--- /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