keyring class

DBusKeyring data structure. More...

Functions
DBusKeyring *	_dbus_keyring_ref (DBusKeyring *keyring)
	Increments reference count of the keyring.
void	_dbus_keyring_unref (DBusKeyring *keyring)
	Decrements refcount and finalizes if it reaches zero.
DBusKeyring *	_dbus_keyring_new_for_credentials (DBusCredentials *credentials, const DBusString *context, DBusError *error)
	Creates a new keyring that lives in the ~/.dbus-keyrings directory of the user represented by credentials.
dbus_bool_t	_dbus_keyring_validate_context (const DBusString *context)
	Checks whether the context is a valid context.
int	_dbus_keyring_get_best_key (DBusKeyring *keyring, DBusError *error)
	Gets a recent key to use for authentication.
dbus_bool_t	_dbus_keyring_is_for_credentials (DBusKeyring *keyring, DBusCredentials *credentials)
	Checks whether the keyring is for the same user as the given credentials.
dbus_bool_t	_dbus_keyring_get_hex_key (DBusKeyring *keyring, int key_id, DBusString *hex_key)
	Gets the hex-encoded secret key for the given ID.

Detailed Description

DBusKeyring data structure.

Types and functions related to DBusKeyring. DBusKeyring is intended to manage cookies used to authenticate clients to servers. This is essentially the "verify that client can read the user's homedir" authentication mechanism. Both client and server must have access to the homedir.

The secret keys are not kept in locked memory, and are written to a file in the user's homedir. However they are transient (only used by a single server instance for a fixed period of time, then discarded). Also, the keys are not sent over the wire.

Function Documentation

_dbus_keyring_get_best_key()

int _dbus_keyring_get_best_key	(	DBusKeyring *	keyring,
		DBusError *	error
	)

Gets a recent key to use for authentication.

If no recent key exists, creates one. Returns the key ID. If a key can't be written to the keyring file so no recent key can be created, returns -1. All valid keys are > 0.

Parameters

keyring	the keyring
error	error on failure

Returns

key ID to use for auth, or -1 on failure

Definition at line 934 of file dbus-keyring.c.

References DBUS_ERROR_FAILED, dbus_set_error_const(), DBusKey::id, and TRUE.

_dbus_keyring_get_hex_key()

dbus_bool_t _dbus_keyring_get_hex_key	(	DBusKeyring *	keyring,
		int	key_id,
		DBusString *	hex_key
	)

Gets the hex-encoded secret key for the given ID.

Returns FALSE if not enough memory. Returns TRUE but empty key on any other error such as unknown key ID.

Parameters

keyring	the keyring
key_id	the key ID
hex_key	string to append hex-encoded key to

Returns

TRUE if we had enough memory

Definition at line 992 of file dbus-keyring.c.

References _dbus_string_get_length(), _dbus_string_hex_encode(), keys, n_keys, NULL, DBusKey::secret, and TRUE.

_dbus_keyring_is_for_credentials()

dbus_bool_t _dbus_keyring_is_for_credentials	(	DBusKeyring *	keyring,
		DBusCredentials *	credentials
	)

Checks whether the keyring is for the same user as the given credentials.

Parameters

keyring	the keyring
credentials	the credentials to check

Returns

TRUE if the keyring belongs to the given user

Definition at line 973 of file dbus-keyring.c.

References _dbus_credentials_same_user(), and credentials.

_dbus_keyring_new_for_credentials()

DBusKeyring * _dbus_keyring_new_for_credentials	(	DBusCredentials *	credentials,
		const DBusString *	context,
		DBusError *	error
	)

Creates a new keyring that lives in the ~/.dbus-keyrings directory of the user represented by credentials.

If the credentials are NULL or empty, uses those of the current process.

Parameters

credentials	a set of credentials representing a user or NULL
context	which keyring to get
error	return location for errors

Returns

the keyring or NULL on error

Definition at line 693 of file dbus-keyring.c.

References _dbus_append_keyring_directory_for_credentials(), _dbus_assert, _dbus_check_setuid(), _dbus_concat_dir_and_file(), _dbus_credentials_add_from_current_process(), _dbus_credentials_are_anonymous(), _dbus_credentials_copy(), _dbus_credentials_new_from_current_process(), _dbus_credentials_unref(), _dbus_ensure_directory(), _dbus_keyring_unref(), _dbus_keyring_validate_context(), _dbus_string_append(), _dbus_string_copy(), _dbus_string_free(), _dbus_string_init(), credentials, DBUS_ERROR_FAILED, dbus_error_free(), dbus_error_init(), DBUS_ERROR_NO_MEMORY, DBUS_ERROR_NOT_SUPPORTED, dbus_set_error(), dbus_set_error_const(), directory, FALSE, filename, filename_lock, DBusError::message, NULL, and TRUE.

_dbus_keyring_ref()

DBusKeyring * _dbus_keyring_ref

(

DBusKeyring *

keyring

)

Increments reference count of the keyring.

Parameters

keyring

the keyring

Returns

the keyring

Definition at line 651 of file dbus-keyring.c.

References refcount.

_dbus_keyring_unref()

void _dbus_keyring_unref

(

DBusKeyring *

keyring

)

Decrements refcount and finalizes if it reaches zero.

Parameters

keyring

the keyring

Definition at line 665 of file dbus-keyring.c.

References _dbus_credentials_unref(), _dbus_string_free(), credentials, dbus_free(), directory, filename, filename_lock, keys, n_keys, and refcount.

Referenced by _dbus_auth_unref(), and _dbus_keyring_new_for_credentials().

_dbus_keyring_validate_context()

dbus_bool_t _dbus_keyring_validate_context

(

const DBusString *

context

)

Checks whether the context is a valid context.

Contexts that might cause confusion when used in filenames are not allowed (contexts can't start with a dot or contain dir separators).

Parameters

context

the context

Returns

TRUE if valid

Definition at line 837 of file dbus-keyring.c.

References _dbus_string_find(), _dbus_string_find_blank(), _dbus_string_get_length(), _dbus_string_validate_ascii(), FALSE, NULL, and TRUE.

Referenced by _dbus_keyring_new_for_credentials().