2014-02-04 23:13:52 +01:00
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/***
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This file is part of systemd.
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Copyright (C) 2013 Intel Corporation. All rights reserved.
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Copyright (C) 2014 Tom Gundersen
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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2014-02-27 01:24:05 +01:00
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#include <arpa/inet.h>
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2014-02-04 23:13:52 +01:00
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2014-02-27 01:24:05 +01:00
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#include "fileio.h"
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2014-11-01 18:59:55 +01:00
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#include "unaligned.h"
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2014-10-27 17:38:03 +01:00
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#include "in-addr-util.h"
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2015-05-18 17:10:07 +02:00
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#include "hostname-util.h"
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2014-02-04 23:13:52 +01:00
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#include "dhcp-protocol.h"
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2014-02-27 01:24:05 +01:00
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#include "dhcp-lease-internal.h"
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#include "sd-dhcp-lease.h"
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2014-05-18 22:02:42 +02:00
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#include "network-internal.h"
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2015-06-03 01:30:42 +02:00
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#include "dns-domain.h"
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2014-02-04 23:13:52 +01:00
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int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) {
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assert_return(lease, -EINVAL);
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assert_return(addr, -EINVAL);
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addr->s_addr = lease->address;
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return 0;
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}
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2014-06-26 15:18:43 +02:00
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int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) {
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assert_return(lease, -EINVAL);
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2014-11-19 13:57:08 +01:00
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assert_return(lifetime, -EINVAL);
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2014-06-26 15:18:43 +02:00
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*lifetime = lease->lifetime;
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return 0;
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}
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2014-02-04 23:13:52 +01:00
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int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) {
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assert_return(lease, -EINVAL);
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assert_return(mtu, -EINVAL);
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if (lease->mtu)
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*mtu = lease->mtu;
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else
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return -ENOENT;
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return 0;
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}
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2014-07-17 01:39:46 +02:00
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int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) {
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2014-02-04 23:13:52 +01:00
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assert_return(lease, -EINVAL);
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assert_return(addr, -EINVAL);
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if (lease->dns_size) {
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*addr = lease->dns;
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2014-07-17 01:39:46 +02:00
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return lease->dns_size;
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2014-02-04 23:13:52 +01:00
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} else
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return -ENOENT;
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return 0;
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}
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2014-07-17 01:39:46 +02:00
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int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) {
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2014-04-29 12:17:27 +02:00
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assert_return(lease, -EINVAL);
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assert_return(addr, -EINVAL);
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if (lease->ntp_size) {
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*addr = lease->ntp;
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2014-07-17 01:39:46 +02:00
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return lease->ntp_size;
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2014-04-29 12:17:27 +02:00
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} else
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return -ENOENT;
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return 0;
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}
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2014-02-04 23:13:52 +01:00
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int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) {
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assert_return(lease, -EINVAL);
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assert_return(domainname, -EINVAL);
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if (lease->domainname)
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*domainname = lease->domainname;
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else
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return -ENOENT;
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return 0;
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}
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int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) {
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assert_return(lease, -EINVAL);
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assert_return(hostname, -EINVAL);
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if (lease->hostname)
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*hostname = lease->hostname;
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else
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return -ENOENT;
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return 0;
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}
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2014-03-03 15:43:02 +01:00
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int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) {
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assert_return(lease, -EINVAL);
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assert_return(root_path, -EINVAL);
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if (lease->root_path)
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*root_path = lease->root_path;
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else
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return -ENOENT;
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return 0;
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}
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2014-02-04 23:13:52 +01:00
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int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) {
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assert_return(lease, -EINVAL);
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assert_return(addr, -EINVAL);
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2014-04-29 22:40:38 +02:00
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if (lease->router != INADDR_ANY)
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addr->s_addr = lease->router;
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else
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return -ENOENT;
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2014-02-04 23:13:52 +01:00
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return 0;
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}
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int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) {
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assert_return(lease, -EINVAL);
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assert_return(addr, -EINVAL);
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addr->s_addr = lease->subnet_mask;
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return 0;
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}
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2014-03-03 16:46:10 +01:00
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int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) {
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assert_return(lease, -EINVAL);
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assert_return(addr, -EINVAL);
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addr->s_addr = lease->server_address;
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return 0;
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}
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2014-03-03 17:13:59 +01:00
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int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) {
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assert_return(lease, -EINVAL);
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assert_return(addr, -EINVAL);
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addr->s_addr = lease->next_server;
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return 0;
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}
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2014-07-17 01:39:46 +02:00
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int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, struct sd_dhcp_route **routes) {
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2014-06-28 00:00:06 +02:00
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assert_return(lease, -EINVAL);
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assert_return(routes, -EINVAL);
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if (lease->static_route_size) {
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*routes = lease->static_route;
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2014-07-17 01:39:46 +02:00
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return lease->static_route_size;
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2014-06-28 00:00:06 +02:00
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} else
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return -ENOENT;
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return 0;
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}
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2015-07-09 18:04:01 +02:00
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int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const uint8_t **data,
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size_t *data_len) {
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assert_return(lease, -EINVAL);
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assert_return(data, -EINVAL);
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assert_return(data_len, -EINVAL);
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if (!lease->vendor_specific)
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return -ENOENT;
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*data = lease->vendor_specific;
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*data_len = lease->vendor_specific_len;
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return 0;
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}
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2014-02-04 23:13:52 +01:00
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sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) {
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if (lease)
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assert_se(REFCNT_INC(lease->n_ref) >= 2);
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return lease;
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}
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sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) {
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2015-01-13 23:03:11 +01:00
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if (lease && REFCNT_DEC(lease->n_ref) == 0) {
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2015-08-01 05:02:22 +02:00
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while (lease->private_options) {
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struct sd_dhcp_raw_option *option = lease->private_options;
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LIST_REMOVE(options, lease->private_options, option);
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free(option->data);
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free(option);
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}
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2014-02-04 23:13:52 +01:00
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free(lease->hostname);
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free(lease->domainname);
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free(lease->dns);
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2014-05-19 17:44:38 +02:00
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free(lease->ntp);
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2014-06-28 00:00:06 +02:00
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free(lease->static_route);
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2014-11-19 00:13:12 +01:00
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free(lease->client_id);
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2015-07-09 18:04:01 +02:00
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free(lease->vendor_specific);
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2014-02-04 23:13:52 +01:00
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free(lease);
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}
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return NULL;
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}
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2014-05-20 16:40:59 +02:00
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static void lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) {
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assert(option);
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assert(ret);
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if (len == 4) {
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2014-11-01 18:59:55 +01:00
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*ret = unaligned_read_be32((be32_t*) option);
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2014-05-20 16:40:59 +02:00
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if (*ret < min)
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*ret = min;
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}
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}
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2014-05-20 22:02:49 +02:00
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static void lease_parse_s32(const uint8_t *option, size_t len, int32_t *ret) {
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lease_parse_u32(option, len, (uint32_t *)ret, 0);
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}
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2014-05-20 16:40:59 +02:00
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static void lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) {
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assert(option);
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assert(ret);
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if (len == 2) {
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2014-11-01 18:59:55 +01:00
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*ret = unaligned_read_be16((be16_t*) option);
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2014-05-20 16:40:59 +02:00
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if (*ret < min)
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*ret = min;
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}
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}
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static void lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) {
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assert(option);
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assert(ret);
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if (len == 4)
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memcpy(ret, option, 4);
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}
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2014-05-20 22:02:49 +02:00
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static void lease_parse_bool(const uint8_t *option, size_t len, bool *ret) {
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assert(option);
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assert(ret);
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if (len == 1)
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*ret = !!(*option);
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}
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static void lease_parse_u8(const uint8_t *option, size_t len, uint8_t *ret, uint8_t min) {
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assert(option);
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assert(ret);
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if (len == 1) {
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*ret = *option;
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if (*ret < min)
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*ret = min;
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}
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}
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2014-05-20 16:40:59 +02:00
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static int lease_parse_string(const uint8_t *option, size_t len, char **ret) {
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assert(option);
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assert(ret);
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if (len >= 1) {
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char *string;
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string = strndup((const char *)option, len);
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if (!string)
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return -errno;
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free(*ret);
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*ret = string;
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}
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return 0;
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}
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2014-05-20 22:02:49 +02:00
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static int lease_parse_in_addrs_aux(const uint8_t *option, size_t len, struct in_addr **ret, size_t *ret_size, size_t mult) {
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2014-05-20 16:40:59 +02:00
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assert(option);
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assert(ret);
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assert(ret_size);
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2014-05-20 22:02:49 +02:00
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if (len && !(len % (4 * mult))) {
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2014-05-20 16:40:59 +02:00
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size_t size;
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struct in_addr *addresses;
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size = len / 4;
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addresses = newdup(struct in_addr, option, size);
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if (!addresses)
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return -ENOMEM;
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free(*ret);
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*ret = addresses;
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*ret_size = size;
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}
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return 0;
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}
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2014-05-20 22:02:49 +02:00
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static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *ret_size) {
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return lease_parse_in_addrs_aux(option, len, ret, ret_size, 1);
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}
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static int lease_parse_in_addrs_pairs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *ret_size) {
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return lease_parse_in_addrs_aux(option, len, ret, ret_size, 2);
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}
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2014-06-28 00:00:06 +02:00
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static int lease_parse_routes(const uint8_t *option, size_t len, struct sd_dhcp_route **routes,
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size_t *routes_size, size_t *routes_allocated) {
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struct in_addr addr;
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assert(option);
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assert(routes);
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assert(routes_size);
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assert(routes_allocated);
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if (!len)
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return 0;
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if (len % 8 != 0)
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return -EINVAL;
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if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8)))
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return -ENOMEM;
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while (len >= 8) {
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|
|
struct sd_dhcp_route *route = *routes + *routes_size;
|
2014-11-01 19:02:44 +01:00
|
|
|
int r;
|
2014-06-28 00:00:06 +02:00
|
|
|
|
2014-11-01 19:02:44 +01:00
|
|
|
r = in_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen);
|
|
|
|
if (r < 0) {
|
2014-06-28 00:00:06 +02:00
|
|
|
log_error("Failed to determine destination prefix length from class based IP, ignoring");
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
lease_parse_be32(option, 4, &addr.s_addr);
|
|
|
|
route->dst_addr = inet_makeaddr(inet_netof(addr), 0);
|
|
|
|
option += 4;
|
|
|
|
|
|
|
|
lease_parse_be32(option, 4, &route->gw_addr.s_addr);
|
|
|
|
option += 4;
|
|
|
|
|
|
|
|
len -= 8;
|
|
|
|
(*routes_size)++;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* parses RFC3442 Classless Static Route Option */
|
|
|
|
static int lease_parse_classless_routes(const uint8_t *option, size_t len, struct sd_dhcp_route **routes,
|
|
|
|
size_t *routes_size, size_t *routes_allocated) {
|
|
|
|
|
|
|
|
assert(option);
|
|
|
|
assert(routes);
|
|
|
|
assert(routes_size);
|
|
|
|
assert(routes_allocated);
|
|
|
|
|
|
|
|
/* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */
|
|
|
|
|
|
|
|
while (len > 0) {
|
|
|
|
uint8_t dst_octets;
|
|
|
|
struct sd_dhcp_route *route;
|
|
|
|
|
|
|
|
if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1))
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
route = *routes + *routes_size;
|
|
|
|
|
|
|
|
dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1);
|
|
|
|
route->dst_prefixlen = *option;
|
|
|
|
option++;
|
|
|
|
len--;
|
|
|
|
|
|
|
|
/* can't have more than 4 octets in IPv4 */
|
|
|
|
if (dst_octets > 4 || len < dst_octets)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
route->dst_addr.s_addr = 0;
|
|
|
|
memcpy(&route->dst_addr.s_addr, option, dst_octets);
|
|
|
|
option += dst_octets;
|
|
|
|
len -= dst_octets;
|
|
|
|
|
|
|
|
if (len < 4)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
lease_parse_be32(option, 4, &route->gw_addr.s_addr);
|
|
|
|
option += 4;
|
|
|
|
len -= 4;
|
|
|
|
|
|
|
|
(*routes_size)++;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-02-04 23:13:52 +01:00
|
|
|
int dhcp_lease_parse_options(uint8_t code, uint8_t len, const uint8_t *option,
|
|
|
|
void *user_data) {
|
|
|
|
sd_dhcp_lease *lease = user_data;
|
2014-05-20 16:40:59 +02:00
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(lease);
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
switch(code) {
|
|
|
|
|
2014-05-20 22:02:49 +02:00
|
|
|
case DHCP_OPTION_TIME_OFFSET:
|
|
|
|
lease_parse_s32(option, len, &lease->time_offset);
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_INTERFACE_MTU_AGING_TIMEOUT:
|
|
|
|
lease_parse_u32(option, len, &lease->mtu_aging_timeout, 0);
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
2014-02-04 23:13:52 +01:00
|
|
|
case DHCP_OPTION_IP_ADDRESS_LEASE_TIME:
|
2014-05-20 16:40:59 +02:00
|
|
|
lease_parse_u32(option, len, &lease->lifetime, 1);
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_SERVER_IDENTIFIER:
|
2014-05-20 16:40:59 +02:00
|
|
|
lease_parse_be32(option, len, &lease->server_address);
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_SUBNET_MASK:
|
2014-05-20 16:40:59 +02:00
|
|
|
lease_parse_be32(option, len, &lease->subnet_mask);
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
break;
|
|
|
|
|
2014-05-20 22:02:49 +02:00
|
|
|
case DHCP_OPTION_BROADCAST:
|
|
|
|
lease_parse_be32(option, len, &lease->broadcast);
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
2014-02-04 23:13:52 +01:00
|
|
|
case DHCP_OPTION_ROUTER:
|
2015-07-09 21:51:55 +02:00
|
|
|
if(len >= 4)
|
|
|
|
lease_parse_be32(option, 4, &lease->router);
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_DOMAIN_NAME_SERVER:
|
2014-05-20 16:40:59 +02:00
|
|
|
r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-04-29 12:17:27 +02:00
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_NTP_SERVER:
|
2014-05-20 16:40:59 +02:00
|
|
|
r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
break;
|
|
|
|
|
2014-05-20 22:02:49 +02:00
|
|
|
case DHCP_OPTION_POLICY_FILTER:
|
|
|
|
r = lease_parse_in_addrs_pairs(option, len, &lease->policy_filter, &lease->policy_filter_size);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_STATIC_ROUTE:
|
2014-06-28 00:00:06 +02:00
|
|
|
r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size,
|
|
|
|
&lease->static_route_allocated);
|
2014-05-20 22:02:49 +02:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
2014-02-04 23:13:52 +01:00
|
|
|
case DHCP_OPTION_INTERFACE_MTU:
|
2014-05-20 16:40:59 +02:00
|
|
|
lease_parse_u16(option, len, &lease->mtu, 68);
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
break;
|
|
|
|
|
2014-05-20 22:02:49 +02:00
|
|
|
case DHCP_OPTION_INTERFACE_MDR:
|
|
|
|
lease_parse_u16(option, len, &lease->mdr, 576);
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_INTERFACE_TTL:
|
|
|
|
lease_parse_u8(option, len, &lease->ttl, 1);
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_BOOT_FILE_SIZE:
|
|
|
|
lease_parse_u16(option, len, &lease->boot_file_size, 0);
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
2014-02-04 23:13:52 +01:00
|
|
|
case DHCP_OPTION_DOMAIN_NAME:
|
2014-08-15 01:04:53 +02:00
|
|
|
{
|
|
|
|
_cleanup_free_ char *domainname = NULL;
|
2015-01-28 17:47:37 +01:00
|
|
|
char *e;
|
2014-08-15 01:04:53 +02:00
|
|
|
|
|
|
|
r = lease_parse_string(option, len, &domainname);
|
2014-05-20 16:40:59 +02:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-02-04 23:13:52 +01:00
|
|
|
|
2015-01-28 17:47:37 +01:00
|
|
|
/* Chop off trailing dot of domain name that some DHCP
|
|
|
|
* servers send us back. Internally we want to store
|
|
|
|
* host names without trailing dots and
|
|
|
|
* host_name_is_valid() doesn't accept them. */
|
|
|
|
e = endswith(domainname, ".");
|
|
|
|
if (e)
|
|
|
|
*e = 0;
|
|
|
|
|
2015-06-03 01:30:42 +02:00
|
|
|
if (is_localhost(domainname))
|
2014-08-15 01:04:53 +02:00
|
|
|
break;
|
|
|
|
|
2015-06-03 01:30:42 +02:00
|
|
|
r = dns_name_is_valid(domainname);
|
|
|
|
if (r <= 0) {
|
|
|
|
if (r < 0)
|
|
|
|
log_error_errno(r, "Failed to validate domain name: %s: %m", domainname);
|
|
|
|
if (r == 0)
|
|
|
|
log_warning("Domain name is not valid, ignoring: %s", domainname);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2014-08-15 01:04:53 +02:00
|
|
|
free(lease->domainname);
|
|
|
|
lease->domainname = domainname;
|
|
|
|
domainname = NULL;
|
2014-02-04 23:13:52 +01:00
|
|
|
|
2014-08-15 01:04:53 +02:00
|
|
|
break;
|
|
|
|
}
|
2014-02-04 23:13:52 +01:00
|
|
|
case DHCP_OPTION_HOST_NAME:
|
2014-08-15 01:04:53 +02:00
|
|
|
{
|
|
|
|
_cleanup_free_ char *hostname = NULL;
|
2015-01-28 17:47:37 +01:00
|
|
|
char *e;
|
2014-08-15 01:04:53 +02:00
|
|
|
|
|
|
|
r = lease_parse_string(option, len, &hostname);
|
2014-05-20 16:40:59 +02:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-02-04 23:13:52 +01:00
|
|
|
|
2015-01-28 17:47:37 +01:00
|
|
|
e = endswith(hostname, ".");
|
|
|
|
if (e)
|
|
|
|
*e = 0;
|
|
|
|
|
2015-07-28 04:15:26 +02:00
|
|
|
if (!hostname_is_valid(hostname, false) || is_localhost(hostname))
|
2014-08-15 01:04:53 +02:00
|
|
|
break;
|
|
|
|
|
2015-07-28 04:15:26 +02:00
|
|
|
free_and_replace(&lease->hostname, hostname);
|
2014-08-15 01:04:53 +02:00
|
|
|
hostname = NULL;
|
2014-02-04 23:13:52 +01:00
|
|
|
|
2014-08-15 01:04:53 +02:00
|
|
|
break;
|
|
|
|
}
|
2014-03-03 15:43:02 +01:00
|
|
|
case DHCP_OPTION_ROOT_PATH:
|
2014-05-20 16:40:59 +02:00
|
|
|
r = lease_parse_string(option, len, &lease->root_path);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-03-03 15:43:02 +01:00
|
|
|
|
|
|
|
break;
|
|
|
|
|
2014-02-04 23:13:52 +01:00
|
|
|
case DHCP_OPTION_RENEWAL_T1_TIME:
|
2014-05-20 16:40:59 +02:00
|
|
|
lease_parse_u32(option, len, &lease->t1, 1);
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_REBINDING_T2_TIME:
|
2014-05-20 16:40:59 +02:00
|
|
|
lease_parse_u32(option, len, &lease->t2, 1);
|
2014-02-04 23:13:52 +01:00
|
|
|
|
2014-05-20 22:02:49 +02:00
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_ENABLE_IP_FORWARDING:
|
|
|
|
lease_parse_bool(option, len, &lease->ip_forward);
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case DHCP_OPTION_ENABLE_IP_FORWARDING_NL:
|
|
|
|
lease_parse_bool(option, len, &lease->ip_forward_non_local);
|
|
|
|
|
2014-02-04 23:13:52 +01:00
|
|
|
break;
|
2014-06-28 00:00:06 +02:00
|
|
|
|
|
|
|
case DHCP_OPTION_CLASSLESS_STATIC_ROUTE:
|
|
|
|
r = lease_parse_classless_routes(option, len, &lease->static_route, &lease->static_route_size,
|
|
|
|
&lease->static_route_allocated);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
break;
|
2015-07-09 18:04:01 +02:00
|
|
|
|
|
|
|
case DHCP_OPTION_VENDOR_SPECIFIC:
|
|
|
|
if (len >= 1) {
|
|
|
|
free(lease->vendor_specific);
|
|
|
|
lease->vendor_specific = memdup(option, len);
|
|
|
|
if (!lease->vendor_specific)
|
|
|
|
return -ENOMEM;
|
|
|
|
lease->vendor_specific_len = len;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
2015-08-01 05:02:22 +02:00
|
|
|
|
|
|
|
default:
|
|
|
|
if (code < DHCP_OPTION_PRIVATE_BASE || code > DHCP_OPTION_PRIVATE_LAST)
|
|
|
|
break;
|
|
|
|
|
|
|
|
r = dhcp_lease_insert_private_option(lease, code, option, len);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-02-04 23:13:52 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-08-01 05:02:22 +02:00
|
|
|
int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag,
|
|
|
|
const uint8_t *data, uint8_t len) {
|
|
|
|
struct sd_dhcp_raw_option *cur, *option;
|
|
|
|
|
|
|
|
LIST_FOREACH(options, cur, lease->private_options) {
|
|
|
|
if (tag < cur->tag)
|
|
|
|
break;
|
|
|
|
else if (tag == cur->tag) {
|
|
|
|
log_error("Ignoring duplicate option, tagged %d.", tag);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
option = new(struct sd_dhcp_raw_option, 1);
|
|
|
|
if (!option)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
option->tag = tag;
|
|
|
|
option->length = len;
|
|
|
|
option->data = memdup(data, len);
|
|
|
|
if (!option->data) {
|
|
|
|
free(option);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
LIST_INSERT_BEFORE(options, lease->private_options, cur, option);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-02-04 23:13:52 +01:00
|
|
|
int dhcp_lease_new(sd_dhcp_lease **ret) {
|
2014-04-11 05:45:46 +02:00
|
|
|
sd_dhcp_lease *lease;
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
lease = new0(sd_dhcp_lease, 1);
|
|
|
|
if (!lease)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2014-04-29 22:40:38 +02:00
|
|
|
lease->router = INADDR_ANY;
|
2014-02-04 23:13:52 +01:00
|
|
|
lease->n_ref = REFCNT_INIT;
|
2015-08-01 05:02:22 +02:00
|
|
|
LIST_HEAD_INIT(lease->private_options);
|
2014-02-04 23:13:52 +01:00
|
|
|
|
|
|
|
*ret = lease;
|
|
|
|
return 0;
|
|
|
|
}
|
2014-02-27 01:24:05 +01:00
|
|
|
|
2014-11-18 19:10:37 +01:00
|
|
|
int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
|
2014-02-27 01:24:05 +01:00
|
|
|
_cleanup_free_ char *temp_path = NULL;
|
|
|
|
_cleanup_fclose_ FILE *f = NULL;
|
2015-08-01 05:18:51 +02:00
|
|
|
struct sd_dhcp_raw_option *option;
|
2014-02-27 01:24:05 +01:00
|
|
|
struct in_addr address;
|
2014-07-17 01:39:46 +02:00
|
|
|
const struct in_addr *addresses;
|
2015-07-09 18:04:01 +02:00
|
|
|
const uint8_t *client_id, *data;
|
|
|
|
size_t client_id_len, data_len;
|
2014-02-27 01:24:05 +01:00
|
|
|
const char *string;
|
|
|
|
uint16_t mtu;
|
2014-06-28 00:00:06 +02:00
|
|
|
struct sd_dhcp_route *routes;
|
2014-02-27 01:24:05 +01:00
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(lease);
|
|
|
|
assert(lease_file);
|
|
|
|
|
|
|
|
r = fopen_temporary(lease_file, &f, &temp_path);
|
|
|
|
if (r < 0)
|
2015-07-29 20:31:07 +02:00
|
|
|
goto fail;
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
fchmod(fileno(f), 0644);
|
|
|
|
|
|
|
|
r = sd_dhcp_lease_get_address(lease, &address);
|
|
|
|
if (r < 0)
|
2015-07-29 20:31:07 +02:00
|
|
|
goto fail;
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
fprintf(f,
|
|
|
|
"# This is private data. Do not parse.\n"
|
2014-04-29 13:29:12 +02:00
|
|
|
"ADDRESS=%s\n", inet_ntoa(address));
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
r = sd_dhcp_lease_get_netmask(lease, &address);
|
|
|
|
if (r < 0)
|
2015-07-29 20:31:07 +02:00
|
|
|
goto fail;
|
2014-02-27 01:24:05 +01:00
|
|
|
|
2014-04-29 13:29:12 +02:00
|
|
|
fprintf(f, "NETMASK=%s\n", inet_ntoa(address));
|
2014-02-27 01:24:05 +01:00
|
|
|
|
2014-04-29 22:40:38 +02:00
|
|
|
r = sd_dhcp_lease_get_router(lease, &address);
|
|
|
|
if (r >= 0)
|
|
|
|
fprintf(f, "ROUTER=%s\n", inet_ntoa(address));
|
|
|
|
|
2014-03-03 16:46:10 +01:00
|
|
|
r = sd_dhcp_lease_get_server_identifier(lease, &address);
|
2014-04-29 13:29:12 +02:00
|
|
|
if (r >= 0)
|
|
|
|
fprintf(f, "SERVER_ADDRESS=%s\n",
|
|
|
|
inet_ntoa(address));
|
2014-03-03 16:46:10 +01:00
|
|
|
|
2014-03-03 17:13:59 +01:00
|
|
|
r = sd_dhcp_lease_get_next_server(lease, &address);
|
2014-04-29 13:29:12 +02:00
|
|
|
if (r >= 0)
|
|
|
|
fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address));
|
2014-03-03 17:13:59 +01:00
|
|
|
|
2014-02-27 01:24:05 +01:00
|
|
|
r = sd_dhcp_lease_get_mtu(lease, &mtu);
|
|
|
|
if (r >= 0)
|
|
|
|
fprintf(f, "MTU=%" PRIu16 "\n", mtu);
|
|
|
|
|
2014-07-23 13:48:18 +02:00
|
|
|
fputs("DNS=", f);
|
2014-07-17 01:39:46 +02:00
|
|
|
r = sd_dhcp_lease_get_dns(lease, &addresses);
|
2014-04-29 13:29:12 +02:00
|
|
|
if (r >= 0)
|
2014-07-23 13:48:18 +02:00
|
|
|
serialize_in_addrs(f, addresses, r);
|
|
|
|
fputs("\n", f);
|
2014-04-29 13:29:12 +02:00
|
|
|
|
2014-07-23 13:48:18 +02:00
|
|
|
fputs("NTP=", f);
|
2014-07-17 01:39:46 +02:00
|
|
|
r = sd_dhcp_lease_get_ntp(lease, &addresses);
|
2014-04-29 13:29:12 +02:00
|
|
|
if (r >= 0)
|
2014-07-23 13:48:18 +02:00
|
|
|
serialize_in_addrs(f, addresses, r);
|
|
|
|
fputs("\n", f);
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
r = sd_dhcp_lease_get_domainname(lease, &string);
|
|
|
|
if (r >= 0)
|
|
|
|
fprintf(f, "DOMAINNAME=%s\n", string);
|
|
|
|
|
|
|
|
r = sd_dhcp_lease_get_hostname(lease, &string);
|
|
|
|
if (r >= 0)
|
|
|
|
fprintf(f, "HOSTNAME=%s\n", string);
|
|
|
|
|
2014-03-03 15:43:02 +01:00
|
|
|
r = sd_dhcp_lease_get_root_path(lease, &string);
|
|
|
|
if (r >= 0)
|
|
|
|
fprintf(f, "ROOT_PATH=%s\n", string);
|
|
|
|
|
2014-07-17 01:39:46 +02:00
|
|
|
r = sd_dhcp_lease_get_routes(lease, &routes);
|
2014-06-28 00:00:06 +02:00
|
|
|
if (r >= 0)
|
2014-07-17 01:39:46 +02:00
|
|
|
serialize_dhcp_routes(f, "ROUTES", routes, r);
|
2014-06-28 00:00:06 +02:00
|
|
|
|
2014-11-19 00:13:12 +01:00
|
|
|
r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len);
|
|
|
|
if (r >= 0) {
|
|
|
|
_cleanup_free_ char *client_id_hex;
|
|
|
|
|
2015-05-21 23:30:37 +02:00
|
|
|
client_id_hex = hexmem(client_id, client_id_len);
|
2014-11-19 00:13:12 +01:00
|
|
|
if (!client_id_hex) {
|
|
|
|
r = -ENOMEM;
|
2015-07-29 20:31:07 +02:00
|
|
|
goto fail;
|
2014-11-19 00:13:12 +01:00
|
|
|
}
|
|
|
|
fprintf(f, "CLIENTID=%s\n", client_id_hex);
|
|
|
|
}
|
|
|
|
|
2015-07-09 18:04:01 +02:00
|
|
|
r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len);
|
|
|
|
if (r >= 0) {
|
|
|
|
_cleanup_free_ char *option_hex = NULL;
|
|
|
|
|
|
|
|
option_hex = hexmem(data, data_len);
|
|
|
|
if (!option_hex) {
|
|
|
|
r = -ENOMEM;
|
2015-07-29 20:31:07 +02:00
|
|
|
goto fail;
|
2015-07-09 18:04:01 +02:00
|
|
|
}
|
|
|
|
fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex);
|
|
|
|
}
|
|
|
|
|
2015-08-01 05:18:51 +02:00
|
|
|
LIST_FOREACH(options, option, lease->private_options) {
|
2015-08-05 21:25:12 +02:00
|
|
|
char key[strlen("OPTION_000")+1];
|
2015-08-01 05:18:51 +02:00
|
|
|
snprintf(key, sizeof(key), "OPTION_%"PRIu8, option->tag);
|
|
|
|
r = serialize_dhcp_option(f, key, option->data, option->length);
|
|
|
|
if (r < 0)
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
2015-07-29 20:31:07 +02:00
|
|
|
r = fflush_and_check(f);
|
|
|
|
if (r < 0)
|
|
|
|
goto fail;
|
2014-02-27 01:24:05 +01:00
|
|
|
|
2015-07-29 20:31:07 +02:00
|
|
|
if (rename(temp_path, lease_file) < 0) {
|
2014-02-27 01:24:05 +01:00
|
|
|
r = -errno;
|
2015-07-29 20:31:07 +02:00
|
|
|
goto fail;
|
2014-02-27 01:24:05 +01:00
|
|
|
}
|
|
|
|
|
2015-07-29 20:31:07 +02:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
if (temp_path)
|
|
|
|
(void) unlink(temp_path);
|
2014-02-27 01:24:05 +01:00
|
|
|
|
2015-07-29 20:31:07 +02:00
|
|
|
return log_error_errno(r, "Failed to save lease data %s: %m", lease_file);
|
2014-02-27 01:24:05 +01:00
|
|
|
}
|
|
|
|
|
2014-11-18 19:10:37 +01:00
|
|
|
int sd_dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) {
|
2014-02-27 01:24:05 +01:00
|
|
|
_cleanup_dhcp_lease_unref_ sd_dhcp_lease *lease = NULL;
|
|
|
|
_cleanup_free_ char *address = NULL, *router = NULL, *netmask = NULL,
|
2014-03-03 17:13:59 +01:00
|
|
|
*server_address = NULL, *next_server = NULL,
|
2014-11-19 00:13:12 +01:00
|
|
|
*dns = NULL, *ntp = NULL, *mtu = NULL,
|
2015-07-09 18:04:01 +02:00
|
|
|
*routes = NULL, *client_id_hex = NULL,
|
2015-08-01 05:18:51 +02:00
|
|
|
*vendor_specific_hex = NULL,
|
|
|
|
*options[DHCP_OPTION_PRIVATE_LAST -
|
|
|
|
DHCP_OPTION_PRIVATE_BASE + 1] = { NULL };
|
2014-02-27 01:24:05 +01:00
|
|
|
struct in_addr addr;
|
2015-08-01 05:18:51 +02:00
|
|
|
int r, i;
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
assert(lease_file);
|
|
|
|
assert(ret);
|
|
|
|
|
|
|
|
r = dhcp_lease_new(&lease);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
r = parse_env_file(lease_file, NEWLINE,
|
|
|
|
"ADDRESS", &address,
|
|
|
|
"ROUTER", &router,
|
|
|
|
"NETMASK", &netmask,
|
2014-03-03 16:46:10 +01:00
|
|
|
"SERVER_IDENTIFIER", &server_address,
|
2014-03-03 17:13:59 +01:00
|
|
|
"NEXT_SERVER", &next_server,
|
2014-04-29 13:29:12 +02:00
|
|
|
"DNS", &dns,
|
|
|
|
"NTP", &ntp,
|
2014-02-27 01:24:05 +01:00
|
|
|
"MTU", &mtu,
|
|
|
|
"DOMAINNAME", &lease->domainname,
|
|
|
|
"HOSTNAME", &lease->hostname,
|
2014-03-03 15:43:02 +01:00
|
|
|
"ROOT_PATH", &lease->root_path,
|
2014-06-28 00:00:06 +02:00
|
|
|
"ROUTES", &routes,
|
2014-11-19 00:13:12 +01:00
|
|
|
"CLIENTID", &client_id_hex,
|
2015-07-09 18:04:01 +02:00
|
|
|
"VENDOR_SPECIFIC", &vendor_specific_hex,
|
2015-08-01 05:18:51 +02:00
|
|
|
"OPTION_224", &options[0],
|
|
|
|
"OPTION_225", &options[1],
|
|
|
|
"OPTION_226", &options[2],
|
|
|
|
"OPTION_227", &options[3],
|
|
|
|
"OPTION_228", &options[4],
|
|
|
|
"OPTION_229", &options[5],
|
|
|
|
"OPTION_230", &options[6],
|
|
|
|
"OPTION_231", &options[7],
|
|
|
|
"OPTION_232", &options[8],
|
|
|
|
"OPTION_233", &options[9],
|
|
|
|
"OPTION_234", &options[10],
|
|
|
|
"OPTION_235", &options[11],
|
|
|
|
"OPTION_236", &options[12],
|
|
|
|
"OPTION_237", &options[13],
|
|
|
|
"OPTION_238", &options[14],
|
|
|
|
"OPTION_239", &options[15],
|
|
|
|
"OPTION_240", &options[16],
|
|
|
|
"OPTION_241", &options[17],
|
|
|
|
"OPTION_242", &options[18],
|
|
|
|
"OPTION_243", &options[19],
|
|
|
|
"OPTION_244", &options[20],
|
|
|
|
"OPTION_245", &options[21],
|
|
|
|
"OPTION_246", &options[22],
|
|
|
|
"OPTION_247", &options[23],
|
|
|
|
"OPTION_248", &options[24],
|
|
|
|
"OPTION_249", &options[25],
|
|
|
|
"OPTION_250", &options[26],
|
|
|
|
"OPTION_251", &options[27],
|
|
|
|
"OPTION_252", &options[28],
|
|
|
|
"OPTION_253", &options[29],
|
|
|
|
"OPTION_254", &options[30],
|
2014-02-27 01:24:05 +01:00
|
|
|
NULL);
|
|
|
|
if (r < 0) {
|
|
|
|
if (r == -ENOENT)
|
|
|
|
return 0;
|
|
|
|
|
2014-11-28 18:23:20 +01:00
|
|
|
return log_error_errno(r, "Failed to read %s: %m", lease_file);
|
2014-02-27 01:24:05 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
r = inet_pton(AF_INET, address, &addr);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
lease->address = addr.s_addr;
|
|
|
|
|
2014-04-29 22:40:38 +02:00
|
|
|
if (router) {
|
|
|
|
r = inet_pton(AF_INET, router, &addr);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-02-27 01:24:05 +01:00
|
|
|
|
2014-04-29 22:40:38 +02:00
|
|
|
lease->router = addr.s_addr;
|
|
|
|
}
|
2014-02-27 01:24:05 +01:00
|
|
|
|
|
|
|
r = inet_pton(AF_INET, netmask, &addr);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
lease->subnet_mask = addr.s_addr;
|
|
|
|
|
2014-03-03 16:46:10 +01:00
|
|
|
if (server_address) {
|
|
|
|
r = inet_pton(AF_INET, server_address, &addr);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
lease->server_address = addr.s_addr;
|
|
|
|
}
|
|
|
|
|
2014-03-03 17:13:59 +01:00
|
|
|
if (next_server) {
|
|
|
|
r = inet_pton(AF_INET, next_server, &addr);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
lease->next_server = addr.s_addr;
|
|
|
|
}
|
|
|
|
|
2014-04-29 13:29:12 +02:00
|
|
|
if (dns) {
|
2014-07-17 01:39:46 +02:00
|
|
|
r = deserialize_in_addrs(&lease->dns, dns);
|
2014-04-29 13:29:12 +02:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-07-17 01:39:46 +02:00
|
|
|
|
|
|
|
lease->dns_size = r;
|
2014-04-29 13:29:12 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
if (ntp) {
|
2014-07-17 01:39:46 +02:00
|
|
|
r = deserialize_in_addrs(&lease->ntp, ntp);
|
2014-04-29 13:29:12 +02:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-07-17 01:39:46 +02:00
|
|
|
|
|
|
|
lease->ntp_size = r;
|
2014-04-29 13:29:12 +02:00
|
|
|
}
|
|
|
|
|
2014-02-27 01:24:05 +01:00
|
|
|
if (mtu) {
|
|
|
|
uint16_t u;
|
|
|
|
if (sscanf(mtu, "%" SCNu16, &u) > 0)
|
|
|
|
lease->mtu = u;
|
|
|
|
}
|
|
|
|
|
2014-06-28 00:00:06 +02:00
|
|
|
if (routes) {
|
|
|
|
r = deserialize_dhcp_routes(&lease->static_route, &lease->static_route_size,
|
|
|
|
&lease->static_route_allocated, routes);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2014-11-19 00:13:12 +01:00
|
|
|
if (client_id_hex) {
|
2015-08-01 06:48:47 +02:00
|
|
|
r = deserialize_dhcp_option(&lease->client_id, &lease->client_id_len, client_id_hex);
|
2015-07-11 19:14:52 +02:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-11-19 00:13:12 +01:00
|
|
|
}
|
|
|
|
|
2015-07-09 18:04:01 +02:00
|
|
|
if (vendor_specific_hex) {
|
2015-08-01 06:48:47 +02:00
|
|
|
r = deserialize_dhcp_option(&lease->vendor_specific, &lease->vendor_specific_len, vendor_specific_hex);
|
2015-07-09 18:04:01 +02:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2015-08-01 05:18:51 +02:00
|
|
|
for (i = 0; i <= DHCP_OPTION_PRIVATE_LAST - DHCP_OPTION_PRIVATE_BASE; i++) {
|
|
|
|
uint8_t *data;
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
if (!options[i])
|
|
|
|
continue;
|
|
|
|
|
|
|
|
r = deserialize_dhcp_option(&data, &len, options[i]);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
r = dhcp_lease_insert_private_option(lease, DHCP_OPTION_PRIVATE_BASE + i, data, len);
|
2015-08-06 08:53:24 +02:00
|
|
|
if (r < 0) {
|
|
|
|
free(data);
|
2015-08-01 05:18:51 +02:00
|
|
|
return r;
|
2015-08-06 08:53:24 +02:00
|
|
|
}
|
2015-08-01 05:18:51 +02:00
|
|
|
}
|
|
|
|
|
2014-02-27 01:24:05 +01:00
|
|
|
*ret = lease;
|
|
|
|
lease = NULL;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2014-03-19 16:05:44 +01:00
|
|
|
|
|
|
|
int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) {
|
2014-10-27 17:38:03 +01:00
|
|
|
struct in_addr address;
|
|
|
|
struct in_addr mask;
|
|
|
|
int r;
|
2014-03-19 16:05:44 +01:00
|
|
|
|
|
|
|
assert(lease);
|
|
|
|
|
2014-10-27 17:38:03 +01:00
|
|
|
address.s_addr = lease->address;
|
2014-03-19 16:05:44 +01:00
|
|
|
|
|
|
|
/* fall back to the default subnet masks based on address class */
|
2014-10-27 17:38:03 +01:00
|
|
|
r = in_addr_default_subnet_mask(&address, &mask);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
2014-03-19 16:05:44 +01:00
|
|
|
|
2014-10-27 17:38:03 +01:00
|
|
|
lease->subnet_mask = mask.s_addr;
|
2014-03-19 16:05:44 +01:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2014-11-19 00:13:12 +01:00
|
|
|
|
|
|
|
int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const uint8_t **client_id,
|
|
|
|
size_t *client_id_len) {
|
|
|
|
assert_return(lease, -EINVAL);
|
|
|
|
assert_return(client_id, -EINVAL);
|
|
|
|
assert_return(client_id_len, -EINVAL);
|
|
|
|
|
|
|
|
*client_id = lease->client_id;
|
|
|
|
*client_id_len = lease->client_id_len;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const uint8_t *client_id,
|
|
|
|
size_t client_id_len) {
|
|
|
|
assert_return(lease, -EINVAL);
|
|
|
|
assert_return((!client_id && !client_id_len) ||
|
|
|
|
(client_id && client_id_len), -EINVAL);
|
|
|
|
|
|
|
|
free (lease->client_id);
|
|
|
|
lease->client_id = NULL;
|
|
|
|
lease->client_id_len = 0;
|
|
|
|
|
|
|
|
if (client_id) {
|
|
|
|
lease->client_id = memdup (client_id, client_id_len);
|
|
|
|
lease->client_id_len = client_id_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|