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define HCI_CON_HANDLE_INVALID and use in sm.c. Fixes issues with con handles that are 0

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This commit is contained in:
Matthias Ringwald 2017-05-05 15:16:07 +02:00
parent 56f7db6385
commit 7149bde5b4
2 changed files with 26 additions and 18 deletions
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40
src/ble/sm.c
View File

@ -373,7 +373,7 @@ static sm_setup_context_t the_setup;
static sm_setup_context_t * setup = &the_setup;
// active connection - the one for which the_setup is used for
static uint16_t sm_active_connection = 0;
static uint16_t sm_active_connection_handle = HCI_CON_HANDLE_INVALID;
// @returns 1 if oob data is available
// stores oob data in provided 16 byte buffer if not null
@ -1162,9 +1162,9 @@ static int sm_key_distribution_all_received(sm_connection_t * sm_conn){
}
static void sm_done_for_handle(hci_con_handle_t con_handle){
if (sm_active_connection == con_handle){
if (sm_active_connection_handle == con_handle){
sm_timeout_stop();
sm_active_connection = 0;
sm_active_connection_handle = HCI_CON_HANDLE_INVALID;
log_info("sm: connection 0x%x released setup context", con_handle);
}
}
@ -2028,7 +2028,7 @@ static void sm_run(void){
// handle basic actions that don't requires the full context
hci_connections_get_iterator(&it);
while(!sm_active_connection && btstack_linked_list_iterator_has_next(&it)){
while((sm_active_connection_handle == HCI_CON_HANDLE_INVALID) && btstack_linked_list_iterator_has_next(&it)){
hci_connection_t * hci_connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it);
sm_connection_t * sm_connection = &hci_connection->sm_connection;
switch(sm_connection->sm_engine_state){
@ -2064,7 +2064,7 @@ static void sm_run(void){
// Find connections that requires setup context and make active if no other is locked
hci_connections_get_iterator(&it);
while(!sm_active_connection && btstack_linked_list_iterator_has_next(&it)){
while((sm_active_connection_handle == HCI_CON_HANDLE_INVALID) && btstack_linked_list_iterator_has_next(&it)){
hci_connection_t * hci_connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it);
sm_connection_t * sm_connection = &hci_connection->sm_connection;
// - if no connection locked and we're ready/waiting for setup context, fetch it and start
@ -2154,8 +2154,8 @@ static void sm_run(void){
break;
}
if (done){
sm_active_connection = sm_connection->sm_handle;
log_info("sm: connection 0x%04x locked setup context as %s", sm_active_connection, sm_connection->sm_role ? "responder" : "initiator");
sm_active_connection_handle = sm_connection->sm_handle;
log_info("sm: connection 0x%04x locked setup context as %s, state %u", sm_active_connection_handle, sm_connection->sm_role ? "responder" : "initiator", sm_connection->sm_engine_state);
}
}
@ -2163,16 +2163,20 @@ static void sm_run(void){
// active connection handling
//
if (sm_active_connection == 0) return;
if (sm_active_connection_handle == HCI_CON_HANDLE_INVALID) return;
// assert that we could send a SM PDU - not needed for all of the following
if (!l2cap_can_send_fixed_channel_packet_now(sm_active_connection, L2CAP_CID_SECURITY_MANAGER_PROTOCOL)) {
l2cap_request_can_send_fix_channel_now_event(sm_active_connection, L2CAP_CID_SECURITY_MANAGER_PROTOCOL);
if (!l2cap_can_send_fixed_channel_packet_now(sm_active_connection_handle, L2CAP_CID_SECURITY_MANAGER_PROTOCOL)) {
log_info("cannot send now, requesting can send now event");
l2cap_request_can_send_fix_channel_now_event(sm_active_connection_handle, L2CAP_CID_SECURITY_MANAGER_PROTOCOL);
return;
}
sm_connection_t * connection = sm_get_connection_for_handle(sm_active_connection);
if (!connection) return;
sm_connection_t * connection = sm_get_connection_for_handle(sm_active_connection_handle);
if (!connection) {
log_info("no connection for handle 0x%04x", sm_active_connection_handle);
return;
}
// send keypress notifications
if (setup->sm_keypress_notification != 0xff){
@ -2640,7 +2644,7 @@ static void sm_run(void){
}
// check again if active connection was released
if (sm_active_connection) break;
if (sm_active_connection_handle != HCI_CON_HANDLE_INVALID) break;
}
}
@ -2874,14 +2878,14 @@ static void sm_handle_random_result(uint8_t * data){
mbedtls_ecp_point_free(&P);
mbedtls_mpi_free(&d);
#endif
#ifdef USE_MICROECC_FOR_ECDH
#ifndef WICED_VERSION
// micro-ecc from WICED SDK uses its wiced_crypto_get_random by default
// micro-ecc from WICED SDK uses its wiced_crypto_get_random by default - no need to set it
uECC_set_rng(&sm_generate_f_rng);
#endif
#endif /* WICED_VERSION */
uECC_make_key(ec_q, ec_d);
#endif
#endif /* USE_MICROECC_FOR_ECDH */
ec_key_generation_state = EC_KEY_GENERATION_DONE;
log_info("Elliptic curve: d");
log_info_hexdump(ec_d,32);
@ -3777,7 +3781,7 @@ void sm_init(void){
sm_address_resolution_general_queue = NULL;
gap_random_adress_update_period = 15 * 60 * 1000L;
sm_active_connection = 0;
sm_active_connection_handle = HCI_CON_HANDLE_INVALID;
test_use_fixed_local_csrk = 0;

4
src/btstack_defines.h
View File

@ -75,6 +75,10 @@ typedef uint8_t sm_key_t[16];
// DEFINES
// hci con handles (12 bit): 0x0000..0x0fff
#define HCI_CON_HANDLE_INVALID 0xffff
#define DAEMON_EVENT_PACKET 0x05
// L2CAP data