src/resolve/resolved-link.c

	resolved-link.c revision 2c27fbca2d88214bd305272308a370a962818f1e
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek/***
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  This file is part of systemd.
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  Copyright 2014 Lennart Poettering
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  systemd is free software; you can redistribute it and/or modify it
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  under the terms of the GNU Lesser General Public License as published by
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  the Free Software Foundation; either version 2.1 of the License, or
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  (at your option) any later version.
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  systemd is distributed in the hope that it will be useful, but
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  WITHOUT ANY WARRANTY; without even the implied warranty of
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  Lesser General Public License for more details.
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  You should have received a copy of the GNU Lesser General Public License
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek  along with systemd; If not, see <http://www.gnu.org/licenses/>.
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek***/
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek#include <net/if.h>
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek#include "sd-network.h"
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek#include "strv.h"
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek#include "missing.h"
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek#include "resolved-link.h"
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmekint link_new(Manager *m, Link **ret, int ifindex) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        _cleanup_(link_freep) Link *l = NULL;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        int r;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        assert(m);
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek        assert(ifindex > 0);
29fc0ddcd737af906986d4029579d4dfe838ba02Zbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        r = hashmap_ensure_allocated(&m->links, NULL, NULL);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (r < 0)
799a8f39d8eb9ea725e85a598c0f5dbd658c8ba7Zbigniew Jędrzejewski-Szmek                return r;
799a8f39d8eb9ea725e85a598c0f5dbd658c8ba7Zbigniew Jędrzejewski-Szmek
799a8f39d8eb9ea725e85a598c0f5dbd658c8ba7Zbigniew Jędrzejewski-Szmek        l = new0(Link, 1);
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek        if (!l)
29fc0ddcd737af906986d4029579d4dfe838ba02Zbigniew Jędrzejewski-Szmek                return -ENOMEM;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        l->ifindex = ifindex;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        r = hashmap_put(m->links, INT_TO_PTR(ifindex), l);
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek        if (r < 0)
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek                return r;
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek        l->manager = m;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        if (ret)
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                *ret = l;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        l = NULL;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        return 0;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek}
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-SzmekLink *link_free(Link *l) {
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        if (!l)
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                return NULL;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        while (l->addresses)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                link_address_free(l->addresses);
8847551bcbfa8265bae04f567bb1aadc7b480325Zbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (l->manager)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                hashmap_remove(l->manager->links, INT_TO_PTR(l->ifindex));
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        dns_scope_free(l->unicast_scope);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        dns_scope_free(l->llmnr_ipv4_scope);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        dns_scope_free(l->llmnr_ipv6_scope);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
8847551bcbfa8265bae04f567bb1aadc7b480325Zbigniew Jędrzejewski-Szmek        while (l->dns_servers)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                dns_server_free(l->dns_servers);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        free(l);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        return NULL;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek}
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmekstatic void link_allocate_scopes(Link *l) {
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        int r;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        assert(l);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        if (l->dns_servers) {
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                if (!l->unicast_scope) {
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                        r = dns_scope_new(l->manager, &l->unicast_scope, l, DNS_PROTOCOL_DNS, AF_UNSPEC);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                        if (r < 0)
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                                log_warning("Failed to allocate DNS scope: %s", strerror(-r));
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                }
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        } else
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                l->unicast_scope = dns_scope_free(l->unicast_scope);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        if (link_relevant(l, AF_INET) && l->manager->llmnr_support != SUPPORT_NO) {
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                if (!l->llmnr_ipv4_scope) {
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                        r = dns_scope_new(l->manager, &l->llmnr_ipv4_scope, l, DNS_PROTOCOL_LLMNR, AF_INET);
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                        if (r < 0)
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                                log_warning("Failed to allocate LLMNR IPv4 scope: %s", strerror(-r));
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                }
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek        } else
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                l->llmnr_ipv4_scope = dns_scope_free(l->llmnr_ipv4_scope);
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek        if (link_relevant(l, AF_INET6) && l->manager->llmnr_support != SUPPORT_NO) {
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                if (!l->llmnr_ipv6_scope) {
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                        r = dns_scope_new(l->manager, &l->llmnr_ipv6_scope, l, DNS_PROTOCOL_LLMNR, AF_INET6);
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                        if (r < 0)
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                                log_warning("Failed to allocate LLMNR IPv6 scope: %s", strerror(-r));
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                }
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek        } else
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                l->llmnr_ipv6_scope = dns_scope_free(l->llmnr_ipv6_scope);
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek}
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmekvoid link_add_rrs(Link *l, bool force_remove) {
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek        LinkAddress *a;
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek        LIST_FOREACH(addresses, a, l->addresses)
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek                link_address_add_rrs(a, force_remove);
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek}
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmekint link_update_rtnl(Link *l, sd_rtnl_message *m) {
d71839afd88589247d8dd42b2b09d024f521749dZbigniew Jędrzejewski-Szmek        const char *n = NULL;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        int r;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        assert(l);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        assert(m);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        r = sd_rtnl_message_link_get_flags(m, &l->flags);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        if (r < 0)
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                return r;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        sd_rtnl_message_read_u32(m, IFLA_MTU, &l->mtu);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        if (sd_rtnl_message_read_string(m, IFLA_IFNAME, &n) >= 0) {
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                strncpy(l->name, n, sizeof(l->name));
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                char_array_0(l->name);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        }
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        link_allocate_scopes(l);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        link_add_rrs(l, false);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        return 0;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek}
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmekstatic int link_update_dns_servers(Link *l) {
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        _cleanup_strv_free_ char **nameservers = NULL;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        char **nameserver;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        DnsServer *s, *nx;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        int r;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        assert(l);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        r = sd_network_get_dns(l->ifindex, &nameservers);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        if (r < 0)
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                goto clear;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        LIST_FOREACH(servers, s, l->dns_servers)
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                s->marked = true;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        STRV_FOREACH(nameserver, nameservers) {
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                union in_addr_union a;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                int family;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                r = in_addr_from_string_auto(*nameserver, &family, &a);
36d4739a68c3edafe4d145d525a26de4ef0b8e5aZbigniew Jędrzejewski-Szmek                if (r < 0)
36d4739a68c3edafe4d145d525a26de4ef0b8e5aZbigniew Jędrzejewski-Szmek                        goto clear;
36d4739a68c3edafe4d145d525a26de4ef0b8e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                s = link_find_dns_server(l, family, &a);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                if (s)
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                        s->marked = false;
36d4739a68c3edafe4d145d525a26de4ef0b8e5aZbigniew Jędrzejewski-Szmek                else {
36d4739a68c3edafe4d145d525a26de4ef0b8e5aZbigniew Jędrzejewski-Szmek                        r = dns_server_new(l->manager, NULL, DNS_SERVER_LINK, l, family, &a);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                        if (r < 0)
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                                goto clear;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                }
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        }
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        LIST_FOREACH_SAFE(servers, s, nx, l->dns_servers)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                if (s->marked)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        dns_server_free(s);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        return 0;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmekclear:
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        while (l->dns_servers)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                dns_server_free(l->dns_servers);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        return r;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek}
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmekint link_update_monitor(Link *l) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        assert(l);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        link_update_dns_servers(l);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        link_allocate_scopes(l);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        link_add_rrs(l, false);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        return 0;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek}
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmekbool link_relevant(Link *l, int family) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        _cleanup_free_ char *state = NULL;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        LinkAddress *a;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        assert(l);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        /* A link is relevant if it isn't a loopback or pointopoint
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek         * device, has a link beat, can do multicast and has at least
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek         * one relevant IP address */
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (l->flags & (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_DORMANT))
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                return false;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if ((l->flags & (IFF_UP|IFF_LOWER_UP|IFF_MULTICAST)) != (IFF_UP|IFF_LOWER_UP|IFF_MULTICAST))
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                return false;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        sd_network_get_link_operational_state(l->ifindex, &state);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (state && !STR_IN_SET(state, "unknown", "degraded", "routable"))
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                return false;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        LIST_FOREACH(addresses, a, l->addresses)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                if (a->family == family && link_address_relevant(a))
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        return true;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
b88a40a7e592e0a4a2e6e8eb1ed3721989ba5d0ePhilippe De Swert        return false;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek}
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-SzmekLinkAddress *link_find_address(Link *l, int family, const union in_addr_union *in_addr) {
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        LinkAddress *a;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        assert(l);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        LIST_FOREACH(addresses, a, l->addresses)
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                if (a->family == family && in_addr_equal(family, &a->in_addr, in_addr))
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        return a;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        return NULL;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek}
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-SzmekDnsServer* link_find_dns_server(Link *l, int family, const union in_addr_union *in_addr) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        DnsServer *s;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        assert(l);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        LIST_FOREACH(servers, s, l->dns_servers)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                if (s->family == family && in_addr_equal(family, &s->address, in_addr))
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        return s;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        return NULL;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek}
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-SzmekDnsServer* link_set_dns_server(Link *l, DnsServer *s) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        assert(l);
29fc0ddcd737af906986d4029579d4dfe838ba02Zbigniew Jędrzejewski-Szmek
799a8f39d8eb9ea725e85a598c0f5dbd658c8ba7Zbigniew Jędrzejewski-Szmek        if (l->current_dns_server == s)
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek                return s;
29fc0ddcd737af906986d4029579d4dfe838ba02Zbigniew Jędrzejewski-Szmek
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek        if (s) {
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek                _cleanup_free_ char *ip = NULL;
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek
8847551bcbfa8265bae04f567bb1aadc7b480325Zbigniew Jędrzejewski-Szmek                in_addr_to_string(s->family, &s->address, &ip);
8847551bcbfa8265bae04f567bb1aadc7b480325Zbigniew Jędrzejewski-Szmek                log_info("Switching to DNS server %s for interface %s.", strna(ip), l->name);
8847551bcbfa8265bae04f567bb1aadc7b480325Zbigniew Jędrzejewski-Szmek        }
8847551bcbfa8265bae04f567bb1aadc7b480325Zbigniew Jędrzejewski-Szmek
29fc0ddcd737af906986d4029579d4dfe838ba02Zbigniew Jędrzejewski-Szmek        l->current_dns_server = s;
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek        if (l->unicast_scope)
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek                dns_cache_flush(&l->unicast_scope->cache);
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek        return s;
7449bc1f34c206e3ff8e274cd74e2db950d492a1Zbigniew Jędrzejewski-Szmek}
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-SzmekDnsServer *link_get_dns_server(Link *l) {
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        assert(l);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        if (!l->current_dns_server)
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                link_set_dns_server(l, l->dns_servers);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        return l->current_dns_server;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek}
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmekvoid link_next_dns_server(Link *l) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        assert(l);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (!l->current_dns_server)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                return;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (l->current_dns_server->servers_next) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                link_set_dns_server(l, l->current_dns_server->servers_next);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                return;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        link_set_dns_server(l, l->dns_servers);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek}
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmekint link_address_new(Link *l, LinkAddress **ret, int family, const union in_addr_union *in_addr) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        LinkAddress *a;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        assert(l);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        assert(in_addr);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        a = new0(LinkAddress, 1);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (!a)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                return -ENOMEM;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        a->family = family;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        a->in_addr = *in_addr;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        a->link = l;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        LIST_PREPEND(addresses, l->addresses, a);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (ret)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                *ret = a;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        return 0;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek}
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-SzmekLinkAddress *link_address_free(LinkAddress *a) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (!a)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                return NULL;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (a->link) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                LIST_REMOVE(addresses, a->link->addresses, a);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                if (a->llmnr_address_rr) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        if (a->family == AF_INET && a->link->llmnr_ipv4_scope)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                dns_zone_remove_rr(&a->link->llmnr_ipv4_scope->zone, a->llmnr_address_rr);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                        else if (a->family == AF_INET6 && a->link->llmnr_ipv6_scope)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                dns_zone_remove_rr(&a->link->llmnr_ipv6_scope->zone, a->llmnr_address_rr);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                if (a->llmnr_ptr_rr) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        if (a->family == AF_INET && a->link->llmnr_ipv4_scope)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                dns_zone_remove_rr(&a->link->llmnr_ipv4_scope->zone, a->llmnr_ptr_rr);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        else if (a->family == AF_INET6 && a->link->llmnr_ipv6_scope)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                dns_zone_remove_rr(&a->link->llmnr_ipv6_scope->zone, a->llmnr_ptr_rr);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek        dns_resource_record_unref(a->llmnr_address_rr);
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek        dns_resource_record_unref(a->llmnr_ptr_rr);
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek        free(a);
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek        return NULL;
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek}
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmekvoid link_address_add_rrs(LinkAddress *a, bool force_remove) {
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek        int r;
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek
8201af08fa09c2bd0f005fbe262f27e2c5bd2d86Zbigniew Jędrzejewski-Szmek        assert(a);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (a->family == AF_INET) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                if (!force_remove &&
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                    link_address_relevant(a) &&
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                    a->link->llmnr_ipv4_scope &&
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                    a->link->manager->llmnr_support == SUPPORT_YES) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        if (!a->link->manager->host_ipv4_key) {
e1ad6e245dcf63faa8f183063eb97678f4f9ac94Lukas Nykryn                                a->link->manager->host_ipv4_key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_A, a->link->manager->hostname);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                if (!a->link->manager->host_ipv4_key) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                        r = -ENOMEM;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                        goto fail;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        if (!a->llmnr_address_rr) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                a->llmnr_address_rr = dns_resource_record_new(a->link->manager->host_ipv4_key);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                if (!a->llmnr_address_rr) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                        r = -ENOMEM;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                        goto fail;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                                a->llmnr_address_rr->a.in_addr = a->in_addr.in;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                                a->llmnr_address_rr->ttl = LLMNR_DEFAULT_TTL;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                        }
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                        if (!a->llmnr_ptr_rr) {
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                                r = dns_resource_record_new_reverse(&a->llmnr_ptr_rr, a->family, &a->in_addr, a->link->manager->hostname);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                                if (r < 0)
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                                        goto fail;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                                a->llmnr_ptr_rr->ttl = LLMNR_DEFAULT_TTL;
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                        }
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        r = dns_zone_put(&a->link->llmnr_ipv4_scope->zone, a->link->llmnr_ipv4_scope, a->llmnr_address_rr, true);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                        if (r < 0)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                log_warning("Failed tp add A record to LLMNR zone: %s", strerror(-r));
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        r = dns_zone_put(&a->link->llmnr_ipv4_scope->zone, a->link->llmnr_ipv4_scope, a->llmnr_ptr_rr, false);
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                        if (r < 0)
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                log_warning("Failed tp add IPv6 PTR record to LLMNR zone: %s", strerror(-r));
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                } else {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                        if (a->llmnr_address_rr) {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                if (a->link->llmnr_ipv4_scope)
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                        dns_zone_remove_rr(&a->link->llmnr_ipv4_scope->zone, a->llmnr_address_rr);
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                a->llmnr_address_rr = dns_resource_record_unref(a->llmnr_address_rr);
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                        }
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                        if (a->llmnr_ptr_rr) {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                if (a->link->llmnr_ipv4_scope)
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                        dns_zone_remove_rr(&a->link->llmnr_ipv4_scope->zone, a->llmnr_ptr_rr);
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                a->llmnr_ptr_rr = dns_resource_record_unref(a->llmnr_ptr_rr);
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                        }
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                }
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek        }
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek        if (a->family == AF_INET6) {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                if (!force_remove &&
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                    link_address_relevant(a) &&
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                    a->link->llmnr_ipv6_scope &&
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                    a->link->manager->llmnr_support == SUPPORT_YES) {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                        if (!a->link->manager->host_ipv6_key) {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                a->link->manager->host_ipv6_key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_AAAA, a->link->manager->hostname);
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                if (!a->link->manager->host_ipv6_key) {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                        r = -ENOMEM;
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                        goto fail;
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                }
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                        }
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                        if (!a->llmnr_address_rr) {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                a->llmnr_address_rr = dns_resource_record_new(a->link->manager->host_ipv6_key);
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                if (!a->llmnr_address_rr) {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                        r = -ENOMEM;
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                                        goto fail;
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                                }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                                a->llmnr_address_rr->aaaa.in6_addr = a->in_addr.in6;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                a->llmnr_address_rr->ttl = LLMNR_DEFAULT_TTL;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        if (!a->llmnr_ptr_rr) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                r = dns_resource_record_new_reverse(&a->llmnr_ptr_rr, a->family, &a->in_addr, a->link->manager->hostname);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                if (r < 0)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                                        goto fail;
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                                a->llmnr_ptr_rr->ttl = LLMNR_DEFAULT_TTL;
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                        }
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                        r = dns_zone_put(&a->link->llmnr_ipv6_scope->zone, a->link->llmnr_ipv6_scope, a->llmnr_address_rr, true);
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                        if (r < 0)
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                                log_warning("Failed to add AAAA record to LLMNR zone: %s", strerror(-r));
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                        r = dns_zone_put(&a->link->llmnr_ipv6_scope->zone, a->link->llmnr_ipv6_scope, a->llmnr_ptr_rr, false);
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                        if (r < 0)
5bc891206dd8eb4e4df58f502b0184b8426caf22Zbigniew Jędrzejewski-Szmek                                log_warning("Failed to add IPv6 PTR record to LLMNR zone: %s", strerror(-r));
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                } else {
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                        if (a->llmnr_address_rr) {
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                                if (a->link->llmnr_ipv6_scope)
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                                        dns_zone_remove_rr(&a->link->llmnr_ipv6_scope->zone, a->llmnr_address_rr);
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                                a->llmnr_address_rr = dns_resource_record_unref(a->llmnr_address_rr);
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek                        }
50a0b0717563d08c027a16a896bff8d7754eab9eZbigniew Jędrzejewski-Szmek
5bc891206dd8eb4e4df58f502b0184b8426caf22Zbigniew Jędrzejewski-Szmek                        if (a->llmnr_ptr_rr) {
5bc891206dd8eb4e4df58f502b0184b8426caf22Zbigniew Jędrzejewski-Szmek                                if (a->link->llmnr_ipv6_scope)
5bc891206dd8eb4e4df58f502b0184b8426caf22Zbigniew Jędrzejewski-Szmek                                        dns_zone_remove_rr(&a->link->llmnr_ipv6_scope->zone, a->llmnr_ptr_rr);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek                                a->llmnr_ptr_rr = dns_resource_record_unref(a->llmnr_ptr_rr);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                        }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        }
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        return;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmekfail:
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek        log_debug("Failed to update address RRs: %s", strerror(-r));
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek}
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmekint link_address_update_rtnl(LinkAddress *a, sd_rtnl_message *m) {
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek        int r;
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek        assert(a);
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        assert(m);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        r = sd_rtnl_message_addr_get_flags(m, &a->flags);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (r < 0)
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek                return r;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        sd_rtnl_message_addr_get_scope(m, &a->scope);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        link_allocate_scopes(a->link);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek        link_add_rrs(a->link, false);
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek
722b6795655149a68277b3cffeba711e1d440e5aZbigniew Jędrzejewski-Szmek        return 0;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek}
5bc891206dd8eb4e4df58f502b0184b8426caf22Zbigniew Jędrzejewski-Szmek
5bc891206dd8eb4e4df58f502b0184b8426caf22Zbigniew Jędrzejewski-Szmekbool link_address_relevant(LinkAddress *a) {
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        assert(a);
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        if (a->flags & IFA_F_DEPRECATED)
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek                return false;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek        if (IN_SET(a->scope, RT_SCOPE_HOST, RT_SCOPE_NOWHERE))
a3152e7655231b94fa7b9582906fb86ab00b9c99Zbigniew Jędrzejewski-Szmek                return false;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek        return true;
3d090cc6f34e5970765dd1e7ee5e648a056d180dZbigniew Jędrzejewski-Szmek}
eacbb4d33e2bb5c54311544851140efe3dd0f774Zbigniew Jędrzejewski-Szmek