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

#include "nm-default.h"

#include "nm-dhcp-config.h"

#include "nm-dhcp4-config.h"
#include "nm-dhcp6-config.h"
#include "nm-dbus-interface.h"
#include "nm-object-private.h"
#include "nm-utils.h"

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

NM_GOBJECT_PROPERTIES_DEFINE (NMDhcpConfig,
	PROP_FAMILY,
	PROP_OPTIONS,
);

typedef struct _NMDhcpConfigPrivate {
	GHashTable *options;
} NMDhcpConfigPrivate;

G_DEFINE_ABSTRACT_TYPE (NMDhcpConfig, nm_dhcp_config, NM_TYPE_OBJECT)

#define NM_DHCP_CONFIG_GET_PRIVATE(self) _NM_GET_PRIVATE_PTR(self, NMDhcpConfig, NM_IS_DHCP_CONFIG, NMObject)

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

static NMLDBusNotifyUpdatePropFlags
_notify_update_prop_options (NMClient *client,
                             NMLDBusObject *dbobj,
                             const NMLDBusMetaIface *meta_iface,
                             guint dbus_property_idx,
                             GVariant *value)
{
	NMDhcpConfig *self = NM_DHCP_CONFIG (dbobj->nmobj);
	NMDhcpConfigPrivate *priv = NM_DHCP_CONFIG_GET_PRIVATE (self);

	g_hash_table_remove_all (priv->options);

	if (value) {
		GVariantIter iter;
		const char *key;
		GVariant *opt;

		g_variant_iter_init (&iter, value);
		while (g_variant_iter_next (&iter, "{&sv}", &key, &opt)) {
			if (g_variant_is_of_type (opt, G_VARIANT_TYPE_STRING))
				g_hash_table_insert (priv->options, g_strdup (key), g_variant_dup_string (opt, NULL));
			g_variant_unref (opt);
		}
	}

	return NML_DBUS_NOTIFY_UPDATE_PROP_FLAGS_NOTIFY;
}

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

static void
nm_dhcp_config_init (NMDhcpConfig *self)
{
	NMDhcpConfigPrivate *priv;

	priv = G_TYPE_INSTANCE_GET_PRIVATE (self, NM_TYPE_DHCP_CONFIG, NMDhcpConfigPrivate);

	self->_priv = priv;

	priv->options = g_hash_table_new_full (nm_str_hash, g_str_equal, g_free, g_free);
}

static void
finalize (GObject *object)
{
	NMDhcpConfigPrivate *priv = NM_DHCP_CONFIG_GET_PRIVATE (object);

	g_hash_table_destroy (priv->options);

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

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

	switch (prop_id) {
	case PROP_FAMILY:
		g_value_set_int (value, nm_dhcp_config_get_family (self));
		break;
	case PROP_OPTIONS:
		g_value_set_boxed (value, nm_dhcp_config_get_options (self));
		break;
	default:
		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
		break;
	}
}

const NMLDBusMetaIface _nml_dbus_meta_iface_nm_dhcp4config = NML_DBUS_META_IFACE_INIT_PROP (
	NM_DBUS_INTERFACE_DHCP4_CONFIG,
	nm_dhcp4_config_get_type,
	NML_DBUS_META_INTERFACE_PRIO_INSTANTIATE_HIGH,
	NML_DBUS_META_IFACE_DBUS_PROPERTIES (
		NML_DBUS_META_PROPERTY_INIT_FCN ("Options", PROP_OPTIONS, "a{sv}", _notify_update_prop_options ),
	),
	.base_struct_offset = G_STRUCT_OFFSET (NMDhcpConfig, _priv),
);

const NMLDBusMetaIface _nml_dbus_meta_iface_nm_dhcp6config = NML_DBUS_META_IFACE_INIT_PROP (
	NM_DBUS_INTERFACE_DHCP6_CONFIG,
	nm_dhcp6_config_get_type,
	NML_DBUS_META_INTERFACE_PRIO_INSTANTIATE_HIGH,
	NML_DBUS_META_IFACE_DBUS_PROPERTIES (
		NML_DBUS_META_PROPERTY_INIT_FCN ("Options", PROP_OPTIONS, "a{sv}", _notify_update_prop_options ),
	),
	.base_struct_offset = G_STRUCT_OFFSET (NMDhcpConfig, _priv),
);

static void
nm_dhcp_config_class_init (NMDhcpConfigClass *config_class)
{
	GObjectClass *object_class = G_OBJECT_CLASS (config_class);

	g_type_class_add_private (config_class, sizeof (NMDhcpConfigPrivate));

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

	/**
	 * NMDhcpConfig: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_DHCP_CONFIG_FAMILY, "", "",
	                      0, 255, AF_UNSPEC,
	                      G_PARAM_READABLE |
	                      G_PARAM_STATIC_STRINGS);

	/**
	 * NMDhcpConfig:options: (type GHashTable(utf8,utf8)):
	 *
	 * The #GHashTable containing options of the configuration.
	 **/
	obj_properties[PROP_OPTIONS] =
	    g_param_spec_boxed (NM_DHCP_CONFIG_OPTIONS, "", "",
	                        G_TYPE_HASH_TABLE,
	                        G_PARAM_READABLE |
	                        G_PARAM_STATIC_STRINGS);

	_nml_dbus_meta_class_init_with_properties (object_class, &_nml_dbus_meta_iface_nm_dhcp4config,
	                                                         &_nml_dbus_meta_iface_nm_dhcp6config);
}

/**
 * nm_dhcp_config_get_family:
 * @config: a #NMDhcpConfig
 *
 * Gets the IP address family of the configuration
 *
 * Returns: the IP address family; either <literal>AF_INET</literal> or
 *   <literal>AF_INET6</literal>
 **/
int
nm_dhcp_config_get_family (NMDhcpConfig *config)
{
	g_return_val_if_fail (NM_IS_DHCP_CONFIG (config), AF_UNSPEC);

	return NM_IS_DHCP4_CONFIG (config) ? AF_INET : AF_INET6;
}

/**
 * nm_dhcp_config_get_options:
 * @config: a #NMDhcpConfig
 *
 * Gets all the options contained in the configuration.
 *
 * Returns: (transfer none) (element-type utf8 utf8): the #GHashTable containing
 * strings for keys and values.  This is the internal copy used by the
 * configuration, and must not be modified.
 **/
GHashTable *
nm_dhcp_config_get_options (NMDhcpConfig *config)
{
	g_return_val_if_fail (NM_IS_DHCP_CONFIG (config), NULL);

	return NM_DHCP_CONFIG_GET_PRIVATE (config)->options;
}

/**
 * nm_dhcp_config_get_one_option:
 * @config: a #NMDhcpConfig
 * @option: the option to retrieve
 *
 * Gets one option by option name.
 *
 * Returns: the configuration option's value. This is the internal string used by the
 * configuration, and must not be modified.
 **/
const char *
nm_dhcp_config_get_one_option (NMDhcpConfig *config, const char *option)
{
	g_return_val_if_fail (NM_IS_DHCP_CONFIG (config), NULL);

	return g_hash_table_lookup (nm_dhcp_config_get_options (config), option);
}
