/**
* g_pollable_source_new_full:
* @pollable_stream: (type GObject): the stream associated with the
* new source
* @child_source: (allow-none): optional child source to attach
* @cancellable: (allow-none): optional #GCancellable to attach
*
* Utility method for #GPollableInputStream and #GPollableOutputStream
* implementations. Creates a new #GSource, as with
* g_pollable_source_new(), but also attaching @child_source (with a
* dummy callback), and @cancellable, if they are non-%NULL.
*
* Return value: (transfer full): the new #GSource.
*
* Since: 2.34
*/
GSource *
g_pollable_source_new_full (gpointer pollable_stream,
GSource *child_source,
GCancellable *cancellable)
{
GSource *source;
g_return_val_if_fail (G_IS_POLLABLE_INPUT_STREAM (pollable_stream) ||
G_IS_POLLABLE_OUTPUT_STREAM (pollable_stream), NULL);
source = g_pollable_source_new (pollable_stream);
if (child_source)
{
g_source_set_dummy_callback (child_source);
g_source_add_child_source (source, child_source);
}
if (cancellable)
{
GSource *cancellable_source = g_cancellable_source_new (cancellable);
g_source_set_dummy_callback (cancellable_source);
g_source_add_child_source (source, cancellable_source);
g_source_unref (cancellable_source);
}
return source;
}
static void
initialize_io (CockpitStream *self)
{
GInputStream *is;
GOutputStream *os;
g_return_if_fail (self->priv->in_source == NULL);
is = g_io_stream_get_input_stream (self->priv->io);
os = g_io_stream_get_output_stream (self->priv->io);
if (!G_IS_POLLABLE_INPUT_STREAM (is) ||
!g_pollable_input_stream_can_poll (G_POLLABLE_INPUT_STREAM (is)) ||
!G_IS_POLLABLE_OUTPUT_STREAM (os) ||
!g_pollable_output_stream_can_poll (G_POLLABLE_OUTPUT_STREAM (os)))
{
g_warning ("%s: stream is not pollable", self->priv->name);
close_immediately (self, "internal-error");
return;
}
if (self->priv->connecting)
{
g_object_unref (self->priv->connecting);
self->priv->connecting = NULL;
}
self->priv->in_source = g_pollable_input_stream_create_source (G_POLLABLE_INPUT_STREAM (is), NULL);
g_source_set_name (self->priv->in_source, "stream-input");
g_source_set_callback (self->priv->in_source, (GSourceFunc)dispatch_input, self, NULL);
g_source_attach (self->priv->in_source, self->priv->context);
start_output (self);
}
/**
* g_pollable_output_stream_can_poll:
* @stream: a #GPollableOutputStream.
*
* Checks if @stream is actually pollable. Some classes may implement
* #GPollableOutputStream but have only certain instances of that
* class be pollable. If this method returns %FALSE, then the behavior
* of other #GPollableOutputStream methods is undefined.
*
* For any given stream, the value returned by this method is constant;
* a stream cannot switch from pollable to non-pollable or vice versa.
*
* Returns: %TRUE if @stream is pollable, %FALSE if not.
*
* Since: 2.28
*/
gboolean
g_pollable_output_stream_can_poll (GPollableOutputStream *stream)
{
g_return_val_if_fail (G_IS_POLLABLE_OUTPUT_STREAM (stream), FALSE);
return G_POLLABLE_OUTPUT_STREAM_GET_INTERFACE (stream)->can_poll (stream);
}
/**
* g_pollable_output_stream_create_source:
* @stream: a #GPollableOutputStream.
* @cancellable: (allow-none): a #GCancellable, or %NULL
*
* Creates a #GSource that triggers when @stream can be written, or
* @cancellable is triggered or an error occurs. The callback on the
* source is of the #GPollableSourceFunc type.
*
* As with g_pollable_output_stream_is_writable(), it is possible that
* the stream may not actually be writable even after the source
* triggers, so you should use g_pollable_output_stream_write_nonblocking()
* rather than g_output_stream_write() from the callback.
*
* Returns: (transfer full): a new #GSource
*
* Since: 2.28
*/
GSource *
g_pollable_output_stream_create_source (GPollableOutputStream *stream,
GCancellable *cancellable)
{
g_return_val_if_fail (G_IS_POLLABLE_OUTPUT_STREAM (stream), NULL);
return G_POLLABLE_OUTPUT_STREAM_GET_INTERFACE (stream)->
create_source (stream, cancellable);
}
static void
tls_source_sync (GTlsConnectionBaseSource *tls_source)
{
GTlsConnectionBase *tls = tls_source->tls;
gboolean io_waiting, op_waiting;
/* Was the source destroyed earlier in this main context iteration? */
if (g_source_is_destroyed ((GSource *) tls_source))
return;
g_mutex_lock (&tls->op_mutex);
if (((tls_source->condition & G_IO_IN) && tls->reading) ||
((tls_source->condition & G_IO_OUT) && tls->writing) ||
(tls->handshaking && !tls->need_finish_handshake))
op_waiting = TRUE;
else
op_waiting = FALSE;
if (!op_waiting && !tls->need_handshake &&
!tls->need_finish_handshake)
io_waiting = TRUE;
else
io_waiting = FALSE;
g_mutex_unlock (&tls->op_mutex);
if (op_waiting == tls_source->op_waiting &&
io_waiting == tls_source->io_waiting)
return;
tls_source->op_waiting = op_waiting;
tls_source->io_waiting = io_waiting;
if (tls_source->child_source)
{
g_source_remove_child_source ((GSource *)tls_source,
tls_source->child_source);
g_source_unref (tls_source->child_source);
}
if (op_waiting)
tls_source->child_source = g_cancellable_source_new (tls->waiting_for_op);
else if (io_waiting && G_IS_POLLABLE_INPUT_STREAM (tls_source->stream))
tls_source->child_source = g_pollable_input_stream_create_source (tls->base_istream, NULL);
else if (io_waiting && G_IS_POLLABLE_OUTPUT_STREAM (tls_source->stream))
tls_source->child_source = g_pollable_output_stream_create_source (tls->base_ostream, NULL);
else
tls_source->child_source = g_timeout_source_new (0);
g_source_set_dummy_callback (tls_source->child_source);
g_source_add_child_source ((GSource *)tls_source, tls_source->child_source);
}
static void
initialize_io (CockpitStream *self)
{
GInputStream *is;
GOutputStream *os;
g_return_if_fail (self->priv->in_source == NULL);
is = g_io_stream_get_input_stream (self->priv->io);
os = g_io_stream_get_output_stream (self->priv->io);
if (!G_IS_POLLABLE_INPUT_STREAM (is) ||
!g_pollable_input_stream_can_poll (G_POLLABLE_INPUT_STREAM (is)) ||
!G_IS_POLLABLE_OUTPUT_STREAM (os) ||
!g_pollable_output_stream_can_poll (G_POLLABLE_OUTPUT_STREAM (os)))
{
g_warning ("%s: stream is not pollable", self->priv->name);
close_immediately (self, "internal-error");
return;
}
if (self->priv->connecting)
{
cockpit_connectable_unref (self->priv->connecting);
self->priv->connecting = NULL;
}
self->priv->in_source = g_pollable_input_stream_create_source (G_POLLABLE_INPUT_STREAM (is), NULL);
g_source_set_name (self->priv->in_source, "stream-input");
g_source_set_callback (self->priv->in_source, (GSourceFunc)dispatch_input, self, NULL);
g_source_attach (self->priv->in_source, self->priv->context);
if (G_IS_TLS_CONNECTION (self->priv->io))
{
self->priv->sig_accept_cert = g_signal_connect (G_TLS_CONNECTION (self->priv->io),
"accept-certificate",
G_CALLBACK (on_rejected_certificate),
self);
}
else
{
self->priv->sig_accept_cert = 0;
}
start_output (self);
g_signal_emit (self, cockpit_stream_sig_open, 0);
}
/**
* g_pollable_source_new:
* @pollable_stream: the stream associated with the new source
*
* Utility method for #GPollableInputStream and #GPollableOutputStream
* implementations. Creates a new #GSource that expects a callback of
* type #GPollableSourceFunc. The new source does not actually do
* anything on its own; use g_source_add_child_source() to add other
* sources to it to cause it to trigger.
*
* Return value: (transfer full): the new #GSource.
*
* Since: 2.28
*/
GSource *
g_pollable_source_new (GObject *pollable_stream)
{
GSource *source;
GPollableSource *pollable_source;
g_return_val_if_fail (G_IS_POLLABLE_INPUT_STREAM (pollable_stream) ||
G_IS_POLLABLE_OUTPUT_STREAM (pollable_stream), NULL);
source = g_source_new (&pollable_source_funcs, sizeof (GPollableSource));
g_source_set_name (source, "GPollableSource");
pollable_source = (GPollableSource *)source;
pollable_source->stream = g_object_ref (pollable_stream);
return source;
}
/**
* cockpit_web_response_new:
* @io: the stream to send on
* @path: the path resource or NULL
* @query: the query string or NULL
* @in_headers: input headers or NULL
*
* Create a new web response.
*
* The returned reference belongs to the caller. Additionally
* once cockpit_web_response_complete() is called, an additional
* reference is held until the response is sent and flushed.
*
* Returns: (transfer full): the new response, unref when done with it
*/
CockpitWebResponse *
cockpit_web_response_new (GIOStream *io,
const gchar *path,
const gchar *query,
GHashTable *in_headers)
{
CockpitWebResponse *self;
GOutputStream *out;
const gchar *connection;
/* Trying to be a somewhat performant here, avoiding properties */
self = g_object_new (COCKPIT_TYPE_WEB_RESPONSE, NULL);
self->io = g_object_ref (io);
out = g_io_stream_get_output_stream (io);
if (G_IS_POLLABLE_OUTPUT_STREAM (out))
{
self->out = (GPollableOutputStream *)out;
}
else
{
g_critical ("Cannot send web response over non-pollable output stream: %s",
G_OBJECT_TYPE_NAME (out));
}
self->full_path = g_strdup (path);
self->path = self->full_path;
self->query = g_strdup (query);
if (self->path)
self->logname = self->path;
else
self->logname = "response";
self->keep_alive = TRUE;
if (in_headers)
{
connection = g_hash_table_lookup (in_headers, "Connection");
if (connection)
self->keep_alive = g_str_equal (connection, "keep-alive");
}
return self;
}
/**
* g_pollable_output_stream_write_nonblocking:
* @stream: a #GPollableOutputStream
* @buffer: (array length=count) (element-type guint8): a buffer to write
* data from
* @count: the number of bytes you want to write
* @cancellable: (allow-none): a #GCancellable, or %NULL
* @error: #GError for error reporting, or %NULL to ignore.
*
* Attempts to write up to @count bytes from @buffer to @stream, as
* with g_output_stream_write(). If @stream is not currently writable,
* this will immediately return %G_IO_ERROR_WOULD_BLOCK, and you can
* use g_pollable_output_stream_create_source() to create a #GSource
* that will be triggered when @stream is writable.
*
* Note that since this method never blocks, you cannot actually
* use @cancellable to cancel it. However, it will return an error
* if @cancellable has already been cancelled when you call, which
* may happen if you call this method after a source triggers due
* to having been cancelled.
*
* Virtual: write_nonblocking
* Return value: the number of bytes written, or -1 on error (including
* %G_IO_ERROR_WOULD_BLOCK).
*/
gssize
g_pollable_output_stream_write_nonblocking (GPollableOutputStream *stream,
const void *buffer,
gsize count,
GCancellable *cancellable,
GError **error)
{
gssize res;
g_return_val_if_fail (G_IS_POLLABLE_OUTPUT_STREAM (stream), -1);
g_return_val_if_fail (buffer != NULL, 0);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return -1;
if (count == 0)
return 0;
if (((gssize) count) < 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("Too large count value passed to %s"), G_STRFUNC);
return -1;
}
if (cancellable)
g_cancellable_push_current (cancellable);
res = G_POLLABLE_OUTPUT_STREAM_GET_INTERFACE (stream)->
write_nonblocking (stream, buffer, count, error);
if (cancellable)
g_cancellable_pop_current (cancellable);
return res;
}
static void
test_pollable_cancellation (NiceAddress *addr)
{
NiceAgent *agent;
guint stream_id;
GIOStream *io_stream;
GInputStream *input_stream;
GOutputStream *output_stream;
GPollableInputStream *pollable_input_stream;
GPollableOutputStream *pollable_output_stream;
guint8 buf[65536];
GError *error = NULL;
GSource *stream_source;
GCancellable *cancellable;
agent = nice_agent_new_reliable (NULL, NICE_COMPATIBILITY_RFC5245);
nice_agent_add_local_address (agent, addr);
/* Add a stream. */
stream_id = nice_agent_add_stream (agent, 1);
/* Try building an I/O stream around it. */
io_stream = nice_agent_get_io_stream (agent, stream_id, 1);
g_assert (G_IS_IO_STREAM (io_stream));
g_assert (NICE_IS_IO_STREAM (io_stream));
/* Grab the input and output streams. */
input_stream = g_io_stream_get_input_stream (G_IO_STREAM (io_stream));
g_assert (G_IS_POLLABLE_INPUT_STREAM (input_stream));
pollable_input_stream = G_POLLABLE_INPUT_STREAM (input_stream);
output_stream = g_io_stream_get_output_stream (G_IO_STREAM (io_stream));
g_assert (G_IS_POLLABLE_OUTPUT_STREAM (output_stream));
pollable_output_stream = G_POLLABLE_OUTPUT_STREAM (output_stream);
/* Check the non-blocking read() and write() return immediately if called with
* a cancelled cancellable. */
cancellable = g_cancellable_new ();
g_cancellable_cancel (cancellable);
g_assert (
g_pollable_input_stream_read_nonblocking (pollable_input_stream,
buf, sizeof (buf), cancellable, &error) == -1);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CANCELLED);
g_clear_error (&error);
g_assert (
g_pollable_output_stream_write_nonblocking (pollable_output_stream,
buf, sizeof (buf), cancellable, &error) == -1);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CANCELLED);
g_clear_error (&error);
g_object_unref (cancellable);
/* Check the GSources invoke a callback when run with the cancellable
* cancelled. */
cancellable = g_cancellable_new ();
stream_source =
g_pollable_input_stream_create_source (pollable_input_stream,
cancellable);
check_pollable_source_cancellation (stream_source, cancellable);
g_source_unref (stream_source);
g_object_unref (cancellable);
/* And for the output stream. */
cancellable = g_cancellable_new ();
stream_source =
g_pollable_output_stream_create_source (pollable_output_stream,
cancellable);
check_pollable_source_cancellation (stream_source, cancellable);
g_object_unref (io_stream);
g_source_unref (stream_source);
g_object_unref (cancellable);
g_object_unref (agent);
}
static void
test_pollable_properties (NiceAddress *addr)
{
NiceAgent *agent;
guint stream_id;
GIOStream *io_stream;
GInputStream *input_stream;
GOutputStream *output_stream;
GPollableInputStream *pollable_input_stream;
GPollableOutputStream *pollable_output_stream;
guint8 buf[65536];
GError *error = NULL;
GSource *stream_source;
agent = nice_agent_new_reliable (NULL, NICE_COMPATIBILITY_RFC5245);
nice_agent_add_local_address (agent, addr);
/* Add a stream. */
stream_id = nice_agent_add_stream (agent, 1);
/* Try building an I/O stream around it. */
io_stream = nice_agent_get_io_stream (agent, stream_id, 1);
g_assert (G_IS_IO_STREAM (io_stream));
g_assert (NICE_IS_IO_STREAM (io_stream));
/* Check the input stream’s properties. */
input_stream = g_io_stream_get_input_stream (G_IO_STREAM (io_stream));
g_assert (G_IS_POLLABLE_INPUT_STREAM (input_stream));
pollable_input_stream = G_POLLABLE_INPUT_STREAM (input_stream);
g_assert (g_pollable_input_stream_can_poll (pollable_input_stream));
g_assert (!g_pollable_input_stream_is_readable (pollable_input_stream));
g_assert (
g_pollable_input_stream_read_nonblocking (pollable_input_stream,
buf, sizeof (buf), NULL, &error) == -1);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK);
g_clear_error (&error);
stream_source =
g_pollable_input_stream_create_source (pollable_input_stream, NULL);
g_assert (stream_source != NULL);
g_source_unref (stream_source);
/* Check the output stream’s properties. */
output_stream = g_io_stream_get_output_stream (G_IO_STREAM (io_stream));
g_assert (G_IS_POLLABLE_OUTPUT_STREAM (output_stream));
pollable_output_stream = G_POLLABLE_OUTPUT_STREAM (output_stream);
g_assert (g_pollable_output_stream_can_poll (pollable_output_stream));
g_assert (!g_pollable_output_stream_is_writable (pollable_output_stream));
g_assert (
g_pollable_output_stream_write_nonblocking (pollable_output_stream,
buf, sizeof (buf), NULL, &error) == -1);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK);
g_clear_error (&error);
stream_source =
g_pollable_output_stream_create_source (pollable_output_stream, NULL);
g_assert (stream_source != NULL);
g_source_unref (stream_source);
/* Remove the component and check that the I/O streams close. */
nice_agent_remove_stream (agent, stream_id);
g_assert (!g_pollable_input_stream_is_readable (pollable_input_stream));
g_assert (!g_pollable_output_stream_is_writable (pollable_output_stream));
g_assert (
g_pollable_input_stream_read_nonblocking (pollable_input_stream,
buf, sizeof (buf), NULL, &error) == 0);
g_assert_no_error (error);
g_assert (
g_pollable_output_stream_write_nonblocking (pollable_output_stream,
buf, sizeof (buf), NULL, &error) == -1);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_CLOSED);
g_clear_error (&error);
g_object_unref (io_stream);
g_object_unref (agent);
}
static void
g_tls_connection_base_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GTlsConnectionBase *tls = G_TLS_CONNECTION_BASE (object);
GInputStream *istream;
GOutputStream *ostream;
gboolean system_certdb;
GTlsBackend *backend;
switch (prop_id)
{
case PROP_BASE_IO_STREAM:
if (tls->base_io_stream)
{
g_object_unref (tls->base_io_stream);
tls->base_istream = NULL;
tls->base_ostream = NULL;
}
tls->base_io_stream = g_value_dup_object (value);
if (!tls->base_io_stream)
return;
istream = g_io_stream_get_input_stream (tls->base_io_stream);
ostream = g_io_stream_get_output_stream (tls->base_io_stream);
if (G_IS_POLLABLE_INPUT_STREAM (istream) &&
g_pollable_input_stream_can_poll (G_POLLABLE_INPUT_STREAM (istream)))
{
tls->base_istream = G_POLLABLE_INPUT_STREAM (istream);
tls->tls_istream = g_tls_input_stream_base_new (tls);
}
if (G_IS_POLLABLE_OUTPUT_STREAM (ostream) &&
g_pollable_output_stream_can_poll (G_POLLABLE_OUTPUT_STREAM (ostream)))
{
tls->base_ostream = G_POLLABLE_OUTPUT_STREAM (ostream);
tls->tls_ostream = g_tls_output_stream_base_new (tls);
}
break;
case PROP_REQUIRE_CLOSE_NOTIFY:
tls->require_close_notify = g_value_get_boolean (value);
break;
case PROP_REHANDSHAKE_MODE:
tls->rehandshake_mode = g_value_get_enum (value);
break;
case PROP_USE_SYSTEM_CERTDB:
system_certdb = g_value_get_boolean (value);
if (system_certdb != tls->is_system_certdb)
{
g_clear_object (&tls->database);
if (system_certdb)
{
backend = g_tls_backend_get_default ();
tls->database = g_tls_backend_get_default_database (backend);
}
tls->is_system_certdb = system_certdb;
tls->database_is_unset = FALSE;
}
break;
case PROP_DATABASE:
g_clear_object (&tls->database);
tls->database = g_value_dup_object (value);
tls->is_system_certdb = FALSE;
tls->database_is_unset = FALSE;
break;
case PROP_CERTIFICATE:
if (tls->certificate)
g_object_unref (tls->certificate);
tls->certificate = g_value_dup_object (value);
break;
case PROP_INTERACTION:
g_clear_object (&tls->interaction);
tls->interaction = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
