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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "alloc-util.h"
#include "bus-polkit.h"
#include "missing_capability.h"
#include "resolved-dnssd-bus.h"
#include "resolved-dnssd.h"
#include "resolved-link.h"
#include "resolved-manager.h"
#include "strv.h"
#include "user-util.h"
int bus_dnssd_method_unregister(sd_bus_message *message, void *userdata, sd_bus_error *error) {
DnssdService *s = userdata;
DnssdTxtData *txt_data;
Manager *m;
Link *l;
int r;
assert(message);
assert(s);
m = s->manager;
r = bus_verify_polkit_async(message, CAP_SYS_ADMIN,
"org.freedesktop.resolve1.unregister-service",
NULL, false, s->originator,
&m->polkit_registry, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Polkit will call us back */
HASHMAP_FOREACH(l, m->links) {
if (l->mdns_ipv4_scope) {
r = dns_scope_announce(l->mdns_ipv4_scope, true);
if (r < 0)
log_warning_errno(r, "Failed to send goodbye messages in IPv4 scope: %m");
dns_zone_remove_rr(&l->mdns_ipv4_scope->zone, s->ptr_rr);
dns_zone_remove_rr(&l->mdns_ipv4_scope->zone, s->srv_rr);
LIST_FOREACH(items, txt_data, s->txt_data_items)
dns_zone_remove_rr(&l->mdns_ipv4_scope->zone, txt_data->rr);
}
if (l->mdns_ipv6_scope) {
r = dns_scope_announce(l->mdns_ipv6_scope, true);
if (r < 0)
log_warning_errno(r, "Failed to send goodbye messages in IPv6 scope: %m");
dns_zone_remove_rr(&l->mdns_ipv6_scope->zone, s->ptr_rr);
dns_zone_remove_rr(&l->mdns_ipv6_scope->zone, s->srv_rr);
LIST_FOREACH(items, txt_data, s->txt_data_items)
dns_zone_remove_rr(&l->mdns_ipv6_scope->zone, txt_data->rr);
}
}
dnssd_service_free(s);
manager_refresh_rrs(m);
return sd_bus_reply_method_return(message, NULL);
}
static int dnssd_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
_cleanup_free_ char *name = NULL;
Manager *m = userdata;
DnssdService *service;
int r;
assert(bus);
assert(path);
assert(interface);
assert(found);
assert(m);
r = sd_bus_path_decode(path, "/org/freedesktop/resolve1/dnssd", &name);
if (r <= 0)
return 0;
service = hashmap_get(m->dnssd_services, name);
if (!service)
return 0;
*found = service;
return 1;
}
static int dnssd_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;
DnssdService *service;
unsigned c = 0;
int r;
assert(bus);
assert(path);
assert(m);
assert(nodes);
l = new0(char*, hashmap_size(m->dnssd_services) + 1);
if (!l)
return -ENOMEM;
HASHMAP_FOREACH(service, m->dnssd_services) {
char *p;
r = sd_bus_path_encode("/org/freedesktop/resolve1/dnssd", service->name, &p);
if (r < 0)
return r;
l[c++] = p;
}
l[c] = NULL;
*nodes = TAKE_PTR(l);
return 1;
}
static const sd_bus_vtable dnssd_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_METHOD("Unregister", NULL, NULL, bus_dnssd_method_unregister, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_SIGNAL("Conflicted", NULL, 0),
SD_BUS_VTABLE_END
};
const BusObjectImplementation dnssd_object = {
"/org/freedesktop/resolve1/dnssd",
"org.freedesktop.resolve1.DnssdService",
.fallback_vtables = BUS_FALLBACK_VTABLES({dnssd_vtable, dnssd_object_find}),
.node_enumerator = dnssd_node_enumerator,
};
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