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Bluetooth: audio: Add security requirements check

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The LE Audio related profiles define specific security requirements that
client have to met to gain access to related characteristics. This
introduces internal wrapper API for GATT characteristics and CCC
descriptors to ensure the security.

Signed-off-by: Mariusz Skamra <mariusz.skamra@codecoup.pl>
This commit is contained in:
Mariusz Skamra 2022-07-25 09:56:23 +02:00 • committed by Carles Cufí
commit e0d36beb72
21 changed files with 646 additions and 573 deletions
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27
subsys/bluetooth/audio/has.c
View file

@ -18,6 +18,7 @@
#include "../bluetooth/host/conn_internal.h"
#include "../bluetooth/host/hci_core.h"
#include "audio_internal.h"
#include "has_internal.h"
#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_HAS)
@ -71,21 +72,25 @@ static ssize_t read_features(struct bt_conn *conn, const struct bt_gatt_attr *at
/* Hearing Access Service GATT Attributes */
BT_GATT_SERVICE_DEFINE(has_svc,
BT_GATT_PRIMARY_SERVICE(BT_UUID_HAS),
BT_GATT_CHARACTERISTIC(BT_UUID_HAS_HEARING_AID_FEATURES, BT_GATT_CHRC_READ,
BT_GATT_PERM_READ_ENCRYPT, read_features, NULL, NULL),
BT_AUDIO_CHRC(BT_UUID_HAS_HEARING_AID_FEATURES,
BT_GATT_CHRC_READ,
BT_GATT_PERM_READ_ENCRYPT,
read_features, NULL, NULL),
#if defined(CONFIG_BT_HAS_PRESET_SUPPORT)
BT_GATT_CHARACTERISTIC(BT_UUID_HAS_PRESET_CONTROL_POINT,
BT_AUDIO_CHRC(BT_UUID_HAS_PRESET_CONTROL_POINT,
#if defined(CONFIG_BT_EATT)
BT_GATT_CHRC_WRITE | BT_GATT_CHRC_INDICATE | BT_GATT_CHRC_NOTIFY,
BT_GATT_CHRC_WRITE | BT_GATT_CHRC_INDICATE | BT_GATT_CHRC_NOTIFY,
#else
BT_GATT_CHRC_WRITE | BT_GATT_CHRC_INDICATE,
BT_GATT_CHRC_WRITE | BT_GATT_CHRC_INDICATE,
#endif /* CONFIG_BT_EATT */
BT_GATT_PERM_WRITE_ENCRYPT, NULL, write_control_point, NULL),
BT_GATT_CCC(ccc_cfg_changed, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE_ENCRYPT),
BT_GATT_CHARACTERISTIC(BT_UUID_HAS_ACTIVE_PRESET_INDEX,
BT_GATT_CHRC_READ | BT_GATT_CHRC_NOTIFY, BT_GATT_PERM_READ_ENCRYPT,
read_active_preset_index, NULL, NULL),
BT_GATT_CCC(ccc_cfg_changed, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE_ENCRYPT),
BT_GATT_PERM_WRITE_ENCRYPT,
NULL, write_control_point, NULL),
BT_AUDIO_CCC(ccc_cfg_changed),
BT_AUDIO_CHRC(BT_UUID_HAS_ACTIVE_PRESET_INDEX,
BT_GATT_CHRC_READ | BT_GATT_CHRC_NOTIFY,
BT_GATT_PERM_READ_ENCRYPT,
read_active_preset_index, NULL, NULL),
BT_AUDIO_CCC(ccc_cfg_changed),
#endif /* CONFIG_BT_HAS_PRESET_SUPPORT */
);