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store role and peer address in connection, only send slave request security if we're slave

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matthias.ringwald 2014-06-12 22:09:14 +00:00
parent d4eb9144ae
commit d90eba5c0c
1 changed files with 27 additions and 20 deletions
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39
ble/sm.c
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@ -288,8 +288,11 @@ typedef struct sm_setup_context {
// connection info available as long as connection exists
typedef struct sm_connection {
uint16_t sm_handle;
uint8_t sm_role; // 0 - IamMaster, 1 = IamSlave
bd_addr_t sm_peer_address;
uint8_t sm_peer_addr_type;
security_manager_state_t sm_state_responding;
csrk_lookup_state_t sm_m_csrk_lookup_state;
csrk_lookup_state_t sm_csrk_lookup_state;
uint8_t sm_connection_encrypted;
uint8_t sm_connection_authenticated; // [0..1]
uint8_t sm_actual_encryption_key_size;
@ -793,9 +796,9 @@ static void sm_run(void){
sm_key_t plaintext;
// CSRK lookup
if (connection->sm_m_csrk_lookup_state == CSRK_LOOKUP_W4_READY && !sm_central_device_lookup_active()){
sm_central_device_start_lookup(setup->sm_m_addr_type, setup->sm_m_address);
connection->sm_m_csrk_lookup_state = CSRK_LOOKUP_STARTED;
if (connection->sm_csrk_lookup_state == CSRK_LOOKUP_W4_READY && !sm_central_device_lookup_active()){
sm_central_device_start_lookup(connection->sm_peer_addr_type, connection->sm_peer_address);
connection->sm_csrk_lookup_state = CSRK_LOOKUP_STARTED;
}
// distributed key generation
@ -1400,30 +1403,34 @@ static void sm_event_packet_handler (uint8_t packet_type, uint16_t channel, uint
}
connection->sm_handle = READ_BT_16(packet, 4);
setup->sm_m_addr_type = packet[7];
bt_flip_addr(setup->sm_m_address, &packet[8]);
connection->sm_role = packet[6];
connection->sm_peer_addr_type = packet[7];
bt_flip_addr(connection->sm_peer_address, &packet[8]);
sm_reset_tk();
hci_le_advertisement_address(&setup->sm_s_addr_type, &setup->sm_s_address);
printf("Incoming connection, own address %s\n", bd_addr_to_str(setup->sm_s_address));
printf("New connection, role %s\n", connection->sm_role ? "slave" : "master");
// reset security properties
connection->sm_connection_encrypted = 0;
connection->sm_connection_authenticated = 0;
connection->sm_connection_authorization_state = AUTHORIZATION_UNKNOWN;
// request security
if (sm_slave_request_security){
// fill in sm setup
sm_reset_tk();
hci_le_advertisement_address(&setup->sm_s_addr_type, &setup->sm_s_address);
setup->sm_m_addr_type = packet[7];
bt_flip_addr(setup->sm_m_address, &packet[8]);
// request security if we're slave and requested by app
if (connection->sm_role == 0x01 && sm_slave_request_security){
connection->sm_state_responding = SM_STATE_SEND_SECURITY_REQUEST;
}
connection->sm_m_csrk_lookup_state = CSRK_LOOKUP_W4_READY;
// prepare CSRK lookup
connection->sm_csrk_lookup_state = CSRK_LOOKUP_W4_READY;
if (!sm_central_device_lookup_active()){
// try to lookup device
sm_central_device_start_lookup(setup->sm_m_addr_type, setup->sm_m_address);
connection->sm_m_csrk_lookup_state = CSRK_LOOKUP_STARTED;
sm_central_device_start_lookup(connection->sm_peer_addr_type, connection->sm_peer_address);
connection->sm_csrk_lookup_state = CSRK_LOOKUP_STARTED;
}
break;