openldap/servers/slapd/back-bdb2/dn2id.c

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/* dn2id.c - routines to deal with the dn2id index */
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "slap.h"
#include "back-bdb2.h"
#include "proto-back-bdb2.h"
int
bdb2i_dn2id_add(
BackendDB *be,
char *dn,
ID id
)
{
int rc, flags;
struct dbcache *db;
Datum key, data;
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
ldbm_datum_init( key );
ldbm_datum_init( data );
Debug( LDAP_DEBUG_TRACE, "=> bdb2i_dn2id_add( \"%s\", %ld )\n", dn, id, 0 );
if ( (db = bdb2i_cache_open( be, "dn2id", BDB2_SUFFIX, LDBM_WRCREAT ))
== NULL ) {
Debug( LDAP_DEBUG_ANY, "Could not open/create dn2id%s\n",
BDB2_SUFFIX, 0, 0 );
return( -1 );
}
dn = ch_strdup( dn );
(void) dn_normalize_case( dn );
key.dptr = dn;
key.dsize = strlen( dn ) + 1;
data.dptr = (char *) &id;
data.dsize = sizeof(ID);
flags = LDBM_INSERT;
if ( li->li_dbcachewsync ) flags |= LDBM_SYNC;
rc = bdb2i_cache_store( db, key, data, flags );
free( dn );
bdb2i_cache_close( be, db );
Debug( LDAP_DEBUG_TRACE, "<= bdb2i_dn2id_add %d\n", rc, 0, 0 );
return( rc );
}
ID
bdb2i_dn2id(
BackendDB *be,
char *dn
)
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
struct dbcache *db;
ID id;
Datum key, data;
ldbm_datum_init( key );
ldbm_datum_init( data );
dn = ch_strdup( dn );
Debug( LDAP_DEBUG_TRACE, "=> bdb2i_dn2id( \"%s\" )\n", dn, 0, 0 );
(void) dn_normalize_case( dn );
/* first check the cache */
if ( (id = bdb2i_cache_find_entry_dn2id( be, &li->li_cache, dn )) != NOID ) {
free( dn );
Debug( LDAP_DEBUG_TRACE, "<= bdb2i_dn2id %ld (in cache)\n", id,
0, 0 );
return( id );
}
if ( (db = bdb2i_cache_open( be, "dn2id", BDB2_SUFFIX, LDBM_WRCREAT ))
== NULL ) {
free( dn );
Debug( LDAP_DEBUG_ANY, "<= bdb2i_dn2id could not open dn2id%s\n",
BDB2_SUFFIX, 0, 0 );
return( NOID );
}
key.dptr = dn;
key.dsize = strlen( dn ) + 1;
data = bdb2i_cache_fetch( db, key );
bdb2i_cache_close( be, db );
free( dn );
if ( data.dptr == NULL ) {
Debug( LDAP_DEBUG_TRACE, "<= bdb2i_dn2id NOID\n", 0, 0, 0 );
return( NOID );
}
(void) memcpy( (char *) &id, data.dptr, sizeof(ID) );
ldbm_datum_free( db->dbc_db, data );
Debug( LDAP_DEBUG_TRACE, "<= bdb2i_dn2id %ld\n", id, 0, 0 );
return( id );
}
int
bdb2i_dn2id_delete(
BackendDB *be,
char *dn
)
{
struct dbcache *db;
Datum key;
int rc;
ldbm_datum_init( key );
Debug( LDAP_DEBUG_TRACE, "=> bdb2i_dn2id_delete( \"%s\" )\n", dn, 0, 0 );
if ( (db = bdb2i_cache_open( be, "dn2id", BDB2_SUFFIX, LDBM_WRCREAT ))
== NULL ) {
Debug( LDAP_DEBUG_ANY,
"<= bdb2i_dn2id_delete could not open dn2id%s\n", BDB2_SUFFIX,
0, 0 );
return( -1 );
}
dn = ch_strdup( dn );
(void) dn_normalize_case( dn );
key.dptr = dn;
key.dsize = strlen( dn ) + 1;
rc = bdb2i_cache_delete( db, key );
free( dn );
bdb2i_cache_close( be, db );
Debug( LDAP_DEBUG_TRACE, "<= bdb2i_dn2id_delete %d\n", rc, 0, 0 );
return( rc );
}
/*
* dn2entry - look up dn in the cache/indexes and return the corresponding
* entry.
*/
Entry *
bdb2i_dn2entry_rw(
BackendDB *be,
char *dn,
Entry **matched,
int rw
)
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
ID id;
Entry *e = NULL;
char *pdn;
Debug(LDAP_DEBUG_TRACE, "dn2entry_%s: dn: \"%s\"\n",
rw ? "w" : "r", dn, 0);
if( matched != NULL ) {
/* caller cares about match */
*matched = NULL;
}
if ( (id = bdb2i_dn2id( be, dn )) != NOID &&
(e = bdb2i_id2entry_rw( be, id, rw )) != NULL )
{
return( e );
}
if ( id != NOID ) {
Debug(LDAP_DEBUG_ANY,
"dn2entry_%s: no entry for valid id (%ld), dn \"%s\"\n",
rw ? "w" : "r", id, dn);
/* must have been deleted from underneath us */
/* treat as if NOID was found */
}
/* caller doesn't care about match */
if( matched == NULL ) return NULL;
/* entry does not exist - see how much of the dn does exist */
/* dn_parent checks returns NULL if dn is suffix */
if ( (pdn = dn_parent( be, dn )) != NULL ) {
/* get entry with reader lock */
if ( (e = bdb2i_dn2entry_r( be, pdn, matched )) != NULL ) {
*matched = e;
}
free( pdn );
}
return( NULL );
}