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extracted sm_initiator_setup2

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matthias.ringwald@gmail.com 2015-02-27 16:53:54 +00:00
parent 3099ceee29
commit abace5deec
1 changed files with 50 additions and 41 deletions
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91
ble/sm.c
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@ -769,6 +769,7 @@ static void sm_init_setup(sm_connection_t * sm_conn){
hci_le_advertisement_address(&setup->sm_s_addr_type, &setup->sm_s_address);
setup->sm_m_addr_type = sm_conn->sm_peer_addr_type;
memcpy(setup->sm_m_address, sm_conn->sm_peer_address, 6);
setup->sm_s_pres.io_capability = sm_io_capabilities;
setup->sm_s_pres.oob_data_flag = have_oob_data;
setup->sm_s_pres.auth_req = sm_auth_req;
@ -778,10 +779,12 @@ static void sm_init_setup(sm_connection_t * sm_conn){
hci_le_advertisement_address(&setup->sm_m_addr_type, &setup->sm_m_address);
setup->sm_s_addr_type = sm_conn->sm_peer_addr_type;
memcpy(setup->sm_s_address, sm_conn->sm_peer_address, 6);
setup->sm_m_preq.io_capability = sm_io_capabilities;
setup->sm_m_preq.oob_data_flag = have_oob_data;
setup->sm_m_preq.auth_req = sm_auth_req;
setup->sm_m_preq.max_encryption_key_size = sm_max_encryption_key_size;
setup->sm_m_preq.initiator_key_distribution = 0x07;
setup->sm_m_preq.responder_key_distribution = 0x07;
}
@ -795,6 +798,52 @@ static void sm_initiator_setup(sm_connection_t * sm_conn){
sm_conn->sm_engine_state = SM_INITIATOR_PH1_SEND_PAIRING_REQUEST;
}
void sm_initiator_setup2(sm_connection_t * sm_conn){
// executed after pairing response was received
// identical to sm_responder_setup, just other encryption size field
// check key size
sm_conn->sm_actual_encryption_key_size = sm_calc_actual_encryption_key_size(setup->sm_s_pres.max_encryption_key_size);
if (sm_conn->sm_actual_encryption_key_size == 0){
setup->sm_pairing_failed_reason = SM_REASON_ENCRYPTION_KEY_SIZE;
sm_conn->sm_engine_state = SM_GENERAL_SEND_PAIRING_FAILED;
return;
}
// setup key distribution
sm_setup_key_distribution(setup->sm_s_pres.initiator_key_distribution);
// identical to responder
// start SM timeout
sm_timeout_start(sm_conn);
// decide on STK generation method
sm_setup_tk();
log_info("SMP: generation method %u", setup->sm_stk_generation_method);
// check if STK generation method is acceptable by client
if (!sm_validate_stk_generation_method()){
setup->sm_pairing_failed_reason = SM_REASON_AUTHENTHICATION_REQUIREMENTS;
sm_conn->sm_engine_state = SM_GENERAL_SEND_PAIRING_FAILED;
return;
}
// JUST WORKS doens't provide authentication
sm_conn->sm_connection_authenticated = setup->sm_stk_generation_method == JUST_WORKS ? 0 : 1;
// generate random number first, if we need to show passkey
if (setup->sm_stk_generation_method == PK_RESP_INPUT){
sm_conn->sm_engine_state = SM_PH2_GET_RANDOM_TK;
return;
}
sm_trigger_user_response(sm_conn);
sm_conn->sm_engine_state = SM_PH1_W4_USER_RESPONSE;
}
static void sm_responder_setup(sm_connection_t * sm_conn){
// start setup in responder role
@ -1752,47 +1801,7 @@ static void sm_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pac
// store pairing request
memcpy(&setup->sm_s_pres, packet, sizeof(sm_pairing_packet_t));
// identical to responder, just other encryption size field
// check key size
sm_conn->sm_actual_encryption_key_size = sm_calc_actual_encryption_key_size(setup->sm_s_pres.max_encryption_key_size);
if (sm_conn->sm_actual_encryption_key_size == 0){
setup->sm_pairing_failed_reason = SM_REASON_ENCRYPTION_KEY_SIZE;
sm_conn->sm_engine_state = SM_GENERAL_SEND_PAIRING_FAILED;
break;
}
// setup key distribution
sm_setup_key_distribution(setup->sm_s_pres.initiator_key_distribution);
// identical to responder
// start SM timeout
sm_timeout_start(sm_conn);
// decide on STK generation method
sm_setup_tk();
log_info("SMP: generation method %u", setup->sm_stk_generation_method);
// check if STK generation method is acceptable by client
if (!sm_validate_stk_generation_method()){
setup->sm_pairing_failed_reason = SM_REASON_AUTHENTHICATION_REQUIREMENTS;
sm_conn->sm_engine_state = SM_GENERAL_SEND_PAIRING_FAILED;
break;
}
// JUST WORKS doens't provide authentication
sm_conn->sm_connection_authenticated = setup->sm_stk_generation_method == JUST_WORKS ? 0 : 1;
// generate random number first, if we need to show passkey
if (setup->sm_stk_generation_method == PK_RESP_INPUT){
sm_conn->sm_engine_state = SM_PH2_GET_RANDOM_TK;
break;
}
sm_trigger_user_response(sm_conn);
sm_conn->sm_engine_state = SM_PH1_W4_USER_RESPONSE;
sm_initiator_setup2(sm_conn);
break;
case SM_INITIATOR_PH2_W4_PAIRING_CONFIRM: