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zeroconf: support proto, ifindex and subtypes

Browse source 
Also improve debug a little.
This commit is contained in:
Wim Taymans 2026-02-27 12:22:24 +01:00
parent cd77dd0e62
commit c09bcfdc97
1 changed files with 51 additions and 12 deletions
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63
src/modules/zeroconf-utils/zeroconf.c
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@ -188,17 +188,21 @@ static struct service *service_new(struct entry *e,
if ((s->props = pw_properties_new(NULL, NULL)) == NULL)
goto error;
if (a->proto == AVAHI_PROTO_INET6 &&
if (a->proto == AVAHI_PROTO_INET6 && info->interface != AVAHI_IF_UNSPEC &&
a->data.ipv6.address[0] == 0xfe &&
(a->data.ipv6.address[1] & 0xc0) == 0x80)
snprintf(if_suffix, sizeof(if_suffix), "%%%d", info->interface);
avahi_address_snprint(at, sizeof(at), a);
if (a->proto == AVAHI_PROTO_INET &&
if (a->proto == AVAHI_PROTO_INET && info->interface != AVAHI_IF_UNSPEC &&
spa_strstartswith(at, link_local_range))
snprintf(if_suffix, sizeof(if_suffix), "%%%d", info->interface);
pw_properties_setf(s->props, "zeroconf.ifindex", "%d", info->interface);
if (a->proto != AVAHI_PROTO_UNSPEC)
pw_properties_setf(s->props, "zeroconf.proto", "%s",
a->proto == AVAHI_PROTO_INET ? "4" : "6");
if (info->interface != AVAHI_IF_UNSPEC)
pw_properties_setf(s->props, "zeroconf.ifindex", "%d", info->interface);
pw_properties_setf(s->props, "zeroconf.name", "%s", info->name);
pw_properties_setf(s->props, "zeroconf.type", "%s", info->type);
pw_properties_setf(s->props, "zeroconf.domain", "%s", info->domain);
@ -318,7 +322,7 @@ static int do_browse(struct pw_zeroconf *zc, struct entry *e)
}
if (service_name == NULL) {
res = -EINVAL;
pw_log_error("no service provided");
pw_log_error("can't make browser: no service provided");
pw_zeroconf_emit_error(zc, res, spa_strerror(res));
return res;
}
@ -340,20 +344,23 @@ static void entry_group_callback(AvahiEntryGroup *g, AvahiEntryGroupState state,
{
struct entry *e = userdata;
struct pw_zeroconf *zc = e->zc;
const char *name;
int res;
zc->refcount++;
name = pw_properties_get(e->props, "zeroconf.session");
switch (state) {
case AVAHI_ENTRY_GROUP_ESTABLISHED:
pw_log_info("Service successfully established");
pw_log_debug("Entry \"%s\" added", name);
break;
case AVAHI_ENTRY_GROUP_COLLISION:
pw_log_error("Service name collision");
pw_log_error("Entry \"%s\" name collision", name);
break;
case AVAHI_ENTRY_GROUP_FAILURE:
res = avahi_client_errno(zc->client);
pw_log_error("Entry group failure: %s", avahi_strerror(res));
pw_log_error("Entry \"%s\" failure: %s", name, avahi_strerror(res));
pw_zeroconf_emit_error(zc, res, avahi_strerror(res));
break;
case AVAHI_ENTRY_GROUP_UNCOMMITED:
@ -366,9 +373,9 @@ static void entry_group_callback(AvahiEntryGroup *g, AvahiEntryGroupState state,
static int do_announce(struct pw_zeroconf *zc, struct entry *e)
{
AvahiStringList *txt = NULL;
int res;
int res, ifindex = AVAHI_IF_UNSPEC, proto = AVAHI_PROTO_UNSPEC;
const struct spa_dict_item *it;
const char *session_name = "unnamed", *service = NULL;
const char *session_name = "unnamed", *service = NULL, *subtypes = NULL;
const char *domain = NULL, *host = NULL;
uint16_t port = 0;
@ -395,18 +402,24 @@ static int do_announce(struct pw_zeroconf *zc, struct entry *e)
domain = it->value;
else if (spa_streq(it->key, "zeroconf.host"))
host = it->value;
else if (spa_streq(it->key, "zeroconf.ifindex"))
ifindex = atoi(it->value);
else if (spa_streq(it->key, "zeroconf.proto"))
proto = atoi(it->value) == 6 ? AVAHI_PROTO_INET6 : AVAHI_PROTO_INET;
else if (spa_streq(it->key, "zeroconf.subtypes"))
subtypes = it->value;
else
txt = avahi_string_list_add_pair(txt, it->key, it->value);
}
if (service == NULL) {
res = -EINVAL;
pw_log_error("no service provided");
pw_log_error("can't announce: no service provided");
pw_zeroconf_emit_error(zc, res, spa_strerror(res));
avahi_string_list_free(txt);
return res;
}
res = avahi_entry_group_add_service_strlst(e->group,
AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC,
ifindex, proto,
(AvahiPublishFlags)0, session_name,
service, domain, host, port, txt);
avahi_string_list_free(txt);
@ -417,6 +430,30 @@ static int do_announce(struct pw_zeroconf *zc, struct entry *e)
pw_zeroconf_emit_error(zc, res, avahi_strerror(res));
return -EIO;
}
if (subtypes) {
struct spa_json iter;
char v[512];
if (spa_json_begin_array_relax(&iter, subtypes, strlen(subtypes)) <= 0) {
res = -EINVAL;
pw_log_error("invalid subtypes: %s", subtypes);
pw_zeroconf_emit_error(zc, res, spa_strerror(res));
return res;
}
while (spa_json_get_string(&iter, v, sizeof(v)) > 0) {
res = avahi_entry_group_add_service_subtype(e->group,
ifindex, proto,
(AvahiPublishFlags)0, session_name,
service, domain, v);
if (res < 0) {
res = avahi_client_errno(zc->client);
pw_log_error("can't add subtype: %s", avahi_strerror(res));
pw_zeroconf_emit_error(zc, res, avahi_strerror(res));
return -EIO;
}
}
}
if ((res = avahi_entry_group_commit(e->group)) < 0) {
res = avahi_client_errno(zc->client);
pw_log_error("can't commit group: %s", avahi_strerror(res));
@ -481,7 +518,9 @@ static struct entry *entry_new(struct pw_zeroconf *zc, uint32_t type, void *user
e->props = pw_properties_new_dict(info);
spa_list_append(&zc->entries, &e->link);
spa_list_init(&e->services);
pw_log_info("created %s", type == TYPE_ANNOUNCE ? "announce" : "browse");
pw_log_debug("created %s for \"%s\"",
type == TYPE_ANNOUNCE ? "announce" : "browse",
pw_properties_get(e->props, "zeroconf.session"));
return e;
}