/****************************************************************************** * * 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 functions for BLE GAP. * ******************************************************************************/ #include #include #include #include "bt_types.h" #include "btu.h" #include "btm_int.h" #include "hcimsgs.h" #if (GAP_INCLUDED == TRUE) #include "gap_api.h" #endif #if (BLE_INCLUDED == TRUE) #define BTM_BLE_NAME_SHORT 0x01 #define BTM_BLE_NAME_CMPL 0x02 #define BTM_BLE_FILTER_TARGET_UNKNOWN 0xff #define BTM_BLE_POLICY_UNKNOWN 0xff #define BLE_RESOLVE_ADDR_MSB 0x40 /* most significant bit, bit7, bit6 is 01 to be resolvable random */ #define BLE_RESOLVE_ADDR_MASK 0xc0 /* bit 6, and bit7 */ #define BTM_BLE_IS_RESOLVE_BDA(x) ((x[0] & BLE_RESOLVE_ADDR_MASK) == BLE_RESOLVE_ADDR_MSB) #define BTM_EXT_BLE_RMT_NAME_TIMEOUT 30 static tBLE_BD_ADDR le_bda_any ={BLE_ADDR_PUBLIC, {0x00,0x00,0x00,0x00,0x00,0x00}}; #define BTM_BLE_VALID_CONN_DIRECT(x) (memcmp(&le_bda_any, x, sizeof(tBLE_BD_ADDR)) != 0) /******************************************************************************* ** Local functions *******************************************************************************/ static void btm_ble_update_adv_flag(UINT8 flag); static void btm_ble_process_adv_pkt_cont(BD_ADDR bda, UINT8 addr_type, UINT8 evt_type, UINT8 *p); static UINT8 *btm_ble_build_adv_data(tBTM_BLE_AD_MASK *p_data_mask, UINT8 **p_dst, tBTM_BLE_ADV_DATA *p_data); /******************************************************************************* ** ** Function BTM_BleReset ** ** Description This function is called to reset ULP controller. ** ** Parameters None. ** ** Returns void ** *******************************************************************************/ void BTM_BleReset(void) { btsnd_hcic_ble_reset(); } /******************************************************************************* ** ** Function BTM_BleObserve ** ** Description This procedure keep the device listening for advertising ** events from a broadcast device. ** ** Parameters start: start or stop observe. ** white_list: use white list in observer mode or not. ** ** Returns void ** *******************************************************************************/ tBTM_STATUS BTM_BleObserve(BOOLEAN start, UINT8 duration, tBTM_INQ_RESULTS_CB *p_results_cb, tBTM_CMPL_CB *p_cmpl_cb) { tBTM_BLE_INQ_CB *p_inq = &btm_cb.ble_ctr_cb.inq_var; tBTM_STATUS status = BTM_NO_RESOURCES; BTM_TRACE_EVENT0 ("BTM_BleObserve "); if (start) { if (p_inq->proc_mode != BTM_BLE_INQUIRY_NONE) return BTM_BUSY; btm_cb.btm_inq_vars.p_inq_results_cb = p_results_cb; btm_cb.btm_inq_vars.p_inq_cmpl_cb = p_cmpl_cb; /* allow config scanning type */ if (btsnd_hcic_ble_set_scan_params ((UINT8)((p_inq->scan_type == BTM_BLE_SCAN_MODE_NONE) ? BTM_BLE_SCAN_MODE_ACTI: p_inq->scan_type), (UINT16)(!p_inq->scan_interval ? BTM_BLE_GAP_DISC_SCAN_INT : p_inq->scan_interval), (UINT16)(!p_inq->scan_window ? BTM_BLE_GAP_DISC_SCAN_WIN : p_inq->scan_window), BLE_ADDR_PUBLIC, BTM_BLE_DEFAULT_SFP)) /* assume observe always not using white list */ { /* start scan, disable duplicate filtering */ if (btsnd_hcic_ble_set_scan_enable (BTM_BLE_SCAN_ENABLE, BTM_BLE_DUPLICATE_DISABLE)) { status = BTM_SUCCESS; p_inq->proc_mode = BTM_BLE_OBSERVE; btm_cb.btm_inq_vars.inq_active = TRUE; if (duration != 0) { /* start inquiry timer */ btu_start_timer (&p_inq->inq_timer_ent, BTU_TTYPE_BLE_INQUIRY, duration); } } } } else if (p_inq->proc_mode == BTM_BLE_OBSERVE) { btm_ble_stop_scan(); } return status; } /******************************************************************************* ** ** Function BTM_BleBroadcast ** ** Description This function is to start or stop broadcasting. ** ** Parameters start: start or stop broadcasting. ** ** Returns status. ** *******************************************************************************/ tBTM_STATUS BTM_BleBroadcast(BOOLEAN start) { tBTM_STATUS status = BTM_NO_RESOURCES; tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var; UINT8 evt_type = p_cb->scan_rsp ? BTM_BLE_DISCOVER_EVT: BTM_BLE_NON_CONNECT_EVT; #ifdef BTM_BLE_PC_ADV_TEST_MODE if (BTM_BLE_PC_ADV_TEST_MODE) { evt_type = p_cb->scan_rsp ? BTM_BLE_CONNECT_EVT: BTM_BLE_NON_CONNECT_EVT; } #endif if (start && p_cb->adv_mode == BTM_BLE_ADV_DISABLE) { /* update adv params */ if (!btsnd_hcic_ble_write_adv_params ((UINT16)(p_cb->adv_interval_min ? p_cb->adv_interval_min : BTM_BLE_GAP_ADV_INT), (UINT16)(p_cb->adv_interval_max ? p_cb->adv_interval_max : BTM_BLE_GAP_ADV_INT), evt_type, p_cb->own_addr_type, p_cb->direct_bda.type, p_cb->direct_bda.bda, p_cb->adv_chnl_map, p_cb->afp)) status = BTM_NO_RESOURCES; else p_cb->evt_type = evt_type; if (btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_ENABLE)) { p_cb->adv_mode = BTM_BLE_ADV_ENABLE; status = BTM_SUCCESS; } } else if (!start && p_cb->adv_mode == BTM_BLE_ADV_ENABLE) { if (btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_DISABLE)) { p_cb->adv_mode = BTM_BLE_ADV_DISABLE; status = BTM_SUCCESS; } } else { status = BTM_WRONG_MODE; BTM_TRACE_ERROR2("Can not %s Broadcast, device %s in Broadcast mode", (start ? "Start" : "Stop"), (start ? "alerady" :"not")); } return status; } /******************************************************************************* ** ** Function BTM_RegisterScanReqEvt ** ** Description This function is called to register a scan request callback ** on the advertiser. ** ** Parameters p_scan_req_cback: scan request callback. If NULL, remove the ** registration. ** ** Returns void ** *******************************************************************************/ void BTM_RegisterScanReqEvt(tBTM_BLE_SCAN_REQ_CBACK *p_scan_req_cback) { #ifdef BTM_BLE_PC_ADV_TEST_MODE // For general stack code (e.g. BTInsight testing), we simply do not define it to exclude or set it to TRUE to include if (BTM_BLE_PC_ADV_TEST_MODE) // For stack component, it is always defined and maps to a global variable g_bDraculaAdvertisingMode { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; p_cb->p_scan_req_cback = p_scan_req_cback; } #endif } /******************************************************************************* ** ** Function BTM_BleConfigPrivacy ** ** Description This function is called to enable or disable the privacy in ** the local device. ** ** Parameters enable: TRUE to enable it; FALSE to disable it. ** ** Returns void ** *******************************************************************************/ void BTM_BleConfigPrivacy(BOOLEAN enable) { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; BTM_TRACE_EVENT0 (" BTM_BleConfigPrivacy"); p_cb->privacy = enable; } /******************************************************************************* ** ** Function BTM_BleSetBgConnType ** ** Description This function is called to set BLE connectable mode for a ** peripheral device. ** ** Parameters bg_conn_type: it can be auto connection, or selective connection. ** p_select_cback: callback function when selective connection procedure ** is being used. ** ** Returns void ** *******************************************************************************/ BOOLEAN BTM_BleSetBgConnType(tBTM_BLE_CONN_TYPE bg_conn_type, tBTM_BLE_SEL_CBACK *p_select_cback) { BOOLEAN started = TRUE; BTM_TRACE_EVENT0 ("BTM_BleSetBgConnType "); if (btm_cb.ble_ctr_cb.bg_conn_type != bg_conn_type) { switch (bg_conn_type) { case BTM_BLE_CONN_AUTO: btm_ble_start_auto_conn(TRUE); break; case BTM_BLE_CONN_SELECTIVE: if (btm_cb.ble_ctr_cb.bg_conn_type == BTM_BLE_CONN_AUTO) { btm_ble_start_auto_conn(FALSE); } started = btm_ble_start_select_conn(TRUE, p_select_cback); break; case BTM_BLE_CONN_NONE: if (btm_cb.ble_ctr_cb.bg_conn_type == BTM_BLE_CONN_AUTO) { btm_ble_start_auto_conn(FALSE); } else if (btm_cb.ble_ctr_cb.bg_conn_type == BTM_BLE_CONN_SELECTIVE) { btm_ble_start_select_conn(FALSE, NULL); } started = TRUE; break; default: BTM_TRACE_ERROR1("invalid bg connection type : %d ", bg_conn_type); started = FALSE; break; } if (started) btm_cb.ble_ctr_cb.bg_conn_type = bg_conn_type; } return started; } /******************************************************************************* ** ** Function BTM_BleUpdateBgConnDev ** ** Description This function is called to add or remove a device into/from ** background connection procedure. The background connection * procedure is decided by the background connection type, it can be * auto connection, or selective connection. ** ** Parameters add_remove: TRUE to add; FALSE to remove. ** remote_bda: device address to add/remove. ** ** Returns void ** *******************************************************************************/ BOOLEAN BTM_BleUpdateBgConnDev(BOOLEAN add_remove, BD_ADDR remote_bda) { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; tBTM_BLE_SEL_CBACK *p_select_cback; BOOLEAN ret = TRUE; BTM_TRACE_EVENT0 (" BTM_BleUpdateBgConnDev"); /* if auto connection is active */ if (p_cb->bg_conn_state == BLE_BG_CONN_ACTIVE) { if (p_cb->bg_conn_type == BTM_BLE_CONN_AUTO) { /* terminate auto connection first */ ret = btm_ble_start_auto_conn(FALSE); } else if (p_cb->bg_conn_type == BTM_BLE_CONN_SELECTIVE) { p_select_cback = btm_cb.ble_ctr_cb.p_select_cback; ret = btm_ble_start_select_conn(FALSE, NULL); } } if (ret) { /* update white list */ ret = btm_update_bg_conn_list(add_remove, remote_bda); btm_update_dev_to_white_list(add_remove, remote_bda, BLE_ADDR_PUBLIC); } if (ret && p_cb->bg_conn_state == BLE_BG_CONN_IDLE) { if (p_cb->bg_conn_type == BTM_BLE_CONN_AUTO) { /* restart auto connection */ btm_ble_start_auto_conn(TRUE); } else if (p_cb->bg_conn_type == BTM_BLE_CONN_SELECTIVE) { p_select_cback = btm_cb.ble_ctr_cb.p_select_cback; btm_ble_start_select_conn(TRUE, p_select_cback); } } return ret; } /******************************************************************************* ** ** Function BTM_BleSetConnMode ** ** Description This function is called to set BLE connectable mode for a ** peripheral device. ** ** Parameters directed: is directed connectable mode, or non-directed. ** p_dir_bda: connectable direct initiator's LE device address ** ** Returns void ** *******************************************************************************/ tBTM_STATUS BTM_BleSetConnMode(BOOLEAN directed, tBLE_BD_ADDR *p_dir_bda) { tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var; tBTM_STATUS status = BTM_SUCCESS; BD_ADDR reconn_bda; BTM_TRACE_EVENT0 ("BTM_BleSetConnMode "); memcpy(&p_cb->direct_bda, &le_bda_any, sizeof(tBLE_BD_ADDR)); p_cb->own_addr_type = BLE_ADDR_PUBLIC; if (directed) { if (p_dir_bda) { memcpy(&p_cb->direct_bda, p_dir_bda, sizeof(tBLE_BD_ADDR)); if (btm_cb.ble_ctr_cb.privacy /* && GAP privacy ad reconnect addr exist */) { /* write reconnect address to controller*/ btsnd_hcic_ble_set_random_addr(reconn_bda); } /* else use static address or publich address */ } else status = BTM_ILLEGAL_VALUE; } else /* undirected connecatable */ { if (btm_cb.ble_ctr_cb.privacy /* GAP privacy flag enabled */) { /* generate resolvable private address */ btm_gen_resolvable_private_addr(); } /* else use publich address */ } return status; } /******************************************************************************* ** ** Function BTM_BleSetAdvParams ** ** Description This function is called to set advertising parameters. ** ** Parameters adv_int_min: minimum advertising interval ** adv_int_max: maximum advertising interval ** p_dir_bda: connectable direct initiator's LE device address ** chnl_map: advertising channel map. ** ** Returns void ** *******************************************************************************/ tBTM_STATUS BTM_BleSetAdvParams(UINT16 adv_int_min, UINT16 adv_int_max, tBLE_BD_ADDR *p_dir_bda, tBTM_BLE_ADV_CHNL_MAP chnl_map) { tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var; tBTM_STATUS status = BTM_SUCCESS; BTM_TRACE_EVENT0 ("BTM_BleSetAdvParams"); if (!BTM_BLE_VALID_PRAM(adv_int_min, BTM_BLE_ADV_INT_MIN, BTM_BLE_ADV_INT_MAX) || !BTM_BLE_VALID_PRAM(adv_int_max, BTM_BLE_ADV_INT_MIN, BTM_BLE_ADV_INT_MAX)) { return BTM_ILLEGAL_VALUE; } p_cb->adv_interval_min = adv_int_min; p_cb->adv_interval_max = adv_int_max; p_cb->adv_chnl_map = chnl_map; if (p_dir_bda) { memcpy(&p_cb->direct_bda, p_dir_bda, sizeof(tBLE_BD_ADDR)); } else memcpy(&p_cb->direct_bda, &le_bda_any, sizeof(tBLE_BD_ADDR)); if (p_cb->adv_mode == BTM_BLE_ADV_ENABLE) { BTM_TRACE_EVENT0 ("update params for an active adv"); if (p_cb->connectable_mode == BTM_BLE_NON_CONNECTABLE) { if (BTM_BLE_VALID_CONN_DIRECT(&p_cb->direct_bda)) p_cb->evt_type = BTM_BLE_CONNECT_DIR_EVT; else p_cb->evt_type = BTM_BLE_CONNECT_EVT; BTM_TRACE_DEBUG1(" evt_type = %d", p_cb->evt_type); } if (!btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_DISABLE)) status = BTM_NO_RESOURCES; else /* update adv params */ if (!btsnd_hcic_ble_write_adv_params (p_cb->adv_interval_min, p_cb->adv_interval_max, p_cb->evt_type, p_cb->own_addr_type, p_cb->direct_bda.type, p_cb->direct_bda.bda, p_cb->adv_chnl_map, p_cb->afp)) status = BTM_NO_RESOURCES; else if (!btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_ENABLE)) { p_cb->adv_mode = BTM_BLE_ADV_DISABLE; status = BTM_NO_RESOURCES; } } return status; } /******************************************************************************* ** ** Function BTM_BleReadAdvParams ** ** Description This function is called to set advertising parameters. ** ** Parameters adv_int_min: minimum advertising interval ** adv_int_max: maximum advertising interval ** p_dir_bda: connectable direct initiator's LE device address ** chnl_map: advertising channel map. ** ** Returns void ** *******************************************************************************/ void BTM_BleReadAdvParams (UINT16 *adv_int_min, UINT16 *adv_int_max, tBLE_BD_ADDR *p_dir_bda, tBTM_BLE_ADV_CHNL_MAP *p_chnl_map) { tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var; BTM_TRACE_EVENT0 ("BTM_BleReadAdvParams "); *adv_int_min = p_cb->adv_interval_min; *adv_int_max = p_cb->adv_interval_max; *p_chnl_map = p_cb->adv_chnl_map; if (p_dir_bda != NULL) { memcpy(p_dir_bda, &p_cb->direct_bda, sizeof(tBLE_BD_ADDR)); } } /******************************************************************************* ** ** Function BTM_BleSetScanParams ** ** Description This function is called to set Scan parameters. ** ** Parameters adv_int_min: minimum advertising interval ** adv_int_max: maximum advertising interval ** p_dir_bda: connectable direct initiator's LE device address ** chnl_map: advertising channel map. ** scan_type: active scan or passive scan ** ** Returns void ** *******************************************************************************/ void BTM_BleSetScanParams(UINT16 scan_interval, UINT16 scan_window, tBTM_BLE_SCAN_MODE scan_mode) { tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var; BTM_TRACE_EVENT0 (" BTM_BleSetScanParams"); if (BTM_BLE_VALID_PRAM(scan_interval, BTM_BLE_SCAN_INT_MIN, BTM_BLE_SCAN_INT_MAX) && BTM_BLE_VALID_PRAM(scan_window, BTM_BLE_SCAN_WIN_MIN, BTM_BLE_SCAN_WIN_MAX) && (scan_mode == BTM_BLE_SCAN_MODE_ACTI || scan_mode == BTM_BLE_SCAN_MODE_PASS)) { p_cb->scan_type = scan_mode; if (BTM_BLE_CONN_PARAM_UNDEF != scan_interval) p_cb->scan_interval = scan_interval; if (BTM_BLE_CONN_PARAM_UNDEF != scan_window) p_cb->scan_window = scan_window; } else { BTM_TRACE_ERROR2("Illegal params: scan_interval = %d scan_window = %d", scan_interval, scan_window); } } /******************************************************************************* ** ** Function BTM_BleWriteScanRsp ** ** Description This function is called to write LE scan response. ** ** Parameters: p_scan_rsp: scan response information. ** ** Returns void ** *******************************************************************************/ tBTM_STATUS BTM_BleWriteScanRsp(tBTM_BLE_AD_MASK data_mask, tBTM_BLE_ADV_DATA *p_data) { tBTM_STATUS status = BTM_NO_RESOURCES; UINT8 rsp_data[BTM_BLE_AD_DATA_LEN], *p = rsp_data; BTM_TRACE_EVENT0 (" BTM_BleWriteScanRsp"); memset(rsp_data, 0, BTM_BLE_AD_DATA_LEN); btm_ble_build_adv_data(&data_mask, &p, p_data); if (btsnd_hcic_ble_set_scan_rsp_data((UINT8)(p - rsp_data), rsp_data)) { status = BTM_SUCCESS; if (p_data != NULL) btm_cb.ble_ctr_cb.inq_var.scan_rsp = TRUE; else btm_cb.ble_ctr_cb.inq_var.scan_rsp = FALSE; } else status = BTM_ILLEGAL_VALUE; return status; } /******************************************************************************* ** ** Function BTM_BleWriteAdvData ** ** Description This function is called to write advertising data. ** ** Parameters: None. ** ** Returns void ** *******************************************************************************/ tBTM_STATUS BTM_BleWriteAdvData(tBTM_BLE_AD_MASK data_mask, tBTM_BLE_ADV_DATA *p_data) { tBTM_BLE_LOCAL_ADV_DATA *p_cb_data = &btm_cb.ble_ctr_cb.inq_var.adv_data; UINT8 *p; UINT16 mask = data_mask; memset(p_cb_data, 0, sizeof(tBTM_BLE_LOCAL_ADV_DATA)); p = p_cb_data->ad_data; p_cb_data->data_mask = data_mask; BTM_TRACE_EVENT0 ("BTM_BleWriteAdvData "); p_cb_data->p_flags = btm_ble_build_adv_data(&mask, &p, p_data); p_cb_data->p_pad = p; if (data_mask != 0) { BTM_TRACE_ERROR0("Partial data write into ADV"); } p_cb_data->data_mask &= ~mask; if (btsnd_hcic_ble_set_adv_data((UINT8)(p_cb_data->p_pad - p_cb_data->ad_data), p_cb_data->ad_data)) return BTM_SUCCESS; else return BTM_NO_RESOURCES; } /******************************************************************************* ** ** Function BTM_CheckAdvData ** ** Description This function is called to get ADV data for a specific type. ** ** Parameters p_adv - pointer of ADV data ** type - finding ADV data type ** p_length - return the length of ADV data not including type ** ** Returns pointer of ADV data ** *******************************************************************************/ UINT8 *BTM_CheckAdvData( UINT8 *p_adv, UINT8 type, UINT8 *p_length) { UINT8 *p = p_adv; UINT8 length; UINT8 adv_type; BTM_TRACE_API1("BTM_CheckAdvData type=0x%02X", type); STREAM_TO_UINT8(length, p); while ( length && (p - p_adv <= BTM_BLE_CACHE_ADV_DATA_MAX)) { STREAM_TO_UINT8(adv_type, p); if ( adv_type == type ) { /* length doesn't include itself */ *p_length = length - 1; /* minus the length of type */ return p; } p += length - 1; /* skip the length of data */ STREAM_TO_UINT8(length, p); } *p_length = 0; return NULL; } /******************************************************************************* ** ** Function btm_ble_build_adv_data ** ** Description This function is called build the adv data and rsp data. *******************************************************************************/ static UINT8 *btm_ble_build_adv_data(tBTM_BLE_AD_MASK *p_data_mask, UINT8 **p_dst, tBTM_BLE_ADV_DATA *p_data) { UINT16 data_mask = *p_data_mask; UINT8 *p = *p_dst, *p_flag = NULL; UINT16 len = BTM_BLE_AD_DATA_LEN, cp_len = 0; UINT8 i = 0; tBTM_BLE_ATTR *p_attr; tBTM_BLE_PROP_ELEM *p_elem; BTM_TRACE_EVENT0 (" btm_ble_build_adv_data"); /* build the adv data structure and build the data string */ if (data_mask) { /* flags */ if (data_mask & BTM_BLE_AD_BIT_FLAGS) { *p++ = 2; *p++ = BTM_BLE_AD_TYPE_FLAG; p_flag = p; if (p_data) *p++ = p_data->flag; else *p++ = 0; len -= 3; data_mask &= ~BTM_BLE_AD_BIT_FLAGS; } /* device name */ if (len > 2 && data_mask & BTM_BLE_AD_BIT_DEV_NAME) { if (strlen(btm_cb.cfg.bd_name) > (UINT16)(len - 2)) { *p++ = len - 2 + 1; *p++ = BTM_BLE_AD_TYPE_NAME_SHORT; ARRAY_TO_STREAM(p, btm_cb.cfg.bd_name, len - 2); } else { cp_len = (UINT16)strlen(btm_cb.cfg.bd_name); *p++ = cp_len + 1; *p++ = BTM_BLE_AD_TYPE_NAME_CMPL; ARRAY_TO_STREAM(p, btm_cb.cfg.bd_name, cp_len); } len -= (cp_len + 2); data_mask &= ~BTM_BLE_AD_BIT_DEV_NAME; } /* manufacturer data */ if (len > 2 && data_mask & BTM_BLE_AD_BIT_MANU && p_data && p_data->manu.len != 0 && p_data->manu.p_val) { if (p_data->manu.len > (len - 2)) cp_len = len - 2; else cp_len = p_data->manu.len; *p++ = cp_len + 1; *p++ = BTM_BLE_AD_TYPE_MANU; ARRAY_TO_STREAM(p, p_data->manu.p_val, cp_len); len -= (cp_len + 2); data_mask &= ~BTM_BLE_AD_BIT_MANU; } /* TX power */ if (len > 2 && data_mask & BTM_BLE_AD_BIT_TX_PWR) { *p++ = 2; *p++ = BTM_BLE_AD_TYPE_TX_PWR; *p++ = btm_cb.ble_ctr_cb.inq_var.tx_power; len -= 3; data_mask &= ~BTM_BLE_AD_BIT_TX_PWR; } /* services */ if (len > 2 && data_mask & BTM_BLE_AD_BIT_SERVICE && p_data && p_data->services.num_service != 0 && p_data->services.p_uuid) { if (p_data->services.num_service * 2 > (len - 2)) { cp_len = (len - 2)/2; *p ++ = 1 + cp_len * 2; *p++ = BTM_BLE_AD_TYPE_SRV_PART; } else { cp_len = p_data->services.num_service; *p++ = 1 + cp_len * 2; *p++ = BTM_BLE_AD_TYPE_SRV_CMPL; } for (i = 0; i < cp_len; i ++) { UINT16_TO_STREAM(p, *(p_data->services.p_uuid + i)); } len -= (cp_len * 2 + 2); data_mask &= ~BTM_BLE_AD_BIT_SERVICE; } if (len >= 6 && data_mask & BTM_BLE_AD_BIT_INT_RANGE && p_data) { *p++ = 5; *p++ = BTM_BLE_AD_TYPE_INT_RANGE; UINT16_TO_STREAM(p, p_data->int_range.low); UINT16_TO_STREAM(p, p_data->int_range.hi); len -= 6; data_mask &= ~BTM_BLE_AD_BIT_INT_RANGE; } if (data_mask & BTM_BLE_AD_BIT_ATTR && p_data && p_data->attr.num_attr != 0) { for (i = 0; i < p_data->attr.num_attr ; i ++) { p_attr = p_data->attr.attr_list + i; if (len >= (2 + 2 + p_attr->data_len))/* len byte(1) + ATTR type(1) + Uuid len(2) + value length */ { *p ++ = p_attr->data_len + 2 + 1; /* Uuid len + value length */ *p ++ = BTM_BLE_AD_TYPE_ATTR; UINT16_TO_STREAM(p, p_attr->uuid); ARRAY_TO_STREAM(p, p_attr->p_data, p_attr->data_len); len -= (4 + p_attr->data_len); } else break; } if (i == p_data->attr.num_attr) data_mask &= ~BTM_BLE_AD_BIT_ATTR; } if (data_mask & BTM_BLE_AD_BIT_PROPRIETARY && p_data && p_data->p_proprietary) { for (i = 0; i < p_data->p_proprietary->num_elem ; i ++) { p_elem = p_data->p_proprietary->p_elem + i; if (len >= (2 + p_elem->len))/* len byte(1) + ATTR type(1) + Uuid len(2) + value length */ { *p ++ = p_elem->len + 1; /* Uuid len + value length */ *p ++ = p_elem->adv_type; ARRAY_TO_STREAM(p, p_elem->p_val, p_elem->len); len -= (2 + p_elem->len); } else { BTM_TRACE_WARNING0("data exceed max adv packet length"); break; } } data_mask &= ~BTM_BLE_AD_BIT_PROPRIETARY; } } *p_data_mask = data_mask; *p_dst = p; return p_flag; } /******************************************************************************* ** ** Function btm_ble_set_discoverability ** ** Description This function is called to set BLE discoverable mode. ** ** Parameters: mode: discoverability mode. ** ** Returns void ** *******************************************************************************/ tBTM_STATUS btm_ble_set_discoverability(UINT16 combined_mode) { tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var; UINT16 mode = (combined_mode & BTM_BLE_DISCOVERABLE_MASK); UINT8 flag = 0; UINT8 new_mode = BTM_BLE_ADV_ENABLE; UINT8 evt_type = (p_cb->connectable_mode == BTM_BLE_NON_CONNECTABLE) ? \ ((p_cb->scan_rsp) ? BTM_BLE_DISCOVER_EVT : BTM_BLE_NON_CONNECT_EVT )\ : BTM_BLE_CONNECT_EVT; tBTM_STATUS status = BTM_SUCCESS; BTM_TRACE_EVENT2 ("btm_ble_set_discoverability mode=0x%0x combined_mode=0x%x", mode, combined_mode); /*** Check mode parameter ***/ if (mode > BTM_BLE_MAX_DISCOVERABLE) return(BTM_ILLEGAL_VALUE); p_cb->br_edr_supported_flag |= (combined_mode & BTM_DISCOVERABLE_MASK); p_cb->discoverable_mode = mode; if (!p_cb->br_edr_supported_flag) { flag = BTM_BLE_BREDR_NOT_SPT; BTM_TRACE_DEBUG1("btm_ble_set_discoverability (BREDR not sup)flag=0x%x",flag); } BTM_TRACE_DEBUG1 ("br_edr_supported=0x%x", p_cb->br_edr_supported_flag); if (mode == BTM_BLE_LIMITED_DISCOVERABLE || mode == BTM_BLE_GENERAL_DISCOVERABLE) { BTM_TRACE_EVENT0 ("mode == BTM_BLE_LIMITED_DISCOVERABLE "); /* write ADV data with limited disc flag */ if (mode == BTM_BLE_LIMITED_DISCOVERABLE) flag |= BTM_BLE_LIMIT_DISC_FLAG ; else flag |= BTM_BLE_GEN_DISC_FLAG; } else /* non-discoverable */ { BTM_TRACE_EVENT0 ("mode == BTM_BLE_NON_DISCOVERABLE "); if (p_cb->connectable_mode == BTM_BLE_NON_CONNECTABLE) { p_cb->br_edr_supported_flag = 0; BTM_TRACE_EVENT0 ("always disable adv in non-discoverable non-connectable mode if no scan rsp "); if (!p_cb->scan_rsp ) new_mode = BTM_BLE_ADV_DISABLE; } else { if (BTM_BLE_VALID_CONN_DIRECT(&p_cb->direct_bda)) { BTM_TRACE_DEBUG0("evt_type = BTM_BLE_CONNECT_DIR_EVT"); evt_type = BTM_BLE_CONNECT_DIR_EVT; } else { BTM_TRACE_DEBUG0(" evt_type = BTM_BLE_CONNECT_EVT"); evt_type = BTM_BLE_CONNECT_EVT; } } } btm_ble_update_adv_flag(flag); /* update adv params if start advertising */ BTM_TRACE_EVENT2 ("evt_type=0x%x p-cb->evt_type=0x%x ", evt_type, p_cb->evt_type); if (new_mode == BTM_BLE_ADV_ENABLE && evt_type != p_cb->evt_type) { if (p_cb->adv_mode == BTM_BLE_ADV_ENABLE) { BTM_TRACE_EVENT0 ("Set Adv disable"); p_cb->adv_mode = BTM_BLE_ADV_DISABLE; btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_DISABLE); } /* update adv params */ if (!btsnd_hcic_ble_write_adv_params ((UINT16)(p_cb->adv_interval_min ? p_cb->adv_interval_min : BTM_BLE_GAP_ADV_INT), (UINT16)(p_cb->adv_interval_max ? p_cb->adv_interval_max : BTM_BLE_GAP_ADV_INT), evt_type, p_cb->own_addr_type, p_cb->direct_bda.type, p_cb->direct_bda.bda, p_cb->adv_chnl_map, p_cb->afp)) status = BTM_NO_RESOURCES; else p_cb->evt_type = evt_type; } if (status == BTM_SUCCESS && p_cb->adv_mode != new_mode) { /* update advertising mode */ if (!btsnd_hcic_ble_set_adv_enable (new_mode)) status = BTM_NO_RESOURCES; else p_cb->adv_mode = new_mode; } /* set up stop advertising timer */ if (status == BTM_SUCCESS && mode == BTM_BLE_LIMITED_DISCOVERABLE) { BTM_TRACE_EVENT1 ("start timer for limited disc mode duration=%d (30 secs)", BTM_BLE_GAP_LIM_TOUT); /* start Tgap(lim_timeout) */ btu_start_timer (&p_cb->inq_timer_ent, BTU_TTYPE_BLE_GAP_LIM_DISC, BTM_BLE_GAP_LIM_TOUT); } return status; } /******************************************************************************* ** ** Function btm_ble_set_connectability ** ** Description This function is called to set BLE connectability mode. ** ** Parameters: mode: connectability mode. ** ** Returns void ** *******************************************************************************/ tBTM_STATUS btm_ble_set_connectability(UINT16 combined_mode) { tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var; UINT16 mode = (combined_mode & BTM_BLE_CONNECTABLE_MASK); UINT8 cur_flag = 0; UINT8 cur_br_edr_not_sup_flag; UINT8 new_flag; UINT8 new_mode = BTM_BLE_ADV_ENABLE; UINT8 evt_type = (p_cb->scan_rsp) ? BTM_BLE_DISCOVER_EVT: BTM_BLE_NON_CONNECT_EVT; tBTM_STATUS status = BTM_SUCCESS; BTM_TRACE_EVENT2 ("btm_ble_set_connectability mode=0x%0x combined_mode=0x%x", mode, combined_mode); /*** Check mode parameter ***/ if (mode > BTM_BLE_MAX_CONNECTABLE) return(BTM_ILLEGAL_VALUE); if (btm_cb.ble_ctr_cb.inq_var.adv_data.p_flags) cur_flag = *btm_cb.ble_ctr_cb.inq_var.adv_data.p_flags ; cur_br_edr_not_sup_flag = (cur_flag & ((UINT8) BTM_BLE_BREDR_NOT_SPT)); p_cb->br_edr_supported_flag |= ((combined_mode & BTM_CONNECTABLE_MASK) << 4); if (p_cb->br_edr_supported_flag && cur_br_edr_not_sup_flag) { new_flag = cur_flag & ((UINT8) (~BTM_BLE_BREDR_NOT_SPT)); BTM_TRACE_EVENT2 ("new flag=0x%x cur flag=0x%x",new_flag, cur_flag); btm_ble_update_adv_flag(new_flag); } p_cb->connectable_mode = mode; if (mode == BTM_BLE_NON_CONNECTABLE) { if (p_cb->discoverable_mode == BTM_BLE_NON_DISCOVERABLE) { p_cb->br_edr_supported_flag = 0; BTM_TRACE_EVENT0 ("always disable adv in non-discoverable non-connectable mode with no scan rsp"); if(!p_cb->scan_rsp) new_mode = BTM_BLE_ADV_DISABLE; } } else /* connectable */ { BTM_TRACE_DEBUG2("btm_ble_set_connectability: mode = %04x discoverable_mode= %02x", mode, p_cb->discoverable_mode); if (BTM_BLE_VALID_CONN_DIRECT(&p_cb->direct_bda)) { BTM_TRACE_DEBUG0("evt_type = BTM_BLE_CONNECT_DIR_EVT"); evt_type = BTM_BLE_CONNECT_DIR_EVT; } else { BTM_TRACE_DEBUG0(" evt_type = BTM_BLE_CONNECT_EVT"); evt_type = BTM_BLE_CONNECT_EVT; } } /* update adv params if needed */ if (p_cb->evt_type != evt_type && new_mode == BTM_BLE_ADV_ENABLE) { if (p_cb->adv_mode == BTM_BLE_ADV_ENABLE) { p_cb->adv_mode = BTM_BLE_ADV_DISABLE; btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_DISABLE); } if (!btsnd_hcic_ble_write_adv_params ((UINT16)(p_cb->adv_interval_min ? p_cb->adv_interval_min : BTM_BLE_GAP_ADV_INT), (UINT16)(p_cb->adv_interval_max ? p_cb->adv_interval_max : BTM_BLE_GAP_ADV_INT), evt_type, p_cb->own_addr_type, p_cb->direct_bda.type, p_cb->direct_bda.bda, p_cb->adv_chnl_map, p_cb->afp)) status = BTM_NO_RESOURCES; else p_cb->evt_type = evt_type; } /* update advertising mode */ if (status == BTM_SUCCESS && new_mode != p_cb->adv_mode) { if (btsnd_hcic_ble_set_adv_enable (new_mode)) { status = BTM_SUCCESS; p_cb->adv_mode = new_mode; } } return status; } /******************************************************************************* ** ** Function btm_ble_start_inquiry ** ** Description This function is called to start BLE inquiry procedure. ** If the duration is zero, the periodic inquiry mode is cancelled. ** ** Parameters: mode - GENERAL or LIMITED inquiry ** p_inq_params - pointer to the BLE inquiry parameter. ** p_results_cb - callback returning pointer to results (tBTM_INQ_RESULTS) ** p_cmpl_cb - callback indicating the end of an inquiry ** ** ** ** Returns BTM_CMD_STARTED if successfully started ** BTM_ILLEGAL_VALUE if a bad parameter is detected ** BTM_NO_RESOURCES if could not allocate a message buffer ** BTM_SUCCESS - if cancelling the periodic inquiry ** BTM_BUSY - if an inquiry is already active ** BTM_WRONG_MODE if the device is not up. ** *******************************************************************************/ tBTM_STATUS btm_ble_start_inquiry (UINT8 mode, UINT8 duration) { tBTM_STATUS status = BTM_NO_RESOURCES; tBTM_BLE_INQ_CB *p_inq = &btm_cb.ble_ctr_cb.inq_var; BTM_TRACE_DEBUG2("btm_ble_start_inquiry: mode = %02x inq_active = %d", mode, btm_cb.btm_inq_vars.inq_active); if (p_inq->proc_mode != BTM_BLE_INQUIRY_NONE) { BTM_TRACE_ERROR0("LE scan is active, can not start inquiry"); return(BTM_BUSY); } btm_update_scanner_filter_policy(SP_ADV_ALL); /* start scan, already enable duplicate filtering */ if (btsnd_hcic_ble_set_scan_enable (BTM_BLE_SCAN_ENABLE, BTM_BLE_DUPLICATE_DISABLE)) { status = BTM_SUCCESS; p_inq->proc_mode = mode; if (duration != 0) { /* start inquiry timer */ btu_start_timer (&p_inq->inq_timer_ent, BTU_TTYPE_BLE_INQUIRY, duration); } } return status; } /******************************************************************************* ** ** Function btm_ble_read_remote_name_cmpl ** ** Description This function is called when BLE remote name is received. ** ** Returns void ** *******************************************************************************/ void btm_ble_read_remote_name_cmpl(BOOLEAN status, BD_ADDR bda, UINT16 length, char *p_name) { UINT8 hci_status = HCI_SUCCESS; BD_NAME bd_name; memset(bd_name, 0, BD_NAME_LEN); memcpy((UINT8*)bd_name, p_name, length); if ((!status) || (length==0)) { hci_status = HCI_ERR_HOST_TIMEOUT; } btm_process_remote_name(bda, bd_name, length, hci_status); btm_sec_rmt_name_request_complete (bda, (UINT8 *)p_name, hci_status); } /******************************************************************************* ** ** Function btm_ble_read_remote_name ** ** Description This function read remote LE device name using GATT read ** procedure. ** ** Parameters: None. ** ** Returns void ** *******************************************************************************/ tBTM_STATUS btm_ble_read_remote_name(BD_ADDR remote_bda, tBTM_INQ_INFO *p_cur, tBTM_CMPL_CB *p_cb) { tBTM_INQUIRY_VAR_ST *p_inq = &btm_cb.btm_inq_vars; if (p_cur && p_cur->results.ble_evt_type != BTM_BLE_EVT_CONN_ADV && p_cur->results.ble_evt_type != BTM_BLE_EVT_CONN_DIR_ADV) { BTM_TRACE_DEBUG0("name request to non-connectable device failed."); return BTM_ERR_PROCESSING; } /* read remote device name using GATT procedure */ if (p_inq->remname_active) return BTM_BUSY; if (!GAP_BleReadPeerDevName(remote_bda, btm_ble_read_remote_name_cmpl)) return BTM_BUSY; p_inq->p_remname_cmpl_cb = p_cb; p_inq->remname_active = TRUE; memcpy(p_inq->remname_bda, remote_bda, BD_ADDR_LEN); btu_start_timer (&p_inq->rmt_name_timer_ent, BTU_TTYPE_BTM_RMT_NAME, BTM_EXT_BLE_RMT_NAME_TIMEOUT); return BTM_CMD_STARTED; } /******************************************************************************* ** ** Function btm_ble_cancel_remote_name ** ** Description This function cancel read remote LE device name. ** ** Parameters: None. ** ** Returns void ** *******************************************************************************/ BOOLEAN btm_ble_cancel_remote_name(BD_ADDR remote_bda) { tBTM_INQUIRY_VAR_ST *p_inq = &btm_cb.btm_inq_vars; BOOLEAN status; status = GAP_BleCancelReadPeerDevName(remote_bda); p_inq->remname_active = FALSE; memset(p_inq->remname_bda, 0, BD_ADDR_LEN); btu_stop_timer(&p_inq->rmt_name_timer_ent); return status; } /******************************************************************************* ** ** Function btm_ble_update_adv_flag ** ** Description This function update the limited discoverable flag in the adv ** data. ** ** Parameters: None. ** ** Returns void ** *******************************************************************************/ static void btm_ble_update_adv_flag(UINT8 flag) { tBTM_BLE_LOCAL_ADV_DATA *p_adv_data = &btm_cb.ble_ctr_cb.inq_var.adv_data; UINT8 *p; BTM_TRACE_DEBUG1 ("btm_ble_update_adv_flag new=0x%x", flag); if (p_adv_data->p_flags != NULL) { BTM_TRACE_DEBUG1 ("btm_ble_update_adv_flag old=0x%x", *p_adv_data->p_flags); *p_adv_data->p_flags = flag; } else /* no FLAGS in ADV data*/ { p = (p_adv_data->p_pad == NULL) ? p_adv_data->ad_data : p_adv_data->p_pad; /* need 3 bytes space to stuff in the flags, if not */ /* erase all written data, just for flags */ if ((BTM_BLE_AD_DATA_LEN - (p - p_adv_data->ad_data)) < 3) { p = p_adv_data->p_pad = p_adv_data->ad_data; memset(p_adv_data->ad_data, 0, BTM_BLE_AD_DATA_LEN); } *p++ = 2; *p++ = BTM_BLE_AD_TYPE_FLAG; p_adv_data->p_flags = p; *p++ = flag; p_adv_data->p_pad = p; } if (btsnd_hcic_ble_set_adv_data((UINT8)(p_adv_data->p_pad - p_adv_data->ad_data), p_adv_data->ad_data)) p_adv_data->data_mask |= BTM_BLE_AD_BIT_FLAGS; } #if 0 /******************************************************************************* ** ** Function btm_ble_parse_adv_data ** ** Description This function parse the adv data into a structure. ** ** Returns pointer to entry, or NULL if not found ** *******************************************************************************/ static void btm_ble_parse_adv_data(tBTM_INQ_INFO *p_info, UINT8 *p_data, UINT8 len, tBTM_BLE_INQ_DATA *p_adv_data, UINT8 *p_buf) { UINT8 *p_cur = p_data; UINT8 ad_len, ad_type, ad_flag; tBTM_BLE_ATTR *p_attr; BTM_TRACE_EVENT0 (" btm_ble_parse_adv_data"); while (len > 0) { BTM_TRACE_DEBUG1("btm_ble_parse_adv_data: len = %d", len); if ((ad_len = *p_cur ++) == 0) break; ad_type = *p_cur ++; BTM_TRACE_DEBUG2(" ad_type = %02x ad_len = %d", ad_type, ad_len); switch (ad_type) { case BTM_BLE_AD_TYPE_NAME_SHORT: case BTM_BLE_AD_TYPE_NAME_CMPL: p_adv_data->ad_mask |= BTM_BLE_AD_BIT_DEV_NAME; if (p_info) { p_info->remote_name_type =(ad_type == BTM_BLE_AD_TYPE_NAME_SHORT) ? BTM_BLE_NAME_SHORT: BTM_BLE_NAME_CMPL; memcpy(p_info->remote_name, p_cur, ad_len -1); p_info->remote_name[ad_len] = 0; p_adv_data->p_remote_name = p_info->remote_name; p_info->remote_name_len = p_adv_data->remote_name_len = ad_len - 1; BTM_TRACE_DEBUG1("BTM_BLE_AD_TYPE_NAME name = %s",p_adv_data->p_remote_name); } p_cur += (ad_len -1); break; case BTM_BLE_AD_TYPE_FLAG: p_adv_data->ad_mask |= BTM_BLE_AD_BIT_FLAGS; ad_flag = *p_cur ++; p_adv_data->flag = (UINT8)(ad_flag & BTM_BLE_ADV_FLAG_MASK) ; BTM_TRACE_DEBUG3("BTM_BLE_AD_TYPE_FLAG flag = %s | %s | %s", (p_adv_data->flag & BTM_BLE_LIMIT_DISC_FLAG)? "LE_LIMIT_DISC" : "", (p_adv_data->flag & BTM_BLE_GEN_DISC_FLAG)? "LE_GENERAL_DISC" : "", (p_adv_data->flag & BTM_BLE_BREDR_NOT_SPT)? "LE Only device" : ""); break; case BTM_BLE_AD_TYPE_TX_PWR: p_adv_data->ad_mask |= BTM_BLE_AD_BIT_TX_PWR; p_adv_data->tx_power_level = (INT8)*p_cur ++; BTM_TRACE_DEBUG1("BTM_BLE_AD_TYPE_TX_PWR tx_level = %d", p_adv_data->tx_power_level); break; case BTM_BLE_AD_TYPE_ATTR: p_adv_data->ad_mask |= BTM_BLE_AD_BIT_ATTR; p_attr = &p_adv_data->attr_data.attr_list[p_adv_data->attr_data.num_attr]; p_attr->uuid = *p_cur ++; if (ad_len > 3) { p_attr->data_len = ad_len - 3; p_attr->p_data = p_buf; memcpy(p_attr->p_data, p_cur, p_attr->data_len); p_buf += p_attr->data_len; } p_adv_data->attr_data.num_attr ++; BTM_TRACE_DEBUG2("BTM_BLE_AD_TYPE_ATTR[%d] uuid = 0x%04x",p_adv_data->attr_data.num_attr, p_attr->uuid); break; case BTM_BLE_AD_TYPE_MANU: case BTM_BLE_AD_TYPE_SRV_CMPL: case BTM_BLE_AD_TYPE_SRV_PART: p_adv_data->ad_mask |= ad_type; /* need allocate memory to store UUID list */ p_adv_data->service.num_service = (ad_len - 1)/2; BTM_TRACE_DEBUG1("service UUID list, num = %d", p_adv_data->service.num_service); default: p_cur += (ad_len - 1); break; } len -= (ad_len + 1); } } #endif /******************************************************************************* ** ** Function btm_ble_cache_adv_data ** ** Description Update advertising cache data. ** ** Returns void ** *******************************************************************************/ void btm_ble_cache_adv_data(tBTM_INQ_RESULTS *p_cur, UINT8 data_len, UINT8 *p, UINT8 evt_type) { tBTM_BLE_INQ_CB *p_le_inq_cb = &btm_cb.ble_ctr_cb.inq_var; UINT8 *p_cache; UINT8 length; /* cache adv report/scan response data */ if (evt_type != BTM_BLE_SCAN_RSP_EVT) { p_le_inq_cb->adv_len = 0; memset(p_le_inq_cb->adv_data_cache, 0, BTM_BLE_CACHE_ADV_DATA_MAX); } if (data_len > 0) { p_cache = &p_le_inq_cb->adv_data_cache[p_le_inq_cb->adv_len]; STREAM_TO_UINT8(length, p); while ( length && ((p_le_inq_cb->adv_len + length + 1) <= BTM_BLE_CACHE_ADV_DATA_MAX)) { /* copy from the length byte & data into cache */ memcpy(p_cache, p-1, length+1); /* advance the cache pointer past data */ p_cache += length+1; /* increment cache length */ p_le_inq_cb->adv_len += length+1; /* skip the length of data */ p += length; STREAM_TO_UINT8(length, p); } } /* parse service UUID from adv packet and save it in inq db eir_uuid */ /* TODO */ } /******************************************************************************* ** ** Function btm_ble_is_discoverable ** ** Description check ADV flag to make sure device is discoverable and match ** the search condition ** ** Parameters ** ** Returns void ** *******************************************************************************/ BOOLEAN btm_ble_is_discoverable(BD_ADDR bda, UINT8 evt_type, UINT8 *p) { BOOLEAN is_discoverable = FALSE; UINT8 *p_flag, flag = 0; UINT8 data_len; tBTM_INQ_PARMS *p_cond = &btm_cb.btm_inq_vars.inqparms; STREAM_TO_UINT8 (data_len, p); /* for observer, always "discoverable */ if (btm_cb.ble_ctr_cb.inq_var.proc_mode == BTM_BLE_OBSERVE || (btm_cb.ble_ctr_cb.inq_var.proc_mode == BTM_BLE_SELECT_SCAN && btm_cb.ble_ctr_cb.bg_conn_type == BTM_BLE_CONN_SELECTIVE)) return TRUE; /* does not match filter condition */ if (p_cond->filter_cond_type == BTM_FILTER_COND_BD_ADDR && memcmp(bda, p_cond->filter_cond.bdaddr_cond, BD_ADDR_LEN) != 0) { BTM_TRACE_DEBUG0("BD ADDR does not meet filter condition"); return FALSE; } /* scan response does not include the flag */ if (evt_type == BTM_BLE_SCAN_RSP_EVT) return FALSE; if (data_len > BTM_BLE_ADV_DATA_LEN_MAX) { BTM_TRACE_WARNING1("ADV data too long %d. discard", data_len); return FALSE; } if (data_len != 0) { if ((p_flag = BTM_CheckAdvData(p, BTM_BLE_AD_TYPE_FLAG, &data_len)) != NULL) { flag = * p_flag; if ((btm_cb.ble_ctr_cb.inq_var.proc_mode == BTM_BLE_GENERAL_INQUIRY) && (flag & (BTM_BLE_LIMIT_DISC_FLAG|BTM_BLE_GEN_DISC_FLAG)) != 0) { BTM_TRACE_DEBUG0("Find Generable Discoverable device"); is_discoverable = TRUE; } else if (btm_cb.ble_ctr_cb.inq_var.proc_mode == BTM_BLE_LIMITED_INQUIRY && (flag & BTM_BLE_LIMIT_DISC_FLAG) != 0) { BTM_TRACE_DEBUG0("Find limited discoverable device"); is_discoverable = TRUE; } } } if (!is_discoverable) { BTM_TRACE_ERROR1("discoverable flag not desired: %d", flag); } return is_discoverable; } /******************************************************************************* ** ** Function btm_ble_update_inq_result ** ** Description Update adv packet information into inquiry result. ** ** Parameters ** ** Returns void ** *******************************************************************************/ BOOLEAN btm_ble_update_inq_result(tINQ_DB_ENT *p_i, UINT8 addr_type, UINT8 evt_type, UINT8 *p) { BOOLEAN to_report = TRUE; tBTM_INQ_RESULTS *p_cur = &p_i->inq_info.results; UINT8 len; UINT8 *p_flag; tBTM_INQUIRY_VAR_ST *p_inq = &btm_cb.btm_inq_vars; UINT8 data_len, rssi; tBTM_BLE_INQ_CB *p_le_inq_cb = &btm_cb.ble_ctr_cb.inq_var; UINT8 *p1; STREAM_TO_UINT8 (data_len, p); if (data_len > BTM_BLE_ADV_DATA_LEN_MAX) { BTM_TRACE_WARNING1("EIR data too long %d. discard", data_len); return FALSE; } btm_ble_cache_adv_data(p_cur, data_len, p, evt_type); p1 = (p + data_len); STREAM_TO_UINT8 (rssi, p1); /* Save the info */ p_cur->inq_result_type = BTM_INQ_RESULT_BLE; p_cur->ble_addr_type = addr_type; p_cur->rssi = rssi; /* active scan, always wait until get scan_rsp to report the result */ if ((btm_cb.ble_ctr_cb.inq_var.scan_type == BTM_BLE_SCAN_MODE_ACTI && (evt_type == BTM_BLE_CONNECT_EVT || evt_type == BTM_BLE_DISCOVER_EVT))) { p_i->scan_rsp = FALSE; to_report = FALSE; } else p_i->scan_rsp = TRUE; if (p_i->inq_count != p_inq->inq_counter) p_cur->device_type = BT_DEVICE_TYPE_BLE; else p_cur->device_type |= BT_DEVICE_TYPE_BLE; if (evt_type != BTM_BLE_SCAN_RSP_EVT) p_cur->ble_evt_type = evt_type; p_i->inq_count = p_inq->inq_counter; /* Mark entry for current inquiry */ if (p_le_inq_cb->adv_len != 0) { if ((p_flag = BTM_CheckAdvData(p_le_inq_cb->adv_data_cache, BTM_BLE_AD_TYPE_FLAG, &len)) != NULL) p_cur->flag = * p_flag; } /* if BR/EDR not supported is not set, assume is a DUMO device */ if ((p_cur->flag & BTM_BLE_BREDR_NOT_SPT) == 0) { BTM_TRACE_ERROR0("BR/EDR NOT support bit not set, treat as DUMO"); p_cur->device_type |= BT_DEVICE_TYPE_DUMO; } else { BTM_TRACE_DEBUG0("BR/EDR NOT SUPPORT bit set, LE only device"); } return to_report; } /******************************************************************************* ** ** Function btm_send_sel_conn_callback ** ** Description send selection connection request callback. ** ** Parameters ** ** Returns void ** *******************************************************************************/ void btm_send_sel_conn_callback(BD_ADDR remote_bda, UINT8 evt_type, UINT8 *p_data, UINT8 addr_type) { UINT8 data_len, len; UINT8 *p_dev_name, remname[31] = {0}; if (btm_cb.ble_ctr_cb.p_select_cback == NULL || /* non-connectable device */ (evt_type != BTM_BLE_EVT_CONN_ADV && evt_type != BTM_BLE_EVT_CONN_DIR_ADV)) return; STREAM_TO_UINT8 (data_len, p_data); /* get the device name if exist in ADV data */ if (data_len != 0) { p_dev_name = BTM_CheckAdvData(p_data, BTM_BLE_AD_TYPE_NAME_CMPL, &len); if (p_dev_name == NULL) p_dev_name = BTM_CheckAdvData(p_data, BTM_BLE_AD_TYPE_NAME_SHORT, &len); if (p_dev_name) memcpy(remname, p_dev_name, len); } /* allow connection */ if ((* btm_cb.ble_ctr_cb.p_select_cback)(remote_bda, remname)) { /* terminate selective connection, initiate connection */ btm_ble_initiate_select_conn(remote_bda); } } /******************************************************************************* ** ** Function btm_ble_resolve_random_addr_cmpl ** ** Description resolve random address complete callback. ** ** Returns void ** *******************************************************************************/ static void btm_ble_resolve_random_addr_cmpl(void * p_rec, void *p) { tBTM_SEC_DEV_REC *match_rec = (tBTM_SEC_DEV_REC *) p_rec; UINT8 addr_type = BLE_ADDR_RANDOM; BD_ADDR bda; UINT8 *pp = (UINT8 *)p + 1; UINT8 evt_type; BTM_TRACE_EVENT0 ("btm_ble_resolve_random_addr_cmpl "); STREAM_TO_UINT8 (evt_type, pp); STREAM_TO_UINT8 (addr_type, pp); STREAM_TO_BDADDR (bda, pp); if (match_rec) { BTM_TRACE_ERROR0("Random match"); memcpy(match_rec->ble.cur_rand_addr, bda, BD_ADDR_LEN); memcpy(bda, match_rec->bd_addr, BD_ADDR_LEN); } else { BTM_TRACE_ERROR0("Random unmatch"); } btm_ble_process_adv_pkt_cont(bda, addr_type, evt_type, pp); return; } /******************************************************************************* ** ** Function btm_ble_process_adv_pkt ** ** Description This function is called when adv packet report events are ** received from the device. It updates the inquiry database. ** If the inquiry database is full, the oldest entry is discarded. ** ** Parameters ** ** Returns void ** *******************************************************************************/ void btm_ble_process_adv_pkt (UINT8 *p_data) { BD_ADDR bda; UINT8 evt_type = 0, *p = p_data; UINT8 addr_type = 0; BTM_TRACE_EVENT0 ("btm_ble_process_adv_pkt "); /* always get one device at a time */ p ++; /* Extract inquiry results */ STREAM_TO_UINT8 (evt_type, p); STREAM_TO_UINT8 (addr_type, p); STREAM_TO_BDADDR (bda, p); #ifdef BTM_BLE_PC_ADV_TEST_MODE // For general stack code (e.g. BTInsight testing), we simply do not define it to exclude or set it to TRUE to include if (BTM_BLE_PC_ADV_TEST_MODE) // For stack component, it is always defined and maps to a global variable g_bDraculaAdvertisingMode { if (btm_cb.ble_ctr_cb.p_scan_req_cback) (*btm_cb.ble_ctr_cb.p_scan_req_cback)(bda, addr_type, evt_type); } #endif /* Only process the results if the inquiry is still active */ if (!btm_cb.btm_inq_vars.inq_active && (btm_cb.ble_ctr_cb.bg_conn_type != BTM_BLE_CONN_SELECTIVE || /* or selective auto connection is active */ btm_cb.ble_ctr_cb.p_select_cback == NULL)) return; #if SMP_INCLUDED == TRUE if (addr_type == BLE_ADDR_RANDOM && BTM_BLE_IS_RESOLVE_BDA(bda)) { btm_ble_resolve_random_addr(bda, btm_ble_resolve_random_addr_cmpl, p_data); } else #endif btm_ble_process_adv_pkt_cont(bda, addr_type, evt_type, p); } /******************************************************************************* ** ** Function btm_ble_process_adv_pkt_cont ** ** Description This function is called after random address resolution is ** done, and proceed to process adv packet. ** ** Parameters ** ** Returns void ** *******************************************************************************/ static void btm_ble_process_adv_pkt_cont(BD_ADDR bda, UINT8 addr_type, UINT8 evt_type, UINT8 *p) { tINQ_DB_ENT *p_i; BOOLEAN to_report = FALSE; tBTM_INQUIRY_VAR_ST *p_inq = &btm_cb.btm_inq_vars; tBTM_INQ_RESULTS_CB *p_inq_results_cb = p_inq->p_inq_results_cb; tBTM_BLE_INQ_CB *p_le_inq_cb = &btm_cb.ble_ctr_cb.inq_var; p_i = btm_inq_db_find (bda); /* Check if this address has already been processed for this inquiry */ if (btm_inq_find_bdaddr(bda)) { /* never been report as an LE device */ if ((p_i && (!(p_i->inq_info.results.device_type & BT_DEVICE_TYPE_BLE) || /* scan repsonse to be updated */ (!p_i->scan_rsp))) || btm_cb.ble_ctr_cb.inq_var.proc_mode == BTM_BLE_OBSERVE) { BTM_TRACE_DEBUG0("update new BLE information "); to_report = TRUE; } else { BTM_TRACE_DEBUG0("LE in le_bd_db already"); /* if yes, skip it */ return; /* assumption: one result per event */ } } else /* not been processed int his round */ { BTM_TRACE_DEBUG0("new LE BD_ADDR"); to_report = TRUE; } /* If existing entry, use that, else get a new one (possibly reusing the oldest) */ if (p_i == NULL) { if (btm_ble_is_discoverable(bda, evt_type, p)) { if ((p_i = btm_inq_db_new (bda)) != NULL) { p_inq->inq_cmpl_info.num_resp++; BTM_TRACE_DEBUG0("adv pkt process: new record is added into inq db"); to_report = TRUE; } else return; } else { BTM_TRACE_ERROR0("discard adv pkt"); return; } } else if (p_i->inq_count != p_inq->inq_counter) /* first time seen in this inquiry */ { p_inq->inq_cmpl_info.num_resp++; } /* update the LE device information in inquiry database */ if (to_report) { to_report = btm_ble_update_inq_result(p_i, addr_type, evt_type, p); } #if BTM_USE_INQ_RESULTS_FILTER == TRUE /* If the number of responses found and limited, issue a cancel inquiry */ if (p_inq->inqparms.max_resps && p_inq->inq_cmpl_info.num_resp == p_inq->inqparms.max_resps) { /* new device */ if (p_i == NULL || (/* assume a DUMO device, BR/EDR inquiry is always active */ p_i && p_i->inq_info.results.device_type == BT_DEVICE_TYPE_BLE && p_i->scan_rsp)) { BTM_TRACE_WARNING0("INQ RES: Extra Response Received...cancelling inquiry.."); if (!(p_inq->inq_active & BTM_PERIODIC_INQUIRY_ACTIVE) ) btsnd_hcic_inq_cancel(); /* stop LE scan now */ btm_ble_stop_scan(); #if BTM_BUSY_LEVEL_CHANGE_INCLUDED == TRUE btm_acl_update_busy_level (BTM_BLI_INQ_DONE_EVT); #endif } } #endif /* background connection in selective connection mode */ if (btm_cb.ble_ctr_cb.bg_conn_type == BTM_BLE_CONN_SELECTIVE) { btm_send_sel_conn_callback(bda, evt_type, p, addr_type); } else if (p_inq_results_cb && to_report) { BTM_TRACE_DEBUG0("BTMINQ LE: Found devices, send callback btm_inqrslt_cb"); if (p_inq->inq_active) (p_inq_results_cb)((tBTM_INQ_RESULTS *) &p_i->inq_info.results, p_le_inq_cb->adv_data_cache); } } /******************************************************************************* ** ** Function btm_ble_stop_scan ** ** Description Stop the BLE scan. ** ** Returns void ** *******************************************************************************/ void btm_ble_stop_scan(void) { tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var; tBTM_INQUIRY_VAR_ST *p_inq = &btm_cb.btm_inq_vars; BTM_TRACE_EVENT0 ("btm_ble_stop_scan "); btu_stop_timer (&p_cb->inq_timer_ent); /* Clear the inquiry callback if set */ p_cb->scan_type = BTM_BLE_SCAN_MODE_NONE; p_cb->proc_mode = BTM_BLE_INQUIRY_NONE; /* stop discovery now */ btsnd_hcic_ble_set_scan_enable (BTM_BLE_SCAN_DISABLE, BTM_BLE_DUPLICATE_ENABLE); /* If we have a callback registered for inquiry complete, call it */ BTM_TRACE_DEBUG2 ("BTM Inq Compl Callback: status 0x%02x, num results %d", p_inq->inq_cmpl_info.status, p_inq->inq_cmpl_info.num_resp); btm_update_scanner_filter_policy(SP_ADV_ALL); btm_process_inq_complete(HCI_SUCCESS, (UINT8)(p_inq->inqparms.mode & BTM_BLE_INQUIRY_MASK)); } /******************************************************************************* ** ** Function btm_ble_stop_adv ** ** Description Stop the BLE advertising. ** ** Returns void ** *******************************************************************************/ void btm_ble_stop_adv(void) { BTM_TRACE_EVENT0 (" btm_ble_stop_adv"); if (btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_DISABLE)) { btm_cb.ble_ctr_cb.inq_var.adv_mode = BTM_BLE_ADV_DISABLE; } } /******************************************************************************* ** ** Function btm_ble_timeout ** ** Description Called when BTM BLE inquiry timer expires ** ** Returns void ** *******************************************************************************/ void btm_ble_timeout(TIMER_LIST_ENT *p_tle) { BTM_TRACE_EVENT0 ("btm_ble_timeout"); switch (p_tle->event) { case BTU_TTYPE_BLE_INQUIRY: btm_ble_stop_scan(); break; case BTU_TTYPE_BLE_GAP_LIM_DISC: /* lim_timeout expiried, limited discovery should exit now */ btm_ble_update_adv_flag(BTM_BLE_NON_LIMIT_DISC_FLAG); btm_ble_stop_adv(); break; case BTU_TTYPE_BLE_RANDOM_ADDR: if (btm_cb.ble_ctr_cb.inq_var.adv_mode == BTM_BLE_ADV_ENABLE && btm_cb.ble_ctr_cb.inq_var.own_addr_type == BLE_ADDR_RANDOM) { /* refresh the random addr */ btm_gen_resolvable_private_addr(); } break; } } /******************************************************************************* ** ** Function btm_ble_connected ** ** Description This function is when a LE connection to the peer device is ** establsihed ** ** Returns void ** *******************************************************************************/ void btm_ble_connected (UINT8 *bda, UINT16 handle, UINT8 enc_mode, UINT8 role) { tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bda); tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; BTM_TRACE_EVENT0 ("btm_ble_connected"); /* Commenting out trace due to obf/compilation problems. */ #if (BT_USE_TRACES == TRUE) if (p_dev_rec) { BTM_TRACE_EVENT4 ("Security Manager: btm_sec_connected : handle:%d enc_mode:%d bda:%x RName:%s", handle, enc_mode, (bda[2]<<24)+(bda[3]<<16)+(bda[4]<<8)+bda[5], p_dev_rec->sec_bd_name); BTM_TRACE_DEBUG1 ("btm_ble_connected sec_flags=0x%x",p_dev_rec->sec_flags); } else { BTM_TRACE_EVENT3 ("Security Manager: btm_sec_connected: handle:%d enc_mode:%d bda:%x ", handle, enc_mode, (bda[2]<<24)+(bda[3]<<16)+(bda[4]<<8)+bda[5]); } #endif if (!p_dev_rec) { /* There is no device record for new connection. Allocate one */ p_dev_rec = btm_sec_alloc_dev (bda); } else /* Update the timestamp for this device */ { p_dev_rec->timestamp = btm_cb.dev_rec_count++; } p_dev_rec->device_type = BT_DEVICE_TYPE_BLE; p_dev_rec->hci_handle = handle; if (role == HCI_ROLE_MASTER) p_dev_rec->role_master = TRUE; p_cb->inq_var.adv_mode = BTM_BLE_ADV_DISABLE; return; } /******************************************************************************* ** ** Function btm_ble_read_remote_features_complete ** ** Description This function is called when the command complete message ** is received from the HCI for the read LE remote feature supported ** complete event. ** ** Returns void ** *******************************************************************************/ void btm_ble_read_remote_features_complete(UINT8 *p) { tACL_CONN *p_acl_cb = &btm_cb.acl_db[0]; UINT8 size; UINT16 handle; int xx, yy; tBTM_SEC_DEV_REC *p_dev_rec; BTM_TRACE_EVENT0 ("btm_ble_read_remote_features_complete "); STREAM_TO_UINT16 (handle, p); STREAM_TO_UINT8 (size, p); /* Look up the connection by handle and copy features */ for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p_acl_cb++) { if ((p_acl_cb->in_use) && (p_acl_cb->hci_handle == handle)) { for (yy = 0; yy < BD_FEATURES_LEN; yy++) STREAM_TO_UINT8 (p_acl_cb->features[yy], p); p_dev_rec = btm_find_dev_by_handle (handle); if (!p_dev_rec) { /* Get a new device; might be doing dedicated bonding */ p_dev_rec = btm_find_or_alloc_dev (p_acl_cb->remote_addr); } memcpy (p_dev_rec->features, p_acl_cb->features, BD_FEATURES_LEN); break; } } } /******************************************************************************* ** ** Function btm_ble_write_adv_enable_complete ** ** Description This function process the write adv enable command complete. ** ** Returns void ** *******************************************************************************/ void btm_ble_write_adv_enable_complete(UINT8 * p) { tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var; /* if write adv enable/disbale not succeed */ if (*p != HCI_SUCCESS) { /* toggle back the adv mode */ p_cb->adv_mode = !p_cb->adv_mode; } } /******************************************************************************* ** ** Function btm_ble_init ** ** Description Initialize the control block variable values. ** ** Returns void ** *******************************************************************************/ void btm_ble_init (void) { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; BTM_TRACE_EVENT0 ("btm_ble_init "); memset(p_cb, 0, sizeof(tBTM_BLE_CB)); p_cb->inq_var.adv_mode = BTM_BLE_ADV_DISABLE; p_cb->inq_var.scan_type = BTM_BLE_SCAN_MODE_NONE; p_cb->inq_var.adv_chnl_map = BTM_BLE_DEFAULT_ADV_CHNL_MAP; p_cb->inq_var.afp = BTM_BLE_DEFAULT_AFP; p_cb->inq_var.sfp = BTM_BLE_DEFAULT_SFP; p_cb->inq_var.connectable_mode = BTM_BLE_NON_CONNECTABLE; p_cb->inq_var.discoverable_mode = BTM_BLE_NON_DISCOVERABLE; /* for background connection, reset connection params to be undefined */ p_cb->scan_int = p_cb->scan_win = BTM_BLE_CONN_PARAM_UNDEF; p_cb->inq_var.evt_type = BTM_BLE_UNKNOWN_EVT; } #endif /* BLE_INCLUDED */