYGWIN_ID (nfs_attr->uid);
ugid_cache.add_uid (nfs_attr->uid, map_uid);
cygheap->ugid_cache.add_uid (nfs_attr->uid, map_uid);
buf->st_uid = map_uid;
}
if (buf->st_gid == ILLEGAL_GID)
@ -370,7 +370,7 @@ fhandler_base::fstat_by_nfs_ea (struct stat *buf)
map_gid = cldap.remap_gid (nfs_attr->gid);
if (map_gid == ILLEGAL_GID)
map_gid = MAP_UNIX_TO_CYGWIN_ID (nfs_attr->gid);
ugid_cache.add_gid (nfs_attr->gid, map_gid);
cygheap->ugid_cache.add_gid (nfs_attr->gid, map_gid);
buf->st_gid = map_gid;
}
buf->st_rdev = makedev (nfs_attr->rdev.specdata1,

39
winsup/cygwin/pwdgrp.h
View File

@ -141,42 +141,3 @@ public:
struct group *find_group (const char *name);
struct group *find_group (gid_t gid);
};
class ugid_cache_t
{
struct idmap {
uint32_t nfs_id;
uint32_t cyg_id;
};
class idmaps {
uint32_t _cnt;
uint32_t _max;
idmap *_map;
public:
idmaps () : _cnt (0), _max (0), _map (NULL) {}
uint32_t get (uint32_t id) const
{
for (uint32_t i = 0; i < _cnt; ++i)
if (_map[i].nfs_id == id)
return _map[i].cyg_id;
return (uint32_t) -1;
}
void add (uint32_t nfs_id, uint32_t cyg_id)
{
if (_cnt >= _max)
_map = (idmap *) realloc (_map, (_max += 10) * sizeof (*_map));
_map[_cnt].nfs_id = nfs_id;
_map[_cnt].cyg_id = cyg_id;
++_cnt;
}
};
idmaps uids;
idmaps gids;
public:
uid_t get_uid (uid_t uid) const { return uids.get (uid); }
gid_t get_gid (gid_t gid) const { return gids.get (gid); }
void add_uid (uid_t nfs_uid, uid_t cyg_uid) { uids.add (nfs_uid, cyg_uid); }
void add_gid (gid_t nfs_gid, gid_t cyg_gid) { gids.add (nfs_gid, cyg_gid); }
};
extern ugid_cache_t ugid_cache;

8
winsup/cygwin/sec_helper.cc
View File

@ -314,7 +314,7 @@ get_sids_info (cygpsid owner_sid, cygpsid group_sid, uid_t * uidret, gid_t * gid
last comment in cygheap_domain_info::init() for more information) and
add it to the mapping cache. */
gid_t gid = sid_sub_auth_rid (group_sid);
gid_t map_gid = ugid_cache.get_gid (gid);
gid_t map_gid = cygheap->ugid_cache.get_gid (gid);
if (map_gid == ILLEGAL_GID)
{
domain = cygheap->dom.get_rfc2307_domain ();
@ -322,7 +322,7 @@ get_sids_info (cygpsid owner_sid, cygpsid group_sid, uid_t * uidret, gid_t * gid
map_gid = cldap.remap_gid (gid);
if (map_gid == ILLEGAL_GID)
map_gid = MAP_UNIX_TO_CYGWIN_ID (gid);
ugid_cache.add_gid (gid, map_gid);
cygheap->ugid_cache.add_gid (gid, map_gid);
}
*gidret = map_gid;
}
@ -343,7 +343,7 @@ get_sids_info (cygpsid owner_sid, cygpsid group_sid, uid_t * uidret, gid_t * gid
{
/* Samba UNIX user. See comment above. */
uid_t uid = sid_sub_auth_rid (owner_sid);
uid_t map_uid = ugid_cache.get_uid (uid);
uid_t map_uid = cygheap->ugid_cache.get_uid (uid);
if (map_uid == ILLEGAL_UID)
{
domain = cygheap->dom.get_rfc2307_domain ();
@ -351,7 +351,7 @@ get_sids_info (cygpsid owner_sid, cygpsid group_sid, uid_t * uidret, gid_t * gid
map_uid = cldap.remap_uid (uid);
if (map_uid == ILLEGAL_UID)
map_uid = MAP_UNIX_TO_CYGWIN_ID (uid);
ugid_cache.add_uid (uid, map_uid);
cygheap->ugid_cache.add_uid (uid, map_uid);
}
*uidret = map_uid;
}

252
winsup/cygwin/uinfo.cc
View File

@ -548,8 +548,6 @@ pwdgrp::add_line (char *eptr)
return eptr;
}
ugid_cache_t ugid_cache;
void
cygheap_pwdgrp::init ()
{
@ -1100,6 +1098,7 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
WCHAR sidstr[128];
/* Temporary stuff. */
ULONG posix_offset = 0;
uint32_t id_val;
cyg_ldap cldap;
bool ldap_open = false;
@ -1240,8 +1239,6 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
Skip primary domain. */
if (!td->PosixOffset && !(td->Flags & DS_DOMAIN_PRIMARY))
{
uint32_t id_val;
if (!ldap_open && !(ldap_open = cldap.open (NULL)))
id_val = cygheap->dom.lowest_tdo_posix_offset
- 0x01000000;
@ -1287,18 +1284,29 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
if a process is running as LocalSystem service. */
if (acc_type == SidTypeUser && sid_sub_auth_count (sid) <= 3)
acc_type = SidTypeWellKnownGroup;
/* Alias? There are two types, the builtin aliases like "Administrators"
and the local groups in SAM. Handle local groups as groups. */
else if (acc_type == SidTypeAlias
&& sid_sub_auth (sid, 0) == SECURITY_NT_NON_UNIQUE)
acc_type = SidTypeGroup;
switch (acc_type)
{
case SidTypeUser:
case SidTypeGroup:
case SidTypeAlias:
/* Predefined alias? */
if (acc_type == SidTypeAlias
&& sid_sub_auth (sid, 0) != SECURITY_NT_NON_UNIQUE)
{
#ifdef INTERIX_COMPATIBLE
posix_offset = 0x30000;
uid = 0x1000 * sid_sub_auth (sid, 0)
+ (sid_sub_auth_rid (sid) & 0xffff);
#else
posix_offset = 0;
#endif
name_style = (cygheap->pg.nss_prefix_always ()) ? fully_qualified
: plus_prepended;
domain = cygheap->dom.account_flat_name ();
is_domain_account = false;
}
/* Account domain account? */
if (!wcscmp (dom, cygheap->dom.account_flat_name ()))
else if (!wcscmp (dom, cygheap->dom.account_flat_name ()))
{
posix_offset = 0x30000;
if (cygheap->dom.member_machine ()
@ -1345,8 +1353,6 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
fetch it. */
if (!posix_offset)
{
uint32_t id_val;
if (!ldap_open && !(ldap_open = cldap.open (NULL)))
{
/* We're probably running under a local account,
@ -1385,7 +1391,8 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
return NULL;
}
/* Generate values. */
uid = posix_offset + sid_sub_auth_rid (sid);
if (uid == ILLEGAL_UID)
uid = posix_offset + sid_sub_auth_rid (sid);
gid = posix_offset + DOMAIN_GROUP_RID_USERS; /* Default. */
if (is_domain_account)
@ -1396,9 +1403,7 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
if (cldap.fetch_ad_account (sid, group))
{
PWCHAR val;
uint32_t id_val;
if (!group)
if (acc_type == SidTypeUser)
{
if ((id_val = cldap.get_primary_gid ()) != ILLEGAL_GID)
gid = posix_offset + id_val;
@ -1419,10 +1424,11 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
id mapping on the fly. */
id_val = cldap.get_unix_uid ();
if (id_val != ILLEGAL_UID
&& ugid_cache.get_uid (id_val) == ILLEGAL_UID)
ugid_cache.add_uid (id_val, uid);
&& cygheap->ugid_cache.get_uid (id_val)
== ILLEGAL_UID)
cygheap->ugid_cache.add_uid (id_val, uid);
}
else
else /* SidTypeGroup */
{
if ((val = cldap.get_group_name ())
&& wcscmp (name, val))
@ -1430,136 +1436,124 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
* sizeof (WCHAR)), val);
id_val = cldap.get_unix_gid ();
if (id_val != ILLEGAL_GID
&& ugid_cache.get_gid (id_val) == ILLEGAL_GID)
ugid_cache.add_gid (id_val, uid);
&& cygheap->ugid_cache.get_gid (id_val)
== ILLEGAL_GID)
cygheap->ugid_cache.add_gid (id_val, uid);
}
}
}
/* Otherwise check account domain (local SAM).*/
else if (acc_type == SidTypeUser)
else
{
NET_API_STATUS nas;
PUSER_INFO_4 ui;
PLOCALGROUP_INFO_1 gi;
PCWSTR comment;
PWCHAR pgrp = NULL;
PWCHAR uxid = NULL;
struct {
PCWSTR str;
size_t len;
PWCHAR *tgt;
bool group;
} search[] = {
{ L"name=\"", 6, &user, true },
{ L"unix=\"", 6, &uxid, true },
{ L"home=\"", 6, &home, false },
{ L"shell=\"", 7, &shell, false },
{ L"group=\"", 7, &pgrp, false },
{ NULL, 0, NULL }
};
PWCHAR s, e;
nas = NetUserGetInfo (domain, name, 4, (PBYTE *) &ui);
if (nas != NERR_Success)
debug_printf ("NetUserGetInfo(%W,%W) %u", domain, name, nas);
else
if (acc_type == SidTypeUser)
{
PWCHAR pgrp = NULL;
struct {
PCWSTR str;
size_t len;
PWCHAR *tgt;
} search[] = {
{ L"name=\"", 6, &user },
{ L"home=\"", 6, &home },
{ L"shell=\"", 7, &shell },
{ L"group=\"", 7, &pgrp }
};
PWCHAR s, e;
/* Fetch primary group. */
gid = posix_offset + ui->usri4_primary_group_id;
/* Local SAM accounts have only a handful attributes
available to home users. Therefore, fetch different
Cygwin user name, Cygwin home dir, and Cygwin login
shell from the "Description" field in XML short
style. */
if ((s = wcsstr (ui->usri4_comment, L"<cygwin "))
&& (e = wcsstr (s + 8, L"/>")))
nas = NetUserGetInfo (NULL, name, 4, (PBYTE *) &ui);
if (nas != NERR_Success)
{
s += 8;
*e = L'\0';
while (*s)
{
while (*s == L' ')
++s;
for (size_t i = 0;
i < sizeof search / sizeof search[0];
++i)
if (!wcsncmp (s, search[i].str, search[i].len))
{
s += search[i].len;
if ((e = wcschr (s, L'"'))
&& (i > 0 || wcsncmp (name, s, e - s)))
{
*search[i].tgt =
(PWCHAR) alloca ((e - s + 1)
* sizeof (WCHAR));
*wcpncpy (*search[i].tgt, s, e - s) = L'\0';
s = e + 1;
}
else
{
*s = L'\0';
break;
}
}
}
debug_printf ("NetUserGetInfo(%W) %u", name, nas);
break;
}
NetApiBufferFree (ui);
if (pgrp)
/* Set comment variable for below attribute loop. */
comment = ui->usri4_comment;
}
else /* SidTypeGroup || SidTypeAlias */
{
nas = NetLocalGroupGetInfo (NULL, name, 1, (PBYTE *) &gi);
if (nas != NERR_Success)
{
/* For setting the primary group, we have to test all
three possible Cygwin name variations:
debug_printf ("NetLocalGroupGetInfo(%W) %u", name, nas);
break;
}
/* Set comment variable for below attribute loop. */
comment = gi->lgrpi1_comment;
}
/* Local SAM accounts have only a handful attributes
available to home users. Therefore, fetch additional
passwd/group attributes from the "Description" field
in XML short style. */
if ((s = wcsstr (comment, L"<cygwin "))
&& (e = wcsstr (s + 8, L"/>")))
{
s += 8;
*e = L'\0';
while (*s)
{
bool found = false;
MACHINE+group, +group, group
*/
char gname[2 * (DNLEN + UNLEN + 1)];
char *sep;
struct group *gr;
sep += sys_wcstombs (sep = gname, 2 * DNLEN + 1, domain);
*sep = cygheap->pg.nss_separator ()[0];
sys_wcstombs (sep + 1, 2 * UNLEN + 1, pgrp);
if ((gr = internal_getgrnam (gname))
|| (gr = internal_getgrnam (sep))
|| (gr = internal_getgrnam (sep + 1)))
gid = gr->gr_gid;
while (*s == L' ')
++s;
for (size_t i = 0; search[i].str; ++i)
if ((acc_type == SidTypeUser || search[i].group)
&& !wcsncmp (s, search[i].str, search[i].len))
{
s += search[i].len;
if ((e = wcschr (s, L'"'))
&& (i > 0 || wcsncmp (name, s, e - s)))
{
*search[i].tgt =
(PWCHAR) alloca ((e - s + 1)
* sizeof (WCHAR));
*wcpncpy (*search[i].tgt, s, e - s) = L'\0';
s = e + 1;
found = true;
}
else
break;
}
if (!found)
break;
}
}
}
else /* SidTypeGroup */
{
NET_API_STATUS nas;
PGROUP_INFO_3 gi;
nas = NetGroupGetInfo (domain, name, 3, (PBYTE *) &gi);
if (nas != NERR_Success)
debug_printf ("NetGroupGetInfo(%W,%W) %u", domain, name, nas);
if (acc_type == SidTypeUser)
NetApiBufferFree (ui);
else
NetApiBufferFree (gi);
if (pgrp)
{
PWCHAR s, e;
/* For setting the primary group, we have to test
with and without prepended separator. */
char gname[2 * UNLEN + 2];
struct group *gr;
/* Fetch different Cygwin group name from description. */
if ((s = wcsstr (gi->grpi3_comment, L"<cygwin "))
&& (e = wcsstr (s + 8, L"/>")))
*gname = cygheap->pg.nss_separator ()[0];
sys_wcstombs (gname + 1, 2 * UNLEN + 1, pgrp);
if ((gr = internal_getgrnam (gname))
|| (gr = internal_getgrnam (gname + 1)))
gid = gr->gr_gid;
}
if (uxid && ((id_val = wcstoul (uxid, &e, 10)), !*e))
{
if (acc_type == SidTypeUser)
{
s += 8;
*e = L'\0';
while (*s)
{
while (*s == L' ')
++s;
if (!wcsncmp (s, L"name=\"", 6))
{
s += 6;
if ((e = wcschr (s, L'"')))
{
*wcpncpy (name = namebuf, s, e - s) = L'\0';
s = e + 1;
}
else
break;
}
}
if (cygheap->ugid_cache.get_uid (id_val) == ILLEGAL_UID)
cygheap->ugid_cache.add_uid (id_val, uid);
}
NetApiBufferFree (gi);
else if (cygheap->ugid_cache.get_gid (id_val) == ILLEGAL_GID)
cygheap->ugid_cache.add_gid (id_val, uid);
}
}
break;
case SidTypeAlias:
case SidTypeWellKnownGroup:
name_style = (cygheap->pg.nss_prefix_always ()) ? fully_qualified
: plus_prepended;
@ -1569,8 +1563,7 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
{
uid = 0x1000 * sid_sub_auth (sid, 0)
+ (sid_sub_auth_rid (sid) & 0xffff);
if (sid_sub_auth (sid, 0) > SECURITY_BUILTIN_DOMAIN_RID)
name_style = fully_qualified;
name_style = fully_qualified;
}
else
uid = 0x10000 + 0x100 * sid_id_auth (sid)
@ -1585,7 +1578,6 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, bool group)
{
uid = 0x1000 * sid_sub_auth (sid, 0)
+ (sid_sub_auth_rid (sid) & 0xffff);
//name_style = fully_qualified;
}
#endif
/* Special case for "Everyone". We don't want to return Everyone