* cyglsa.h: New header file.

* environ.cc: Disable subauth settings.
	* grp.cc: Accomodate cygsidlist's count now being a method.
	* sec_helper.cc (SECURITY_MANDATORY_INTEGRITY_AUTHORITY): Remove.
	(mandatory_medium_integrity_sid): Remove.
	(mandatory_high_integrity_sid): Remove.
	(mandatory_system_integrity_sid): Remove.
	(fake_logon_sid): Add.
	(cygsid::get_sid): Add well_known parameter.  Set well_known_sid
	accordingly.
	(cygsid::getfromstr): Ditto.
	(cygsidlist::alloc_sids): Move here from security.cc.
	(cygsidlist::free_sids): Ditto.
	(cygsidlist::add): Move here from security.h.  Add well_known parameter.
	Set well_known_sid accordingly.  Don't allow duplicate SIDs.
	* security.cc: Include cyglsa.h and cygwin/version.h.  Throughout
	accomodate cygsidlist's count now being a method.  Throughout drop
	redundant "contains" tests.
	(get_user_local_groups): Add local groups as well known SIDs.
	(get_token_group_sidlist): Add well known groups as well known SIDs.
	(get_server_groups): Ditto.  Only call get_unix_group_sidlist after
	get_user_local_groups to maintain "well_known_sid" attribute.
	(get_initgroups_sidlist): Add well known groups as well known SIDs.
	(get_setgroups_sidlist): Add usersid and struct passwd parameter to
	allow calling get_server_groups from here.
	(get_system_priv_list): Make static.  Return size of TOKEN_PRIVILEGES
	structure.
	(get_priv_list): Ditto.
	(create_token): Accomodate above changes.  Drop misguided attempt to
	add MIC SIDs to created user token.  Print returned token as hex value.
	(subauth): Disable.
	(lsaauth): New function implementing client side of LSA authentication.
	* security.h (class cygsid): Add well_known_sid attribute.  Accomodate
	throughout.  Add *= operator to create a well known SID.
	(class cygsidlist): Rename count to cnt.  Make count a method.
	(cygsidlist::add): Move to sec_helper.cc.
	(cygsidlist::operator *=): New method to add well known SID.
	(cygsidlist::non_well_known_count): New method returning number of
	non well known SIDs in list.
	(cygsidlist::next_non_well_known_sid): New method returning next non
	well known SID by index.
	(mandatory_medium_integrity_sid): Drop declaration.
	(mandatory_high_integrity_sid): Drop declaration.
	(mandatory_system_integrity_sid): Drop declaration.
	(fake_logon_sid): Add declaration.
	(subauth): Disable declaration.
	(lsaauth): Add declaration.
	* syscalls.cc (seteuid32): Disable subauthentication.  Add LSA
	authentication.
	* wincap.h: Define needs_logon_sid_in_sid_list throughout.
	* wincap.cc: Ditto.

winsup/cygwin/sec_helper.cc

@@ -67,15 +67,8 @@ MKSID (well_known_system_sid, "S-1-5-18",
 MKSID (well_known_admins_sid, "S-1-5-32-544",
        SECURITY_NT_AUTHORITY, 2, SECURITY_BUILTIN_DOMAIN_RID,
 				 DOMAIN_ALIAS_RID_ADMINS);
-
-#define SECURITY_MANDATORY_INTEGRITY_AUTHORITY       {0,0,0,0,0,16}
-
-MKSID (mandatory_medium_integrity_sid, "S-1-64-8192",
-       SECURITY_MANDATORY_INTEGRITY_AUTHORITY, 1, 8192);
-MKSID (mandatory_high_integrity_sid, "S-1-64-12288",
-       SECURITY_MANDATORY_INTEGRITY_AUTHORITY, 1, 12288);
-MKSID (mandatory_system_integrity_sid, "S-1-64-16384",
-       SECURITY_MANDATORY_INTEGRITY_AUTHORITY, 1, 16384);
+MKSID (fake_logon_sid, "S-1-5-5-0-0",
+       SECURITY_NT_AUTHORITY, 3, SECURITY_LOGON_IDS_RID, 0, 0);
 
 bool
 cygpsid::operator== (const char *nsidstr) const
@@ -135,7 +128,7 @@ cygpsid::string (char *nsidstr) const
 }
 
 PSID
-cygsid::get_sid (DWORD s, DWORD cnt, DWORD *r)
+cygsid::get_sid (DWORD s, DWORD cnt, DWORD *r, bool well_known)
 {
   DWORD i;
   SID_IDENTIFIER_AUTHORITY sid_auth = {0,0,0,0,0,0};
@@ -150,11 +143,12 @@ cygsid::get_sid (DWORD s, DWORD cnt, DWORD *r)
   InitializeSid (psid, &sid_auth, cnt);
   for (i = 0; i < cnt; ++i)
     memcpy ((char *) psid + 8 + sizeof (DWORD) * i, &r[i], sizeof (DWORD));
+  well_known_sid = well_known;
   return psid;
 }
 
 const PSID
-cygsid::getfromstr (const char *nsidstr)
+cygsid::getfromstr (const char *nsidstr, bool well_known)
 {
   char *lasts;
   DWORD s, cnt = 0;
@@ -166,7 +160,7 @@ cygsid::getfromstr (const char *nsidstr)
       while (cnt < 8 && *lasts == '-')
 	r[cnt++] = strtoul (lasts + 1, &lasts, 10);
       if (!*lasts)
-	return get_sid (s, cnt, r);
+	return get_sid (s, cnt, r, well_known);
     }
   return psid = NO_SID;
 }
@@ -185,6 +179,48 @@ cygsid::getfromgr (const struct __group32 *gr)
   return (*this = sp) != NULL;
 }
 
+cygsid *
+cygsidlist::alloc_sids (int n)
+{
+  if (n > 0)
+    return (cygsid *) cmalloc (HEAP_STR, n * sizeof (cygsid));
+  else
+    return NULL;
+}
+
+void
+cygsidlist::free_sids ()
+{
+  if (sids)
+    cfree (sids);
+  sids = NULL;
+  cnt = maxcnt = 0;
+  type = cygsidlist_empty;
+}
+
+BOOL
+cygsidlist::add (const PSID nsi, bool well_known)
+{ 
+  if (contains (nsi)) 
+    return TRUE;
+  if (cnt >= maxcnt)
+    {
+      cygsid *tmp = new cygsid [2 * maxcnt];
+      if (!tmp) 
+	return FALSE;
+      maxcnt *= 2;
+      for (int i = 0; i < cnt; ++i)
+	tmp[i] = sids[i];
+      delete [] sids;
+      sids = tmp;
+    }
+  if (well_known) 
+    sids[cnt++] *= nsi;
+  else
+    sids[cnt++] = nsi;
+  return TRUE;
+} 
+
 bool
 get_sids_info (cygpsid owner_sid, cygpsid group_sid, __uid32_t * uidret, __gid32_t * gidret)
 {