Add SPDX license identifiers to source files under the LGPL

[thirdparty/systemd.git] / src / libsystemd-network / sd-dhcp6-lease.c

diff --git a/src/libsystemd-network/sd-dhcp6-lease.c b/src/libsystemd-network/sd-dhcp6-lease.c
index 8631aabc4014b94bb99c9736cfc092a4a98f5dba..6f604e072f93c61d641777c64b6cf61f6746a8b7 100644 (file)
--- a/src/libsystemd-network/sd-dhcp6-lease.c
+++ b/src/libsystemd-network/sd-dhcp6-lease.c
@@ -1,5 +1,4 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /***
   This file is part of systemd.
 
@@ -22,11 +21,11 @@
 
 #include <errno.h>
 
-#include "strv.h"
-#include "util.h"
-
+#include "alloc-util.h"
 #include "dhcp6-lease-internal.h"
 #include "dhcp6-protocol.h"
+#include "strv.h"
+#include "util.h"
 
 int dhcp6_lease_clear_timers(DHCP6IA *ia) {
         assert_return(ia, -EINVAL);
@@ -228,7 +227,7 @@ int dhcp6_lease_set_domains(sd_dhcp6_lease *lease, uint8_t *optval,
         if (r < 0)
                 return 0;
 
-        free(lease->domains);
+        strv_free(lease->domains);
         lease->domains = domains;
         lease->domains_count = r;
 
@@ -247,8 +246,7 @@ int sd_dhcp6_lease_get_domains(sd_dhcp6_lease *lease, char ***domains) {
         return -ENOENT;
 }
 
-int dhcp6_lease_set_ntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen)
-{
+int dhcp6_lease_set_ntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) {
         int r;
         uint16_t subopt;
         size_t sublen;
@@ -257,6 +255,10 @@ int dhcp6_lease_set_ntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen)
         assert_return(lease, -EINVAL);
         assert_return(optval, -EINVAL);
 
+        lease->ntp = mfree(lease->ntp);
+        lease->ntp_count = 0;
+        lease->ntp_allocated = 0;
+
         while ((r = dhcp6_option_parse(&optval, &optlen, &subopt, &sublen,
                                        &subval)) >= 0) {
                 int s;
@@ -299,6 +301,38 @@ int dhcp6_lease_set_ntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen)
         return 0;
 }
 
+int dhcp6_lease_set_sntp(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) {
+        int r;
+
+        assert_return(lease, -EINVAL);
+        assert_return(optval, -EINVAL);
+
+        if (!optlen)
+                return 0;
+
+        if (lease->ntp || lease->ntp_fqdn) {
+                log_dhcp6_client(client, "NTP information already provided");
+
+                return 0;
+        }
+
+        log_dhcp6_client(client, "Using deprecated SNTP information");
+
+        r = dhcp6_option_parse_ip6addrs(optval, optlen, &lease->ntp,
+                                        lease->ntp_count,
+                                        &lease->ntp_allocated);
+        if (r < 0) {
+                log_dhcp6_client(client, "Invalid SNTP server option: %s",
+                                 strerror(-r));
+
+                return r;
+        }
+
+        lease->ntp_count = r;
+
+        return 0;
+}
+
 int sd_dhcp6_lease_get_ntp_addrs(sd_dhcp6_lease *lease,
                                  struct in6_addr **addrs) {
         assert_return(lease, -EINVAL);
@@ -325,28 +359,38 @@ int sd_dhcp6_lease_get_ntp_fqdn(sd_dhcp6_lease *lease, char ***ntp_fqdn) {
 }
 
 sd_dhcp6_lease *sd_dhcp6_lease_ref(sd_dhcp6_lease *lease) {
-        if (lease)
-                assert_se(REFCNT_INC(lease->n_ref) >= 2);
+
+        if (!lease)
+                return NULL;
+
+        assert(lease->n_ref >= 1);
+        lease->n_ref++;
 
         return lease;
 }
 
 sd_dhcp6_lease *sd_dhcp6_lease_unref(sd_dhcp6_lease *lease) {
-        if (lease && REFCNT_DEC(lease->n_ref) == 0) {
-                free(lease->serverid);
-                dhcp6_lease_free_ia(&lease->ia);
 
-                free(lease->dns);
+        if (!lease)
+                return NULL;
 
-                lease->domains = strv_free(lease->domains);
+        assert(lease->n_ref >= 1);
+        lease->n_ref--;
 
-                free(lease->ntp);
+        if (lease->n_ref > 0)
+                return NULL;
 
-                lease->ntp_fqdn = strv_free(lease->ntp_fqdn);
-                free(lease);
-        }
+        free(lease->serverid);
+        dhcp6_lease_free_ia(&lease->ia);
 
-        return NULL;
+        free(lease->dns);
+
+        lease->domains = strv_free(lease->domains);
+
+        free(lease->ntp);
+
+        lease->ntp_fqdn = strv_free(lease->ntp_fqdn);
+        return mfree(lease);
 }
 
 int dhcp6_lease_new(sd_dhcp6_lease **ret) {
@@ -356,7 +400,7 @@ int dhcp6_lease_new(sd_dhcp6_lease **ret) {
         if (!lease)
                 return -ENOMEM;
 
-        lease->n_ref = REFCNT_INIT;
+        lease->n_ref = 1;
 
         LIST_HEAD_INIT(lease->ia.addresses);