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

/*
 * 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.
 *
 * Copyright 2007 - 2011 Red Hat, Inc.
 * Copyright 2007 - 2008 Novell, Inc.
 */

#ifndef __NM_SETTING_H__
#define __NM_SETTING_H__

#if !defined (__NETWORKMANAGER_H_INSIDE__) && !defined (NETWORKMANAGER_COMPILATION)
#error "Only <NetworkManager.h> can be included directly."
#endif

#include <nm-core-types.h>

G_BEGIN_DECLS

#define NM_TYPE_SETTING            (nm_setting_get_type ())
#define NM_SETTING(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_SETTING, NMSetting))
#define NM_SETTING_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_SETTING, NMSettingClass))
#define NM_IS_SETTING(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_SETTING))
#define NM_IS_SETTING_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_SETTING))
#define NM_SETTING_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_SETTING, NMSettingClass))

/* The property of the #NMSetting is required for the setting to be valid */
#define NM_SETTING_PARAM_REQUIRED     (1 << (1 + G_PARAM_USER_SHIFT))

/* The property of the #NMSetting is a secret */
#define NM_SETTING_PARAM_SECRET       (1 << (2 + G_PARAM_USER_SHIFT))

/* The property of the #NMSetting should be ignored during comparisons that
 * use the %NM_SETTING_COMPARE_FLAG_FUZZY flag.
 */
#define NM_SETTING_PARAM_FUZZY_IGNORE (1 << (3 + G_PARAM_USER_SHIFT))

/* Note: all non-glib GParamFlags bits are reserved by NetworkManager */


#define NM_SETTING_NAME "name"

/**
 * NMSettingSecretFlags:
 * @NM_SETTING_SECRET_FLAG_NONE: the system is responsible for providing and
 * storing this secret (default)
 * @NM_SETTING_SECRET_FLAG_AGENT_OWNED: a user secret agent is responsible
 * for providing and storing this secret; when it is required agents will be
 * asked to retrieve it
 * @NM_SETTING_SECRET_FLAG_NOT_SAVED: this secret should not be saved, but
 * should be requested from the user each time it is needed
 * @NM_SETTING_SECRET_FLAG_NOT_REQUIRED: in situations where it cannot be
 * automatically determined that the secret is required (some VPNs and PPP
 * providers dont require all secrets) this flag indicates that the specific
 * secret is not required
 *
 * These flags indicate specific behavior related to handling of a secret.  Each
 * secret has a corresponding set of these flags which indicate how the secret
 * is to be stored and/or requested when it is needed.
 *
 **/
typedef enum { /*< flags >*/
	NM_SETTING_SECRET_FLAG_NONE         = 0x00000000,
	NM_SETTING_SECRET_FLAG_AGENT_OWNED  = 0x00000001,
	NM_SETTING_SECRET_FLAG_NOT_SAVED    = 0x00000002,
	NM_SETTING_SECRET_FLAG_NOT_REQUIRED = 0x00000004

	/* NOTE: if adding flags, update nm-core-internal.h as well */
} NMSettingSecretFlags;

/**
 * NMSettingCompareFlags:
 * @NM_SETTING_COMPARE_FLAG_EXACT: match all properties exactly
 * @NM_SETTING_COMPARE_FLAG_FUZZY: match only important attributes, like SSID,
 *   type, security settings, etc.  Does not match, for example, connection ID
 *   or UUID.
 * @NM_SETTING_COMPARE_FLAG_IGNORE_ID: ignore the connection's ID
 * @NM_SETTING_COMPARE_FLAG_IGNORE_SECRETS: ignore all secrets
 * @NM_SETTING_COMPARE_FLAG_IGNORE_AGENT_OWNED_SECRETS: ignore secrets for which
 *   the secret's flags indicate the secret is owned by a user secret agent
 *   (ie, the secret's flag includes @NM_SETTING_SECRET_FLAG_AGENT_OWNED)
 * @NM_SETTING_COMPARE_FLAG_IGNORE_NOT_SAVED_SECRETS: ignore secrets for which
 *   the secret's flags indicate the secret should not be saved to persistent
 *   storage (ie, the secret's flag includes @NM_SETTING_SECRET_FLAG_NOT_SAVED)
 * @NM_SETTING_COMPARE_FLAG_DIFF_RESULT_WITH_DEFAULT: if this flag is set,
 *   nm_setting_diff() and nm_connection_diff() will also include properties that
 *   are set to their default value. See also @NM_SETTING_COMPARE_FLAG_DIFF_RESULT_NO_DEFAULT.
 * @NM_SETTING_COMPARE_FLAG_DIFF_RESULT_NO_DEFAULT: if this flag is set,
 *   nm_setting_diff() and nm_connection_diff() will not include properties that
 *   are set to their default value. This is the opposite of
 *   @NM_SETTING_COMPARE_FLAG_DIFF_RESULT_WITH_DEFAULT. If both flags are set together,
 *   @NM_SETTING_COMPARE_FLAG_DIFF_RESULT_WITH_DEFAULT wins. If both flags are unset,
 *   this means to exclude default properties if there is a setting to compare,
 *   but include all properties, if the setting 'b' is missing. This is the legacy
 *   behaviour of libnm-util, where nm_setting_diff() behaved differently depending
 *   on whether the setting 'b' was available. If @NM_SETTING_COMPARE_FLAG_DIFF_RESULT_WITH_DEFAULT
 *   is set, nm_setting_diff() will also set the flags @NM_SETTING_DIFF_RESULT_IN_A_DEFAULT
 *   and @NM_SETTING_DIFF_RESULT_IN_B_DEFAULT, if the values are default values.
 * @NM_SETTING_COMPARE_FLAG_IGNORE_TIMESTAMP: ignore the connection's timestamp
 *
 * These flags modify the comparison behavior when comparing two settings or
 * two connections.
 *
 **/
typedef enum {
	NM_SETTING_COMPARE_FLAG_EXACT = 0x00000000,
	NM_SETTING_COMPARE_FLAG_FUZZY = 0x00000001,
	NM_SETTING_COMPARE_FLAG_IGNORE_ID = 0x00000002,
	NM_SETTING_COMPARE_FLAG_IGNORE_SECRETS = 0x00000004,
	NM_SETTING_COMPARE_FLAG_IGNORE_AGENT_OWNED_SECRETS = 0x00000008,
	NM_SETTING_COMPARE_FLAG_IGNORE_NOT_SAVED_SECRETS = 0x00000010,
	NM_SETTING_COMPARE_FLAG_DIFF_RESULT_WITH_DEFAULT = 0x00000020,
	NM_SETTING_COMPARE_FLAG_DIFF_RESULT_NO_DEFAULT = 0x00000040,
	NM_SETTING_COMPARE_FLAG_IGNORE_TIMESTAMP = 0x00000080,

	/* Higher flags like 0x80000000 and 0x40000000 are used internally as private flags */
} NMSettingCompareFlags;


/**
 * NMSettingMacRandomization:
 * @NM_SETTING_MAC_RANDOMIZATION_DEFAULT: the default value, which unless
 * overridden by user-controlled defaults configuration, is "never".
 * @NM_SETTING_MAC_RANDOMIZATION_NEVER: the device's MAC address is always used.
 * @NM_SETTING_MAC_RANDOMIZATION_ALWAYS: a random MAC address is used.
 *
 * Controls if and how the MAC address of a device is randomzied.
 **/
typedef enum {
	NM_SETTING_MAC_RANDOMIZATION_DEFAULT = 0,
	NM_SETTING_MAC_RANDOMIZATION_NEVER,
	NM_SETTING_MAC_RANDOMIZATION_ALWAYS,
} NMSettingMacRandomization;


/**
 * NMSetting:
 *
 * The NMSetting struct contains only private data.
 * It should only be accessed through the functions described below.
 */
struct _NMSetting {
	GObject parent;
};


/**
 * NMSettingClearSecretsWithFlagsFn:
 * @setting: The setting for which secrets are being iterated
 * @secret: The secret's name
 * @flags: The secret's flags, eg %NM_SETTING_SECRET_FLAG_AGENT_OWNED
 * @user_data: User data passed to nm_connection_clear_secrets_with_flags()
 *
 * Returns: %TRUE to clear the secret, %FALSE to not clear the secret
 */
typedef gboolean (*NMSettingClearSecretsWithFlagsFn) (NMSetting *setting,
                                                      const char *secret,
                                                      NMSettingSecretFlags flags,
                                                      gpointer user_data);

typedef struct {
	GObjectClass parent;

	/* Virtual functions */
	gint        (*verify)            (NMSetting     *setting,
	                                  NMConnection  *connection,
	                                  GError       **error);

	gboolean    (*verify_secrets)    (NMSetting     *setting,
	                                  NMConnection  *connection,
	                                  GError       **error);

	GPtrArray  *(*need_secrets)      (NMSetting  *setting);

	int         (*update_one_secret) (NMSetting  *setting,
	                                  const char *key,
	                                  GVariant   *value,
	                                  GError    **error);

	gboolean    (*get_secret_flags)  (NMSetting  *setting,
	                                  const char *secret_name,
	                                  gboolean verify_secret,
	                                  NMSettingSecretFlags *out_flags,
	                                  GError **error);

	gboolean    (*set_secret_flags)  (NMSetting  *setting,
	                                  const char *secret_name,
	                                  gboolean verify_secret,
	                                  NMSettingSecretFlags flags,
	                                  GError **error);

	gboolean    (*clear_secrets_with_flags) (NMSetting *setting,
	                                         GParamSpec *pspec,
	                                         NMSettingClearSecretsWithFlagsFn func,
	                                         gpointer user_data);

	/* Returns TRUE if the given property contains the same value in both settings */
	gboolean    (*compare_property)  (NMSetting *setting,
	                                  NMSetting *other,
	                                  const GParamSpec *prop_spec,
	                                  NMSettingCompareFlags flags);

	/*< private >*/
	gpointer padding[7];
} NMSettingClass;

/**
 * NMSettingValueIterFn:
 * @setting: The setting for which properties are being iterated, given to
 * nm_setting_enumerate_values()
 * @key: The value/property name
 * @value: The property's value
 * @flags: The property's flags, like %NM_SETTING_PARAM_SECRET
 * @user_data: User data passed to nm_setting_enumerate_values()
 */
typedef void (*NMSettingValueIterFn) (NMSetting *setting,
                                      const char *key,
                                      const GValue *value,
                                      GParamFlags flags,
                                      gpointer user_data);


GType nm_setting_get_type (void);

GType nm_setting_lookup_type (const char *name);

NMSetting *nm_setting_duplicate      (NMSetting *setting);

const char *nm_setting_get_name      (NMSetting *setting);

gboolean    nm_setting_verify        (NMSetting     *setting,
                                      NMConnection  *connection,
                                      GError       **error);

NM_AVAILABLE_IN_1_2
gboolean    nm_setting_verify_secrets (NMSetting     *setting,
                                       NMConnection  *connection,
                                       GError       **error);

gboolean    nm_setting_compare       (NMSetting *a,
                                      NMSetting *b,
                                      NMSettingCompareFlags flags);

/**
 * NMSettingDiffResult:
 * @NM_SETTING_DIFF_RESULT_UNKNOWN: unknown result
 * @NM_SETTING_DIFF_RESULT_IN_A: the property is present in setting A
 * @NM_SETTING_DIFF_RESULT_IN_B: the property is present in setting B
 * @NM_SETTING_DIFF_RESULT_IN_A_DEFAULT: the property is present in
 * setting A but is set to the default value. This flag is only set,
 * if you specify @NM_SETTING_COMPARE_FLAG_DIFF_RESULT_WITH_DEFAULT.
 * @NM_SETTING_DIFF_RESULT_IN_B_DEFAULT: analog to @NM_SETTING_DIFF_RESULT_IN_A_DEFAULT.
 *
 * These values indicate the result of a setting difference operation.
 **/
typedef enum {
	NM_SETTING_DIFF_RESULT_UNKNOWN = 0x00000000,
	NM_SETTING_DIFF_RESULT_IN_A =    0x00000001,
	NM_SETTING_DIFF_RESULT_IN_B =    0x00000002,
	NM_SETTING_DIFF_RESULT_IN_A_DEFAULT = 0x00000004,
	NM_SETTING_DIFF_RESULT_IN_B_DEFAULT = 0x00000004,
} NMSettingDiffResult;

gboolean    nm_setting_diff          (NMSetting *a,
                                      NMSetting *b,
                                      NMSettingCompareFlags flags,
                                      gboolean invert_results,
                                      GHashTable **results);

void        nm_setting_enumerate_values (NMSetting *setting,
                                         NMSettingValueIterFn func,
                                         gpointer user_data);

char       *nm_setting_to_string      (NMSetting *setting);

/* Secrets */
gboolean    nm_setting_get_secret_flags (NMSetting *setting,
                                         const char *secret_name,
                                         NMSettingSecretFlags *out_flags,
                                         GError **error);

gboolean    nm_setting_set_secret_flags (NMSetting *setting,
                                         const char *secret_name,
                                         NMSettingSecretFlags flags,
                                         GError **error);

/* Properties */
const GVariantType *nm_setting_get_dbus_property_type (NMSetting *setting,
                                                       const char *property_name);

G_END_DECLS

#endif /* __NM_SETTING_H__ */