openldap/servers/slapd/back-bdb/attribute.c

246 lines
5.5 KiB
C

/* attribute.c - bdb backend acl attribute routine */
/* $OpenLDAP$ */
/*
* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/socket.h>
#include <ac/string.h>
#include "slap.h"
#include "back-bdb.h"
#include "proto-bdb.h"
/* return LDAP_SUCCESS IFF we can retrieve the attributes
* of entry with e_ndn
*/
int
bdb_attribute(
Backend *be,
Connection *conn,
Operation *op,
Entry *target,
struct berval *entry_ndn,
AttributeDescription *entry_at,
BerVarray *vals )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
struct bdb_op_info *boi = NULL;
DB_TXN *txn = NULL;
Entry *e;
int i, j = 0, rc;
Attribute *attr;
BerVarray v;
const char *entry_at_name = entry_at->ad_cname.bv_val;
AccessControlState acl_state = ACL_STATE_INIT;
u_int32_t locker;
DB_LOCK lock;
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ARGS,
"bdb_attribute: gr dn: \"%s\"\n", entry_ndn->bv_val, 0, 0 );
LDAP_LOG( BACK_BDB, ARGS,
"bdb_attribute: at: \"%s\"\n", entry_at_name, 0, 0);
LDAP_LOG( BACK_BDB, ARGS, "bdb_attribute: tr dn: \"%s\"\n",
target ? target->e_ndn : "", 0, 0 );
#else
Debug( LDAP_DEBUG_ARGS,
"=> bdb_attribute: gr dn: \"%s\"\n",
entry_ndn->bv_val, 0, 0 );
Debug( LDAP_DEBUG_ARGS,
"=> bdb_attribute: at: \"%s\"\n",
entry_at_name, 0, 0 );
Debug( LDAP_DEBUG_ARGS,
"=> bdb_attribute: tr dn: \"%s\"\n",
target ? target->e_ndn : "", 0, 0 );
#endif
if( op ) boi = (struct bdb_op_info *) op->o_private;
if( boi != NULL && be == boi->boi_bdb ) {
txn = boi->boi_txn;
}
if ( txn != NULL ) {
locker = TXN_ID ( txn );
} else {
rc = LOCK_ID ( bdb->bi_dbenv, &locker );
switch(rc) {
case 0:
break;
default:
return LDAP_OTHER;
}
}
if (target != NULL && dn_match(&target->e_nname, entry_ndn)) {
/* we already have a LOCKED copy of the entry */
e = target;
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, DETAIL1,
"bdb_attribute: target is LOCKED (%s)\n", entry_ndn->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_ARGS,
"=> bdb_attribute: target is entry: \"%s\"\n",
entry_ndn->bv_val, 0, 0 );
#endif
} else {
dn2entry_retry:
/* can we find entry */
rc = bdb_dn2entry_r( be, NULL, entry_ndn, &e, NULL, 0, locker, &lock );
switch( rc ) {
case DB_NOTFOUND:
case 0:
break;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto dn2entry_retry;
default:
if( txn != NULL ) {
boi->boi_err = rc;
}
else {
LOCK_ID_FREE( bdb->bi_dbenv, locker );
}
return (rc != LDAP_BUSY) ? LDAP_OTHER : LDAP_BUSY;
}
if (e == NULL) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, INFO,
"bdb_attribute: cannot find entry (%s)\n",
entry_ndn->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_ACL,
"=> bdb_attribute: cannot find entry: \"%s\"\n",
entry_ndn->bv_val, 0, 0 );
#endif
if ( txn == NULL ) {
LOCK_ID_FREE( bdb->bi_dbenv, locker );
}
return LDAP_NO_SUCH_OBJECT;
}
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, DETAIL1, "bdb_attribute: found entry (%s)\n",
entry_ndn->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_ACL,
"=> bdb_attribute: found entry: \"%s\"\n",
entry_ndn->bv_val, 0, 0 );
#endif
}
#ifdef BDB_ALIASES
/* find attribute values */
if( is_entry_alias( e ) ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, INFO,
"bdb_attribute: entry (%s) is an alias\n", e->e_dn, 0, 0 );
#else
Debug( LDAP_DEBUG_ACL,
"<= bdb_attribute: entry is an alias\n", 0, 0, 0 );
#endif
rc = LDAP_ALIAS_PROBLEM;
goto return_results;
}
#endif
if( is_entry_referral( e ) ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, INFO,
"bdb_attribute: entry (%s) is a referral.\n", e->e_dn, 0, 0);
#else
Debug( LDAP_DEBUG_ACL,
"<= bdb_attribute: entry is a referral\n", 0, 0, 0 );
#endif
rc = LDAP_REFERRAL;
goto return_results;
}
if (conn != NULL && op != NULL
&& access_allowed( be, conn, op, e, slap_schema.si_ad_entry,
NULL, ACL_READ, &acl_state ) == 0 )
{
rc = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
if ((attr = attr_find(e->e_attrs, entry_at)) == NULL) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, INFO,
"bdb_attribute: failed to find %s.\n", entry_at_name, 0, 0 );
#else
Debug( LDAP_DEBUG_ACL,
"<= bdb_attribute: failed to find %s\n",
entry_at_name, 0, 0 );
#endif
rc = LDAP_NO_SUCH_ATTRIBUTE;
goto return_results;
}
if (conn != NULL && op != NULL
&& access_allowed( be, conn, op, e, entry_at, NULL, ACL_READ,
&acl_state ) == 0 )
{
rc = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
for ( i = 0; attr->a_vals[i].bv_val != NULL; i++ ) {
/* count them */
}
v = (BerVarray) ch_malloc( sizeof(struct berval) * (i+1) );
for ( i=0, j=0; attr->a_vals[i].bv_val != NULL; i++ ) {
if( conn != NULL
&& op != NULL
&& access_allowed(be, conn, op, e, entry_at,
&attr->a_vals[i], ACL_READ, &acl_state ) == 0)
{
continue;
}
ber_dupbv( &v[j], &attr->a_vals[i] );
if( v[j].bv_val != NULL ) j++;
}
if( j == 0 ) {
ch_free( v );
*vals = NULL;
rc = LDAP_INSUFFICIENT_ACCESS;
} else {
v[j].bv_val = NULL;
v[j].bv_len = 0;
*vals = v;
rc = LDAP_SUCCESS;
}
return_results:
if( target != e ) {
/* free entry */
bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
}
if ( txn == NULL ) {
LOCK_ID_FREE( bdb->bi_dbenv, locker );
}
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ENTRY, "bdb_attribute: rc=%d nvals=%d.\n", rc, j, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_attribute: rc=%d nvals=%d\n",
rc, j, 0 );
#endif
return(rc);
}