// SPDX-License-Identifier: GPL-2.0+
/* NetworkManager system settings service
 *
 * Copyright (C) 2007 - 2018 Red Hat, Inc.
 * Copyright (C) 2008 Novell, Inc.
 */

#ifndef __NM_SETTINGS_PLUGIN_H__
#define __NM_SETTINGS_PLUGIN_H__

#include "nm-connection.h"

#include "nm-settings-storage.h"

typedef struct _NMSettingsPlugin NMSettingsPlugin;

typedef void (*NMSettingsPluginConnectionLoadCallback) (NMSettingsPlugin *self,
                                                        NMSettingsStorage *storage,
                                                        NMConnection *connection,
                                                        gpointer user_data);

typedef struct {
	const char *filename;
	GError *error;
	bool handled:1;
} NMSettingsPluginConnectionLoadEntry;

#define NM_TYPE_SETTINGS_PLUGIN               (nm_settings_plugin_get_type ())
#define NM_SETTINGS_PLUGIN(obj)               (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_SETTINGS_PLUGIN, NMSettingsPlugin))
#define NM_SETTINGS_PLUGIN_CLASS(klass)       (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_SETTINGS_PLUGIN, NMSettingsPluginClass))
#define NM_IS_SETTINGS_PLUGIN(obj)            (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_SETTINGS_PLUGIN))
#define NM_IS_SETTINGS_PLUGIN_CLASS(klass)    (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_SETTINGS_PLUGIN))
#define NM_SETTINGS_PLUGIN_GET_CLASS(obj)     (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_SETTINGS_PLUGIN, NMSettingsPluginClass))

#define NM_SETTINGS_PLUGIN_UNMANAGED_SPECS_CHANGED    "unmanaged-specs-changed"
#define NM_SETTINGS_PLUGIN_UNRECOGNIZED_SPECS_CHANGED "unrecognized-specs-changed"

struct _NMSettingsPlugin {
	GObject parent;
};

typedef struct {
	GObjectClass parent;

	/*
	 * Return a string list of specifications of devices which NetworkManager
	 * should not manage.  Returned list will be freed by the system settings
	 * service, and each element must be allocated using g_malloc() or its
	 * variants (g_strdup, g_strdup_printf, etc).
	 *
	 * Each string in the list must be in one of the formats recognized by
	 * nm_device_spec_match_list().
	 */
	GSList * (*get_unmanaged_specs) (NMSettingsPlugin *self);

	/*
	 * Return a string list of specifications of devices for which at least
	 * one non-NetworkManager-based configuration is defined. Returned list
	 * will be freed by the system settings service, and each element must be
	 * allocated using g_malloc() or its variants (g_strdup, g_strdup_printf,
	 * etc).
	 *
	 * Each string in the list must be in one of the formats recognized by
	 * nm_device_spec_match_list().
	 */
	GSList * (*get_unrecognized_specs) (NMSettingsPlugin *self);

	/* Requests that the plugin load/reload a set of filenames.
	 */
	void (*load_connections) (NMSettingsPlugin *self,
	                          NMSettingsPluginConnectionLoadEntry *entries,
	                          gsize n_entries,
	                          NMSettingsPluginConnectionLoadCallback callback,
	                          gpointer user_data);

	/* Requests that the plugin reload all connection files from disk,
	 * and emit signals reflecting new, changed, and removed connections.
	 */
	void (*reload_connections) (NMSettingsPlugin *self,
	                            NMSettingsPluginConnectionLoadCallback callback,
	                            gpointer user_data);

	void (*load_connections_done) (NMSettingsPlugin *self);

	gboolean (*add_connection) (NMSettingsPlugin *self,
	                            NMConnection *connection,
	                            NMSettingsStorage **out_storage,
	                            NMConnection **out_connection,
	                            GError **error);

	gboolean (*update_connection) (NMSettingsPlugin *self,
	                               NMSettingsStorage *storage,
	                               NMConnection *connection,
	                               NMSettingsStorage **out_storage,
	                               NMConnection **out_connection,
	                               GError **error);

	gboolean (*delete_connection) (NMSettingsPlugin *self,
	                               NMSettingsStorage *storage,
	                               GError **error);

	const char *plugin_name;

} NMSettingsPluginClass;

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

GType nm_settings_plugin_get_type (void);

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

#define NM_SETTINGS_STORAGE_PRINT_FMT \
	NM_HASH_OBFUSCATE_PTR_FMT"/%s"

#define NM_SETTINGS_STORAGE_PRINT_ARG(storage)  \
	NM_HASH_OBFUSCATE_PTR (storage), \
	nm_settings_plugin_get_plugin_name (nm_settings_storage_get_plugin (storage))

static inline const char *
nm_settings_plugin_get_plugin_name (NMSettingsPlugin *self)
{
	NMSettingsPluginClass *klass;

	nm_assert (NM_SETTINGS_PLUGIN (self));

	klass = NM_SETTINGS_PLUGIN_GET_CLASS (self);

	nm_assert (klass && klass->plugin_name && strlen (klass->plugin_name) > 0);

	return klass->plugin_name;
}

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

GSList *nm_settings_plugin_get_unmanaged_specs (NMSettingsPlugin *self);
GSList *nm_settings_plugin_get_unrecognized_specs (NMSettingsPlugin *self);

void nm_settings_plugin_reload_connections (NMSettingsPlugin *self,
                                            NMSettingsPluginConnectionLoadCallback callback,
                                            gpointer user_data);

NMSettingsPluginConnectionLoadEntry *nm_settings_plugin_create_connection_load_entries (const char *const*filenames,
                                                                                        gsize *out_len);

void nm_settings_plugin_load_connections (NMSettingsPlugin *self,
                                          NMSettingsPluginConnectionLoadEntry *entries,
                                          gsize n_entries,
                                          NMSettingsPluginConnectionLoadCallback callback,
                                          gpointer user_data);

void nm_settings_plugin_load_connections_done (NMSettingsPlugin *self);

gboolean nm_settings_plugin_add_connection (NMSettingsPlugin *self,
                                            NMConnection *connection,
                                            NMSettingsStorage **out_storage,
                                            NMConnection **out_connection,
                                            GError **error);

gboolean nm_settings_plugin_update_connection (NMSettingsPlugin *self,
                                               NMSettingsStorage *storage,
                                               NMConnection *connection,
                                               NMSettingsStorage **out_storage,
                                               NMConnection **out_connection,
                                               GError **error);

gboolean nm_settings_plugin_delete_connection (NMSettingsPlugin *self,
                                               NMSettingsStorage *storage,
                                               GError **error);

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

typedef NMSettingsPlugin *(*NMSettingsPluginFactoryFunc) (void);

NMSettingsPlugin *nm_settings_plugin_factory (void);

/*****************************************************************************
 * Internal API
 *****************************************************************************/

void _nm_settings_plugin_emit_signal_unmanaged_specs_changed (NMSettingsPlugin *self);

void _nm_settings_plugin_emit_signal_unrecognized_specs_changed (NMSettingsPlugin *self);

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

int nm_settings_plugin_cmp_by_priority (const NMSettingsPlugin *a,
                                        const NMSettingsPlugin *b,
                                        const GSList *plugin_list);

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

/* forward declare this function from NMSettings. It's used by the ifcfg-rh plugin,
 * but that shouldn't include all "nm-settings.h" header. */
NMSettings *nm_settings_get (void);

const char *nm_settings_get_dbus_path_for_uuid (NMSettings *self,
                                                const char *uuid);

#endif /* __NM_SETTINGS_PLUGIN_H__ */