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Diffstat (limited to 'stack/smp/smp_api.c')
| -rw-r--r-- | stack/smp/smp_api.c | 337 |
1 files changed, 337 insertions, 0 deletions
diff --git a/stack/smp/smp_api.c b/stack/smp/smp_api.c new file mode 100644 index 0000000..cfde2d4 --- /dev/null +++ b/stack/smp/smp_api.c @@ -0,0 +1,337 @@ +/****************************************************************************** + * + * Copyright (C) 2008-2012 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. + * + ******************************************************************************/ + +/****************************************************************************** + * + * This file contains the implementation of the SMP interface used by + * applications that can run over an SMP. + * + ******************************************************************************/ +#include <string.h> + +#include "bt_target.h" +#if SMP_INCLUDED == TRUE + #include "smp_int.h" + #include "smp_api.h" + #include "l2cdefs.h" + #include "l2c_int.h" + #include "btm_int.h" + #include "hcimsgs.h" + + #include "btu.h" + + +/******************************************************************************* +** +** Function SMP_Init +** +** Description This function initializes the SMP unit. +** +** Returns void +** +*******************************************************************************/ +void SMP_Init(void) +{ + + SMP_TRACE_EVENT0 ("SMP_Init"); + memset(&smp_cb, 0, sizeof(tSMP_CB)); + +#if defined(SMP_INITIAL_TRACE_LEVEL) + smp_cb.trace_level = SMP_INITIAL_TRACE_LEVEL; +#else + smp_cb.trace_level = BT_TRACE_LEVEL_NONE; /* No traces */ +#endif + + smp_l2cap_if_init(); +} + + +/******************************************************************************* +** +** Function SMP_SetTraceLevel +** +** Description This function sets the trace level for SMP. If called with +** a value of 0xFF, it simply returns the current trace level. +** +** Input Parameters: +** level: The level to set the GATT tracing to: +** 0xff-returns the current setting. +** 0-turns off tracing. +** >= 1-Errors. +** >= 2-Warnings. +** >= 3-APIs. +** >= 4-Events. +** >= 5-Debug. +** +** Returns The new or current trace level +** +*******************************************************************************/ +SMP_API extern UINT8 SMP_SetTraceLevel (UINT8 new_level) +{ + if (new_level != 0xFF) + smp_cb.trace_level = new_level; + + return(smp_cb.trace_level); +} + + +/******************************************************************************* +** +** Function SMP_Register +** +** Description This function register for the SMP services callback. +** +** Returns void +** +*******************************************************************************/ +BOOLEAN SMP_Register (tSMP_CALLBACK *p_cback) +{ + SMP_TRACE_EVENT1 ("SMP_Register state=%d", smp_cb.state); + + if (smp_cb.p_callback != NULL) + { + SMP_TRACE_ERROR0 ("SMP_Register: duplicate registration, overwrite it"); + } + smp_cb.p_callback = p_cback; + + return(TRUE); + +} + +/******************************************************************************* +** +** Function SMP_Pair +** +** Description This function call to perform a SMP pairing with peer device. +** Device support one SMP pairing at one time. +** +** Parameters bd_addr - peer device bd address. +** +** Returns None +** +*******************************************************************************/ +tSMP_STATUS SMP_Pair (BD_ADDR bd_addr) +{ + tSMP_CB *p_cb = &smp_cb; + UINT8 status = SMP_PAIR_INTERNAL_ERR; + + BTM_TRACE_EVENT2 ("SMP_Pair state=%d flag=0x%x ", p_cb->state, p_cb->flags); + if (p_cb->state != SMP_ST_IDLE || p_cb->flags & SMP_PAIR_FLAGS_WE_STARTED_DD) + { + /* pending security on going, reject this one */ + return SMP_BUSY; + } + else + { + p_cb->flags = SMP_PAIR_FLAGS_WE_STARTED_DD; + + memcpy (p_cb->pairing_bda, bd_addr, BD_ADDR_LEN); + + if (!L2CA_ConnectFixedChnl (L2CAP_SMP_CID, bd_addr)) + { + SMP_TRACE_ERROR0("SMP_Pair: L2C connect fixed channel failed."); + smp_sm_event(p_cb, SMP_AUTH_CMPL_EVT, &status); + return status; + } + + return SMP_STARTED; + } +} + + +/******************************************************************************* +** +** Function SMP_PairCancel +** +** Description This function call to cancel a SMP pairing with peer device. +** +** Parameters bd_addr - peer device bd address. +** +** Returns TRUE - Pairining is cancelled +** +*******************************************************************************/ +BOOLEAN SMP_PairCancel (BD_ADDR bd_addr) +{ + tSMP_CB *p_cb = &smp_cb; + UINT8 err_code = SMP_PAIR_FAIL_UNKNOWN; + BOOLEAN status = FALSE; + + BTM_TRACE_EVENT2 ("SMP_CancelPair state=%d flag=0x%x ", p_cb->state, p_cb->flags); + if ( (p_cb->state != SMP_ST_IDLE) && + (!memcmp (p_cb->pairing_bda, bd_addr, BD_ADDR_LEN)) ) + { + p_cb->is_pair_cancel = TRUE; + SMP_TRACE_DEBUG0("Cancel Pairing: set fail reason Unknown"); + smp_sm_event(p_cb, SMP_AUTH_CMPL_EVT, &err_code); + status = TRUE; + } + + return status; +} +/******************************************************************************* +** +** Function SMP_SecurityGrant +** +** Description This function is called to grant security process. +** +** Parameters bd_addr - peer device bd address. +** res - result of the operation SMP_SUCCESS if success. +** Otherwise, SMP_REPEATED_ATTEMPTS is too many attempts. +** +** Returns None +** +*******************************************************************************/ +void SMP_SecurityGrant(BD_ADDR bd_addr, UINT8 res) +{ + SMP_TRACE_EVENT0 ("SMP_SecurityGrant "); + if (smp_cb.state != SMP_ST_WAIT_APP_RSP || + smp_cb.cb_evt != SMP_SEC_REQUEST_EVT || + memcmp (smp_cb.pairing_bda, bd_addr, BD_ADDR_LEN)) + return; + + smp_sm_event(&smp_cb, SMP_API_SEC_GRANT_EVT, &res); +} + +/******************************************************************************* +** +** Function SMP_PasskeyReply +** +** Description This function is called after Security Manager submitted +** passkey request to the application. +** +** Parameters: bd_addr - Address of the device for which passkey was requested +** res - result of the operation SMP_SUCCESS if success +** passkey - numeric value in the range of +** BTM_MIN_PASSKEY_VAL(0) - BTM_MAX_PASSKEY_VAL(999999(0xF423F)). +** +*******************************************************************************/ +void SMP_PasskeyReply (BD_ADDR bd_addr, UINT8 res, UINT32 passkey) +{ + tSMP_CB *p_cb = & smp_cb; + UINT8 failure = SMP_PASSKEY_ENTRY_FAIL; + tBTM_SEC_DEV_REC *p_dev_rec; + + SMP_TRACE_EVENT2 ("SMP_PasskeyReply: Key: %d Result:%d", + passkey, res); + + /* If timeout already expired or has been canceled, ignore the reply */ + if (p_cb->cb_evt != SMP_PASSKEY_REQ_EVT) + { + SMP_TRACE_WARNING1 ("SMP_PasskeyReply() - Wrong State: %d", p_cb->state); + return; + } + + if (memcmp (bd_addr, p_cb->pairing_bda, BD_ADDR_LEN) != 0) + { + SMP_TRACE_ERROR0 ("SMP_PasskeyReply() - Wrong BD Addr"); + return; + } + + if ((p_dev_rec = btm_find_dev (bd_addr)) == NULL) + { + SMP_TRACE_ERROR0 ("SMP_PasskeyReply() - no dev CB"); + return; + } + + + if (passkey > BTM_MAX_PASSKEY_VAL || res != SMP_SUCCESS) + { + SMP_TRACE_WARNING1 ("SMP_PasskeyReply() - Wrong key len: %d or passkey entry fail", passkey); + /* send pairing failure */ + smp_sm_event(p_cb, SMP_AUTH_CMPL_EVT, &failure); + + } + else + { + smp_convert_string_to_tk(p_cb->tk, passkey); + } + + return; +} + +/******************************************************************************* +** +** Function SMP_OobDataReply +** +** Description This function is called to provide the OOB data for +** SMP in response to SMP_OOB_REQ_EVT +** +** Parameters: bd_addr - Address of the peer device +** res - result of the operation SMP_SUCCESS if success +** p_data - simple pairing Randomizer C. +** +*******************************************************************************/ +void SMP_OobDataReply(BD_ADDR bd_addr, tSMP_STATUS res, UINT8 len, UINT8 *p_data) +{ + tSMP_CB *p_cb = & smp_cb; + UINT8 failure = SMP_OOB_FAIL; + tSMP_KEY key; + + SMP_TRACE_EVENT2 ("SMP_OobDataReply State: %d res:%d", + smp_cb.state, res); + + /* If timeout already expired or has been canceled, ignore the reply */ + if (p_cb->state != SMP_ST_WAIT_APP_RSP || p_cb->cb_evt != SMP_OOB_REQ_EVT) + return; + + if (res != SMP_SUCCESS || len == 0 || !p_data) + { + smp_sm_event(p_cb, SMP_AUTH_CMPL_EVT, &failure); + } + else + { + if (len > BT_OCTET16_LEN) + len = BT_OCTET16_LEN; + + memcpy(p_cb->tk, p_data, len); + + key.key_type = SMP_KEY_TYPE_TK; + key.p_data = p_cb->tk; + + smp_sm_event(&smp_cb, SMP_KEY_READY_EVT, &key); + } +} + +/******************************************************************************* +** +** Function SMP_Encrypt +** +** Description This function is called to encrypt the data with the specified +** key +** +** Parameters: key - Pointer to key key[0] conatins the MSB +** key_len - key length +** plain_text - Pointer to data to be encrypted +** plain_text[0] conatins the MSB +** pt_len - plain text length +** p_out - output of the encrypted texts +** +** Returns Boolean - request is successful +*******************************************************************************/ +BOOLEAN SMP_Encrypt (UINT8 *key, UINT8 key_len, + UINT8 *plain_text, UINT8 pt_len, + tSMP_ENC *p_out) + +{ + BOOLEAN status=FALSE; + status = smp_encrypt_data(key, key_len, plain_text, pt_len, p_out); + return status; +} +#endif /* SMP_INCLUDED */ + + |