modrdn.c

开放源码的ldap系统

						LDAP_INSUFFICIENT_ACCESS,
						NULL, NULL, NULL, NULL );
					goto return_results;
				}
			}
		}

		Debug( LDAP_DEBUG_TRACE,
		       "ldbm_back_modrdn: wr to new parent's children OK\n",
		       0, 0 , 0 );

		new_parent_dn = np_dn;
	}
	
	/* Build target dn and make sure target entry doesn't exist already. */
	build_new_dn( &new_dn, e->e_dn, new_parent_dn, newrdn ); 

	new_ndn = ch_strdup(new_dn);
	(void) dn_normalize( new_ndn );

	Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: new ndn=%s\n",
	       new_ndn, 0, 0 );

	/* check for abandon */
	ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
	if ( op->o_abandon ) {
		ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
		goto return_results;
	}

	ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
	if ( ( rc_id = dn2id ( be, new_ndn, &id ) ) || id != NOID ) {
		/* if (rc_id) something bad happened to ldbm cache */
		send_ldap_result( conn, op, 
			rc_id ? LDAP_OPERATIONS_ERROR : LDAP_ALREADY_EXISTS,
			NULL, NULL, NULL, NULL );
		goto return_results;
	}

	Debug( LDAP_DEBUG_TRACE,
	       "ldbm_back_modrdn: new ndn=%s does not exist\n",
	       new_ndn, 0, 0 );


	/* Get attribute types and values of our new rdn, we will
	 * need to add that to our new entry
	 */
	if ( rdn_attrs( newrdn, &new_rdn_types, &new_rdn_vals ) ) {
		Debug( LDAP_DEBUG_TRACE,
		       "ldbm_back_modrdn: can't figure out type(s)/value(s) of newrdn\n",
		       0, 0, 0 );

		send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
			NULL, "unable to parse type(s)/value(s) used in RDN", NULL, NULL );
		goto return_results;		
	}

	Debug( LDAP_DEBUG_TRACE,
	       "ldbm_back_modrdn: new_rdn_val=\"%s\", new_rdn_type=\"%s\"\n",
	       new_rdn_vals[0], new_rdn_types[0], 0 );

	/* Retrieve the old rdn from the entry's dn */
	if ( (old_rdn = dn_rdn( be, dn )) == NULL ) {
		Debug( LDAP_DEBUG_TRACE,
		       "ldbm_back_modrdn: can't figure out old_rdn from dn\n",
		       0, 0, 0 );

		send_ldap_result( conn, op, LDAP_OTHER,
			NULL, "could not parse old DN", NULL, NULL );
		goto return_results;		
	}

	if ( rdn_attrs( old_rdn, &old_rdn_types, &old_rdn_vals ) ) {
		Debug( LDAP_DEBUG_TRACE,
		       "ldbm_back_modrdn: can't figure out the old_rdn type(s)/value(s)\n",
		       0, 0, 0 );

		send_ldap_result( conn, op, LDAP_OTHER,
			NULL, "unable to parse type(s)/value(s) used in RDN from old DN", NULL, NULL );
		goto return_results;		
	}
	
	if ( newSuperior == NULL
		&& charray_strcasecmp( (const char **)old_rdn_types, (const char **)new_rdn_types ) != 0 )
	{
	    /* Not a big deal but we may say something */
	    Debug( LDAP_DEBUG_TRACE,
		   "ldbm_back_modrdn: old_rdn_type=%s, new_rdn_type=%s!\n",
		   old_rdn_types[0], new_rdn_types[0], 0 );
	}		

	Debug( LDAP_DEBUG_TRACE, "ldbm_back_modrdn: DN_X500\n",
	       0, 0, 0 );

	mod = NULL;
	for ( a_cnt = 0; new_rdn_types[a_cnt]; a_cnt++ ) {
		int rc;
		Modifications *mod_tmp;
		struct berval val;

		mod_tmp = (Modifications *)ch_malloc( sizeof( Modifications ) );

		mod_tmp->sml_desc = NULL;
		rc = slap_str2ad( new_rdn_types[a_cnt], 
				&mod_tmp->sml_desc, &text );

		if ( rc != LDAP_SUCCESS ) {
			Debug( LDAP_DEBUG_TRACE,
				"ldbm_back_modrdn: %s: %s (new)\n",
				text, new_rdn_types[a_cnt], 0 );

			send_ldap_result( conn, op, rc,
				NULL, text, NULL, NULL );

			goto return_results;		
		}

		val.bv_val = new_rdn_vals[a_cnt];
		val.bv_len = strlen( val.bv_val );
		if ( ! access_allowed( be, conn, op, e, 
				mod_tmp->sml_desc, &val, ACL_WRITE ) ) {
			Debug( LDAP_DEBUG_TRACE,
				"ldbm_back_modrdn: access not allowed "
				"to attr \"%s\"\n%s%s",
				new_rdn_types[a_cnt], "", "" );
			send_ldap_result( conn, op, 
				LDAP_INSUFFICIENT_ACCESS,
				NULL, NULL, NULL, NULL );

			goto return_results;
		}

		mod_tmp->sml_bvalues = (struct berval **)ch_malloc( 2 * sizeof(struct berval *) );
		mod_tmp->sml_bvalues[0] = ber_bvstrdup( new_rdn_vals[a_cnt] );
		mod_tmp->sml_bvalues[1] = NULL;
		mod_tmp->sml_op = SLAP_MOD_SOFTADD;
		mod_tmp->sml_next = mod;
		mod = mod_tmp;
	}

	/* Remove old rdn value if required */
	if ( deleteoldrdn ) {
		/* Get value of old rdn */
		if ( old_rdn_vals == NULL ) {
			Debug( LDAP_DEBUG_TRACE,
			       "ldbm_back_modrdn: can't figure out oldRDN value(s) from old RDN\n",
			       0, 0, 0 );

			send_ldap_result( conn, op, LDAP_OTHER,
				NULL, "could not parse value(s) from old RDN", NULL, NULL );
			goto return_results;		
		}

		for ( d_cnt = 0; old_rdn_types[d_cnt]; d_cnt++ ) {    
			int rc;
			Modifications *mod_tmp;
			struct berval val;

			mod_tmp = (Modifications *)ch_malloc( sizeof( Modifications ) );

			mod_tmp->sml_desc = NULL;
			rc = slap_str2ad( old_rdn_types[d_cnt], 
					&mod_tmp->sml_desc, &text );

			if ( rc != LDAP_SUCCESS ) {
				Debug( LDAP_DEBUG_TRACE,
					"ldbm_back_modrdn: %s: %s (old)\n",
					text, old_rdn_types[d_cnt], 0 );

				send_ldap_result( conn, op, rc,
					NULL, text, NULL, NULL );

				goto return_results;
			}

			val.bv_val = old_rdn_vals[d_cnt];
			val.bv_len = strlen( val.bv_val );
			if ( ! access_allowed( be, conn, op, e, 
					mod_tmp->sml_desc, &val, ACL_WRITE ) ) {
				Debug( LDAP_DEBUG_TRACE,
					"ldbm_back_modrdn: access not allowed "
					"to attr \"%s\"\n%s%s",
					old_rdn_types[d_cnt], "", "" );
				send_ldap_result( conn, op, 
					LDAP_INSUFFICIENT_ACCESS,
					NULL, NULL, NULL, NULL );

				goto return_results;
			}

			/* Remove old value of rdn as an attribute. */
			mod_tmp->sml_bvalues = (struct berval **)ch_malloc( 2 * sizeof(struct berval *) );
			mod_tmp->sml_bvalues[0] = ber_bvstrdup( old_rdn_vals[d_cnt] );
			mod_tmp->sml_bvalues[1] = NULL;
			mod_tmp->sml_op = LDAP_MOD_DELETE;
			mod_tmp->sml_next = mod;
			mod = mod_tmp;

			Debug( LDAP_DEBUG_TRACE,
			       "ldbm_back_modrdn: removing old_rdn_val=%s\n",
			       old_rdn_vals[0], 0, 0 );
		}
	}

	
	/* check for abandon */
	ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
	if ( op->o_abandon ) {
		ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
		goto return_results;
	}
	ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );

	/* delete old one */
	if ( dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
		send_ldap_result( conn, op, LDAP_OTHER,
			NULL, "DN index delete fail", NULL, NULL );
		goto return_results;
	}

	(void) cache_delete_entry( &li->li_cache, e );
	rc = MUST_DESTROY;

	/* XXX: there is no going back! */

	free( e->e_dn );
	free( e->e_ndn );
	e->e_dn = new_dn;
	e->e_ndn = new_ndn;
	new_dn = NULL;
	new_ndn = NULL;

	/* add new one */
	if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
		send_ldap_result( conn, op, LDAP_OTHER,
			NULL, "DN index add failed", NULL, NULL );
		goto return_results;
	}

	/* modify memory copy of entry */
	rc = ldbm_modify_internal( be, conn, op, dn, &mod[0], e,
		&text, textbuf, textlen );

	if( rc != LDAP_SUCCESS ) {
		if( rc != SLAPD_ABANDON ) {
			send_ldap_result( conn, op, rc,
				NULL, text, NULL, NULL );
		}

		/* here we may try to delete the newly added dn */
		if ( dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
			/* we already are in trouble ... */
			;
		}
	    
    		goto return_results;
	}
	
	(void) cache_update_entry( &li->li_cache, e );

	/* NOTE: after this you must not free new_dn or new_ndn!
	 * They are used by cache.
	 */

	/* id2entry index */
	if ( id2entry_add( be, e ) != 0 ) {
		send_ldap_result( conn, op, LDAP_OTHER,
			NULL, "entry update failed", NULL, NULL );
		goto return_results;
	}

	send_ldap_result( conn, op, LDAP_SUCCESS,
		NULL, NULL, NULL, NULL );
	rc = 0;
	cache_entry_commit( e );

return_results:
	if( new_dn != NULL ) free( new_dn );
	if( new_ndn != NULL ) free( new_ndn );

	if( p_dn != NULL ) free( p_dn );
	if( p_ndn != NULL ) free( p_ndn );

	/* LDAP v2 supporting correct attribute handling. */
	if( new_rdn_types != NULL ) charray_free( new_rdn_types );
	if( new_rdn_vals != NULL ) charray_free( new_rdn_vals );
	if( old_rdn != NULL ) free(old_rdn);
	if( old_rdn_types != NULL ) charray_free( old_rdn_types );
	if( old_rdn_vals != NULL ) charray_free( old_rdn_vals );

	if ( mod != NULL ) {
		slap_mods_free( mod );
	}

	/* LDAP v3 Support */
	if ( np_dn != NULL ) free( np_dn );
	if ( np_ndn != NULL ) free( np_ndn );

	if( np != NULL ) {
		/* free new parent and writer lock */
		cache_return_entry_w( &li->li_cache, np );
	}

	if( p != NULL ) {
		/* free parent and writer lock */
		cache_return_entry_w( &li->li_cache, p );
	}

	if ( rootlock ) {
		/* release root writer lock */
		ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
	}

	/* free entry and writer lock */
	cache_return_entry_w( &li->li_cache, e );
	if ( rc == MUST_DESTROY ) {
		/* if rc == MUST_DESTROY the entry is uncached 
		 * and its private data is destroyed; 
		 * the entry must be freed */
		entry_free( e );
	}
	return( rc );
}