text: /* group.c - ldbm backend acl group routine */
  /* $OpenLDAP: pkg/ldap/servers/slapd/back-ldbm/group.c,v 1.17.2.4 2000/06/17 16:16:59 kurt Exp $ */
  /*
   * Copyright 1998-2000 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-ldbm.h"
  #include "proto-back-ldbm.h"
  
  
  /* return 0 IFF op_dn is a value in member attribute
   * of entry with gr_dn AND that entry has an objectClass
   * value of groupOfNames
   */
  int
  ldbm_back_group(
  	Backend	*be,
  	Entry	*target,
  	const char	*gr_ndn,
  	const char	*op_ndn,
  	ObjectClass *group_oc,
  	AttributeDescription *group_at
  )
  {
  	struct ldbminfo *li = (struct ldbminfo *) be->be_private;    
  	Entry        *e;
  	int          rc = 1;
  	Attribute   *attr;
  	struct berval bv;
  
  	AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
  	const char *group_oc_name = NULL;
  	const char *group_at_name = group_at->ad_cname->bv_val;
  
  	if( group_oc->soc_names && group_oc->soc_names[0] ) {
  		group_oc_name = group_oc->soc_names[0];
  	} else {
  		group_oc_name = group_oc->soc_oid;
  	}
  
  	Debug( LDAP_DEBUG_ARGS,
  		"=> ldbm_back_group: gr dn: \"%s\"\n",
  		gr_ndn, 0, 0 ); 
  	Debug( LDAP_DEBUG_ARGS,
  		"=> ldbm_back_group: op dn: \"%s\"\n",
  		op_ndn, 0, 0 ); 
  	Debug( LDAP_DEBUG_ARGS,
  		"=> ldbm_back_group: oc: \"%s\" at: \"%s\"\n", 
  		group_oc_name, group_at_name, 0 ); 
  
  	Debug( LDAP_DEBUG_ARGS,
  		"=> ldbm_back_group: tr dn: \"%s\"\n",
  		target->e_ndn, 0, 0 ); 
  
  	if (strcmp(target->e_ndn, gr_ndn) == 0) {
  		/* we already have a LOCKED copy of the entry */
  		e = target;
          	Debug( LDAP_DEBUG_ARGS,
  			"=> ldbm_back_group: target is group: \"%s\"\n",
  			gr_ndn, 0, 0 );
  
  	} else {
  		/* can we find group entry with reader lock */
  		if ((e = dn2entry_r(be, gr_ndn, NULL )) == NULL) {
  			Debug( LDAP_DEBUG_ACL,
  				"=> ldbm_back_group: cannot find group: \"%s\"\n",
  					gr_ndn, 0, 0 ); 
  			return( 1 );
  		}
  		
  		Debug( LDAP_DEBUG_ACL,
  			"=> ldbm_back_group: found group: \"%s\"\n",
  			gr_ndn, 0, 0 ); 
      }
  
  	/* find it's objectClass and member attribute values
  	 * make sure this is a group entry
  	 * finally test if we can find op_dn in the member attribute value list *
  	 */
          
  	rc = 1;
          
  	
  	if( is_entry_alias( e ) ) {
  		Debug( LDAP_DEBUG_ACL,
  			"<= ldbm_back_group: group is an alias\n", 0, 0, 0 );
  		goto return_results;
  	}
  
  	if( is_entry_referral( e ) ) {
  		Debug( LDAP_DEBUG_ACL,
  			"<= ldbm_back_group: group is an referral\n", 0, 0, 0 );
  		goto return_results;
  	}
  
  	if( !is_entry_objectclass( e, group_oc ) ) {
  		Debug( LDAP_DEBUG_ACL,
  			"<= ldbm_back_group: failed to find %s in objectClass\n", 
  				group_oc_name, 0, 0 ); 
  		goto return_results;
  	}
  
  	if ((attr = attr_find(e->e_attrs, group_at)) == NULL) {
  		Debug( LDAP_DEBUG_ACL,
  			"<= ldbm_back_group: failed to find %s\n",
  			group_at_name, 0, 0 ); 
  		goto return_results;
  	}
  
  	Debug( LDAP_DEBUG_ACL,
  		"<= ldbm_back_group: found objectClass %s and %s\n",
  		group_oc_name, group_at_name, 0 ); 
  
  	bv.bv_val = (char *) op_ndn;
  	bv.bv_len = strlen( op_ndn );         
  
  	if( value_find( group_at, attr->a_vals, &bv ) != LDAP_SUCCESS ) {
  		Debug( LDAP_DEBUG_ACL,
  			"<= ldbm_back_group: \"%s\" not in \"%s\": %s\n", 
  			op_ndn, gr_ndn, group_at_name ); 
  		goto return_results;
  	}
  
  
  
  	Debug( LDAP_DEBUG_ACL,
  		"<= ldbm_back_group: \"%s\" is in \"%s\": %s\n", 
  		op_ndn, gr_ndn, group_at_name ); 
  
  	rc = 0;
  
  return_results:
  	if( target != e ) {
  		/* free entry and reader lock */
  		cache_return_entry_r( &li->li_cache, e );                 
  	}
  
  	Debug( LDAP_DEBUG_TRACE, "ldbm_back_group: rc=%d\n", rc, 0, 0 ); 
  	return(rc);
  }
  
  