#include <unistd.h>
#include <signal.h>
#include <stdbool.h>
+#include <syslog.h>
#include <arpa/inet.h>
#include <net/if.h>
static struct nl_sock *rtnl_socket = NULL;
static int urandom_fd = -1;
-
static void sighandler(_unused int signal)
{
uloop_end();
"== %s Usage ==\n\n"
" -h, --help Print this help\n"
" -l level Specify log level 0..7 (default %d)\n",
- app, LOG_WARNING
+ app, config.log_level
);
}
{
openlog("odhcpd", LOG_PERROR | LOG_PID, LOG_DAEMON);
int opt;
- int log_level = LOG_INFO;
+
while ((opt = getopt(argc, argv, "hl:")) != -1) {
switch (opt) {
case 'h':
print_usage(argv[0]);
return 0;
case 'l':
- log_level = atoi(optarg);
- fprintf(stderr, "Log level set to %d\n", log_level);
+ config.log_level = (atoi(optarg) & LOG_PRIMASK);
+ fprintf(stderr, "Log level set to %d\n", config.log_level);
break;
}
}
- setlogmask(LOG_UPTO(log_level));
+ setlogmask(LOG_UPTO(config.log_level));
uloop_init();
if (getuid() != 0) {
return ctxt.ret;
}
-int odhcpd_get_linklocal_interface_address(int ifindex, struct in6_addr *lladdr)
+static int odhcpd_get_linklocal_interface_address(int ifindex, struct in6_addr *lladdr)
{
int status = -1;
struct sockaddr_in6 addr = {AF_INET6, 0, 0, ALL_IPV6_ROUTERS, ifindex};
return status;
}
+/*
+ * DNS address selection criteria order :
+ * - use IPv6 address with valid lifetime if none is yet selected
+ * - use IPv6 address with a preferred lifetime if the already selected IPv6 address is deprecated
+ * - use an IPv6 ULA address if the already selected IPv6 address is not an ULA address
+ * - use the IPv6 address with the longest preferred lifetime
+ */
+int odhcpd_get_interface_dns_addr(const struct interface *iface, struct in6_addr *addr)
+{
+ time_t now = odhcpd_time();
+ ssize_t m = -1;
+
+ for (size_t i = 0; i < iface->ia_addr_len; ++i) {
+ if (iface->ia_addr[i].valid <= (uint32_t)now)
+ continue;
+
+ if (m < 0) {
+ m = i;
+ continue;
+ }
+
+ if (iface->ia_addr[m].preferred >= (uint32_t)now &&
+ iface->ia_addr[i].preferred < (uint32_t)now)
+ continue;
+
+ if (IN6_IS_ADDR_ULA(&iface->ia_addr[i].addr)) {
+ if (!IN6_IS_ADDR_ULA(&iface->ia_addr[m].addr)) {
+ m = i;
+ continue;
+ }
+ } else if (IN6_IS_ADDR_ULA(&iface->ia_addr[m].addr))
+ continue;
+
+ if (iface->ia_addr[i].preferred > iface->ia_addr[m].preferred)
+ m = i;
+ }
+
+ if (m >= 0) {
+ *addr = iface->ia_addr[m].addr;
+ return 0;
+ }
+
+ return odhcpd_get_linklocal_interface_address(iface->ifindex, addr);
+}
+
int odhcpd_setup_route(const struct in6_addr *addr, const int prefixlen,
const struct interface *iface, const struct in6_addr *gw,
const uint32_t metric, const bool add)