fdo-mirrors/NetworkManager
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git synced 2026-05-05 12:18:13 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

dhcp: nettools: retrieve and expose the expiry time

Browse source 
also fix the lease time: it should be the time in seconds that the lease
lasts

(cherry picked from commit cded6d5184)
This commit is contained in:
Francesco Giudici 2019-07-19 10:07:15 +02:00 • committed by Beniamino Galvani
parent 7f8fdd28f2
commit bf28a9e92f
1 changed files with 41 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

49
src/dhcp/nm-dhcp-nettools.c
View file

@ -368,10 +368,13 @@ lease_parse_address (NDhcp4ClientLease *lease,
{
char addr_str[NM_UTILS_INET_ADDRSTRLEN];
const gint64 ts = nm_utils_get_monotonic_timestamp_ns ();
const gint64 ts_clock_boottime = nm_utils_monotonic_timestamp_as_boottime (ts, 1);
struct in_addr a_address;
struct in_addr a_netmask;
guint32 a_plen;
guint64 a_lifetime;
guint64 nettools_lifetime;
gint64 a_lifetime;
gint64 a_expiry;
n_dhcp4_client_lease_get_yiaddr (lease, &a_address);
if (a_address.s_addr == INADDR_ANY) {
@ -380,7 +383,29 @@ lease_parse_address (NDhcp4ClientLease *lease,
}
/* n_dhcp4_client_lease_get_lifetime() never fails */
n_dhcp4_client_lease_get_lifetime (lease, &a_lifetime);
n_dhcp4_client_lease_get_lifetime (lease, &nettools_lifetime);
/* FIXME: n_dhcp4_client_lease_get_lifetime() returns the time in nsec of CLOCK_BOOTTIME.
* We want to retrieve the original lifetime value in seconds, so we approximate it in a_lifetime.
* Use a nettools API to retrieve the original value as passed by the server.
*/
if (nettools_lifetime == G_MAXUINT64) {
a_lifetime = NM_PLATFORM_LIFETIME_PERMANENT;
a_expiry = NM_PLATFORM_LIFETIME_PERMANENT;
} else {
gint64 ts_time = time (NULL);
a_lifetime = ((gint64) nettools_lifetime - ts_clock_boottime) / NM_UTILS_NS_PER_SECOND;
/* A lease time of 0 is allowed on some dhcp servers, so, let's accept it. */
if (a_lifetime < 0)
a_lifetime = 0;
else if (a_lifetime > NM_PLATFORM_LIFETIME_PERMANENT)
a_lifetime = NM_PLATFORM_LIFETIME_PERMANENT - 1;
if (ts_time > NM_PLATFORM_LIFETIME_PERMANENT - a_lifetime)
a_expiry = NM_PLATFORM_LIFETIME_PERMANENT - 1;
else
a_expiry = ts_time + a_lifetime;
}
if (!lease_get_in_addr (lease, NM_DHCP_OPTION_DHCP4_SUBNET_MASK, &a_netmask)) {
nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "could not get netmask from lease");
@ -400,12 +425,20 @@ lease_parse_address (NDhcp4ClientLease *lease,
NM_DHCP_OPTION_DHCP4_SUBNET_MASK,
nm_utils_inet4_ntop (a_netmask.s_addr, addr_str));
LOG_LEASE (LOGD_DHCP4, "expires in %u seconds",
(guint) ((a_lifetime - ts)/1000000000));
LOG_LEASE (LOGD_DHCP4, "%s '%u' seconds (at %lld)",
nm_dhcp_option_request_string (_nm_dhcp_option_dhcp4_options,
NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME),
(guint) a_lifetime,
(long long) a_expiry);
nm_dhcp_option_add_option_u64 (options,
_nm_dhcp_option_dhcp4_options,
NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME,
(guint64) (a_lifetime / 1000000000));
(guint64) a_lifetime);
nm_dhcp_option_add_option_u64 (options,
_nm_dhcp_option_dhcp4_options,
NM_DHCP_OPTION_DHCP4_NM_EXPIRY,
(guint64) a_expiry);
nm_ip4_config_add_address (ip4_config,
&((const NMPlatformIP4Address) {
@ -413,9 +446,9 @@ lease_parse_address (NDhcp4ClientLease *lease,
.peer_address = a_address.s_addr,
.plen = a_plen,
.addr_source = NM_IP_CONFIG_SOURCE_DHCP,
.timestamp = ts / 1000000000,
.lifetime = (a_lifetime - ts) / 1000000000,
.preferred = (a_lifetime - ts) / 1000000000,
.timestamp = ts / NM_UTILS_NS_PER_SECOND,
.lifetime = a_lifetime,
.preferred = a_lifetime,
}));
return TRUE;