Imported Upstream version 1.1.90 upstream/1.1.90

1 files changed, 439 insertions, 0 deletions

diff --git a/libnm/nm-device-tun.c b/libnm/nm-device-tun.c
new file mode 100644
index 00000000..ce2558f0
--- /dev/null
+++ b/libnm/nm-device-tun.c
@@ -0,0 +1,439 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+/*
+ * 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., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ * Copyright 2015 Red Hat, Inc.
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <arpa/inet.h>
+
+#include <nm-setting-connection.h>
+#include <nm-setting-tun.h>
+#include <nm-utils.h>
+
+#include "nm-default.h"
+#include "nm-device-tun.h"
+#include "nm-device-private.h"
+#include "nm-object-private.h"
+
+G_DEFINE_TYPE (NMDeviceTun, nm_device_tun, NM_TYPE_DEVICE)
+
+#define NM_DEVICE_TUN_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_DEVICE_TUN, NMDeviceTunPrivate))
+
+typedef struct {
+	char *hw_address;
+	char *mode;
+	gint64 owner;
+	gint64 group;
+	gboolean no_pi;
+	gboolean vnet_hdr;
+	gboolean multi_queue;
+} NMDeviceTunPrivate;
+
+enum {
+	PROP_0,
+	PROP_HW_ADDRESS,
+	PROP_MODE,
+	PROP_OWNER,
+	PROP_GROUP,
+	PROP_NO_PI,
+	PROP_VNET_HDR,
+	PROP_MULTI_QUEUE,
+
+	LAST_PROP
+};
+
+/**
+ * nm_device_tun_get_hw_address:
+ * @device: a #NMDeviceTun
+ *
+ * Gets the hardware (MAC) address of the #NMDeviceTun
+ *
+ * Returns: the hardware address. This is the internal string used by the
+ * device, and must not be modified.
+ *
+ * Since: 1.2
+ **/
+const char *
+nm_device_tun_get_hw_address (NMDeviceTun *device)
+{
+	g_return_val_if_fail (NM_IS_DEVICE_TUN (device), NULL);
+
+	return NM_DEVICE_TUN_GET_PRIVATE (device)->hw_address;
+}
+
+/**
+ * nm_device_tun_get_mode:
+ * @device: a #NMDeviceTun
+ *
+ * Returns the TUN/TAP mode for the device.
+ *
+ * Returns: 'tun' or 'tap'
+ *
+ * Since: 1.2
+ **/
+const char *
+nm_device_tun_get_mode (NMDeviceTun *device)
+{
+	g_return_val_if_fail (NM_IS_DEVICE_TUN (device), NULL);
+
+	return NM_DEVICE_TUN_GET_PRIVATE (device)->mode;
+}
+
+/**
+ * nm_device_tun_get_owner:
+ * @device: a #NMDeviceTun
+ *
+ * Gets the tunnel owner.
+ *
+ * Returns: the uid of the tunnel owner, or -1 if it has no owner.
+ *
+ * Since: 1.2
+ **/
+gint64
+nm_device_tun_get_owner (NMDeviceTun *device)
+{
+	g_return_val_if_fail (NM_IS_DEVICE_TUN (device), -1);
+
+	return NM_DEVICE_TUN_GET_PRIVATE (device)->owner;
+}
+
+/**
+ * nm_device_tun_get_group:
+ * @device: a #NMDeviceTun
+ *
+ * Gets the tunnel group.
+ *
+ * Returns: the gid of the tunnel group, or -1 if it has no owner.
+ *
+ * Since: 1.2
+ **/
+gint64
+nm_device_tun_get_group (NMDeviceTun *device)
+{
+	g_return_val_if_fail (NM_IS_DEVICE_TUN (device), -1);
+
+	return NM_DEVICE_TUN_GET_PRIVATE (device)->group;
+}
+
+/**
+ * nm_device_tun_get_pi:
+ * @device: a #NMDeviceTun
+ *
+ * Returns whether the #NMDeviceTun has the IFF_NO_PI flag.
+ *
+ * Returns: %TRUE if the device has the flag, %FALSE otherwise
+ *
+ * Since: 1.2
+ **/
+gboolean
+nm_device_tun_get_no_pi (NMDeviceTun *device)
+{
+	g_return_val_if_fail (NM_IS_DEVICE_TUN (device), FALSE);
+
+	return NM_DEVICE_TUN_GET_PRIVATE (device)->no_pi;
+}
+
+/**
+ * nm_device_tun_get_vnet_hdr:
+ * @device: a #NMDeviceTun
+ *
+ * Returns whether the #NMDeviceTun has the IFF_VNET_HDR flag.
+ *
+ * Returns: %TRUE if the device has the flag, %FALSE otherwise
+ *
+ * Since: 1.2
+ **/
+gboolean
+nm_device_tun_get_vnet_hdr (NMDeviceTun *device)
+{
+	g_return_val_if_fail (NM_IS_DEVICE_TUN (device), FALSE);
+
+	return NM_DEVICE_TUN_GET_PRIVATE (device)->vnet_hdr;
+}
+
+/**
+ * nm_device_tun_get_multi_queue:
+ * @device: a #NMDeviceTun
+ *
+ * Returns whether the #NMDeviceTun has the IFF_MULTI_QUEUE flag.
+ *
+ * Returns: %TRUE if the device doesn't have the flag, %FALSE otherwise
+ *
+ * Since: 1.2
+ **/
+gboolean
+nm_device_tun_get_multi_queue (NMDeviceTun *device)
+{
+	g_return_val_if_fail (NM_IS_DEVICE_TUN (device), FALSE);
+
+	return NM_DEVICE_TUN_GET_PRIVATE (device)->multi_queue;
+}
+
+static int
+tun_mode_from_string (const char *string)
+{
+	if (!g_strcmp0 (string, "tap"))
+		return NM_SETTING_TUN_MODE_TAP;
+	else
+		return NM_SETTING_TUN_MODE_TUN;
+}
+
+static gboolean
+connection_compatible (NMDevice *device, NMConnection *connection, GError **error)
+{
+	NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (device);
+	NMSettingTunMode mode;
+	NMSettingTun *s_tun;
+
+	if (!NM_DEVICE_CLASS (nm_device_tun_parent_class)->connection_compatible (device, connection, error))
+		return FALSE;
+
+	if (!nm_connection_is_type (connection, NM_SETTING_TUN_SETTING_NAME)) {
+		g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INCOMPATIBLE_CONNECTION,
+		                     _("The connection was not a tun connection."));
+		return FALSE;
+	}
+
+	s_tun = nm_connection_get_setting_tun (connection);
+
+	mode = tun_mode_from_string (priv->mode);
+	if (s_tun && mode != nm_setting_tun_get_mode (s_tun)) {
+		g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INCOMPATIBLE_CONNECTION,
+		                     _("The mode of the device and the connection didn't match"));
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static GType
+get_setting_type (NMDevice *device)
+{
+	return NM_TYPE_SETTING_TUN;
+}
+
+static const char *
+get_hw_address (NMDevice *device)
+{
+	return nm_device_tun_get_hw_address (NM_DEVICE_TUN (device));
+}
+
+/***********************************************************/
+
+static void
+nm_device_tun_init (NMDeviceTun *device)
+{
+	_nm_device_set_device_type (NM_DEVICE (device), NM_DEVICE_TYPE_TUN);
+}
+
+static void
+init_dbus (NMObject *object)
+{
+	NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (object);
+	const NMPropertiesInfo property_info[] = {
+		{ NM_DEVICE_TUN_HW_ADDRESS,  &priv->hw_address },
+		{ NM_DEVICE_TUN_MODE,        &priv->mode },
+		{ NM_DEVICE_TUN_OWNER,       &priv->owner },
+		{ NM_DEVICE_TUN_GROUP,       &priv->group },
+		{ NM_DEVICE_TUN_NO_PI,       &priv->no_pi },
+		{ NM_DEVICE_TUN_VNET_HDR,    &priv->vnet_hdr },
+		{ NM_DEVICE_TUN_MULTI_QUEUE, &priv->multi_queue },
+		{ NULL },
+	};
+
+	NM_OBJECT_CLASS (nm_device_tun_parent_class)->init_dbus (object);
+
+	_nm_object_register_properties (object,
+	                                NM_DBUS_INTERFACE_DEVICE_TUN,
+	                                property_info);
+}
+
+static void
+finalize (GObject *object)
+{
+	NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (object);
+
+	g_free (priv->mode);
+
+	G_OBJECT_CLASS (nm_device_tun_parent_class)->finalize (object);
+}
+
+static void
+get_property (GObject *object,
+              guint prop_id,
+              GValue *value,
+              GParamSpec *pspec)
+{
+	NMDeviceTun *device = NM_DEVICE_TUN (object);
+
+	switch (prop_id) {
+	case PROP_HW_ADDRESS:
+		g_value_set_string (value, nm_device_tun_get_hw_address (device));
+		break;
+	case PROP_MODE:
+		g_value_set_string (value, nm_device_tun_get_mode (device));
+		break;
+	case PROP_OWNER:
+		g_value_set_int64 (value, nm_device_tun_get_owner (device));
+		break;
+	case PROP_GROUP:
+		g_value_set_int64 (value, nm_device_tun_get_group (device));
+		break;
+	case PROP_NO_PI:
+		g_value_set_boolean (value, nm_device_tun_get_no_pi (device));
+		break;
+	case PROP_VNET_HDR:
+		g_value_set_boolean (value, nm_device_tun_get_vnet_hdr (device));
+		break;
+	case PROP_MULTI_QUEUE:
+		g_value_set_boolean (value, nm_device_tun_get_multi_queue (device));
+		break;
+
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+		break;
+	}
+}
+
+static void
+nm_device_tun_class_init (NMDeviceTunClass *gre_class)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (gre_class);
+	NMObjectClass *nm_object_class = NM_OBJECT_CLASS (gre_class);
+	NMDeviceClass *device_class = NM_DEVICE_CLASS (gre_class);
+
+	g_type_class_add_private (gre_class, sizeof (NMDeviceTunPrivate));
+
+	_nm_object_class_add_interface (nm_object_class, NM_DBUS_INTERFACE_DEVICE_TUN);
+
+	/* virtual methods */
+	object_class->finalize = finalize;
+	object_class->get_property = get_property;
+
+	nm_object_class->init_dbus = init_dbus;
+
+	device_class->connection_compatible = connection_compatible;
+	device_class->get_setting_type = get_setting_type;
+	device_class->get_hw_address = get_hw_address;
+
+	/* properties */
+
+	/**
+	 * NMDeviceTun:hw-address:
+	 *
+	 * The hardware (MAC) address of the device.
+	 *
+	 * Since: 1.2
+	 **/
+	g_object_class_install_property
+		(object_class, PROP_HW_ADDRESS,
+		 g_param_spec_string (NM_DEVICE_TUN_HW_ADDRESS, "", "",
+		                      NULL,
+		                      G_PARAM_READABLE |
+		                      G_PARAM_STATIC_STRINGS));
+
+	/**
+	 * NMDeviceTun:mode:
+	 *
+	 * The tunnel mode, either "tun" or "tap".
+	 *
+	 * Since: 1.2
+	 **/
+	g_object_class_install_property
+		(object_class, PROP_MODE,
+		 g_param_spec_string (NM_DEVICE_TUN_MODE, "", "",
+		                      NULL,
+		                      G_PARAM_READABLE |
+		                      G_PARAM_STATIC_STRINGS));
+
+	/**
+	 * NMDeviceTun:owner:
+	 *
+	 * The uid of the tunnel owner, or -1 if it has no owner.
+	 *
+	 * Since: 1.2
+	 **/
+	g_object_class_install_property
+		(object_class, PROP_OWNER,
+		 g_param_spec_int64 (NM_DEVICE_TUN_OWNER, "", "",
+		                     -1, G_MAXUINT32, -1,
+		                     G_PARAM_READABLE |
+		                     G_PARAM_STATIC_STRINGS));
+
+	/**
+	 * NMDeviceTun:group:
+	 *
+	 * The gid of the tunnel group, or -1 if it has no owner.
+	 *
+	 * Since: 1.2
+	 **/
+	g_object_class_install_property
+		(object_class, PROP_GROUP,
+		 g_param_spec_int64 (NM_DEVICE_TUN_GROUP, "", "",
+		                     -1, G_MAXUINT32, -1,
+		                     G_PARAM_READABLE |
+		                     G_PARAM_STATIC_STRINGS));
+
+	/**
+	 * NMDeviceTun:no-pi:
+	 *
+	 * The tunnel's "TUN_NO_PI" flag; true if no protocol info is
+	 * prepended to the tunnel packets.
+	 *
+	 * Since: 1.2
+	 **/
+	g_object_class_install_property
+		(object_class, PROP_NO_PI,
+		 g_param_spec_boolean (NM_DEVICE_TUN_NO_PI, "", "",
+		                       FALSE,
+		                       G_PARAM_READABLE |
+		                       G_PARAM_STATIC_STRINGS));
+
+	/**
+	 * NMDeviceTun:vnet-hdr:
+	 *
+	 * The tunnel's "TUN_VNET_HDR" flag; true if the tunnel packets
+	 * include a virtio network header.
+	 *
+	 * Since: 1.2
+	 **/
+	g_object_class_install_property
+		(object_class, PROP_VNET_HDR,
+		 g_param_spec_boolean (NM_DEVICE_TUN_VNET_HDR, "", "",
+		                       FALSE,
+		                       G_PARAM_READABLE |
+		                       G_PARAM_STATIC_STRINGS));
+
+	/**
+	 * NMDeviceTun:multi-queue:
+	 *
+	 * The tunnel's "TUN_TAP_MQ" flag; true if callers can connect to
+	 * the tap device multiple times, for multiple send/receive
+	 * queues.
+	 *
+	 * Since: 1.2
+	 **/
+	g_object_class_install_property
+		(object_class, PROP_MULTI_QUEUE,
+		 g_param_spec_boolean (NM_DEVICE_TUN_MULTI_QUEUE, "", "",
+		                       FALSE,
+		                       G_PARAM_READABLE |
+		                       G_PARAM_STATIC_STRINGS));
+}