summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorPatrik Flykt <patrik.flykt@linux.intel.com>2015-04-02 10:50:16 +0300
committerPatrik Flykt <patrik.flykt@linux.intel.com>2015-08-21 11:23:21 +0300
commit7bd8e95d44977833d0de3fc4e893eb3bc84351d6 (patch)
treeab6971738361f78113e464c2427e00d2b6466bc4
parentf96ccab7e0e6cb96851010682abbc1ac0909264d (diff)
sd-dhcp6: Add support for DHCPv6 DNS Recursive Name Server option
Support DHCPv6 DNS server option as specified in RFC 3646. This option contains a list of IPv6 DNS server addresses.
-rw-r--r--src/libsystemd-network/dhcp6-lease-internal.h7
-rw-r--r--src/libsystemd-network/sd-dhcp6-client.c9
-rw-r--r--src/libsystemd-network/sd-dhcp6-lease.c37
-rw-r--r--src/systemd/sd-dhcp6-lease.h4
4 files changed, 54 insertions, 3 deletions
diff --git a/src/libsystemd-network/dhcp6-lease-internal.h b/src/libsystemd-network/dhcp6-lease-internal.h
index 109e0f4f21..0dad0a5132 100644
--- a/src/libsystemd-network/dhcp6-lease-internal.h
+++ b/src/libsystemd-network/dhcp6-lease-internal.h
@@ -6,7 +6,7 @@
This file is part of systemd.
Copyright (C) 2014 Tom Gundersen
- Copyright (C) 2014 Intel Corporation. All rights reserved.
+ Copyright (C) 2014-2015 Intel Corporation. All rights reserved.
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
@@ -40,6 +40,10 @@ struct sd_dhcp6_lease {
DHCP6IA ia;
DHCP6Address *addr_iter;
+
+ struct in6_addr *dns;
+ size_t dns_count;
+ size_t dns_allocated;
};
int dhcp6_lease_clear_timers(DHCP6IA *ia);
@@ -56,6 +60,7 @@ int dhcp6_lease_get_rapid_commit(sd_dhcp6_lease *lease, bool *rapid_commit);
int dhcp6_lease_get_iaid(sd_dhcp6_lease *lease, be32_t *iaid);
+int dhcp6_lease_set_dns(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen);
int dhcp6_lease_new(sd_dhcp6_lease **ret);
DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp6_lease*, sd_dhcp6_lease_unref);
diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index a88a6f4b4c..627ddb63c6 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -3,7 +3,7 @@
/***
This file is part of systemd.
- Copyright (C) 2014 Intel Corporation. All rights reserved.
+ Copyright (C) 2014-2015 Intel Corporation. All rights reserved.
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
@@ -753,6 +753,13 @@ static int client_parse_message(sd_dhcp6_client *client,
return r;
break;
+
+ case DHCP6_OPTION_DNS_SERVERS:
+ r = dhcp6_lease_set_dns(lease, optval, optlen);
+ if (r < 0)
+ return r;
+
+ break;
}
}
diff --git a/src/libsystemd-network/sd-dhcp6-lease.c b/src/libsystemd-network/sd-dhcp6-lease.c
index 2442269a3f..55cefdeec9 100644
--- a/src/libsystemd-network/sd-dhcp6-lease.c
+++ b/src/libsystemd-network/sd-dhcp6-lease.c
@@ -173,6 +173,42 @@ void sd_dhcp6_lease_reset_address_iter(sd_dhcp6_lease *lease) {
lease->addr_iter = lease->ia.addresses;
}
+int dhcp6_lease_set_dns(sd_dhcp6_lease *lease, uint8_t *optval, size_t optlen) {
+ int r;
+
+ assert_return(lease, -EINVAL);
+ assert_return(optval, -EINVAL);
+
+ if (!optlen)
+ return 0;
+
+ r = dhcp6_option_parse_ip6addrs(optval, optlen, &lease->dns,
+ lease->dns_count,
+ &lease->dns_allocated);
+ if (r < 0) {
+ log_dhcp6_client(client, "Invalid DNS server option: %s",
+ strerror(-r));
+
+ return r;
+ }
+
+ lease->dns_count = r;
+
+ return 0;
+}
+
+int sd_dhcp6_lease_get_dns(sd_dhcp6_lease *lease, struct in6_addr **addrs) {
+ assert_return(lease, -EINVAL);
+ assert_return(addrs, -EINVAL);
+
+ if (lease->dns_count) {
+ *addrs = lease->dns;
+ return lease->dns_count;
+ }
+
+ return -ENOENT;
+}
+
sd_dhcp6_lease *sd_dhcp6_lease_ref(sd_dhcp6_lease *lease) {
if (lease)
assert_se(REFCNT_INC(lease->n_ref) >= 2);
@@ -185,6 +221,7 @@ sd_dhcp6_lease *sd_dhcp6_lease_unref(sd_dhcp6_lease *lease) {
free(lease->serverid);
dhcp6_lease_free_ia(&lease->ia);
+ free(lease->dns);
free(lease);
}
diff --git a/src/systemd/sd-dhcp6-lease.h b/src/systemd/sd-dhcp6-lease.h
index 716d7678f1..c98026bd0f 100644
--- a/src/systemd/sd-dhcp6-lease.h
+++ b/src/systemd/sd-dhcp6-lease.h
@@ -7,7 +7,7 @@
This file is part of systemd.
Copyright (C) 2014 Tom Gundersen
- Copyright (C) 2014 Intel Corporation. All rights reserved.
+ Copyright (C) 2014-2015 Intel Corporation. All rights reserved.
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
@@ -33,6 +33,8 @@ int sd_dhcp6_lease_get_address(sd_dhcp6_lease *lease,
uint32_t *lifetime_preferred,
uint32_t *lifetime_valid);
+int sd_dhcp6_lease_get_dns(sd_dhcp6_lease *lease, struct in6_addr **addrs);
+
sd_dhcp6_lease *sd_dhcp6_lease_ref(sd_dhcp6_lease *lease);
sd_dhcp6_lease *sd_dhcp6_lease_unref(sd_dhcp6_lease *lease);