8000 Change CREATE TYPE to require datatype output and send functions to have · postgrespro/postgres_cluster@6c412f0 · GitHub
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Change CREATE TYPE to require datatype output and send functions to have
only one argument. (Per recent discussion, the option to accept multiple arguments is pretty useless for user-defined types, and would be a likely source of security holes if it was used.) Simplify call sites of output/send functions to not bother passing more than one argument.
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18 files changed

+102
-216
lines changed

18 files changed

+102
-216
lines changed

‎doc/src/sgml/ref/create_type.sgml‎

Lines changed: 7 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
<!--
2-
$PostgreSQL: pgsql/doc/src/sgml/ref/create_type.sgml,v 1.54 2005/01/04 00:39:53 tgl Exp $
2+
$PostgreSQL: pgsql/doc/src/sgml/ref/create_type.sgml,v 1.55 2005/05/01 18:56:17 tgl Exp $
33
PostgreSQL documentation
44
-->
55

@@ -107,13 +107,10 @@ CREATE TYPE <replaceable class="parameter">name</replaceable> (
107107
(or the type's own OID for a composite type),
108108
and the third is the <literal>typmod</> of the destination column, if known
109109
(-1 will be passed if not).
110-
The input function should return a value of the data type itself.
111-
The output function may be
112-
declared as taking one argument of the new data type, or as taking
113-
two arguments of which the second is type <type>oid</type>.
114-
The second argument is again the array element type OID for array types
115-
or the type OID for composite types.
116-
The output function should return type <type>cstring</type>.
110+
The input function must return a value of the data type itself.
111+
The output function must be
112+
declared as taking one argument of the new data type.
113+
The output function must return type <type>cstring</type>.
117114
</para>
118115

119116
<para>
@@ -137,11 +134,8 @@ CREATE TYPE <replaceable class="parameter">name</replaceable> (
137134
<replaceable class="parameter">send_function</replaceable> converts
138135
from the internal representation to the external binary representation.
139136
If this function is not supplied, the type cannot participate in binary
140-
output. The send function may be
141-
declared as taking one argument of the new data type, or as taking
142-
two arguments of which the second is type <type>oid</type>.
143-
The second argument is again the array element type OID for array types
144-
or the type OID for composite types.
137+
output. The send function must be
138+
declared as taking one argument of the new data type.
145139
The send function must return type <type>bytea</type>.
146140
</para>
147141

‎src/backend/access/common/printtup.c‎

Lines changed: 13 additions & 25 deletions
Original file line numberDiff line numberDiff line change
@@ -9,7 +9,7 @@
99
* Portions Copyright (c) 1994, Regents of the University of California
1010
*
1111
* IDENTIFICATION
12-
* $PostgreSQL: pgsql/src/backend/access/common/printtup.c,v 1.89 2005/04/23 17:45:35 tgl Exp $
12+
* $PostgreSQL: pgsql/src/backend/access/common/printtup.c,v 1.90 2005/05/01 18:56:17 tgl Exp $
1313
*
1414
*-------------------------------------------------------------------------
1515
*/
@@ -48,7 +48,6 @@ typedef struct
4848
{ /* Per-attribute information */
4949
Oid typoutput; /* Oid for the type's text output fn */
5050
Oid typsend; /* Oid for the type's binary output fn */
51-
Oid typioparam; /* param to pass to the output fn */
5251
bool typisvarlena; /* is it varlena (ie possibly toastable)? */
5352
int16 format; /* format code for this column */
5453
FmgrInfo finfo; /* Precomputed call info for output fn */
@@ -263,15 +262,13 @@ printtup_prepare_info(DR_printtup *myState, TupleDesc typeinfo, int numAttrs)
263262
{
264263
getTypeOutputInfo(typeinfo->attrs[i]->atttypid,
265264
&thisState->typoutput,
266-
&thisState->typioparam,
267265
&thisState->typisvarlena);
268266
fmgr_info(thisStat A3D3 e->typoutput, &thisState->finfo);
269267
}
270268
else if (format == 1)
271269
{
272270
getTypeBinaryOutputInfo(typeinfo->attrs[i]->atttypid,
273271
&thisState->typsend,
274-
&thisState->typioparam,
275272
&thisState->typisvarlena);
276273
fmgr_info(thisState->typsend, &thisState->finfo);
277274
}
@@ -338,10 +335,8 @@ printtup(TupleTableSlot *slot, DestReceiver *self)
338335
/* Text output */
339336
char *outputstr;
340337

341-
outputstr = DatumGetCString(FunctionCall3(&thisState->finfo,
342-
attr,
343-
ObjectIdGetDatum(thisState->typioparam),
344-
Int32GetDatum(typeinfo->attrs[i]->atttypmod)));
338+
outputstr = DatumGetCString(FunctionCall1(&thisState->finfo,
339+
attr));
345340
pq_sendcountedtext(&buf, outputstr, strlen(outputstr), false);
346341
pfree(outputstr);
347342
}
@@ -350,9 +345,8 @@ printtup(TupleTableSlot *slot, DestReceiver *self)
350345
/* Binary output */
351346
bytea *outputbytes;
352347

353-
outputbytes = DatumGetByteaP(FunctionCall2(&thisState->finfo,
354-
attr,
355-
ObjectIdGetDatum(thisState->typioparam)));
348+
outputbytes = DatumGetByteaP(FunctionCall1(&thisState->finfo,
349+
attr));
356350
/* We assume the result will not have been toasted */
357351
pq_sendint(&buf, VARSIZE(outputbytes) - VARHDRSZ, 4);
358352
pq_sendbytes(&buf, VARDATA(outputbytes),
@@ -439,10 +433,8 @@ printtup_20(TupleTableSlot *slot, DestReceiver *self)
439433
else
440434
attr = origattr;
441435

442-
outputstr = DatumGetCString(FunctionCall3(&thisState->finfo,
443-
attr,
444-
ObjectIdGetDatum(thisState->typioparam),
445-
Int32GetDatum(typeinfo->attrs[i]->atttypmod)));
436+
outputstr = DatumGetCString(FunctionCall1(&thisState->finfo,
437+
attr));
446438
pq_sendcountedtext(&buf, outputstr, strlen(outputstr), true);
447439
pfree(outputstr);
448440

@@ -534,8 +526,7 @@ debugtup(TupleTableSlot *slot, DestReceiver *self)
534526
attr;
535527
char *value;
536528
bool isnull;
537-
Oid typoutput,
538-
typioparam;
529+
Oid typoutput;
539530
bool typisvarlena;
540531

541532
for (i = 0; i < natts; ++i)
@@ -544,7 +535,7 @@ debugtup(TupleTableSlot *slot, DestReceiver *self)
544535
if (isnull)
545536
continue;
546537
getTypeOutputInfo(typeinfo->attrs[i]->atttypid,
547-
&typoutput, &typioparam, &typisvarlena);
538+
&typoutput, &typisvarlena);
548539

549540
/*
550541
* If we have a toasted datum, forcibly detoast it here to avoid
@@ -555,10 +546,8 @@ debugtup(TupleTableSlot *slot, DestReceiver *self)
555546
else
556547
attr = origattr;
557548

558-
value = DatumGetCString(OidFunctionCall3(typoutput,
559-
attr,
560-
ObjectIdGetDatum(typioparam),
561-
Int32GetDatum(typeinfo->attrs[i]->atttypmod)));
549+
value = DatumGetCString(OidFunctionCall1(typoutput,
550+
attr));
562551

563552
printatt((unsigned) i + 1, typeinfo->attrs[i], value);
564553

@@ -647,9 +636,8 @@ printtup_internal_20(TupleTableSlot *slot, DestReceiver *self)
647636
else
648637
attr = origattr;
649638

650-
outputbytes = DatumGetByteaP(FunctionCall2(&thisState->finfo,
651-
attr,
652-
ObjectIdGetDatum(thisState->typioparam)));
639+
outputbytes = DatumGetByteaP(FunctionCall1(&thisState->finfo,
640+
attr));
653641
/* We assume the result will not have been toasted */
654642
pq_sendint(&buf, VARSIZE(outputbytes) - VARHDRSZ, 4);
655643
pq_sendbytes(&buf, VARDATA(outputbytes),

‎src/backend/bootstrap/bootstrap.c‎

Lines changed: 3 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.202 2005/04/14 20:03:23 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.203 2005/05/01 18:56:17 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -850,10 +850,8 @@ InsertOneValue(char *value, int i)
850850
CStringGetDatum(value),
851851
ObjectIdGetDatum(typioparam),
852852
Int32GetDatum(-1));
853-
prt = DatumGetCString(OidFunctionCall3(typoutput,
854-
values[i],
855-
ObjectIdGetDatum(typioparam),
856-
Int32GetDatum(-1)));
853+
prt = DatumGetCString(OidFunctionCall1(typoutput,
854+
values[i]));
857855
elog(DEBUG4, "inserted -> %s", prt);
858856
pfree(prt);
859857
}

‎src/backend/commands/copy.c‎

Lines changed: 10 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/commands/copy.c,v 1.240 2005/04/14 20:03:23 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/commands/copy.c,v 1.241 2005/05/01 18:56:18 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -1178,8 +1178,6 @@ CopyTo(Relation rel, List *attnumlist, bool binary, bool oids,
11781178
Form_pg_attribute *attr;
11791179
FmgrInfo *out_functions;
11801180
bool *force_quote;
1181-
Oid *typioparams;
1182-
bool *isvarlena;
11831181
char *string;
11841182
ListCell *cur;
11851183
MemoryContext oldcontext;
@@ -1194,22 +1192,21 @@ CopyTo(Relation rel, List *attnumlist, bool binary, bool oids,
11941192
* Get info about the columns we need to process.
11951193
*/
11961194
out_functions = (FmgrInfo *) palloc(num_phys_attrs * sizeof(FmgrInfo));
1197-
typioparams = (Oid *) palloc(num_phys_attrs * sizeof(Oid));
1198-
isvarlena = (bool *) palloc(num_phys_attrs * sizeof(bool));
11991195
force_quote = (bool *) palloc(num_phys_attrs * sizeof(bool));
12001196
foreach(cur, attnumlist)
12011197
{
12021198
int attnum = lfirst_int(cur);
12031199
Oid out_func_oid;
1200+
bool isvarlena;
12041201

12051202
if (binary)
12061203
getTypeBinaryOutputInfo(attr[attnum - 1]->atttypid,
1207-
&out_func_oid, &typioparams[attnum - 1],
1208-
&isvarlena[attnum - 1]);
1204+
&out_func_oid,
1205+
&isvarlena);
12091206
else
12101207
getTypeOutputInfo(attr[attnum - 1]->atttypid,
1211-
&out_func_oid, &typioparams[attnum - 1],
1212-
&isvarlena[attnum - 1]);
1208+
&out_func_oid,
1209+
&isvarlena);
12131210
fmgr_info(out_func_oid, &out_functions[attnum - 1]);
12141211

12151212
if (list_member_int(force_quote_atts, attnum))
@@ -1321,10 +1318,8 @@ CopyTo(Relation rel, List *attnumlist, bool binary, bool oids,
13211318
{
13221319
if (!binary)
13231320
{
1324-
string = DatumGetCString(FunctionCall3(&out_functions[attnum - 1],
1325-
value,
1326-
ObjectIdGetDatum(typioparams[attnum - 1]),
1327-
Int32GetDatum(attr[attnum - 1]->atttypmod)));
1321+
string = DatumGetCString(FunctionCall1(&out_functions[attnum - 1],
1322+
value));
13281323
if (csv_mode)
13291324
{
13301325
CopyAttributeOutCSV(string, delim, quote, escape,
@@ -1339,9 +1334,8 @@ CopyTo(Relation rel, List *attnumlist, bool binary, bool oids,
13391334
{
13401335
bytea *outputbytes;
13411336

1342-
outputbytes = DatumGetByteaP(FunctionCall2(&out_functions[attnum - 1],
1343-
value,
1344-
ObjectIdGetDatum(typioparams[attnum - 1])));
1337+
outputbytes = DatumGetByteaP(FunctionCall1(&out_functions[attnum - 1],
1338+
value));
13451339
/* We assume the result will not have been toasted */
13461340
CopySendInt32(VARSIZE(outputbytes) - VARHDRSZ);
13471341
CopySendData(VARDATA(outputbytes),
@@ -1366,8 +1360,6 @@ CopyTo(Relation rel, List *attnumlist, bool binary, bool oids,
13661360
MemoryContextDelete(mycontext);
13671361

13681362
pfree(out_functions);
1369-
pfree(typioparams);
1370-
pfree(isvarlena);
13711363
pfree(force_quote);
13721364
}
13731365

‎src/backend/commands/typecmds.c‎

Lines changed: 5 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.70 2005/04/14 20:03:24 tgl Exp $ CDBB
11+
* $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.71 2005/05/01 18:56:18 tgl Exp $
1212
*
1313
* DESCRIPTION
1414
* The "DefineFoo" routines take the parse tree and pick out the
@@ -920,12 +920,11 @@ findTypeInputFunction(List *procname, Oid typeOid)
920920
static Oid
921921
findTypeOutputFunction(List *procname, Oid typeOid)
922922
{
923-
Oid argList[2];
923+
Oid argList[1];
924924
Oid procOid;
925925

926926
/*
927-
* Output functions can take a single argument of the type, or two
928-
* arguments (data value, element OID).
927+
* Output functions can take a single argument of the type.
929928
*
930929
* For backwards compatibility we allow OPAQUE in place of the actual
931930
* type name; if we see this, we issue a warning and fix up the
@@ -937,24 +936,11 @@ findTypeOutputFunction(List *procname, Oid typeOid)
937936
if (OidIsValid(procOid))
938937
return procOid;
939938

940-
argList[1] = OIDOID;
941-
942-
procOid = LookupFuncName(procname, 2, argList, true);
943-
if (OidIsValid(procOid))
944-
return procOid;
945-
946939
/* No luck, try it with OPAQUE */
947940
argList[0] = OPAQUEOID;
948941

949942
procOid = LookupFuncName(procname, 1, argList, true);
950943

951-
if (!OidIsValid(procOid))
952-
{
953-
argList[1] = OIDOID;
954-
955-
procOid = LookupFuncName(procname, 2, argList, true);
956-
}
957-
958944
if (OidIsValid(procOid))
959945
{
960946
/* Found, but must complain and fix the pg_proc entry */
@@ -1016,25 +1002,18 @@ findTypeReceiveFunction(List *procname, Oid typeOid)
10161002
static Oid
10171003
findTypeSendFunction(List *procname, Oid typeOid)
10181004
{
1019-
Oid argList[2];
1005+
Oid argList[1];
10201006
Oid procOid;
10211007

10221008
/*
1023-
* Send functions can take a single argument of the type, or two
1024-
* arguments (data value, element OID).
1009+
* Send functions can take a single argument of the type.
10251010
*/
10261011
argList[0] = typeOid;
10271012

10281013
procOid = LookupFuncName(procname, 1, argList, true);
10291014
if (OidIsValid(procOid))
10301015
return procOid;
10311016

1032-
argList[1] = OIDOID;
1033-
1034-
procOid = LookupFuncName(procname, 2, argList, true);
1035-
if (OidIsValid(procOid))
1036-
return procOid;
1037-
10381017
ereport(ERROR,
10391018
(errcode(ERRCODE_UNDEFINED_FUNCTION),
10401019
errmsg("function %s does not exist",

‎src/backend/executor/spi.c‎

Lines changed: 5 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/executor/spi.c,v 1.137 2005/03/29 02:53:53 neilc Exp $
11+
* $PostgreSQL: pgsql/src/backend/executor/spi.c,v 1.138 2005/05/01 18:56:18 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -632,9 +632,7 @@ SPI_getvalue(HeapTuple tuple, TupleDesc tupdesc, int fnumber)
632632
result;
633633
bool isnull;
634634
Oid typoid,
635-
foutoid,
636-
typioparam;
637-
int32 typmod;
635+
foutoid;
638636
bool typisvarlena;
639637

640638
SPI_result = 0;
@@ -651,17 +649,11 @@ SPI_getvalue(HeapTuple tuple, TupleDesc tupdesc, int fnumber)
651649
return NULL;
652650

653651
if (fnumber > 0)
654-
{
655652
typoid = tupdesc->attrs[fnumber - 1]->atttypid;
656-
typmod = tupdesc->attrs[fnumber - 1]->atttypmod;
657-
}
658653
else
659-
{
660654
typoid = (SystemAttributeDefinition(fnumber, true))->atttypid;
661-
typmod = -1;
662-
}
663655

664-
getTypeOutputInfo(typoid, &foutoid, &typioparam, &typisvarlena);
656+
getTypeOutputInfo(typoid, &foutoid, &typisvarlena);
665657

666658
/*
667659
* If we have a toasted datum, forcibly detoast it here to avoid
@@ -672,10 +664,8 @@ SPI_getvalue(HeapTuple tuple, TupleDesc tupdesc, int fnumber)
672664
else
673665
val = origval;
674666

675-
result = OidFunctionCall3(foutoid,
676-
val,
677-
ObjectIdGetDatum(typioparam),
678-
Int32GetDatum(typmod));
667+
result = OidFunctionCall1(foutoid,
668+
val);
679669

680670
/* Clean up detoasted copy, if any */
681671
if (val != origval)

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