#include <net/if.h>

#include <netinet/in.h>

#include <sys/capability.h>

#include "alloc-util.h"

#include "bus-common-errors.h"

#include "bus-get-properties.h"

#include "bus-message-util.h"

#include "bus-polkit.h"

#include "log-link.h"

#include "parse-util.h"

#include "resolve-util.h"

#include "resolved-bus.h"

#include "resolved-link-bus.h"

#include "resolved-resolv-conf.h"

#include "socket-netlink.h"

#include "stdio-util.h"

#include "strv.h"

#include "user-util.h"

static BUS_DEFINE_PROPERTY_GET(property_get_dnssec_supported, "b", Link, link_dnssec_supported);

static BUS_DEFINE_PROPERTY_GET2(property_get_dnssec_mode, "s", Link, link_get_dnssec_mode, dnssec_mode_to_string);

static int property_get_dns_over_tls_mode(

sd_bus_error *error) {

Link *l = userdata;

assert(reply);

assert(l);

return sd_bus_message_append(reply, "s", dns_over_tls_mode_to_string(link_get_dns_over_tls_mode(l)));

}

static int property_get_dns_internal(

bool extended) {

Link *l = userdata;

int r;

assert(reply);

assert(l);

r = sd_bus_message_open_container(reply, 'a', extended ? "(iayqs)" : "(iay)");

if (r < 0)

return r;

LIST_FOREACH(servers, s, l->dns_servers) {

r = bus_dns_server_append(reply, s, false, extended);

if (r < 0)

return r;

}

return sd_bus_message_close_container(reply);

}

static int property_get_dns(

sd_bus_error *error) {

return property_get_dns_internal(bus, path, interface, property, reply, userdata, error, false);

}

static int property_get_dns_ex(

sd_bus_error *error) {

return property_get_dns_internal(bus, path, interface, property, reply, userdata, error, true);

}

static int property_get_current_dns_server_internal(

bool extended) {

DnsServer *s;

assert(reply);

assert(userdata);

s = *(DnsServer **) userdata;

return bus_dns_server_append(reply, s, false, extended);

}

static int property_get_current_dns_server(

sd_bus_error *error) {

return property_get_current_dns_server_internal(bus, path, interface, property, reply, userdata, error, false);

}

static int property_get_current_dns_server_ex(

sd_bus_error *error) {

return property_get_current_dns_server_internal(bus, path, interface, property, reply, userdata, error, true);

}

static int property_get_domains(

sd_bus_error *error) {

Link *l = userdata;

int r;

assert(reply);

assert(l);

r = sd_bus_message_open_container(reply, 'a', "(sb)");

if (r < 0)

return r;

LIST_FOREACH(domains, d, l->search_domains) {

r = sd_bus_message_append(reply, "(sb)", d->name, d->route_only);

if (r < 0)

return r;

}

return sd_bus_message_close_container(reply);

}

static int property_get_default_route(

sd_bus_error *error) {

Link *l = userdata;

assert(reply);

assert(l);

/* Return what is configured, if there's something configured */

if (l->default_route >= 0)

return sd_bus_message_append(reply, "b", l->default_route);

/* Otherwise report what is in effect */

if (l->unicast_scope)

return sd_bus_message_append(reply, "b", dns_scope_is_default_route(l->unicast_scope));

return sd_bus_message_append(reply, "b", false);

}

static int property_get_scopes_mask(

sd_bus_error *error) {

Link *l = userdata;

uint64_t mask;

assert(reply);

assert(l);

mask = (l->unicast_scope ? SD_RESOLVED_DNS : 0) |

(l->llmnr_ipv4_scope ? SD_RESOLVED_LLMNR_IPV4 : 0) |

(l->llmnr_ipv6_scope ? SD_RESOLVED_LLMNR_IPV6 : 0) |

(l->mdns_ipv4_scope ? SD_RESOLVED_MDNS_IPV4 : 0) |

(l->mdns_ipv6_scope ? SD_RESOLVED_MDNS_IPV6 : 0);

return sd_bus_message_append(reply, "t", mask);

}

static int property_get_ntas(

sd_bus_error *error) {

Link *l = userdata;

const char *name;

int r;

assert(reply);

assert(l);

r = sd_bus_message_open_container(reply, 'a', "s");

if (r < 0)

return r;

SET_FOREACH(name, l->dnssec_negative_trust_anchors) {

r = sd_bus_message_append(reply, "s", name);

if (r < 0)

return r;

}

return sd_bus_message_close_container(reply);

}

static int verify_unmanaged_link(Link *l, sd_bus_error *error) {

assert(l);

if (l->flags & IFF_LOOPBACK)

return sd_bus_error_setf(error, BUS_ERROR_LINK_BUSY, "Link %s is loopback device.", l->ifname);

if (l->is_managed)

return sd_bus_error_setf(error, BUS_ERROR_LINK_BUSY, "Link %s is managed.", l->ifname);

return 0;

}

static int bus_link_method_set_dns_servers_internal(sd_bus_message *message, void *userdata, sd_bus_error *error, bool extended) {

_cleanup_free_ char *j = NULL;

struct in_addr_full **dns;

bool changed = false;

Link *l = userdata;

size_t n;

int r;

assert(message);

assert(l);

r = verify_unmanaged_link(l, error);

if (r < 0)

return r;

r = bus_message_read_dns_servers(message, error, extended, &dns, &n);

if (r < 0)

return r;

r = bus_verify_polkit_async(message, CAP_NET_ADMIN,

"org.freedesktop.resolve1.set-dns-servers",

NULL, true, UID_INVALID,

&l->manager->polkit_registry, error);

if (r < 0)

goto finalize;

if (r == 0) {

r = 1; /* Polkit will call us back */

goto finalize;

}

for (size_t i = 0; i < n; i++) {

const char *s;

s = in_addr_full_to_string(dns[i]);

if (!s) {

r = -ENOMEM;

goto finalize;

}

if (!strextend_with_separator(&j, ", ", s)) {

r = -ENOMEM;

goto finalize;

}

}

bus_client_log(message, "DNS server change");

dns_server_mark_all(l->dns_servers);

for (size_t i = 0; i < n; i++) {

DnsServer *s;

s = dns_server_find(l->dns_servers, dns[i]->family, &dns[i]->address, dns[i]->port, 0, dns[i]->server_name);

if (s)

dns_server_move_back_and_unmark(s);

else {

r = dns_server_new(l->manager, NULL, DNS_SERVER_LINK, l, dns[i]->family, &dns[i]->address, dns[i]->port, 0, dns[i]->server_name);

if (r < 0) {

dns_server_unlink_all(l->dns_servers);

goto finalize;

}

changed = true;

}

}

changed = dns_server_unlink_marked(l->dns_servers) || changed;

if (changed) {

link_allocate_scopes(l);

(void) link_save_user(l);

(void) manager_write_resolv_conf(l->manager);

(void) manager_send_changed(l->manager, "DNS");

if (j)

log_link_info(l, "Bus client set DNS server list to: %s", j);

else

log_link_info(l, "Bus client reset DNS server list.");

}

r = sd_bus_reply_method_return(message, NULL);

finalize:

for (size_t i = 0; i < n; i++)

in_addr_full_free(dns[i]);

free(dns);

return r;

}

int bus_link_method_set_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) {

return bus_link_method_set_dns_servers_internal(message, userdata, error, false);

}

int bus_link_method_set_dns_servers_ex(sd_bus_message *message, void *userdata, sd_bus_error *error) {

return bus_link_method_set_dns_servers_internal(message, userdata, error, true);

}

int bus_link_method_set_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) {

_cleanup_free_ char *j = NULL;

Link *l = userdata;

bool changed = false;

int r;

assert(message);

assert(l);

r = verify_unmanaged_link(l, error);

if (r < 0)

return r;

r = sd_bus_message_enter_container(message, 'a', "(sb)");

if (r < 0)

return r;

for (;;) {

_cleanup_free_ char *prefixed = NULL;

const char *name;

int route_only;

r = sd_bus_message_read(message, "(sb)", &name, &route_only);

if (r < 0)

return r;

if (r == 0)

break;

r = dns_name_is_valid(name);

if (r < 0)

return r;

if (r == 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid search domain %s", name);

if (!route_only && dns_name_is_root(name))

return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Root domain is not suitable as search domain");

if (route_only) {

prefixed = strjoin("~", name);

if (!prefixed)

return -ENOMEM;

name = prefixed;

}

if (!strextend_with_separator(&j, ", ", name))

return -ENOMEM;

}

r = sd_bus_message_rewind(message, false);

if (r < 0)

return r;

r = bus_verify_polkit_async(message, CAP_NET_ADMIN,

"org.freedesktop.resolve1.set-domains",

NULL, true, UID_INVALID,

&l->manager->polkit_registry, error);

if (r < 0)

return r;

if (r == 0)

return 1; /* Polkit will call us back */

bus_client_log(message, "dns domains change");

dns_search_domain_mark_all(l->search_domains);

for (;;) {

DnsSearchDomain *d;

const char *name;

int route_only;

r = sd_bus_message_read(message, "(sb)", &name, &route_only);

if (r < 0)

goto clear;

if (r == 0)

break;

r = dns_search_domain_find(l->search_domains, name, &d);

if (r < 0)

goto clear;

if (r > 0)

dns_search_domain_move_back_and_unmark(d);

else {

r = dns_search_domain_new(l->manager, &d, DNS_SEARCH_DOMAIN_LINK, l, name);

if (r < 0)

goto clear;

changed = true;

}

d->route_only = route_only;

}

r = sd_bus_message_exit_container(message);

if (r < 0)

goto clear;

changed = dns_search_domain_unlink_marked(l->search_domains) || changed;

if (changed) {

(void) link_save_user(l);

(void) manager_write_resolv_conf(l->manager);

if (j)

log_link_info(l, "Bus client set search domain list to: %s", j);

else

log_link_info(l, "Bus client reset search domain list.");

}

return sd_bus_reply_method_return(message, NULL);

clear:

dns_search_domain_unlink_all(l->search_domains);

return r;

}

int bus_link_method_set_default_route(sd_bus_message *message, void *userdata, sd_bus_error *error) {

Link *l = userdata;

int r, b;

assert(message);

assert(l);

r = verify_unmanaged_link(l, error);

if (r < 0)

return r;

r = sd_bus_message_read(message, "b", &b);

if (r < 0)

return r;

r = bus_verify_polkit_async(message, CAP_NET_ADMIN,

"org.freedesktop.resolve1.set-default-route",

NULL, true, UID_INVALID,

&l->manager->polkit_registry, error);

if (r < 0)

return r;

if (r == 0)

return 1; /* Polkit will call us back */

bus_client_log(message, "dns default route change");

if (l->default_route != b) {

l->default_route = b;

(void) link_save_user(l);

(void) manager_write_resolv_conf(l->manager);

log_link_info(l, "Bus client set default route setting: %s", yes_no(b));

}

return sd_bus_reply_method_return(message, NULL);

}

int bus_link_method_set_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) {

Link *l = userdata;

ResolveSupport mode;

const char *llmnr;

int r;

assert(message);

assert(l);

r = verify_unmanaged_link(l, error);

if (r < 0)

return r;

r = sd_bus_message_read(message, "s", &llmnr);

if (r < 0)

return r;

if (isempty(llmnr))

mode = RESOLVE_SUPPORT_YES;

else {

mode = resolve_support_from_string(llmnr);

if (mode < 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid LLMNR setting: %s", llmnr);

}

r = bus_verify_polkit_async(message, CAP_NET_ADMIN,

"org.freedesktop.resolve1.set-llmnr",

NULL, true, UID_INVALID,

&l->manager->polkit_registry, error);

if (r < 0)

return r;

if (r == 0)

return 1; /* Polkit will call us back */

bus_client_log(message, "LLMNR change");

if (l->llmnr_support != mode) {

l->llmnr_support = mode;

link_allocate_scopes(l);

link_add_rrs(l, false);

(void) link_save_user(l);

log_link_info(l, "Bus client set LLMNR setting: %s", resolve_support_to_string(mode));

}

return sd_bus_reply_method_return(message, NULL);

}

int bus_link_method_set_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) {

Link *l = userdata;

ResolveSupport mode;

const char *mdns;

int r;

assert(message);

assert(l);

r = verify_unmanaged_link(l, error);

if (r < 0)

return r;

r = sd_bus_message_read(message, "s", &mdns);

if (r < 0)

return r;

if (isempty(mdns))

mode = RESOLVE_SUPPORT_NO;

else {

mode = resolve_support_from_string(mdns);

if (mode < 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid MulticastDNS setting: %s", mdns);

}

r = bus_verify_polkit_async(message, CAP_NET_ADMIN,

"org.freedesktop.resolve1.set-mdns",

NULL, true, UID_INVALID,

&l->manager->polkit_registry, error);

if (r < 0)

return r;

if (r == 0)

return 1; /* Polkit will call us back */

bus_client_log(message, "mDNS change");

if (l->mdns_support != mode) {

l->mdns_support = mode;

link_allocate_scopes(l);

link_add_rrs(l, false);

(void) link_save_user(l);

log_link_info(l, "Bus client set MulticastDNS setting: %s", resolve_support_to_string(mode));

}

return sd_bus_reply_method_return(message, NULL);

}

int bus_link_method_set_dns_over_tls(sd_bus_message *message, void *userdata, sd_bus_error *error) {

Link *l = userdata;

const char *dns_over_tls;

DnsOverTlsMode mode;

int r;

assert(message);

assert(l);

r = verify_unmanaged_link(l, error);

if (r < 0)

return r;

r = sd_bus_message_read(message, "s", &dns_over_tls);

if (r < 0)

return r;

if (isempty(dns_over_tls))

mode = _DNS_OVER_TLS_MODE_INVALID;

else {

mode = dns_over_tls_mode_from_string(dns_over_tls);

if (mode < 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid DNSOverTLS setting: %s", dns_over_tls);

}

r = bus_verify_polkit_async(message, CAP_NET_ADMIN,

"org.freedesktop.resolve1.set-dns-over-tls",

NULL, true, UID_INVALID,

&l->manager->polkit_registry, error);

if (r < 0)

return r;

if (r == 0)

return 1; /* Polkit will call us back */

bus_client_log(message, "D-o-T change");

if (l->dns_over_tls_mode != mode) {

link_set_dns_over_tls_mode(l, mode);

(void) link_save_user(l);

log_link_info(l, "Bus client set DNSOverTLS setting: %s",

mode < 0 ? "default" : dns_over_tls_mode_to_string(mode));

}

return sd_bus_reply_method_return(message, NULL);

}

int bus_link_method_set_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) {

Link *l = userdata;

const char *dnssec;

DnssecMode mode;

int r;

assert(message);

assert(l);

r = verify_unmanaged_link(l, error);

if (r < 0)

return r;

r = sd_bus_message_read(message, "s", &dnssec);

if (r < 0)

return r;

if (isempty(dnssec))

mode = _DNSSEC_MODE_INVALID;

else {

mode = dnssec_mode_from_string(dnssec);

if (mode < 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid DNSSEC setting: %s", dnssec);

}

r = bus_verify_polkit_async(message, CAP_NET_ADMIN,

"org.freedesktop.resolve1.set-dnssec",

NULL, true, UID_INVALID,

&l->manager->polkit_registry, error);

if (r < 0)

return r;

if (r == 0)

return 1; /* Polkit will call us back */

bus_client_log(message, "DNSSEC change");

if (l->dnssec_mode != mode) {

link_set_dnssec_mode(l, mode);

(void) link_save_user(l);

log_link_info(l, "Bus client set DNSSEC setting: %s",

mode < 0 ? "default" : dnssec_mode_to_string(mode));

}

return sd_bus_reply_method_return(message, NULL);

}

int bus_link_method_set_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) {

_cleanup_set_free_free_ Set *ns = NULL;

_cleanup_strv_free_ char **ntas = NULL;

_cleanup_free_ char *j = NULL;

Link *l = userdata;

int r;

assert(message);

assert(l);

r = verify_unmanaged_link(l, error);

if (r < 0)

return r;

ns = set_new(&dns_name_hash_ops);

if (!ns)

return -ENOMEM;

r = sd_bus_message_read_strv(message, &ntas);

if (r < 0)

return r;

STRV_FOREACH(i, ntas) {

r = dns_name_is_valid(*i);

if (r < 0)

return r;

if (r == 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,

"Invalid negative trust anchor domain: %s", *i);

r = set_put_strdup(&ns, *i);

if (r < 0)

return r;

if (!strextend_with_separator(&j, ", ", *i))

return -ENOMEM;

}

r = bus_verify_polkit_async(message, CAP_NET_ADMIN,

"org.freedesktop.resolve1.set-dnssec-negative-trust-anchors",

NULL, true, UID_INVALID,

&l->manager->polkit_registry, error);

if (r < 0)

return r;

if (r == 0)

return 1; /* Polkit will call us back */

bus_client_log(message, "DNSSEC NTA change");

if (!set_equal(ns, l->dnssec_negative_trust_anchors)) {

set_free_free(l->dnssec_negative_trust_anchors);

l->dnssec_negative_trust_anchors = TAKE_PTR(ns);

(void) link_save_user(l);

if (j)

log_link_info(l, "Bus client set NTA list to: %s", j);

else

log_link_info(l, "Bus client reset NTA list.");

}

return sd_bus_reply_method_return(message, NULL);

}

int bus_link_method_revert(sd_bus_message *message, void *userdata, sd_bus_error *error) {

Link *l = userdata;

int r;

assert(message);

assert(l);

r = verify_unmanaged_link(l, error);

if (r < 0)

return r;

r = bus_verify_polkit_async(message, CAP_NET_ADMIN,

"org.freedesktop.resolve1.revert",

NULL, true, UID_INVALID,

&l->manager->polkit_registry, error);

if (r < 0)

return r;

if (r == 0)

return 1; /* Polkit will call us back */

bus_client_log(message, "revert");

link_flush_settings(l);

link_allocate_scopes(l);

link_add_rrs(l, false);

(void) link_save_user(l);

(void) manager_write_resolv_conf(l->manager);

(void) manager_send_changed(l->manager, "DNS");

return sd_bus_reply_method_return(message, NULL);

}

static int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {

_cleanup_free_ char *e = NULL;

Manager *m = userdata;

Link *link;

int ifindex, r;

assert(bus);

assert(path);

assert(interface);

assert(found);

assert(m);

r = sd_bus_path_decode(path, "/org/freedesktop/resolve1/link", &e);

if (r <= 0)

return 0;

ifindex = parse_ifindex(e);

if (ifindex < 0)

return 0;

link = hashmap_get(m->links, INT_TO_PTR(ifindex));

if (!link)

return 0;

*found = link;

return 1;

}

char *link_bus_path(const Link *link) {

char *p, ifindex[DECIMAL_STR_MAX(link->ifindex)];

int r;

assert(link);

xsprintf(ifindex, "%i", link->ifindex);

r = sd_bus_path_encode("/org/freedesktop/resolve1/link", ifindex, &p);

if (r < 0)

return NULL;

return p;

}

static int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {

_cleanup_strv_free_ char **l = NULL;

Manager *m = userdata;

Link *link;

unsigned c = 0;

assert(bus);

assert(path);

assert(m);

assert(nodes);

l = new0(char*, hashmap_size(m->links) + 1);

if (!l)

return -ENOMEM;

HASHMAP_FOREACH(link, m->links) {

char *p;

p = link_bus_path(link);

if (!p)

return -ENOMEM;

l[c++] = p;

}

l[c] = NULL;

*nodes = TAKE_PTR(l);

return 1;

}

static const sd_bus_vtable link_vtable[] = {

SD_BUS_VTABLE_START(0),

SD_BUS_PROPERTY("ScopesMask", "t", property_get_scopes_mask, 0, 0),

SD_BUS_PROPERTY("DNS", "a(iay)", property_get_dns, 0, 0),

SD_BUS_PROPERTY("DNSEx", "a(iayqs)", property_get_dns_ex, 0, 0),

SD_BUS_PROPERTY("CurrentDNSServer", "(iay)", property_get_current_dns_server, offsetof(Link, current_dns_server), 0),

SD_BUS_PROPERTY("CurrentDNSServerEx", "(iayqs)", property_get_current_dns_server_ex, offsetof(Link, current_dns_server), 0),

SD_BUS_PROPERTY("Domains", "a(sb)", property_get_domains, 0, 0),

SD_BUS_PROPERTY("DefaultRoute", "b", property_get_default_route, 0, 0),

SD_BUS_PROPERTY("LLMNR", "s", bus_property_get_resolve_support, offsetof(Link, llmnr_support), 0),

SD_BUS_PROPERTY("MulticastDNS", "s", bus_property_get_resolve_support, offsetof(Link, mdns_support), 0),

SD_BUS_PROPERTY("DNSOverTLS", "s", property_get_dns_over_tls_mode, 0, 0),

SD_BUS_PROPERTY("DNSSEC", "s", property_get_dnssec_mode, 0, 0),

SD_BUS_PROPERTY("DNSSECNegativeTrustAnchors", "as", property_get_ntas, 0, 0),

SD_BUS_PROPERTY("DNSSECSupported", "b", property_get_dnssec_supported, 0, 0),

SD_BUS_METHOD_WITH_ARGS("SetDNS",

SD_BUS_ARGS("a(iay)", addresses),

SD_BUS_NO_RESULT,

bus_link_method_set_dns_servers,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD_WITH_ARGS("SetDNSEx",

SD_BUS_ARGS("a(iayqs)", addresses),

SD_BUS_NO_RESULT,

bus_link_method_set_dns_servers_ex,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD_WITH_ARGS("SetDomains",

SD_BUS_ARGS("a(sb)", domains),

SD_BUS_NO_RESULT,

bus_link_method_set_domains,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD_WITH_ARGS("SetDefaultRoute",

SD_BUS_ARGS("b", enable),

SD_BUS_NO_RESULT,

bus_link_method_set_default_route,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD_WITH_ARGS("SetLLMNR",

SD_BUS_ARGS("s", mode),

SD_BUS_NO_RESULT,

bus_link_method_set_llmnr,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD_WITH_ARGS("SetMulticastDNS",

SD_BUS_ARGS("s", mode),

SD_BUS_NO_RESULT,

bus_link_method_set_mdns,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD_WITH_ARGS("SetDNSOverTLS",

SD_BUS_ARGS("s", mode),

SD_BUS_NO_RESULT,

bus_link_method_set_dns_over_tls,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD_WITH_ARGS("SetDNSSEC",

SD_BUS_ARGS("s", mode),

SD_BUS_NO_RESULT,

bus_link_method_set_dnssec,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD_WITH_ARGS("SetDNSSECNegativeTrustAnchors",

SD_BUS_ARGS("as", names),

SD_BUS_NO_RESULT,

bus_link_method_set_dnssec_negative_trust_anchors,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_METHOD_WITH_ARGS("Revert",

SD_BUS_NO_ARGS,

SD_BUS_NO_RESULT,

bus_link_method_revert,

SD_BUS_VTABLE_UNPRIVILEGED),

SD_BUS_VTABLE_END

};

const BusObjectImplementation link_object = {

"/org/freedesktop/resolve1/link",

"org.freedesktop.resolve1.Link",

.fallback_vtables = BUS_FALLBACK_VTABLES({link_vtable, link_object_find}),

.node_enumerator = link_node_enumerator,

};