/**@brief Function for setting security requirements of a characteristic.
*
* @param[in] level required security level.
* @param[out] p_perm Characteristic security requirements.
*
* @return encoded security level and security mode.
*/
static inline void set_security_req(security_req_t level, ble_gap_conn_sec_mode_t * p_perm)
{
BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(p_perm);
switch (level)
{
case SEC_NO_ACCESS:
BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(p_perm);
break;
case SEC_OPEN:
BLE_GAP_CONN_SEC_MODE_SET_OPEN(p_perm);
break;
case SEC_JUST_WORKS:
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(p_perm);
break;
case SEC_MITM:
BLE_GAP_CONN_SEC_MODE_SET_ENC_WITH_MITM(p_perm);
break;
case SEC_SIGNED:
BLE_GAP_CONN_SEC_MODE_SET_SIGNED_NO_MITM(p_perm);
break;
case SEC_SIGNED_MITM:
BLE_GAP_CONN_SEC_MODE_SET_SIGNED_WITH_MITM(p_perm);
break;
}
return;
}
error_t custom_add_in_characteristic(uint16_t service_handle,
ble_uuid_t *p_uuid,
uint8_t properties,
SecurityManager::SecurityMode_t requiredSecurity,
uint8_t *p_data,
uint16_t length,
uint16_t max_length,
const uint8_t *userDescriptionDescriptorValuePtr,
uint16_t userDescriptionDescriptorValueLen,
bool readAuthorization,
bool writeAuthorization,
ble_gatts_char_handles_t *p_char_handle)
{
/* Characteristic metadata */
ble_gatts_attr_md_t cccd_md;
ble_gatt_char_props_t char_props;
memcpy(&char_props, &properties, 1);
if (char_props.notify || char_props.indicate) {
/* Notification requires cccd */
memclr_( &cccd_md, sizeof(ble_gatts_attr_md_t));
cccd_md.vloc = BLE_GATTS_VLOC_STACK;
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm);
}
ble_gatts_char_md_t char_md = {0};
char_md.char_props = char_props;
char_md.p_cccd_md =
(char_props.notify || char_props.indicate) ? &cccd_md : NULL;
if ((userDescriptionDescriptorValueLen > 0) && (userDescriptionDescriptorValuePtr != NULL)) {
char_md.p_char_user_desc = const_cast<uint8_t *>(userDescriptionDescriptorValuePtr);
char_md.char_user_desc_max_size = userDescriptionDescriptorValueLen;
char_md.char_user_desc_size = userDescriptionDescriptorValueLen;
}
/* Attribute declaration */
ble_gatts_attr_md_t attr_md = {0};
attr_md.rd_auth = readAuthorization;
attr_md.wr_auth = writeAuthorization;
attr_md.vloc = BLE_GATTS_VLOC_STACK;
/* Always set variable size */
attr_md.vlen = 1;
if (char_props.read || char_props.notify || char_props.indicate) {
switch (requiredSecurity) {
case SecurityManager::SECURITY_MODE_ENCRYPTION_OPEN_LINK :
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
break;
case SecurityManager::SECURITY_MODE_ENCRYPTION_NO_MITM :
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&attr_md.read_perm);
break;
case SecurityManager::SECURITY_MODE_ENCRYPTION_WITH_MITM :
BLE_GAP_CONN_SEC_MODE_SET_ENC_WITH_MITM(&attr_md.read_perm);
break;
case SecurityManager::SECURITY_MODE_SIGNED_NO_MITM :
BLE_GAP_CONN_SEC_MODE_SET_SIGNED_NO_MITM(&attr_md.read_perm);
break;
case SecurityManager::SECURITY_MODE_SIGNED_WITH_MITM :
BLE_GAP_CONN_SEC_MODE_SET_SIGNED_WITH_MITM(&attr_md.read_perm);
break;
default:
break;
};
}
if (char_props.write || char_props.write_wo_resp) {
switch (requiredSecurity) {
case SecurityManager::SECURITY_MODE_ENCRYPTION_OPEN_LINK :
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);
break;
case SecurityManager::SECURITY_MODE_ENCRYPTION_NO_MITM :
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&attr_md.write_perm);
break;
case SecurityManager::SECURITY_MODE_ENCRYPTION_WITH_MITM :
BLE_GAP_CONN_SEC_MODE_SET_ENC_WITH_MITM(&attr_md.write_perm);
break;
case SecurityManager::SECURITY_MODE_SIGNED_NO_MITM :
BLE_GAP_CONN_SEC_MODE_SET_SIGNED_NO_MITM(&attr_md.write_perm);
break;
case SecurityManager::SECURITY_MODE_SIGNED_WITH_MITM :
BLE_GAP_CONN_SEC_MODE_SET_SIGNED_WITH_MITM(&attr_md.write_perm);
break;
default:
break;
};
}
ble_gatts_attr_t attr_char_value = {0};
attr_char_value.p_uuid = p_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len = length;
attr_char_value.max_len = max_length;
attr_char_value.p_value = p_data;
ASSERT_STATUS ( sd_ble_gatts_characteristic_add(service_handle,
&char_md,
&attr_char_value,
p_char_handle));
return ERROR_NONE;
}
