gboolean
_g_inet_socket_address_is_equal (GInetSocketAddress *a, GInetSocketAddress *b)
{
GInetAddress *a_addr;
GInetAddress *b_addr;
char *a_str;
char *b_str;
gboolean result;
if (!G_IS_INET_SOCKET_ADDRESS (a) ||
!G_IS_INET_SOCKET_ADDRESS (b))
return FALSE;
if (g_inet_socket_address_get_port (a) != g_inet_socket_address_get_port (b))
return FALSE;
a_addr = g_inet_socket_address_get_address (a);
b_addr = g_inet_socket_address_get_address (b);
a_str = g_inet_address_to_string (a_addr);
b_str = g_inet_address_to_string (b_addr);
/* TODO: find a better way to do inet address comparison */
result = g_strcmp0 (a_str, b_str) == 0;
g_free (a_str);
g_free (b_str);
return result;
}
static void
print_connectable_sockaddr (GSocketAddress *sockaddr,
GError *error)
{
char *phys;
if (error)
{
printf ("Error: %s\n", error->message);
g_error_free (error);
}
else if (!G_IS_INET_SOCKET_ADDRESS (sockaddr))
{
printf ("Error: Unexpected sockaddr type '%s'\n", g_type_name_from_instance ((GTypeInstance *)sockaddr));
g_object_unref (sockaddr);
}
else
{
GInetSocketAddress *isa = G_INET_SOCKET_ADDRESS (sockaddr);
phys = g_inet_address_to_string (g_inet_socket_address_get_address (isa));
printf ("Address: %s%s%s:%d\n",
strchr (phys, ':') ? "[" : "", phys, strchr (phys, ':') ? "]" : "",
g_inet_socket_address_get_port (isa));
g_free (phys);
g_object_unref (sockaddr);
}
}
static char *
socket_address_to_string (GSocketAddress *address)
{
char *res = NULL;
if (G_IS_INET_SOCKET_ADDRESS (address))
{
GInetAddress *inet_address;
char *str;
int port;
inet_address = g_inet_socket_address_get_address (G_INET_SOCKET_ADDRESS (address));
str = g_inet_address_to_string (inet_address);
port = g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (address));
res = g_strdup_printf ("%s:%d", str, port);
g_free (str);
}
#ifdef G_OS_UNIX
else if (G_IS_UNIX_SOCKET_ADDRESS (address))
{
GUnixSocketAddress *uaddr = G_UNIX_SOCKET_ADDRESS (address);
res = g_strdup_printf ("%s:%s",
unix_socket_address_types[g_unix_socket_address_get_address_type (uaddr)],
g_unix_socket_address_get_path (uaddr));
}
#endif
return res;
}
/**
* replay_network_server_load_file:
* @self: A #ReplayNetworkServer
* @conn: The #GSocketConnection to load events from
*
*/
void
replay_network_server_load_events(ReplayNetworkServer *self,
GSocketConnection *conn)
{
GError *error = NULL;
GSocketAddress *address;
GInetAddress *inet;
guint16 port;
gchar *inet_str;
gchar *description;
g_return_if_fail(REPLAY_IS_NETWORK_SERVER(self));
REPLAY_NETWORK_SERVER_GET_CLASS(self)->load_events(self, conn);
/* set description to the remote address and port */
address = g_socket_connection_get_remote_address(conn, &error);
if (address) {
inet = g_inet_socket_address_get_address(G_INET_SOCKET_ADDRESS(address));
port = g_inet_socket_address_get_port(G_INET_SOCKET_ADDRESS(address));
inet_str = g_inet_address_to_string(inet);
description = g_strdup_printf("Remote client %s, port %d", inet_str, port);
replay_event_source_set_description(REPLAY_EVENT_SOURCE(self), description);
g_free(description);
g_free(inet_str);
g_object_unref(address);
} else {
g_assert(error);
replay_event_source_set_description(REPLAY_EVENT_SOURCE(self), error->message);
g_clear_error(&error);
}
}
gboolean
__g_socket_address_equal (GSocketAddress * a, GSocketAddress * b)
{
GInetSocketAddress *ia, *ib;
GInetAddress *iaa, *iab;
ia = G_INET_SOCKET_ADDRESS (a);
ib = G_INET_SOCKET_ADDRESS (b);
if (g_inet_socket_address_get_port (ia) !=
g_inet_socket_address_get_port (ib))
return FALSE;
iaa = g_inet_socket_address_get_address (ia);
iab = g_inet_socket_address_get_address (ib);
return g_inet_address_equal (iaa, iab);
}
GStrv
_client_create_exec_args (GSocket *socket,
const gchar *contact_id,
const gchar *username,
gchar **ssh_opts)
{
GPtrArray *args;
GSocketAddress *socket_address;
GInetAddress *inet_address;
guint16 port;
gchar *host;
gchar *str;
gchar **opt;
/* Get the local host and port on which sshd is running */
socket_address = g_socket_get_local_address (socket, NULL);
inet_address = g_inet_socket_address_get_address (
G_INET_SOCKET_ADDRESS (socket_address));
port = g_inet_socket_address_get_port (
G_INET_SOCKET_ADDRESS (socket_address));
host = g_inet_address_to_string (inet_address);
/* Create ssh client args */
args = g_ptr_array_new_with_free_func (g_free);
g_ptr_array_add (args, g_strdup ("ssh"));
g_ptr_array_add (args, host);
g_ptr_array_add (args, g_strdup ("-p"));
str = g_strdup_printf ("%d", port);
g_ptr_array_add (args, str);
if (contact_id != NULL)
{
str = g_strdup_printf ("-oHostKeyAlias=%s", contact_id);
g_ptr_array_add (args, str);
}
if (!tp_str_empty (username))
{
g_ptr_array_add (args, g_strdup ("-l"));
g_ptr_array_add (args, g_strdup (username));
}
if (ssh_opts != NULL)
{
for (opt = ssh_opts; *opt != NULL; opt++)
{
g_ptr_array_add (args, g_strdup (*opt));
}
}
g_ptr_array_add (args, NULL);
return (gchar **) g_ptr_array_free (args, FALSE);
}
static void
process_one_address (NewConnectionData *data)
{
GInetSocketAddress *addr;
gchar *host;
if (g_cancellable_is_cancelled (data->cancellable))
{
g_simple_async_result_set_error (data->simple, G_IO_ERROR,
G_IO_ERROR_CANCELLED, "Operation cancelled");
g_simple_async_result_complete (data->simple);
free_new_connection_data (data);
return;
}
addr = g_queue_pop_head (data->addresses);
/* check we haven't gotten to the end of the list */
if (addr == NULL)
{
g_simple_async_result_set_error (data->simple,
WOCKY_LL_CONNECTION_FACTORY_ERROR,
WOCKY_LL_CONNECTION_FACTORY_ERROR_NO_CONTACT_ADDRESS_CAN_BE_CONNECTED_TO,
"Failed to connect to any of the contact's addresses");
g_simple_async_result_complete (data->simple);
free_new_connection_data (data);
return;
}
host = g_inet_address_to_string (g_inet_socket_address_get_address (addr));
DEBUG ("connecting to %s (port %" G_GUINT16_FORMAT ")", host,
g_inet_socket_address_get_port (addr));
g_socket_client_connect_to_host_async (data->self->priv->client,
host, g_inet_socket_address_get_port (addr),
data->cancellable, connect_to_host_cb, data);
g_free (host);
g_object_unref (addr);
}
static gboolean
sig_match_conn (TpStreamTubeChannel *self,
SigWaitingConn *sig,
ConnWaitingSig *c)
{
if (self->priv->access_control == TP_SOCKET_ACCESS_CONTROL_PORT)
{
/* Use the port to identify the connection */
guint port;
GSocketAddress *address;
GError *error = NULL;
address = g_socket_connection_get_remote_address (c->conn, &error);
if (address == NULL)
{
DEBUG ("Failed to get connection address: %s", error->message);
g_error_free (error);
return FALSE;
}
dbus_g_type_struct_get (sig->param, 1, &port, G_MAXINT);
if (port == g_inet_socket_address_get_port (
G_INET_SOCKET_ADDRESS (address)))
{
DEBUG ("Identified connection %u using port %u",
port, sig->connection_id);
g_object_unref (address);
return TRUE;
}
g_object_unref (address);
}
else if (self->priv->access_control == TP_SOCKET_ACCESS_CONTROL_CREDENTIALS)
{
guchar byte;
byte = g_value_get_uchar (sig->param);
return byte == c->byte;
}
else
{
DEBUG ("Can't properly identify connection as we are using "
"access control %u. Assume it's the head of the list",
self->priv->access_control);
return TRUE;
}
return FALSE;
}
guint16
arv_gv_stream_get_port (ArvGvStream *gv_stream)
{
GInetSocketAddress *local_address;
guint16 port;
g_return_val_if_fail (ARV_IS_GV_STREAM (gv_stream), 0);
local_address = G_INET_SOCKET_ADDRESS (g_socket_get_local_address (gv_stream->socket, NULL));
port = g_inet_socket_address_get_port (local_address);
g_object_unref (local_address);
return port;
}
static char *
socket_address_to_string (GSocketAddress *address)
{
GInetAddress *inet_address;
char *str, *res;
int port;
inet_address = g_inet_socket_address_get_address (G_INET_SOCKET_ADDRESS (address));
str = g_inet_address_to_string (inet_address);
port = g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (address));
res = g_strdup_printf ("%s:%d", str, port);
g_free (str);
return res;
}
gchar *
__g_socket_address_to_string (GSocketAddress * addr)
{
GInetSocketAddress *ia;
gchar *ret, *tmp;
ia = G_INET_SOCKET_ADDRESS (addr);
tmp = g_inet_address_to_string (g_inet_socket_address_get_address (ia));
ret = g_strdup_printf ("%s:%u", tmp, g_inet_socket_address_get_port (ia));
g_free (tmp);
return ret;
}
static gboolean
on_new_connection (GSocketService * service, GSocketConnection * connection,
GObject * source_object, gpointer user_data)
{
Client *client = g_slice_new0 (Client);
GSocketAddress *addr;
GInetAddress *iaddr;
gchar *ip;
guint16 port;
addr = g_socket_connection_get_remote_address (connection, NULL);
iaddr = g_inet_socket_address_get_address (G_INET_SOCKET_ADDRESS (addr));
port = g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (addr));
ip = g_inet_address_to_string (iaddr);
client->name = g_strdup_printf ("%s:%u", ip, port);
g_free (ip);
g_object_unref (addr);
g_print ("New connection %s\n", client->name);
client->connection = (GSocketConnection *) g_object_ref (connection);
client->socket = g_socket_connection_get_socket (connection);
client->istream =
g_io_stream_get_input_stream (G_IO_STREAM (client->connection));
client->ostream =
g_io_stream_get_output_stream (G_IO_STREAM (client->connection));
client->current_message = g_byte_array_sized_new (1024);
client->tosource = g_timeout_source_new_seconds (5);
g_source_set_callback (client->tosource, (GSourceFunc) on_timeout, client,
NULL);
g_source_attach (client->tosource, NULL);
client->isource =
g_pollable_input_stream_create_source (G_POLLABLE_INPUT_STREAM
(client->istream), NULL);
g_source_set_callback (client->isource, (GSourceFunc) on_read_bytes, client,
NULL);
g_source_attach (client->isource, NULL);
G_LOCK (clients);
clients = g_list_prepend (clients, client);
G_UNLOCK (clients);
return TRUE;
}
int
kms_sctp_connection_get_bound_port (KmsSCTPConnection * conn)
{
GSocketAddress *addr;
gint bound_port = -1;
g_return_val_if_fail (conn != NULL, bound_port);
addr = g_socket_get_local_address (conn->socket, NULL);
if (addr != NULL) {
bound_port = g_inet_socket_address_get_port ((GInetSocketAddress *) addr);
g_object_unref (addr);
}
return bound_port;
}
static void
g_tls_client_connection_gnutls_constructed (GObject *object)
{
GTlsClientConnectionGnutls *gnutls = G_TLS_CLIENT_CONNECTION_GNUTLS (object);
GSocketConnection *base_conn;
GSocketAddress *remote_addr;
GInetAddress *iaddr;
guint port;
/* Create a TLS session ID. We base it on the IP address since
* different hosts serving the same hostname/service will probably
* not share the same session cache. We base it on the
* server-identity because at least some servers will fail (rather
* than just failing to resume the session) if we don't.
* (https://bugs.launchpad.net/bugs/823325)
*/
g_object_get (G_OBJECT (gnutls), "base-io-stream", &base_conn, NULL);
if (G_IS_SOCKET_CONNECTION (base_conn))
{
remote_addr = g_socket_connection_get_remote_address (base_conn, NULL);
if (G_IS_INET_SOCKET_ADDRESS (remote_addr))
{
GInetSocketAddress *isaddr = G_INET_SOCKET_ADDRESS (remote_addr);
const gchar *server_hostname;
gchar *addrstr, *session_id;
iaddr = g_inet_socket_address_get_address (isaddr);
port = g_inet_socket_address_get_port (isaddr);
addrstr = g_inet_address_to_string (iaddr);
server_hostname = get_server_identity (gnutls);
session_id = g_strdup_printf ("%s/%s/%d", addrstr,
server_hostname ? server_hostname : "",
port);
gnutls->priv->session_id = g_bytes_new_take (session_id, strlen (session_id));
g_free (addrstr);
}
g_object_unref (remote_addr);
}
g_object_unref (base_conn);
if (G_OBJECT_CLASS (g_tls_client_connection_gnutls_parent_class)->constructed)
G_OBJECT_CLASS (g_tls_client_connection_gnutls_parent_class)->constructed (object);
}
static gboolean
BP_TCPService_IncomingConnection (GSocketService *service,
GSocketConnection *incomingConnection,
GObject *source_object,
gpointer user_data)
{
BPTCPService *filter = BP_TCPSERVICE (user_data);
GSocket *socket = g_socket_connection_get_socket(incomingConnection);
GSocketAddress *sockaddr = g_socket_connection_get_remote_address(incomingConnection, NULL);
GInetAddress *addr = g_inet_socket_address_get_address(G_INET_SOCKET_ADDRESS(sockaddr));
gchar* remoteHost = g_inet_address_to_string(addr);
gint fd = g_socket_get_fd(socket);
GIOChannel *channel = g_io_channel_unix_new(fd);
if (filter->mode == BP_MODE_SINK_ONLY) {
GST_ERROR ("Attempt to accept connection but in sink-only mode");
return FALSE;
}
// Ref connection
g_object_ref (incomingConnection);
// Get remote host & port
filter->remotePort = g_inet_socket_address_get_port(G_INET_SOCKET_ADDRESS(sockaddr));
g_string_assign(filter->remoteAddress, remoteHost);
g_free (remoteHost);
g_message ("New connection from %s:%d", filter->remoteAddress->str, (int) filter->remotePort);
g_message ("Attaching IO channel watch ...");
// Add IO watch with pointer to connection handle as user data for callback
g_io_add_watch(channel, G_IO_IN, (GIOFunc) BP_TCPService_IncomingConnectionReceive, filter);
g_io_channel_unref (channel);
g_message ("Registering connection");
BP_TCPService_UpdateUID (filter);
ServerPool_AddInstance (filter->uid, filter->service, incomingConnection);
return FALSE;
}
//New tcp conection
gboolean new_connection(GSocketService *service, GSocketConnection *connection, GObject *source_object, gpointer user_data) {
//New client connected
GSocketAddress *sockaddr = g_socket_connection_get_remote_address(connection, NULL);
GInetAddress *addr = g_inet_socket_address_get_address(G_INET_SOCKET_ADDRESS(sockaddr));
guint16 port = g_inet_socket_address_get_port(G_INET_SOCKET_ADDRESS(sockaddr));
if (verbose) {
printf("App Server: New Connection from %s:%d\n", g_inet_address_to_string(addr), port);
fflush(stdout);
}
//Record client (if new)
add_client(g_inet_address_to_string(addr), connection);
g_object_ref (connection);
GSocket *socket = g_socket_connection_get_socket(connection);
gint fd = g_socket_get_fd(socket);
GIOChannel *channel = g_io_channel_unix_new(fd);
g_io_add_watch(channel, G_IO_IN, (GIOFunc) network_read, connection);
return TRUE;
}
static gboolean
gst_net_client_internal_clock_start (GstNetClientInternalClock * self)
{
GSocketAddress *servaddr;
GSocketAddress *myaddr;
GSocketAddress *anyaddr;
GInetAddress *inetaddr;
GSocket *socket;
GError *error = NULL;
GSocketFamily family;
GPollFD dummy_pollfd;
GResolver *resolver = NULL;
GError *err = NULL;
g_return_val_if_fail (self->address != NULL, FALSE);
g_return_val_if_fail (self->servaddr == NULL, FALSE);
/* create target address */
inetaddr = g_inet_address_new_from_string (self->address);
if (inetaddr == NULL) {
GList *results;
resolver = g_resolver_get_default ();
results = g_resolver_lookup_by_name (resolver, self->address, NULL, &err);
if (!results)
goto failed_to_resolve;
inetaddr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
family = g_inet_address_get_family (inetaddr);
servaddr = g_inet_socket_address_new (inetaddr, self->port);
g_object_unref (inetaddr);
g_assert (servaddr != NULL);
GST_DEBUG_OBJECT (self, "will communicate with %s:%d", self->address,
self->port);
socket = g_socket_new (family, G_SOCKET_TYPE_DATAGRAM,
G_SOCKET_PROTOCOL_UDP, &error);
if (socket == NULL)
goto no_socket;
GST_DEBUG_OBJECT (self, "binding socket");
inetaddr = g_inet_address_new_any (family);
anyaddr = g_inet_socket_address_new (inetaddr, 0);
g_socket_bind (socket, anyaddr, TRUE, &error);
g_object_unref (anyaddr);
g_object_unref (inetaddr);
if (error != NULL)
goto bind_error;
/* check address we're bound to, mostly for debugging purposes */
myaddr = g_socket_get_local_address (socket, &error);
if (myaddr == NULL)
goto getsockname_error;
GST_DEBUG_OBJECT (self, "socket opened on UDP port %d",
g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (myaddr)));
g_object_unref (myaddr);
self->cancel = g_cancellable_new ();
self->made_cancel_fd =
g_cancellable_make_pollfd (self->cancel, &dummy_pollfd);
self->socket = socket;
self->servaddr = G_SOCKET_ADDRESS (servaddr);
self->thread = g_thread_try_new ("GstNetClientInternalClock",
gst_net_client_internal_clock_thread, self, &error);
if (error != NULL)
goto no_thread;
return TRUE;
/* ERRORS */
no_socket:
{
GST_ERROR_OBJECT (self, "socket_new() failed: %s", error->message);
g_error_free (error);
return FALSE;
}
bind_error:
{
GST_ERROR_OBJECT (self, "bind failed: %s", error->message);
g_error_free (error);
g_object_unref (socket);
return FALSE;
}
getsockname_error:
{
GST_ERROR_OBJECT (self, "get_local_address() failed: %s", error->message);
g_error_free (error);
g_object_unref (socket);
return FALSE;
}
failed_to_resolve:
{
GST_ERROR_OBJECT (self, "resolving '%s' failed: %s",
self->address, err->message);
g_clear_error (&err);
g_object_unref (resolver);
return FALSE;
}
no_thread:
{
GST_ERROR_OBJECT (self, "could not create thread: %s", error->message);
g_object_unref (self->servaddr);
self->servaddr = NULL;
g_object_unref (self->socket);
self->socket = NULL;
g_error_free (error);
return FALSE;
}
}
static GSocket *
gst_switch_server_listen (GstSwitchServer *srv, gint port,
gint *bound_port)
{
GError *err = NULL;
GInetAddress *addr;
GSocket *socket = NULL;
GSocketAddress *saddr;
GResolver *resolver;
gchar *ip;
*bound_port = 0;
/* look up name if we need to */
addr = g_inet_address_new_from_string (srv->host);
if (!addr) {
GList *results;
resolver = g_resolver_get_default ();
results = g_resolver_lookup_by_name (resolver, srv->host,
srv->cancellable, &err);
if (!results)
goto resolve_no_name;
addr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
ip = g_inet_address_to_string (addr);
saddr = g_inet_socket_address_new (addr, port);
g_object_unref (addr);
/* create the server listener socket */
socket = g_socket_new (g_socket_address_get_family (saddr),
G_SOCKET_TYPE_STREAM, G_SOCKET_PROTOCOL_TCP, &err);
if (!socket)
goto socket_new_failed;
/* bind it */
if (!g_socket_bind (socket, saddr, TRUE, &err))
goto socket_bind_failed;
g_object_unref (saddr);
/* listen on the socket */
g_socket_set_listen_backlog (socket, GST_SWITCH_SERVER_LISTEN_BACKLOG);
if (!g_socket_listen (socket, &err))
goto socket_listen_failed;
if (port == 0) {
saddr = g_socket_get_local_address (socket, NULL);
*bound_port = g_inet_socket_address_get_port ((GInetSocketAddress *) saddr);
g_object_unref (saddr);
} else {
*bound_port = port;
}
INFO ("Listening on %s (%s:%d)", srv->host, ip, *bound_port);
g_free (ip);
//g_atomic_int_set (&srv->bound_port, bound_port);
//g_object_notify (G_OBJECT (src), "bound-port");
return socket;
/* Errors Handling */
resolve_no_name:
{
ERROR ("resolve: %s", err->message);
g_object_unref (resolver);
g_object_unref (addr);
return NULL;
}
socket_new_failed:
{
ERROR ("new socket: %s", err->message);
g_clear_error (&err);
g_object_unref (saddr);
g_free (ip);
return NULL;
}
socket_bind_failed:
{
ERROR ("bind socket: %s", err->message);
g_clear_error (&err);
g_object_unref (saddr);
g_free (ip);
return NULL;
}
socket_listen_failed:
{
ERROR ("listen socket: %s", err->message);
g_clear_error (&err);
g_object_unref (saddr);
g_free (ip);
return NULL;
}
}
static gboolean
run (int argc, char **argv, GCancellable *cancellable, GError **error)
{
gboolean ret = FALSE;
g_autoptr(GOptionContext) context = NULL;
const char *dirpath;
OtTrivialHttpd appstruct = { 0, };
OtTrivialHttpd *app = &appstruct;
glnx_unref_object SoupServer *server = NULL;
g_autoptr(GFileMonitor) dirmon = NULL;
context = g_option_context_new ("[DIR] - Simple webserver");
g_option_context_add_main_entries (context, options, NULL);
app->root_dfd = -1;
if (!g_option_context_parse (context, &argc, &argv, error))
goto out;
if (argc > 1)
dirpath = argv[1];
else
dirpath = ".";
if (!glnx_opendirat (AT_FDCWD, dirpath, TRUE, &app->root_dfd, error))
goto out;
if (!(opt_random_500s_percentage >= 0 && opt_random_500s_percentage <= 99))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Invalid --random-500s=%u", opt_random_500s_percentage);
goto out;
}
if (opt_log)
{
GOutputStream *stream = NULL;
if (g_strcmp0 (opt_log, "-") == 0)
{
if (opt_daemonize)
{
ot_util_usage_error (context, "Cannot use --log-file=- and --daemonize at the same time", error);
goto out;
}
stream = G_OUTPUT_STREAM (g_unix_output_stream_new (STDOUT_FILENO, FALSE));
}
else
{
g_autoptr(GFile) log_file = NULL;
GFileOutputStream* log_stream;
log_file = g_file_new_for_path (opt_log);
log_stream = g_file_create (log_file,
G_FILE_CREATE_PRIVATE,
cancellable,
error);
if (!log_stream)
goto out;
stream = G_OUTPUT_STREAM (log_stream);
}
app->log = stream;
}
#if SOUP_CHECK_VERSION(2, 48, 0)
server = soup_server_new (SOUP_SERVER_SERVER_HEADER, "ostree-httpd ", NULL);
if (!soup_server_listen_all (server, opt_port, 0, error))
goto out;
#else
server = soup_server_new (SOUP_SERVER_PORT, opt_port,
SOUP_SERVER_SERVER_HEADER, "ostree-httpd ",
NULL);
#endif
soup_server_add_handler (server, NULL, httpd_callback, app, NULL);
if (opt_port_file)
{
g_autofree char *portstr = NULL;
#if SOUP_CHECK_VERSION(2, 48, 0)
GSList *listeners = soup_server_get_listeners (server);
g_autoptr(GSocket) listener = NULL;
g_autoptr(GSocketAddress) addr = NULL;
g_assert (listeners);
listener = g_object_ref (listeners->data);
g_slist_free (listeners);
listeners = NULL;
addr = g_socket_get_local_address (listener, error);
if (!addr)
goto out;
g_assert (G_IS_INET_SOCKET_ADDRESS (addr));
portstr = g_strdup_printf ("%u\n", g_inet_socket_address_get_port ((GInetSocketAddress*)addr));
#else
portstr = g_strdup_printf ("%u\n", soup_server_get_port (server));
#endif
if (g_strcmp0 ("-", opt_port_file) == 0)
{
fputs (portstr, stdout); // not g_print - this must go to stdout, not a handler
fflush (stdout);
}
else if (!g_file_set_contents (opt_port_file, portstr, strlen (portstr), error))
goto out;
}
#if !SOUP_CHECK_VERSION(2, 48, 0)
soup_server_run_async (server);
#endif
if (opt_daemonize)
{
pid_t pid = fork();
if (pid == -1)
{
int errsv = errno;
g_set_error_literal (error, G_IO_ERROR, g_io_error_from_errno (errsv),
g_strerror (errsv));
goto out;
}
else if (pid > 0)
{
ret = TRUE;
goto out;
}
/* Child, continue */
if (setsid () < 0)
err (1, "setsid");
/* Daemonising: close stdout/stderr so $() et al work on us */
if (freopen("/dev/null", "r", stdin) == NULL)
err (1, "freopen");
if (freopen("/dev/null", "w", stdout) == NULL)
err (1, "freopen");
if (freopen("/dev/null", "w", stderr) == NULL)
err (1, "freopen");
}
else
{
/* Since we're used for testing purposes, let's just do this by
* default. This ensures we exit when our parent does.
*/
if (prctl (PR_SET_PDEATHSIG, SIGTERM) != 0)
{
if (errno != ENOSYS)
{
glnx_set_error_from_errno (error);
goto out;
}
}
}
app->running = TRUE;
if (opt_autoexit)
{
gboolean is_symlink = FALSE;
g_autoptr(GFile) root = NULL;
g_autoptr(GFileInfo) info = NULL;
root = g_file_new_for_path (dirpath);
info = g_file_query_info (root,
G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error);
if (!info)
goto out;
is_symlink = g_file_info_get_is_symlink (info);
if (is_symlink)
dirmon = g_file_monitor_file (root, 0, cancellable, error);
else
dirmon = g_file_monitor_directory (root, 0, cancellable, error);
if (!dirmon)
goto out;
g_signal_connect (dirmon, "changed", G_CALLBACK (on_dir_changed), app);
}
httpd_log (app, "serving at root %s\n", dirpath);
while (app->running)
g_main_context_iteration (NULL, TRUE);
ret = TRUE;
out:
if (app->root_dfd != -1)
(void) close (app->root_dfd);
g_clear_object (&app->log);
return ret;
}
void *
_thread (void *user_data)
{
ArvGvFakeCamera *gv_fake_camera = user_data;
ArvBuffer *image_buffer = NULL;
GError *error = NULL;
GSocketAddress *stream_address = NULL;
void *packet_buffer;
size_t packet_size;
size_t payload = 0;
guint16 block_id;
ptrdiff_t offset;
guint32 gv_packet_size;
GInputVector input_vector;
int n_events;
gboolean is_streaming = FALSE;
input_vector.buffer = g_malloc0 (ARV_GV_FAKE_CAMERA_BUFFER_SIZE);
input_vector.size = ARV_GV_FAKE_CAMERA_BUFFER_SIZE;
packet_buffer = g_malloc (ARV_GV_FAKE_CAMERA_BUFFER_SIZE);
do {
guint64 next_timestamp_us;
guint64 sleep_time_us;
if (is_streaming) {
sleep_time_us = arv_fake_camera_get_sleep_time_for_next_frame (gv_fake_camera->priv->camera, &next_timestamp_us);
} else {
sleep_time_us = 100000;
next_timestamp_us = g_get_real_time () + sleep_time_us;
}
do {
gint timeout_ms;
timeout_ms = MIN (100, (next_timestamp_us - g_get_real_time ()) / 1000LL);
if (timeout_ms < 0)
timeout_ms = 0;
n_events = g_poll (gv_fake_camera->priv->gvcp_fds, 2, timeout_ms);
if (n_events > 0) {
GSocketAddress *remote_address = NULL;
int count;
count = g_socket_receive_message (gv_fake_camera->priv->gvcp_socket,
&remote_address, &input_vector, 1, NULL, NULL,
NULL, NULL, NULL);
if (count > 0) {
if (handle_control_packet (gv_fake_camera, gv_fake_camera->priv->gvcp_socket,
remote_address, input_vector.buffer, count))
arv_debug_device ("[GvFakeCamera::thread] Control packet received");
}
g_clear_object (&remote_address);
if (gv_fake_camera->priv->discovery_socket != NULL) {
count = g_socket_receive_message (gv_fake_camera->priv->discovery_socket,
&remote_address, &input_vector, 1, NULL, NULL,
NULL, NULL, NULL);
if (count > 0) {
if (handle_control_packet (gv_fake_camera, gv_fake_camera->priv->discovery_socket,
remote_address, input_vector.buffer, count))
arv_debug_device ("[GvFakeCamera::thread]"
" Control packet received on discovery socket\n");
}
g_clear_object (&remote_address);
}
if (arv_fake_camera_get_control_channel_privilege (gv_fake_camera->priv->camera) == 0 ||
arv_fake_camera_get_acquisition_status (gv_fake_camera->priv->camera) == 0) {
if (stream_address != NULL) {
g_object_unref (stream_address);
stream_address = NULL;
g_object_unref (image_buffer);
image_buffer = NULL;
arv_debug_stream_thread ("[GvFakeCamera::thread] Stop stream");
}
is_streaming = FALSE;
}
}
} while (!g_atomic_int_get (&gv_fake_camera->priv->cancel) && g_get_real_time () < next_timestamp_us);
if (arv_fake_camera_get_control_channel_privilege (gv_fake_camera->priv->camera) != 0 &&
arv_fake_camera_get_acquisition_status (gv_fake_camera->priv->camera) != 0) {
if (stream_address == NULL) {
GInetAddress *inet_address;
char *inet_address_string;
stream_address = arv_fake_camera_get_stream_address (gv_fake_camera->priv->camera);
inet_address = g_inet_socket_address_get_address
(G_INET_SOCKET_ADDRESS (stream_address));
inet_address_string = g_inet_address_to_string (inet_address);
arv_debug_stream_thread ("[GvFakeCamera::thread] Start stream to %s (%d)",
inet_address_string,
g_inet_socket_address_get_port
(G_INET_SOCKET_ADDRESS (stream_address)));
g_free (inet_address_string);
payload = arv_fake_camera_get_payload (gv_fake_camera->priv->camera);
image_buffer = arv_buffer_new (payload, NULL);
}
arv_fake_camera_fill_buffer (gv_fake_camera->priv->camera, image_buffer, &gv_packet_size);
arv_debug_stream_thread ("[GvFakeCamera::thread] Send frame %d", image_buffer->priv->frame_id);
block_id = 0;
packet_size = ARV_GV_FAKE_CAMERA_BUFFER_SIZE;
arv_gvsp_packet_new_data_leader (image_buffer->priv->frame_id,
block_id,
image_buffer->priv->timestamp_ns,
image_buffer->priv->pixel_format,
image_buffer->priv->width, image_buffer->priv->height,
image_buffer->priv->x_offset, image_buffer->priv->y_offset,
packet_buffer, &packet_size);
g_socket_send_to (gv_fake_camera->priv->gvsp_socket, stream_address,
packet_buffer, packet_size, NULL, &error);
if (error != NULL) {
arv_warning_stream_thread ("[GvFakeCamera::thread] Failed to send leader for frame %d: %s",
image_buffer->priv->frame_id, error->message);
g_clear_error (&error);
}
block_id++;
offset = 0;
while (offset < payload) {
size_t data_size;
data_size = MIN (gv_packet_size - ARV_GVSP_PACKET_PROTOCOL_OVERHEAD,
payload - offset);
packet_size = ARV_GV_FAKE_CAMERA_BUFFER_SIZE;
arv_gvsp_packet_new_data_block (image_buffer->priv->frame_id, block_id,
data_size, ((char *) image_buffer->priv->data) + offset,
packet_buffer, &packet_size);
g_socket_send_to (gv_fake_camera->priv->gvsp_socket, stream_address,
packet_buffer, packet_size, NULL, &error);
if (error != NULL) {
arv_debug_stream_thread ("[GvFakeCamera::thread] Failed to send frame block %d for frame: %s",
block_id,
image_buffer->priv->frame_id,
error->message);
g_clear_error (&error);
}
offset += data_size;
block_id++;
}
packet_size = ARV_GV_FAKE_CAMERA_BUFFER_SIZE;
arv_gvsp_packet_new_data_trailer (image_buffer->priv->frame_id, block_id,
packet_buffer, &packet_size);
g_socket_send_to (gv_fake_camera->priv->gvsp_socket, stream_address,
packet_buffer, packet_size, NULL, &error);
if (error != NULL) {
arv_debug_stream_thread ("[GvFakeCamera::thread] Failed to send trailer for frame %d: %s",
image_buffer->priv->frame_id,
error->message);
g_clear_error (&error);
}
is_streaming = TRUE;
}
} while (!g_atomic_int_get (&gv_fake_camera->priv->cancel));
if (stream_address != NULL)
g_object_unref (stream_address);
if (image_buffer != NULL)
g_object_unref (image_buffer);
g_free (packet_buffer);
g_free (input_vector.buffer);
return NULL;
}
static gboolean
gst_tcp_mix_src_listen (GstTCPMixSrc * src, GstTCPMixSrcPad * pad)
{
GError *err = NULL;
GInetAddress *addr;
GSocketAddress *saddr;
GResolver *resolver;
gint bound_port = 0;
gchar *ip;
/* look up name if we need to */
addr = g_inet_address_new_from_string (src->host);
if (!addr) {
GList *results;
resolver = g_resolver_get_default ();
results = g_resolver_lookup_by_name (resolver, src->host,
src->cancellable, &err);
if (!results)
goto resolve_no_name;
addr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
/* get IP address */
ip = g_inet_address_to_string (addr);
saddr = g_inet_socket_address_new (addr, src->server_port);
g_object_unref (addr);
/* create the server listener socket */
src->server_socket = g_socket_new (g_socket_address_get_family (saddr),
G_SOCKET_TYPE_STREAM, G_SOCKET_PROTOCOL_TCP, &err);
if (!src->server_socket)
goto socket_new_failed;
/* bind it */
if (!g_socket_bind (src->server_socket, saddr, TRUE, &err))
goto socket_bind_failed;
g_object_unref (saddr);
g_socket_set_listen_backlog (src->server_socket, TCP_BACKLOG);
if (!g_socket_listen (src->server_socket, &err))
goto socket_listen_failed;
GST_OBJECT_FLAG_SET (src, GST_TCP_MIX_SRC_OPEN);
if (src->server_port == 0) {
saddr = g_socket_get_local_address (src->server_socket, NULL);
bound_port = g_inet_socket_address_get_port ((GInetSocketAddress *) saddr);
g_object_unref (saddr);
} else {
bound_port = src->server_port;
}
GST_DEBUG_OBJECT (src, "Listening on %s (%s:%d)", src->host, ip, bound_port);
g_free (ip);
g_atomic_int_set (&src->bound_port, bound_port);
g_object_notify (G_OBJECT (src), "bound-port");
return TRUE;
/* Handling Errors */
resolve_no_name:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (src, "Cancelled name resolval");
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to resolve host '%s': %s", src->host, err->message));
}
g_clear_error (&err);
g_object_unref (resolver);
return FALSE;
}
socket_new_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to create socket: %s", err->message));
g_clear_error (&err);
g_object_unref (saddr);
return FALSE;
}
socket_bind_failed:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (src, "Cancelled binding");
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to bind on host '%s:%d': %s", src->host, src->server_port,
err->message));
}
g_clear_error (&err);
g_object_unref (saddr);
gst_tcp_mix_src_stop (src, pad);
return FALSE;
}
socket_listen_failed:
{
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (src, "Cancelled listening");
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Failed to listen on host '%s:%d': %s", src->host,
src->server_port, err->message));
}
g_clear_error (&err);
gst_tcp_mix_src_stop (src, pad);
return FALSE;
}
}
static gboolean
cockpit_web_server_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
CockpitWebServer *server = COCKPIT_WEB_SERVER (initable);
GSocketAddress *socket_address = NULL;
GSocketAddress *result_address = NULL;
gboolean ret = FALSE;
gboolean failed = FALSE;
int n, fd;
server->socket_service = g_socket_service_new ();
n = sd_listen_fds (0);
if (n > 0)
{
/* We got file descriptors passed in, use those. */
for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++)
{
GSocket *s = NULL;
gboolean b;
int type;
socklen_t l = sizeof (type);
/*
* HACK: Workaround g_error() happy code in GSocket
* https://bugzilla.gnome.org/show_bug.cgi?id=746339
*/
if (getsockopt (fd, SOL_SOCKET, SO_TYPE, &type, &l) < 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"invalid socket passed via systemd activation: %d: %s", fd, g_strerror (errno));
goto out;
}
s = g_socket_new_from_fd (fd, error);
if (s == NULL)
{
g_prefix_error (error, "Failed to acquire passed socket %i: ", fd);
goto out;
}
b = cockpit_web_server_add_socket (server, s, error);
g_object_unref (s);
if (!b)
{
g_prefix_error (error, "Failed to add listener for socket %i: ", fd);
goto out;
}
}
server->socket_activated = TRUE;
}
else
{
if (server->address)
{
socket_address = g_inet_socket_address_new (server->address, server->port);
if (socket_address)
{
failed = !g_socket_listener_add_address (G_SOCKET_LISTENER (server->socket_service),
socket_address, G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_DEFAULT,
NULL, &result_address,
error);
if (!failed)
{
server->port = g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (result_address));
g_object_unref (result_address);
}
g_object_unref (socket_address);
}
}
/* No fds passed in, let's listen on our own. */
else if (server->port == 0)
{
server->port = g_socket_listener_add_any_inet_port (G_SOCKET_LISTENER (server->socket_service),
NULL, error);
failed = (server->port == 0);
}
else if (server->port > 0)
{
failed = !g_socket_listener_add_inet_port (G_SOCKET_LISTENER (server->socket_service),
server->port, NULL, error);
}
if (failed)
{
g_prefix_error (error, "Failed to bind to port %d: ", server->port);
goto out;
}
}
g_signal_connect (server->socket_service,
"incoming",
G_CALLBACK (on_incoming),
server);
ret = TRUE;
out:
return ret;
}
static gboolean
do_one_attempt (gpointer user_data)
{
GError *local_error = NULL;
MinCloudAgentApp *self = user_data;
gs_free char *uri_str = NULL;
gs_unref_object SoupRequest *request = NULL;
gs_unref_object GInputStream *instream = NULL;
gs_unref_object GFileOutputStream *outstream = NULL;
gs_unref_object GFile *authorized_keys_path = NULL;
gs_unref_object SoupMessage *msg = NULL;
SoupURI *uri = NULL;
const int max_request_failures = 5;
const char *state_description = NULL;
/* Skip over already completed states */
again:
switch (self->state)
{
case MCA_STATE_USER_DATA:
if (g_file_query_exists (self->userdata_done_stamp, NULL))
{
self->state++;
goto again;
}
break;
case MCA_STATE_OPENSSH_KEY:
if (g_file_query_exists (self->authorized_keys_path, NULL))
{
self->state++;
goto again;
}
break;
case MCA_STATE_DONE:
goto out;
}
uri = soup_uri_new (NULL);
soup_uri_set_scheme (uri, "http");
{
gs_free char *addr_str = g_inet_address_to_string (self->addr);
soup_uri_set_host (uri, addr_str);
}
soup_uri_set_port (uri, g_inet_socket_address_get_port (self->addr_port));
switch (self->state)
{
case MCA_STATE_USER_DATA:
soup_uri_set_path (uri, "/2009-04-04/user-data");
state_description = "user-data";
break;
case MCA_STATE_OPENSSH_KEY:
soup_uri_set_path (uri, "/2009-04-04/meta-data/public-keys/0/openssh-key");
state_description = "openssh-key";
break;
case MCA_STATE_DONE:
g_assert_not_reached ();
}
uri_str = soup_uri_to_string (uri, FALSE);
g_print ("Requesting '%s'...\n", uri_str);
request = soup_session_request_uri (self->session, uri, &local_error);
soup_uri_free (uri);
if (!request)
goto out;
instream = soup_request_send (request, NULL, &local_error);
if (!instream)
goto out;
msg = soup_request_http_get_message ((SoupRequestHTTP*) request);
if (!SOUP_STATUS_IS_SUCCESSFUL (msg->status_code))
{
switch (msg->status_code)
{
case 404:
case 410:
{
gs_log_structured_print_id_v (MCA_NOT_FOUND_ID, "No %s found", state_description);
g_clear_error (&local_error);
/* Note fallthrough to out, where we'll advance to the
next state */
goto out;
}
default:
/* Don't actually set the error, we will just continue to
* the next phase.
*/
gs_log_structured_print_id_v (MCA_TIMEOUT_ID,
"Error fetching %s: %u %s",
uri_str,
msg->status_code,
soup_status_get_phrase (msg->status_code));
goto out;
}
}
switch (self->state)
{
case MCA_STATE_USER_DATA:
if (!handle_userdata_script (self, instream, self->cancellable,
&local_error))
goto out;
break;
case MCA_STATE_OPENSSH_KEY:
if (!handle_install_authorized_keys (self, instream, self->cancellable,
&local_error))
goto out;
break;
default:
g_assert_not_reached ();
}
g_assert (self->state != MCA_STATE_DONE);
self->state++;
self->request_failure_count = 0;
out:
if (local_error)
{
self->request_failure_count++;
if (self->request_failure_count >= max_request_failures)
{
g_error_free (local_error);
gs_log_structured_print_id_v (MCA_TIMEOUT_ID,
"Reached maximum failed attempts (%u) to fetch metadata",
self->request_failure_count);
self->do_one_attempt_id = 0;
self->running = FALSE;
}
else
{
gs_log_structured_print_id_v (MCA_REQUEST_FAILED_ID,
"Request failed (count: %u): %s", self->request_failure_count,
local_error->message);
g_error_free (local_error);
self->do_one_attempt_id = g_timeout_add_seconds (self->request_failure_count,
do_one_attempt, self);
}
}
else
{
/* If we advanced in state, schedule the next callback in an
* idle so we're consistently scheduled out of an idle.
*/
if (self->state != MCA_STATE_DONE)
self->do_one_attempt_id = g_idle_add (do_one_attempt, self);
else
{
self->do_one_attempt_id = 0;
self->running = FALSE;
}
}
return FALSE;
}
static GSocketAddress *
g_proxy_address_enumerator_next (GSocketAddressEnumerator *enumerator,
GCancellable *cancellable,
GError **error)
{
GProxyAddressEnumeratorPrivate *priv = GET_PRIVATE (enumerator);
GSocketAddress *result = NULL;
GError *first_error = NULL;
if (priv->proxies == NULL)
{
GProxyResolver *resolver = g_proxy_resolver_get_default ();
priv->proxies = g_proxy_resolver_lookup (resolver,
priv->dest_uri,
cancellable,
error);
priv->next_proxy = priv->proxies;
if (priv->proxies == NULL)
return NULL;
}
while (result == NULL && (*priv->next_proxy || priv->addr_enum))
{
gchar *dest_hostname;
gchar *dest_protocol;
GInetSocketAddress *inetsaddr;
GInetAddress *inetaddr;
guint16 port;
next_enumerator (priv);
if (!priv->addr_enum)
continue;
if (priv->proxy_address == NULL)
{
priv->proxy_address = g_socket_address_enumerator_next (
priv->addr_enum,
cancellable,
first_error ? NULL : &first_error);
}
if (priv->proxy_address == NULL)
{
g_object_unref (priv->addr_enum);
priv->addr_enum = NULL;
if (priv->dest_ips)
{
g_resolver_free_addresses (priv->dest_ips);
priv->dest_ips = NULL;
}
continue;
}
if (strcmp ("direct", priv->proxy_type) == 0)
{
result = priv->proxy_address;
priv->proxy_address = NULL;
continue;
}
if (!priv->supports_hostname)
{
GInetAddress *dest_ip;
if (!priv->dest_ips)
{
GResolver *resolver;
resolver = g_resolver_get_default();
priv->dest_ips = g_resolver_lookup_by_name (resolver,
priv->dest_hostname,
cancellable,
first_error ? NULL : &first_error);
g_object_unref (resolver);
if (!priv->dest_ips)
{
g_object_unref (priv->proxy_address);
priv->proxy_address = NULL;
continue;
}
}
if (!priv->next_dest_ip)
priv->next_dest_ip = priv->dest_ips;
dest_ip = G_INET_ADDRESS (priv->next_dest_ip->data);
dest_hostname = g_inet_address_to_string (dest_ip);
priv->next_dest_ip = g_list_next (priv->next_dest_ip);
}
else
{
dest_hostname = g_strdup (priv->dest_hostname);
}
dest_protocol = g_uri_parse_scheme (priv->dest_uri);
g_return_val_if_fail (G_IS_INET_SOCKET_ADDRESS (priv->proxy_address),
NULL);
inetsaddr = G_INET_SOCKET_ADDRESS (priv->proxy_address);
inetaddr = g_inet_socket_address_get_address (inetsaddr);
port = g_inet_socket_address_get_port (inetsaddr);
result = g_object_new (G_TYPE_PROXY_ADDRESS,
"address", inetaddr,
"port", port,
"protocol", priv->proxy_type,
"destination-protocol", dest_protocol,
"destination-hostname", dest_hostname,
"destination-port", priv->dest_port,
"username", priv->proxy_username,
"password", priv->proxy_password,
"uri", priv->proxy_uri,
NULL);
g_free (dest_hostname);
g_free (dest_protocol);
if (priv->supports_hostname || priv->next_dest_ip == NULL)
{
g_object_unref (priv->proxy_address);
priv->proxy_address = NULL;
}
}
if (result == NULL && first_error)
g_propagate_error (error, first_error);
else if (first_error)
g_error_free (first_error);
return result;
}
static void
return_result (GTask *task)
{
GProxyAddressEnumeratorPrivate *priv = g_task_get_task_data (task);
GSocketAddress *result;
if (strcmp ("direct", priv->proxy_type) == 0)
{
result = priv->proxy_address;
priv->proxy_address = NULL;
}
else
{
gchar *dest_hostname, *dest_protocol;
GInetSocketAddress *inetsaddr;
GInetAddress *inetaddr;
guint16 port;
if (!priv->supports_hostname)
{
GInetAddress *dest_ip;
if (!priv->next_dest_ip)
priv->next_dest_ip = priv->dest_ips;
dest_ip = G_INET_ADDRESS (priv->next_dest_ip->data);
dest_hostname = g_inet_address_to_string (dest_ip);
priv->next_dest_ip = g_list_next (priv->next_dest_ip);
}
else
{
dest_hostname = g_strdup (priv->dest_hostname);
}
dest_protocol = g_uri_parse_scheme (priv->dest_uri);
g_return_if_fail (G_IS_INET_SOCKET_ADDRESS (priv->proxy_address));
inetsaddr = G_INET_SOCKET_ADDRESS (priv->proxy_address);
inetaddr = g_inet_socket_address_get_address (inetsaddr);
port = g_inet_socket_address_get_port (inetsaddr);
result = g_object_new (G_TYPE_PROXY_ADDRESS,
"address", inetaddr,
"port", port,
"protocol", priv->proxy_type,
"destination-protocol", dest_protocol,
"destination-hostname", dest_hostname,
"destination-port", priv->dest_port,
"username", priv->proxy_username,
"password", priv->proxy_password,
"uri", priv->proxy_uri,
NULL);
g_free (dest_hostname);
g_free (dest_protocol);
if (priv->supports_hostname || priv->next_dest_ip == NULL)
{
g_object_unref (priv->proxy_address);
priv->proxy_address = NULL;
}
}
g_task_return_pointer (task, result, g_object_unref);
g_object_unref (task);
}
void *
arv_fake_gv_camera_thread (void *user_data)
{
ArvFakeGvCamera *gv_camera = user_data;
ArvBuffer *image_buffer = NULL;
GError *error = NULL;
GSocketAddress *stream_address = NULL;
void *packet_buffer;
size_t packet_size;
size_t payload = 0;
guint16 block_id;
ptrdiff_t offset;
guint32 gv_packet_size;
packet_buffer = g_malloc (ARV_FAKE_GV_CAMERA_BUFFER_SIZE);
do {
if (arv_fake_camera_get_control_channel_privilege (gv_camera->camera) == 0 ||
arv_fake_camera_get_acquisition_status (gv_camera->camera) == 0) {
if (stream_address != NULL) {
g_object_unref (stream_address);
stream_address = NULL;
g_object_unref (image_buffer);
image_buffer = NULL;
arv_debug_stream_thread ("[FakeGvCamera::stream_thread] Stop stream");
}
g_usleep (100000);
} else {
if (stream_address == NULL) {
GInetAddress *inet_address;
char *inet_address_string;
stream_address = arv_fake_camera_get_stream_address (gv_camera->camera);
inet_address = g_inet_socket_address_get_address
(G_INET_SOCKET_ADDRESS (stream_address));
inet_address_string = g_inet_address_to_string (inet_address);
arv_debug_stream_thread ("[FakeGvCamera::stream_thread] Start stream to %s (%d)",
inet_address_string,
g_inet_socket_address_get_port
(G_INET_SOCKET_ADDRESS (stream_address)));
g_free (inet_address_string);
payload = arv_fake_camera_get_payload (gv_camera->camera);
image_buffer = arv_buffer_new (payload, NULL);
}
arv_fake_camera_wait_for_next_frame (gv_camera->camera);
arv_fake_camera_fill_buffer (gv_camera->camera, image_buffer, &gv_packet_size);
block_id = 0;
packet_size = ARV_FAKE_GV_CAMERA_BUFFER_SIZE;
arv_gvsp_packet_new_data_leader (image_buffer->frame_id,
block_id,
image_buffer->timestamp_ns,
image_buffer->pixel_format,
image_buffer->width, image_buffer->height,
image_buffer->x_offset, image_buffer->y_offset,
packet_buffer, &packet_size);
g_socket_send_to (gv_camera->gvsp_socket, stream_address,
packet_buffer, packet_size, NULL, &error);
if (error != NULL) {
arv_warning_stream_thread ("[ArvFakeGvCamera::stream_thread] Socket send error [%s]",
error->message);
g_error_free (error);
error = NULL;
}
block_id++;
offset = 0;
while (offset < payload) {
size_t data_size;
data_size = MIN (gv_packet_size - ARV_GVSP_PACKET_PROTOCOL_OVERHEAD,
payload - offset);
packet_size = ARV_FAKE_GV_CAMERA_BUFFER_SIZE;
arv_gvsp_packet_new_data_block (image_buffer->frame_id, block_id,
data_size, ((char *) image_buffer->data) + offset,
packet_buffer, &packet_size);
g_socket_send_to (gv_camera->gvsp_socket, stream_address,
packet_buffer, packet_size, NULL, NULL);
offset += data_size;
block_id++;
}
packet_size = ARV_FAKE_GV_CAMERA_BUFFER_SIZE;
arv_gvsp_packet_new_data_trailer (image_buffer->frame_id, block_id,
packet_buffer, &packet_size);
g_socket_send_to (gv_camera->gvsp_socket, stream_address,
packet_buffer, packet_size, NULL, NULL);
}
} while (!cancel);
if (stream_address != NULL)
g_object_unref (stream_address);
if (image_buffer != NULL)
g_object_unref (image_buffer);
g_free (packet_buffer);
return NULL;
}
/* create a socket for sending to remote machine */
static gboolean
gst_udpsrc_start (GstBaseSrc * bsrc)
{
GstUDPSrc *src;
GInetAddress *addr, *bind_addr;
GSocketAddress *bind_saddr;
GResolver *resolver;
GError *err = NULL;
src = GST_UDPSRC (bsrc);
if (src->socket == NULL) {
/* need to allocate a socket */
GST_DEBUG_OBJECT (src, "allocating socket for %s:%d", src->host, src->port);
addr = g_inet_address_new_from_string (src->host);
if (!addr) {
GList *results;
GST_DEBUG_OBJECT (src, "resolving IP address for host %s", src->host);
resolver = g_resolver_get_default ();
results =
g_resolver_lookup_by_name (resolver, src->host, src->cancellable,
&err);
if (!results)
goto name_resolve;
addr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
#ifndef GST_DISABLE_GST_DEBUG
{
gchar *ip = g_inet_address_to_string (addr);
GST_DEBUG_OBJECT (src, "IP address for host %s is %s", src->host, ip);
g_free (ip);
}
#endif
if ((src->used_socket =
g_socket_new (g_inet_address_get_family (addr),
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL)
goto no_socket;
src->external_socket = FALSE;
GST_DEBUG_OBJECT (src, "got socket %p", src->used_socket);
if (src->addr)
g_object_unref (src->addr);
src->addr =
G_INET_SOCKET_ADDRESS (g_inet_socket_address_new (addr, src->port));
GST_DEBUG_OBJECT (src, "binding on port %d", src->port);
if (g_inet_address_get_is_multicast (addr))
bind_addr = g_inet_address_new_any (g_inet_address_get_family (addr));
else
bind_addr = G_INET_ADDRESS (g_object_ref (addr));
g_object_unref (addr);
bind_saddr = g_inet_socket_address_new (bind_addr, src->port);
g_object_unref (bind_addr);
if (!g_socket_bind (src->used_socket, bind_saddr, src->reuse, &err))
goto bind_error;
g_object_unref (bind_saddr);
} else {
GST_DEBUG_OBJECT (src, "using provided socket %p", src->socket);
/* we use the configured socket, try to get some info about it */
src->used_socket = G_SOCKET (g_object_ref (src->socket));
src->external_socket = TRUE;
if (src->addr)
g_object_unref (src->addr);
src->addr =
G_INET_SOCKET_ADDRESS (g_socket_get_local_address (src->used_socket,
&err));
if (!src->addr)
goto getsockname_error;
}
#if GLIB_CHECK_VERSION (2, 35, 7)
{
gint val = 0;
if (src->buffer_size != 0) {
GError *opt_err = NULL;
GST_INFO_OBJECT (src, "setting udp buffer of %d bytes", src->buffer_size);
/* set buffer size, Note that on Linux this is typically limited to a
* maximum of around 100K. Also a minimum of 128 bytes is required on
* Linux. */
if (!g_socket_set_option (src->used_socket, SOL_SOCKET, SO_RCVBUF,
src->buffer_size, &opt_err)) {
GST_ELEMENT_WARNING (src, RESOURCE, SETTINGS, (NULL),
("Could not create a buffer of requested %d bytes: %s",
src->buffer_size, opt_err->message));
g_error_free (opt_err);
opt_err = NULL;
}
}
/* read the value of the receive buffer. Note that on linux this returns
* 2x the value we set because the kernel allocates extra memory for
* metadata. The default on Linux is about 100K (which is about 50K
* without metadata) */
if (g_socket_get_option (src->used_socket, SOL_SOCKET, SO_RCVBUF, &val,
NULL)) {
GST_INFO_OBJECT (src, "have udp buffer of %d bytes", val);
} else {
GST_DEBUG_OBJECT (src, "could not get udp buffer size");
}
}
#elif defined (SO_RCVBUF)
{
gint rcvsize, ret;
socklen_t len;
len = sizeof (rcvsize);
if (src->buffer_size != 0) {
rcvsize = src->buffer_size;
GST_DEBUG_OBJECT (src, "setting udp buffer of %d bytes", rcvsize);
/* set buffer size, Note that on Linux this is typically limited to a
* maximum of around 100K. Also a minimum of 128 bytes is required on
* Linux. */
ret =
setsockopt (g_socket_get_fd (src->used_socket), SOL_SOCKET, SO_RCVBUF,
(void *) &rcvsize, len);
if (ret != 0) {
GST_ELEMENT_WARNING (src, RESOURCE, SETTINGS, (NULL),
("Could not create a buffer of requested %d bytes, %d: %s (%d)",
rcvsize, ret, g_strerror (errno), errno));
}
}
/* read the value of the receive buffer. Note that on linux this returns 2x the
* value we set because the kernel allocates extra memory for metadata.
* The default on Linux is about 100K (which is about 50K without metadata) */
ret =
getsockopt (g_socket_get_fd (src->used_socket), SOL_SOCKET, SO_RCVBUF,
(void *) &rcvsize, &len);
if (ret == 0)
GST_DEBUG_OBJECT (src, "have udp buffer of %d bytes", rcvsize);
else
GST_DEBUG_OBJECT (src, "could not get udp buffer size");
}
#else
if (src->buffer_size != 0) {
GST_WARNING_OBJECT (src, "don't know how to set udp buffer size on this "
"OS. Consider upgrading your GLib to >= 2.35.7 and re-compiling the "
"GStreamer udp plugin");
}
#endif
g_socket_set_broadcast (src->used_socket, TRUE);
if (src->auto_multicast
&&
g_inet_address_get_is_multicast (g_inet_socket_address_get_address
(src->addr))) {
GST_DEBUG_OBJECT (src, "joining multicast group %s", src->host);
if (!g_socket_join_multicast_group (src->used_socket,
g_inet_socket_address_get_address (src->addr),
FALSE, src->multi_iface, &err))
goto membership;
}
/* NOTE: sockaddr_in.sin_port works for ipv4 and ipv6 because sin_port
* follows ss_family on both */
{
GInetSocketAddress *addr;
guint16 port;
addr =
G_INET_SOCKET_ADDRESS (g_socket_get_local_address (src->used_socket,
&err));
if (!addr)
goto getsockname_error;
port = g_inet_socket_address_get_port (addr);
GST_DEBUG_OBJECT (src, "bound, on port %d", port);
if (port != src->port) {
src->port = port;
GST_DEBUG_OBJECT (src, "notifying port %d", port);
g_object_notify (G_OBJECT (src), "port");
}
g_object_unref (addr);
}
return TRUE;
/* ERRORS */
name_resolve:
{
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
("Name resolval failed: %s", err->message));
g_clear_error (&err);
g_object_unref (resolver);
return FALSE;
}
no_socket:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("no socket error: %s", err->message));
g_clear_error (&err);
g_object_unref (addr);
return FALSE;
}
bind_error:
{
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
("bind failed: %s", err->message));
g_clear_error (&err);
g_object_unref (bind_saddr);
gst_udpsrc_stop (GST_BASE_SRC (src));
return FALSE;
}
membership:
{
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
("could add membership: %s", err->message));
g_clear_error (&err);
gst_udpsrc_stop (GST_BASE_SRC (src));
return FALSE;
}
getsockname_error:
{
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
("getsockname failed: %s", err->message));
g_clear_error (&err);
gst_udpsrc_stop (GST_BASE_SRC (src));
return FALSE;
}
}
static gboolean
gst_net_client_clock_start (GstNetClientClock * self)
{
GSocketAddress *servaddr;
GSocketAddress *myaddr;
GInetAddress *inetaddr;
GSocket *socket;
GError *error = NULL;
g_return_val_if_fail (self->priv->address != NULL, FALSE);
g_return_val_if_fail (self->priv->servaddr == NULL, FALSE);
socket = g_socket_new (G_SOCKET_FAMILY_IPV4, G_SOCKET_TYPE_DATAGRAM,
G_SOCKET_PROTOCOL_UDP, &error);
if (socket == NULL)
goto no_socket;
/* check address we're bound to, mostly for debugging purposes */
myaddr = g_socket_get_local_address (socket, &error);
if (myaddr == NULL)
goto getsockname_error;
GST_DEBUG_OBJECT (self, "socket opened on UDP port %hd",
g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (myaddr)));
g_object_unref (myaddr);
/* create target address */
inetaddr = g_inet_address_new_from_string (self->priv->address);
if (inetaddr == NULL)
goto bad_address;
servaddr = g_inet_socket_address_new (inetaddr, self->priv->port);
g_object_unref (inetaddr);
g_assert (servaddr != NULL);
GST_DEBUG_OBJECT (self, "will communicate with %s:%d", self->priv->address,
self->priv->port);
self->priv->cancel = g_cancellable_new ();
self->priv->socket = socket;
self->priv->servaddr = G_SOCKET_ADDRESS (servaddr);
self->priv->thread = g_thread_try_new ("GstNetClientClock",
gst_net_client_clock_thread, self, &error);
if (error != NULL)
goto no_thread;
return TRUE;
/* ERRORS */
no_socket:
{
GST_ERROR_OBJECT (self, "socket_new() failed: %s", error->message);
g_error_free (error);
return FALSE;
}
getsockname_error:
{
GST_ERROR_OBJECT (self, "get_local_address() failed: %s", error->message);
g_error_free (error);
g_object_unref (socket);
return FALSE;
}
bad_address:
{
GST_ERROR_OBJECT (self, "inet_address_new_from_string('%s') failed",
self->priv->address);
g_object_unref (socket);
return FALSE;
}
no_thread:
{
GST_ERROR_OBJECT (self, "could not create thread: %s", error->message);
g_object_unref (self->priv->servaddr);
self->priv->servaddr = NULL;
g_object_unref (self->priv->socket);
self->priv->socket = NULL;
g_error_free (error);
return FALSE;
}
}
/* note that address_entry has already been validated =>
* both host and port (guaranteed to be a number in [0, 65535]) are set (family is optional)
*/
static gboolean
try_tcp (GDBusServer *server,
const gchar *address_entry,
GHashTable *key_value_pairs,
gboolean do_nonce,
GError **error)
{
gboolean ret;
const gchar *host;
const gchar *port;
gint port_num;
GResolver *resolver;
GList *resolved_addresses;
GList *l;
ret = FALSE;
resolver = NULL;
resolved_addresses = NULL;
host = g_hash_table_lookup (key_value_pairs, "host");
port = g_hash_table_lookup (key_value_pairs, "port");
/* family = g_hash_table_lookup (key_value_pairs, "family"); */
if (g_hash_table_lookup (key_value_pairs, "noncefile") != NULL)
{
g_set_error_literal (error,
G_IO_ERROR,
G_IO_ERROR_INVALID_ARGUMENT,
_("Cannot specify nonce file when creating a server"));
goto out;
}
if (host == NULL)
host = "localhost";
if (port == NULL)
port = "0";
port_num = strtol (port, NULL, 10);
resolver = g_resolver_get_default ();
resolved_addresses = g_resolver_lookup_by_name (resolver,
host,
NULL,
error);
if (resolved_addresses == NULL)
goto out;
/* TODO: handle family */
for (l = resolved_addresses; l != NULL; l = l->next)
{
GInetAddress *address = G_INET_ADDRESS (l->data);
GSocketAddress *socket_address;
GSocketAddress *effective_address;
socket_address = g_inet_socket_address_new (address, port_num);
if (!g_socket_listener_add_address (server->listener,
socket_address,
G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_TCP,
NULL, /* GObject *source_object */
&effective_address,
error))
{
g_object_unref (socket_address);
goto out;
}
if (port_num == 0)
/* make sure we allocate the same port number for other listeners */
port_num = g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (effective_address));
g_object_unref (effective_address);
g_object_unref (socket_address);
}
if (do_nonce)
{
gint fd;
guint n;
gsize bytes_written;
gsize bytes_remaining;
char *file_escaped;
server->nonce = g_new0 (guchar, 16);
for (n = 0; n < 16; n++)
server->nonce[n] = g_random_int_range (0, 256);
fd = g_file_open_tmp ("gdbus-nonce-file-XXXXXX",
&server->nonce_file,
error);
if (fd == -1)
{
g_socket_listener_close (server->listener);
goto out;
}
again:
bytes_written = 0;
bytes_remaining = 16;
while (bytes_remaining > 0)
{
gssize ret;
ret = write (fd, server->nonce + bytes_written, bytes_remaining);
if (ret == -1)
{
if (errno == EINTR)
goto again;
g_set_error (error,
G_IO_ERROR,
g_io_error_from_errno (errno),
_("Error writing nonce file at '%s': %s"),
server->nonce_file,
strerror (errno));
goto out;
}
bytes_written += ret;
bytes_remaining -= ret;
}
if (!g_close (fd, error))
goto out;
file_escaped = g_uri_escape_string (server->nonce_file, "/\\", FALSE);
server->client_address = g_strdup_printf ("nonce-tcp:host=%s,port=%d,noncefile=%s",
host,
port_num,
file_escaped);
g_free (file_escaped);
}
else
{
server->client_address = g_strdup_printf ("tcp:host=%s,port=%d", host, port_num);
}
server->is_using_listener = TRUE;
ret = TRUE;
out:
g_list_free_full (resolved_addresses, g_object_unref);
g_object_unref (resolver);
return ret;
}
/**
* g_socket_listener_add_any_inet_port:
* @listener: a #GSocketListener
* @source_object: (allow-none): Optional #GObject identifying this source
* @error: a #GError location to store the error occurring, or %NULL to
* ignore.
*
* Listens for TCP connections on any available port number for both
* IPv6 and IPv4 (if each is available).
*
* This is useful if you need to have a socket for incoming connections
* but don't care about the specific port number.
*
* @source_object will be passed out in the various calls
* to accept to identify this particular source, which is
* useful if you're listening on multiple addresses and do
* different things depending on what address is connected to.
*
* Returns: the port number, or 0 in case of failure.
*
* Since: 2.24
**/
guint16
g_socket_listener_add_any_inet_port (GSocketListener *listener,
GObject *source_object,
GError **error)
{
GSList *sockets_to_close = NULL;
guint16 candidate_port = 0;
GSocket *socket6 = NULL;
GSocket *socket4 = NULL;
gint attempts = 37;
/*
* multi-step process:
* - first, create an IPv6 socket.
* - if that fails, create an IPv4 socket and bind it to port 0 and
* that's it. no retries if that fails (why would it?).
* - if our IPv6 socket also speaks IPv4 then we are done.
* - if not, then we need to create a IPv4 socket with the same port
* number. this might fail, of course. so we try this a bunch of
* times -- leaving the old IPv6 sockets open so that we get a
* different port number to try each time.
* - if all that fails then just give up.
*/
while (attempts--)
{
GInetAddress *inet_address;
GSocketAddress *address;
gboolean result;
g_assert (socket6 == NULL);
socket6 = g_socket_new (G_SOCKET_FAMILY_IPV6,
G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_DEFAULT,
NULL);
if (socket6 != NULL)
{
inet_address = g_inet_address_new_any (G_SOCKET_FAMILY_IPV6);
address = g_inet_socket_address_new (inet_address, 0);
g_object_unref (inet_address);
result = g_socket_bind (socket6, address, TRUE, error);
g_object_unref (address);
if (!result ||
!(address = g_socket_get_local_address (socket6, error)))
{
g_object_unref (socket6);
socket6 = NULL;
break;
}
g_assert (G_IS_INET_SOCKET_ADDRESS (address));
candidate_port =
g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (address));
g_assert (candidate_port != 0);
g_object_unref (address);
if (g_socket_speaks_ipv4 (socket6))
break;
}
g_assert (socket4 == NULL);
socket4 = g_socket_new (G_SOCKET_FAMILY_IPV4,
G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_DEFAULT,
socket6 ? NULL : error);
if (socket4 == NULL)
/* IPv4 not supported.
* if IPv6 is supported then candidate_port will be non-zero
* (and the error parameter above will have been NULL)
* if IPv6 is unsupported then candidate_port will be zero
* (and error will have been set by the above call)
*/
break;
inet_address = g_inet_address_new_any (G_SOCKET_FAMILY_IPV4);
address = g_inet_socket_address_new (inet_address, candidate_port);
g_object_unref (inet_address);
/* a note on the 'error' clause below:
*
* if candidate_port is 0 then we report the error right away
* since it is strange that this binding would fail at all.
* otherwise, we ignore the error message (ie: NULL).
*
* the exception to this rule is the last time through the loop
* (ie: attempts == 0) in which case we want to set the error
* because failure here means that the entire call will fail and
* we need something to show to the user.
*
* an english summary of the situation: "if we gave a candidate
* port number AND we have more attempts to try, then ignore the
* error for now".
*/
result = g_socket_bind (socket4, address, TRUE,
(candidate_port && attempts) ? NULL : error);
g_object_unref (address);
if (candidate_port)
{
g_assert (socket6 != NULL);
if (result)
/* got our candidate port successfully */
break;
else
/* we failed to bind to the specified port. try again. */
{
g_object_unref (socket4);
socket4 = NULL;
/* keep this open so we get a different port number */
sockets_to_close = g_slist_prepend (sockets_to_close,
socket6);
candidate_port = 0;
socket6 = NULL;
}
}
else
/* we didn't tell it a port. this means two things.
* - if we failed, then something really bad happened.
* - if we succeeded, then we need to find out the port number.
*/
{
g_assert (socket6 == NULL);
if (!result ||
!(address = g_socket_get_local_address (socket4, error)))
{
g_object_unref (socket4);
socket4 = NULL;
break;
}
g_assert (G_IS_INET_SOCKET_ADDRESS (address));
candidate_port =
g_inet_socket_address_get_port (G_INET_SOCKET_ADDRESS (address));
g_assert (candidate_port != 0);
g_object_unref (address);
break;
}
}
/* should only be non-zero if we have a socket */
g_assert ((candidate_port != 0) == (socket4 || socket6));
while (sockets_to_close)
{
g_object_unref (sockets_to_close->data);
sockets_to_close = g_slist_delete_link (sockets_to_close,
sockets_to_close);
}
/* now we actually listen() the sockets and add them to the listener */
if (socket6 != NULL)
{
g_socket_set_listen_backlog (socket6, listener->priv->listen_backlog);
if (!g_socket_listen (socket6, error))
{
g_object_unref (socket6);
if (socket4)
g_object_unref (socket4);
return 0;
}
if (source_object)
g_object_set_qdata_full (G_OBJECT (socket6), source_quark,
g_object_ref (source_object),
g_object_unref);
g_ptr_array_add (listener->priv->sockets, socket6);
}
if (socket4 != NULL)
{
g_socket_set_listen_backlog (socket4, listener->priv->listen_backlog);
if (!g_socket_listen (socket4, error))
{
g_object_unref (socket4);
if (socket6)
g_object_unref (socket6);
return 0;
}
if (source_object)
g_object_set_qdata_full (G_OBJECT (socket4), source_quark,
g_object_ref (source_object),
g_object_unref);
g_ptr_array_add (listener->priv->sockets, socket4);
}
if ((socket4 != NULL || socket6 != NULL) &&
G_SOCKET_LISTENER_GET_CLASS (listener)->changed)
G_SOCKET_LISTENER_GET_CLASS (listener)->changed (listener);
return candidate_port;
}
