495 lines
15 KiB
C
495 lines
15 KiB
C
/* dhcpctl.c
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Subroutines providing general support for objects. */
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/*
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* Copyright (c) 1999-2000 Internet Software Consortium.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of The Internet Software Consortium nor the names
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* of its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This software has been written for the Internet Software Consortium
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* by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
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* To learn more about the Internet Software Consortium, see
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* ``http://www.isc.org/''. To learn more about Vixie Enterprises,
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* see ``http://www.vix.com''. To learn more about Nominum, Inc., see
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* ``http://www.nominum.com''.
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*/
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#include <omapip/omapip_p.h>
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#include "dhcpctl.h"
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omapi_object_type_t *dhcpctl_callback_type;
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omapi_object_type_t *dhcpctl_remote_type;
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/* dhcpctl_initialize ()
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Must be called before any other dhcpctl function. */
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dhcpctl_status dhcpctl_initialize ()
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{
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omapi_init();
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omapi_object_type_register (&dhcpctl_callback_type,
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"dhcpctl-callback",
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dhcpctl_callback_set_value,
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dhcpctl_callback_get_value,
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dhcpctl_callback_destroy,
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dhcpctl_callback_signal_handler,
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dhcpctl_callback_stuff_values, 0, 0, 0);
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omapi_object_type_register (&dhcpctl_remote_type,
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"dhcpctl-remote",
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dhcpctl_remote_set_value,
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dhcpctl_remote_get_value,
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dhcpctl_remote_destroy,
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dhcpctl_remote_signal_handler,
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dhcpctl_remote_stuff_values, 0, 0, 0);
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return ISC_R_SUCCESS;
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}
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/* dhcpctl_connect
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synchronous
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returns nonzero status code if it didn't connect, zero otherwise
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stores connection handle through connection, which can be used
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for subsequent access to the specified server.
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server_name is the name of the server, and port is the TCP
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port on which it is listening.
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authinfo is the handle to an object containing authentication
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information. */
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dhcpctl_status dhcpctl_connect (dhcpctl_handle *connection,
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const char *server_name, int port,
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dhcpctl_handle authinfo)
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{
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isc_result_t status;
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status = omapi_generic_new (connection, MDL);
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if (status != ISC_R_SUCCESS) {
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return status;
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}
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status = omapi_protocol_connect (*connection, server_name,
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(unsigned)port, authinfo);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (connection, MDL);
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return status;
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}
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status = omapi_wait_for_completion (*connection, 0);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (connection, MDL);
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return status;
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}
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return status;
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}
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/* dhcpctl_wait_for_completion
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synchronous
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returns zero if the callback completes, a nonzero status if
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there was some problem relating to the wait operation. The
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status of the queued request will be stored through s, and
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will also be either zero for success or nonzero for some kind
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of failure. Never returns until completion or until the
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connection to the server is lost. This performs the same
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function as dhcpctl_set_callback and the subsequent callback,
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for programs that want to do inline execution instead of using
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callbacks. */
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dhcpctl_status dhcpctl_wait_for_completion (dhcpctl_handle h,
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dhcpctl_status *s)
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{
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isc_result_t status;
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status = omapi_wait_for_completion (h, 0);
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if (status != ISC_R_SUCCESS)
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return status;
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if (h -> type == dhcpctl_remote_type)
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*s = ((dhcpctl_remote_object_t *)h) -> waitstatus;
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return ISC_R_SUCCESS;
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}
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/* dhcpctl_get_value
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synchronous
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returns zero if the call succeeded, a nonzero status code if
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it didn't.
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result is the address of an empty data string (initialized
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with bzero or cleared with data_string_forget). On
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successful completion, the addressed data string will contain
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the value that was fetched.
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dhcpctl_handle refers to some dhcpctl item
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value_name refers to some value related to that item - e.g.,
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for a handle associated with a completed host lookup, value
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could be one of "hardware-address", "dhcp-client-identifier",
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"known" or "client-hostname". */
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dhcpctl_status dhcpctl_get_value (dhcpctl_data_string *result,
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dhcpctl_handle h, const char *value_name)
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{
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isc_result_t status;
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omapi_value_t *tv = (omapi_value_t *)0;
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omapi_data_string_t *value = (omapi_data_string_t *)0;
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unsigned len;
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int ip;
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status = omapi_get_value_str (h, (omapi_object_t *)0, value_name, &tv);
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if (status != ISC_R_SUCCESS)
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return status;
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switch (tv -> value -> type) {
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case omapi_datatype_int:
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len = sizeof (int);
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break;
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case omapi_datatype_string:
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case omapi_datatype_data:
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len = tv -> value -> u.buffer.len;
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break;
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case omapi_datatype_object:
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len = sizeof (omapi_handle_t);
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break;
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default:
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omapi_typed_data_dereference (&tv -> value, MDL);
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return ISC_R_UNEXPECTED;
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}
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status = omapi_data_string_new (result, len, MDL);
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if (status != ISC_R_SUCCESS) {
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omapi_typed_data_dereference (&tv -> value, MDL);
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return status;
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}
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switch (tv -> value -> type) {
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case omapi_datatype_int:
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ip = htonl (tv -> value -> u.integer);
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memcpy ((*result) -> value, &ip, sizeof ip);
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break;
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case omapi_datatype_string:
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case omapi_datatype_data:
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memcpy ((*result) -> value,
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tv -> value -> u.buffer.value,
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tv -> value -> u.buffer.len);
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break;
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case omapi_datatype_object:
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ip = htonl (tv -> value -> u.object -> handle);
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memcpy ((*result) -> value, &ip, sizeof ip);
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break;
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}
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omapi_value_dereference (&tv, MDL);
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return ISC_R_SUCCESS;
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}
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/* dhcpctl_get_boolean
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like dhcpctl_get_value, but more convenient for boolean
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values, since no data_string needs to be dealt with. */
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dhcpctl_status dhcpctl_get_boolean (int *result,
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dhcpctl_handle h, const char *value_name)
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{
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isc_result_t status;
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dhcpctl_data_string data = (dhcpctl_data_string)0;
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int rv;
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status = dhcpctl_get_value (&data, h, value_name);
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if (status != ISC_R_SUCCESS)
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return status;
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if (data -> len != sizeof rv) {
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omapi_data_string_dereference (&data, MDL);
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return ISC_R_UNEXPECTED;
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}
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memcpy (&rv, data -> value, sizeof rv);
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*result = ntohl (rv);
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return ISC_R_SUCCESS;
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}
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/* dhcpctl_set_value
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Sets a value on an object referred to by a dhcpctl_handle.
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The opposite of dhcpctl_get_value. Does not update the
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server - just sets the value on the handle. */
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dhcpctl_status dhcpctl_set_value (dhcpctl_handle h, dhcpctl_data_string value,
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const char *value_name)
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{
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isc_result_t status;
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omapi_typed_data_t *tv = (omapi_typed_data_t *)0;
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omapi_data_string_t *name = (omapi_data_string_t *)0;
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int len;
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int ip;
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status = omapi_data_string_new (&name, strlen (value_name), MDL);
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if (status != ISC_R_SUCCESS)
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return status;
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memcpy (name -> value, value_name, strlen (value_name));
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status = omapi_typed_data_new (MDL, &tv, omapi_datatype_data,
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value -> len);
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if (status != ISC_R_SUCCESS) {
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omapi_data_string_dereference (&name, MDL);
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return status;
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}
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memcpy (tv -> u.buffer.value, value -> value, value -> len);
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status = omapi_set_value (h, (omapi_object_t *)0, name, tv);
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omapi_data_string_dereference (&name, MDL);
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omapi_typed_data_dereference (&tv, MDL);
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return status;
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}
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/* dhcpctl_set_string_value
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Sets a NUL-terminated ASCII value on an object referred to by
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a dhcpctl_handle. like dhcpctl_set_value, but saves the
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trouble of creating a data_string for a NUL-terminated string.
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Does not update the server - just sets the value on the handle. */
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dhcpctl_status dhcpctl_set_string_value (dhcpctl_handle h, const char *value,
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const char *value_name)
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{
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isc_result_t status;
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omapi_typed_data_t *tv = (omapi_typed_data_t *)0;
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omapi_data_string_t *name = (omapi_data_string_t *)0;
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int len;
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int ip;
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status = omapi_data_string_new (&name, strlen (value_name), MDL);
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if (status != ISC_R_SUCCESS)
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return status;
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memcpy (name -> value, value_name, strlen (value_name));
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status = omapi_typed_data_new (MDL, &tv, omapi_datatype_string, value);
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if (status != ISC_R_SUCCESS) {
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omapi_data_string_dereference (&name, MDL);
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return status;
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}
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status = omapi_set_value (h, (omapi_object_t *)0, name, tv);
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omapi_data_string_dereference (&name, MDL);
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omapi_typed_data_dereference (&tv, MDL);
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return status;
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}
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/* dhcpctl_set_boolean_value
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Sets a boolean value on an object - like dhcpctl_set_value,
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only more convenient for booleans. */
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dhcpctl_status dhcpctl_set_boolean_value (dhcpctl_handle h, int value,
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const char *value_name)
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{
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isc_result_t status;
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omapi_typed_data_t *tv = (omapi_typed_data_t *)0;
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omapi_data_string_t *name = (omapi_data_string_t *)0;
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int len;
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int ip;
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status = omapi_data_string_new (&name, strlen (value_name), MDL);
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if (status != ISC_R_SUCCESS)
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return status;
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memcpy (name -> value, value_name, strlen (value_name));
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status = omapi_typed_data_new (MDL, &tv, omapi_datatype_int, value);
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if (status != ISC_R_SUCCESS) {
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omapi_data_string_dereference (&name, MDL);
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return status;
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}
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status = omapi_set_value (h, (omapi_object_t *)0, name, tv);
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omapi_data_string_dereference (&name, MDL);
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omapi_typed_data_dereference (&tv, MDL);
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return status;
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}
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/* dhcpctl_set_int_value
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Sets a boolean value on an object - like dhcpctl_set_value,
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only more convenient for booleans. */
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dhcpctl_status dhcpctl_set_int_value (dhcpctl_handle h, int value,
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const char *value_name)
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{
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isc_result_t status;
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omapi_typed_data_t *tv = (omapi_typed_data_t *)0;
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omapi_data_string_t *name = (omapi_data_string_t *)0;
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int len;
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int ip;
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status = omapi_data_string_new (&name, strlen (value_name), MDL);
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if (status != ISC_R_SUCCESS)
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return status;
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memcpy (name -> value, value_name, strlen (value_name));
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status = omapi_typed_data_new (MDL, &tv, omapi_datatype_int, value);
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if (status != ISC_R_SUCCESS) {
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omapi_data_string_dereference (&name, MDL);
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return status;
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}
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status = omapi_set_value (h, (omapi_object_t *)0, name, tv);
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omapi_data_string_dereference (&name, MDL);
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omapi_typed_data_dereference (&tv, MDL);
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return status;
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}
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/* dhcpctl_object_update
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Queues an update on the object referenced by the handle (there
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can't be any other work in progress on the handle). An
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update means local parameters will be sent to the server. */
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dhcpctl_status dhcpctl_object_update (dhcpctl_handle connection,
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dhcpctl_handle h)
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{
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isc_result_t status;
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omapi_object_t *message = (omapi_object_t *)0;
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status = omapi_message_new (&message, MDL);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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status = omapi_set_int_value (message, (omapi_object_t *)0,
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"op", OMAPI_OP_UPDATE);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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status = omapi_set_object_value (message, (omapi_object_t *)0,
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"object", h);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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omapi_message_register (message);
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status = omapi_protocol_send_message (connection -> outer,
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(omapi_object_t *)0,
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message, (omapi_object_t *)0);
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omapi_object_dereference (&message, MDL);
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return status;
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}
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/* Requests a refresh on the object referenced by the handle (there
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can't be any other work in progress on the handle). A
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refresh means local parameters are updated from the server. */
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dhcpctl_status dhcpctl_object_refresh (dhcpctl_handle connection,
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dhcpctl_handle h)
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{
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isc_result_t status;
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omapi_object_t *message = (omapi_object_t *)0;
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status = omapi_message_new (&message, MDL);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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status = omapi_set_int_value (message, (omapi_object_t *)0,
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"op", OMAPI_OP_REFRESH);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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status = omapi_set_int_value (message, (omapi_object_t *)0,
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"handle", (int)(h -> handle));
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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omapi_message_register (message);
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status = omapi_protocol_send_message (connection -> outer,
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(omapi_object_t *)0,
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message, (omapi_object_t *)0);
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omapi_object_dereference (&message, MDL);
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return status;
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}
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/* Requests the removal of the object referenced by the handle (there
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can't be any other work in progress on the handle). A
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removal means that all searchable references to the object on the
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server are deleted. */
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dhcpctl_status dhcpctl_object_remove (dhcpctl_handle connection,
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dhcpctl_handle h)
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{
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isc_result_t status;
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omapi_object_t *message = (omapi_object_t *)0;
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dhcpctl_remote_object_t *ro;
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if (h -> type != dhcpctl_remote_type)
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return ISC_R_INVALIDARG;
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ro = (dhcpctl_remote_object_t *)h;
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status = omapi_message_new (&message, MDL);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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status = omapi_set_int_value (message, (omapi_object_t *)0,
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"op", OMAPI_OP_DELETE);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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status = omapi_set_int_value (message, (omapi_object_t *)0, "handle",
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(int)(ro -> remote_handle));
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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status = omapi_set_object_value (message, (omapi_object_t *)0,
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"notify-object", h);
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if (status != ISC_R_SUCCESS) {
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omapi_object_dereference (&message, MDL);
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return status;
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}
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omapi_message_register (message);
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status = omapi_protocol_send_message (connection -> outer,
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(omapi_object_t *)0,
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message, (omapi_object_t *)0);
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omapi_object_dereference (&message, MDL);
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return status;
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}
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isc_result_t dhcpctl_data_string_dereference (dhcpctl_data_string *vp,
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|
const char *file, int line)
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|
{
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return omapi_data_string_dereference (vp, file, line);
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}
|