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glib/gio/gnetworkmonitorbase.c
Matthias Clasen 2d6d127c96 Whitespace fixes 
And add some missing since tags.
2011-12-10 21:46:39 -05:00

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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright 2011 Red Hat, Inc.
*
* 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 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gnetworkmonitorbase.h"
#include "ginetaddress.h"
#include "ginetaddressmask.h"
#include "ginetsocketaddress.h"
#include "ginitable.h"
#include "gioerror.h"
#include "giomodule-priv.h"
#include "gnetworkmonitor.h"
#include "gsocketaddressenumerator.h"
#include "gsocketconnectable.h"
#include "glibintl.h"
static void g_network_monitor_base_iface_init (GNetworkMonitorInterface *iface);
static void g_network_monitor_base_initable_iface_init (GInitableIface *iface);
G_DEFINE_TYPE_WITH_CODE (GNetworkMonitorBase, g_network_monitor_base, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
g_network_monitor_base_initable_iface_init)
G_IMPLEMENT_INTERFACE (G_TYPE_NETWORK_MONITOR,
g_network_monitor_base_iface_init)
_g_io_modules_ensure_extension_points_registered ();
g_io_extension_point_implement (G_NETWORK_MONITOR_EXTENSION_POINT_NAME,
g_define_type_id,
"base",
0))
enum
{
PROP_0,
PROP_NETWORK_AVAILABLE
};
struct _GNetworkMonitorBasePrivate
{
GPtrArray *networks;
gboolean have_ipv4_default_route;
gboolean have_ipv6_default_route;
gboolean is_available;
GMainContext *context;
GSource *network_changed_source;
gboolean initializing;
};
static guint network_changed_signal = 0;
static void queue_network_changed (GNetworkMonitorBase *monitor);
static void
g_network_monitor_base_init (GNetworkMonitorBase *monitor)
{
monitor->priv = G_TYPE_INSTANCE_GET_PRIVATE (monitor,
G_TYPE_NETWORK_MONITOR_BASE,
GNetworkMonitorBasePrivate);
monitor->priv->networks = g_ptr_array_new_with_free_func (g_object_unref);
monitor->priv->context = g_main_context_get_thread_default ();
if (monitor->priv->context)
g_main_context_ref (monitor->priv->context);
monitor->priv->initializing = TRUE;
queue_network_changed (monitor);
}
static void
g_network_monitor_base_constructed (GObject *object)
{
GNetworkMonitorBase *monitor = G_NETWORK_MONITOR_BASE (object);
if (G_OBJECT_TYPE (monitor) == G_TYPE_NETWORK_MONITOR_BASE)
{
GInetAddressMask *mask;
/* We're the dumb base class, not a smarter subclass. So just
* assume that the network is available.
*/
mask = g_inet_address_mask_new_from_string ("0.0.0.0/0", NULL);
g_network_monitor_base_add_network (monitor, mask);
g_object_unref (mask);
mask = g_inet_address_mask_new_from_string ("::/0", NULL);
g_network_monitor_base_add_network (monitor, mask);
g_object_unref (mask);
}
}
static void
g_network_monitor_base_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GNetworkMonitorBase *monitor = G_NETWORK_MONITOR_BASE (object);
switch (prop_id)
{
case PROP_NETWORK_AVAILABLE:
g_value_set_boolean (value, monitor->priv->is_available);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
g_network_monitor_base_finalize (GObject *object)
{
GNetworkMonitorBase *monitor = G_NETWORK_MONITOR_BASE (object);
g_ptr_array_free (monitor->priv->networks, TRUE);
if (monitor->priv->network_changed_source)
{
g_source_destroy (monitor->priv->network_changed_source);
g_source_unref (monitor->priv->network_changed_source);
}
if (monitor->priv->context)
g_main_context_unref (monitor->priv->context);
G_OBJECT_CLASS (g_network_monitor_base_parent_class)->finalize (object);
}
static void
g_network_monitor_base_class_init (GNetworkMonitorBaseClass *monitor_class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (monitor_class);
g_type_class_add_private (monitor_class, sizeof (GNetworkMonitorBasePrivate));
gobject_class->constructed = g_network_monitor_base_constructed;
gobject_class->get_property = g_network_monitor_base_get_property;
gobject_class->finalize = g_network_monitor_base_finalize;
g_object_class_override_property (gobject_class, PROP_NETWORK_AVAILABLE, "network-available");
}
static gboolean
g_network_monitor_base_can_reach (GNetworkMonitor *monitor,
GSocketConnectable *connectable,
GCancellable *cancellable,
GError **error)
{
GNetworkMonitorBasePrivate *priv = G_NETWORK_MONITOR_BASE (monitor)->priv;
GSocketAddressEnumerator *enumerator;
GSocketAddress *addr;
if (priv->have_ipv4_default_route &&
priv->have_ipv6_default_route)
return TRUE;
if (priv->networks->len == 0)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NETWORK_UNREACHABLE,
_("Network unreachable"));
return FALSE;
}
enumerator = g_socket_connectable_proxy_enumerate (connectable);
addr = g_socket_address_enumerator_next (enumerator, cancellable, error);
if (!addr)
{
/* Either the user cancelled, or DNS resolution failed */
g_object_unref (enumerator);
return FALSE;
}
while (addr)
{
if (G_IS_INET_SOCKET_ADDRESS (addr))
{
GInetAddress *iaddr;
int i;
iaddr = g_inet_socket_address_get_address (G_INET_SOCKET_ADDRESS (addr));
for (i = 0; i < priv->networks->len; i++)
{
if (g_inet_address_mask_matches (priv->networks->pdata[i], iaddr))
{
g_object_unref (addr);
g_object_unref (enumerator);
return TRUE;
}
}
}
g_object_unref (addr);
addr = g_socket_address_enumerator_next (enumerator, cancellable, error);
}
g_object_unref (enumerator);
if (error && !*error)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_HOST_UNREACHABLE,
_("Host unreachable"));
}
return FALSE;
}
static void
g_network_monitor_base_iface_init (GNetworkMonitorInterface *monitor_iface)
{
monitor_iface->can_reach = g_network_monitor_base_can_reach;
network_changed_signal = g_signal_lookup ("network-changed", G_TYPE_NETWORK_MONITOR);
}
static gboolean
g_network_monitor_base_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
return TRUE;
}
static void
g_network_monitor_base_initable_iface_init (GInitableIface *iface)
{
iface->init = g_network_monitor_base_initable_init;
}
static gboolean
emit_network_changed (gpointer user_data)
{
GNetworkMonitorBase *monitor = user_data;
gboolean is_available;
g_object_ref (monitor);
if (monitor->priv->initializing)
monitor->priv->initializing = FALSE;
else
{
is_available = (monitor->priv->have_ipv4_default_route ||
monitor->priv->have_ipv6_default_route);
if (monitor->priv->is_available != is_available)
{
monitor->priv->is_available = is_available;
g_object_notify (G_OBJECT (monitor), "network-available");
}
g_signal_emit (monitor, network_changed_signal, 0, is_available);
}
g_source_unref (monitor->priv->network_changed_source);
monitor->priv->network_changed_source = NULL;
g_object_unref (monitor);
return FALSE;
}
static void
queue_network_changed (GNetworkMonitorBase *monitor)
{
if (!monitor->priv->network_changed_source)
{
GSource *source;
source = g_idle_source_new ();
/* Use G_PRIORITY_HIGH_IDLE priority so that multiple
* network-change-related notifications coming in at
* G_PRIORITY_DEFAULT will get coalesced into one signal
* emission.
*/
g_source_set_priority (source, G_PRIORITY_HIGH_IDLE);
g_source_set_callback (source, emit_network_changed, monitor, NULL);
g_source_attach (source, monitor->priv->context);
monitor->priv->network_changed_source = source;
}
/* Normally we wait to update is_available until we emit the signal,
* to keep things consistent. But when we're first creating the
* object, we want it to be correct right away.
*/
if (monitor->priv->initializing)
{
monitor->priv->is_available = (monitor->priv->have_ipv4_default_route ||
monitor->priv->have_ipv6_default_route);
}
}
/**
* g_network_monitor_base_add_network:
* @monitor: the #GNetworkMonitorBase
* @network: a #GInetAddressMask
*
* Adds @network to @monitor's list of available networks.
*
* Since: 2.32
*/
void
g_network_monitor_base_add_network (GNetworkMonitorBase *monitor,
GInetAddressMask *network)
{
int i;
for (i = 0; i < monitor->priv->networks->len; i++)
{
if (g_inet_address_mask_equal (monitor->priv->networks->pdata[i], network))
return;
}
g_ptr_array_add (monitor->priv->networks, g_object_ref (network));
if (g_inet_address_mask_get_length (network) == 0)
{
switch (g_inet_address_mask_get_family (network))
{
case G_SOCKET_FAMILY_IPV4:
monitor->priv->have_ipv4_default_route = TRUE;
break;
case G_SOCKET_FAMILY_IPV6:
monitor->priv->have_ipv6_default_route = TRUE;
break;
default:
break;
}
}
/* Don't emit network-changed when multicast-link-local routing
* changes. This rather arbitrary decision is mostly because it
* seems to change quite often...
*/
if (g_inet_address_get_is_mc_link_local (g_inet_address_mask_get_address (network)))
return;
queue_network_changed (monitor);
}
/**
* g_network_monitor_base_remove_network:
* @monitor: the #GNetworkMonitorBase
* @network: a #GInetAddressMask
*
* Removes @network from @monitor's list of available networks.
*
* Since: 2.32
*/
void
g_network_monitor_base_remove_network (GNetworkMonitorBase *monitor,
GInetAddressMask *network)
{
int i;
for (i = 0; i < monitor->priv->networks->len; i++)
{
if (g_inet_address_mask_equal (monitor->priv->networks->pdata[i], network))
{
g_ptr_array_remove_index_fast (monitor->priv->networks, i);
if (g_inet_address_mask_get_length (network) == 0)
{
switch (g_inet_address_mask_get_family (network))
{
case G_SOCKET_FAMILY_IPV4:
monitor->priv->have_ipv4_default_route = FALSE;
break;
case G_SOCKET_FAMILY_IPV6:
monitor->priv->have_ipv6_default_route = FALSE;
break;
default:
break;
}
}
queue_network_changed (monitor);
return;
}
}
}
/**
* g_network_monitor_base_set_networks:
* @monitor: the #GNetworkMonitorBase
* @networks: (array length=length): an array of #GInetAddressMask
* @length: length of @networks
*
* Drops @monitor's current list of available networks and replaces
* it with @networks.
*/
void
g_network_monitor_base_set_networks (GNetworkMonitorBase *monitor,
GInetAddressMask **networks,
gint length)
{
int i;
g_ptr_array_set_size (monitor->priv->networks, 0);
monitor->priv->have_ipv4_default_route = FALSE;
monitor->priv->have_ipv6_default_route = FALSE;
for (i = 0; i < length; i++)
g_network_monitor_base_add_network (monitor, networks[i]);
}
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