/****************************************************************************** * * Copyright 2003-2012 Broadcom Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************/ #define LOG_TAG "bluetooth" #include "bt_target.h" #include #include "smp_int.h" #include "osi/include/log.h" const char* const smp_state_name[] = { "SMP_STATE_IDLE", "SMP_STATE_WAIT_APP_RSP", "SMP_STATE_SEC_REQ_PENDING", "SMP_STATE_PAIR_REQ_RSP", "SMP_STATE_WAIT_CONFIRM", "SMP_STATE_CONFIRM", "SMP_STATE_RAND", "SMP_STATE_PUBLIC_KEY_EXCH", "SMP_STATE_SEC_CONN_PHS1_START", "SMP_STATE_WAIT_COMMITMENT", "SMP_STATE_WAIT_NONCE", "SMP_STATE_SEC_CONN_PHS2_START", "SMP_STATE_WAIT_DHK_CHECK", "SMP_STATE_DHK_CHECK", "SMP_STATE_ENCRYPTION_PENDING", "SMP_STATE_BOND_PENDING", "SMP_STATE_CREATE_LOCAL_SEC_CONN_OOB_DATA", "SMP_STATE_MAX"}; const char* const smp_event_name[] = {"PAIRING_REQ_EVT", "PAIRING_RSP_EVT", "CONFIRM_EVT", "RAND_EVT", "PAIRING_FAILED_EVT", "ENC_INFO_EVT", "CENTRAL_ID_EVT", "ID_INFO_EVT", "ID_ADDR_EVT", "SIGN_INFO_EVT", "SECURITY_REQ_EVT", "PAIR_PUBLIC_KEY_EVT", "PAIR_DHKEY_CHECK_EVT", "PAIR_KEYPRESS_NOTIFICATION_EVT", "PAIR_COMMITMENT_EVT", "KEY_READY_EVT", "ENCRYPTED_EVT", "L2CAP_CONN_EVT", "L2CAP_DISCONN_EVT", "API_IO_RSP_EVT", "API_SEC_GRANT_EVT", "TK_REQ_EVT", "AUTH_CMPL_EVT", "ENC_REQ_EVT", "BOND_REQ_EVT", "DISCARD_SEC_REQ_EVT", "PUBLIC_KEY_EXCHANGE_REQ_EVT", "LOCAL_PUBLIC_KEY_CRTD_EVT", "BOTH_PUBLIC_KEYS_RCVD_EVT", "SEC_CONN_DHKEY_COMPLETE_EVT", "HAVE_LOCAL_NONCE_EVT", "SEC_CONN_PHASE1_CMPLT_EVT", "SEC_CONN_CALC_NC_EVT", "SEC_CONN_DISPLAY_NC_EVT", "SEC_CONN_OK_EVT", "SEC_CONN_2_DHCK_CHECKS_PRESENT_EVT", "SEC_CONN_KEY_READY_EVT", "KEYPRESS_NOTIFICATION_EVT", "SEC_CONN_OOB_DATA_EVT", "CREATE_LOCAL_SEC_CONN_OOB_DATA_EVT", "OUT_OF_RANGE_EVT"}; const char* smp_get_event_name(tSMP_EVENT event); const char* smp_get_state_name(tSMP_STATE state); #define SMP_SM_IGNORE 0 #define SMP_NUM_ACTIONS 2 #define SMP_SME_NEXT_STATE 2 #define SMP_SM_NUM_COLS 3 typedef const uint8_t (*tSMP_SM_TBL)[SMP_SM_NUM_COLS]; enum { SMP_PROC_SEC_REQ, SMP_SEND_PAIR_REQ, SMP_SEND_PAIR_RSP, SMP_SEND_CONFIRM, SMP_SEND_PAIR_FAIL, SMP_SEND_RAND, SMP_SEND_ENC_INFO, SMP_SEND_ID_INFO, SMP_SEND_LTK_REPLY, SMP_PROC_PAIR_CMD, SMP_PROC_PAIR_FAIL, SMP_PROC_CONFIRM, SMP_PROC_RAND, SMP_PROC_ENC_INFO, SMP_PROC_CENTRAL_ID, SMP_PROC_ID_INFO, SMP_PROC_ID_ADDR, SMP_PROC_SRK_INFO, SMP_PROC_SEC_GRANT, SMP_PROC_SL_KEY, SMP_PROC_COMPARE, SMP_PROC_IO_RSP, SMP_GENERATE_COMPARE, SMP_GENERATE_CONFIRM, SMP_GENERATE_STK, SMP_KEY_DISTRIBUTE, SMP_START_ENC, SMP_PAIRING_CMPL, SMP_DECIDE_ASSO_MODEL, SMP_SEND_APP_CBACK, SMP_CHECK_AUTH_REQ, SMP_PAIR_TERMINATE, SMP_ENC_CMPL, SMP_PROC_DISCARD, SMP_CREATE_PRIVATE_KEY, SMP_USE_OOB_PRIVATE_KEY, SMP_SEND_PAIR_PUBLIC_KEY, SMP_PROCESS_PAIR_PUBLIC_KEY, SMP_HAVE_BOTH_PUBLIC_KEYS, SMP_START_SEC_CONN_PHASE1, SMP_PROCESS_LOCAL_NONCE, SMP_SEND_COMMITMENT, SMP_PROCESS_PAIRING_COMMITMENT, SMP_PROCESS_PEER_NONCE, SMP_CALCULATE_LOCAL_DHKEY_CHECK, SMP_SEND_DHKEY_CHECK, SMP_PROCESS_DHKEY_CHECK, SMP_CALCULATE_PEER_DHKEY_CHECK, SMP_MATCH_DHKEY_CHECKS, SMP_CALCULATE_NUMERIC_COMPARISON_DISPLAY_NUMBER, SMP_MOVE_TO_SEC_CONN_PHASE2, SMP_PH2_DHKEY_CHECKS_ARE_PRESENT, SMP_WAIT_FOR_BOTH_PUBLIC_KEYS, SMP_START_PASSKEY_VERIFICATION, SMP_SEND_KEYPRESS_NOTIFICATION, SMP_PROCESS_KEYPRESS_NOTIFICATION, SMP_PROCESS_SECURE_CONNECTION_OOB_DATA, SMP_SET_LOCAL_OOB_KEYS, SMP_SET_LOCAL_OOB_RAND_COMMITMENT, SMP_IDLE_TERMINATE, SMP_SM_NO_ACTION }; static const tSMP_ACT smp_sm_action[] = { smp_proc_sec_req, smp_send_pair_req, smp_send_pair_rsp, smp_send_confirm, smp_send_pair_fail, smp_send_rand, smp_send_enc_info, smp_send_id_info, smp_send_ltk_reply, smp_proc_pair_cmd, smp_proc_pair_fail, smp_proc_confirm, smp_proc_rand, smp_proc_enc_info, smp_proc_central_id, smp_proc_id_info, smp_proc_id_addr, smp_proc_srk_info, smp_proc_sec_grant, smp_proc_sl_key, smp_proc_compare, smp_process_io_response, smp_generate_compare, smp_generate_srand_mrand_confirm, smp_generate_stk, smp_key_distribution, smp_start_enc, smp_pairing_cmpl, smp_decide_association_model, smp_send_app_cback, smp_check_auth_req, smp_pair_terminate, smp_enc_cmpl, smp_proc_discard, smp_create_private_key, smp_use_oob_private_key, smp_send_pair_public_key, smp_process_pairing_public_key, smp_both_have_public_keys, smp_start_secure_connection_phase1, smp_process_local_nonce, smp_send_commitment, smp_process_pairing_commitment, smp_process_peer_nonce, smp_calculate_local_dhkey_check, smp_send_dhkey_check, smp_process_dhkey_check, smp_calculate_peer_dhkey_check, smp_match_dhkey_checks, smp_calculate_numeric_comparison_display_number, smp_move_to_secure_connections_phase2, smp_phase_2_dhkey_checks_are_present, smp_wait_for_both_public_keys, smp_start_passkey_verification, smp_send_keypress_notification, smp_process_keypress_notification, smp_process_secure_connection_oob_data, smp_set_local_oob_keys, smp_set_local_oob_random_commitment, smp_idle_terminate}; /************ SMP Central FSM State/Event Indirection Table **************/ static const uint8_t smp_central_entry_map[][SMP_STATE_MAX] = { /* state name: */ /* Idle, WaitApp Rsp, SecReq Pend, Pair ReqRsp, Wait Cfm, Confirm, Rand, PublKey Exch, SCPhs1 Strt, Wait Cmtm, Wait Nonce, SCPhs2 Strt, Wait DHKChk, DHKChk, Enc Pend, Bond Pend, CrLocSc OobData */ /* PAIR_REQ */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* PAIR_RSP */ {0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* CONFIRM */ {0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* RAND */ {0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0}, /* PAIR_FAIL */ {0, 0x81, 0, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0, 0x81, 0}, /* ENC_INFO */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0}, /* CENTRAL_ID */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0}, /* ID_INFO */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0}, /* ID_ADDR */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0}, /* SIGN_INFO */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0}, /* SEC_REQ */ {2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* PAIR_PUBLIC_KEY */ {0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* PAIR_DHKEY_CHCK */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0}, /* PAIR_KEYPR_NOTIF */ {0, 8, 0, 0, 0, 0, 0, 0, 5, 2, 0, 0, 0, 0, 0, 0, 0}, /* PAIR_COMMITM */ {0, 0, 0, 0, 0, 0, 0, 0, 6, 1, 0, 0, 0, 0, 0, 0, 0}, /* KEY_READY */ {0, 3, 0, 3, 1, 0, 2, 0, 4, 0, 0, 0, 0, 0, 1, 6, 0}, /* ENC_CMPL */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0}, /* L2C_CONN */ {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* L2C_DISC */ {3, 0x83, 0, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0}, /* IO_RSP */ {0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* SEC_GRANT */ {0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* TK_REQ */ {0, 0, 0, 2, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0}, /* AUTH_CMPL */ {4, 0x82, 0, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0}, /* ENC_REQ */ {0, 4, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0}, /* BOND_REQ */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0}, /* DISCARD_SEC_REQ */ {0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0}, /* PUBL_KEY_EXCH_REQ */ {0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* LOC_PUBL_KEY_CRTD */ {0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1}, /* BOTH_PUBL_KEYS_RCVD */ {0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* SC_DHKEY_CMPLT */ {0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, /* HAVE_LOC_NONCE */ {0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2}, /* SC_PHASE1_CMPLT */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0}, /* SC_CALC_NC */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0}, /* SC_DSPL_NC */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0}, /* SC_NC_OK */ {0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* SC_2_DHCK_CHKS_PRES */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* SC_KEY_READY */ {0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0}, /* KEYPR_NOTIF */ {0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* SC_OOB_DATA */ {0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* CR_LOC_SC_OOB_DATA */ {5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, }; static const uint8_t smp_all_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_FAIL */ {SMP_PROC_PAIR_FAIL, SMP_PAIRING_CMPL, SMP_STATE_IDLE}, /* AUTH_CMPL */ {SMP_SEND_PAIR_FAIL, SMP_PAIRING_CMPL, SMP_STATE_IDLE}, /* L2C_DISC */ {SMP_PAIR_TERMINATE, SMP_SM_NO_ACTION, SMP_STATE_IDLE}}; static const uint8_t smp_central_idle_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* L2C_CONN */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* SEC_REQ */ {SMP_PROC_SEC_REQ, SMP_SEND_APP_CBACK, SMP_STATE_WAIT_APP_RSP}, /* L2C_DISC */ {SMP_IDLE_TERMINATE, SMP_SM_NO_ACTION, SMP_STATE_IDLE}, /* AUTH_CMPL */ {SMP_PAIRING_CMPL, SMP_SM_NO_ACTION, SMP_STATE_IDLE}, /* CR_LOC_SC_OOB_DATA */ {SMP_CREATE_PRIVATE_KEY, SMP_SM_NO_ACTION, SMP_STATE_CREATE_LOCAL_SEC_CONN_OOB_DATA} }; static const uint8_t smp_central_wait_for_app_response_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* SEC_GRANT */ {SMP_PROC_SEC_GRANT, SMP_SEND_APP_CBACK, SMP_STATE_WAIT_APP_RSP}, /* IO_RSP */ {SMP_SEND_PAIR_REQ, SMP_SM_NO_ACTION, SMP_STATE_PAIR_REQ_RSP}, /* TK ready */ /* KEY_READY */ {SMP_GENERATE_CONFIRM, SMP_SM_NO_ACTION, SMP_STATE_WAIT_CONFIRM}, /* start enc mode setup */ /* ENC_REQ */ {SMP_START_ENC, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}, /* DISCARD_SEC_REQ */ {SMP_PROC_DISCARD, SMP_SM_NO_ACTION, SMP_STATE_IDLE} /* user confirms NC 'OK', i.e. phase 1 is completed */ /* SC_NC_OK */, {SMP_MOVE_TO_SEC_CONN_PHASE2, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS2_START}, /* user-provided passkey is rcvd */ /* SC_KEY_READY */ {SMP_START_PASSKEY_VERIFICATION, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, /* PAIR_KEYPR_NOTIF */ {SMP_PROCESS_KEYPRESS_NOTIFICATION, SMP_SEND_APP_CBACK, SMP_STATE_WAIT_APP_RSP}, /* KEYPR_NOTIF */ {SMP_SEND_KEYPRESS_NOTIFICATION, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* SC_OOB_DATA */ {SMP_USE_OOB_PRIVATE_KEY, SMP_SM_NO_ACTION, SMP_STATE_PUBLIC_KEY_EXCH}}; static const uint8_t smp_central_pair_request_response_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_RSP */ {SMP_PROC_PAIR_CMD, SMP_SM_NO_ACTION, SMP_STATE_PAIR_REQ_RSP}, /* TK_REQ */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* TK ready */ /* KEY_READY */ {SMP_GENERATE_CONFIRM, SMP_SM_NO_ACTION, SMP_STATE_WAIT_CONFIRM} /* PUBL_KEY_EXCH_REQ */, {SMP_CREATE_PRIVATE_KEY, SMP_SM_NO_ACTION, SMP_STATE_PUBLIC_KEY_EXCH}}; static const uint8_t smp_central_wait_for_confirm_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* KEY_READY*/ /* CONFIRM ready */ {SMP_SEND_CONFIRM, SMP_SM_NO_ACTION, SMP_STATE_CONFIRM}}; static const uint8_t smp_central_confirm_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SEND_RAND, SMP_STATE_RAND}}; static const uint8_t smp_central_rand_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* RAND */ {SMP_PROC_RAND, SMP_GENERATE_COMPARE, SMP_STATE_RAND}, /* KEY_READY */ {SMP_PROC_COMPARE, SMP_SM_NO_ACTION, SMP_STATE_RAND}, /* Compare ready */ /* ENC_REQ */ {SMP_GENERATE_STK, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}}; static const uint8_t smp_central_public_key_exchange_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* LOC_PUBL_KEY_CRTD */ {SMP_SEND_PAIR_PUBLIC_KEY, SMP_SM_NO_ACTION, SMP_STATE_PUBLIC_KEY_EXCH}, /* PAIR_PUBLIC_KEY */ {SMP_PROCESS_PAIR_PUBLIC_KEY, SMP_SM_NO_ACTION, SMP_STATE_PUBLIC_KEY_EXCH}, /* BOTH_PUBL_KEYS_RCVD */ {SMP_HAVE_BOTH_PUBLIC_KEYS, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, }; static const uint8_t smp_central_sec_conn_phs1_start_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* SC_DHKEY_CMPLT */ {SMP_START_SEC_CONN_PHASE1, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, /* HAVE_LOC_NONCE */ {SMP_PROCESS_LOCAL_NONCE, SMP_SM_NO_ACTION, SMP_STATE_WAIT_COMMITMENT}, /* TK_REQ */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* SMP_MODEL_SEC_CONN_PASSKEY_DISP model, passkey is sent up to display,*/ /* It's time to start commitment calculation */ /* KEY_READY */ {SMP_START_PASSKEY_VERIFICATION, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, /* PAIR_KEYPR_NOTIF */ {SMP_PROCESS_KEYPRESS_NOTIFICATION, SMP_SEND_APP_CBACK, SMP_STATE_SEC_CONN_PHS1_START}, /* PAIR_COMMITM */ {SMP_PROCESS_PAIRING_COMMITMENT, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, }; static const uint8_t smp_central_wait_commitment_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_COMMITM */ {SMP_PROCESS_PAIRING_COMMITMENT, SMP_SEND_RAND, SMP_STATE_WAIT_NONCE}, /* PAIR_KEYPR_NOTIF */ {SMP_PROCESS_KEYPRESS_NOTIFICATION, SMP_SEND_APP_CBACK, SMP_STATE_WAIT_COMMITMENT}, }; static const uint8_t smp_central_wait_nonce_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* peer nonce is received */ /* RAND */ {SMP_PROC_RAND, SMP_PROCESS_PEER_NONCE, SMP_STATE_SEC_CONN_PHS2_START}, /* NC model, time to calculate number for NC */ /* SC_CALC_NC */ {SMP_CALCULATE_NUMERIC_COMPARISON_DISPLAY_NUMBER, SMP_SM_NO_ACTION, SMP_STATE_WAIT_NONCE}, /* NC model, time to display calculated number for NC to the user */ /* SC_DSPL_NC */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, }; static const uint8_t smp_central_sec_conn_phs2_start_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* SC_PHASE1_CMPLT */ {SMP_CALCULATE_LOCAL_DHKEY_CHECK, SMP_SEND_DHKEY_CHECK, SMP_STATE_WAIT_DHK_CHECK}, }; static const uint8_t smp_central_wait_dhk_check_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_DHKEY_CHCK */ {SMP_PROCESS_DHKEY_CHECK, SMP_CALCULATE_PEER_DHKEY_CHECK, SMP_STATE_DHK_CHECK}, }; static const uint8_t smp_central_dhk_check_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* locally calculated peer dhkey check is ready -> compare it withs DHKey * Check * actually received from peer */ /* SC_KEY_READY */ {SMP_MATCH_DHKEY_CHECKS, SMP_SM_NO_ACTION, SMP_STATE_DHK_CHECK}, /* locally calculated peer dhkey check is ready -> calculate STK, go to * sending */ /* HCI LE Start Encryption command */ /* ENC_REQ */ {SMP_GENERATE_STK, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}, }; static const uint8_t smp_central_enc_pending_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* STK ready */ /* KEY_READY */ {SMP_START_ENC, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}, /* ENCRYPTED */ {SMP_CHECK_AUTH_REQ, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}, /* BOND_REQ */ {SMP_KEY_DISTRIBUTE, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}}; static const uint8_t smp_central_bond_pending_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* ENC_INFO */ {SMP_PROC_ENC_INFO, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* ID_INFO */ {SMP_PROC_ID_INFO, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* SIGN_INFO */ {SMP_PROC_SRK_INFO, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* CENTRAL_ID */ {SMP_PROC_CENTRAL_ID, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* ID_ADDR */ {SMP_PROC_ID_ADDR, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* KEY_READY */ /* LTK ready */ {SMP_SEND_ENC_INFO, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}}; static const uint8_t smp_central_create_local_sec_conn_oob_data[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* LOC_PUBL_KEY_CRTD */ {SMP_SET_LOCAL_OOB_KEYS, SMP_SM_NO_ACTION, SMP_STATE_CREATE_LOCAL_SEC_CONN_OOB_DATA}, /* HAVE_LOC_NONCE */ {SMP_SET_LOCAL_OOB_RAND_COMMITMENT, SMP_SM_NO_ACTION, SMP_STATE_IDLE}}; /************ SMP Peripheral FSM State/Event Indirection Table **************/ static const uint8_t smp_peripheral_entry_map[][SMP_STATE_MAX] = { /* state name: */ /* Idle, WaitApp Rsp, SecReq Pend, Pair ReqRsp, Wait Cfm, Confirm, Rand, PublKey Exch, SCPhs1 Strt, Wait Cmtm, Wait Nonce, SCPhs2 Strt, Wait DHKChk, DHKChk, Enc Pend, Bond Pend, CrLocSc OobData */ /* PAIR_REQ */ {2, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* PAIR_RSP */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* CONFIRM */ {0, 4, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* RAND */ {0, 0, 0, 0, 0, 1, 2, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0}, /* PAIR_FAIL */ {0, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0, 0}, /* ENC_INFO */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0}, /* CENTRAL_ID */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0}, /* ID_INFO */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0}, /* ID_ADDR */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0}, /* SIGN_INFO */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0}, /* SEC_REQ */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* PAIR_PUBLIC_KEY */ {0, 0, 0, 5, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* PAIR_DHKEY_CHCK */ {0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 2, 0, 0, 0}, /* PAIR_KEYPR_NOTIF */ {0, 9, 0, 0, 0, 0, 0, 0, 5, 2, 0, 0, 0, 0, 0, 0, 0}, /* PAIR_COMMITM */ {0, 8, 0, 0, 0, 0, 0, 0, 6, 1, 0, 0, 0, 0, 0, 0, 0}, /* KEY_READY */ {0, 3, 0, 3, 2, 2, 1, 0, 4, 0, 0, 0, 0, 0, 2, 1, 0}, /* ENC_CMPL */ {0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0}, /* L2C_CONN */ {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* L2C_DISC */ {0, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0}, /* IO_RSP */ {0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* SEC_GRANT */ {0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* TK_REQ */ {0, 0, 0, 2, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0}, /* AUTH_CMPL */ {0, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0}, /* ENC_REQ */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0}, /* BOND_REQ */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0}, /* DISCARD_SEC_REQ */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* PUBL_KEY_EXCH_REQ */ {0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* LOC_PUBL_KEY_CRTD */ {0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1}, /* BOTH_PUBL_KEYS_RCVD */ {0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* SC_DHKEY_CMPLT */ {0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, /* HAVE_LOC_NONCE */ {0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2}, /* SC_PHASE1_CMPLT */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0}, /* SC_CALC_NC */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0}, /* SC_DSPL_NC */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0}, /* SC_NC_OK */ {0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* SC_2_DHCK_CHKS_PRES */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0}, /* SC_KEY_READY */ {0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0}, /* KEYPR_NOTIF */ {0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* SC_OOB_DATA */ {0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* CR_LOC_SC_OOB_DATA */ {3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, }; static const uint8_t smp_peripheral_idle_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* L2C_CONN */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* PAIR_REQ */ {SMP_PROC_PAIR_CMD, SMP_SEND_APP_CBACK, SMP_STATE_WAIT_APP_RSP}, /* CR_LOC_SC_OOB_DATA */ {SMP_CREATE_PRIVATE_KEY, SMP_SM_NO_ACTION, SMP_STATE_CREATE_LOCAL_SEC_CONN_OOB_DATA}}; static const uint8_t smp_peripheral_wait_for_app_response_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* IO_RSP */ {SMP_PROC_IO_RSP, SMP_SM_NO_ACTION, SMP_STATE_PAIR_REQ_RSP}, /* SEC_GRANT */ {SMP_PROC_SEC_GRANT, SMP_SEND_APP_CBACK, SMP_STATE_WAIT_APP_RSP}, /* TK ready */ /* KEY_READY */ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SM_NO_ACTION, SMP_STATE_CONFIRM}, /* DHKey Check from central is received before phase 1 is completed - race */ /* PAIR_DHKEY_CHCK */ {SMP_PROCESS_DHKEY_CHECK, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* user confirms NC 'OK', i.e. phase 1 is completed */ /* SC_NC_OK */ {SMP_MOVE_TO_SEC_CONN_PHASE2, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS2_START}, /* user-provided passkey is rcvd */ /* SC_KEY_READY */ {SMP_START_PASSKEY_VERIFICATION, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, /* PAIR_COMMITM */ {SMP_PROCESS_PAIRING_COMMITMENT, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* PAIR_KEYPR_NOTIF */ {SMP_PROCESS_KEYPRESS_NOTIFICATION, SMP_SEND_APP_CBACK, SMP_STATE_WAIT_APP_RSP}, /* KEYPR_NOTIF */ {SMP_SEND_KEYPRESS_NOTIFICATION, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* SC_OOB_DATA */ {SMP_SEND_PAIR_RSP, SMP_SM_NO_ACTION, SMP_STATE_PAIR_REQ_RSP}, }; static const uint8_t smp_peripheral_sec_request_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_REQ */ {SMP_PROC_PAIR_CMD, SMP_SM_NO_ACTION, SMP_STATE_PAIR_REQ_RSP}, /* ENCRYPTED*/ {SMP_ENC_CMPL, SMP_SM_NO_ACTION, SMP_STATE_PAIR_REQ_RSP}, }; static const uint8_t smp_peripheral_pair_request_response_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SM_NO_ACTION, SMP_STATE_CONFIRM}, /* TK_REQ */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* TK/Confirm ready */ /* KEY_READY */ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_STATE_PAIR_REQ_RSP}, /* PUBL_KEY_EXCH_REQ */ {SMP_CREATE_PRIVATE_KEY, SMP_SM_NO_ACTION, SMP_STATE_PUBLIC_KEY_EXCH}, /* PAIR_PUBLIC_KEY */ {SMP_PROCESS_PAIR_PUBLIC_KEY, SMP_SM_NO_ACTION, SMP_STATE_PAIR_REQ_RSP}, }; static const uint8_t smp_peripheral_wait_confirm_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SEND_CONFIRM, SMP_STATE_CONFIRM}, /* KEY_READY*/ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_STATE_WAIT_CONFIRM}}; static const uint8_t smp_peripheral_confirm_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* RAND */ {SMP_PROC_RAND, SMP_GENERATE_COMPARE, SMP_STATE_RAND}, /* TK/Confirm ready */ /* KEY_READY*/ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_STATE_CONFIRM}}; static const uint8_t smp_peripheral_rand_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* KEY_READY */ {SMP_PROC_COMPARE, SMP_SM_NO_ACTION, SMP_STATE_RAND}, /* compare match */ /* RAND */ {SMP_SEND_RAND, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}}; static const uint8_t smp_peripheral_public_key_exch_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* LOC_PUBL_KEY_CRTD */ {SMP_WAIT_FOR_BOTH_PUBLIC_KEYS, SMP_SM_NO_ACTION, SMP_STATE_PUBLIC_KEY_EXCH}, /* PAIR_PUBLIC_KEY */ {SMP_PROCESS_PAIR_PUBLIC_KEY, SMP_SM_NO_ACTION, SMP_STATE_PUBLIC_KEY_EXCH}, /* BOTH_PUBL_KEYS_RCVD */ {SMP_HAVE_BOTH_PUBLIC_KEYS, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, }; static const uint8_t smp_peripheral_sec_conn_phs1_start_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* SC_DHKEY_CMPLT */ {SMP_START_SEC_CONN_PHASE1, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, /* HAVE_LOC_NONCE */ {SMP_PROCESS_LOCAL_NONCE, SMP_SM_NO_ACTION, SMP_STATE_WAIT_COMMITMENT}, /* TK_REQ */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, /* SMP_MODEL_SEC_CONN_PASSKEY_DISP model, passkey is sent up to display, * it's * time to start */ /* commitment calculation */ /* KEY_READY */ {SMP_START_PASSKEY_VERIFICATION, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, /* PAIR_KEYPR_NOTIF */ {SMP_PROCESS_KEYPRESS_NOTIFICATION, SMP_SEND_APP_CBACK, SMP_STATE_SEC_CONN_PHS1_START}, /*COMMIT*/ {SMP_PROCESS_PAIRING_COMMITMENT, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS1_START}, }; static const uint8_t smp_peripheral_wait_commitment_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_COMMITM */ {SMP_PROCESS_PAIRING_COMMITMENT, SMP_SEND_COMMITMENT, SMP_STATE_WAIT_NONCE}, /* PAIR_KEYPR_NOTIF */ {SMP_PROCESS_KEYPRESS_NOTIFICATION, SMP_SEND_APP_CBACK, SMP_STATE_WAIT_COMMITMENT}, }; static const uint8_t smp_peripheral_wait_nonce_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* peer nonce is received */ /* RAND */ {SMP_PROC_RAND, SMP_PROCESS_PEER_NONCE, SMP_STATE_SEC_CONN_PHS2_START}, /* NC model, time to calculate number for NC */ /* SC_CALC_NC */ {SMP_CALCULATE_NUMERIC_COMPARISON_DISPLAY_NUMBER, SMP_SM_NO_ACTION, SMP_STATE_WAIT_NONCE}, /* NC model, time to display calculated number for NC to the user */ /* SC_DSPL_NC */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_STATE_WAIT_APP_RSP}, }; static const uint8_t smp_peripheral_sec_conn_phs2_start_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* SC_PHASE1_CMPLT */ {SMP_CALCULATE_LOCAL_DHKEY_CHECK, SMP_PH2_DHKEY_CHECKS_ARE_PRESENT, SMP_STATE_WAIT_DHK_CHECK}, /* DHKey Check from central is received before peripheral DHKey * calculation is completed - race */ /* PAIR_DHKEY_CHCK */ {SMP_PROCESS_DHKEY_CHECK, SMP_SM_NO_ACTION, SMP_STATE_SEC_CONN_PHS2_START}, }; static const uint8_t smp_peripheral_wait_dhk_check_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_DHKEY_CHCK */ {SMP_PROCESS_DHKEY_CHECK, SMP_CALCULATE_PEER_DHKEY_CHECK, SMP_STATE_DHK_CHECK}, /* DHKey Check from central was received before peripheral came to this state */ /* SC_2_DHCK_CHKS_PRES */ {SMP_CALCULATE_PEER_DHKEY_CHECK, SMP_SM_NO_ACTION, SMP_STATE_DHK_CHECK}, }; static const uint8_t smp_peripheral_dhk_check_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* locally calculated peer dhkey check is ready -> compare it withs DHKey * Check */ /* actually received from peer */ /* SC_KEY_READY */ {SMP_MATCH_DHKEY_CHECKS, SMP_SM_NO_ACTION, SMP_STATE_DHK_CHECK}, /* dhkey checks match -> send local dhkey check to central, go to wait for * HCI LE */ /* Long Term Key Request Event */ /* PAIR_DHKEY_CHCK */ {SMP_SEND_DHKEY_CHECK, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}, }; static const uint8_t smp_peripheral_enc_pending_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* ENC_REQ */ {SMP_GENERATE_STK, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}, /* STK ready */ /* KEY_READY */ {SMP_SEND_LTK_REPLY, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}, /* ENCRYPTED */ {SMP_CHECK_AUTH_REQ, SMP_SM_NO_ACTION, SMP_STATE_ENCRYPTION_PENDING}, /* BOND_REQ */ {SMP_KEY_DISTRIBUTE, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}}; static const uint8_t smp_peripheral_bond_pending_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* LTK ready */ /* KEY_READY */ {SMP_SEND_ENC_INFO, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* rev SRK */ /* SIGN_INFO */ {SMP_PROC_SRK_INFO, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* ENC_INFO */ {SMP_PROC_ENC_INFO, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* ID_INFO */ {SMP_PROC_ID_INFO, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* CENTRAL_ID*/ {SMP_PROC_CENTRAL_ID, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING}, /* ID_ADDR */ {SMP_PROC_ID_ADDR, SMP_SM_NO_ACTION, SMP_STATE_BOND_PENDING} }; static const uint8_t smp_peripheral_create_local_sec_conn_oob_data[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* LOC_PUBL_KEY_CRTD */ {SMP_SET_LOCAL_OOB_KEYS, SMP_SM_NO_ACTION, SMP_STATE_CREATE_LOCAL_SEC_CONN_OOB_DATA}, /* HAVE_LOC_NONCE */ {SMP_SET_LOCAL_OOB_RAND_COMMITMENT, SMP_SM_NO_ACTION, SMP_STATE_IDLE}}; static const tSMP_SM_TBL smp_state_table[][2] = { /* SMP_STATE_IDLE */ {smp_central_idle_table, smp_peripheral_idle_table}, /* SMP_STATE_WAIT_APP_RSP */ {smp_central_wait_for_app_response_table, smp_peripheral_wait_for_app_response_table}, /* SMP_STATE_SEC_REQ_PENDING */ {NULL, smp_peripheral_sec_request_table}, /* SMP_STATE_PAIR_REQ_RSP */ {smp_central_pair_request_response_table, smp_peripheral_pair_request_response_table}, /* SMP_STATE_WAIT_CONFIRM */ {smp_central_wait_for_confirm_table, smp_peripheral_wait_confirm_table}, /* SMP_STATE_CONFIRM */ {smp_central_confirm_table, smp_peripheral_confirm_table}, /* SMP_STATE_RAND */ {smp_central_rand_table, smp_peripheral_rand_table}, /* SMP_STATE_PUBLIC_KEY_EXCH */ {smp_central_public_key_exchange_table, smp_peripheral_public_key_exch_table}, /* SMP_STATE_SEC_CONN_PHS1_START */ {smp_central_sec_conn_phs1_start_table, smp_peripheral_sec_conn_phs1_start_table}, /* SMP_STATE_WAIT_COMMITMENT */ {smp_central_wait_commitment_table, smp_peripheral_wait_commitment_table}, /* SMP_STATE_WAIT_NONCE */ {smp_central_wait_nonce_table, smp_peripheral_wait_nonce_table}, /* SMP_STATE_SEC_CONN_PHS2_START */ {smp_central_sec_conn_phs2_start_table, smp_peripheral_sec_conn_phs2_start_table}, /* SMP_STATE_WAIT_DHK_CHECK */ {smp_central_wait_dhk_check_table, smp_peripheral_wait_dhk_check_table}, /* SMP_STATE_DHK_CHECK */ {smp_central_dhk_check_table, smp_peripheral_dhk_check_table}, /* SMP_STATE_ENCRYPTION_PENDING */ {smp_central_enc_pending_table, smp_peripheral_enc_pending_table}, /* SMP_STATE_BOND_PENDING */ {smp_central_bond_pending_table, smp_peripheral_bond_pending_table}, /* SMP_STATE_CREATE_LOCAL_SEC_CONN_OOB_DATA */ {smp_central_create_local_sec_conn_oob_data, smp_peripheral_create_local_sec_conn_oob_data}}; typedef const uint8_t (*tSMP_ENTRY_TBL)[SMP_STATE_MAX]; static const tSMP_ENTRY_TBL smp_entry_table[] = {smp_central_entry_map, smp_peripheral_entry_map}; tSMP_CB smp_cb; #define SMP_ALL_TBL_MASK 0x80 /******************************************************************************* * Function smp_set_state * Returns None ******************************************************************************/ void smp_set_state(tSMP_STATE state) { if (state < SMP_STATE_MAX) { SMP_TRACE_DEBUG("State change: %s(%d) ==> %s(%d)", smp_get_state_name(smp_cb.state), smp_cb.state, smp_get_state_name(state), state); smp_cb.state = state; } else { SMP_TRACE_DEBUG("smp_set_state invalid state =%d", state); } } /******************************************************************************* * Function smp_get_state * Returns The smp state ******************************************************************************/ tSMP_STATE smp_get_state(void) { return smp_cb.state; } /******************************************************************************* * * Function smp_sm_event * * Description Handle events to the state machine. It looks up the entry * in the smp_entry_table array. * If it is a valid entry, it gets the state table. Set the next * state, if not NULL state. Execute the action function according * to the state table. If the state returned by action function is * not NULL state, adjust the new state to the returned state. If * (api_evt != MAX), call callback function. * * Returns void. * ******************************************************************************/ void smp_sm_event(tSMP_CB* p_cb, tSMP_EVENT event, tSMP_INT_DATA* p_data) { uint8_t curr_state = p_cb->state; tSMP_SM_TBL state_table; uint8_t action, entry, i; if (p_cb->role >= 2) { SMP_TRACE_DEBUG("Invalid role: %d", p_cb->role); android_errorWriteLog(0x534e4554, "74121126"); return; } tSMP_ENTRY_TBL entry_table = smp_entry_table[p_cb->role]; SMP_TRACE_EVENT("main smp_sm_event"); if (curr_state >= SMP_STATE_MAX) { SMP_TRACE_DEBUG("Invalid state: %d", curr_state); return; } SMP_TRACE_DEBUG("SMP Role: %s State: [%s (%d)], Event: [%s (%d)]", (p_cb->role == 0x01) ? "Peripheral" : "Central", smp_get_state_name(p_cb->state), p_cb->state, smp_get_event_name(event), event); /* look up the state table for the current state */ /* lookup entry /w event & curr_state */ /* If entry is ignore, return. * Otherwise, get state table (according to curr_state or all_state) */ if ((event <= SMP_MAX_EVT) && ((entry = entry_table[event - 1][curr_state]) != SMP_SM_IGNORE)) { if (entry & SMP_ALL_TBL_MASK) { entry &= ~SMP_ALL_TBL_MASK; state_table = smp_all_table; } else state_table = smp_state_table[curr_state][p_cb->role]; } else { SMP_TRACE_DEBUG("Ignore event [%s (%d)] in state [%s (%d)]", smp_get_event_name(event), event, smp_get_state_name(curr_state), curr_state); return; } /* Get possible next state from state table. */ smp_set_state(state_table[entry - 1][SMP_SME_NEXT_STATE]); /* If action is not ignore, clear param, exec action and get next state. * The action function may set the Param for cback. * Depending on param, call cback or free buffer. */ /* execute action */ /* execute action functions */ for (i = 0; i < SMP_NUM_ACTIONS; i++) { action = state_table[entry - 1][i]; if (action != SMP_SM_NO_ACTION) { (*smp_sm_action[action])(p_cb, p_data); } else { break; } } SMP_TRACE_DEBUG("result state = %s", smp_get_state_name(p_cb->state)); } /******************************************************************************* * Function smp_get_state_name * Returns The smp state name. ******************************************************************************/ const char* smp_get_state_name(tSMP_STATE state) { const char* p_str = smp_state_name[SMP_STATE_MAX]; if (state < SMP_STATE_MAX) { p_str = smp_state_name[state]; } return p_str; } /******************************************************************************* * Function smp_get_event_name * Returns The smp event name. ******************************************************************************/ const char* smp_get_event_name(tSMP_EVENT event) { const char* p_str = smp_event_name[SMP_MAX_EVT]; if (event <= SMP_MAX_EVT) { p_str = smp_event_name[event - 1]; } return p_str; }