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netconfig: Add helper for IPv4 addresses

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netconfig_ipv4_get_ifaddr helper function allows to fetch IPv4
addresses from static or dynamic sources. The origin of the addresses
is noted in 'ipv4_is_static' flag.
This commit is contained in:
Tim Kourt 2019-07-30 18:16:05 -07:00 committed by Denis Kenzior
parent c13b0971bb
commit dd188bf97a
1 changed files with 90 additions and 0 deletions
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90
src/netconfig.c
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@ -46,6 +46,7 @@ struct netconfig {
enum station_state station_state;
struct l_dhcp_client *dhcp_client;
struct l_queue *ifaddr_list;
bool ipv4_is_static:1;
};
struct netconfig_ifaddr {
@ -115,6 +116,95 @@ static struct netconfig *netconfig_find(uint32_t ifindex)
return NULL;
}
static struct l_settings *netconfig_get_connected_network_settings(
struct netconfig *netconfig)
{
struct station *station;
const struct network *network;
station = station_find(netconfig->ifindex);
if (!station)
return NULL;
network = station_get_connected_network(station);
if (!network)
return NULL;
return network_get_settings(network);
}
static struct netconfig_ifaddr *netconfig_ipv4_get_ifaddr(
struct netconfig *netconfig,
uint8_t proto)
{
const struct l_dhcp_lease *lease;
const struct l_settings *settings;
struct netconfig_ifaddr *ifaddr;
struct in_addr in_addr;
char *netmask;
char *ip;
switch (proto) {
case RTPROT_STATIC:
settings = netconfig_get_connected_network_settings(netconfig);
if (!settings)
return NULL;
ip = l_settings_get_string(settings, "IPv4", "ip");
if (!ip)
return NULL;
netconfig->ipv4_is_static = true;
ifaddr = l_new(struct netconfig_ifaddr, 1);
ifaddr->ip = ip;
netmask = l_settings_get_string(settings, "IPv4", "netmask");
if (netmask && inet_pton(AF_INET, netmask, &in_addr) > 0)
ifaddr->prefix_len = __builtin_popcountl(
L_BE32_TO_CPU(in_addr.s_addr));
else
ifaddr->prefix_len = 24;
l_free(netmask);
ifaddr->broadcast = l_settings_get_string(settings, "IPv4",
"broadcast");
ifaddr->family = AF_INET;
return ifaddr;
case RTPROT_DHCP:
lease = l_dhcp_client_get_lease(netconfig->dhcp_client);
if (!lease)
return NULL;
ip = l_dhcp_lease_get_address(lease);
if (!ip)
return NULL;
ifaddr = l_new(struct netconfig_ifaddr, 1);
ifaddr->ip = ip;
netmask = l_dhcp_lease_get_netmask(lease);
if (netmask && inet_pton(AF_INET, netmask, &in_addr) > 0)
ifaddr->prefix_len = __builtin_popcountl(
L_BE32_TO_CPU(in_addr.s_addr));
else
ifaddr->prefix_len = 24;
l_free(netmask);
ifaddr->broadcast = l_dhcp_lease_get_broadcast(lease);
ifaddr->family = AF_INET;
return ifaddr;
}
return NULL;
}
static struct netconfig_ifaddr *netconfig_ifaddr_find(
const struct netconfig *netconfig,
uint8_t family, uint8_t prefix_len,