[systemd-devel] [PATCH 17/24] sd-dhcp6-lease: Add functions for accessing lease and addresses

[Patrik Flykt]

Add support functions for accessing the current client lease as well
as iterating over the addresses and get their preferred and valid
lifetimes.
---
 src/libsystemd-network/dhcp6-lease-internal.h |  2 ++
 src/libsystemd-network/sd-dhcp6-client.c      | 12 +++++++++
 src/libsystemd-network/sd-dhcp6-lease.c       | 39 +++++++++++++++++++++++++++
 src/systemd/sd-dhcp6-client.h                 |  4 +++
 src/systemd/sd-dhcp6-lease.h                  | 11 ++++++++
 5 files changed, 68 insertions(+)

diff --git a/src/libsystemd-network/dhcp6-lease-internal.h b/src/libsystemd-network/dhcp6-lease-internal.h
index f4f1488..295c223 100644
--- a/src/libsystemd-network/dhcp6-lease-internal.h
+++ b/src/libsystemd-network/dhcp6-lease-internal.h
@@ -37,6 +37,8 @@ struct sd_dhcp6_lease {
         uint8_t preference;
 
         DHCP6IA ia;
+
+        DHCP6Address *addr_iter;
 };
 
 int dhcp6_lease_clear_timers(DHCP6IA *ia);
diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index a18698c..52f4e10 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -131,6 +131,18 @@ int sd_dhcp6_client_set_mac(sd_dhcp6_client *client,
         return 0;
 }
 
+int sd_dhcp6_client_get_lease(sd_dhcp6_client *client, sd_dhcp6_lease **ret) {
+        assert_return(client, -EINVAL);
+        assert_return(ret, -EINVAL);
+
+        if (!client->lease)
+                return -ENOMSG;
+
+        *ret = sd_dhcp6_lease_ref(client->lease);
+
+        return 0;
+}
+
 static sd_dhcp6_client *client_notify(sd_dhcp6_client *client, int event) {
         if (client->cb) {
                 client = sd_dhcp6_client_ref(client);
diff --git a/src/libsystemd-network/sd-dhcp6-lease.c b/src/libsystemd-network/sd-dhcp6-lease.c
index 41d6a5a..cbda7d8 100644
--- a/src/libsystemd-network/sd-dhcp6-lease.c
+++ b/src/libsystemd-network/sd-dhcp6-lease.c
@@ -105,6 +105,45 @@ int dhcp6_lease_get_iaid(sd_dhcp6_lease *lease, be32_t *iaid) {
         return 0;
 }
 
+int sd_dhcp6_lease_get_next_address(sd_dhcp6_lease *lease,
+                                    struct in6_addr *addr,
+                                    uint32_t *lifetime_preferred,
+                                    uint32_t *lifetime_valid) {
+        assert_return(lease, -EINVAL);
+        assert_return(addr, -EINVAL);
+        assert_return(lifetime_preferred, -EINVAL);
+        assert_return(lifetime_valid, -EINVAL);
+
+        if (!lease->addr_iter)
+                return -ENOMSG;
+
+        memcpy(addr, &lease->addr_iter->address, sizeof(struct in6_addr));
+        *lifetime_preferred = be32toh(lease->addr_iter->lifetime_preferred);
+        *lifetime_valid = be32toh(lease->addr_iter->lifetime_valid);
+
+        lease->addr_iter = lease->addr_iter->addresses_next;
+
+        return 0;
+}
+
+int sd_dhcp6_lease_get_first_address(sd_dhcp6_lease *lease,
+                                     struct in6_addr *addr,
+                                     uint32_t *lifetime_preferred,
+                                     uint32_t *lifetime_valid) {
+        assert_return(lease, -EINVAL);
+        assert_return(addr, -EINVAL);
+        assert_return(lifetime_preferred, -EINVAL);
+        assert_return(lifetime_valid, -EINVAL);
+
+        if (!lease->ia.addresses)
+                return -ENOMSG;
+
+        lease->addr_iter = lease->ia.addresses;
+
+        return sd_dhcp6_lease_get_next_address(lease, addr, lifetime_preferred,
+                                               lifetime_valid);
+}
+
 sd_dhcp6_lease *sd_dhcp6_lease_ref(sd_dhcp6_lease *lease) {
         if (lease)
                 assert_se(REFCNT_INC(lease->n_ref) >= 2);
diff --git a/src/systemd/sd-dhcp6-client.h b/src/systemd/sd-dhcp6-client.h
index 3aa1af9..aadb622 100644
--- a/src/systemd/sd-dhcp6-client.h
+++ b/src/systemd/sd-dhcp6-client.h
@@ -26,6 +26,8 @@
 
 #include "sd-event.h"
 
+#include "sd-dhcp6-lease.h"
+
 enum {
         DHCP6_EVENT_STOP                        = 0,
         DHCP6_EVENT_NO_STATEFUL_CONFIGURATION   = 10,
@@ -44,6 +46,8 @@ int sd_dhcp6_client_set_index(sd_dhcp6_client *client, int interface_index);
 int sd_dhcp6_client_set_mac(sd_dhcp6_client *client,
                             const struct ether_addr *mac_addr);
 
+int sd_dhcp6_client_get_lease(sd_dhcp6_client *client, sd_dhcp6_lease **ret);
+
 int sd_dhcp6_client_stop(sd_dhcp6_client *client);
 int sd_dhcp6_client_start(sd_dhcp6_client *client);
 int sd_dhcp6_client_attach_event(sd_dhcp6_client *client, sd_event *event,
diff --git a/src/systemd/sd-dhcp6-lease.h b/src/systemd/sd-dhcp6-lease.h
index 0b2765c..1126f1a 100644
--- a/src/systemd/sd-dhcp6-lease.h
+++ b/src/systemd/sd-dhcp6-lease.h
@@ -23,8 +23,19 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <netinet/in.h>
+
 typedef struct sd_dhcp6_lease sd_dhcp6_lease;
 
+int sd_dhcp6_lease_get_first_address(sd_dhcp6_lease *lease,
+                                     struct in6_addr *addr,
+                                     uint32_t *lifetime_preferred,
+                                     uint32_t *lifetime_valid);
+int sd_dhcp6_lease_get_next_address(sd_dhcp6_lease *lease,
+                                    struct in6_addr *addr,
+                                    uint32_t *lifetime_preferred,
+                                    uint32_t *lifetime_valid);
+
 sd_dhcp6_lease *sd_dhcp6_lease_ref(sd_dhcp6_lease *lease);
 sd_dhcp6_lease *sd_dhcp6_lease_unref(sd_dhcp6_lease *lease);
 
-- 
1.9.1