static int append_string_list(DBusMessage *message, AvahiStringList *txt) {
DBusMessageIter iter, sub;
int r = -1;
AvahiStringList *p;
assert(message);
dbus_message_iter_init_append(message, &iter);
/* Reverse the string list, so that we can pass it in-order to the server */
txt = avahi_string_list_reverse(txt);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "ay", &sub))
goto fail;
/* Assemble the AvahiStringList into an Array of Array of Bytes to send over dbus */
for (p = txt; p != NULL; p = p->next) {
DBusMessageIter sub2;
const uint8_t *data = p->text;
if (!(dbus_message_iter_open_container(&sub, DBUS_TYPE_ARRAY, "y", &sub2)) ||
!(dbus_message_iter_append_fixed_array(&sub2, DBUS_TYPE_BYTE, &data, p->size)) ||
!(dbus_message_iter_close_container(&sub, &sub2)))
goto fail;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto fail;
r = 0;
fail:
/* Reverse the string list to the original state */
txt = avahi_string_list_reverse(txt);
return r;
}
bool CZeroconfAvahi::doForceReAnnounceService(const std::string& fcr_identifier)
{
bool ret = false;
ScopedEventLoopBlock l_block(mp_poll);
tServiceMap::iterator it = m_services.find(fcr_identifier);
if (it != m_services.end() && it->second->mp_group)
{
// to force a reannounce on avahi its enough to reverse the txtrecord list
it->second->mp_txt = avahi_string_list_reverse(it->second->mp_txt);
// this will trigger the reannouncement
if ((avahi_entry_group_update_service_txt_strlst(it->second->mp_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AvahiPublishFlags(0),
it->second->m_name.c_str(),
it->second->m_type.c_str(), NULL, it->second->mp_txt)) >= 0)
ret = true;
}
return ret;
}
AvahiDomainBrowser* avahi_domain_browser_new(
AvahiClient *client,
AvahiIfIndex interface,
AvahiProtocol protocol,
const char *domain,
AvahiDomainBrowserType btype,
AvahiLookupFlags flags,
AvahiDomainBrowserCallback callback,
void *userdata) {
AvahiDomainBrowser *db = NULL;
DBusMessage *message = NULL, *reply = NULL;
DBusError error;
char *path;
int32_t i_interface, i_protocol, bt;
uint32_t u_flags;
assert(client);
assert(callback);
dbus_error_init (&error);
if (!avahi_client_is_connected(client)) {
avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
goto fail;
}
if (!domain)
domain = "";
if (!(db = avahi_new (AvahiDomainBrowser, 1))) {
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
db->ref = 1;
db->client = client;
db->callback = callback;
db->userdata = userdata;
db->path = NULL;
db->interface = interface;
db->protocol = protocol;
db->static_browse_domains = NULL;
db->defer_timeout = NULL;
AVAHI_LLIST_PREPEND(AvahiDomainBrowser, domain_browsers, client->domain_browsers, db);
if (!(client->flags & AVAHI_CLIENT_IGNORE_USER_CONFIG)) {
parse_environment(db);
parse_domain_file(db);
}
db->static_browse_domains = avahi_string_list_reverse(db->static_browse_domains);
if (!(message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "DomainBrowserNew"))) {
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
i_interface = (int32_t) interface;
i_protocol = (int32_t) protocol;
u_flags = (uint32_t) flags;
bt = btype;
if (!(dbus_message_append_args(
message,
DBUS_TYPE_INT32, &i_interface,
DBUS_TYPE_INT32, &i_protocol,
DBUS_TYPE_STRING, &domain,
DBUS_TYPE_INT32, &bt,
DBUS_TYPE_UINT32, &u_flags,
DBUS_TYPE_INVALID))) {
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
if (!(reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error)) ||
dbus_error_is_set(&error)) {
avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
goto fail;
}
if (!dbus_message_get_args (reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID) ||
dbus_error_is_set(&error) ||
!path) {
avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
goto fail;
}
if (!(db->path = avahi_strdup(path))) {
/* FIXME: We don't remove the object on the server side */
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
if (db->static_browse_domains && btype == AVAHI_DOMAIN_BROWSER_BROWSE) {
struct timeval tv = { 0, 0 };
if (!(db->defer_timeout = client->poll_api->timeout_new(client->poll_api, &tv, defer_timeout_callback, db))) {
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
goto fail;
}
}
dbus_message_unref(message);
dbus_message_unref(reply);
return db;
fail:
if (dbus_error_is_set(&error)) {
avahi_client_set_dbus_error(client, &error);
dbus_error_free(&error);
}
if (db)
avahi_domain_browser_free(db);
if (message)
dbus_message_unref(message);
if (reply)
dbus_message_unref(reply);
return NULL;
}
