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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1999-2021 The OpenLDAP Foundation.
* Portions Copyright 1999 Dmitry Kovalev.
* Portions Copyright 2004 Pierangelo Masarati.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENTS:
* This work was initially developed by Dmitry Kovalev for inclusion
* by OpenLDAP Software. Additional significant contributors include
* Pierangelo Masarati.
*/
#include "portable.h"
#include <stdio.h>
#include <sys/types.h>
#include "ac/string.h"
#include "slap.h"
#include "proto-sql.h"
static backsql_api *backsqlapi;
int
backsql_api_config( backsql_info *bi, const char *name, int argc, char *argv[] )
{
backsql_api *ba;
assert( bi != NULL );
assert( name != NULL );
for ( ba = backsqlapi; ba; ba = ba->ba_next ) {
if ( strcasecmp( name, ba->ba_name ) == 0 ) {
backsql_api *ba2;
ba2 = ch_malloc( sizeof( backsql_api ) );
*ba2 = *ba;
if ( ba2->ba_config ) {
if ( ( *ba2->ba_config )( ba2, argc, argv ) ) {
ch_free( ba2 );
return 1;
}
ba2->ba_argc = argc;
if ( argc ) {
int i;
ba2->ba_argv = ch_malloc( argc * sizeof(char *));
for ( i=0; i<argc; i++ )
ba2->ba_argv[i] = ch_strdup( argv[i] );
}
}
ba2->ba_next = bi->sql_api;
bi->sql_api = ba2;
return 0;
}
}
return 1;
}
int
backsql_api_destroy( backsql_info *bi )
{
backsql_api *ba;
assert( bi != NULL );
ba = bi->sql_api;
if ( ba == NULL ) {
return 0;
}
for ( ; ba; ba = ba->ba_next ) {
if ( ba->ba_destroy ) {
(void)( *ba->ba_destroy )( ba );
}
}
return 0;
}
int
backsql_api_register( backsql_api *ba )
{
backsql_api *ba2;
assert( ba != NULL );
assert( ba->ba_private == NULL );
if ( ba->ba_name == NULL ) {
fprintf( stderr, "API module has no name\n" );
exit(EXIT_FAILURE);
}
for ( ba2 = backsqlapi; ba2; ba2 = ba2->ba_next ) {
if ( strcasecmp( ba->ba_name, ba2->ba_name ) == 0 ) {
fprintf( stderr, "API module \"%s\" already defined\n", ba->ba_name );
exit( EXIT_FAILURE );
}
}
ba->ba_next = backsqlapi;
backsqlapi = ba;
return 0;
}
int
backsql_api_dn2odbc( Operation *op, SlapReply *rs, struct berval *dn )
{
backsql_info *bi = (backsql_info *)op->o_bd->be_private;
backsql_api *ba;
int rc;
struct berval bv;
ba = bi->sql_api;
if ( ba == NULL ) {
return 0;
}
ber_dupbv( &bv, dn );
for ( ; ba; ba = ba->ba_next ) {
if ( ba->ba_dn2odbc ) {
/*
* The dn2odbc() helper is supposed to rewrite
* the contents of bv, freeing the original value
* with ch_free() if required and replacing it
* with a newly allocated one using ch_malloc()
* or companion functions.
*
* NOTE: it is supposed to __always__ free
* the value of bv in case of error, and reset
* it with BER_BVZERO() .
*/
rc = ( *ba->ba_dn2odbc )( op, rs, &bv );
if ( rc ) {
/* in case of error, dn2odbc() must cleanup */
assert( BER_BVISNULL( &bv ) );
return rc;
}
}
}
assert( !BER_BVISNULL( &bv ) );
*dn = bv;
return 0;
}
int
backsql_api_odbc2dn( Operation *op, SlapReply *rs, struct berval *dn )
{
backsql_info *bi = (backsql_info *)op->o_bd->be_private;
backsql_api *ba;
int rc;
struct berval bv;
ba = bi->sql_api;
if ( ba == NULL ) {
return 0;
}
ber_dupbv( &bv, dn );
for ( ; ba; ba = ba->ba_next ) {
if ( ba->ba_dn2odbc ) {
rc = ( *ba->ba_odbc2dn )( op, rs, &bv );
/*
* The odbc2dn() helper is supposed to rewrite
* the contents of bv, freeing the original value
* with ch_free() if required and replacing it
* with a newly allocated one using ch_malloc()
* or companion functions.
*
* NOTE: it is supposed to __always__ free
* the value of bv in case of error, and reset
* it with BER_BVZERO() .
*/
if ( rc ) {
/* in case of error, odbc2dn() must cleanup */
assert( BER_BVISNULL( &bv ) );
return rc;
}
}
}
assert( !BER_BVISNULL( &bv ) );
*dn = bv;
return 0;
}
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