/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2007 - 2011 Novell, Inc.
 * Copyright (C) 2008 - 2014 Red Hat, Inc.
 */

#include "libnm/nm-default-libnm.h"

#include "nm-ip-config.h"

#include "nm-ip4-config.h"
#include "nm-ip6-config.h"
#include "nm-setting-ip-config.h"
#include "nm-dbus-interface.h"
#include "nm-object-private.h"
#include "nm-utils.h"
#include "nm-core-internal.h"

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

NM_GOBJECT_PROPERTIES_DEFINE(NMIPConfig,
                             PROP_FAMILY,
                             PROP_GATEWAY,
                             PROP_ADDRESSES,
                             PROP_ROUTES,
                             PROP_NAMESERVERS,
                             PROP_DOMAINS,
                             PROP_SEARCHES,
                             PROP_WINS_SERVERS, );

typedef struct _NMIPConfigPrivate {
    GPtrArray *addresses;
    GPtrArray *routes;
    char **    nameservers;
    char **    domains;
    char **    searches;
    char **    wins_servers;
    char *     gateway;

    bool addresses_new_style : 1;
    bool routes_new_style : 1;
    bool nameservers_new_style : 1;
    bool wins_servers_new_style : 1;
} NMIPConfigPrivate;

G_DEFINE_ABSTRACT_TYPE(NMIPConfig, nm_ip_config, NM_TYPE_OBJECT)

#define NM_IP_CONFIG_GET_PRIVATE(self) \
    _NM_GET_PRIVATE_PTR(self, NMIPConfig, NM_IS_IP_CONFIG, NMObject)

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

static NMLDBusNotifyUpdatePropFlags
_notify_update_prop_addresses(NMClient *              client,
                              NMLDBusObject *         dbobj,
                              const NMLDBusMetaIface *meta_iface,
                              guint                   dbus_property_idx,
                              GVariant *              value)
{
    NMIPConfig *       self                    = NM_IP_CONFIG(dbobj->nmobj);
    NMIPConfigPrivate *priv                    = NM_IP_CONFIG_GET_PRIVATE(self);
    gs_unref_ptrarray GPtrArray *addresses_old = NULL;
    gs_unref_ptrarray GPtrArray *addresses_new = NULL;
    int      addr_family = meta_iface == &_nml_dbus_meta_iface_nm_ip4config ? AF_INET : AF_INET6;
    gboolean new_style;

    new_style =
        (((const char *) meta_iface->dbus_properties[dbus_property_idx].dbus_type)[2] == '{');

    if (priv->addresses_new_style) {
        if (!new_style)
            return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NONE;
    } else
        priv->addresses_new_style = new_style;

    if (value) {
        if (new_style)
            addresses_new = nm_utils_ip_addresses_from_variant(value, addr_family);
        else if (addr_family == AF_INET)
            addresses_new = nm_utils_ip4_addresses_from_variant(value, NULL);
        else
            addresses_new = nm_utils_ip6_addresses_from_variant(value, NULL);
        nm_assert(addresses_new);
    }
    if (!addresses_new)
        addresses_new = g_ptr_array_new_with_free_func((GDestroyNotify) nm_ip_address_unref);

    addresses_old   = priv->addresses;
    priv->addresses = g_steal_pointer(&addresses_new);
    return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NOTIFY;
}

static NMLDBusNotifyUpdatePropFlags
_notify_update_prop_routes(NMClient *              client,
                           NMLDBusObject *         dbobj,
                           const NMLDBusMetaIface *meta_iface,
                           guint                   dbus_property_idx,
                           GVariant *              value)
{
    NMIPConfig *       self                 = NM_IP_CONFIG(dbobj->nmobj);
    NMIPConfigPrivate *priv                 = NM_IP_CONFIG_GET_PRIVATE(self);
    gs_unref_ptrarray GPtrArray *routes_old = NULL;
    gs_unref_ptrarray GPtrArray *routes_new = NULL;
    int      addr_family = meta_iface == &_nml_dbus_meta_iface_nm_ip4config ? AF_INET : AF_INET6;
    gboolean new_style;

    new_style =
        (((const char *) meta_iface->dbus_properties[dbus_property_idx].dbus_type)[2] == '{');

    if (priv->routes_new_style) {
        if (!new_style)
            return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NONE;
    } else
        priv->routes_new_style = new_style;

    if (value) {
        if (new_style)
            routes_new = nm_utils_ip_routes_from_variant(value, addr_family);
        else if (addr_family == AF_INET)
            routes_new = nm_utils_ip4_routes_from_variant(value);
        else
            routes_new = nm_utils_ip6_routes_from_variant(value);
        nm_assert(routes_new);
    }
    if (!routes_new)
        routes_new = g_ptr_array_new_with_free_func((GDestroyNotify) nm_ip_route_unref);

    routes_old   = priv->routes;
    priv->routes = g_steal_pointer(&routes_new);
    return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NOTIFY;
}

static NMLDBusNotifyUpdatePropFlags
_notify_update_prop_nameservers(NMClient *              client,
                                NMLDBusObject *         dbobj,
                                const NMLDBusMetaIface *meta_iface,
                                guint                   dbus_property_idx,
                                GVariant *              value)
{
    NMIPConfig *       self            = NM_IP_CONFIG(dbobj->nmobj);
    NMIPConfigPrivate *priv            = NM_IP_CONFIG_GET_PRIVATE(self);
    gs_strfreev char **nameservers_new = NULL;
    gboolean           new_style       = TRUE;
    int addr_family = meta_iface == &_nml_dbus_meta_iface_nm_ip4config ? AF_INET : AF_INET6;

    if (addr_family == AF_INET) {
        new_style =
            (((const char *) meta_iface->dbus_properties[dbus_property_idx].dbus_type)[1] == 'a');

        if (priv->nameservers_new_style) {
            if (!new_style)
                return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NONE;
        } else
            priv->nameservers_new_style = new_style;
    }

    if (value) {
        if (addr_family == AF_INET6)
            nameservers_new = nm_utils_ip6_dns_from_variant(value);
        else if (!new_style)
            nameservers_new = nm_utils_ip4_dns_from_variant(value);
        else {
            GVariantIter      iter;
            GVariantIter *    iter_v;
            gs_unref_ptrarray GPtrArray *arr = NULL;

            g_variant_iter_init(&iter, value);
            while (g_variant_iter_next(&iter, "a{sv}", &iter_v)) {
                const char *key;
                GVariant *  val;

                while (g_variant_iter_next(iter_v, "{&sv}", &key, &val)) {
                    if (nm_streq(key, "address")) {
                        gs_free char *val_str = NULL;

                        if (!g_variant_is_of_type(val, G_VARIANT_TYPE_STRING))
                            goto next;
                        if (!nm_utils_parse_inaddr(AF_INET,
                                                   g_variant_get_string(val, NULL),
                                                   &val_str))
                            goto next;
                        if (!arr)
                            arr = g_ptr_array_new();
                        g_ptr_array_add(arr, g_steal_pointer(&val_str));
                        goto next;
                    }
next:
                    g_variant_unref(val);
                }
                g_variant_iter_free(iter_v);
            }
            if (arr && arr->len > 0)
                nameservers_new = nm_utils_strv_dup((char **) arr->pdata, arr->len, FALSE);
            else
                nameservers_new = g_new0(char *, 1);
        }
        nm_assert(nameservers_new);
    }

    g_strfreev(priv->nameservers);
    priv->nameservers = g_steal_pointer(&nameservers_new);
    return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NOTIFY;
}

static NMLDBusNotifyUpdatePropFlags
_notify_update_prop_wins_servers(NMClient *              client,
                                 NMLDBusObject *         dbobj,
                                 const NMLDBusMetaIface *meta_iface,
                                 guint                   dbus_property_idx,
                                 GVariant *              value)
{
    NMIPConfig *       self             = NM_IP_CONFIG(dbobj->nmobj);
    NMIPConfigPrivate *priv             = NM_IP_CONFIG_GET_PRIVATE(self);
    gs_strfreev char **wins_servers_new = NULL;
    gboolean           new_style;

    new_style =
        (((const char *) meta_iface->dbus_properties[dbus_property_idx].dbus_type)[1] == 's');

    if (priv->wins_servers_new_style) {
        if (!new_style)
            return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NONE;
    } else
        priv->wins_servers_new_style = new_style;

    if (value) {
        if (new_style)
            wins_servers_new = g_variant_dup_strv(value, NULL);
        else
            wins_servers_new = nm_utils_ip4_dns_from_variant(value);
        nm_assert(wins_servers_new);
    }

    g_strfreev(priv->wins_servers);
    priv->wins_servers = g_steal_pointer(&wins_servers_new);
    return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NOTIFY;
}

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

static void
get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
    NMIPConfig *self = NM_IP_CONFIG(object);

    switch (prop_id) {
    case PROP_FAMILY:
        g_value_set_int(value, nm_ip_config_get_family(self));
        break;
    case PROP_GATEWAY:
        g_value_set_string(value, nm_ip_config_get_gateway(self));
        break;
    case PROP_ADDRESSES:
        g_value_take_boxed(value,
                           _nm_utils_copy_array(nm_ip_config_get_addresses(self),
                                                (NMUtilsCopyFunc) nm_ip_address_dup,
                                                (GDestroyNotify) nm_ip_address_unref));
        break;
    case PROP_ROUTES:
        g_value_take_boxed(value,
                           _nm_utils_copy_array(nm_ip_config_get_routes(self),
                                                (NMUtilsCopyFunc) nm_ip_route_dup,
                                                (GDestroyNotify) nm_ip_route_unref));
        break;
    case PROP_NAMESERVERS:
        g_value_set_boxed(value, (char **) nm_ip_config_get_nameservers(self));
        break;
    case PROP_DOMAINS:
        g_value_set_boxed(value, (char **) nm_ip_config_get_domains(self));
        break;
    case PROP_SEARCHES:
        g_value_set_boxed(value, (char **) nm_ip_config_get_searches(self));
        break;
    case PROP_WINS_SERVERS:
        g_value_set_boxed(value, (char **) nm_ip_config_get_wins_servers(self));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
        break;
    }
}

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

static void
nm_ip_config_init(NMIPConfig *self)
{
    NMIPConfigPrivate *priv;

    priv = G_TYPE_INSTANCE_GET_PRIVATE(self, NM_TYPE_IP_CONFIG, NMIPConfigPrivate);

    self->_priv = priv;

    priv->addresses = g_ptr_array_new_with_free_func((GDestroyNotify) nm_ip_address_unref);
    priv->routes    = g_ptr_array_new_with_free_func((GDestroyNotify) nm_ip_route_unref);
}

static void
finalize(GObject *object)
{
    NMIPConfigPrivate *priv = NM_IP_CONFIG_GET_PRIVATE(object);

    g_free(priv->gateway);

    g_ptr_array_unref(priv->routes);
    g_ptr_array_unref(priv->addresses);

    g_strfreev(priv->nameservers);
    g_strfreev(priv->domains);
    g_strfreev(priv->searches);
    g_strfreev(priv->wins_servers);

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

const NMLDBusMetaIface _nml_dbus_meta_iface_nm_ip4config = NML_DBUS_META_IFACE_INIT_PROP(
    NM_DBUS_INTERFACE_IP4_CONFIG,
    nm_ip4_config_get_type,
    NML_DBUS_META_INTERFACE_PRIO_INSTANTIATE_30,
    NML_DBUS_META_IFACE_DBUS_PROPERTIES(
        NML_DBUS_META_PROPERTY_INIT_FCN("AddressData",
                                        PROP_ADDRESSES,
                                        "aa{sv}",
                                        _notify_update_prop_addresses),
        NML_DBUS_META_PROPERTY_INIT_FCN("Addresses",
                                        PROP_ADDRESSES,
                                        "aau",
                                        _notify_update_prop_addresses,
                                        .obj_property_no_reverse_idx = TRUE),
        NML_DBUS_META_PROPERTY_INIT_TODO("DnsOptions", "as"),
        NML_DBUS_META_PROPERTY_INIT_TODO("DnsPriority", "i"),
        NML_DBUS_META_PROPERTY_INIT_AS("Domains", PROP_DOMAINS, NMIPConfigPrivate, domains),
        NML_DBUS_META_PROPERTY_INIT_S("Gateway", PROP_GATEWAY, NMIPConfigPrivate, gateway),
        NML_DBUS_META_PROPERTY_INIT_FCN("NameserverData",
                                        PROP_NAMESERVERS,
                                        "aa{sv}",
                                        _notify_update_prop_nameservers),
        NML_DBUS_META_PROPERTY_INIT_FCN("Nameservers",
                                        PROP_NAMESERVERS,
                                        "au",
                                        _notify_update_prop_nameservers,
                                        .obj_property_no_reverse_idx = TRUE),
        NML_DBUS_META_PROPERTY_INIT_FCN("RouteData",
                                        PROP_ROUTES,
                                        "aa{sv}",
                                        _notify_update_prop_routes),
        NML_DBUS_META_PROPERTY_INIT_FCN("Routes",
                                        PROP_ROUTES,
                                        "aau",
                                        _notify_update_prop_routes,
                                        .obj_property_no_reverse_idx = TRUE),
        NML_DBUS_META_PROPERTY_INIT_AS("Searches", PROP_SEARCHES, NMIPConfigPrivate, searches),
        NML_DBUS_META_PROPERTY_INIT_FCN("WinsServerData",
                                        PROP_WINS_SERVERS,
                                        "as",
                                        _notify_update_prop_wins_servers),
        NML_DBUS_META_PROPERTY_INIT_FCN("WinsServers",
                                        PROP_WINS_SERVERS,
                                        "au",
                                        _notify_update_prop_wins_servers,
                                        .obj_property_no_reverse_idx = TRUE), ),
    .base_struct_offset = G_STRUCT_OFFSET(NMIPConfig, _priv), );

const NMLDBusMetaIface _nml_dbus_meta_iface_nm_ip6config = NML_DBUS_META_IFACE_INIT_PROP(
    NM_DBUS_INTERFACE_IP6_CONFIG,
    nm_ip6_config_get_type,
    NML_DBUS_META_INTERFACE_PRIO_INSTANTIATE_30,
    NML_DBUS_META_IFACE_DBUS_PROPERTIES(
        NML_DBUS_META_PROPERTY_INIT_FCN("AddressData",
                                        PROP_ADDRESSES,
                                        "aa{sv}",
                                        _notify_update_prop_addresses),
        NML_DBUS_META_PROPERTY_INIT_FCN("Addresses",
                                        PROP_ADDRESSES,
                                        "a(ayuay)",
                                        _notify_update_prop_addresses,
                                        .obj_property_no_reverse_idx = TRUE),
        NML_DBUS_META_PROPERTY_INIT_TODO("DnsOptions", "as"),
        NML_DBUS_META_PROPERTY_INIT_TODO("DnsPriority", "i"),
        NML_DBUS_META_PROPERTY_INIT_AS("Domains", PROP_DOMAINS, NMIPConfigPrivate, domains),
        NML_DBUS_META_PROPERTY_INIT_S("Gateway", PROP_GATEWAY, NMIPConfigPrivate, gateway),
        NML_DBUS_META_PROPERTY_INIT_FCN("Nameservers",
                                        PROP_NAMESERVERS,
                                        "aay",
                                        _notify_update_prop_nameservers),
        NML_DBUS_META_PROPERTY_INIT_FCN("RouteData",
                                        PROP_ROUTES,
                                        "aa{sv}",
                                        _notify_update_prop_routes),
        NML_DBUS_META_PROPERTY_INIT_FCN("Routes",
                                        PROP_ROUTES,
                                        "a(ayuayu)",
                                        _notify_update_prop_routes,
                                        .obj_property_no_reverse_idx = TRUE),
        NML_DBUS_META_PROPERTY_INIT_AS("Searches", PROP_SEARCHES, NMIPConfigPrivate, searches), ),
    .base_struct_offset = G_STRUCT_OFFSET(NMIPConfig, _priv), );

static void
nm_ip_config_class_init(NMIPConfigClass *config_class)
{
    GObjectClass *object_class = G_OBJECT_CLASS(config_class);

    g_type_class_add_private(config_class, sizeof(NMIPConfigPrivate));

    object_class->get_property = get_property;
    object_class->finalize     = finalize;

    /**
     * NMIPConfig:family:
     *
     * The IP address family of the configuration; either
     * <literal>AF_INET</literal> or <literal>AF_INET6</literal>.
     **/
    obj_properties[PROP_FAMILY] = g_param_spec_int(NM_IP_CONFIG_FAMILY,
                                                   "",
                                                   "",
                                                   0,
                                                   255,
                                                   AF_UNSPEC,
                                                   G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    /**
     * NMIPConfig:gateway:
     *
     * The IP gateway address of the configuration as string.
     **/
    obj_properties[PROP_GATEWAY] = g_param_spec_string(NM_IP_CONFIG_GATEWAY,
                                                       "",
                                                       "",
                                                       NULL,
                                                       G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    /**
     * NMIPConfig:addresses:
     *
     * A #GPtrArray containing the addresses (#NMIPAddress) of the configuration.
     **/
    obj_properties[PROP_ADDRESSES] = g_param_spec_boxed(NM_IP_CONFIG_ADDRESSES,
                                                        "",
                                                        "",
                                                        G_TYPE_PTR_ARRAY,
                                                        G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    /**
     * NMIPConfig:routes: (type GPtrArray(NMIPRoute))
     *
     * A #GPtrArray containing the routes (#NMIPRoute) of the configuration.
     **/
    obj_properties[PROP_ROUTES] = g_param_spec_boxed(NM_IP_CONFIG_ROUTES,
                                                     "",
                                                     "",
                                                     G_TYPE_PTR_ARRAY,
                                                     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    /**
     * NMIPConfig:nameservers:
     *
     * The array containing name server IP addresses of the configuration.
     **/
    obj_properties[PROP_NAMESERVERS] =
        g_param_spec_boxed(NM_IP_CONFIG_NAMESERVERS,
                           "",
                           "",
                           G_TYPE_STRV,
                           G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    /**
     * NMIPConfig:domains:
     *
     * The array containing domain strings of the configuration.
     **/
    obj_properties[PROP_DOMAINS] = g_param_spec_boxed(NM_IP_CONFIG_DOMAINS,
                                                      "",
                                                      "",
                                                      G_TYPE_STRV,
                                                      G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    /**
     * NMIPConfig:searches:
     *
     * The array containing DNS search strings of the configuration.
     **/
    obj_properties[PROP_SEARCHES] = g_param_spec_boxed(NM_IP_CONFIG_SEARCHES,
                                                       "",
                                                       "",
                                                       G_TYPE_STRV,
                                                       G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    /**
     * NMIPConfig:wins-servers:
     *
     * The array containing WINS server IP addresses of the configuration.
     * (This will always be empty for IPv6 configurations.)
     **/
    obj_properties[PROP_WINS_SERVERS] =
        g_param_spec_boxed(NM_IP_CONFIG_WINS_SERVERS,
                           "",
                           "",
                           G_TYPE_STRV,
                           G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);

    _nml_dbus_meta_class_init_with_properties(object_class,
                                              &_nml_dbus_meta_iface_nm_ip4config,
                                              &_nml_dbus_meta_iface_nm_ip6config);
}

/**
 * nm_ip_config_get_family:
 * @config: a #NMIPConfig
 *
 * Gets the IP address family
 *
 * Returns: the IP address family; either <literal>AF_INET</literal> or
 * <literal>AF_INET6</literal>
 **/
int
nm_ip_config_get_family(NMIPConfig *config)
{
    g_return_val_if_fail(NM_IS_IP_CONFIG(config), AF_UNSPEC);

    return NM_IS_IP4_CONFIG(config) ? AF_INET : AF_INET6;
}

/**
 * nm_ip_config_get_gateway:
 * @config: a #NMIPConfig
 *
 * Gets the IP gateway address.
 *
 * Returns: (transfer none): the IP address of the gateway.
 **/
const char *
nm_ip_config_get_gateway(NMIPConfig *config)
{
    g_return_val_if_fail(NM_IS_IP_CONFIG(config), NULL);

    return _nml_coerce_property_str_not_empty(NM_IP_CONFIG_GET_PRIVATE(config)->gateway);
}

/**
 * nm_ip_config_get_addresses:
 * @config: a #NMIPConfig
 *
 * Gets the IP addresses (containing the address, prefix, and gateway).
 *
 * Returns: (element-type NMIPAddress) (transfer none): the #GPtrArray
 * containing #NMIPAddress<!-- -->es.  This is the internal copy used by the
 * configuration and must not be modified. The library never modifies the
 * returned array and thus it is safe for callers to reference and keep using it.
 **/
GPtrArray *
nm_ip_config_get_addresses(NMIPConfig *config)
{
    g_return_val_if_fail(NM_IS_IP_CONFIG(config), NULL);

    return NM_IP_CONFIG_GET_PRIVATE(config)->addresses;
}

/**
 * nm_ip_config_get_nameservers:
 * @config: a #NMIPConfig
 *
 * Gets the domain name servers (DNS).
 *
 * Returns: (transfer none): the array of nameserver IP addresses
 **/
const char *const *
nm_ip_config_get_nameservers(NMIPConfig *config)
{
    g_return_val_if_fail(NM_IS_IP_CONFIG(config), NULL);

    return _nml_coerce_property_strv_not_null(NM_IP_CONFIG_GET_PRIVATE(config)->nameservers);
}

/**
 * nm_ip_config_get_domains:
 * @config: a #NMIPConfig
 *
 * Gets the domain names.
 *
 * Returns: (transfer none): the array of domains.
 * (This is never %NULL, though it may be 0-length).
 **/
const char *const *
nm_ip_config_get_domains(NMIPConfig *config)
{
    g_return_val_if_fail(NM_IS_IP_CONFIG(config), NULL);

    return _nml_coerce_property_strv_not_null(NM_IP_CONFIG_GET_PRIVATE(config)->domains);
}

/**
 * nm_ip_config_get_searches:
 * @config: a #NMIPConfig
 *
 * Gets the DNS searches.
 *
 * Returns: (transfer none): the array of DNS search strings.
 * (This is never %NULL, though it may be 0-length).
 **/
const char *const *
nm_ip_config_get_searches(NMIPConfig *config)
{
    g_return_val_if_fail(NM_IS_IP_CONFIG(config), NULL);

    return _nml_coerce_property_strv_not_null(NM_IP_CONFIG_GET_PRIVATE(config)->searches);
}

/**
 * nm_ip_config_get_wins_servers:
 * @config: a #NMIPConfig
 *
 * Gets the Windows Internet Name Service servers (WINS).
 *
 * Returns: (transfer none): the arry of WINS server IP address strings.
 * (This is never %NULL, though it may be 0-length.)
 **/
const char *const *
nm_ip_config_get_wins_servers(NMIPConfig *config)
{
    g_return_val_if_fail(NM_IS_IP_CONFIG(config), NULL);

    return _nml_coerce_property_strv_not_null(NM_IP_CONFIG_GET_PRIVATE(config)->wins_servers);
}

/**
 * nm_ip_config_get_routes:
 * @config: a #NMIPConfig
 *
 * Gets the routes.
 *
 * Returns: (element-type NMIPRoute) (transfer none): the #GPtrArray containing
 * #NMIPRoute<!-- -->s. This is the internal copy used by the configuration, and must
 * not be modified. The library never modifies the returned array and thus it is
 * safe for callers to reference and keep using it.
 *
 **/
GPtrArray *
nm_ip_config_get_routes(NMIPConfig *config)
{
    g_return_val_if_fail(NM_IS_IP_CONFIG(config), NULL);

    return NM_IP_CONFIG_GET_PRIVATE(config)->routes;
}
