/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * 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__ */