NMSetting

NMSetting — Describes related configuration information

Synopsis

#include <nm-setting.h>

enum                NMSettingError;
#define             NM_TYPE_SETTING_ERROR
#define             NM_SETTING_ERROR
GQuark              nm_setting_error_quark              (void);
#define             NM_SETTING_PARAM_SERIALIZE
#define             NM_SETTING_PARAM_REQUIRED
#define             NM_SETTING_PARAM_SECRET
#define             NM_SETTING_PARAM_FUZZY_IGNORE
#define             NM_SETTING_NAME
enum                NMSettingSecretFlags;
                    NMSetting;
                    NMSettingClass;
void                (*NMSettingValueIterFn)             (NMSetting *setting,
                                                         const char *key,
                                                         const GValue *value,
                                                         GParamFlags flags,
                                                         gpointer user_data);
GType               nm_setting_get_type                 (void);
enum                NMSettingHashFlags;
GHashTable *        nm_setting_to_hash                  (NMSetting *setting,
                                                         NMSettingHashFlags flags);
NMSetting *         nm_setting_new_from_hash            (GType setting_type,
                                                         GHashTable *hash);
NMSetting *         nm_setting_duplicate                (NMSetting *setting);
const char *        nm_setting_get_name                 (NMSetting *setting);
gboolean            nm_setting_verify                   (NMSetting *setting,
                                                         GSList *all_settings,
                                                         GError **error);
enum                NMSettingCompareFlags;
gboolean            nm_setting_compare                  (NMSetting *a,
                                                         NMSetting *b,
                                                         NMSettingCompareFlags flags);
enum                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);
void                nm_setting_clear_secrets            (NMSetting *setting);
GPtrArray *         nm_setting_need_secrets             (NMSetting *setting);
gboolean            nm_setting_update_secrets           (NMSetting *setting,
                                                         GHashTable *secrets,
                                                         GError **error);
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);

Object Hierarchy

  GEnum
   +----NMSettingError
  GObject
   +----NMSetting
         +----NMSetting8021x
         +----NMSettingBluetooth
         +----NMSettingCdma
         +----NMSettingConnection
         +----NMSettingGsm
         +----NMSettingIP4Config
         +----NMSettingIP6Config
         +----NMSettingOlpcMesh
         +----NMSettingPPP
         +----NMSettingPPPOE
         +----NMSettingSerial
         +----NMSettingVPN
         +----NMSettingWimax
         +----NMSettingWired
         +----NMSettingWireless
         +----NMSettingWirelessSecurity

Properties

  "name"                     gchar*                : Read / Write

Description

Each NMSetting contains properties that describe configuration that applies to a specific network layer (like IPv4 or IPv6 configuration) or device type (like Ethernet, or WiFi). A collection of individual settings together make up an NMConnection. Each property is strongly typed and usually has a number of allowed values. See each NMSetting subclass for a description of properties and allowed values.

Details

enum NMSettingError

typedef enum
{
	NM_SETTING_ERROR_UNKNOWN = 0,
	NM_SETTING_ERROR_PROPERTY_NOT_FOUND,
	NM_SETTING_ERROR_PROPERTY_NOT_SECRET,
	NM_SETTING_ERROR_PROPERTY_TYPE_MISMATCH
} NMSettingError;

Describes errors that may result from operations involving a NMSetting.

NM_SETTING_ERROR_UNKNOWN

unknown or unclassified error

NM_SETTING_ERROR_PROPERTY_NOT_FOUND

a property required by the operation was not found; for example, an attempt to update an invalid secret

NM_SETTING_ERROR_PROPERTY_NOT_SECRET

an operation which requires a secret was attempted on a non-secret property

NM_SETTING_ERROR_PROPERTY_TYPE_MISMATCH

the operation requires a property of a specific type, or the value couldn't be transformed to the same type as the property being acted upon

NM_TYPE_SETTING_ERROR

#define NM_TYPE_SETTING_ERROR (nm_setting_error_get_type ()) 


NM_SETTING_ERROR

#define NM_SETTING_ERROR nm_setting_error_quark ()


nm_setting_error_quark ()

GQuark              nm_setting_error_quark              (void);

Registers an error quark for NMSetting if necessary.

Returns :

the error quark used for NMSetting errors.

NM_SETTING_PARAM_SERIALIZE

#define NM_SETTING_PARAM_SERIALIZE    (1 << (0 + G_PARAM_USER_SHIFT))


NM_SETTING_PARAM_REQUIRED

#define NM_SETTING_PARAM_REQUIRED     (1 << (1 + G_PARAM_USER_SHIFT))


NM_SETTING_PARAM_SECRET

#define NM_SETTING_PARAM_SECRET       (1 << (2 + G_PARAM_USER_SHIFT))


NM_SETTING_PARAM_FUZZY_IGNORE

#define NM_SETTING_PARAM_FUZZY_IGNORE (1 << (3 + G_PARAM_USER_SHIFT))


NM_SETTING_NAME

#define NM_SETTING_NAME "name"


enum NMSettingSecretFlags

typedef enum {
	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-setting-private.h as well */
} NMSettingSecretFlags;

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.

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

NMSetting

typedef struct _NMSetting NMSetting;

The NMSetting struct contains only private data. It should only be accessed through the functions described below.


NMSettingClass

typedef struct {
	GObjectClass parent;

	/* Virtual functions */
	gboolean    (*verify)            (NMSetting  *setting,
	                                  GSList     *all_settings,
	                                  GError     **error);

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

	gboolean    (*update_one_secret) (NMSetting  *setting,
	                                  const char *key,
	                                  GValue     *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);

	/* Padding for future expansion */
	void (*_reserved1) (void);
	void (*_reserved2) (void);
	void (*_reserved3) (void);
	void (*_reserved4) (void);
} NMSettingClass;


NMSettingValueIterFn ()

void                (*NMSettingValueIterFn)             (NMSetting *setting,
                                                         const char *key,
                                                         const GValue *value,
                                                         GParamFlags flags,
                                                         gpointer user_data);


nm_setting_get_type ()

GType               nm_setting_get_type                 (void);


enum NMSettingHashFlags

typedef enum {
	NM_SETTING_HASH_FLAG_ALL = 0x00000000,
	NM_SETTING_HASH_FLAG_NO_SECRETS = 0x00000001,
	NM_SETTING_HASH_FLAG_ONLY_SECRETS = 0x00000002,
} NMSettingHashFlags;

These flags determine which properties are added to the resulting hash when calling nm_setting_to_hash().

NM_SETTING_HASH_FLAG_ALL

hash all properties (including secrets)

NM_SETTING_HASH_FLAG_NO_SECRETS

do not include secrets

NM_SETTING_HASH_FLAG_ONLY_SECRETS

only hash secrets

nm_setting_to_hash ()

GHashTable *        nm_setting_to_hash                  (NMSetting *setting,
                                                         NMSettingHashFlags flags);

Converts the NMSetting into a GHashTable mapping each setting property name to a GValue describing that property, suitable for marshalling over D-Bus or serializing. The mapping is string to GValue.

setting :

the NMSetting

flags :

hash flags, e.g. NM_SETTING_HASH_FLAG_ALL

Returns :

a new GHashTable describing the setting's properties. [transfer full][element-type utf8 GObject.Value]

nm_setting_new_from_hash ()

NMSetting *         nm_setting_new_from_hash            (GType setting_type,
                                                         GHashTable *hash);

Creates a new NMSetting object and populates that object with the properties contained in the hash table, using each hash key as the property to set, and each hash value as the value to set that property to. Setting properties are strongly typed, thus the GValue type of the hash value must be correct. See the documentation on each NMSetting object subclass for the correct property names and value types.

setting_type :

the NMSetting type which the hash contains properties for

hash :

the GHashTable containing a string to GValue mapping of properties that apply to the setting. [element-type utf8 GObject.Value]

Returns :

a new NMSetting object populated with the properties from the hash table, or NULL on failure

nm_setting_duplicate ()

NMSetting *         nm_setting_duplicate                (NMSetting *setting);

Duplicates a NMSetting.

setting :

the NMSetting to duplicate

Returns :

a new NMSetting containing the same properties and values as the source NMSetting. [transfer full]

nm_setting_get_name ()

const char *        nm_setting_get_name                 (NMSetting *setting);

Returns the type name of the NMSetting object

setting :

the NMSetting

Returns :

a string containing the type name of the NMSetting object, like 'ppp' or 'wireless' or 'wired'.

nm_setting_verify ()

gboolean            nm_setting_verify                   (NMSetting *setting,
                                                         GSList *all_settings,
                                                         GError **error);

Validates the setting. Each setting's properties have allowed values, and some are dependent on other values (hence the need for all_settings). The returned GError contains information about which property of the setting failed validation, and in what way that property failed validation.

setting :

the NMSetting to verify

all_settings :

a GSList of all settings in the connection from which setting came

error :

location to store error, or NULL

Returns :

TRUE if the setting is valid, FALSE if it is not

enum NMSettingCompareFlags

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
} NMSettingCompareFlags;

These flags modify the comparison behavior when comparing two settings or two connections.

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 secrets

nm_setting_compare ()

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

Compares two NMSetting objects for similarity, with comparison behavior modified by a set of flags. See the documentation for NMSettingCompareFlags for a description of each flag's behavior.

a :

a NMSetting

b :

a second NMSetting to compare with the first

flags :

compare flags, e.g. NM_SETTING_COMPARE_FLAG_EXACT

Returns :

TRUE if the comparison succeeds, FALSE if it does not

enum NMSettingDiffResult

typedef enum {
	NM_SETTING_DIFF_RESULT_UNKNOWN = 0x00000000,
	NM_SETTING_DIFF_RESULT_IN_A =    0x00000001,
	NM_SETTING_DIFF_RESULT_IN_B =    0x00000002,
} NMSettingDiffResult;

These values indicate the result of a setting difference operation.

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 ()

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

Compares two NMSetting objects for similarity, with comparison behavior modified by a set of flags. See the documentation for NMSettingCompareFlags for a description of each flag's behavior. If the settings differ, the keys of each setting that differ from the other are added to results, mapped to one or more NMSettingDiffResult values.

a :

a NMSetting

b :

a second NMSetting to compare with the first

flags :

compare flags, e.g. NM_SETTING_COMPARE_FLAG_EXACT

invert_results :

this parameter is used internally by libnm-util and should be set to FALSE. If TRUE inverts the meaning of the NMSettingDiffResult.

results :

if the settings differ, on return a hash table mapping the differing keys to one or more NMSettingDiffResult values OR-ed together. If the settings do not differ, any hash table passed in is unmodified. If no hash table is passed in and the settings differ, a new one is created and returned. [inout][transfer full][element-type utf8 guint32]

Returns :

TRUE if the settings contain the same values, FALSE if they do not

nm_setting_enumerate_values ()

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

Iterates over each property of the NMSetting object, calling the supplied user function for each property.

setting :

the NMSetting

func :

user-supplied function called for each property of the setting. [scope call]

user_data :

user data passed to func at each invocation

nm_setting_to_string ()

char *              nm_setting_to_string                (NMSetting *setting);

Convert the setting into a string. For debugging purposes ONLY, should NOT be used for serialization of the setting, or machine-parsed in any way. The output format is not guaranteed to be stable and may change at any time.

setting :

the NMSetting

Returns :

an allocated string containing a textual representation of the setting's properties and values (including secrets!), which the caller should free with g_free()

nm_setting_clear_secrets ()

void                nm_setting_clear_secrets            (NMSetting *setting);

Resets and clears any secrets in the setting. Secrets should be added to the setting only when needed, and cleared immediately after use to prevent leakage of information.

setting :

the NMSetting

nm_setting_need_secrets ()

GPtrArray *         nm_setting_need_secrets             (NMSetting *setting);

Returns an array of property names for each secret which may be required to make a successful connection. The returned hints are only intended as a guide to what secrets may be required, because in some circumstances, there is no way to conclusively determine exactly which secrets are needed.

setting :

the NMSetting

Returns :

a GPtrArray containing the property names of secrets of the NMSetting which may be required; the caller owns the array and must free the each array element with g_free(), as well as the array itself with g_ptr_array_free(). [transfer full][element-type utf8]

nm_setting_update_secrets ()

gboolean            nm_setting_update_secrets           (NMSetting *setting,
                                                         GHashTable *secrets,
                                                         GError **error);

Update the setting's secrets, given a hash table of secrets intended for that setting (deserialized from D-Bus for example).

setting :

the NMSetting

secrets :

a GHashTable mapping string to GValue of setting property names and secrets. [element-type utf8 GObject.Value]

error :

location to store error, or NULL

Returns :

TRUE if the secrets were successfully updated and the connection is valid, FALSE on failure or if the setting was never added to the connection

nm_setting_get_secret_flags ()

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

For a given secret, retrieves the NMSettingSecretFlags describing how to handle that secret.

setting :

the NMSetting

secret_name :

the secret key name to get flags for

out_flags :

on success, the NMSettingSecretFlags for the secret

error :

location to store error, or NULL

Returns :

TRUE on success (if the given secret name was a valid property of this setting, and if that property is secret), FALSE if not

nm_setting_set_secret_flags ()

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

For a given secret, retrieves the NMSettingSecretFlags describing how to handle that secret.

setting :

the NMSetting

secret_name :

the secret key name to set flags for

flags :

the NMSettingSecretFlags for the secret

error :

location to store error, or NULL

Returns :

TRUE on success (if the given secret name was a valid property of this setting, and if that property is secret), FALSE if not

Property Details

The "name" property

  "name"                     gchar*                : Read / Write

The setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example 'ppp' or 'wireless' or 'wired'.

Default value: NULL