--- /dev/null
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright (C) 2014 Red Hat, Inc.
+ */
+
+#include <config.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <gio/gio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <ctype.h>
+#include <net/if_arp.h>
+
+#include "nm-dhcp-systemd.h"
+#include "nm-utils.h"
+#include "nm-logging.h"
+#include "nm-dhcp-utils.h"
+#include "NetworkManagerUtils.h"
+
+#include "nm-sd-adapt.h"
+
+#include "sd-dhcp-client.h"
+#include "sd-dhcp6-client.h"
+#include "dhcp-protocol.h"
+#include "dhcp-lease-internal.h"
+#include "dhcp6-protocol.h"
+#include "dhcp6-lease-internal.h"
+
+G_DEFINE_TYPE (NMDhcpSystemd, nm_dhcp_systemd, NM_TYPE_DHCP_CLIENT)
+
+#define NM_DHCP_SYSTEMD_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_DHCP_SYSTEMD, NMDhcpSystemdPrivate))
+
+typedef struct {
+ struct sd_dhcp_client *client4;
+ struct sd_dhcp6_client *client6;
+ char *lease_file;
+
+ guint timeout_id;
+ guint request_count;
+
+ gboolean privacy;
+} NMDhcpSystemdPrivate;
+
+/************************************************************/
+
+#define DHCP_OPTION_NIS_DOMAIN 40
+#define DHCP_OPTION_NIS_SERVERS 41
+#define DHCP_OPTION_DOMAIN_SEARCH 119
+#define DHCP_OPTION_RFC3442_ROUTES 121
+#define DHCP_OPTION_MS_ROUTES 249
+#define DHCP_OPTION_WPAD 252
+
+/* Internal values */
+#define DHCP_OPTION_IP_ADDRESS 1024
+#define DHCP_OPTION_EXPIRY 1025
+#define DHCP6_OPTION_IP_ADDRESS 1026
+#define DHCP6_OPTION_PREFIXLEN 1027
+#define DHCP6_OPTION_PREFERRED_LIFE 1028
+#define DHCP6_OPTION_MAX_LIFE 1029
+#define DHCP6_OPTION_STARTS 1030
+#define DHCP6_OPTION_LIFE_STARTS 1031
+#define DHCP6_OPTION_RENEW 1032
+#define DHCP6_OPTION_REBIND 1033
+#define DHCP6_OPTION_IAID 1034
+
+typedef struct {
+ guint num;
+ const char *name;
+ gboolean include;
+} ReqOption;
+
+#define REQPREFIX "requested_"
+
+static const ReqOption dhcp4_requests[] = {
+ { DHCP_OPTION_SUBNET_MASK, REQPREFIX "subnet_mask", TRUE },
+ { DHCP_OPTION_TIME_OFFSET, REQPREFIX "time_offset", TRUE },
+ { DHCP_OPTION_ROUTER, REQPREFIX "routers", TRUE },
+ { DHCP_OPTION_DOMAIN_NAME_SERVER, REQPREFIX "domain_name_servers", TRUE },
+ { DHCP_OPTION_HOST_NAME, REQPREFIX "host_name", TRUE },
+ { DHCP_OPTION_DOMAIN_NAME, REQPREFIX "domain_name", TRUE },
+ { DHCP_OPTION_INTERFACE_MTU, REQPREFIX "interface_mtu", TRUE },
+ { DHCP_OPTION_BROADCAST, REQPREFIX "broadcast_address", TRUE },
+ { DHCP_OPTION_STATIC_ROUTE, REQPREFIX "static_routes", TRUE },
+ { DHCP_OPTION_NIS_DOMAIN, REQPREFIX "nis_domain", TRUE },
+ { DHCP_OPTION_NIS_SERVERS, REQPREFIX "nis_servers", TRUE },
+ { DHCP_OPTION_NTP_SERVER, REQPREFIX "ntp_servers", TRUE },
+ { DHCP_OPTION_SERVER_IDENTIFIER, REQPREFIX "dhcp_server_identifier", TRUE },
+ { DHCP_OPTION_DOMAIN_SEARCH, REQPREFIX "domain_search", TRUE },
+ { DHCP_OPTION_CLASSLESS_STATIC_ROUTE, REQPREFIX "rfc3442_classless_static_routes", TRUE },
+ { DHCP_OPTION_MS_ROUTES, REQPREFIX "ms_classless_static_routes", TRUE },
+ { DHCP_OPTION_WPAD, REQPREFIX "wpad", TRUE },
+
+ /* Internal values */
+ { DHCP_OPTION_IP_ADDRESS_LEASE_TIME, REQPREFIX "expiry", FALSE },
+ { DHCP_OPTION_CLIENT_IDENTIFIER, REQPREFIX "dhcp_client_identifier", FALSE },
+ { DHCP_OPTION_IP_ADDRESS, REQPREFIX "ip_address", FALSE },
+ { 0, NULL, FALSE }
+};
+
+static const ReqOption dhcp6_requests[] = {
+ { DHCP6_OPTION_CLIENTID, REQPREFIX "dhcp6_client_id", TRUE },
+
+ /* Don't request server ID by default; some servers don't reply to
+ * Information Requests that request the Server ID.
+ */
+ { DHCP6_OPTION_SERVERID, REQPREFIX "dhcp6_server_id", FALSE },
+
+ { DHCP6_OPTION_DNS_SERVERS, REQPREFIX "dhcp6_name_servers", TRUE },
+ { DHCP6_OPTION_DOMAIN_LIST, REQPREFIX "dhcp6_domain_search", TRUE },
+ { DHCP6_OPTION_SNTP_SERVERS, REQPREFIX "dhcp6_sntp_servers", TRUE },
+
+ /* Internal values */
+ { DHCP6_OPTION_IP_ADDRESS, REQPREFIX "ip6_address", FALSE },
+ { DHCP6_OPTION_PREFIXLEN, REQPREFIX "ip6_prefixlen", FALSE },
+ { DHCP6_OPTION_PREFERRED_LIFE, REQPREFIX "preferred_life", FALSE },
+ { DHCP6_OPTION_MAX_LIFE, REQPREFIX "max_life", FALSE },
+ { DHCP6_OPTION_STARTS, REQPREFIX "starts", FALSE },
+ { DHCP6_OPTION_LIFE_STARTS, REQPREFIX "life_starts", FALSE },
+ { DHCP6_OPTION_RENEW, REQPREFIX "renew", FALSE },
+ { DHCP6_OPTION_REBIND, REQPREFIX "rebind", FALSE },
+ { DHCP6_OPTION_IAID, REQPREFIX "iaid", FALSE },
+ { 0, NULL, FALSE }
+};
+
+static void
+take_option (GHashTable *options,
+ const ReqOption *requests,
+ guint option,
+ char *value)
+{
+ guint i;
+
+ g_return_if_fail (value != NULL);
+
+ for (i = 0; requests[i].name; i++) {
+ if (requests[i].num == option) {
+ g_hash_table_insert (options,
+ (gpointer) (requests[i].name + STRLEN (REQPREFIX)),
+ value);
+ break;
+ }
+ }
+ /* Option should always be found */
+ g_assert (requests[i].name);
+}
+
+static void
+add_option (GHashTable *options, const ReqOption *requests, guint option, const char *value)
+{
+ if (options)
+ take_option (options, requests, option, g_strdup (value));
+}
+
+static void
+add_option_u32 (GHashTable *options, const ReqOption *requests, guint option, guint32 value)
+{
+ if (options)
+ take_option (options, requests, option, g_strdup_printf ("%u", value));
+}
+
+static void
+add_requests_to_options (GHashTable *options, const ReqOption *requests)
+{
+ guint i;
+
+ for (i = 0; options && requests[i].name; i++) {
+ if (requests[i].include)
+ g_hash_table_insert (options, (gpointer) requests[i].name, g_strdup ("1"));
+ }
+}
+
+#define LOG_LEASE(domain, ...) \
+G_STMT_START { \
+ if (log_lease) { \
+ nm_log (LOGL_INFO, (domain), __VA_ARGS__); \
+ } \
+} G_STMT_END
+
+static NMIP4Config *
+lease_to_ip4_config (sd_dhcp_lease *lease,
+ GHashTable *options,
+ guint32 default_priority,
+ gboolean log_lease,
+ GError **error)
+{
+ NMIP4Config *ip4_config = NULL;
+ struct in_addr tmp_addr;
+ const struct in_addr *addr_list;
+ char buf[INET_ADDRSTRLEN];
+ const char *str;
+ guint32 lifetime = 0, plen = 0, i;
+ NMPlatformIP4Address address;
+ GString *l;
+ struct sd_dhcp_route *routes;
+ guint16 mtu;
+ int r, num;
+ gint64 end_time;
+
+ r = sd_dhcp_lease_get_address (lease, &tmp_addr);
+ if (r < 0) {
+ g_set_error_literal (error, NM_MANAGER_ERROR, NM_MANAGER_ERROR_FAILED,
+ "failed to read address from lease");
+ return NULL;
+ }
+
+ ip4_config = nm_ip4_config_new ();
+
+ /* Address */
+ memset (&address, 0, sizeof (address));
+ address.address = tmp_addr.s_addr;
+ str = nm_utils_inet4_ntop (tmp_addr.s_addr, NULL);
+ LOG_LEASE (LOGD_DHCP4, " address %s", str);
+ add_option (options, dhcp4_requests, DHCP_OPTION_IP_ADDRESS, str);
+
+ /* Prefix/netmask */
+ r = sd_dhcp_lease_get_netmask (lease, &tmp_addr);
+ if (r < 0) {
+ /* Get default netmask for the IP according to appropriate class. */
+ plen = nm_utils_ip4_get_default_prefix (address.address);
+ LOG_LEASE (LOGD_DHCP4, " plen %d (default)", plen);
+ } else {
+ plen = nm_utils_ip4_netmask_to_prefix (tmp_addr.s_addr);
+ LOG_LEASE (LOGD_DHCP4, " plen %d", plen);
+ }
+ address.plen = plen;
+ tmp_addr.s_addr = nm_utils_ip4_prefix_to_netmask (plen);
+ add_option (options,
+ dhcp4_requests,
+ DHCP_OPTION_SUBNET_MASK,
+ nm_utils_inet4_ntop (tmp_addr.s_addr, NULL));
+
+ /* Lease time */
+ r = sd_dhcp_lease_get_lifetime (lease, &lifetime);
+ if (r < 0)
+ lifetime = 3600; /* one hour */
+ address.timestamp = nm_utils_get_monotonic_timestamp_s ();
+ address.lifetime = address.preferred = lifetime;
+ end_time = (gint64) time (NULL) + lifetime;
+ add_option_u32 (options,
+ dhcp4_requests,
+ DHCP_OPTION_IP_ADDRESS_LEASE_TIME,
+ (guint) CLAMP (end_time, 0, G_MAXUINT32 - 1));
+
+ address.source = NM_IP_CONFIG_SOURCE_DHCP;
+ nm_ip4_config_add_address (ip4_config, &address);
+
+ /* Gateway */
+ r = sd_dhcp_lease_get_router (lease, &tmp_addr);
+ if (r == 0) {
+ nm_ip4_config_set_gateway (ip4_config, tmp_addr.s_addr);
+ str = nm_utils_inet4_ntop (tmp_addr.s_addr, NULL);
+ LOG_LEASE (LOGD_DHCP4, " gateway %s", str);
+ add_option (options, dhcp4_requests, DHCP_OPTION_ROUTER, str);
+ }
+
+ /* DNS Servers */
+ num = sd_dhcp_lease_get_dns (lease, &addr_list);
+ if (num > 0) {
+ l = g_string_sized_new (30);
+ for (i = 0; i < num; i++) {
+ if (addr_list[i].s_addr) {
+ nm_ip4_config_add_nameserver (ip4_config, addr_list[i].s_addr);
+ str = nm_utils_inet4_ntop (addr_list[i].s_addr, NULL);
+ LOG_LEASE (LOGD_DHCP4, " nameserver '%s'", str);
+ g_string_append_printf (l, "%s%s", l->len ? " " : "", str);
+ }
+ }
+ if (l->len)
+ add_option (options, dhcp4_requests, DHCP_OPTION_DOMAIN_NAME_SERVER, l->str);
+ g_string_free (l, TRUE);
+ }
+
+ /* Domain Name */
+ r = sd_dhcp_lease_get_domainname (lease, &str);
+ if (r == 0) {
+ /* Multiple domains sometimes stuffed into the option */
+ char **domains = g_strsplit (str, " ", 0);
+ char **s;
+
+ for (s = domains; *s; s++) {
+ LOG_LEASE (LOGD_DHCP4, " domain name '%s'", *s);
+ nm_ip4_config_add_domain (ip4_config, *s);
+ }
+ g_strfreev (domains);
+ add_option (options, dhcp4_requests, DHCP_OPTION_DOMAIN_NAME, str);
+ }
+
+ /* Hostname */
+ r = sd_dhcp_lease_get_hostname (lease, &str);
+ if (r == 0) {
+ LOG_LEASE (LOGD_DHCP4, " hostname '%s'", str);
+ add_option (options, dhcp4_requests, DHCP_OPTION_HOST_NAME, str);
+ }
+
+ /* Routes */
+ num = sd_dhcp_lease_get_routes (lease, &routes);
+ if (num > 0) {
+ l = g_string_sized_new (30);
+ for (i = 0; i < num; i++) {
+ NMPlatformIP4Route route;
+ const char *gw_str;
+
+ memset (&route, 0, sizeof (route));
+ route.network = routes[i].dst_addr.s_addr;
+ route.plen = routes[i].dst_prefixlen;
+ route.gateway = routes[i].gw_addr.s_addr;
+ route.source = NM_IP_CONFIG_SOURCE_DHCP;
+ route.metric = default_priority;
+ nm_ip4_config_add_route (ip4_config, &route);
+
+ str = nm_utils_inet4_ntop (route.network, buf);
+ gw_str = nm_utils_inet4_ntop (route.gateway, NULL);
+ LOG_LEASE (LOGD_DHCP4, " static route %s/%d gw %s", str, route.plen, gw_str);
+
+ g_string_append_printf (l, "%s%s/%d %s", l->len ? " " : "", str, route.plen, gw_str);
+ }
+ add_option (options, dhcp4_requests, DHCP_OPTION_RFC3442_ROUTES, l->str);
+ g_string_free (l, TRUE);
+ }
+
+ /* MTU */
+ r = sd_dhcp_lease_get_mtu (lease, &mtu);
+ if (r == 0 && mtu) {
+ nm_ip4_config_set_mtu (ip4_config, mtu, NM_IP_CONFIG_SOURCE_DHCP);
+ add_option_u32 (options, dhcp4_requests, DHCP_OPTION_INTERFACE_MTU, mtu);
+ LOG_LEASE (LOGD_DHCP4, " mtu %u", mtu);
+ }
+
+ /* NTP servers */
+ num = sd_dhcp_lease_get_ntp(lease, &addr_list);
+ if (num > 0) {
+ l = g_string_sized_new (30);
+ for (i = 0; i < num; i++) {
+ str = nm_utils_inet4_ntop (addr_list[i].s_addr, buf);
+ g_string_append_printf (l, "%s%s", l->len ? " " : "", str);
+ }
+ add_option (options, dhcp4_requests, DHCP_OPTION_NTP_SERVER, l->str);
+ g_string_free (l, TRUE);
+ }
+
+ return ip4_config;
+}
+
+/************************************************************/
+
+static char *
+get_leasefile_path (const char *iface, const char *uuid, gboolean ipv6)
+{
+ return g_strdup_printf (NMSTATEDIR "/internal%s-%s-%s.lease",
+ ipv6 ? "6" : "",
+ uuid,
+ iface);
+}
+
+GSList *
+nm_dhcp_systemd_get_lease_ip_configs (const char *iface,
+ const char *uuid,
+ gboolean ipv6)
+{
+ GSList *leases = NULL;
+ gs_free char *path = NULL;
+ sd_dhcp_lease *lease = NULL;
+ NMIP4Config *ip4_config;
+ int r;
+
+ if (ipv6)
+ return NULL;
+
+ path = get_leasefile_path (iface, uuid, FALSE);
+ r = sd_dhcp_lease_load (path, &lease);
+ if (r == 0) {
+ ip4_config = lease_to_ip4_config (lease, NULL, 0, FALSE, NULL);
+ if (ip4_config)
+ leases = g_slist_append (leases, ip4_config);
+ }
+
+ return leases;
+}
+
+/************************************************************/
+
+static void
+bound4_handle (NMDhcpSystemd *self)
+{
+ NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
+ const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
+ sd_dhcp_lease *lease;
+ NMIP4Config *ip4_config;
+ GHashTable *options;
+ GError *error = NULL;
+ int r;
+
+ nm_log_dbg (LOGD_DHCP4, "(%s): lease available", iface);
+
+ r = sd_dhcp_client_get_lease (priv->client4, &lease);
+ if (r < 0 || !lease) {
+ nm_log_warn (LOGD_DHCP4, "(%s): no lease!", iface);
+ nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
+ return;
+ }
+
+ options = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_free);
+ ip4_config = lease_to_ip4_config (lease,
+ options,
+ nm_dhcp_client_get_priority (NM_DHCP_CLIENT (self)),
+ TRUE,
+ &error);
+ if (ip4_config) {
+ add_requests_to_options (options, dhcp4_requests);
+ sd_dhcp_lease_save (lease, priv->lease_file);
+
+ nm_dhcp_client_set_state (NM_DHCP_CLIENT (self),
+ NM_DHCP_STATE_BOUND,
+ G_OBJECT (ip4_config),
+ options);
+ } else {
+ nm_log_warn (LOGD_DHCP4, "(%s): %s", iface, error->message);
+ nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
+ g_clear_error (&error);
+ }
+
+ sd_dhcp_lease_unref (lease);
+ g_hash_table_destroy (options);
+ g_clear_object (&ip4_config);
+}
+
+static void
+dhcp_event_cb (sd_dhcp_client *client, int event, gpointer user_data)
+{
+ NMDhcpSystemd *self = NM_DHCP_SYSTEMD (user_data);
+ NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
+ const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
+
+ g_assert (priv->client4 == client);
+
+ nm_log_dbg (LOGD_DHCP4, "(%s): DHCPv4 client event %d", iface, event);
+
+ switch (event) {
+ case DHCP_EVENT_EXPIRED:
+ case DHCP_EVENT_STOP:
+ nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_FAIL, NULL, NULL);
+ break;
+ case DHCP_EVENT_RENEW:
+ case DHCP_EVENT_IP_CHANGE:
+ case DHCP_EVENT_IP_ACQUIRE:
+ bound4_handle (self);
+ break;
+ default:
+ nm_log_warn (LOGD_DHCP4, "(%s): unhandled DHCP event %d", iface, event);
+ break;
+ }
+}
+
+static guint16
+get_arp_type (const GByteArray *hwaddr)
+{
+ if (hwaddr->len == ETH_ALEN)
+ return ARPHRD_ETHER;
+ else if (hwaddr->len == INFINIBAND_ALEN)
+ return ARPHRD_INFINIBAND;
+ else
+ g_assert_not_reached ();
+}
+
+static gboolean
+ip4_start (NMDhcpClient *client,
+ const char *dhcp_client_id,
+ const char *dhcp_anycast_addr,
+ const char *hostname)
+{
+ NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (client);
+ const char *iface = nm_dhcp_client_get_iface (client);
+ const GByteArray *hwaddr;
+ sd_dhcp_lease *lease = NULL;
+ const uint8_t *client_id = NULL;
+ size_t client_id_len = 0;
+ struct in_addr last_addr;
+ int r, i;
+
+ g_assert (priv->client4 == NULL);
+ g_assert (priv->client6 == NULL);
+
+ g_free (priv->lease_file);
+ priv->lease_file = get_leasefile_path (iface, nm_dhcp_client_get_uuid (client), FALSE);
+
+ r = sd_dhcp_client_new (&priv->client4);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP4, "(%s): failed to create DHCPv4 client (%d)", iface, r);
+ return FALSE;
+ }
+
+ r = sd_dhcp_client_attach_event (priv->client4, NULL, 0);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP4, "(%s): failed to attach DHCP event (%d)", iface, r);
+ goto error;
+ }
+
+ hwaddr = nm_dhcp_client_get_hw_addr (client);
+ if (hwaddr) {
+ r = sd_dhcp_client_set_mac (priv->client4,
+ hwaddr->data,
+ hwaddr->len,
+ get_arp_type (hwaddr));
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP MAC address (%d)", iface, r);
+ goto error;
+ }
+ }
+
+ r = sd_dhcp_client_set_index (priv->client4, nm_dhcp_client_get_ifindex (client));
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP ifindex (%d)", iface, r);
+ goto error;
+ }
+
+ r = sd_dhcp_client_set_callback (priv->client4, dhcp_event_cb, client);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP callback (%d)", iface, r);
+ goto error;
+ }
+
+ r = sd_dhcp_client_set_request_broadcast (priv->client4, true);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP broadcast (%d)", iface, r);
+ goto error;
+ }
+
+ sd_dhcp_lease_load (priv->lease_file, &lease);
+
+ if (lease) {
+ r = sd_dhcp_lease_get_address (lease, &last_addr);
+ if (r == 0) {
+ r = sd_dhcp_client_set_request_address (priv->client4, &last_addr);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP4, "(%s): failed to set last IPv4 address (%d)", iface, r);
+ goto error;
+ }
+ }
+ }
+
+ if (dhcp_client_id) {
+ gs_unref_bytes GBytes *b = NULL;
+
+ b = nm_dhcp_utils_client_id_string_to_bytes (dhcp_client_id);
+ if (b) {
+ client_id = (const guint8 *) g_bytes_get_data (b, &client_id_len);
+ g_assert (client_id && client_id_len);
+ sd_dhcp_client_set_client_id (priv->client4,
+ client_id[0],
+ client_id + 1,
+ client_id_len - 1);
+ }
+ } else {
+ r = sd_dhcp_lease_get_client_id (lease, &client_id, &client_id_len);
+ if (r == 0 && client_id_len) {
+ sd_dhcp_client_set_client_id (priv->client4,
+ client_id[0],
+ client_id + 1,
+ client_id_len - 1);
+ }
+ }
+
+ if (lease)
+ sd_dhcp_lease_unref (lease);
+
+ /* Add requested options */
+ for (i = 0; dhcp4_requests[i].name; i++) {
+ if (dhcp4_requests[i].include)
+ sd_dhcp_client_set_request_option (priv->client4, dhcp4_requests[i].num);
+ }
+
+ if (hostname) {
+ r = sd_dhcp_client_set_hostname (priv->client4, hostname);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP4, "(%s): failed to set DHCP hostname (%d)", iface, r);
+ goto error;
+ }
+ }
+
+ r = sd_dhcp_client_start (priv->client4);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP4, "(%s): failed to start DHCP (%d)", iface, r);
+ goto error;
+ }
+
+ return TRUE;
+
+error:
+ sd_dhcp_client_unref (priv->client4);
+ priv->client4 = NULL;
+ return FALSE;
+}
+
+static void
+bound6_handle (NMDhcpSystemd *self)
+{
+ /* not yet supported... */
+ nm_log_warn (LOGD_DHCP6, "(%s): internal DHCP does not yet support DHCPv6",
+ nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self)));
+ nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
+}
+
+static void
+dhcp6_event_cb (sd_dhcp6_client *client, int event, gpointer user_data)
+{
+ NMDhcpSystemd *self = NM_DHCP_SYSTEMD (user_data);
+ NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
+ const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
+
+ g_assert (priv->client6 == client);
+
+ nm_log_dbg (LOGD_DHCP6, "(%s): DHCPv6 client event %d", iface, event);
+
+ switch (event) {
+ case DHCP6_EVENT_RETRANS_MAX:
+ nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_TIMEOUT, NULL, NULL);
+ break;
+ case DHCP6_EVENT_RESEND_EXPIRE:
+ case DHCP6_EVENT_STOP:
+ nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_FAIL, NULL, NULL);
+ break;
+ case DHCP6_EVENT_IP_ACQUIRE:
+ bound6_handle (self);
+ break;
+ default:
+ nm_log_warn (LOGD_DHCP6, "(%s): unhandled DHCPv6 event %d", iface, event);
+ break;
+ }
+}
+
+static gboolean
+ip6_start (NMDhcpClient *client,
+ const char *dhcp_anycast_addr,
+ const char *hostname,
+ gboolean info_only,
+ NMSettingIP6ConfigPrivacy privacy,
+ const GByteArray *duid)
+{
+ NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (client);
+ const char *iface = nm_dhcp_client_get_iface (client);
+ const GByteArray *hwaddr;
+ int r, i;
+
+ g_assert (priv->client4 == NULL);
+ g_assert (priv->client6 == NULL);
+ g_return_val_if_fail (duid != NULL, FALSE);
+
+ g_free (priv->lease_file);
+ priv->lease_file = get_leasefile_path (iface, nm_dhcp_client_get_uuid (client), TRUE);
+
+ r = sd_dhcp6_client_new (&priv->client6);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP6, "(%s): failed to create DHCPv6 client (%d)", iface, r);
+ return FALSE;
+ }
+
+ /* NM stores the entire DUID which includes the uint16 "type", while systemd
+ * wants the type passed separately from the following data.
+ */
+ r = sd_dhcp6_client_set_duid (priv->client6,
+ ntohs (((const guint16 *) duid->data)[0]),
+ duid->data + 2,
+ duid->len - 2);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP6, "(%s): failed to create DHCPv6 client (%d)", iface, r);
+ return FALSE;
+ }
+
+ r = sd_dhcp6_client_attach_event (priv->client6, NULL, 0);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP6, "(%s): failed to attach DHCP event (%d)", iface, r);
+ goto error;
+ }
+
+ hwaddr = nm_dhcp_client_get_hw_addr (client);
+ if (hwaddr) {
+ r = sd_dhcp6_client_set_mac (priv->client6,
+ hwaddr->data,
+ hwaddr->len,
+ get_arp_type (hwaddr));
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP6, "(%s): failed to set DHCP MAC address (%d)", iface, r);
+ goto error;
+ }
+ }
+
+ r = sd_dhcp6_client_set_index (priv->client6, nm_dhcp_client_get_ifindex (client));
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP6, "(%s): failed to set DHCP ifindex (%d)", iface, r);
+ goto error;
+ }
+
+ r = sd_dhcp6_client_set_ifname (priv->client6, iface);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP6, "(%s): failed to set DHCP ifname (%d)", iface, r);
+ goto error;
+ }
+
+ r = sd_dhcp6_client_set_callback (priv->client6, dhcp6_event_cb, client);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP6, "(%s): failed to set DHCP callback (%d)", iface, r);
+ goto error;
+ }
+
+ /* Add requested options */
+ for (i = 0; dhcp6_requests[i].name; i++) {
+ if (dhcp6_requests[i].include)
+ sd_dhcp6_client_set_request_option (priv->client6, dhcp6_requests[i].num);
+ }
+
+ r = sd_dhcp6_client_start (priv->client6);
+ if (r < 0) {
+ nm_log_warn (LOGD_DHCP6, "(%s): failed to start DHCP (%d)", iface, r);
+ goto error;
+ }
+
+ return TRUE;
+
+error:
+ sd_dhcp6_client_unref (priv->client6);
+ priv->client6 = NULL;
+ return FALSE;
+}
+
+static void
+stop (NMDhcpClient *client, gboolean release, const GByteArray *duid)
+{
+ NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (client);
+ int r = 0;
+
+ if (priv->client4)
+ r = sd_dhcp_client_stop (priv->client4);
+ else if (priv->client6)
+ r = sd_dhcp6_client_stop (priv->client6);
+
+ if (r) {
+ nm_log_warn (priv->client6 ? LOGD_DHCP6 : LOGD_DHCP4,
+ "(%s): failed to stop DHCP client (%d)",
+ nm_dhcp_client_get_iface (client),
+ r);
+ }
+}
+
+/***************************************************/
+
+static void
+nm_dhcp_systemd_init (NMDhcpSystemd *self)
+{
+}
+
+static void
+dispose (GObject *object)
+{
+ NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (object);
+
+ g_clear_pointer (&priv->lease_file, g_free);
+
+ if (priv->client4) {
+ sd_dhcp_client_stop (priv->client4);
+ sd_dhcp_client_unref (priv->client4);
+ priv->client4 = NULL;
+ }
+
+ if (priv->client6) {
+ sd_dhcp6_client_stop (priv->client6);
+ sd_dhcp6_client_unref (priv->client6);
+ priv->client6 = NULL;
+ }
+
+ G_OBJECT_CLASS (nm_dhcp_systemd_parent_class)->dispose (object);
+}
+
+static void
+nm_dhcp_systemd_class_init (NMDhcpSystemdClass *sdhcp_class)
+{
+ NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS (sdhcp_class);
+ GObjectClass *object_class = G_OBJECT_CLASS (sdhcp_class);
+
+ g_type_class_add_private (sdhcp_class, sizeof (NMDhcpSystemdPrivate));
+
+ /* virtual methods */
+ object_class->dispose = dispose;
+
+ client_class->ip4_start = ip4_start;
+ client_class->ip6_start = ip6_start;
+ client_class->stop = stop;
+}
+
projects / NetworkManager.git / commitdiff