Fix IPv6 DNS server adddress selection

[project/odhcpd.git] / src / odhcpd.c

diff --git a/src/odhcpd.c b/src/odhcpd.c
index b8651dd..3c384e8 100644 (file)
--- a/src/odhcpd.c
+++ b/src/odhcpd.c
@@ -49,6 +49,12 @@ static int rtnl_seq = 0;
 static int urandom_fd = -1;
 
 
+static void sighandler(_unused int signal)
+{
+       uloop_end();
+}
+
+
 int main()
 {
        openlog("odhcpd", LOG_PERROR | LOG_PID, LOG_DAEMON);
@@ -71,6 +77,8 @@ int main()
                return 4;
 
        signal(SIGUSR1, SIG_IGN);
+       signal(SIGINT, sighandler);
+       signal(SIGTERM, sighandler);
 
        if (init_router())
                return 4;
@@ -255,6 +263,25 @@ ssize_t odhcpd_get_interface_addresses(int ifindex,
        return ret;
 }
 
+int odhcpd_get_preferred_interface_address(int ifindex, struct in6_addr *addr)
+{
+       struct odhcpd_ipaddr ipaddrs[8];
+       ssize_t ip_cnt = odhcpd_get_interface_addresses(ifindex, ipaddrs, ARRAY_SIZE(ipaddrs));
+       uint32_t preferred = 0;
+       int ret = 0;
+
+       for (ssize_t i = 0; i < ip_cnt; i++) {
+               struct odhcpd_ipaddr *ipaddr = &ipaddrs[i];
+
+               if (ipaddr->preferred > preferred || !preferred) {
+                       preferred = ipaddr->preferred;
+                       *addr = ipaddr->addr;
+                       ret = 1;
+               }
+       }
+
+       return ret;
+}
 
 struct interface* odhcpd_get_interface_by_index(int ifindex)
 {
@@ -377,6 +404,11 @@ int odhcpd_register(struct odhcpd_event *event)
        return uloop_fd_add(&event->uloop, ULOOP_READ);
 }
 
+void odhcpd_process(struct odhcpd_event *event)
+{
+       odhcpd_receive_packets(&event->uloop, 0);
+}
+
 void odhcpd_urandom(void *data, size_t len)
 {
        read(urandom_fd, data, len);