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|
/*
* bytestream-multiple.c - Source for GabbleBytestreamMultiple
* Copyright (C) 2007-2008 Collabora Ltd.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "bytestream-multiple.h"
#include <dbus/dbus-glib.h>
#include <dbus/dbus-glib-lowlevel.h>
#include <loudmouth/loudmouth.h>
#include <telepathy-glib/interfaces.h>
#define DEBUG_FLAG GABBLE_DEBUG_BYTESTREAM
#include "base64.h"
#include "bytestream-factory.h"
#include "bytestream-iface.h"
#include "connection.h"
#include "debug.h"
#include "disco.h"
#include "gabble-signals-marshal.h"
#include "namespaces.h"
#include "util.h"
static void
bytestream_iface_init (gpointer g_iface, gpointer iface_data);
G_DEFINE_TYPE_WITH_CODE (GabbleBytestreamMultiple, gabble_bytestream_multiple,
G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GABBLE_TYPE_BYTESTREAM_IFACE,
bytestream_iface_init));
/* properties */
enum
{
PROP_CONNECTION = 1,
PROP_PEER_HANDLE,
PROP_PEER_HANDLE_TYPE,
PROP_STREAM_ID,
PROP_STREAM_INIT_ID,
PROP_PEER_JID,
PROP_PEER_RESOURCE,
PROP_STATE,
PROP_PROTOCOL,
PROP_FACTORY,
PROP_SELF_JID,
LAST_PROPERTY
};
struct _GabbleBytestreamMultiplePrivate
{
GabbleConnection *conn;
TpHandle peer_handle;
gchar *stream_id;
gchar *stream_init_id;
gchar *peer_resource;
GabbleBytestreamState state;
gchar *peer_jid;
GabbleBytestreamFactory *factory;
gchar *self_full_jid;
/* List of (gchar *) containing the NS of a stream method */
GList *fallback_stream_methods;
GabbleBytestreamIface *active_bytestream;
gboolean read_blocked;
gboolean dispose_has_run;
};
#define GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE(obj) ((obj)->priv)
static void bytestream_activate_next (GabbleBytestreamMultiple *self);
static void
gabble_bytestream_multiple_init (GabbleBytestreamMultiple *self)
{
GabbleBytestreamMultiplePrivate *priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GABBLE_TYPE_BYTESTREAM_MULTIPLE, GabbleBytestreamMultiplePrivate);
self->priv = priv;
}
static void
gabble_bytestream_multiple_dispose (GObject *object)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (object);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
TpHandleRepoIface *contact_repo = tp_base_connection_get_handles (
(TpBaseConnection *) priv->conn, TP_HANDLE_TYPE_CONTACT);
if (priv->dispose_has_run)
return;
priv->dispose_has_run = TRUE;
tp_handle_unref (contact_repo, priv->peer_handle);
if (priv->state != GABBLE_BYTESTREAM_STATE_CLOSED)
{
gabble_bytestream_iface_close (GABBLE_BYTESTREAM_IFACE (self), NULL);
}
G_OBJECT_CLASS (gabble_bytestream_multiple_parent_class)->dispose (object);
}
static void
gabble_bytestream_multiple_finalize (GObject *object)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (object);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
GList *l;
for (l = priv->fallback_stream_methods; l != NULL; l = g_list_next (l))
g_free (l->data);
g_list_free (priv->fallback_stream_methods);
g_free (priv->stream_id);
g_free (priv->stream_init_id);
g_free (priv->peer_resource);
g_free (priv->peer_jid);
g_free (priv->self_full_jid);
G_OBJECT_CLASS (gabble_bytestream_multiple_parent_class)->finalize (object);
}
static void
gabble_bytestream_multiple_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (object);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
switch (property_id)
{
case PROP_CONNECTION:
g_value_set_object (value, priv->conn);
break;
case PROP_PEER_HANDLE:
g_value_set_uint (value, priv->peer_handle);
break;
case PROP_PEER_HANDLE_TYPE:
g_value_set_uint (value, TP_HANDLE_TYPE_CONTACT);
break;
case PROP_STREAM_ID:
g_value_set_string (value, priv->stream_id);
break;
case PROP_STREAM_INIT_ID:
g_value_set_string (value, priv->stream_init_id);
break;
case PROP_PEER_RESOURCE:
g_value_set_string (value, priv->peer_resource);
break;
case PROP_PEER_JID:
g_value_set_string (value, priv->peer_jid);
break;
case PROP_STATE:
g_value_set_uint (value, priv->state);
break;
case PROP_PROTOCOL:
g_value_set_string (value, NS_BYTESTREAMS);
break;
case PROP_FACTORY:
g_value_set_object (value, priv->factory);
break;
case PROP_SELF_JID:
g_value_set_string (value, priv->self_full_jid);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gabble_bytestream_multiple_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (object);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
switch (property_id)
{
case PROP_CONNECTION:
priv->conn = g_value_get_object (value);
break;
case PROP_PEER_HANDLE:
priv->peer_handle = g_value_get_uint (value);
break;
case PROP_STREAM_ID:
g_free (priv->stream_id);
priv->stream_id = g_value_dup_string (value);
break;
case PROP_STREAM_INIT_ID:
g_free (priv->stream_init_id);
priv->stream_init_id = g_value_dup_string (value);
break;
case PROP_PEER_RESOURCE:
g_free (priv->peer_resource);
priv->peer_resource = g_value_dup_string (value);
break;
case PROP_STATE:
if (priv->state != g_value_get_uint (value))
{
priv->state = g_value_get_uint (value);
g_signal_emit_by_name (object, "state-changed", priv->state);
}
break;
case PROP_FACTORY:
priv->factory = g_value_get_object (value);
break;
case PROP_SELF_JID:
g_free (priv->self_full_jid);
priv->self_full_jid = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static GObject *
gabble_bytestream_multiple_constructor (GType type,
guint n_props,
GObjectConstructParam *props)
{
GObject *obj;
GabbleBytestreamMultiplePrivate *priv;
TpHandleRepoIface *contact_repo;
const gchar *jid;
obj = G_OBJECT_CLASS (gabble_bytestream_multiple_parent_class)->
constructor (type, n_props, props);
priv = GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (
GABBLE_BYTESTREAM_MULTIPLE (obj));
g_assert (priv->conn != NULL);
g_assert (priv->peer_handle != 0);
g_assert (priv->stream_id != NULL);
contact_repo = tp_base_connection_get_handles (
(TpBaseConnection *) priv->conn, TP_HANDLE_TYPE_CONTACT);
tp_handle_ref (contact_repo, priv->peer_handle);
jid = tp_handle_inspect (contact_repo, priv->peer_handle);
if (priv->peer_resource != NULL)
priv->peer_jid = g_strdup_printf ("%s/%s", jid, priv->peer_resource);
else
priv->peer_jid = g_strdup (jid);
g_assert (priv->self_full_jid != NULL);
return obj;
}
static void
gabble_bytestream_multiple_class_init (
GabbleBytestreamMultipleClass *gabble_bytestream_multiple_class)
{
GObjectClass *object_class =
G_OBJECT_CLASS (gabble_bytestream_multiple_class);
GParamSpec *param_spec;
g_type_class_add_private (gabble_bytestream_multiple_class,
sizeof (GabbleBytestreamMultiplePrivate));
object_class->dispose = gabble_bytestream_multiple_dispose;
object_class->finalize = gabble_bytestream_multiple_finalize;
object_class->get_property = gabble_bytestream_multiple_get_property;
object_class->set_property = gabble_bytestream_multiple_set_property;
object_class->constructor = gabble_bytestream_multiple_constructor;
g_object_class_override_property (object_class, PROP_CONNECTION,
"connection");
g_object_class_override_property (object_class, PROP_PEER_HANDLE,
"peer-handle");
g_object_class_override_property (object_class, PROP_PEER_HANDLE_TYPE,
"peer-handle-type");
g_object_class_override_property (object_class, PROP_STREAM_ID,
"stream-id");
g_object_class_override_property (object_class, PROP_PEER_JID,
"peer-jid");
g_object_class_override_property (object_class, PROP_STATE,
"state");
g_object_class_override_property (object_class, PROP_PROTOCOL,
"protocol");
param_spec = g_param_spec_string (
"peer-resource",
"Peer resource",
"the resource used by the remote peer during the SI, if any",
NULL,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_PEER_RESOURCE,
param_spec);
param_spec = g_param_spec_string (
"stream-init-id",
"stream init ID",
"the iq ID of the SI request, if any",
NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_STREAM_INIT_ID,
param_spec);
param_spec = g_param_spec_object (
"factory",
"Factory",
"The GabbleBytestreamFactory that created the stream",
GABBLE_TYPE_BYTESTREAM_FACTORY,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_FACTORY,
param_spec);
param_spec = g_param_spec_string (
"self-jid",
"Our self jid",
"Either a contact full jid or a muc jid",
NULL,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_SELF_JID,
param_spec);
}
/*
* gabble_bytestream_multiple_send
*
* Implements gabble_bytestream_iface_send on GabbleBytestreamIface
*/
static gboolean
gabble_bytestream_multiple_send (GabbleBytestreamIface *iface,
guint len,
const gchar *str)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (iface);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
if (priv->state != GABBLE_BYTESTREAM_STATE_OPEN)
{
DEBUG ("can't send data through a not open bytestream (state: %d)",
priv->state);
return FALSE;
}
g_assert (priv->active_bytestream != NULL);
return gabble_bytestream_iface_send (priv->active_bytestream, len, str);
}
/*
* gabble_bytestream_multiple_accept
*
* Implements gabble_bytestream_iface_accept on GabbleBytestreamIface
*/
static void
gabble_bytestream_multiple_accept (GabbleBytestreamIface *iface,
GabbleBytestreamAugmentSiAcceptReply func,
gpointer user_data)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (iface);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
LmMessage *msg;
LmMessageNode *si;
GList *all_methods;
gchar *current_method;
/* We cannot just call the accept method of the active bytestream because
* the result stanza is different if we are using si-multiple */
if (priv->state != GABBLE_BYTESTREAM_STATE_LOCAL_PENDING)
{
/* The stream was previoulsy or automatically accepted */
return;
}
g_return_if_fail (priv->active_bytestream != NULL);
all_methods = g_list_copy (priv->fallback_stream_methods);
g_object_get (priv->active_bytestream, "protocol", ¤t_method, NULL);
all_methods = g_list_prepend (all_methods, current_method);
msg = gabble_bytestream_factory_make_multi_accept_iq (priv->peer_jid,
priv->stream_init_id, all_methods);
g_free (current_method);
g_list_free (all_methods);
si = lm_message_node_get_child_with_namespace (msg->node, "si", NS_SI);
g_assert (si != NULL);
if (func != NULL)
{
/* let the caller add his profile specific data */
func (si, user_data);
}
if (_gabble_connection_send (priv->conn, msg, NULL))
{
DEBUG ("stream %s with %s is now accepted", priv->stream_id,
priv->peer_jid);
g_object_set (priv->active_bytestream, "state",
GABBLE_BYTESTREAM_STATE_ACCEPTED, NULL);
}
lm_message_unref (msg);
}
/*
* gabble_bytestream_multiple_close
*
* Implements gabble_bytestream_iface_close on GabbleBytestreamIface
*/
static void
gabble_bytestream_multiple_close (GabbleBytestreamIface *iface,
GError *error)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (iface);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
if (priv->state == GABBLE_BYTESTREAM_STATE_CLOSED)
/* bytestream already closed, do nothing */
return;
if (priv->active_bytestream != NULL)
gabble_bytestream_iface_close (priv->active_bytestream, error);
else
/* It can happen if the bytestream is still empty, i.e. not stream
* methods have been added yet */
g_object_set (self, "state", GABBLE_BYTESTREAM_STATE_CLOSED, NULL);
}
/*
* gabble_bytestream_multiple_initiate
*
* Implements gabble_bytestream_iface_initiate on GabbleBytestreamIface
*/
static gboolean
gabble_bytestream_multiple_initiate (GabbleBytestreamIface *iface)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (iface);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
if (priv->state != GABBLE_BYTESTREAM_STATE_INITIATING)
{
DEBUG ("bytestream is not is the initiating state (state %d)",
priv->state);
return FALSE;
}
if (priv->active_bytestream == NULL)
{
DEBUG ("no bytestreams to initiate");
return FALSE;
}
return gabble_bytestream_iface_initiate (priv->active_bytestream);
}
static void
bytestream_data_received_cb (GabbleBytestreamIface *bytestream,
TpHandle sender,
GString *str,
gpointer user_data)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (user_data);
/* Just forward the data */
g_signal_emit_by_name (G_OBJECT (self), "data-received", sender, str);
}
static void
bytestream_state_changed_cb (GabbleBytestreamIface *bytestream,
GabbleBytestreamState state,
gpointer user_data)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (user_data);
/* When there is a connection error the state of the sub-bytestream becomes
* CLOSED. There is no risk to receive a notification for this kind of
* change because the signal handler is previously disconnected in
* bytestream_connection_error_cb */
g_object_set (self, "state", state, NULL);
}
static void
bytestream_write_blocked_cb (GabbleBytestreamIface *bytestream,
gboolean blocked,
gpointer self)
{
/* Forward signal */
g_signal_emit_by_name (G_OBJECT (self), "write-blocked", blocked);
}
static void
bytestream_connection_error_cb (GabbleBytestreamIface *failed,
gpointer user_data)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (user_data);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
g_assert (failed == priv->active_bytestream);
/* the error signal is only emitted when intiating the bytestream */
g_assert (priv->state == GABBLE_BYTESTREAM_STATE_INITIATING ||
priv->state == GABBLE_BYTESTREAM_STATE_ACCEPTED);
g_signal_handlers_disconnect_by_func (failed,
bytestream_connection_error_cb, self);
g_signal_handlers_disconnect_by_func (failed,
bytestream_data_received_cb, self);
g_signal_handlers_disconnect_by_func (failed,
bytestream_state_changed_cb, self);
g_signal_handlers_disconnect_by_func (failed,
bytestream_write_blocked_cb, self);
/* We don't have to unref it because the reference is kept by the
* factory */
priv->active_bytestream = NULL;
if (priv->fallback_stream_methods == NULL)
return;
DEBUG ("Trying alternative streaming method");
bytestream_activate_next (self);
if (priv->state == GABBLE_BYTESTREAM_STATE_INITIATING)
/* The previous bytestream failed when initiating it, so now we have to
* initiate the new one */
gabble_bytestream_iface_initiate (priv->active_bytestream);
}
static void
bytestream_activate_next (GabbleBytestreamMultiple *self)
{
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
gchar *stream_method;
g_return_if_fail (priv->active_bytestream == NULL);
/* The caller has to be sure that there is a fallback method */
g_return_if_fail (priv->fallback_stream_methods != NULL);
/* Try the first stream method in the fallback list */
stream_method = priv->fallback_stream_methods->data;
priv->fallback_stream_methods = g_list_delete_link (
priv->fallback_stream_methods, priv->fallback_stream_methods);
priv->active_bytestream = gabble_bytestream_factory_create_from_method (
priv->factory, stream_method, priv->peer_handle, priv->stream_id,
priv->stream_init_id, priv->peer_resource, priv->self_full_jid,
priv->state);
/* Methods have already been checked so this shouldn't fail */
g_assert (priv->active_bytestream != NULL);
g_free (stream_method);
/* block the new bytestream if needed */
gabble_bytestream_iface_block_reading (priv->active_bytestream,
priv->read_blocked);
g_signal_connect (priv->active_bytestream, "connection-error",
G_CALLBACK (bytestream_connection_error_cb), self);
g_signal_connect (priv->active_bytestream, "data-received",
G_CALLBACK (bytestream_data_received_cb), self);
g_signal_connect (priv->active_bytestream, "state-changed",
G_CALLBACK (bytestream_state_changed_cb), self);
g_signal_connect (priv->active_bytestream, "write-blocked",
G_CALLBACK (bytestream_write_blocked_cb), self);
}
/*
* gabble_bytestream_multiple_add_bytestream
*
* Add an alternative stream method.
*/
void
gabble_bytestream_multiple_add_stream_method (GabbleBytestreamMultiple *self,
const gchar *method)
{
GabbleBytestreamMultiplePrivate *priv;
g_return_if_fail (GABBLE_IS_BYTESTREAM_MULTIPLE (self));
g_return_if_fail (method != NULL);
priv = GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
DEBUG ("Add bytestream method %s", method);
priv->fallback_stream_methods = g_list_append (
priv->fallback_stream_methods, g_strdup (method));
if (priv->active_bytestream == NULL)
bytestream_activate_next (self);
}
gboolean
gabble_bytestream_multiple_has_stream_method (GabbleBytestreamMultiple *self)
{
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
if (priv->active_bytestream != NULL)
return TRUE;
return (g_list_length (priv->fallback_stream_methods) != 0);
}
static void
gabble_bytestream_multiple_block_reading (GabbleBytestreamIface *iface,
gboolean block)
{
GabbleBytestreamMultiple *self = GABBLE_BYTESTREAM_MULTIPLE (iface);
GabbleBytestreamMultiplePrivate *priv =
GABBLE_BYTESTREAM_MULTIPLE_GET_PRIVATE (self);
if (priv->read_blocked == block)
return;
priv->read_blocked = block;
g_assert (priv->active_bytestream != NULL);
gabble_bytestream_iface_block_reading (priv->active_bytestream, block);
}
static void
bytestream_iface_init (gpointer g_iface,
gpointer iface_data)
{
GabbleBytestreamIfaceClass *klass = (GabbleBytestreamIfaceClass *) g_iface;
klass->initiate = gabble_bytestream_multiple_initiate;
klass->send = gabble_bytestream_multiple_send;
klass->close = gabble_bytestream_multiple_close;
klass->accept = gabble_bytestream_multiple_accept;
klass->block_reading = gabble_bytestream_multiple_block_reading;
}
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