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Represent grant options in the information schema.

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This commit is contained in:
Peter Eisentraut 2003-06-11 09:23:55 +00:00
parent 65fb311a97
commit 8a2922dcb2
4 changed files with 139 additions and 38 deletions
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49
src/backend/catalog/information_schema.sql
View File

@ -4,7 +4,7 @@
*
* Copyright 2002, PostgreSQL Global Development Group
*
* $Id: information_schema.sql,v 1.7 2003/06/05 16:08:47 petere Exp $
* $Id: information_schema.sql,v 1.8 2003/06/11 09:23:55 petere Exp $
*/
@ -604,7 +604,7 @@ GRANT SELECT ON referential_constraints TO PUBLIC;
*/
CREATE VIEW routine_privileges AS
SELECT CAST(u_owner.usename AS sql_identifier) AS grantor,
SELECT CAST(u_grantor.usename AS sql_identifier) AS grantor,
CAST(u_grantee.usename AS sql_identifier) AS grantee,
CAST(current_database() AS sql_identifier) AS specific_catalog,
CAST(n.nspname AS sql_identifier) AS specific_schema,
@ -613,17 +613,22 @@ CREATE VIEW routine_privileges AS
CAST(n.nspname AS sql_identifier) AS routine_schema,
CAST(p.proname AS sql_identifier) AS routine_name,
CAST('EXECUTE' AS character_data) AS privilege_type,
CAST('NO' AS character_data) AS is_grantable
CAST(
CASE WHEN aclcontains(p.proacl,
makeaclitem(u_grantee.usesysid, 0, u_grantor.usesysid, 'EXECUTE', true))
THEN 'YES' ELSE 'NO' END AS character_data) AS is_grantable
FROM pg_user u_owner,
pg_user u_grantee,
FROM pg_proc p,
pg_namespace n,
pg_proc p
pg_user u_grantor,
(SELECT usesysid, usename FROM pg_user UNION SELECT 0, 'PUBLIC') AS u_grantee
WHERE u_owner.usesysid = p.proowner
AND p.pronamespace = n.oid
AND has_function_privilege(u_grantee.usename, p.oid, 'EXECUTE')
AND (u_owner.usename = current_user OR u_grantee.usename = current_user);
WHERE p.pronamespace = n.oid
AND aclcontains(p.proacl,
makeaclitem(u_grantee.usesysid, 0, u_grantor.usesysid, 'EXECUTE', false))
AND (u_grantor.usename = current_user
OR u_grantee.usename = current_user
OR u_grantee.usename = 'PUBLIC');
GRANT SELECT ON routine_privileges TO PUBLIC;
@ -940,27 +945,31 @@ GRANT SELECT ON table_constraints TO PUBLIC;
*/
CREATE VIEW table_privileges AS
SELECT CAST(u_owner.usename AS sql_identifier) AS grantor,
SELECT CAST(u_grantor.usename AS sql_identifier) AS grantor,
CAST(u_grantee.usename AS sql_identifier) AS grantee,
CAST(current_database() AS sql_identifier) AS table_catalog,
CAST(nc.nspname AS sql_identifier) AS table_schema,
CAST(c.relname AS sql_identifier) AS table_name,
CAST(pr.type AS character_data) AS privilege_type,
CAST('NO' AS character_data) AS is_grantable,
CAST(
CASE WHEN aclcontains(c.relacl,
makeaclitem(u_grantee.usesysid, 0, u_grantor.usesysid, pr.type, true))
THEN 'YES' ELSE 'NO' END AS character_data) AS is_grantable,
CAST('NO' AS character_data) AS with_hierarchy
FROM pg_user u_owner,
pg_user u_grantee,
FROM pg_class c,
pg_namespace nc,
pg_class c,
pg_user u_grantor,
(SELECT usesysid, usename FROM pg_user UNION SELECT 0, 'PUBLIC') AS u_grantee,
(SELECT 'SELECT' UNION SELECT 'DELETE' UNION SELECT 'INSERT' UNION SELECT 'UPDATE'
UNION SELECT 'REFERENCES' UNION SELECT 'TRIGGER') AS pr (type)
WHERE u_owner.usesysid = c.relowner
AND c.relnamespace = nc.oid
AND has_table_privilege(u_grantee.usename, c.oid, pr.type)
AND (u_owner.usename = current_user OR u_grantee.usename = current_user);
WHERE c.relnamespace = nc.oid
AND aclcontains(c.relacl,
makeaclitem(u_grantee.usesysid, 0, u_grantor.usesysid, pr.type, false))
AND (u_grantor.usename = current_user
OR u_grantee.usename = current_user
OR u_grantee.usename = 'PUBLIC');
GRANT SELECT ON table_privileges TO PUBLIC;

118
src/backend/utils/adt/acl.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/acl.c,v 1.87 2003/06/02 19:00:29 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/acl.c,v 1.88 2003/06/11 09:23:55 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -32,12 +32,14 @@
static const char *getid(const char *s, char *n);
static void putid(char *p, const char *s);
static Acl *makeacl(int n);
static Acl *allocacl(int n);
static const char *aclparse(const char *s, AclItem *aip);
static bool aclitemeq(const AclItem *a1, const AclItem *a2);
static Acl *recursive_revoke(Acl *acl, AclId grantee,
AclMode revoke_privs, DropBehavior behavior);
static AclMode convert_priv_string(text *priv_type_text);
static Oid convert_table_name(text *tablename);
static AclMode convert_table_priv_string(text *priv_type_text);
static Oid convert_database_name(text *databasename);
@ -265,20 +267,20 @@ aclparse(const char *s, AclItem *aip)
}
/*
* makeacl
* allocacl
* Allocates storage for a new Acl with 'n' entries.
*
* RETURNS:
* the new Acl
*/
static Acl *
makeacl(int n)
allocacl(int n)
{
Acl *new_acl;
Size size;
if (n < 0)
elog(ERROR, "makeacl: invalid size: %d", n);
elog(ERROR, "allocacl: invalid size: %d", n);
size = ACL_N_SIZE(n);
new_acl = (Acl *) palloc0(size);
new_acl->size = size;
@ -471,7 +473,7 @@ acldefault(GrantObjectType objtype, AclId ownerid)
break;
}
acl = makeacl((world_default != ACL_NO_RIGHTS ? 1 : 0)
acl = allocacl((world_default != ACL_NO_RIGHTS ? 1 : 0)
+ (ownerid ? 1 : 0));
aip = ACL_DAT(acl);
@ -513,10 +515,10 @@ aclinsert3(const Acl *old_acl, const AclItem *mod_aip, unsigned modechg, DropBeh
/* These checks for null input are probably dead code, but... */
if (!old_acl || ACL_NUM(old_acl) < 1)
old_acl = makeacl(1);
old_acl = allocacl(1);
if (!mod_aip)
{
new_acl = makeacl(ACL_NUM(old_acl));
new_acl = allocacl(ACL_NUM(old_acl));
memcpy((char *) new_acl, (char *) old_acl, ACL_SIZE(old_acl));
return new_acl;
}
@ -536,7 +538,7 @@ aclinsert3(const Acl *old_acl, const AclItem *mod_aip, unsigned modechg, DropBeh
if (aclitemeq(mod_aip, old_aip + dst))
{
/* found a match, so modify existing item */
new_acl = makeacl(num);
new_acl = allocacl(num);
new_aip = ACL_DAT(new_acl);
memcpy(new_acl, old_acl, ACL_SIZE(old_acl));
break;
@ -546,7 +548,7 @@ aclinsert3(const Acl *old_acl, const AclItem *mod_aip, unsigned modechg, DropBeh
if (dst == num)
{
/* need to append a new item */
new_acl = makeacl(num + 1);
new_acl = allocacl(num + 1);
new_aip = ACL_DAT(new_acl);
memcpy(new_aip, old_aip, num * sizeof(AclItem));
@ -671,10 +673,10 @@ aclremove(PG_FUNCTION_ARGS)
/* These checks for null input should be dead code, but... */
if (!old_acl || ACL_NUM(old_acl) < 1)
old_acl = makeacl(1);
old_acl = allocacl(1);
if (!mod_aip)
{
new_acl = makeacl(ACL_NUM(old_acl));
new_acl = allocacl(ACL_NUM(old_acl));
memcpy((char *) new_acl, (char *) old_acl, ACL_SIZE(old_acl));
PG_RETURN_ACL_P(new_acl);
}
@ -689,13 +691,13 @@ aclremove(PG_FUNCTION_ARGS)
if (dst >= old_num)
{
/* Not found, so return copy of source ACL */
new_acl = makeacl(old_num);
new_acl = allocacl(old_num);
memcpy((char *) new_acl, (char *) old_acl, ACL_SIZE(old_acl));
}
else
{
new_num = old_num - 1;
new_acl = makeacl(new_num);
new_acl = allocacl(new_num);
new_aip = ACL_DAT(new_acl);
if (dst == 0)
{ /* start */
@ -734,13 +736,97 @@ aclcontains(PG_FUNCTION_ARGS)
aidat = ACL_DAT(acl);
for (i = 0; i < num; ++i)
{
if (aip->ai_grantee == aidat[i].ai_grantee &&
aip->ai_privs == aidat[i].ai_privs)
if (aip->ai_grantee == aidat[i].ai_grantee
&& ACLITEM_GET_IDTYPE(*aip) == ACLITEM_GET_IDTYPE(aidat[i])
&& aip->ai_grantor == aidat[i].ai_grantor
&& (ACLITEM_GET_PRIVS(*aip) & ACLITEM_GET_PRIVS(aidat[i])) == ACLITEM_GET_PRIVS(*aip)
&& (ACLITEM_GET_GOPTIONS(*aip) & ACLITEM_GET_GOPTIONS(aidat[i])) == ACLITEM_GET_GOPTIONS(*aip))
PG_RETURN_BOOL(true);
}
PG_RETURN_BOOL(false);
}
Datum
makeaclitem(PG_FUNCTION_ARGS)
{
int32 u_grantee = PG_GETARG_INT32(0);
int32 g_grantee = PG_GETARG_INT32(1);
int32 grantor = PG_GETARG_INT32(2);
text *privtext = PG_GETARG_TEXT_P(3);
bool goption = PG_GETARG_BOOL(4);
AclItem *aclitem;
AclMode priv;
priv = convert_priv_string(privtext);
aclitem = (AclItem *) palloc(sizeof(*aclitem));
if (u_grantee == 0 && g_grantee == 0)
{
aclitem->ai_grantee = 0;
ACLITEM_SET_IDTYPE(*aclitem, ACL_IDTYPE_WORLD);
}
else if (u_grantee != 0 && g_grantee != 0)
{
elog(ERROR, "cannot specify both user and group");
}
else if (u_grantee != 0)
{
aclitem->ai_grantee = u_grantee;
ACLITEM_SET_IDTYPE(*aclitem, ACL_IDTYPE_UID);
}
else if (g_grantee != 0)
{
aclitem->ai_grantee = g_grantee;
ACLITEM_SET_IDTYPE(*aclitem, ACL_IDTYPE_GID);
}
aclitem->ai_grantor = grantor;
ACLITEM_SET_PRIVS(*aclitem, priv);
if (goption)
ACLITEM_SET_GOPTIONS(*aclitem, priv);
else
ACLITEM_SET_GOPTIONS(*aclitem, ACL_NO_RIGHTS);
PG_RETURN_ACLITEM_P(aclitem);
}
static AclMode
convert_priv_string(text *priv_type_text)
{
char *priv_type;
priv_type = DatumGetCString(DirectFunctionCall1(textout,
PointerGetDatum(priv_type_text)));
if (strcasecmp(priv_type, "SELECT") == 0)
return ACL_SELECT;
if (strcasecmp(priv_type, "INSERT") == 0)
return ACL_INSERT;
if (strcasecmp(priv_type, "UPDATE") == 0)
return ACL_UPDATE;
if (strcasecmp(priv_type, "DELETE") == 0)
return ACL_DELETE;
if (strcasecmp(priv_type, "RULE") == 0)
return ACL_RULE;
if (strcasecmp(priv_type, "REFERENCES") == 0)
return ACL_REFERENCES;
if (strcasecmp(priv_type, "TRIGGER") == 0)
return ACL_TRIGGER;
if (strcasecmp(priv_type, "EXECUTE") == 0)
return ACL_EXECUTE;
if (strcasecmp(priv_type, "USAGE") == 0)
return ACL_USAGE;
if (strcasecmp(priv_type, "CREATE") == 0)
return ACL_CREATE;
if (strcasecmp(priv_type, "TEMP") == 0)
return ACL_CREATE_TEMP;
if (strcasecmp(priv_type, "TEMPORARY") == 0)
return ACL_CREATE_TEMP;
elog(ERROR, "invalid privilege type %s", priv_type);
return ACL_NO_RIGHTS; /* keep compiler quiet */
}
/*
* has_table_privilege variants

4
src/include/catalog/pg_proc.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: pg_proc.h,v 1.302 2003/05/26 00:11:27 tgl Exp $
* $Id: pg_proc.h,v 1.303 2003/06/11 09:23:55 petere Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@ -1318,6 +1318,8 @@ DATA(insert OID = 1036 ( aclremove PGNSP PGUID 12 f f t f s 2 1034 "1034 10
DESCR("remove ACL item");
DATA(insert OID = 1037 ( aclcontains PGNSP PGUID 12 f f t f s 2 16 "1034 1033" aclcontains - _null_ ));
DESCR("does ACL contain item?");
DATA(insert OID = 1365 ( makeaclitem PGNSP PGUID 12 f f t f s 5 1033 "23 23 23 25 16" makeaclitem - _null_ ));
DESCR("make ACL item");
DATA(insert OID = 1038 ( seteval PGNSP PGUID 12 f f t t v 1 23 "26" seteval - _null_ ));
DESCR("internal function supporting PostQuel-style sets");
DATA(insert OID = 1044 ( bpcharin PGNSP PGUID 12 f f t f i 3 1042 "2275 26 23" bpcharin - _null_ ));

6
src/include/utils/acl.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: acl.h,v 1.51 2003/01/23 23:39:07 petere Exp $
* $Id: acl.h,v 1.52 2003/06/11 09:23:55 petere Exp $
*
* NOTES
* For backward-compatibility purposes we have to allow there
@ -70,6 +70,9 @@ typedef struct AclItem
((item).ai_privs = (ACLITEM_GET_IDTYPE(item)<<30) | (ACLITEM_GET_GOPTIONS(item)<<15) | ((privs) & 0x7FFF))
#define ACLITEM_SET_GOPTIONS(item,goptions) \
((item).ai_privs = (ACLITEM_GET_IDTYPE(item)<<30) | (((goptions) & 0x7FFF) << 15) | ACLITEM_GET_PRIVS(item))
#define ACLITEM_SET_IDTYPE(item,idtype) \
((item).ai_privs = ((idtype)<<30) | (ACLITEM_GET_GOPTIONS(item)<<15) | ACLITEM_GET_PRIVS(item))
#define ACLITEM_SET_PRIVS_IDTYPE(item,privs,goption,idtype) \
((item).ai_privs = ((privs) & 0x7FFF) |(((goption) & 0x7FFF) << 15) | ((idtype) << 30))
@ -188,6 +191,7 @@ extern Datum aclitemout(PG_FUNCTION_ARGS);
extern Datum aclinsert(PG_FUNCTION_ARGS);
extern Datum aclremove(PG_FUNCTION_ARGS);
extern Datum aclcontains(PG_FUNCTION_ARGS);
extern Datum makeaclitem(PG_FUNCTION_ARGS);
/*
* prototypes for functions in aclchk.c