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-rw-r--r--src/resolve/resolved-dnssd-bus.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/src/resolve/resolved-dnssd-bus.c b/src/resolve/resolved-dnssd-bus.c
new file mode 100644
index 0000000..0f0d478
--- /dev/null
+++ b/src/resolve/resolved-dnssd-bus.c
@@ -0,0 +1,131 @@
+/* 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 = ASSERT_PTR(userdata);
+ Manager *m;
+ Link *l;
+ int r;
+
+ assert(message);
+
+ 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 = ASSERT_PTR(userdata);
+ DnssdService *service;
+ int r;
+
+ assert(bus);
+ assert(path);
+ assert(interface);
+ assert(found);
+
+ 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 = ASSERT_PTR(userdata);
+ DnssdService *service;
+ unsigned c = 0;
+ int r;
+
+ assert(bus);
+ assert(path);
+ 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,
+};