mirror of https://github.com/postgres/postgres
Minor code cleanups, make in_group() check faster.
This commit is contained in:
Tom Lane
parent
aceec9ae1a
commit
6be6a185d9
|
|
@ -8,7 +8,7 @@
|
|||
*
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $Header: /cvsroot/pgsql/src/backend/catalog/aclchk.c,v 1.41 2000/10/02 04:49:28 tgl Exp $
|
||||
* $Header: /cvsroot/pgsql/src/backend/catalog/aclchk.c,v 1.42 2000/11/03 19:02:18 tgl Exp $
|
||||
*
|
||||
* NOTES
|
||||
* See acl.h.
|
||||
|
|
@ -185,41 +185,40 @@ get_groname(AclId grosysid)
|
|||
static bool
|
||||
in_group(AclId uid, AclId gid)
|
||||
{
|
||||
Relation relation;
|
||||
HeapTuple tuple;
|
||||
Acl *tmp;
|
||||
Datum att;
|
||||
bool isNull;
|
||||
IdList *tmp;
|
||||
AclId *aidp;
|
||||
int i,
|
||||
num;
|
||||
AclId *aidp;
|
||||
bool found = false;
|
||||
|
||||
relation = heap_openr(GroupRelationName, RowExclusiveLock);
|
||||
tuple = SearchSysCacheTuple(GROSYSID,
|
||||
ObjectIdGetDatum(gid),
|
||||
0, 0, 0);
|
||||
if (HeapTupleIsValid(tuple) &&
|
||||
!heap_attisnull(tuple, Anum_pg_group_grolist))
|
||||
if (HeapTupleIsValid(tuple))
|
||||
{
|
||||
tmp = (IdList *) heap_getattr(tuple,
|
||||
Anum_pg_group_grolist,
|
||||
RelationGetDescr(relation),
|
||||
(bool *) NULL);
|
||||
/* be sure the IdList is not toasted */
|
||||
tmp = DatumGetIdListP(PointerGetDatum(tmp));
|
||||
/* XXX make me a function */
|
||||
num = IDLIST_NUM(tmp);
|
||||
aidp = IDLIST_DAT(tmp);
|
||||
for (i = 0; i < num; ++i)
|
||||
if (aidp[i] == uid)
|
||||
att = SysCacheGetAttr(GROSYSID,
|
||||
tuple,
|
||||
Anum_pg_group_grolist,
|
||||
&isNull);
|
||||
if (!isNull)
|
||||
{
|
||||
/* be sure the IdList is not toasted */
|
||||
tmp = DatumGetIdListP(att);
|
||||
/* scan it */
|
||||
num = IDLIST_NUM(tmp);
|
||||
aidp = IDLIST_DAT(tmp);
|
||||
for (i = 0; i < num; ++i)
|
||||
{
|
||||
found = true;
|
||||
break;
|
||||
if (aidp[i] == uid)
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
elog(NOTICE, "in_group: group %d not found", gid);
|
||||
heap_close(relation, RowExclusiveLock);
|
||||
return found;
|
||||
elog(NOTICE, "in_group: group %u not found", gid);
|
||||
return false;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -230,11 +229,10 @@ in_group(AclId uid, AclId gid)
|
|||
static int32
|
||||
aclcheck(char *relname, Acl *acl, AclId id, AclIdType idtype, AclMode mode)
|
||||
{
|
||||
unsigned i;
|
||||
AclItem *aip,
|
||||
*aidat;
|
||||
unsigned num,
|
||||
found_group;
|
||||
int i,
|
||||
num;
|
||||
|
||||
/*
|
||||
* If ACL is null, default to "OK" --- this should not happen,
|
||||
|
|
@ -252,17 +250,20 @@ aclcheck(char *relname, Acl *acl, AclId id, AclIdType idtype, AclMode mode)
|
|||
/*
|
||||
* We'll treat the empty ACL like that, too, although this is more
|
||||
* like an error (i.e., you manually blew away your ACL array) -- the
|
||||
* system never creates an empty ACL.
|
||||
* system never creates an empty ACL, since there must always be
|
||||
* a "world" entry in the first slot.
|
||||
*/
|
||||
if (num < 1)
|
||||
{
|
||||
elog(DEBUG, "aclcheck: zero-length ACL, returning 1");
|
||||
return ACLCHECK_OK;
|
||||
}
|
||||
Assert(aidat->ai_idtype == ACL_IDTYPE_WORLD);
|
||||
|
||||
switch (idtype)
|
||||
{
|
||||
case ACL_IDTYPE_UID:
|
||||
/* Look for exact match to user */
|
||||
for (i = 1, aip = aidat + 1; /* skip world entry */
|
||||
i < num && aip->ai_idtype == ACL_IDTYPE_UID;
|
||||
++i, ++aip)
|
||||
|
|
@ -270,34 +271,33 @@ aclcheck(char *relname, Acl *acl, AclId id, AclIdType idtype, AclMode mode)
|
|||
if (aip->ai_id == id)
|
||||
{
|
||||
#ifdef ACLDEBUG_TRACE
|
||||
elog(DEBUG, "aclcheck: found %d/%d",
|
||||
elog(DEBUG, "aclcheck: found user %u/%d",
|
||||
aip->ai_id, aip->ai_mode);
|
||||
#endif
|
||||
return (aip->ai_mode & mode) ? ACLCHECK_OK : ACLCHECK_NO_PRIV;
|
||||
}
|
||||
}
|
||||
for (found_group = 0;
|
||||
/* See if he has the permission via any group */
|
||||
for (;
|
||||
i < num && aip->ai_idtype == ACL_IDTYPE_GID;
|
||||
++i, ++aip)
|
||||
{
|
||||
if (in_group(id, aip->ai_id))
|
||||
if (aip->ai_mode & mode)
|
||||
{
|
||||
if (aip->ai_mode & mode)
|
||||
if (in_group(id, aip->ai_id))
|
||||
{
|
||||
found_group = 1;
|
||||
break;
|
||||
#ifdef ACLDEBUG_TRACE
|
||||
elog(DEBUG, "aclcheck: found group %u/%d",
|
||||
aip->ai_id, aip->ai_mode);
|
||||
#endif
|
||||
return ACLCHECK_OK;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (found_group)
|
||||
{
|
||||
#ifdef ACLDEBUG_TRACE
|
||||
elog(DEBUG, "aclcheck: all groups ok");
|
||||
#endif
|
||||
return ACLCHECK_OK;
|
||||
}
|
||||
/* Else, look to the world entry */
|
||||
break;
|
||||
case ACL_IDTYPE_GID:
|
||||
/* Look for this group ID */
|
||||
for (i = 1, aip = aidat + 1; /* skip world entry and
|
||||
* UIDs */
|
||||
i < num && aip->ai_idtype == ACL_IDTYPE_UID;
|
||||
|
|
@ -310,14 +310,16 @@ aclcheck(char *relname, Acl *acl, AclId id, AclIdType idtype, AclMode mode)
|
|||
if (aip->ai_id == id)
|
||||
{
|
||||
#ifdef ACLDEBUG_TRACE
|
||||
elog(DEBUG, "aclcheck: found %d/%d",
|
||||
elog(DEBUG, "aclcheck: found group %u/%d",
|
||||
aip->ai_id, aip->ai_mode);
|
||||
#endif
|
||||
return (aip->ai_mode & mode) ? ACLCHECK_OK : ACLCHECK_NO_PRIV;
|
||||
}
|
||||
}
|
||||
/* Else, look to the world entry */
|
||||
break;
|
||||
case ACL_IDTYPE_WORLD:
|
||||
/* Only check the world entry */
|
||||
break;
|
||||
default:
|
||||
elog(ERROR, "aclcheck: bogus ACL id type: %d", idtype);
|
||||
|
|
|
|||
Loading…
Reference in New Issue