+++ /dev/null
-/***
- This file is part of systemd.
-
- Copyright (C) 2013 Intel Corporation. All rights reserved.
- Copyright (C) 2014 Tom Gundersen
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <stdio.h>
-#include <net/ethernet.h>
-#include <sys/param.h>
-
-#include "util.h"
-#include "list.h"
-
-#include "dhcp-protocol.h"
-#include "dhcp-internal.h"
-#include "dhcp-lease.h"
-#include "sd-dhcp-client.h"
-
-int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- addr->s_addr = lease->address;
-
- return 0;
-}
-
-int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) {
- assert_return(lease, -EINVAL);
- assert_return(mtu, -EINVAL);
-
- if (lease->mtu)
- *mtu = lease->mtu;
- else
- return -ENOENT;
-
- return 0;
-}
-
-int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, struct in_addr **addr, size_t *addr_size) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
- assert_return(addr_size, -EINVAL);
-
- if (lease->dns_size) {
- *addr_size = lease->dns_size;
- *addr = lease->dns;
- } else
- return -ENOENT;
-
- return 0;
-}
-
-int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) {
- assert_return(lease, -EINVAL);
- assert_return(domainname, -EINVAL);
-
- if (lease->domainname)
- *domainname = lease->domainname;
- else
- return -ENOENT;
-
- return 0;
-}
-
-int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) {
- assert_return(lease, -EINVAL);
- assert_return(hostname, -EINVAL);
-
- if (lease->hostname)
- *hostname = lease->hostname;
- else
- return -ENOENT;
-
- return 0;
-}
-
-int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- addr->s_addr = lease->router;
-
- return 0;
-}
-
-int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- addr->s_addr = lease->subnet_mask;
-
- return 0;
-}
-
-sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) {
- if (lease)
- assert_se(REFCNT_INC(lease->n_ref) >= 2);
-
- return lease;
-}
-
-sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) {
- if (lease && REFCNT_DEC(lease->n_ref) <= 0) {
- free(lease->hostname);
- free(lease->domainname);
- free(lease->dns);
- free(lease);
- }
-
- return NULL;
-}
-
-int dhcp_lease_parse_options(uint8_t code, uint8_t len, const uint8_t *option,
- void *user_data) {
- sd_dhcp_lease *lease = user_data;
- be32_t val;
-
- switch(code) {
-
- case DHCP_OPTION_IP_ADDRESS_LEASE_TIME:
- if (len == 4) {
- memcpy(&val, option, 4);
- lease->lifetime = be32toh(val);
- }
-
- break;
-
- case DHCP_OPTION_SERVER_IDENTIFIER:
- if (len >= 4)
- memcpy(&lease->server_address, option, 4);
-
- break;
-
- case DHCP_OPTION_SUBNET_MASK:
- if (len >= 4)
- memcpy(&lease->subnet_mask, option, 4);
-
- break;
-
- case DHCP_OPTION_ROUTER:
- if (len >= 4)
- memcpy(&lease->router, option, 4);
-
- break;
-
- case DHCP_OPTION_DOMAIN_NAME_SERVER:
- if (len && !(len % 4)) {
- unsigned i;
-
- lease->dns_size = len / 4;
-
- free(lease->dns);
- lease->dns = new0(struct in_addr, lease->dns_size);
- if (!lease->dns)
- return -ENOMEM;
-
- for (i = 0; i < lease->dns_size; i++) {
- memcpy(&lease->dns[i].s_addr, option + 4 * i, 4);
- }
- }
-
- break;
-
- case DHCP_OPTION_INTERFACE_MTU:
- if (len >= 2) {
- be16_t mtu;
-
- memcpy(&mtu, option, 2);
- lease->mtu = be16toh(mtu);
-
- if (lease->mtu < 68)
- lease->mtu = 0;
- }
-
- break;
-
- case DHCP_OPTION_DOMAIN_NAME:
- if (len >= 1) {
- free(lease->domainname);
- lease->domainname = strndup((const char *)option, len);
- }
-
- break;
-
- case DHCP_OPTION_HOST_NAME:
- if (len >= 1) {
- free(lease->hostname);
- lease->hostname = strndup((const char *)option, len);
- }
-
- break;
-
- case DHCP_OPTION_RENEWAL_T1_TIME:
- if (len == 4) {
- memcpy(&val, option, 4);
- lease->t1 = be32toh(val);
- }
-
- break;
-
- case DHCP_OPTION_REBINDING_T2_TIME:
- if (len == 4) {
- memcpy(&val, option, 4);
- lease->t2 = be32toh(val);
- }
-
- break;
- }
-
- return 0;
-}
-
-int dhcp_lease_new(sd_dhcp_lease **ret) {
- _cleanup_dhcp_lease_unref_ sd_dhcp_lease *lease = NULL;
-
- lease = new0(sd_dhcp_lease, 1);
- if (!lease)
- return -ENOMEM;
-
- lease->n_ref = REFCNT_INIT;
-
- *ret = lease;
- lease = NULL;
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff