mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-04-09 21:45:54 +00:00
Code Issues Packages Projects Releases Wiki Activity

gatt_client: drop notifications/indications as Central until re-encrypted

Browse Source
This commit is contained in:
Matthias Ringwald 2020-10-21 13:45:17 +02:00
parent 7e65711b3f
commit c90e270f6c
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/ble/gatt_client.c
View File

@ -710,15 +710,33 @@ static uint8_t * setup_long_characteristic_value_packet(uint8_t type, hci_con_ha
#endif
}
// test if notification/indication should be delivered to application (BLESA)
static bool gatt_client_accept_server_message(hci_con_handle_t con_handle){
#ifdef ENABLE_LE_CENTRAL_AUTO_ENCRYPTION
// only check as Central
if (gap_get_role(con_handle) == HCI_ROLE_SLAVE) return true;
// ignore messages until re-encryption as central is complete
if (gap_reconnect_security_setup_active(con_handle)) return false;
// after that ignore if bonded but not encrypted
return !gap_bonded(con_handle) || (gap_encryption_key_size(con_handle) > 0);
#else
return true;
#endif
}
// @note assume that value is part of an l2cap buffer - overwrite parts of the HCI/L2CAP/ATT packet (4/4/3) bytes
static void report_gatt_notification(hci_con_handle_t con_handle, uint16_t value_handle, uint8_t * value, int length){
if (!gatt_client_accept_server_message(con_handle)) return;
uint8_t * packet = setup_characteristic_value_packet(GATT_EVENT_NOTIFICATION, con_handle, value_handle, value, length);
emit_event_to_registered_listeners(con_handle, value_handle, packet, characteristic_value_event_header_size + length);
}
// @note assume that value is part of an l2cap buffer - overwrite parts of the HCI/L2CAP/ATT packet (4/4/3) bytes
static void report_gatt_indication(hci_con_handle_t con_handle, uint16_t value_handle, uint8_t * value, int length){
if (!gatt_client_accept_server_message(con_handle)) return;
uint8_t * packet = setup_characteristic_value_packet(GATT_EVENT_INDICATION, con_handle, value_handle, value, length);
emit_event_to_registered_listeners(con_handle, value_handle, packet, characteristic_value_event_header_size + length);
}