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netconfig: Switch IPv4 DHCP event handler to use ifaddr helper

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This commit is contained in:
Tim Kourt 2019-07-30 18:16:08 -07:00 committed by Denis Kenzior
parent 10791d02aa
commit 72e6598c6e
1 changed files with 22 additions and 61 deletions
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83
src/netconfig.c
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@ -402,68 +402,12 @@ gateway:
return true;
}
enum netconfig_action {
NETCONFIG_ACTION_INSTALL,
NETCONFIG_ACTION_UNINSTALL,
};
static void netconfig_ipv4_dhcp_addressing(struct netconfig *netconfig,
const struct l_dhcp_client *client,
enum netconfig_action action)
{
const struct l_dhcp_lease *lease;
struct netconfig_ifaddr ifaddr;
struct in_addr in_addr;
char *netmask;
char *gateway;
char **dns;
l_debug();
lease = l_dhcp_client_get_lease(client);
if (!lease)
return;
ifaddr.ip = l_dhcp_lease_get_address(lease);
gateway = l_dhcp_lease_get_gateway(lease);
if (!ifaddr.ip || !gateway)
goto no_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;
ifaddr.broadcast = l_dhcp_lease_get_broadcast(lease);
dns = l_dhcp_lease_get_dns(lease);
ifaddr.family = AF_INET;
ifaddr.proto = RTPROT_DHCP;
switch (action) {
case NETCONFIG_ACTION_INSTALL:
netconfig_install_addresses(netconfig, &ifaddr, gateway, dns);
break;
case NETCONFIG_ACTION_UNINSTALL:
netconfig_uninstall_addresses(netconfig, &ifaddr, gateway, dns);
break;
}
l_strfreev(dns);
l_free(netmask);
l_free(ifaddr.broadcast);
no_ip:
l_free(ifaddr.ip);
l_free(gateway);
}
static void netconfig_ipv4_dhcp_event_handler(struct l_dhcp_client *client,
enum l_dhcp_client_event event,
void *userdata)
{
struct netconfig *netconfig = userdata;
struct netconfig_ifaddr *ifaddr;
l_debug("DHCPv4 event %d", event);
@ -471,13 +415,30 @@ static void netconfig_ipv4_dhcp_event_handler(struct l_dhcp_client *client,
case L_DHCP_CLIENT_EVENT_LEASE_RENEWED:
case L_DHCP_CLIENT_EVENT_LEASE_OBTAINED:
case L_DHCP_CLIENT_EVENT_IP_CHANGED:
netconfig_ipv4_dhcp_addressing(netconfig, client,
NETCONFIG_ACTION_INSTALL);
ifaddr = netconfig_ipv4_get_ifaddr(netconfig, RTPROT_DHCP);
if (!ifaddr) {
l_error("netconfig: Failed to obtain IP addresses from "
"DHCPv4 lease.");
return;
}
/* TODO Install address */
netconfig_ifaddr_destroy(ifaddr);
break;
case L_DHCP_CLIENT_EVENT_LEASE_EXPIRED:
netconfig_ipv4_dhcp_addressing(netconfig, client,
NETCONFIG_ACTION_UNINSTALL);
ifaddr = netconfig_ipv4_get_ifaddr(netconfig, RTPROT_DHCP);
if (!ifaddr) {
l_error("netconfig: Failed to obtain IP addresses from "
"DHCPv4 lease.");
return;
}
/* TODO Uninstall address */
netconfig_ifaddr_destroy(ifaddr);
/* Fall through. */
case L_DHCP_CLIENT_EVENT_NO_LEASE:
/*