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netconfig: Add IPv4 domain name helper and installer

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The provided domain name helper allows to override the DHCP lease
option value with the static one from network configuration file.
This commit is contained in:
Tim Kourt 2019-12-10 16:34:53 -08:00 committed by Denis Kenzior
parent 098820a40c
commit fb338154a2
1 changed files with 33 additions and 1 deletions
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34
src/netconfig.c
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@ -278,6 +278,28 @@ static char **netconfig_ipv4_get_dns(struct netconfig *netconfig, uint8_t proto)
return NULL;
}
static char *netconfig_ipv4_get_domain_name(struct netconfig *netconfig,
uint8_t proto)
{
const struct l_dhcp_lease *lease;
char *domain_name;
domain_name = l_settings_get_string(netconfig->active_settings,
"IPv4", "DomainName");
if (domain_name)
/* Allow to override the DHCP domain name with setting entry. */
return domain_name;
if (proto != RTPROT_DHCP)
return NULL;
lease = l_dhcp_client_get_lease(netconfig->dhcp_client);
if (!lease)
return NULL;
return l_dhcp_lease_get_domain_name(lease);
}
static struct netconfig_ifaddr *netconfig_ipv6_get_ifaddr(
struct netconfig *netconfig,
uint8_t proto)
@ -727,6 +749,7 @@ static void netconfig_ipv4_ifaddr_add_cmd_cb(int error, uint16_t type,
struct netconfig *netconfig = user_data;
struct netconfig_ifaddr *ifaddr;
char **dns;
char *domain_name;
if (error && error != -EEXIST) {
l_error("netconfig: Failed to add IP address. "
@ -751,12 +774,21 @@ static void netconfig_ipv4_ifaddr_add_cmd_cb(int error, uint16_t type,
dns = netconfig_ipv4_get_dns(netconfig, netconfig->rtm_protocol);
if (!dns) {
l_error("netconfig: Failed to obtain DNS addresses.");
goto done;
goto domain_name;
}
resolve_add_dns(netconfig->ifindex, ifaddr->family, dns);
l_strv_free(dns);
domain_name:
domain_name = netconfig_ipv4_get_domain_name(netconfig,
netconfig->rtm_protocol);
if (!domain_name)
goto done;
resolve_add_domain_name(netconfig->ifindex, domain_name);
l_free(domain_name);
done:
netconfig_ifaddr_destroy(ifaddr);
}