113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
|
/*-------------------------------------------------------------------------
|
||
|
*
|
||
|
* conversionmacmds.c
|
||
|
* conversion creation command support code
|
||
|
*
|
||
|
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
|
||
|
* Portions Copyright (c) 1994, Regents of the University of California
|
||
|
*
|
||
|
*
|
||
|
* IDENTIFICATION
|
||
|
* $Header: /cvsroot/pgsql/src/backend/commands/conversioncmds.c,v 1.1 2002/07/11 07:39:27 ishii Exp $
|
||
|
*
|
||
|
*-------------------------------------------------------------------------
|
||
|
*/
|
||
|
#include "postgres.h"
|
||
|
|
||
|
#include "catalog/pg_conversion.h"
|
||
|
#include "catalog/catalog.h"
|
||
|
#include "catalog/namespace.h"
|
||
|
#include "catalog/pg_type.h"
|
||
|
#include "mb/pg_wchar.h"
|
||
|
#include "commands/conversioncmds.h"
|
||
|
#include "miscadmin.h"
|
||
|
#include "parser/parse_func.h"
|
||
|
#include "utils/acl.h"
|
||
|
#include "utils/lsyscache.h"
|
||
|
|
||
|
|
||
|
/*
|
||
|
* CREATE CONVERSION
|
||
|
*/
|
||
|
void
|
||
|
CreateConversionCommand(CreateConversionStmt *stmt)
|
||
|
{
|
||
|
Oid namespaceId;
|
||
|
char *conversion_name;
|
||
|
AclResult aclresult;
|
||
|
int for_encoding;
|
||
|
int to_encoding;
|
||
|
Oid funcoid;
|
||
|
Oid funcnamespace;
|
||
|
char *dummy;
|
||
|
|
||
|
const char *for_encoding_name = stmt->for_encoding_name;
|
||
|
const char *to_encoding_name = stmt->to_encoding_name;
|
||
|
List *func_name = stmt->func_name;
|
||
|
|
||
|
static Oid funcargs[] = {INT4OID, INT4OID, 0, 0, INT4OID};
|
||
|
|
||
|
/* Convert list of names to a name and namespace */
|
||
|
namespaceId = QualifiedNameGetCreationNamespace(stmt->conversion_name, &conversion_name);
|
||
|
|
||
|
/* Check we have creation rights in target namespace */
|
||
|
aclresult = pg_namespace_aclcheck(namespaceId, GetUserId(), ACL_CREATE);
|
||
|
if (aclresult != ACLCHECK_OK)
|
||
|
aclcheck_error(aclresult, get_namespace_name(namespaceId));
|
||
|
|
||
|
/* Check the encoding names */
|
||
|
for_encoding = pg_char_to_encoding(for_encoding_name);
|
||
|
if (for_encoding < 0)
|
||
|
elog(ERROR, "Invalid for encoding name: %s", for_encoding_name);
|
||
|
|
||
|
to_encoding = pg_char_to_encoding(to_encoding_name);
|
||
|
if (to_encoding < 0)
|
||
|
elog(ERROR, "Invalid to encoding name: %s", to_encoding_name);
|
||
|
|
||
|
/* Check the existence of the conversion function.
|
||
|
* Function name could be a qualified name.
|
||
|
*/
|
||
|
funcoid = LookupFuncName(func_name, sizeof(funcargs)/sizeof(Oid), funcargs);
|
||
|
if (!OidIsValid(funcoid))
|
||
|
elog(ERROR, "Function %s does not exist", NameListToString(func_name));
|
||
|
|
||
|
/* Check the rights for this function and name space */
|
||
|
funcnamespace = QualifiedNameGetCreationNamespace(func_name, &dummy);
|
||
|
aclresult = pg_namespace_aclcheck(namespaceId, GetUserId(), ACL_USAGE);
|
||
|
if (aclresult != ACLCHECK_OK)
|
||
|
aclcheck_error(aclresult, get_namespace_name(funcnamespace));
|
||
|
|
||
|
aclresult = pg_proc_aclcheck(funcoid, GetUserId(), ACL_EXECUTE);
|
||
|
if (aclresult != ACLCHECK_OK)
|
||
|
aclcheck_error(aclresult, get_namespace_name(funcnamespace));
|
||
|
|
||
|
/* All seem ok, go ahead (possible failure would be a duplicate conversion name) */
|
||
|
ConversionCreate(conversion_name, namespaceId, GetUserId(),
|
||
|
for_encoding, to_encoding, funcoid, stmt->def);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* DROP CONVERSION
|
||
|
*/
|
||
|
void
|
||
|
DropConversionCommand(List *name)
|
||
|
{
|
||
|
Oid namespaceId;
|
||
|
char *conversion_name;
|
||
|
AclResult aclresult;
|
||
|
|
||
|
/* Convert list of names to a name and namespace */
|
||
|
namespaceId = QualifiedNameGetCreationNamespace(name, &conversion_name);
|
||
|
|
||
|
/* Check we have creation rights in target namespace */
|
||
|
aclresult = pg_namespace_aclcheck(namespaceId, GetUserId(), ACL_CREATE);
|
||
|
if (aclresult != ACLCHECK_OK)
|
||
|
aclcheck_error(aclresult, get_namespace_name(namespaceId));
|
||
|
|
||
|
/* Go ahead (possible failure would be:
|
||
|
* none existing conversion
|
||
|
* not ower of this conversion
|
||
|
*/
|
||
|
ConversionDrop(conversion_name, namespaceId, GetUserId());
|
||
|
}
|