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

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/* attribute.c - ldbm backend acl attribute routine */
/* $OpenLDAP$ */
/*
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* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
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* 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-ldbm.h"
#include "proto-back-ldbm.h"
/* return LDAP_SUCCESS IFF we can retrieve the attributes
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* of entry with e_ndn
*/
int
ldbm_back_attribute(
Backend *be,
Connection *conn,
Operation *op,
Entry *target,
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struct berval *entry_ndn,
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AttributeDescription *entry_at,
BerVarray *vals )
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{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
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Entry *e;
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int rc;
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Attribute *attr;
BerVarray v;
const char *entry_at_name = entry_at->ad_cname.bv_val;
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struct berval *iv, *jv;
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#ifdef NEW_LOGGING
LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
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"ldbm_back_attribute: gr dn: \"%s\"\n", entry_ndn->bv_val ));
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LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
"ldbm_back_attribute: at: \"%s\"\n", entry_at_name));
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LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
"ldbm_back_attribute: tr dn: \"%s\"\n",
target ? target->e_ndn : "" ));
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#else
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Debug( LDAP_DEBUG_ARGS,
"=> ldbm_back_attribute: gr dn: \"%s\"\n",
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entry_ndn->bv_val, 0, 0 );
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Debug( LDAP_DEBUG_ARGS,
"=> ldbm_back_attribute: at: \"%s\"\n",
entry_at_name, 0, 0 );
Debug( LDAP_DEBUG_ARGS,
"=> ldbm_back_attribute: tr dn: \"%s\"\n",
target ? target->e_ndn : "", 0, 0 );
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#endif
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if (target != NULL && dn_match( &target->e_nname, entry_ndn) ) {
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/* we already have a LOCKED copy of the entry */
e = target;
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#ifdef NEW_LOGGING
LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
"ldbm_back_attribute: target is LOCKED (%s)\n",
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entry_ndn->bv_val ));
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#else
Debug( LDAP_DEBUG_ARGS,
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"=> ldbm_back_attribute: target is entry: \"%s\"\n",
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entry_ndn->bv_val, 0, 0 );
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#endif
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} else {
/* can we find entry with reader lock */
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if ((e = dn2entry_r(be, entry_ndn, NULL )) == NULL) {
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#ifdef NEW_LOGGING
LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
"ldbm_back_attribute: cannot find entry (%s)\n",
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entry_ndn->bv_val ));
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#else
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Debug( LDAP_DEBUG_ACL,
"=> ldbm_back_attribute: cannot find entry: \"%s\"\n",
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entry_ndn->bv_val, 0, 0 );
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#endif
return LDAP_NO_SUCH_OBJECT;
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}
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#ifdef NEW_LOGGING
LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
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"ldbm_back_attribute: found entry (%s)\n",
entry_ndn->bv_val ));
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#else
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Debug( LDAP_DEBUG_ACL,
"=> ldbm_back_attribute: found entry: \"%s\"\n",
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entry_ndn->bv_val, 0, 0 );
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#endif
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}
/* find attribute values */
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if( is_entry_alias( e ) ) {
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#ifdef NEW_LOGGING
LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
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"ldbm_back_attribute: entry (%s) is an alias\n", e->e_dn ));
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#else
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Debug( LDAP_DEBUG_ACL,
"<= ldbm_back_attribute: entry is an alias\n", 0, 0, 0 );
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#endif
rc = LDAP_ALIAS_PROBLEM;
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goto return_results;
}
if( is_entry_referral( e ) ) {
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#ifdef NEW_LOGGING
LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
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"ldbm_back_attribute: entry (%s) is a referral.\n", e->e_dn ));
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#else
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Debug( LDAP_DEBUG_ACL,
"<= ldbm_back_attribute: entry is an referral\n", 0, 0, 0 );
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#endif
rc = LDAP_REFERRAL;
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goto return_results;
}
if (conn != NULL && op != NULL
&& access_allowed(be, conn, op, e, slap_schema.si_ad_entry,
NULL, ACL_READ) == 0)
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{
rc = LDAP_INSUFFICIENT_ACCESS;
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goto return_results;
}
if ((attr = attr_find(e->e_attrs, entry_at)) == NULL) {
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#ifdef NEW_LOGGING
LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
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"ldbm_back_attribute: failed to find %s.\n", entry_at_name ));
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#else
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Debug( LDAP_DEBUG_ACL,
"<= ldbm_back_attribute: failed to find %s\n",
entry_at_name, 0, 0 );
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#endif
rc = LDAP_NO_SUCH_ATTRIBUTE;
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goto return_results;
}
if (conn != NULL && op != NULL
&& access_allowed(be, conn, op, e, entry_at, NULL, ACL_READ) == 0)
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{
rc = LDAP_INSUFFICIENT_ACCESS;
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goto return_results;
}
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for ( iv = attr->a_vals; iv->bv_val != NULL; iv++ ) {
/* count them */
}
v = (BerVarray) ch_malloc( sizeof(struct berval) * ((iv - attr->a_vals)+1) );
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for ( iv=attr->a_vals, jv=v; iv->bv_val; iv++ ) {
if( conn != NULL
&& op != NULL
&& access_allowed(be, conn, op, e, entry_at,
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iv, ACL_READ) == 0)
{
continue;
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}
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ber_dupbv( jv, iv );
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if( jv->bv_val != NULL ) jv++;
}
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if( jv == v ) {
ch_free( v );
*vals = NULL;
rc = LDAP_INSUFFICIENT_ACCESS;
} else {
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jv->bv_val = NULL;
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*vals = v;
rc = LDAP_SUCCESS;
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}
return_results:
if( target != e ) {
/* free entry and reader lock */
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cache_return_entry_r( &li->li_cache, e );
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}
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#ifdef NEW_LOGGING
LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
"ldbm_back_attribute: rc=%d nvals=%d.\n",
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rc, jv - v ));
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#else
Debug( LDAP_DEBUG_TRACE,
"ldbm_back_attribute: rc=%d nvals=%d\n",
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rc, jv - v, 0 );
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#endif
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return(rc);
}