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Change tsearch2 to not use the unsafe practice of creating functions

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that return INTERNAL without also having INTERNAL arguments.  Since the
functions in question aren't meant to be called by hand anyway, I just
redeclared them to take 'internal' instead of 'text'.  Also add code
to ProcedureCreate() to enforce the restriction, as I should have done
to start with :-(
This commit is contained in:
Tom Lane 2005-05-03 16:51:45 +00:00
parent a935e36ae9
commit 308f01c304
4 changed files with 36 additions and 27 deletions
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2
contrib/tsearch2/gendict/sql.IN
View File

@ -1,7 +1,7 @@
SET search_path = public;
BEGIN;
HASINIT create function dinit_CFG_MODNAME(text)
HASINIT create function dinit_CFG_MODNAME(internal)
HASINIT returns internal
HASINIT as 'MODULE_PATHNAME'
HASINIT language 'C';

10
contrib/tsearch2/tsearch.sql.in
View File

@ -44,7 +44,7 @@ CREATE FUNCTION set_curdict(text)
with (isstrict);
--built-in dictionaries
CREATE FUNCTION dex_init(text)
CREATE FUNCTION dex_init(internal)
returns internal
as 'MODULE_PATHNAME'
language 'C';
@ -63,7 +63,7 @@ insert into pg_ts_dict select
'Simple example of dictionary.'
;
CREATE FUNCTION snb_en_init(text)
CREATE FUNCTION snb_en_init(internal)
returns internal
as 'MODULE_PATHNAME'
language 'C';
@ -82,7 +82,7 @@ insert into pg_ts_dict select
'English Stemmer. Snowball.'
;
CREATE FUNCTION snb_ru_init(text)
CREATE FUNCTION snb_ru_init(internal)
returns internal
as 'MODULE_PATHNAME'
language 'C';
@ -95,7 +95,7 @@ insert into pg_ts_dict select
'Russian Stemmer. Snowball.'
;
CREATE FUNCTION spell_init(text)
CREATE FUNCTION spell_init(internal)
returns internal
as 'MODULE_PATHNAME'
language 'C';
@ -114,7 +114,7 @@ insert into pg_ts_dict select
'ISpell interface. Must have .dict and .aff files'
;
CREATE FUNCTION syn_init(text)
CREATE FUNCTION syn_init(internal)
returns internal
as 'MODULE_PATHNAME'
language 'C';

10
contrib/tsearch2/untsearch.sql.in
View File

@ -34,14 +34,14 @@ DROP FUNCTION lexize(text, text);
DROP FUNCTION lexize(text);
DROP FUNCTION set_curdict(int);
DROP FUNCTION set_curdict(text);
DROP FUNCTION dex_init(text);
DROP FUNCTION dex_init(internal);
DROP FUNCTION dex_lexize(internal,internal,int4);
DROP FUNCTION snb_en_init(text);
DROP FUNCTION snb_en_init(internal);
DROP FUNCTION snb_lexize(internal,internal,int4);
DROP FUNCTION snb_ru_init(text);
DROP FUNCTION spell_init(text);
DROP FUNCTION snb_ru_init(internal);
DROP FUNCTION spell_init(internal);
DROP FUNCTION spell_lexize(internal,internal,int4);
DROP FUNCTION syn_init(text);
DROP FUNCTION syn_init(internal);
DROP FUNCTION syn_lexize(internal,internal,int4);
DROP FUNCTION set_curprs(int);
DROP FUNCTION set_curprs(text);

41
src/backend/catalog/pg_proc.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/catalog/pg_proc.c,v 1.109 2003/10/03 19:26:49 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/catalog/pg_proc.c,v 1.109.2.1 2005/05/03 16:51:45 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -65,6 +65,8 @@ ProcedureCreate(const char *procedureName,
const Oid *parameterTypes)
{
int i;
bool genericParam = false;
bool internalParam = false;
Relation rel;
HeapTuple tup;
HeapTuple oldtup;
@ -94,29 +96,36 @@ ProcedureCreate(const char *procedureName,
/*
* Do not allow return type ANYARRAY or ANYELEMENT unless at least one
* argument is also ANYARRAY or ANYELEMENT
* input argument is ANYARRAY or ANYELEMENT. Also, do not allow
* return type INTERNAL unless at least one input argument is INTERNAL.
*/
if (returnType == ANYARRAYOID || returnType == ANYELEMENTOID)
for (i = 0; i < parameterCount; i++)
{
bool genericParam = false;
for (i = 0; i < parameterCount; i++)
switch (parameterTypes[i])
{
if (parameterTypes[i] == ANYARRAYOID ||
parameterTypes[i] == ANYELEMENTOID)
{
case ANYARRAYOID:
case ANYELEMENTOID:
genericParam = true;
break;
}
case INTERNALOID:
internalParam = true;
break;
}
if (!genericParam)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("cannot determine result data type"),
errdetail("A function returning \"anyarray\" or \"anyelement\" must have at least one argument of either type.")));
}
if ((returnType == ANYARRAYOID || returnType == ANYELEMENTOID)
&& !genericParam)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("cannot determine result data type"),
errdetail("A function returning \"anyarray\" or \"anyelement\" must have at least one argument of either type.")));
if (returnType == INTERNALOID && !internalParam)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("unsafe use of INTERNAL pseudo-type"),
errdetail("A function returning \"internal\" must have at least one \"internal\" argument.")));
/* Make sure we have a zero-padded param type array */
MemSet(typev, 0, FUNC_MAX_ARGS * sizeof(Oid));
if (parameterCount > 0)