146 lines
4.6 KiB
C
146 lines
4.6 KiB
C
/***
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This file is part of systemd.
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Copyright 2017 Dmitry Rozhkov
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "alloc-util.h"
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#include "bus-util.h"
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#include "resolved-dnssd.h"
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#include "resolved-dnssd-bus.h"
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#include "resolved-link.h"
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#include "strv.h"
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#include "user-util.h"
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int bus_dnssd_method_unregister(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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DnssdService *s = userdata;
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DnssdTxtData *txt_data;
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Manager *m;
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Iterator i;
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Link *l;
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int r;
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assert(message);
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assert(s);
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m = s->manager;
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r = bus_verify_polkit_async(message, CAP_SYS_ADMIN,
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"org.freedesktop.resolve1.unregister-service",
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NULL, false, s->originator,
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&m->polkit_registry, error);
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if (r < 0)
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return r;
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if (r == 0)
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return 1; /* Polkit will call us back */
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HASHMAP_FOREACH(l, m->links, i) {
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if (l->mdns_ipv4_scope) {
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r = dns_scope_announce(l->mdns_ipv4_scope, true);
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if (r < 0)
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log_warning_errno(r, "Failed to send goodbye messages in IPv4 scope: %m");
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dns_zone_remove_rr(&l->mdns_ipv4_scope->zone, s->ptr_rr);
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dns_zone_remove_rr(&l->mdns_ipv4_scope->zone, s->srv_rr);
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LIST_FOREACH(items, txt_data, s->txt_data_items)
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dns_zone_remove_rr(&l->mdns_ipv4_scope->zone, txt_data->rr);
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}
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if (l->mdns_ipv6_scope) {
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r = dns_scope_announce(l->mdns_ipv6_scope, true);
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if (r < 0)
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log_warning_errno(r, "Failed to send goodbye messages in IPv6 scope: %m");
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dns_zone_remove_rr(&l->mdns_ipv6_scope->zone, s->ptr_rr);
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dns_zone_remove_rr(&l->mdns_ipv6_scope->zone, s->srv_rr);
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LIST_FOREACH(items, txt_data, s->txt_data_items)
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dns_zone_remove_rr(&l->mdns_ipv6_scope->zone, txt_data->rr);
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}
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}
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dnssd_service_free(s);
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manager_refresh_rrs(m);
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return sd_bus_reply_method_return(message, NULL);
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}
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const sd_bus_vtable dnssd_vtable[] = {
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SD_BUS_VTABLE_START(0),
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SD_BUS_METHOD("Unregister", NULL, NULL, bus_dnssd_method_unregister, SD_BUS_VTABLE_UNPRIVILEGED),
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SD_BUS_SIGNAL("Conflicted", NULL, 0),
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SD_BUS_VTABLE_END
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};
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int dnssd_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
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_cleanup_free_ char *name = NULL;
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Manager *m = userdata;
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DnssdService *service;
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int r;
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assert(bus);
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assert(path);
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assert(interface);
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assert(found);
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assert(m);
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r = sd_bus_path_decode(path, "/org/freedesktop/resolve1/dnssd", &name);
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if (r <= 0)
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return 0;
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service = hashmap_get(m->dnssd_services, name);
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if (!service)
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return 0;
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*found = service;
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return 1;
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}
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int dnssd_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
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_cleanup_strv_free_ char **l = NULL;
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Manager *m = userdata;
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DnssdService *service;
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Iterator i;
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unsigned c = 0;
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int r;
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assert(bus);
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assert(path);
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assert(m);
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assert(nodes);
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l = new0(char*, hashmap_size(m->dnssd_services) + 1);
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if (!l)
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return -ENOMEM;
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HASHMAP_FOREACH(service, m->dnssd_services, i) {
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char *p;
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r = sd_bus_path_encode("/org/freedesktop/resolve1/dnssd", service->name, &p);
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if (r < 0)
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return r;
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l[c++] = p;
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}
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l[c] = NULL;
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*nodes = TAKE_PTR(l);
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return 1;
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}
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