static NMIP4Config *
lease_to_ip4_config (const char *iface,
int ifindex,
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, i;
NMPlatformIP4Address address;
GString *l;
gs_free sd_dhcp_route **routes = NULL;
guint16 mtu;
int r, num;
guint64 end_time;
const void *data;
gsize data_len;
gboolean metered = FALSE;
gboolean static_default_gateway = FALSE;
g_return_val_if_fail (lease != NULL, NULL);
ip4_config = nm_ip4_config_new (ifindex);
/* Address */
sd_dhcp_lease_get_address (lease, &tmp_addr);
memset (&address, 0, sizeof (address));
address.address = tmp_addr.s_addr;
address.peer_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 */
sd_dhcp_lease_get_netmask (lease, &tmp_addr);
address.plen = nm_utils_ip4_netmask_to_prefix (tmp_addr.s_addr);
LOG_LEASE (LOGD_DHCP4, " plen %d", address.plen);
add_option (options,
dhcp4_requests,
SD_DHCP_OPTION_SUBNET_MASK,
nm_utils_inet4_ntop (tmp_addr.s_addr, NULL));
/* Lease time */
sd_dhcp_lease_get_lifetime (lease, &lifetime);
address.timestamp = nm_utils_get_monotonic_timestamp_s ();
address.lifetime = address.preferred = lifetime;
end_time = (guint64) time (NULL) + lifetime;
LOG_LEASE (LOGD_DHCP4, " expires in %" G_GUINT32_FORMAT " seconds", lifetime);
add_option_u64 (options,
dhcp4_requests,
SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME,
end_time);
address.addr_source = NM_IP_CONFIG_SOURCE_DHCP;
nm_ip4_config_add_address (ip4_config, &address);
/* 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, SD_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 option 15 "Domain Name".
* As systemd escapes such characters, split them at \\032. */
char **domains = g_strsplit (str, "\\032", 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, SD_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, SD_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 = { 0 };
const char *gw_str;
guint8 plen;
struct in_addr a;
if (sd_dhcp_route_get_destination (routes[i], &a) < 0)
continue;
route.network = a.s_addr;
if ( sd_dhcp_route_get_destination_prefix_length (routes[i], &plen) < 0
|| plen > 32)
continue;
route.plen = plen;
if (sd_dhcp_route_get_gateway (routes[i], &a) < 0)
continue;
route.gateway = a.s_addr;
if (route.plen) {
route.rt_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);
} else {
if (!static_default_gateway) {
static_default_gateway = TRUE;
nm_ip4_config_set_gateway (ip4_config, route.gateway);
str = nm_utils_inet4_ntop (route.gateway, NULL);
LOG_LEASE (LOGD_DHCP4, " gateway %s", str);
add_option (options, dhcp4_requests, SD_DHCP_OPTION_ROUTER, str);
}
}
}
if (l->len)
add_option (options, dhcp4_requests, SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE, l->str);
g_string_free (l, TRUE);
}
/* If the DHCP server returns both a Classless Static Routes option and a
* Router option, the DHCP client MUST ignore the Router option [RFC 3442].
* Be more lenient and ignore the Router option only if Classless Static
* Routes contain a default gateway (as other DHCP backends do).
*/
/* Gateway */
if (!static_default_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, SD_DHCP_OPTION_ROUTER, str);
}
}
/* 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, SD_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);
LOG_LEASE (LOGD_DHCP4, " ntp server '%s'", str);
g_string_append_printf (l, "%s%s", l->len ? " " : "", str);
}
add_option (options, dhcp4_requests, SD_DHCP_OPTION_NTP_SERVER, l->str);
g_string_free (l, TRUE);
}
r = sd_dhcp_lease_get_vendor_specific (lease, &data, &data_len);
if (r >= 0)
metered = !!memmem (data, data_len, "ANDROID_METERED", NM_STRLEN ("ANDROID_METERED"));
nm_ip4_config_set_metered (ip4_config, metered);
return ip4_config;
}
static NMIP6Config *
lease_to_ip6_config (const char *iface,
int ifindex,
sd_dhcp6_lease *lease,
GHashTable *options,
gboolean log_lease,
gboolean info_only,
GError **error)
{
struct in6_addr tmp_addr, *dns;
uint32_t lft_pref, lft_valid;
NMIP6Config *ip6_config;
const char *addr_str;
char **domains;
GString *str;
int num, i;
gint32 ts;
g_return_val_if_fail (lease, NULL);
ip6_config = nm_ip6_config_new (ifindex);
ts = nm_utils_get_monotonic_timestamp_s ();
str = g_string_sized_new (30);
/* Addresses */
sd_dhcp6_lease_reset_address_iter (lease);
while (sd_dhcp6_lease_get_address (lease, &tmp_addr, &lft_pref, &lft_valid) >= 0) {
NMPlatformIP6Address address = {
.plen = 128,
.address = tmp_addr,
.timestamp = ts,
.lifetime = lft_valid,
.preferred = lft_pref,
.addr_source = NM_IP_CONFIG_SOURCE_DHCP,
};
nm_ip6_config_add_address (ip6_config, &address);
addr_str = nm_utils_inet6_ntop (&tmp_addr, NULL);
g_string_append_printf (str, "%s%s", str->len ? " " : "", addr_str);
LOG_LEASE (LOGD_DHCP6,
" address %s",
nm_platform_ip6_address_to_string (&address, NULL, 0));
};
if (str->len) {
add_option (options, dhcp6_requests, DHCP6_OPTION_IP_ADDRESS, str->str);
g_string_set_size (str , 0);
}
if (!info_only && nm_ip6_config_get_num_addresses (ip6_config) == 0) {
g_string_free (str, TRUE);
g_object_unref (ip6_config);
g_set_error_literal (error,
NM_MANAGER_ERROR,
NM_MANAGER_ERROR_FAILED,
"no address received in managed mode");
return NULL;
}
/* DNS servers */
num = sd_dhcp6_lease_get_dns (lease, &dns);
if (num > 0) {
for (i = 0; i < num; i++) {
nm_ip6_config_add_nameserver (ip6_config, &dns[i]);
addr_str = nm_utils_inet6_ntop (&dns[i], NULL);
g_string_append_printf (str, "%s%s", str->len ? " " : "", addr_str);
LOG_LEASE (LOGD_DHCP6, " nameserver %s", addr_str);
}
add_option (options, dhcp6_requests, SD_DHCP6_OPTION_DNS_SERVERS, str->str);
g_string_set_size (str, 0);
}
/* Search domains */
num = sd_dhcp6_lease_get_domains (lease, &domains);
if (num > 0) {
for (i = 0; i < num; i++) {
nm_ip6_config_add_search (ip6_config, domains[i]);
g_string_append_printf (str, "%s%s", str->len ? " " : "", domains[i]);
LOG_LEASE (LOGD_DHCP6, " domain name '%s'", domains[i]);
}
add_option (options, dhcp6_requests, SD_DHCP6_OPTION_DOMAIN_LIST, str->str);
g_string_set_size (str, 0);
}
g_string_free (str, TRUE);
return ip6_config;
}
static void
bound6_handle (NMDhcpSystemd *self)
{
NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
gs_unref_object NMIP6Config *ip6_config = NULL;
gs_unref_hashtable GHashTable *options = NULL;
gs_free_error GError *error = NULL;
sd_dhcp6_lease *lease;
int r;
r = sd_dhcp6_client_get_lease (priv->client6, &lease);
if (r < 0 || !lease) {
_LOGW (" no lease!");
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
return;
}
_LOGD ("lease available");
options = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_free);
ip6_config = lease_to_ip6_config (iface,
nm_dhcp_client_get_ifindex (NM_DHCP_CLIENT (self)),
lease,
options,
TRUE,
priv->info_only,
&error);
if (ip6_config) {
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self),
NM_DHCP_STATE_BOUND,
G_OBJECT (ip6_config),
options);
} else {
_LOGW ("%s", error->message);
nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
}
}
static NMIP4Config *
lease_to_ip4_config (const char *iface,
int ifindex,
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, i;
NMPlatformIP4Address address;
GString *l;
struct sd_dhcp_route *routes;
guint16 mtu;
int r, num;
guint64 end_time;
const void *data;
gsize data_len;
gboolean metered = FALSE;
g_return_val_if_fail (lease != NULL, NULL);
ip4_config = nm_ip4_config_new (ifindex);
/* Address */
sd_dhcp_lease_get_address (lease, &tmp_addr);
memset (&address, 0, sizeof (address));
address.address = tmp_addr.s_addr;
address.peer_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 */
sd_dhcp_lease_get_netmask (lease, &tmp_addr);
address.plen = nm_utils_ip4_netmask_to_prefix (tmp_addr.s_addr);
LOG_LEASE (LOGD_DHCP4, " plen %d", address.plen);
add_option (options,
dhcp4_requests,
DHCP_OPTION_SUBNET_MASK,
nm_utils_inet4_ntop (tmp_addr.s_addr, NULL));
/* Lease time */
sd_dhcp_lease_get_lifetime (lease, &lifetime);
address.timestamp = nm_utils_get_monotonic_timestamp_s ();
address.lifetime = address.preferred = lifetime;
end_time = (guint64) time (NULL) + lifetime;
LOG_LEASE (LOGD_DHCP4, " expires in %" G_GUINT32_FORMAT " seconds", lifetime);
add_option_u64 (options,
dhcp4_requests,
DHCP_OPTION_IP_ADDRESS_LEASE_TIME,
end_time);
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);
LOG_LEASE (LOGD_DHCP4, " ntp server '%s'", str);
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);
}
r = sd_dhcp_lease_get_vendor_specific (lease, &data, &data_len);
if (r >= 0)
metered = !!memmem (data, data_len, "ANDROID_METERED", STRLEN ("ANDROID_METERED"));
nm_ip4_config_set_metered (ip4_config, metered);
return ip4_config;
}
