return 0;
}
+int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) {
+ assert_return(lease, -EINVAL);
+ assert_return(addr, -EINVAL);
+
+ addr->s_addr = lease->next_server;
+
+ return 0;
+}
+
sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) {
if (lease)
assert_se(REFCNT_INC(lease->n_ref) >= 2);
assert(lease);
assert(lease_file);
- r = mkdir_safe_label("/run/systemd/network/leases", 0755, 0, 0);
- if (r < 0)
- goto finish;
-
r = fopen_temporary(lease_file, &f, &temp_path);
if (r < 0)
goto finish;
"SERVER_ADDRESS=%s\n", string);
}
+ r = sd_dhcp_lease_get_next_server(lease, &address);
+ if (r >= 0) {
+ string = inet_ntop(AF_INET, &address, buf, INET_ADDRSTRLEN);
+ if (!string) {
+ r = -errno;
+ goto finish;
+ }
+
+ fprintf(f,
+ "NEXT_SERVER=%s\n", string);
+ }
+
r = sd_dhcp_lease_get_mtu(lease, &mtu);
if (r >= 0)
fprintf(f, "MTU=%" PRIu16 "\n", mtu);
int dhcp_lease_load(const char *lease_file, sd_dhcp_lease **ret) {
_cleanup_dhcp_lease_unref_ sd_dhcp_lease *lease = NULL;
_cleanup_free_ char *address = NULL, *router = NULL, *netmask = NULL,
- *server_address = NULL, *mtu = NULL;
+ *server_address = NULL, *next_server = NULL,
+ *mtu = NULL;
struct in_addr addr;
int r;
"ROUTER", &router,
"NETMASK", &netmask,
"SERVER_IDENTIFIER", &server_address,
+ "NEXT_SERVER", &next_server,
"MTU", &mtu,
"DOMAINNAME", &lease->domainname,
"HOSTNAME", &lease->hostname,
lease->server_address = addr.s_addr;
}
+ if (next_server) {
+ r = inet_pton(AF_INET, next_server, &addr);
+ if (r < 0)
+ return r;
+
+ lease->next_server = addr.s_addr;
+ }
+
if (mtu) {
uint16_t u;
if (sscanf(mtu, "%" SCNu16, &u) > 0)
return 0;
}
+
+int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) {
+ uint32_t address;
+
+ assert(lease);
+ assert(lease->address != INADDR_ANY);
+
+ address = be32toh(lease->address);
+
+ /* fall back to the default subnet masks based on address class */
+
+ if ((address >> 31) == 0x0)
+ /* class A, leading bits: 0 */
+ lease->subnet_mask = htobe32(0xff000000);
+ else if ((address >> 30) == 0x2)
+ /* class B, leading bits 10 */
+ lease->subnet_mask = htobe32(0xffff0000);
+ else if ((address >> 29) == 0x6)
+ /* class C, leading bits 110 */
+ lease->subnet_mask = htobe32(0xffffff00);
+ else
+ /* class D or E, no default mask. give up */
+ return -ERANGE;
+
+ return 0;
+}