NetworkManager/libnm-util/nm-connection.c

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */

/*
 * Dan Williams <dcbw@redhat.com>
 * Tambet Ingo <tambet@gmail.com>
 *
 * 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.
 *
 * (C) Copyright 2007 - 2011 Red Hat, Inc.
 * (C) Copyright 2007 - 2008 Novell, Inc.
 */

#include <glib-object.h>
#include <dbus/dbus-glib.h>
#include <string.h>
#include "nm-connection.h"
#include "nm-utils.h"
#include "nm-utils-private.h"
#include "nm-dbus-glib-types.h"
#include "nm-setting-private.h"

#include "nm-setting-8021x.h"
#include "nm-setting-bluetooth.h"
#include "nm-setting-connection.h"
#include "nm-setting-infiniband.h"
#include "nm-setting-ip4-config.h"
#include "nm-setting-ip6-config.h"
#include "nm-setting-ppp.h"
#include "nm-setting-pppoe.h"
#include "nm-setting-wimax.h"
#include "nm-setting-wired.h"
#include "nm-setting-adsl.h"
#include "nm-setting-wireless.h"
#include "nm-setting-wireless-security.h"
#include "nm-setting-serial.h"
#include "nm-setting-vpn.h"
#include "nm-setting-olpc-mesh.h"
#include "nm-setting-bond.h"
#include "nm-setting-bridge.h"
#include "nm-setting-bridge-port.h"
#include "nm-setting-vlan.h"
#include "nm-setting-serial.h"
#include "nm-setting-gsm.h"
#include "nm-setting-cdma.h"

/**
 * SECTION:nm-connection
 * @short_description: Describes a connection to specific network or provider
 * @include: nm-connection.h
 *
 * An #NMConnection describes all the settings and configuration values that
 * are necessary to configure network devices for operation on a specific
 * network.  Connections are the fundamental operating object for
 * NetworkManager; no device is connected without a #NMConnection, or
 * disconnected without having been connected with a #NMConnection.
 *
 * Each #NMConnection contains a list of #NMSetting objects usually referenced
 * by name (using nm_connection_get_setting_by_name()) or by type (with
 * nm_connection_get_setting()).  The settings describe the actual parameters
 * with which the network devices are configured, including device-specific
 * parameters (MTU, SSID, APN, channel, rate, etc) and IP-level parameters
 * (addresses, routes, addressing methods, etc).
 *
 */

/**
 * nm_connection_error_quark:
 *
 * Registers an error quark for #NMConnection if necessary.
 *
 * Returns: the error quark used for #NMConnection errors.
 **/
GQuark
nm_connection_error_quark (void)
{
	static GQuark quark;

	if (G_UNLIKELY (!quark))
		quark = g_quark_from_static_string ("nm-connection-error-quark");
	return quark;
}

typedef struct {
	GHashTable *settings;

	/* D-Bus path of the connection, if any */
	char *path;
} NMConnectionPrivate;

#define NM_CONNECTION_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_CONNECTION, NMConnectionPrivate))

G_DEFINE_TYPE (NMConnection, nm_connection, G_TYPE_OBJECT)

enum {
	PROP_0,
	PROP_PATH,

	LAST_PROP
};

enum {
	SECRETS_UPDATED,
	SECRETS_CLEARED,
	LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

/*************************************************************/

static GHashTable *registered_settings = NULL;

static void __attribute__((constructor))
_ensure_registered (void)
{
	g_type_init ();
	_nm_value_transforms_register ();
	if (G_UNLIKELY (registered_settings == NULL))
		registered_settings = g_hash_table_new (g_str_hash, g_str_equal);
}

typedef struct {
	GType type;
	guint32 priority;
	GQuark error_quark;
} SettingInfo;

/*
 * _nm_register_setting:
 * @name: the name of the #NMSetting object to register
 * @type: the #GType of the #NMSetting
 * @priority: the sort priority of the setting, see below
 * @error_quark: the setting's error quark
 *
 * INTERNAL ONLY: registers a setting's internal properties, like its priority
 * and its error quark type, with libnm-util.
 *
 * A setting's priority should roughly follow the OSI layer model, but it also
 * controls which settings get asked for secrets first.  Thus settings which
 * relate to things that must be working first, like hardware, should get a
 * higher priority than things which layer on top of the hardware.  For example,
 * the GSM/CDMA settings should provide secrets before the PPP setting does,
 * because a PIN is required to unlock the device before PPP can even start.
 * Even settings without secrets should be assigned the right priority.
 *
 * 0: reserved for the Connection setting
 *
 * 1: hardware-related settings like Ethernet, WiFi, Infiniband, Bridge, etc.
 * These priority 1 settings are also "base types", which means that at least
 * one of them is required for the connection to be valid, and their name is
 * valid in the 'type' property of the Connection setting.
 *
 * 2: hardware-related auxiliary settings that require a base setting to be
 * successful first, like WiFi security, 802.1x, etc.
 *
 * 3: hardware-independent settings that are required before IP connectivity
 * can be established, like PPP, PPPoE, etc.
 *
 * 4: IP-level stuff
 */
void
_nm_register_setting (const char *name,
                      const GType type,
                      const guint32 priority,
                      const GQuark error_quark)
{
	SettingInfo *info;

	g_return_if_fail (name != NULL);
	g_return_if_fail (type != G_TYPE_INVALID);
	g_return_if_fail (type != G_TYPE_NONE);
	g_return_if_fail (error_quark != 0);
	g_return_if_fail (priority <= 4);

	_ensure_registered ();

	if (G_LIKELY (g_hash_table_lookup (registered_settings, name)))
		return;

	if (priority == 0)
		g_assert_cmpstr (name, ==, NM_SETTING_CONNECTION_SETTING_NAME);

	info = g_slice_new0 (SettingInfo);
	info->type = type;
	info->priority = priority;
	info->error_quark = error_quark;
	g_hash_table_insert (registered_settings, (gpointer) name, info);
}

static guint32
_get_setting_priority (NMSetting *setting)
{
	GHashTableIter iter;
	SettingInfo *info;

	_ensure_registered ();

	g_hash_table_iter_init (&iter, registered_settings);
	while (g_hash_table_iter_next (&iter, NULL, (gpointer) &info)) {
		if (G_OBJECT_TYPE (setting) == info->type)
			return info->priority;
	}
	return G_MAXUINT32;
}

static gboolean
_is_setting_base_type (NMSetting *setting)
{
	/* Historical oddity: PPPoE is a base-type even though it's not
	 * priority 1.  It needs to be sorted *after* lower-level stuff like
	 * WiFi security or 802.1x for secrets, but it's still allowed as a
	 * base type.
	 */
	return _get_setting_priority (setting) == 1 || NM_IS_SETTING_PPPOE (setting);
}

/*************************************************************/

/**
 * nm_connection_lookup_setting_type:
 * @name: a setting name
 *
 * Returns the #GType of the setting's class for a given setting name.
 *
 * Returns: the #GType of the setting's class
 **/
GType
nm_connection_lookup_setting_type (const char *name)
{
	SettingInfo *info;

	g_return_val_if_fail (name != NULL, G_TYPE_NONE);

	_ensure_registered ();

	info = g_hash_table_lookup (registered_settings, name);
	if (info)
		return info->type;

	g_warning ("Unknown setting '%s'", name);
	return G_TYPE_INVALID;
}

/**
 * nm_connection_lookup_setting_type_by_quark:
 * @error_quark: a setting error quark
 *
 * Returns the #GType of the setting's class for a given setting error quark.
 * Useful for figuring out which setting a returned error is for.
 *
 * Returns: the #GType of the setting's class
 **/
GType
nm_connection_lookup_setting_type_by_quark (GQuark error_quark)
{
	SettingInfo *info;
	GHashTableIter iter;

	_ensure_registered ();

	g_hash_table_iter_init (&iter, registered_settings);
	while (g_hash_table_iter_next (&iter, NULL, (gpointer) &info)) {
		if (info->error_quark == error_quark)
			return info->type;
	}
	return G_TYPE_INVALID;
}

/**
 * nm_connection_create_setting:
 * @name: a setting name
 *
 * Create a new #NMSetting object of the desired type, given a setting name.
 *
 * Returns: (transfer full): the new setting object, or NULL if the setting name was unknown
 **/
NMSetting *
nm_connection_create_setting (const char *name)
{
	GType type;
	NMSetting *setting = NULL;

	g_return_val_if_fail (name != NULL, NULL);

	type = nm_connection_lookup_setting_type (name);
	if (type)
		setting = (NMSetting *) g_object_new (type, NULL);

	return setting;
}

/**
 * nm_connection_add_setting:
 * @connection: a #NMConnection
 * @setting: (transfer full): the #NMSetting to add to the connection object
 *
 * Adds a #NMSetting to the connection, replacing any previous #NMSetting of the
 * same name which has previously been added to the #NMConnection.  The
 * connection takes ownership of the #NMSetting object and does not increase
 * the setting object's reference count.
 **/
void
nm_connection_add_setting (NMConnection *connection, NMSetting *setting)
{
	g_return_if_fail (NM_IS_CONNECTION (connection));
	g_return_if_fail (NM_IS_SETTING (setting));

	g_hash_table_insert (NM_CONNECTION_GET_PRIVATE (connection)->settings,
	                     (gpointer) G_OBJECT_TYPE_NAME (setting),
	                     setting);
}

/**
 * nm_connection_remove_setting:
 * @connection: a #NMConnection
 * @setting_type: the #GType of the setting object to remove
 *
 * Removes the #NMSetting with the given #GType from the #NMConnection.  This
 * operation dereferences the #NMSetting object.
 **/
void
nm_connection_remove_setting (NMConnection *connection, GType setting_type)
{
	g_return_if_fail (NM_IS_CONNECTION (connection));
	g_return_if_fail (g_type_is_a (setting_type, NM_TYPE_SETTING));

	g_hash_table_remove (NM_CONNECTION_GET_PRIVATE (connection)->settings, g_type_name (setting_type));
}

/**
 * nm_connection_get_setting:
 * @connection: a #NMConnection
 * @setting_type: the #GType of the setting object to return
 *
 * Gets the #NMSetting with the given #GType, if one has been previously added
 * to the #NMConnection.
 *
 * Returns: (transfer none): the #NMSetting, or NULL if no setting of that type was previously
 * added to the #NMConnection
 **/
NMSetting *
nm_connection_get_setting (NMConnection *connection, GType setting_type)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);
	g_return_val_if_fail (g_type_is_a (setting_type, NM_TYPE_SETTING), NULL);

	return (NMSetting *) g_hash_table_lookup (NM_CONNECTION_GET_PRIVATE (connection)->settings,
	                                          g_type_name (setting_type));
}

/**
 * nm_connection_get_setting_by_name:
 * @connection: a #NMConnection
 * @name: a setting name
 *
 * Gets the #NMSetting with the given name, if one has been previously added
 * the the #NMConnection.
 *
 * Returns: (transfer none): the #NMSetting, or NULL if no setting with that name was previously
 * added to the #NMConnection
 **/
NMSetting *
nm_connection_get_setting_by_name (NMConnection *connection, const char *name)
{
	GType type;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);
	g_return_val_if_fail (name != NULL, NULL);

	type = nm_connection_lookup_setting_type (name);

	return type ? nm_connection_get_setting (connection, type) : NULL;
}

/* not exposed until we actually need it */
static NMSetting *
_get_type_setting (NMConnection *connection)
{
	NMSettingConnection *s_con;
	const char *type;
	NMSetting *base;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	s_con = nm_connection_get_setting_connection (connection);
	g_assert (s_con);

	type = nm_setting_connection_get_connection_type (s_con);
	g_assert (type);

	base = nm_connection_get_setting_by_name (connection, type);
	g_assert (base);

	return base;
}

static gboolean
validate_permissions_type (GHashTable *hash, GError **error)
{
	GHashTable *s_con;
	GValue *permissions;

	/* Ensure the connection::permissions item (if present) is the correct
	 * type, otherwise the g_object_set() will throw a warning and ignore the
	 * error, leaving us with no permissions.
	 */
	s_con = g_hash_table_lookup (hash, NM_SETTING_CONNECTION_SETTING_NAME);
	if (s_con) {
		permissions = g_hash_table_lookup (s_con, NM_SETTING_CONNECTION_PERMISSIONS);
		if (permissions) {
			if (   !G_VALUE_HOLDS (permissions, G_TYPE_STRV)
			    && !G_VALUE_HOLDS (permissions, DBUS_TYPE_G_LIST_OF_STRING)) {
				g_set_error_literal (error,
				                     NM_SETTING_ERROR,
				                     NM_SETTING_ERROR_PROPERTY_TYPE_MISMATCH,
				                     "Wrong permissions property type; should be a list of strings.");
				return FALSE;
			}
		}
	}
	return TRUE;
}

static gboolean
hash_to_connection (NMConnection *connection, GHashTable *new, GError **error)
{
	GHashTableIter iter;
	const char *setting_name;
	GHashTable *setting_hash;
	NMSetting *setting = NULL;
	GType type;

	g_hash_table_remove_all (NM_CONNECTION_GET_PRIVATE (connection)->settings);
	g_hash_table_iter_init (&iter, new);
	while (g_hash_table_iter_next (&iter, (gpointer) &setting_name, (gpointer) &setting_hash)) {
		type = nm_connection_lookup_setting_type (setting_name);
		if (type)
			setting = nm_setting_new_from_hash (type, setting_hash);
		if (setting)
			nm_connection_add_setting (connection, setting);
	}
	return nm_connection_verify (connection, error);
}

/**
 * nm_connection_replace_settings:
 * @connection: a #NMConnection
 * @new_settings: (element-type utf8 GLib.HashTable): a #GHashTable of settings
 * @error: location to store error, or %NULL
 *
 * Returns: %TRUE if the settings were valid and added to the connection, %FALSE
 * if they were not
 **/
gboolean
nm_connection_replace_settings (NMConnection *connection,
                                GHashTable *new_settings,
                                GError **error)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), FALSE);
	g_return_val_if_fail (new_settings != NULL, FALSE);
	if (error)
		g_return_val_if_fail (*error == NULL, FALSE);

	if (!validate_permissions_type (new_settings, error))
		return FALSE;
	return hash_to_connection (connection, new_settings, error);
}

/**
 * nm_connection_compare:
 * @a: a #NMConnection
 * @b: a second #NMConnection to compare with the first
 * @flags: compare flags, e.g. %NM_SETTING_COMPARE_FLAG_EXACT
 *
 * Compares two #NMConnection objects for similarity, with comparison behavior
 * modified by a set of flags.  See nm_setting_compare() for a description of
 * each flag's behavior.
 *
 * Returns: %TRUE if the comparison succeeds, %FALSE if it does not
 **/
gboolean
nm_connection_compare (NMConnection *a,
                       NMConnection *b,
                       NMSettingCompareFlags flags)
{
	GHashTableIter iter;
	NMSetting *src;

	if (!a && !b)
		return TRUE;

	if (!a || !b)
		return FALSE;

	/* A / B: ensure all settings in A match corresponding ones in B */
	g_hash_table_iter_init (&iter, NM_CONNECTION_GET_PRIVATE (a)->settings);
	while (g_hash_table_iter_next (&iter, NULL, (gpointer) &src)) {
		NMSetting *cmp = nm_connection_get_setting (b, G_OBJECT_TYPE (src));

		if (!cmp || !nm_setting_compare (src, cmp, flags))
			return FALSE;
	}

	/* B / A: ensure settings in B that are not in A make the comparison fail */
	if (g_hash_table_size (NM_CONNECTION_GET_PRIVATE (a)->settings) !=
		g_hash_table_size (NM_CONNECTION_GET_PRIVATE (b)->settings))
		return FALSE;

	return TRUE;
}


static void
diff_one_connection (NMConnection *a,
                     NMConnection *b,
                     NMSettingCompareFlags flags,
                     gboolean invert_results,
                     GHashTable *diffs)
{
	NMConnectionPrivate *priv = NM_CONNECTION_GET_PRIVATE (a);
	GHashTableIter iter;
	NMSetting *a_setting = NULL;

	g_hash_table_iter_init (&iter, priv->settings);
	while (g_hash_table_iter_next (&iter, NULL, (gpointer) &a_setting)) {
		NMSetting *b_setting = NULL;
		const char *setting_name = nm_setting_get_name (a_setting);
		GHashTable *results;
		gboolean new_results = TRUE;

		if (b)
			b_setting = nm_connection_get_setting (b, G_OBJECT_TYPE (a_setting));

		results = g_hash_table_lookup (diffs, setting_name);
		if (results)
			new_results = FALSE;

		if (!nm_setting_diff (a_setting, b_setting, flags, invert_results, &results)) {
			if (new_results)
				g_hash_table_insert (diffs, g_strdup (setting_name), results);
		}
	}
}

/**
 * nm_connection_diff:
 * @a: a #NMConnection
 * @b: a second #NMConnection to compare with the first
 * @flags: compare flags, e.g. %NM_SETTING_COMPARE_FLAG_EXACT
 * @out_settings: (element-type utf8 GLib.HashTable): if the
 * connections differ, on return a hash table mapping setting names to
 * second-level GHashTable (utf8 to guint32), which contains the key names that
 * differ mapped to one or more of %NMSettingDiffResult as a bitfield
 *
 * Compares two #NMConnection objects for similarity, with comparison behavior
 * modified by a set of flags.  See nm_setting_compare() for a description of
 * each flag's behavior.  If the connections differ, settings and keys within
 * each setting that differ are added to the returned @out_settings hash table.
 * No values are returned, only key names.
 *
 * Returns: %TRUE if the connections contain the same values, %FALSE if they do
 * not
 **/
gboolean
nm_connection_diff (NMConnection *a,
                    NMConnection *b,
                    NMSettingCompareFlags flags,
                    GHashTable **out_settings)
{
	GHashTable *diffs;

	g_return_val_if_fail (NM_IS_CONNECTION (a), FALSE);
	g_return_val_if_fail (out_settings != NULL, FALSE);
	g_return_val_if_fail (*out_settings == NULL, FALSE);
	if (b)
		g_return_val_if_fail (NM_IS_CONNECTION (b), FALSE);

	if (a == b)
		return TRUE;

	diffs = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify) g_hash_table_destroy);

	/* Diff A to B, then B to A to capture keys in B that aren't in A */
	diff_one_connection (a, b, flags, FALSE, diffs);
	if (b)
		diff_one_connection (b, a, flags, TRUE, diffs);

	if (g_hash_table_size (diffs) == 0)
		g_hash_table_destroy (diffs);
	else
		*out_settings = diffs;

	return *out_settings ? FALSE : TRUE;
}

/**
 * nm_connection_verify:
 * @connection: the #NMConnection to verify
 * @error: location to store error, or %NULL
 *
 * Validates the connection and all its settings.  Each setting's properties
 * have allowed values, and some values are dependent on other values.  For
 * example, if a WiFi connection is security enabled, the #NMSettingWireless
 * setting object's 'security' property must contain the setting name of the
 * #NMSettingWirelessSecurity object, which must also be present in the 
 * connection for the connection to be valid.  As another example, the
 * #NMSettingWired object's 'mac-address' property must be a validly formatted
 * MAC address.  The returned #GError contains information about which
 * setting and which property failed validation, and how it failed validation.
 *
 * Returns: %TRUE if the connection is valid, %FALSE if it is not
 **/
gboolean
nm_connection_verify (NMConnection *connection, GError **error)
{
	NMConnectionPrivate *priv;
	NMSettingConnection *s_con;
	GHashTableIter iter;
	gpointer value;
	GSList *all_settings = NULL;
	gboolean success = TRUE;
	NMSetting *base;
	const char *ctype;

	if (error)
		g_return_val_if_fail (*error == NULL, FALSE);

	if (!NM_IS_CONNECTION (connection)) {
		g_set_error_literal (error,
		                     NM_SETTING_CONNECTION_ERROR,
		                     NM_SETTING_CONNECTION_ERROR_UNKNOWN,
		                     "invalid connection; failed verification");
		g_return_val_if_fail (NM_IS_CONNECTION (connection), FALSE);
	}

	priv = NM_CONNECTION_GET_PRIVATE (connection);

	/* First, make sure there's at least 'connection' setting */
	s_con = nm_connection_get_setting_connection (connection);
	if (!s_con) {
		g_set_error_literal (error,
		                     NM_CONNECTION_ERROR,
		                     NM_CONNECTION_ERROR_CONNECTION_SETTING_NOT_FOUND,
		                     "connection setting not found");
		return FALSE;
	}

	/* Build up the list of settings */
	g_hash_table_iter_init (&iter, priv->settings);
	while (g_hash_table_iter_next (&iter, NULL, &value))
		all_settings = g_slist_append (all_settings, value);

	/* Now, run the verify function of each setting */
	g_hash_table_iter_init (&iter, priv->settings);
	while (g_hash_table_iter_next (&iter, NULL, &value) && success)
		success = nm_setting_verify (NM_SETTING (value), all_settings, error);
	g_slist_free (all_settings);

	if (success == FALSE)
		return FALSE;

	/* Now make sure the given 'type' setting can actually be the base setting
	 * of the connection.  Can't have type=ppp for example.
	 */
	ctype = nm_setting_connection_get_connection_type (s_con);
	if (!ctype) {
		g_set_error_literal (error,
		                     NM_CONNECTION_ERROR,
		                     NM_CONNECTION_ERROR_CONNECTION_TYPE_INVALID,
		                     "connection type missing");
		return FALSE;
	}

	base = nm_connection_get_setting_by_name (connection, ctype);
	if (!base) {
		g_set_error_literal (error,
		                     NM_CONNECTION_ERROR,
		                     NM_CONNECTION_ERROR_CONNECTION_TYPE_INVALID,
		                     "base setting GType not found");
		return FALSE;
	}

	if (!_is_setting_base_type (base)) {
		g_set_error (error,
			         NM_CONNECTION_ERROR,
			         NM_CONNECTION_ERROR_CONNECTION_TYPE_INVALID,
			         "connection type '%s' is not a base type",
			         ctype);
		return FALSE;
	}

	return TRUE;
}

/**
 * nm_connection_update_secrets:
 * @connection: the #NMConnection
 * @setting_name: the setting object name to which the secrets apply
 * @secrets: (element-type utf8 GObject.Value): a #GHashTable mapping
 * string:#GValue of setting property names and secrets of the given @setting_name
 * @error: location to store error, or %NULL
 *
 * Update the specified setting's secrets, given a hash table of secrets
 * intended for that setting (deserialized from D-Bus for example).  Will also
 * extract the given setting's secrets hash if given a hash of hashes, as would
 * be returned from nm_connection_to_hash().  If @setting_name is %NULL, expects
 * a fully serialized #NMConnection as returned by nm_connection_to_hash() and
 * will update all secrets from all settings contained in @secrets.
 *
 * Returns: %TRUE if the secrets were successfully updated, %FALSE if the update
 * failed (tried to update secrets for a setting that doesn't exist, etc)
 **/
gboolean
nm_connection_update_secrets (NMConnection *connection,
                              const char *setting_name,
                              GHashTable *secrets,
                              GError **error)
{
	NMSetting *setting;
	gboolean success;
	GHashTable *tmp;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), FALSE);
	g_return_val_if_fail (secrets != NULL, FALSE);
	if (error)
		g_return_val_if_fail (*error == NULL, FALSE);

	if (setting_name) {
		/* Update just one setting */
		setting = nm_connection_get_setting_by_name (connection, setting_name);
		if (!setting) {
			g_set_error_literal (error,
				                 NM_CONNECTION_ERROR,
				                 NM_CONNECTION_ERROR_SETTING_NOT_FOUND,
				                 setting_name);
			return FALSE;
		}

		/* Check if this is a hash of hashes, ie a full deserialized connection,
		 * not just a single hashed setting.
		 */
		tmp = g_hash_table_lookup (secrets, setting_name);
		success = nm_setting_update_secrets (setting, tmp ? tmp : secrets, error);
	} else {
		GHashTableIter iter;
		const char *name;

		success = TRUE; /* Just in case 'secrets' has no elements */

		/* Try as a serialized connection (GHashTable of GHashTables) */
		g_hash_table_iter_init (&iter, secrets);
		while (g_hash_table_iter_next (&iter, (gpointer) &name, (gpointer) &tmp)) {
			setting = nm_connection_get_setting_by_name (connection, name);
			if (!setting) {
				g_set_error_literal (error,
						             NM_CONNECTION_ERROR,
						             NM_CONNECTION_ERROR_SETTING_NOT_FOUND,
						             name);
				return FALSE;
			}

			/* Update the secrets for this setting */
			success = nm_setting_update_secrets (setting, tmp, error);
			if (success == FALSE)
				break;
		}
	}
	if (success)
		g_signal_emit (connection, signals[SECRETS_UPDATED], 0, setting_name);
	return success;
}

static gint
setting_priority_compare (gconstpointer a, gconstpointer b)
{
	guint32 prio_a, prio_b;

	prio_a = _get_setting_priority (NM_SETTING (a));
	prio_b = _get_setting_priority (NM_SETTING (b));

	if (prio_a < prio_b)
		return -1;
	else if (prio_a == prio_b)
		return 0;
	return 1;
}

/**
 * nm_connection_need_secrets:
 * @connection: the #NMConnection
 * @hints: (out callee-allocates) (element-type utf8) (allow-none) (transfer full):
 *   the address of a pointer to a #GPtrArray, initialized to NULL, which on
 *   return points to an allocated #GPtrArray containing the property names of
 *   secrets of the #NMSetting which may be required; the caller owns the array
 *   and must free the each array element with g_free(), as well as the array
 *   itself with g_ptr_array_free()
 *
 * Returns the name of the first setting object in the connection which would
 * need secrets to make a successful connection.  The returned hints are only
 * intended as a guide to what secrets may be required, because in some
 * circumstances, there is no way to conclusively determine exactly which
 * secrets are needed.
 *
 * Returns: the setting name of the #NMSetting object which has invalid or
 *   missing secrets
 **/
const char *
nm_connection_need_secrets (NMConnection *connection,
                            GPtrArray **hints)
{
	NMConnectionPrivate *priv;
	GHashTableIter hiter;
	GSList *settings = NULL;
	GSList *iter;
	const char *name = NULL;
	NMSetting *setting;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);
	if (hints)
		g_return_val_if_fail (*hints == NULL, NULL);

	priv = NM_CONNECTION_GET_PRIVATE (connection);

	/* Get list of settings in priority order */
	g_hash_table_iter_init (&hiter, priv->settings);
	while (g_hash_table_iter_next (&hiter, NULL, (gpointer) &setting))
		settings = g_slist_insert_sorted (settings, setting, setting_priority_compare);

	for (iter = settings; iter; iter = g_slist_next (iter)) {
		GPtrArray *secrets;

		setting = NM_SETTING (iter->data);
		secrets = nm_setting_need_secrets (setting);
		if (secrets) {
			if (hints)
				*hints = secrets;
			else
				g_ptr_array_free (secrets, TRUE);

			name = nm_setting_get_name (setting);
			break;
		}
	}

	g_slist_free (settings);
	return name;
}

/**
 * nm_connection_clear_secrets:
 * @connection: the #NMConnection
 *
 * Clears and frees any secrets that may be stored in the connection, to avoid
 * keeping secret data in memory when not needed.
 **/
void
nm_connection_clear_secrets (NMConnection *connection)
{
	GHashTableIter iter;
	NMSetting *setting;

	g_return_if_fail (NM_IS_CONNECTION (connection));

	g_hash_table_iter_init (&iter, NM_CONNECTION_GET_PRIVATE (connection)->settings);
	while (g_hash_table_iter_next (&iter, NULL, (gpointer) &setting))
		nm_setting_clear_secrets (setting);

	g_signal_emit (connection, signals[SECRETS_CLEARED], 0);
}

/**
 * nm_connection_clear_secrets_with_flags:
 * @connection: the #NMConnection
 * @func: (scope call): function to be called to determine whether a
 *     specific secret should be cleared or not
 * @user_data: caller-supplied data passed to @func
 *
 * Clears and frees secrets determined by @func.
 **/
void
nm_connection_clear_secrets_with_flags (NMConnection *connection,
                                        NMSettingClearSecretsWithFlagsFn func,
                                        gpointer user_data)
{
	GHashTableIter iter;
	NMSetting *setting;

	g_return_if_fail (NM_IS_CONNECTION (connection));

	g_hash_table_iter_init (&iter, NM_CONNECTION_GET_PRIVATE (connection)->settings);
	while (g_hash_table_iter_next (&iter, NULL, (gpointer) &setting))
		nm_setting_clear_secrets_with_flags (setting, func, user_data);

	g_signal_emit (connection, signals[SECRETS_CLEARED], 0);
}

/**
 * nm_connection_to_hash:
 * @connection: the #NMConnection
 * @flags: hash flags, e.g. %NM_SETTING_HASH_FLAG_ALL
 *
 * Converts the #NMConnection into a #GHashTable describing the connection,
 * suitable for marshalling over D-Bus or serializing.  The hash table mapping
 * is string:#GHashTable with each element in the returned hash representing
 * a #NMSetting object.  The keys are setting object names, and the values
 * are #GHashTables mapping string:GValue, each of which represents the
 * properties of the #NMSetting object.
 *
 * Returns: (transfer full) (element-type utf8 GLib.HashTable): a new
 * #GHashTable describing the connection, its settings, and each setting's
 * properties.  The caller owns the hash table and must unref the hash table
 * with g_hash_table_unref() when it is no longer needed.
 **/
GHashTable *
nm_connection_to_hash (NMConnection *connection, NMSettingHashFlags flags)
{
	NMConnectionPrivate *priv;
	GHashTableIter iter;
	gpointer key, data;
	GHashTable *ret, *setting_hash;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	ret = g_hash_table_new_full (g_str_hash, g_str_equal,
	                             g_free, (GDestroyNotify) g_hash_table_destroy);

	priv = NM_CONNECTION_GET_PRIVATE (connection);

	/* Add each setting's hash to the main hash */
	g_hash_table_iter_init (&iter, priv->settings);
	while (g_hash_table_iter_next (&iter, &key, &data)) {
		NMSetting *setting = NM_SETTING (data);

		setting_hash = nm_setting_to_hash (setting, flags);
		if (setting_hash)
			g_hash_table_insert (ret, g_strdup (nm_setting_get_name (setting)), setting_hash);
	}

	/* Don't send empty hashes */
	if (g_hash_table_size (ret) < 1) {
		g_hash_table_destroy (ret);
		ret = NULL;
	}

	return ret;
}

/**
 * nm_connection_is_type:
 * @connection: the #NMConnection
 * @type: a setting name to check the connection's type against (like 
 * %NM_SETTING_WIRELESS_SETTING_NAME or %NM_SETTING_WIRED_SETTING_NAME)
 *
 * A convenience function to check if the given @connection is a particular
 * type (ie wired, wifi, ppp, etc). Checks the #NMSettingConnection:type
 * property of the connection and matches that against @type.
 *
 * Returns: %TRUE if the connection is of the given @type, %FALSE if not
 **/
gboolean
nm_connection_is_type (NMConnection *connection, const char *type)
{
	NMSettingConnection *s_con;
	const char *type2;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), FALSE);
	g_return_val_if_fail (type != NULL, FALSE);

	s_con = nm_connection_get_setting_connection (connection);
	g_assert (s_con);

	type2 = nm_setting_connection_get_connection_type (s_con);
	g_assert (type2);

	return !strcmp (type2, type);
}

/**
 * nm_connection_for_each_setting_value:
 * @connection: the #NMConnection
 * @func: (scope call): user-supplied function called for each setting's property
 * @user_data: user data passed to @func at each invocation
 *
 * Iterates over the properties of each #NMSetting object in the #NMConnection,
 * calling the supplied user function for each property.
 **/
void
nm_connection_for_each_setting_value (NMConnection *connection,
                                      NMSettingValueIterFn func,
                                      gpointer user_data)
{
	GHashTableIter iter;
	gpointer value;

	g_return_if_fail (NM_IS_CONNECTION (connection));
	g_return_if_fail (func != NULL);

	g_hash_table_iter_init (&iter, NM_CONNECTION_GET_PRIVATE (connection)->settings);
	while (g_hash_table_iter_next (&iter, NULL, &value))
		nm_setting_enumerate_values (NM_SETTING (value), func, user_data);
}

/**
 * nm_connection_dump:
 * @connection: the #NMConnection
 *
 * Print the connection to stdout.  For debugging purposes ONLY, should NOT
 * be used for serialization of the connection or machine-parsed in any way. The
 * output format is not guaranteed to be stable and may change at any time.
 **/
void
nm_connection_dump (NMConnection *connection)
{
	GHashTableIter iter;
	NMSetting *setting;
	const char *setting_name;
	char *str;

	g_return_if_fail (NM_IS_CONNECTION (connection));

	g_hash_table_iter_init (&iter, NM_CONNECTION_GET_PRIVATE (connection)->settings);
	while (g_hash_table_iter_next (&iter, (gpointer) &setting_name, (gpointer) &setting)) {
		str = nm_setting_to_string (setting);
		g_print ("%s\n", str);
		g_free (str);
	}
}

/**
 * nm_connection_set_path:
 * @connection: the #NMConnection
 * @path: the D-Bus path of the connection as given by the settings service
 * which provides the connection
 *
 * Sets the D-Bus path of the connection.  This property is not serialized, and
 * is only for the reference of the caller.  Sets the #NMConnection:path
 * property.
 **/
void
nm_connection_set_path (NMConnection *connection, const char *path)
{
	NMConnectionPrivate *priv;

	g_return_if_fail (NM_IS_CONNECTION (connection));

	priv = NM_CONNECTION_GET_PRIVATE (connection);

	g_free (priv->path);
	priv->path = NULL;

	if (path)
		priv->path = g_strdup (path);
}

/**
 * nm_connection_get_path:
 * @connection: the #NMConnection
 *
 * Returns the connection's D-Bus path.
 *
 * Returns: the D-Bus path of the connection, previously set by a call to
 * nm_connection_set_path().
 **/
const char *
nm_connection_get_path (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return NM_CONNECTION_GET_PRIVATE (connection)->path;
}

/**
 * nm_connection_get_virtual_iface_name:
 * @connection: The #NMConnection
 *
 * Returns the name of the virtual kernel interface which the connection
 * needs to use if specified in the settings. This function abstracts all
 * connection types which require this functionality. For all other
 * connection types, this function will return NULL.
 *
 * Returns: Name of the kernel interface or NULL
 */
const char *
nm_connection_get_virtual_iface_name (NMConnection *connection)
{
	NMSetting *base;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	base = _get_type_setting (connection);
	g_assert (base);

	return nm_setting_get_virtual_iface_name (base);
}

/**
 * nm_connection_new:
 *
 * Creates a new #NMConnection object with no #NMSetting objects.
 *
 * Returns: the new empty #NMConnection object
 **/
NMConnection *
nm_connection_new (void)
{
	return (NMConnection *) g_object_new (NM_TYPE_CONNECTION, NULL);
}

/**
 * nm_connection_new_from_hash:
 * @hash: (element-type utf8 GLib.HashTable): the #GHashTable describing
 * the connection
 * @error: on unsuccessful return, an error
 *
 * Creates a new #NMConnection from a hash table describing the connection.  See
 * nm_connection_to_hash() for a description of the expected hash table.
 *
 * Returns: the new #NMConnection object, populated with settings created
 * from the values in the hash table, or NULL if the connection failed to
 * validate
 **/
NMConnection *
nm_connection_new_from_hash (GHashTable *hash, GError **error)
{
	NMConnection *connection;

	g_return_val_if_fail (hash != NULL, NULL);

	if (!validate_permissions_type (hash, error))
		return NULL;

	connection = nm_connection_new ();
	if (!hash_to_connection (connection, hash, error)) {
		g_object_unref (connection);
		return NULL;
	}
	return connection;
}

/**
 * nm_connection_duplicate:
 * @connection: the #NMConnection to duplicate
 *
 * Duplicates a #NMConnection.
 *
 * Returns: (transfer full): a new #NMConnection containing the same settings and properties
 * as the source #NMConnection
 **/
NMConnection *
nm_connection_duplicate (NMConnection *connection)
{
	NMConnection *dup;
	GHashTableIter iter;
	NMSetting *setting;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	dup = nm_connection_new ();
	nm_connection_set_path (dup, nm_connection_get_path (connection));

	g_hash_table_iter_init (&iter, NM_CONNECTION_GET_PRIVATE (connection)->settings);
	while (g_hash_table_iter_next (&iter, NULL, (gpointer) &setting))
		nm_connection_add_setting (dup, nm_setting_duplicate (setting));

	return dup;
}

/**
 * nm_connection_get_uuid:
 * @connection: the #NMConnection
 *
 * A shortcut to return the UUID from the connection's #NMSettingConnection.
 *
 * Returns: the UUID from the connection's 'connection' setting
 **/
const char *
nm_connection_get_uuid (NMConnection *connection)
{
	NMSettingConnection *s_con;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	s_con = nm_connection_get_setting_connection (connection);
	g_return_val_if_fail (s_con != NULL, NULL);

	return nm_setting_connection_get_uuid (s_con);
}

/**
 * nm_connection_get_id:
 * @connection: the #NMConnection
 *
 * A shortcut to return the ID from the connection's #NMSettingConnection.
 *
 * Returns: the ID from the connection's 'connection' setting
 **/
const char *
nm_connection_get_id (NMConnection *connection)
{
	NMSettingConnection *s_con;

	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	s_con = nm_connection_get_setting_connection (connection);
	g_return_val_if_fail (s_con != NULL, NULL);

	return nm_setting_connection_get_id (s_con);
}

/*************************************************************/

/**
 * nm_connection_get_setting_802_1x:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSetting8021x the connection might contain.
 *
 * Returns: (transfer none): an #NMSetting8021x if the connection contains one, otherwise NULL
 **/
NMSetting8021x *
nm_connection_get_setting_802_1x (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSetting8021x *) nm_connection_get_setting (connection, NM_TYPE_SETTING_802_1X);
}

/**
 * nm_connection_get_setting_bluetooth:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingBluetooth the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingBluetooth if the connection contains one, otherwise NULL
 **/
NMSettingBluetooth *
nm_connection_get_setting_bluetooth (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingBluetooth *) nm_connection_get_setting (connection, NM_TYPE_SETTING_BLUETOOTH);
}

/**
 * nm_connection_get_setting_bond:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingBond the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingBond if the connection contains one, otherwise NULL
 **/
NMSettingBond *
nm_connection_get_setting_bond (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingBond *) nm_connection_get_setting (connection, NM_TYPE_SETTING_BOND);
}

/**
 * nm_connection_get_setting_bridge:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingBridge the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingBridge if the connection contains one, otherwise NULL
 **/
NMSettingBridge *
nm_connection_get_setting_bridge (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingBridge *) nm_connection_get_setting (connection, NM_TYPE_SETTING_BRIDGE);
}

/**
 * nm_connection_get_setting_cdma:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingCdma the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingCdma if the connection contains one, otherwise NULL
 **/
NMSettingCdma *
nm_connection_get_setting_cdma (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingCdma *) nm_connection_get_setting (connection, NM_TYPE_SETTING_CDMA);
}

/**
 * nm_connection_get_setting_connection:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingConnection the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingConnection if the connection contains one, otherwise NULL
 **/
NMSettingConnection *
nm_connection_get_setting_connection (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingConnection *) nm_connection_get_setting (connection, NM_TYPE_SETTING_CONNECTION);
}

/**
 * nm_connection_get_setting_gsm:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingGsm the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingGsm if the connection contains one, otherwise NULL
 **/
NMSettingGsm *
nm_connection_get_setting_gsm (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingGsm *) nm_connection_get_setting (connection, NM_TYPE_SETTING_GSM);
}

/**
 * nm_connection_get_setting_infiniband:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingInfiniband the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingInfiniband if the connection contains one, otherwise NULL
 **/
NMSettingInfiniband *
nm_connection_get_setting_infiniband (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingInfiniband *) nm_connection_get_setting (connection, NM_TYPE_SETTING_INFINIBAND);
}

/**
 * nm_connection_get_setting_ip4_config:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingIP4Config the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingIP4Config if the connection contains one, otherwise NULL
 **/
NMSettingIP4Config *
nm_connection_get_setting_ip4_config (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingIP4Config *) nm_connection_get_setting (connection, NM_TYPE_SETTING_IP4_CONFIG);
}

/**
 * nm_connection_get_setting_ip6_config:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingIP6Config the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingIP6Config if the connection contains one, otherwise NULL
 **/
NMSettingIP6Config *
nm_connection_get_setting_ip6_config (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingIP6Config *) nm_connection_get_setting (connection, NM_TYPE_SETTING_IP6_CONFIG);
}

/**
 * nm_connection_get_setting_olpc_mesh:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingOlpcMesh the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingOlpcMesh if the connection contains one, otherwise NULL
 **/
NMSettingOlpcMesh *
nm_connection_get_setting_olpc_mesh (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingOlpcMesh *) nm_connection_get_setting (connection, NM_TYPE_SETTING_OLPC_MESH);
}

/**
 * nm_connection_get_setting_ppp:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingPPP the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingPPP if the connection contains one, otherwise NULL
 **/
NMSettingPPP *
nm_connection_get_setting_ppp (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingPPP *) nm_connection_get_setting (connection, NM_TYPE_SETTING_PPP);
}

/**
 * nm_connection_get_setting_pppoe:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingPPPOE the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingPPPOE if the connection contains one, otherwise NULL
 **/
NMSettingPPPOE *
nm_connection_get_setting_pppoe (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingPPPOE *) nm_connection_get_setting (connection, NM_TYPE_SETTING_PPPOE);
}

/**
 * nm_connection_get_setting_serial:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingSerial the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingSerial if the connection contains one, otherwise NULL
 **/
NMSettingSerial *
nm_connection_get_setting_serial (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingSerial *) nm_connection_get_setting (connection, NM_TYPE_SETTING_SERIAL);
}

/**
 * nm_connection_get_setting_vpn:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingVPN the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingVPN if the connection contains one, otherwise NULL
 **/
NMSettingVPN *
nm_connection_get_setting_vpn (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingVPN *) nm_connection_get_setting (connection, NM_TYPE_SETTING_VPN);
}

/**
 * nm_connection_get_setting_wimax:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingWimax the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingWimax if the connection contains one, otherwise NULL
 **/
NMSettingWimax *
nm_connection_get_setting_wimax (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingWimax *) nm_connection_get_setting (connection, NM_TYPE_SETTING_WIMAX);
}

/**
 * nm_connection_get_setting_wired:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingWired the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingWired if the connection contains one, otherwise NULL
 **/
NMSettingWired *
nm_connection_get_setting_wired (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingWired *) nm_connection_get_setting (connection, NM_TYPE_SETTING_WIRED);
}

/**
 * nm_connection_get_setting_adsl:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingAdsl the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingAdsl if the connection contains one, otherwise NULL
 **/
NMSettingAdsl *
nm_connection_get_setting_adsl (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingAdsl *) nm_connection_get_setting (connection, NM_TYPE_SETTING_ADSL);
}

/**
 * nm_connection_get_setting_wireless:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingWireless the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingWireless if the connection contains one, otherwise NULL
 **/
NMSettingWireless *
nm_connection_get_setting_wireless (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingWireless *) nm_connection_get_setting (connection, NM_TYPE_SETTING_WIRELESS);
}

/**
 * nm_connection_get_setting_wireless_security:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingWirelessSecurity the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingWirelessSecurity if the connection contains one, otherwise NULL
 **/
NMSettingWirelessSecurity *
nm_connection_get_setting_wireless_security (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingWirelessSecurity *) nm_connection_get_setting (connection, NM_TYPE_SETTING_WIRELESS_SECURITY);
}

/**
 * nm_connection_get_setting_bridge_port:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingBridgePort the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingBridgePort if the connection contains one, otherwise NULL
 **/
NMSettingBridgePort *
nm_connection_get_setting_bridge_port (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingBridgePort *) nm_connection_get_setting (connection, NM_TYPE_SETTING_BRIDGE_PORT);
}

/**
 * nm_connection_get_setting_vlan:
 * @connection: the #NMConnection
 *
 * A shortcut to return any #NMSettingVlan the connection might contain.
 *
 * Returns: (transfer none): an #NMSettingVlan if the connection contains one, otherwise NULL
 **/
NMSettingVlan *
nm_connection_get_setting_vlan (NMConnection *connection)
{
	g_return_val_if_fail (NM_IS_CONNECTION (connection), NULL);

	return (NMSettingVlan *) nm_connection_get_setting (connection, NM_TYPE_SETTING_VLAN);
}

/*************************************************************/

static void
nm_connection_init (NMConnection *connection)
{
	NMConnectionPrivate *priv = NM_CONNECTION_GET_PRIVATE (connection);

	priv->settings = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_object_unref);
}

static void
finalize (GObject *object)
{
	NMConnection *connection = NM_CONNECTION (object);
	NMConnectionPrivate *priv = NM_CONNECTION_GET_PRIVATE (connection);

	g_hash_table_destroy (priv->settings);
	priv->settings = NULL;

	g_free (priv->path);
	priv->path = NULL;

	G_OBJECT_CLASS (nm_connection_parent_class)->finalize (object);
}

static void
set_property (GObject *object, guint prop_id,
		    const GValue *value, GParamSpec *pspec)
{
	NMConnection *connection = NM_CONNECTION (object);

	switch (prop_id) {
	case PROP_PATH:
		nm_connection_set_path (connection, g_value_get_string (value));
		break;
	default:
		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
		break;
	}
}

static void
get_property (GObject *object, guint prop_id,
		    GValue *value, GParamSpec *pspec)
{
	NMConnection *connection = NM_CONNECTION (object);

	switch (prop_id) {
	case PROP_PATH:
		g_value_set_string (value, nm_connection_get_path (connection));
		break;
	default:
		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
		break;
	}
}

static void
nm_connection_class_init (NMConnectionClass *klass)
{
	GObjectClass *object_class = G_OBJECT_CLASS (klass);

	g_type_class_add_private (klass, sizeof (NMConnectionPrivate));

	/* virtual methods */
	object_class->set_property = set_property;
	object_class->get_property = get_property;
	object_class->finalize = finalize;

	/* Properties */

	/**
	 * NMConnection:path:
	 *
	 * The connection's D-Bus path, used only by the calling process as a record
	 * of the D-Bus path of the connection as provided by a settings service.
	 **/
	g_object_class_install_property
		(object_class, PROP_PATH,
		 g_param_spec_string (NM_CONNECTION_PATH,
						  "Path",
						  "Path",
						  NULL,
						  G_PARAM_READWRITE | G_PARAM_CONSTRUCT));

	/* Signals */

	/**
	* NMConnection::secrets-updated:
	* @connection: the object on which the signal is emitted
	* @setting_name: the setting name of the #NMSetting for which secrets were
	* updated
	*
	* The ::secrets-updated signal is emitted when the secrets of a setting
	* have been changed.
	*/
	signals[SECRETS_UPDATED] =
		g_signal_new ("secrets-updated",
					  G_OBJECT_CLASS_TYPE (object_class),
					  G_SIGNAL_RUN_FIRST,
					  G_STRUCT_OFFSET (NMConnectionClass, secrets_updated),
					  NULL, NULL,
					  g_cclosure_marshal_VOID__STRING,
					  G_TYPE_NONE, 1,
					  G_TYPE_STRING);

	/**
	* NMConnection::secrets-cleared:
	* @connection: the object on which the signal is emitted
	*
	* The ::secrets-cleared signal is emitted when the secrets of a connection
	* are cleared.
	*/
	signals[SECRETS_CLEARED] =
		g_signal_new ("secrets-cleared",
		              G_OBJECT_CLASS_TYPE (object_class),
		              G_SIGNAL_RUN_FIRST,
		              0, NULL, NULL,
		              g_cclosure_marshal_VOID__VOID,
		              G_TYPE_NONE, 0);
}