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PL286/system/bt/stack/btm/btm_inq.cc

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/******************************************************************************
*
* Copyright (C) 1999-2014 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 that handle inquiries. These include
* setting discoverable mode, controlling the mode of the Baseband, and
* maintaining a small database of inquiry responses, with API for people
* to browse it.
*
******************************************************************************/
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "device/include/controller.h"
#include "osi/include/osi.h"
#include "osi/include/time.h"
#include "advertise_data_parser.h"
#include "bt_common.h"
#include "bt_types.h"
#include "btm_api.h"
#include "btm_int.h"
#include "btu.h"
#include "hcidefs.h"
#include "hcimsgs.h"
/* 3 second timeout waiting for responses */
#define BTM_INQ_REPLY_TIMEOUT_MS (3 * 1000)
/* TRUE to enable DEBUG traces for btm_inq */
#ifndef BTM_INQ_DEBUG
#define BTM_INQ_DEBUG FALSE
#endif
/******************************************************************************/
/* L O C A L D A T A D E F I N I T I O N S */
/******************************************************************************/
static const LAP general_inq_lap = {0x9e, 0x8b, 0x33};
static const LAP limited_inq_lap = {0x9e, 0x8b, 0x00};
const uint16_t BTM_EIR_UUID_LKUP_TBL[BTM_EIR_MAX_SERVICES] = {
UUID_SERVCLASS_SERVICE_DISCOVERY_SERVER,
/* UUID_SERVCLASS_BROWSE_GROUP_DESCRIPTOR, */
/* UUID_SERVCLASS_PUBLIC_BROWSE_GROUP, */
UUID_SERVCLASS_SERIAL_PORT, UUID_SERVCLASS_LAN_ACCESS_USING_PPP,
UUID_SERVCLASS_DIALUP_NETWORKING, UUID_SERVCLASS_IRMC_SYNC,
UUID_SERVCLASS_OBEX_OBJECT_PUSH, UUID_SERVCLASS_OBEX_FILE_TRANSFER,
UUID_SERVCLASS_IRMC_SYNC_COMMAND, UUID_SERVCLASS_HEADSET,
UUID_SERVCLASS_CORDLESS_TELEPHONY, UUID_SERVCLASS_AUDIO_SOURCE,
UUID_SERVCLASS_AUDIO_SINK, UUID_SERVCLASS_AV_REM_CTRL_TARGET,
/* UUID_SERVCLASS_ADV_AUDIO_DISTRIBUTION, */
UUID_SERVCLASS_AV_REMOTE_CONTROL,
/* UUID_SERVCLASS_VIDEO_CONFERENCING, */
UUID_SERVCLASS_INTERCOM, UUID_SERVCLASS_FAX,
UUID_SERVCLASS_HEADSET_AUDIO_GATEWAY,
/* UUID_SERVCLASS_WAP, */
/* UUID_SERVCLASS_WAP_CLIENT, */
UUID_SERVCLASS_PANU, UUID_SERVCLASS_NAP, UUID_SERVCLASS_GN,
UUID_SERVCLASS_DIRECT_PRINTING,
/* UUID_SERVCLASS_REFERENCE_PRINTING, */
UUID_SERVCLASS_IMAGING, UUID_SERVCLASS_IMAGING_RESPONDER,
UUID_SERVCLASS_IMAGING_AUTO_ARCHIVE, UUID_SERVCLASS_IMAGING_REF_OBJECTS,
UUID_SERVCLASS_HF_HANDSFREE, UUID_SERVCLASS_AG_HANDSFREE,
UUID_SERVCLASS_DIR_PRT_REF_OBJ_SERVICE,
/* UUID_SERVCLASS_REFLECTED_UI, */
UUID_SERVCLASS_BASIC_PRINTING, UUID_SERVCLASS_PRINTING_STATUS,
UUID_SERVCLASS_HUMAN_INTERFACE, UUID_SERVCLASS_CABLE_REPLACEMENT,
UUID_SERVCLASS_HCRP_PRINT, UUID_SERVCLASS_HCRP_SCAN,
/* UUID_SERVCLASS_COMMON_ISDN_ACCESS, */
/* UUID_SERVCLASS_VIDEO_CONFERENCING_GW, */
/* UUID_SERVCLASS_UDI_MT, */
/* UUID_SERVCLASS_UDI_TA, */
/* UUID_SERVCLASS_VCP, */
UUID_SERVCLASS_SAP, UUID_SERVCLASS_PBAP_PCE, UUID_SERVCLASS_PBAP_PSE,
UUID_SERVCLASS_PHONE_ACCESS, UUID_SERVCLASS_HEADSET_HS,
UUID_SERVCLASS_PNP_INFORMATION,
/* UUID_SERVCLASS_GENERIC_NETWORKING, */
/* UUID_SERVCLASS_GENERIC_FILETRANSFER, */
/* UUID_SERVCLASS_GENERIC_AUDIO, */
/* UUID_SERVCLASS_GENERIC_TELEPHONY, */
/* UUID_SERVCLASS_UPNP_SERVICE, */
/* UUID_SERVCLASS_UPNP_IP_SERVICE, */
/* UUID_SERVCLASS_ESDP_UPNP_IP_PAN, */
/* UUID_SERVCLASS_ESDP_UPNP_IP_LAP, */
/* UUID_SERVCLASS_ESDP_UPNP_IP_L2CAP, */
UUID_SERVCLASS_VIDEO_SOURCE, UUID_SERVCLASS_VIDEO_SINK,
/* UUID_SERVCLASS_VIDEO_DISTRIBUTION */
UUID_SERVCLASS_MESSAGE_ACCESS, UUID_SERVCLASS_MESSAGE_NOTIFICATION,
UUID_SERVCLASS_HDP_SOURCE, UUID_SERVCLASS_HDP_SINK};
/******************************************************************************/
/* L O C A L F U N C T I O N P R O T O T Y P E S */
/******************************************************************************/
static void btm_initiate_inquiry(tBTM_INQUIRY_VAR_ST* p_inq);
static tBTM_STATUS btm_set_inq_event_filter(uint8_t filter_cond_type,
tBTM_INQ_FILT_COND* p_filt_cond);
static void btm_clr_inq_result_flt(void);
static uint8_t btm_convert_uuid_to_eir_service(uint16_t uuid16);
static void btm_set_eir_uuid(uint8_t* p_eir, tBTM_INQ_RESULTS* p_results);
static const uint8_t* btm_eir_get_uuid_list(uint8_t* p_eir, size_t eir_len,
uint8_t uuid_size,
uint8_t* p_num_uuid,
uint8_t* p_uuid_list_type);
static uint16_t btm_convert_uuid_to_uuid16(const uint8_t* p_uuid,
uint8_t uuid_size);
/*******************************************************************************
*
* Function BTM_SetDiscoverability
*
* Description This function is called to set the device into or out of
* discoverable mode. Discoverable mode means inquiry
* scans are enabled. If a value of '0' is entered for window
* or interval, the default values are used.
*
* Returns BTM_SUCCESS if successful
* BTM_BUSY if a setting of the filter is already in progress
* BTM_NO_RESOURCES if couldn't get a memory pool buffer
* BTM_ILLEGAL_VALUE if a bad parameter was detected
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS BTM_SetDiscoverability(uint16_t inq_mode, uint16_t window,
uint16_t interval) {
uint8_t scan_mode = 0;
uint16_t service_class;
uint8_t* p_cod;
uint8_t major, minor;
DEV_CLASS cod;
LAP temp_lap[2];
bool is_limited;
bool cod_limited;
BTM_TRACE_API("BTM_SetDiscoverability");
if (controller_get_interface()->supports_ble()) {
if (btm_ble_set_discoverability((uint16_t)(inq_mode)) == BTM_SUCCESS) {
btm_cb.btm_inq_vars.discoverable_mode &= (~BTM_BLE_DISCOVERABLE_MASK);
btm_cb.btm_inq_vars.discoverable_mode |=
(inq_mode & BTM_BLE_DISCOVERABLE_MASK);
}
}
inq_mode &= ~BTM_BLE_DISCOVERABLE_MASK;
/*** Check mode parameter ***/
if (inq_mode > BTM_MAX_DISCOVERABLE) return (BTM_ILLEGAL_VALUE);
/* Make sure the controller is active */
if (!controller_get_interface()->get_is_ready()) return (BTM_DEV_RESET);
/* If the window and/or interval is '0', set to default values */
if (!window) window = BTM_DEFAULT_DISC_WINDOW;
if (!interval) interval = BTM_DEFAULT_DISC_INTERVAL;
BTM_TRACE_API(
"BTM_SetDiscoverability: mode %d [NonDisc-0, Lim-1, Gen-2], window "
"0x%04x, interval 0x%04x",
inq_mode, window, interval);
/*** Check for valid window and interval parameters ***/
/*** Only check window and duration if mode is connectable ***/
if (inq_mode != BTM_NON_DISCOVERABLE) {
/* window must be less than or equal to interval */
if (window < HCI_MIN_INQUIRYSCAN_WINDOW ||
window > HCI_MAX_INQUIRYSCAN_WINDOW ||
interval < HCI_MIN_INQUIRYSCAN_INTERVAL ||
interval > HCI_MAX_INQUIRYSCAN_INTERVAL || window > interval) {
return (BTM_ILLEGAL_VALUE);
}
}
/* Set the IAC if needed */
if (inq_mode != BTM_NON_DISCOVERABLE) {
if (inq_mode & BTM_LIMITED_DISCOVERABLE) {
/* Use the GIAC and LIAC codes for limited discoverable mode */
memcpy(temp_lap[0], limited_inq_lap, LAP_LEN);
memcpy(temp_lap[1], general_inq_lap, LAP_LEN);
btsnd_hcic_write_cur_iac_lap(2, (LAP * const)temp_lap);
} else {
btsnd_hcic_write_cur_iac_lap(1, (LAP * const) & general_inq_lap);
}
scan_mode |= HCI_INQUIRY_SCAN_ENABLED;
}
/* Send down the inquiry scan window and period if changed */
if ((window != btm_cb.btm_inq_vars.inq_scan_window) ||
(interval != btm_cb.btm_inq_vars.inq_scan_period)) {
btsnd_hcic_write_inqscan_cfg(interval, window);
btm_cb.btm_inq_vars.inq_scan_window = window;
btm_cb.btm_inq_vars.inq_scan_period = interval;
}
if (btm_cb.btm_inq_vars.connectable_mode & BTM_CONNECTABLE_MASK)
scan_mode |= HCI_PAGE_SCAN_ENABLED;
btsnd_hcic_write_scan_enable(scan_mode);
btm_cb.btm_inq_vars.discoverable_mode &= (~BTM_DISCOVERABLE_MASK);
btm_cb.btm_inq_vars.discoverable_mode |= inq_mode;
/* Change the service class bit if mode has changed */
p_cod = BTM_ReadDeviceClass();
BTM_COD_SERVICE_CLASS(service_class, p_cod);
is_limited = (inq_mode & BTM_LIMITED_DISCOVERABLE) ? true : false;
cod_limited = (service_class & BTM_COD_SERVICE_LMTD_DISCOVER) ? true : false;
if (is_limited ^ cod_limited) {
BTM_COD_MINOR_CLASS(minor, p_cod);
BTM_COD_MAJOR_CLASS(major, p_cod);
if (is_limited)
service_class |= BTM_COD_SERVICE_LMTD_DISCOVER;
else
service_class &= ~BTM_COD_SERVICE_LMTD_DISCOVER;
FIELDS_TO_COD(cod, minor, major, service_class);
(void)BTM_SetDeviceClass(cod);
}
return (BTM_SUCCESS);
}
/*******************************************************************************
*
* Function BTM_SetInquiryScanType
*
* Description This function is called to set the iquiry scan-type to
* standard or interlaced.
*
* Returns BTM_SUCCESS if successful
* BTM_MODE_UNSUPPORTED if not a 1.2 device
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS BTM_SetInquiryScanType(uint16_t scan_type) {
BTM_TRACE_API("BTM_SetInquiryScanType");
if (scan_type != BTM_SCAN_TYPE_STANDARD &&
scan_type != BTM_SCAN_TYPE_INTERLACED)
return (BTM_ILLEGAL_VALUE);
/* whatever app wants if device is not 1.2 scan type should be STANDARD */
if (!controller_get_interface()->supports_interlaced_inquiry_scan())
return (BTM_MODE_UNSUPPORTED);
/* Check for scan type if configuration has been changed */
if (scan_type != btm_cb.btm_inq_vars.inq_scan_type) {
if (BTM_IsDeviceUp()) {
btsnd_hcic_write_inqscan_type((uint8_t)scan_type);
btm_cb.btm_inq_vars.inq_scan_type = scan_type;
} else
return (BTM_WRONG_MODE);
}
return (BTM_SUCCESS);
}
/*******************************************************************************
*
* Function BTM_SetPageScanType
*
* Description This function is called to set the page scan-type to
* standard or interlaced.
*
* Returns BTM_SUCCESS if successful
* BTM_MODE_UNSUPPORTED if not a 1.2 device
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS BTM_SetPageScanType(uint16_t scan_type) {
BTM_TRACE_API("BTM_SetPageScanType");
if (scan_type != BTM_SCAN_TYPE_STANDARD &&
scan_type != BTM_SCAN_TYPE_INTERLACED)
return (BTM_ILLEGAL_VALUE);
/* whatever app wants if device is not 1.2 scan type should be STANDARD */
if (!controller_get_interface()->supports_interlaced_inquiry_scan())
return (BTM_MODE_UNSUPPORTED);
/* Check for scan type if configuration has been changed */
if (scan_type != btm_cb.btm_inq_vars.page_scan_type) {
if (BTM_IsDeviceUp()) {
btsnd_hcic_write_pagescan_type((uint8_t)scan_type);
btm_cb.btm_inq_vars.page_scan_type = scan_type;
} else
return (BTM_WRONG_MODE);
}
return (BTM_SUCCESS);
}
/*******************************************************************************
*
* Function BTM_SetInquiryMode
*
* Description This function is called to set standard or with RSSI
* mode of the inquiry for local device.
*
* Output Params: mode - standard, with RSSI, extended
*
* Returns BTM_SUCCESS if successful
* BTM_NO_RESOURCES if couldn't get a memory pool buffer
* BTM_ILLEGAL_VALUE if a bad parameter was detected
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS BTM_SetInquiryMode(uint8_t mode) {
const controller_t* controller = controller_get_interface();
BTM_TRACE_API("BTM_SetInquiryMode");
if (mode == BTM_INQ_RESULT_STANDARD) {
/* mandatory mode */
} else if (mode == BTM_INQ_RESULT_WITH_RSSI) {
if (!controller->supports_rssi_with_inquiry_results())
return (BTM_MODE_UNSUPPORTED);
} else if (mode == BTM_INQ_RESULT_EXTENDED) {
if (!controller->supports_extended_inquiry_response())
return (BTM_MODE_UNSUPPORTED);
} else
return (BTM_ILLEGAL_VALUE);
if (!BTM_IsDeviceUp()) return (BTM_WRONG_MODE);
btsnd_hcic_write_inquiry_mode(mode);
return (BTM_SUCCESS);
}
/*******************************************************************************
*
* Function BTM_ReadDiscoverability
*
* Description This function is called to read the current discoverability
* mode of the device.
*
* Output Params: p_window - current inquiry scan duration
* p_interval - current inquiry scan interval
*
* Returns BTM_NON_DISCOVERABLE, BTM_LIMITED_DISCOVERABLE, or
* BTM_GENERAL_DISCOVERABLE
*
******************************************************************************/
uint16_t BTM_ReadDiscoverability(uint16_t* p_window, uint16_t* p_interval) {
BTM_TRACE_API("BTM_ReadDiscoverability");
if (p_window) *p_window = btm_cb.btm_inq_vars.inq_scan_window;
if (p_interval) *p_interval = btm_cb.btm_inq_vars.inq_scan_period;
return (btm_cb.btm_inq_vars.discoverable_mode);
}
/*******************************************************************************
*
* Function BTM_SetPeriodicInquiryMode
*
* Description This function is called to set the device periodic inquiry
* mode. If the duration is zero, the periodic inquiry mode is
* cancelled.
*
* Note: We currently do not allow concurrent inquiry and
* periodic inquiry.
*
* Parameters: p_inqparms - pointer to the inquiry information
* mode - GENERAL or LIMITED inquiry
* duration - length in 1.28 sec intervals (If '0', the
* inquiry is CANCELLED)
* max_resps - maximum amount of devices to search for
* before ending the inquiry
* filter_cond_type - BTM_CLR_INQUIRY_FILTER,
* BTM_FILTER_COND_DEVICE_CLASS, or
* BTM_FILTER_COND_BD_ADDR
* filter_cond - value for the filter (based on
* filter_cond_type)
*
* max_delay - maximum amount of time between successive
* inquiries
* min_delay - minimum amount of time between successive
* inquiries
* p_results_cb - callback returning pointer to results
* (tBTM_INQ_RESULTS)
*
* 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_SetPeriodicInquiryMode(tBTM_INQ_PARMS* p_inqparms,
uint16_t max_delay, uint16_t min_delay,
tBTM_INQ_RESULTS_CB* p_results_cb) {
tBTM_STATUS status;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
BTM_TRACE_API(
"BTM_SetPeriodicInquiryMode: mode: %d, dur: %d, rsps: %d, flt: %d, min: "
"%d, max: %d",
p_inqparms->mode, p_inqparms->duration, p_inqparms->max_resps,
p_inqparms->filter_cond_type, min_delay, max_delay);
/*** Make sure the device is ready ***/
if (!BTM_IsDeviceUp()) return (BTM_WRONG_MODE);
/* Only one active inquiry is allowed in this implementation.
Also do not allow an inquiry if the inquiry filter is being updated */
if (p_inq->inq_active || p_inq->inqfilt_active) return (BTM_BUSY);
/* If illegal parameters return false */
if (p_inqparms->mode != BTM_GENERAL_INQUIRY &&
p_inqparms->mode != BTM_LIMITED_INQUIRY)
return (BTM_ILLEGAL_VALUE);
/* Verify the parameters for this command */
if (p_inqparms->duration < BTM_MIN_INQUIRY_LEN ||
p_inqparms->duration > BTM_MAX_INQUIRY_LENGTH ||
min_delay <= p_inqparms->duration ||
min_delay < BTM_PER_INQ_MIN_MIN_PERIOD ||
min_delay > BTM_PER_INQ_MAX_MIN_PERIOD || max_delay <= min_delay ||
max_delay < BTM_PER_INQ_MIN_MAX_PERIOD)
/* max_delay > BTM_PER_INQ_MAX_MAX_PERIOD)*/
/* BTM_PER_INQ_MAX_MAX_PERIOD set to 1's in all bits. Condition resulting in
false always*/
{
return (BTM_ILLEGAL_VALUE);
}
/* Save the inquiry parameters to be used upon the completion of
* setting/clearing the inquiry filter */
p_inq->inqparms = *p_inqparms;
p_inq->per_min_delay = min_delay;
p_inq->per_max_delay = max_delay;
p_inq->inq_cmpl_info.num_resp = 0; /* Clear the results counter */
p_inq->p_inq_results_cb = p_results_cb;
p_inq->inq_active = (uint8_t)(
(p_inqparms->mode == BTM_LIMITED_INQUIRY)
? (BTM_LIMITED_INQUIRY_ACTIVE | BTM_PERIODIC_INQUIRY_ACTIVE)
: (BTM_GENERAL_INQUIRY_ACTIVE | BTM_PERIODIC_INQUIRY_ACTIVE));
/* If a filter is specified, then save it for later and clear the current
filter.
The setting of the filter is done upon completion of clearing of the
previous
filter.
*/
if (p_inqparms->filter_cond_type != BTM_CLR_INQUIRY_FILTER) {
p_inq->state = BTM_INQ_CLR_FILT_STATE;
p_inqparms->filter_cond_type = BTM_CLR_INQUIRY_FILTER;
} else /* The filter is not being used so simply clear it; the inquiry can
start after this operation */
p_inq->state = BTM_INQ_SET_FILT_STATE;
/* Before beginning the inquiry the current filter must be cleared, so
* initiate the command */
status = btm_set_inq_event_filter(p_inqparms->filter_cond_type,
&p_inqparms->filter_cond);
if (status != BTM_CMD_STARTED) {
/* If set filter command is not succesful reset the state */
p_inq->p_inq_results_cb = NULL;
p_inq->state = BTM_INQ_INACTIVE_STATE;
}
return (status);
}
/*******************************************************************************
*
* Function BTM_CancelPeriodicInquiry
*
* Description This function cancels a periodic inquiry
*
* Returns
* BTM_NO_RESOURCES if could not allocate a message buffer
* BTM_SUCCESS - if cancelling the periodic inquiry
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS BTM_CancelPeriodicInquiry(void) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
tBTM_STATUS status = BTM_SUCCESS;
BTM_TRACE_API("BTM_CancelPeriodicInquiry called");
/*** Make sure the device is ready ***/
if (!BTM_IsDeviceUp()) return (BTM_WRONG_MODE);
/* Only cancel if one is active */
if (btm_cb.btm_inq_vars.inq_active & BTM_PERIODIC_INQUIRY_ACTIVE) {
btm_cb.btm_inq_vars.inq_active = BTM_INQUIRY_INACTIVE;
btm_cb.btm_inq_vars.p_inq_results_cb = (tBTM_INQ_RESULTS_CB*)NULL;
btsnd_hcic_exit_per_inq();
/* If the event filter is in progress, mark it so that the processing of the
return
event will be ignored */
if (p_inq->inqfilt_active) p_inq->pending_filt_complete_event++;
p_inq->inqfilt_active = false;
p_inq->inq_counter++;
}
return (status);
}
/*******************************************************************************
*
* Function BTM_SetConnectability
*
* Description This function is called to set the device into or out of
* connectable mode. Discoverable mode means page scans are
* enabled.
*
* Returns BTM_SUCCESS if successful
* BTM_ILLEGAL_VALUE if a bad parameter is detected
* BTM_NO_RESOURCES if could not allocate a message buffer
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS BTM_SetConnectability(uint16_t page_mode, uint16_t window,
uint16_t interval) {
uint8_t scan_mode = 0;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
BTM_TRACE_API("BTM_SetConnectability");
if (controller_get_interface()->supports_ble()) {
if (btm_ble_set_connectability(page_mode) != BTM_SUCCESS) {
return BTM_NO_RESOURCES;
}
p_inq->connectable_mode &= (~BTM_BLE_CONNECTABLE_MASK);
p_inq->connectable_mode |= (page_mode & BTM_BLE_CONNECTABLE_MASK);
}
page_mode &= ~BTM_BLE_CONNECTABLE_MASK;
/*** Check mode parameter ***/
if (page_mode != BTM_NON_CONNECTABLE && page_mode != BTM_CONNECTABLE)
return (BTM_ILLEGAL_VALUE);
/* Make sure the controller is active */
if (!controller_get_interface()->get_is_ready()) return (BTM_DEV_RESET);
/* If the window and/or interval is '0', set to default values */
if (!window) window = BTM_DEFAULT_CONN_WINDOW;
if (!interval) interval = BTM_DEFAULT_CONN_INTERVAL;
BTM_TRACE_API(
"BTM_SetConnectability: mode %d [NonConn-0, Conn-1], window 0x%04x, "
"interval 0x%04x",
page_mode, window, interval);
/*** Check for valid window and interval parameters ***/
/*** Only check window and duration if mode is connectable ***/
if (page_mode == BTM_CONNECTABLE) {
/* window must be less than or equal to interval */
if (window < HCI_MIN_PAGESCAN_WINDOW || window > HCI_MAX_PAGESCAN_WINDOW ||
interval < HCI_MIN_PAGESCAN_INTERVAL ||
interval > HCI_MAX_PAGESCAN_INTERVAL || window > interval) {
return (BTM_ILLEGAL_VALUE);
}
scan_mode |= HCI_PAGE_SCAN_ENABLED;
}
if ((window != p_inq->page_scan_window) ||
(interval != p_inq->page_scan_period)) {
p_inq->page_scan_window = window;
p_inq->page_scan_period = interval;
btsnd_hcic_write_pagescan_cfg(interval, window);
}
/* Keep the inquiry scan as previouosly set */
if (p_inq->discoverable_mode & BTM_DISCOVERABLE_MASK)
scan_mode |= HCI_INQUIRY_SCAN_ENABLED;
btsnd_hcic_write_scan_enable(scan_mode);
p_inq->connectable_mode &= (~BTM_CONNECTABLE_MASK);
p_inq->connectable_mode |= page_mode;
return (BTM_SUCCESS);
}
/*******************************************************************************
*
* Function BTM_ReadConnectability
*
* Description This function is called to read the current discoverability
* mode of the device.
* Output Params p_window - current page scan duration
* p_interval - current time between page scans
*
* Returns BTM_NON_CONNECTABLE or BTM_CONNECTABLE
*
******************************************************************************/
uint16_t BTM_ReadConnectability(uint16_t* p_window, uint16_t* p_interval) {
BTM_TRACE_API("BTM_ReadConnectability");
if (p_window) *p_window = btm_cb.btm_inq_vars.page_scan_window;
if (p_interval) *p_interval = btm_cb.btm_inq_vars.page_scan_period;
return (btm_cb.btm_inq_vars.connectable_mode);
}
/*******************************************************************************
*
* Function BTM_IsInquiryActive
*
* Description This function returns a bit mask of the current inquiry
* state
*
* Returns BTM_INQUIRY_INACTIVE if inactive (0)
* BTM_LIMITED_INQUIRY_ACTIVE if a limted inquiry is active
* BTM_GENERAL_INQUIRY_ACTIVE if a general inquiry is active
* BTM_PERIODIC_INQUIRY_ACTIVE if a periodic inquiry is active
*
******************************************************************************/
uint16_t BTM_IsInquiryActive(void) {
BTM_TRACE_API("BTM_IsInquiryActive");
return (btm_cb.btm_inq_vars.inq_active);
}
/*******************************************************************************
*
* Function BTM_CancelInquiry
*
* Description This function cancels an inquiry if active
*
* Returns BTM_SUCCESS if successful
* BTM_NO_RESOURCES if could not allocate a message buffer
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS BTM_CancelInquiry(void) {
tBTM_STATUS status = BTM_SUCCESS;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
uint8_t active_mode = p_inq->inq_active;
#endif
BTM_TRACE_API("BTM_CancelInquiry called");
/*** Make sure the device is ready ***/
if (!BTM_IsDeviceUp()) return (BTM_WRONG_MODE);
/* Only cancel if not in periodic mode, otherwise the caller should call
* BTM_CancelPeriodicMode */
if ((p_inq->inq_active & BTM_INQUIRY_ACTIVE_MASK) != 0 &&
(!(p_inq->inq_active & BTM_PERIODIC_INQUIRY_ACTIVE))) {
p_inq->inq_active = BTM_INQUIRY_INACTIVE;
p_inq->state = BTM_INQ_INACTIVE_STATE;
p_inq->p_inq_results_cb =
(tBTM_INQ_RESULTS_CB*)NULL; /* Do not notify caller anymore */
p_inq->p_inq_cmpl_cb =
(tBTM_CMPL_CB*)NULL; /* Do not notify caller anymore */
/* If the event filter is in progress, mark it so that the processing of the
return
event will be ignored */
if (p_inq->inqfilt_active) {
p_inq->inqfilt_active = false;
p_inq->pending_filt_complete_event++;
}
/* Initiate the cancel inquiry */
else {
if (((p_inq->inqparms.mode & BTM_BR_INQUIRY_MASK) != 0)
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
&& (active_mode & BTM_BR_INQUIRY_MASK)
#endif
) {
btsnd_hcic_inq_cancel();
}
if (((p_inq->inqparms.mode & BTM_BLE_INQUIRY_MASK) != 0)
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
&& (active_mode & BTM_BLE_INQ_ACTIVE_MASK)
#endif
)
btm_ble_stop_inquiry();
}
/* Do not send the BUSY_LEVEL event yet. Wait for the cancel_complete event
* and then send the BUSY_LEVEL event
* btm_acl_update_busy_level (BTM_BLI_INQ_DONE_EVT);
*/
p_inq->inq_counter++;
btm_clr_inq_result_flt();
}
return (status);
}
/*******************************************************************************
*
* Function BTM_StartInquiry
*
* Description This function is called to start an inquiry.
*
* Parameters: p_inqparms - pointer to the inquiry information
* mode - GENERAL or LIMITED inquiry, BR/LE bit mask
* seperately
* duration - length in 1.28 sec intervals (If '0', the
* inquiry is CANCELLED)
* max_resps - maximum amount of devices to search for
* before ending the inquiry
* filter_cond_type - BTM_CLR_INQUIRY_FILTER,
* BTM_FILTER_COND_DEVICE_CLASS, or
* BTM_FILTER_COND_BD_ADDR
* filter_cond - value for the filter (based on
* filter_cond_type)
*
* p_results_cb - Pointer to the callback routine which gets
* called upon receipt of an inquiry result. If
* this field is NULL, the application is not
* notified.
*
* p_cmpl_cb - Pointer to the callback routine which gets
* called upon completion. If this field is
* NULL, the application is not notified when
* completed.
* Returns tBTM_STATUS
* BTM_CMD_STARTED if successfully initiated
* BTM_BUSY if already in progress
* BTM_ILLEGAL_VALUE if parameter(s) are out of range
* BTM_NO_RESOURCES if could not allocate resources to start
* the command
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS BTM_StartInquiry(tBTM_INQ_PARMS* p_inqparms,
tBTM_INQ_RESULTS_CB* p_results_cb,
tBTM_CMPL_CB* p_cmpl_cb) {
tBTM_STATUS status = BTM_CMD_STARTED;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
BTM_TRACE_API("BTM_StartInquiry: mode: %d, dur: %d, rsps: %d, flt: %d",
p_inqparms->mode, p_inqparms->duration, p_inqparms->max_resps,
p_inqparms->filter_cond_type);
/* Only one active inquiry is allowed in this implementation.
Also do not allow an inquiry if the inquiry filter is being updated */
if (p_inq->inq_active || p_inq->inqfilt_active) {
/*check if LE observe is already running*/
if (p_inq->scan_type == INQ_LE_OBSERVE &&
p_inq->p_inq_ble_results_cb != NULL) {
BTM_TRACE_API("BTM_StartInquiry: LE observe in progress");
p_inq->scan_type = INQ_GENERAL;
p_inq->inq_active = BTM_INQUIRY_INACTIVE;
btm_cb.ble_ctr_cb.inq_var.scan_type = BTM_BLE_SCAN_MODE_NONE;
btm_send_hci_scan_enable(BTM_BLE_SCAN_DISABLE, BTM_BLE_DUPLICATE_ENABLE);
} else {
BTM_TRACE_API("BTM_StartInquiry: return BUSY");
return (BTM_BUSY);
}
} else
p_inq->scan_type = INQ_GENERAL;
/*** Make sure the device is ready ***/
if (!BTM_IsDeviceUp()) return (BTM_WRONG_MODE);
if ((p_inqparms->mode & BTM_BR_INQUIRY_MASK) != BTM_GENERAL_INQUIRY &&
(p_inqparms->mode & BTM_BR_INQUIRY_MASK) != BTM_LIMITED_INQUIRY &&
(p_inqparms->mode & BTM_BLE_INQUIRY_MASK) != BTM_BLE_GENERAL_INQUIRY &&
(p_inqparms->mode & BTM_BLE_INQUIRY_MASK) != BTM_BLE_LIMITED_INQUIRY)
return (BTM_ILLEGAL_VALUE);
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
if (p_inq->next_state == BTM_FINISH) return BTM_ILLEGAL_VALUE;
#endif
/* Save the inquiry parameters to be used upon the completion of
* setting/clearing the inquiry filter */
p_inq->inqparms = *p_inqparms;
/* Initialize the inquiry variables */
p_inq->state = BTM_INQ_ACTIVE_STATE;
p_inq->p_inq_cmpl_cb = p_cmpl_cb;
p_inq->p_inq_results_cb = p_results_cb;
p_inq->inq_cmpl_info.num_resp = 0; /* Clear the results counter */
p_inq->inq_active = p_inqparms->mode;
BTM_TRACE_DEBUG("BTM_StartInquiry: p_inq->inq_active = 0x%02x",
p_inq->inq_active);
/* interleave scan minimal conditions */
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
/* check if both modes are present */
if ((p_inqparms->mode & BTM_BLE_INQUIRY_MASK) &&
(p_inqparms->mode & BTM_BR_INQUIRY_MASK)) {
BTM_TRACE_API("BTM:Interleave Inquiry Mode Set");
p_inqparms->duration = p_inqparms->intl_duration[p_inq->next_state];
p_inq->inqparms.duration = p_inqparms->duration;
} else {
BTM_TRACE_API("BTM:Single Mode: No interleaving, Mode:0x%02x",
p_inqparms->mode);
p_inq->next_state = BTM_NO_INTERLEAVING;
}
#endif
/* start LE inquiry here if requested */
if ((p_inqparms->mode & BTM_BLE_INQUIRY_MASK)
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
&&
(p_inq->next_state == BTM_BLE_ONE || p_inq->next_state == BTM_BLE_TWO ||
p_inq->next_state == BTM_NO_INTERLEAVING)
#endif
)
{
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
p_inq->inq_active = (p_inqparms->mode & BTM_BLE_INQUIRY_MASK);
BTM_TRACE_API("BTM:Starting LE Scan with duration %d and activeMode:0x%02x",
p_inqparms->duration,
(p_inqparms->mode & BTM_BLE_INQUIRY_MASK));
#endif
if (!controller_get_interface()->supports_ble()) {
p_inq->inqparms.mode &= ~BTM_BLE_INQUIRY_MASK;
status = BTM_ILLEGAL_VALUE;
}
/* BLE for now does not support filter condition for inquiry */
else {
status = btm_ble_start_inquiry(
(uint8_t)(p_inqparms->mode & BTM_BLE_INQUIRY_MASK),
p_inqparms->duration);
if (status != BTM_CMD_STARTED) {
BTM_TRACE_ERROR("Err Starting LE Inquiry.");
p_inq->inqparms.mode &= ~BTM_BLE_INQUIRY_MASK;
}
}
#if (BTA_HOST_INTERLEAVE_SEARCH == FALSE)
p_inqparms->mode &= ~BTM_BLE_INQUIRY_MASK;
#endif
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
if (p_inq->next_state == BTM_NO_INTERLEAVING) {
p_inq->next_state = BTM_FINISH;
} else {
BTM_TRACE_API(
"BTM:Interleaving: started LE scan, Advancing to next state: %d",
p_inq->next_state + 1);
p_inq->next_state += 1;
}
/* reset next_state if status <> BTM_Started */
if (status != BTM_CMD_STARTED) p_inq->next_state = BTM_BR_ONE;
/* if interleave scan..return here */
return status;
#endif
BTM_TRACE_DEBUG("BTM_StartInquiry: mode = %02x", p_inqparms->mode);
}
/* we're done with this routine if BR/EDR inquiry is not desired. */
if ((p_inqparms->mode & BTM_BR_INQUIRY_MASK) == BTM_INQUIRY_NONE)
return status;
/* BR/EDR inquiry portion */
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
if ((p_inq->next_state == BTM_BR_ONE || p_inq->next_state == BTM_BR_TWO ||
p_inq->next_state == BTM_NO_INTERLEAVING)) {
p_inq->inq_active = (p_inqparms->mode & BTM_BR_INQUIRY_MASK);
#endif
/* If a filter is specified, then save it for later and clear the current
filter.
The setting of the filter is done upon completion of clearing of the
previous
filter.
*/
switch (p_inqparms->filter_cond_type) {
case BTM_CLR_INQUIRY_FILTER:
p_inq->state = BTM_INQ_SET_FILT_STATE;
break;
case BTM_FILTER_COND_DEVICE_CLASS:
case BTM_FILTER_COND_BD_ADDR:
/* The filter is not being used so simply clear it;
the inquiry can start after this operation */
p_inq->state = BTM_INQ_CLR_FILT_STATE;
p_inqparms->filter_cond_type = BTM_CLR_INQUIRY_FILTER;
/* =============>>>> adding LE filtering here ????? */
break;
default:
return (BTM_ILLEGAL_VALUE);
}
/* Before beginning the inquiry the current filter must be cleared, so
* initiate the command */
status = btm_set_inq_event_filter(p_inqparms->filter_cond_type,
&p_inqparms->filter_cond);
if (status != BTM_CMD_STARTED) p_inq->state = BTM_INQ_INACTIVE_STATE;
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
if (p_inq->next_state == BTM_NO_INTERLEAVING)
p_inq->next_state = BTM_FINISH;
else {
BTM_TRACE_API(
"BTM:Interleaving: Started BTM inq, Advancing to next state: %d",
p_inq->next_state + 1);
p_inq->next_state += 1;
}
}
if (status != BTM_CMD_STARTED) {
/* Some error beginning the scan process.
Reset the next_state parameter.. Do we need to reset the inq_active also?
*/
BTM_TRACE_API("BTM:Interleaving: Error in Starting inquiry, status: 0x%02x",
status);
p_inq->next_state = BTM_BR_ONE;
}
#endif
return (status);
}
/*******************************************************************************
*
* Function BTM_ReadRemoteDeviceName
*
* Description This function initiates a remote device HCI command to the
* controller and calls the callback when the process has
* completed.
*
* Input Params: remote_bda - device address of name to retrieve
* p_cb - callback function called when
* BTM_CMD_STARTED is returned.
* A pointer to tBTM_REMOTE_DEV_NAME is
* passed to the callback.
*
* Returns
* BTM_CMD_STARTED is returned if the request was successfully
* sent to HCI.
* BTM_BUSY if already in progress
* BTM_UNKNOWN_ADDR if device address is bad
* BTM_NO_RESOURCES if could not allocate resources to start
* the command
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS BTM_ReadRemoteDeviceName(const RawAddress& remote_bda,
tBTM_CMPL_CB* p_cb,
tBT_TRANSPORT transport) {
VLOG(1) << __func__ << ": bd addr " << remote_bda;
/* Use LE transport when LE is the only available option */
if (transport == BT_TRANSPORT_LE) {
return btm_ble_read_remote_name(remote_bda, p_cb);
}
/* Use classic transport for BR/EDR and Dual Mode devices */
return btm_initiate_rem_name(remote_bda, BTM_RMT_NAME_EXT,
BTM_EXT_RMT_NAME_TIMEOUT_MS, p_cb);
}
/*******************************************************************************
*
* Function BTM_CancelRemoteDeviceName
*
* Description This function initiates the cancel request for the specified
* remote device.
*
* Input Params: None
*
* Returns
* BTM_CMD_STARTED is returned if the request was successfully
* sent to HCI.
* BTM_NO_RESOURCES if could not allocate resources to start
* the command
* BTM_WRONG_MODE if there is not an active remote name
* request.
*
******************************************************************************/
tBTM_STATUS BTM_CancelRemoteDeviceName(void) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
BTM_TRACE_API("BTM_CancelRemoteDeviceName()");
/* Make sure there is not already one in progress */
if (p_inq->remname_active) {
if (BTM_UseLeLink(p_inq->remname_bda)) {
if (btm_ble_cancel_remote_name(p_inq->remname_bda))
return (BTM_CMD_STARTED);
else
return (BTM_UNKNOWN_ADDR);
} else
btsnd_hcic_rmt_name_req_cancel(p_inq->remname_bda);
/** M: callback on cancelling, no need to wait for RNR completed event @{*/
if (p_inq->p_remname_cmpl_cb) {
tBTM_REMOTE_DEV_NAME rem_name;
rem_name.status = BTM_BAD_VALUE_RET;
rem_name.length = 0;
rem_name.remote_bd_name[0] = 0;
p_inq->p_remname_cmpl_cb (&rem_name);
p_inq->p_remname_cmpl_cb = NULL;
}
/** @} */
return (BTM_CMD_STARTED);
} else
return (BTM_WRONG_MODE);
}
/*******************************************************************************
*
* Function BTM_InqDbRead
*
* Description This function looks through the inquiry database for a match
* based on Bluetooth Device Address. This is the application's
* interface to get the inquiry details of a specific BD
* address.
*
* Returns pointer to entry, or NULL if not found
*
******************************************************************************/
tBTM_INQ_INFO* BTM_InqDbRead(const RawAddress& p_bda) {
VLOG(1) << __func__ << ": bd addr " << p_bda;
tINQ_DB_ENT* p_ent = btm_inq_db_find(p_bda);
if (!p_ent) return NULL;
return &p_ent->inq_info;
}
/*******************************************************************************
*
* Function BTM_InqDbFirst
*
* Description This function looks through the inquiry database for the
* first used entry, and returns that. This is used in
* conjunction with
* BTM_InqDbNext by applications as a way to walk through the
* inquiry database.
*
* Returns pointer to first in-use entry, or NULL if DB is empty
*
******************************************************************************/
tBTM_INQ_INFO* BTM_InqDbFirst(void) {
uint16_t xx;
tINQ_DB_ENT* p_ent = btm_cb.btm_inq_vars.inq_db;
for (xx = 0; xx < BTM_INQ_DB_SIZE; xx++, p_ent++) {
if (p_ent->in_use) return (&p_ent->inq_info);
}
/* If here, no used entry found */
return ((tBTM_INQ_INFO*)NULL);
}
/*******************************************************************************
*
* Function BTM_InqDbNext
*
* Description This function looks through the inquiry database for the
* next used entry, and returns that. If the input parameter
* is NULL, the first entry is returned.
*
* Returns pointer to next in-use entry, or NULL if no more found.
*
******************************************************************************/
tBTM_INQ_INFO* BTM_InqDbNext(tBTM_INQ_INFO* p_cur) {
tINQ_DB_ENT* p_ent;
uint16_t inx;
if (p_cur) {
p_ent = (tINQ_DB_ENT*)((uint8_t*)p_cur - offsetof(tINQ_DB_ENT, inq_info));
inx = (uint16_t)((p_ent - btm_cb.btm_inq_vars.inq_db) + 1);
for (p_ent = &btm_cb.btm_inq_vars.inq_db[inx]; inx < BTM_INQ_DB_SIZE;
inx++, p_ent++) {
if (p_ent->in_use) return (&p_ent->inq_info);
}
/* If here, more entries found */
return ((tBTM_INQ_INFO*)NULL);
} else
return (BTM_InqDbFirst());
}
/*******************************************************************************
*
* Function BTM_ClearInqDb
*
* Description This function is called to clear out a device or all devices
* from the inquiry database.
*
* Parameter p_bda - (input) BD_ADDR -> Address of device to clear
* (NULL clears all entries)
*
* Returns BTM_BUSY if an inquiry, get remote name, or event filter
* is active, otherwise BTM_SUCCESS
*
******************************************************************************/
tBTM_STATUS BTM_ClearInqDb(const RawAddress* p_bda) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
/* If an inquiry or remote name is in progress return busy */
if (p_inq->inq_active != BTM_INQUIRY_INACTIVE || p_inq->inqfilt_active)
return (BTM_BUSY);
btm_clr_inq_db(p_bda);
return (BTM_SUCCESS);
}
/*******************************************************************************
*
* Function BTM_ReadInquiryRspTxPower
*
* Description This command will read the inquiry Transmit Power level used
* to transmit the FHS and EIR data packets. This can be used
* directly in the Tx Power Level EIR data type.
*
* Returns BTM_SUCCESS if successful
*
******************************************************************************/
tBTM_STATUS BTM_ReadInquiryRspTxPower(tBTM_CMPL_CB* p_cb) {
if (btm_cb.devcb.p_inq_tx_power_cmpl_cb) return (BTM_BUSY);
btm_cb.devcb.p_inq_tx_power_cmpl_cb = p_cb;
alarm_set_on_mloop(btm_cb.devcb.read_inq_tx_power_timer,
BTM_INQ_REPLY_TIMEOUT_MS, btm_read_inq_tx_power_timeout,
NULL);
btsnd_hcic_read_inq_tx_power();
return (BTM_CMD_STARTED);
}
/*******************************************************************************
*******************************************************************************
* **
* BTM Internal Inquiry Functions **
* **
*******************************************************************************
******************************************************************************/
/*******************************************************************************
*
* Function btm_inq_db_reset
*
* Description This function is called at at reset to clear the inquiry
* database & pending callback.
*
* Returns void
*
******************************************************************************/
void btm_inq_db_reset(void) {
tBTM_REMOTE_DEV_NAME rem_name;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
uint8_t num_responses;
uint8_t temp_inq_active;
tBTM_STATUS status;
/* If an inquiry or periodic inquiry is active, reset the mode to inactive */
if (p_inq->inq_active != BTM_INQUIRY_INACTIVE) {
temp_inq_active = p_inq->inq_active; /* Save so state can change BEFORE
callback is called */
p_inq->inq_active = BTM_INQUIRY_INACTIVE;
/* If not a periodic inquiry, the complete callback must be called to notify
* caller */
if (temp_inq_active == BTM_LIMITED_INQUIRY_ACTIVE ||
temp_inq_active == BTM_GENERAL_INQUIRY_ACTIVE) {
if (p_inq->p_inq_cmpl_cb) {
num_responses = 0;
(*p_inq->p_inq_cmpl_cb)(&num_responses);
}
}
}
/* Cancel a remote name request if active, and notify the caller (if waiting)
*/
if (p_inq->remname_active) {
alarm_cancel(p_inq->remote_name_timer);
p_inq->remname_active = false;
p_inq->remname_bda = RawAddress::kEmpty;
if (p_inq->p_remname_cmpl_cb) {
rem_name.status = BTM_DEV_RESET;
(*p_inq->p_remname_cmpl_cb)(&rem_name);
p_inq->p_remname_cmpl_cb = NULL;
}
}
/* Cancel an inquiry filter request if active, and notify the caller (if
* waiting) */
if (p_inq->inqfilt_active) {
p_inq->inqfilt_active = false;
if (p_inq->p_inqfilter_cmpl_cb) {
status = BTM_DEV_RESET;
(*p_inq->p_inqfilter_cmpl_cb)(&status);
}
}
p_inq->state = BTM_INQ_INACTIVE_STATE;
p_inq->pending_filt_complete_event = 0;
p_inq->p_inq_results_cb = NULL;
btm_clr_inq_db(NULL); /* Clear out all the entries in the database */
btm_clr_inq_result_flt();
p_inq->discoverable_mode = BTM_NON_DISCOVERABLE;
p_inq->connectable_mode = BTM_NON_CONNECTABLE;
p_inq->page_scan_type = BTM_SCAN_TYPE_STANDARD;
p_inq->inq_scan_type = BTM_SCAN_TYPE_STANDARD;
p_inq->discoverable_mode |= BTM_BLE_NON_DISCOVERABLE;
p_inq->connectable_mode |= BTM_BLE_NON_CONNECTABLE;
return;
}
/*******************************************************************************
*
* Function btm_inq_db_init
*
* Description This function is called at startup to initialize the inquiry
* database.
*
* Returns void
*
******************************************************************************/
void btm_inq_db_init(void) {
alarm_free(btm_cb.btm_inq_vars.remote_name_timer);
btm_cb.btm_inq_vars.remote_name_timer =
alarm_new("btm_inq.remote_name_timer");
btm_cb.btm_inq_vars.no_inc_ssp = BTM_NO_SSP_ON_INQUIRY;
}
/*******************************************************************************
*
* Function btm_inq_stop_on_ssp
*
* Description This function is called on incoming SSP
*
* Returns void
*
******************************************************************************/
void btm_inq_stop_on_ssp(void) {
uint8_t normal_active =
(BTM_GENERAL_INQUIRY_ACTIVE | BTM_LIMITED_INQUIRY_ACTIVE);
#if (BTM_INQ_DEBUG == TRUE)
BTM_TRACE_DEBUG(
"btm_inq_stop_on_ssp: no_inc_ssp=%d inq_active:0x%x state:%d "
"inqfilt_active:%d",
btm_cb.btm_inq_vars.no_inc_ssp, btm_cb.btm_inq_vars.inq_active,
btm_cb.btm_inq_vars.state, btm_cb.btm_inq_vars.inqfilt_active);
#endif
if (btm_cb.btm_inq_vars.no_inc_ssp) {
if (btm_cb.btm_inq_vars.state == BTM_INQ_ACTIVE_STATE) {
if (btm_cb.btm_inq_vars.inq_active & BTM_PERIODIC_INQUIRY_ACTIVE) {
BTM_CancelPeriodicInquiry();
} else if (btm_cb.btm_inq_vars.inq_active & normal_active) {
/* can not call BTM_CancelInquiry() here. We need to report inquiry
* complete evt */
btsnd_hcic_inq_cancel();
}
}
/* do not allow inquiry to start */
btm_cb.btm_inq_vars.inq_active |= BTM_SSP_INQUIRY_ACTIVE;
}
}
/*******************************************************************************
*
* Function btm_inq_clear_ssp
*
* Description This function is called when pairing_state becomes idle
*
* Returns void
*
******************************************************************************/
void btm_inq_clear_ssp(void) {
btm_cb.btm_inq_vars.inq_active &= ~BTM_SSP_INQUIRY_ACTIVE;
}
/*******************************************************************************
*
* Function btm_clr_inq_db
*
* Description This function is called to clear out a device or all devices
* from the inquiry database.
*
* Parameter p_bda - (input) BD_ADDR -> Address of device to clear
* (NULL clears all entries)
*
* Returns void
*
******************************************************************************/
void btm_clr_inq_db(const RawAddress* p_bda) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
tINQ_DB_ENT* p_ent = p_inq->inq_db;
uint16_t xx;
#if (BTM_INQ_DEBUG == TRUE)
BTM_TRACE_DEBUG("btm_clr_inq_db: inq_active:0x%x state:%d",
btm_cb.btm_inq_vars.inq_active, btm_cb.btm_inq_vars.state);
#endif
for (xx = 0; xx < BTM_INQ_DB_SIZE; xx++, p_ent++) {
if (p_ent->in_use) {
/* If this is the specified BD_ADDR or clearing all devices */
if (p_bda == NULL || (p_ent->inq_info.results.remote_bd_addr == *p_bda)) {
p_ent->in_use = false;
}
}
}
#if (BTM_INQ_DEBUG == TRUE)
BTM_TRACE_DEBUG("inq_active:0x%x state:%d", btm_cb.btm_inq_vars.inq_active,
btm_cb.btm_inq_vars.state);
#endif
}
/*******************************************************************************
*
* Function btm_clr_inq_result_flt
*
* Description This function looks through the bdaddr database for a match
* based on Bluetooth Device Address
*
* Returns true if found, else false (new entry)
*
******************************************************************************/
static void btm_clr_inq_result_flt(void) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
osi_free_and_reset((void**)&p_inq->p_bd_db);
p_inq->num_bd_entries = 0;
p_inq->max_bd_entries = 0;
}
/*******************************************************************************
*
* Function btm_inq_find_bdaddr
*
* Description This function looks through the bdaddr database for a match
* based on Bluetooth Device Address
*
* Returns true if found, else false (new entry)
*
******************************************************************************/
bool btm_inq_find_bdaddr(const RawAddress& p_bda) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
tINQ_BDADDR* p_db = &p_inq->p_bd_db[0];
uint16_t xx;
/* Don't bother searching, database doesn't exist or periodic mode */
if ((p_inq->inq_active & BTM_PERIODIC_INQUIRY_ACTIVE) || !p_db)
return (false);
for (xx = 0; xx < p_inq->num_bd_entries; xx++, p_db++) {
if (p_db->bd_addr == p_bda && p_db->inq_count == p_inq->inq_counter)
return (true);
}
if (xx < p_inq->max_bd_entries) {
p_db->inq_count = p_inq->inq_counter;
p_db->bd_addr = p_bda;
p_inq->num_bd_entries++;
}
/* If here, New Entry */
return (false);
}
/*******************************************************************************
*
* Function btm_inq_db_find
*
* Description This function looks through the inquiry database for a match
* based on Bluetooth Device Address
*
* Returns pointer to entry, or NULL if not found
*
******************************************************************************/
tINQ_DB_ENT* btm_inq_db_find(const RawAddress& p_bda) {
uint16_t xx;
tINQ_DB_ENT* p_ent = btm_cb.btm_inq_vars.inq_db;
for (xx = 0; xx < BTM_INQ_DB_SIZE; xx++, p_ent++) {
if (p_ent->in_use && p_ent->inq_info.results.remote_bd_addr == p_bda)
return (p_ent);
}
/* If here, not found */
return (NULL);
}
/*******************************************************************************
*
* Function btm_inq_db_new
*
* Description This function looks through the inquiry database for an
* unused entry. If no entry is free, it allocates the oldest
* entry.
*
* Returns pointer to entry
*
******************************************************************************/
tINQ_DB_ENT* btm_inq_db_new(const RawAddress& p_bda) {
uint16_t xx;
tINQ_DB_ENT* p_ent = btm_cb.btm_inq_vars.inq_db;
tINQ_DB_ENT* p_old = btm_cb.btm_inq_vars.inq_db;
uint32_t ot = 0xFFFFFFFF;
for (xx = 0; xx < BTM_INQ_DB_SIZE; xx++, p_ent++) {
if (!p_ent->in_use) {
memset(p_ent, 0, sizeof(tINQ_DB_ENT));
p_ent->inq_info.results.remote_bd_addr = p_bda;
p_ent->in_use = true;
return (p_ent);
}
if (p_ent->time_of_resp < ot) {
p_old = p_ent;
ot = p_ent->time_of_resp;
}
}
/* If here, no free entry found. Return the oldest. */
memset(p_old, 0, sizeof(tINQ_DB_ENT));
p_old->inq_info.results.remote_bd_addr = p_bda;
p_old->in_use = true;
return (p_old);
}
/*******************************************************************************
*
* Function btm_set_inq_event_filter
*
* Description This function is called to set the inquiry event filter.
* It is called by either internally, or by the external API
* function (BTM_SetInqEventFilter). It is used internally as
* part of the inquiry processing.
*
* Input Params:
* filter_cond_type - this is the type of inquiry filter to
* apply:
* BTM_FILTER_COND_DEVICE_CLASS,
* BTM_FILTER_COND_BD_ADDR, or
* BTM_CLR_INQUIRY_FILTER
*
* p_filt_cond - this is either a BD_ADDR or DEV_CLASS
* depending on the filter_cond_type
* (See section 4.7.3 of Core Spec 1.0b).
*
* Returns BTM_CMD_STARTED if successfully initiated
* BTM_NO_RESOURCES if couldn't get a memory pool buffer
* BTM_ILLEGAL_VALUE if a bad parameter was detected
*
******************************************************************************/
static tBTM_STATUS btm_set_inq_event_filter(uint8_t filter_cond_type,
tBTM_INQ_FILT_COND* p_filt_cond) {
uint8_t condition_length = DEV_CLASS_LEN * 2;
uint8_t condition_buf[DEV_CLASS_LEN * 2];
uint8_t* p_cond = condition_buf; /* points to the condition to pass to HCI */
#if (BTM_INQ_DEBUG == TRUE)
BTM_TRACE_DEBUG(
"btm_set_inq_event_filter: filter type %d [Clear-0, COD-1, BDADDR-2]",
filter_cond_type);
VLOG(2) << "condition " << p_filt_cond->bdaddr_cond;
#endif
/* Load the correct filter condition to pass to the lower layer */
switch (filter_cond_type) {
case BTM_FILTER_COND_DEVICE_CLASS:
/* copy the device class and device class fields into contiguous memory to
* send to HCI */
memcpy(condition_buf, p_filt_cond->cod_cond.dev_class, DEV_CLASS_LEN);
memcpy(&condition_buf[DEV_CLASS_LEN],
p_filt_cond->cod_cond.dev_class_mask, DEV_CLASS_LEN);
/* condition length should already be set as the default */
break;
case BTM_FILTER_COND_BD_ADDR:
p_cond = (uint8_t*)&p_filt_cond->bdaddr_cond;
/* condition length should already be set as the default */
break;
case BTM_CLR_INQUIRY_FILTER:
condition_length = 0;
break;
default:
return (BTM_ILLEGAL_VALUE); /* Bad parameter was passed in */
}
btm_cb.btm_inq_vars.inqfilt_active = true;
/* Filter the inquiry results for the specified condition type and value */
btsnd_hcic_set_event_filter(HCI_FILTER_INQUIRY_RESULT, filter_cond_type,
p_cond, condition_length);
return (BTM_CMD_STARTED);
}
/*******************************************************************************
*
* Function btm_event_filter_complete
*
* Description This function is called when a set event filter has
* completed.
* Note: This routine currently only handles inquiry filters.
* Connection filters are ignored for now.
*
* Returns void
*
******************************************************************************/
void btm_event_filter_complete(uint8_t* p) {
uint8_t hci_status;
tBTM_STATUS status;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
tBTM_CMPL_CB* p_cb = p_inq->p_inqfilter_cmpl_cb;
#if (BTM_INQ_DEBUG == TRUE)
BTM_TRACE_DEBUG(
"btm_event_filter_complete: inq_active:0x%x state:%d inqfilt_active:%d",
btm_cb.btm_inq_vars.inq_active, btm_cb.btm_inq_vars.state,
btm_cb.btm_inq_vars.inqfilt_active);
#endif
/* If the filter complete event is from an old or cancelled request, ignore it
*/
if (p_inq->pending_filt_complete_event) {
p_inq->pending_filt_complete_event--;
return;
}
/* Only process the inquiry filter; Ignore the connection filter until it
is used by the upper layers */
if (p_inq->inqfilt_active == true) {
/* Extract the returned status from the buffer */
STREAM_TO_UINT8(hci_status, p);
if (hci_status != HCI_SUCCESS) {
/* If standalone operation, return the error status; if embedded in the
* inquiry, continue the inquiry */
BTM_TRACE_WARNING(
"BTM Warning: Set Event Filter Failed (HCI returned 0x%x)",
hci_status);
status = BTM_ERR_PROCESSING;
} else
status = BTM_SUCCESS;
/* If the set filter was initiated externally (via BTM_SetInqEventFilter),
call the
callback function to notify the initiator that it has completed */
if (p_inq->state == BTM_INQ_INACTIVE_STATE) {
p_inq->inqfilt_active = false;
if (p_cb) (*p_cb)(&status);
} else /* An inquiry is active (the set filter command was internally
generated),
process the next state of the process (Set a new filter or start
the inquiry). */
{
if (status != BTM_SUCCESS) {
/* Process the inquiry complete (Error Status) */
btm_process_inq_complete(
BTM_ERR_PROCESSING,
(uint8_t)(p_inq->inqparms.mode & BTM_BR_INQUIRY_MASK));
/* btm_process_inq_complete() does not restore the following settings on
* periodic inquiry */
p_inq->inqfilt_active = false;
p_inq->inq_active = BTM_INQUIRY_INACTIVE;
p_inq->state = BTM_INQ_INACTIVE_STATE;
return;
}
/* Check to see if a new filter needs to be set up */
if (p_inq->state == BTM_INQ_CLR_FILT_STATE) {
status = btm_set_inq_event_filter(p_inq->inqparms.filter_cond_type,
&p_inq->inqparms.filter_cond);
if (status == BTM_CMD_STARTED) {
p_inq->state = BTM_INQ_SET_FILT_STATE;
} else /* Error setting the filter: Call the initiator's callback
function to indicate a failure */
{
p_inq->inqfilt_active = false;
/* Process the inquiry complete (Error Status) */
btm_process_inq_complete(
BTM_ERR_PROCESSING,
(uint8_t)(p_inq->inqparms.mode & BTM_BR_INQUIRY_MASK));
}
} else /* Initiate the Inquiry or Periodic Inquiry */
{
p_inq->state = BTM_INQ_ACTIVE_STATE;
p_inq->inqfilt_active = false;
btm_initiate_inquiry(p_inq);
}
}
}
}
/*******************************************************************************
*
* Function btm_initiate_inquiry
*
* Description This function is called to start an inquiry or periodic
* inquiry upon completion of the setting and/or clearing of
* the inquiry filter.
*
* Inputs: p_inq (btm_cb.btm_inq_vars) - pointer to saved inquiry
* information
* mode - GENERAL or LIMITED inquiry
* duration - length in 1.28 sec intervals
* (If '0', the inquiry is CANCELLED)
* max_resps - maximum amount of devices to search for
* before ending the inquiry
* filter_cond_type - BTM_CLR_INQUIRY_FILTER,
* BTM_FILTER_COND_DEVICE_CLASS, or
* BTM_FILTER_COND_BD_ADDR
* filter_cond - value for the filter
* (based on filter_cond_type)
*
* Returns If an error occurs the initiator's callback is called with
* the error status.
*
******************************************************************************/
static void btm_initiate_inquiry(tBTM_INQUIRY_VAR_ST* p_inq) {
const LAP* lap;
tBTM_INQ_PARMS* p_inqparms = &p_inq->inqparms;
#if (BTM_INQ_DEBUG == TRUE)
BTM_TRACE_DEBUG(
"btm_initiate_inquiry: inq_active:0x%x state:%d inqfilt_active:%d",
btm_cb.btm_inq_vars.inq_active, btm_cb.btm_inq_vars.state,
btm_cb.btm_inq_vars.inqfilt_active);
#endif
btm_acl_update_busy_level(BTM_BLI_INQ_EVT);
if (p_inq->inq_active & BTM_SSP_INQUIRY_ACTIVE) {
btm_process_inq_complete(BTM_NO_RESOURCES,
(uint8_t)(p_inqparms->mode & BTM_BR_INQUIRY_MASK));
return;
}
/* Make sure the number of responses doesn't overflow the database
* configuration */
p_inqparms->max_resps = (uint8_t)((p_inqparms->max_resps <= BTM_INQ_DB_SIZE)
? p_inqparms->max_resps
: BTM_INQ_DB_SIZE);
lap = (p_inq->inq_active & BTM_LIMITED_INQUIRY_ACTIVE) ? &limited_inq_lap
: &general_inq_lap;
if (p_inq->inq_active & BTM_PERIODIC_INQUIRY_ACTIVE) {
btsnd_hcic_per_inq_mode(p_inq->per_max_delay, p_inq->per_min_delay, *lap,
p_inqparms->duration, p_inqparms->max_resps);
} else {
btm_clr_inq_result_flt();
/* Allocate memory to hold bd_addrs responding */
p_inq->p_bd_db = (tINQ_BDADDR*)osi_calloc(BT_DEFAULT_BUFFER_SIZE);
p_inq->max_bd_entries =
(uint16_t)(BT_DEFAULT_BUFFER_SIZE / sizeof(tINQ_BDADDR));
btsnd_hcic_inquiry(*lap, p_inqparms->duration, 0);
}
}
/*******************************************************************************
*
* Function btm_process_inq_results
*
* Description This function is called when inquiry results are received
* from the device. It updates the inquiry database. If the
* inquiry database is full, the oldest entry is discarded.
*
* Parameters inq_res_mode - BTM_INQ_RESULT_STANDARD
* BTM_INQ_RESULT_WITH_RSSI
* BTM_INQ_RESULT_EXTENDED
*
* Returns void
*
******************************************************************************/
void btm_process_inq_results(uint8_t* p, uint8_t inq_res_mode) {
uint8_t num_resp, xx;
RawAddress bda;
tINQ_DB_ENT* p_i;
tBTM_INQ_RESULTS* p_cur = NULL;
bool is_new = true;
bool update = false;
int8_t i_rssi;
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;
uint8_t page_scan_rep_mode = 0;
uint8_t page_scan_per_mode = 0;
uint8_t page_scan_mode = 0;
uint8_t rssi = 0;
DEV_CLASS dc;
uint16_t clock_offset;
uint8_t* p_eir_data = NULL;
#if (BTM_INQ_DEBUG == TRUE)
BTM_TRACE_DEBUG(
"btm_process_inq_results inq_active:0x%x state:%d inqfilt_active:%d",
btm_cb.btm_inq_vars.inq_active, btm_cb.btm_inq_vars.state,
btm_cb.btm_inq_vars.inqfilt_active);
#endif
/* Only process the results if the BR inquiry is still active */
if (!(p_inq->inq_active & BTM_BR_INQ_ACTIVE_MASK)) return;
STREAM_TO_UINT8(num_resp, p);
if (inq_res_mode == BTM_INQ_RESULT_EXTENDED && (num_resp > 1)) {
BTM_TRACE_ERROR("btm_process_inq_results() extended results (%d) > 1",
num_resp);
return;
}
for (xx = 0; xx < num_resp; xx++) {
update = false;
/* Extract inquiry results */
STREAM_TO_BDADDR(bda, p);
STREAM_TO_UINT8(page_scan_rep_mode, p);
STREAM_TO_UINT8(page_scan_per_mode, p);
if (inq_res_mode == BTM_INQ_RESULT_STANDARD) {
STREAM_TO_UINT8(page_scan_mode, p);
}
STREAM_TO_DEVCLASS(dc, p);
STREAM_TO_UINT16(clock_offset, p);
if (inq_res_mode != BTM_INQ_RESULT_STANDARD) {
STREAM_TO_UINT8(rssi, p);
}
p_i = btm_inq_db_find(bda);
/* Only process the num_resp is smaller than max_resps.
If results are queued to BTU task while canceling inquiry,
or when more than one result is in this response, > max_resp
responses could be processed which can confuse some apps
*/
if (p_inq->inqparms.max_resps &&
p_inq->inq_cmpl_info.num_resp >= p_inq->inqparms.max_resps
/* new device response */
&&
(p_i == NULL ||
/* exisiting device with BR/EDR info */
(p_i &&
(p_i->inq_info.results.device_type & BT_DEVICE_TYPE_BREDR) != 0))) {
/* BTM_TRACE_WARNING("INQ RES: Extra Response Received...ignoring"); */
return;
}
/* Check if this address has already been processed for this inquiry */
if (btm_inq_find_bdaddr(bda)) {
/* BTM_TRACE_DEBUG("BDA seen before [%02x%02x %02x%02x %02x%02x]",
bda[0], bda[1], bda[2], bda[3], bda[4], bda[5]);*/
/* By default suppose no update needed */
i_rssi = (int8_t)rssi;
/* If this new RSSI is higher than the last one */
if (p_inq->inqparms.report_dup && (rssi != 0) && p_i &&
(i_rssi > p_i->inq_info.results.rssi ||
p_i->inq_info.results.rssi == 0
/* BR/EDR inquiry information update */
||
(p_i->inq_info.results.device_type & BT_DEVICE_TYPE_BREDR) != 0)) {
p_cur = &p_i->inq_info.results;
BTM_TRACE_DEBUG("update RSSI new:%d, old:%d", i_rssi, p_cur->rssi);
p_cur->rssi = i_rssi;
update = true;
}
/* If we received a second Extended Inq Event for an already */
/* discovered device, this is because for the first one EIR was not
received */
else if ((inq_res_mode == BTM_INQ_RESULT_EXTENDED) && (p_i)) {
p_cur = &p_i->inq_info.results;
update = true;
}
/* If no update needed continue with next response (if any) */
else
continue;
}
/* If existing entry, use that, else get a new one (possibly reusing the
* oldest) */
if (p_i == NULL) {
p_i = btm_inq_db_new(bda);
is_new = true;
}
/* If an entry for the device already exists, overwrite it ONLY if it is
from
a previous inquiry. (Ignore it if it is a duplicate response from the
same
inquiry.
*/
else if (p_i->inq_count == p_inq->inq_counter &&
(p_i->inq_info.results.device_type == BT_DEVICE_TYPE_BREDR))
is_new = false;
/* keep updating RSSI to have latest value */
if (inq_res_mode != BTM_INQ_RESULT_STANDARD)
p_i->inq_info.results.rssi = (int8_t)rssi;
else
p_i->inq_info.results.rssi = BTM_INQ_RES_IGNORE_RSSI;
if (is_new == true) {
/* Save the info */
p_cur = &p_i->inq_info.results;
p_cur->page_scan_rep_mode = page_scan_rep_mode;
p_cur->page_scan_per_mode = page_scan_per_mode;
p_cur->page_scan_mode = page_scan_mode;
p_cur->dev_class[0] = dc[0];
p_cur->dev_class[1] = dc[1];
p_cur->dev_class[2] = dc[2];
p_cur->clock_offset = clock_offset | BTM_CLOCK_OFFSET_VALID;
p_i->time_of_resp = time_get_os_boottime_ms();
if (p_i->inq_count != p_inq->inq_counter)
p_inq->inq_cmpl_info.num_resp++; /* A new response was found */
p_cur->inq_result_type = BTM_INQ_RESULT_BR;
if (p_i->inq_count != p_inq->inq_counter) {
p_cur->device_type = BT_DEVICE_TYPE_BREDR;
p_i->scan_rsp = false;
} else
p_cur->device_type |= BT_DEVICE_TYPE_BREDR;
p_i->inq_count = p_inq->inq_counter; /* Mark entry for current inquiry */
/* If the number of responses found and not unlimited, issue a cancel
* inquiry */
if (!(p_inq->inq_active & BTM_PERIODIC_INQUIRY_ACTIVE) &&
p_inq->inqparms.max_resps &&
p_inq->inq_cmpl_info.num_resp == p_inq->inqparms.max_resps &&
/* BLE scanning is active and received adv */
((((p_inq->inqparms.mode & BTM_BLE_INQUIRY_MASK) != 0) &&
p_cur->device_type == BT_DEVICE_TYPE_DUMO && p_i->scan_rsp) ||
(p_inq->inqparms.mode & BTM_BLE_INQUIRY_MASK) == 0)) {
/* BTM_TRACE_DEBUG("BTMINQ: Found devices, cancelling
* inquiry..."); */
btsnd_hcic_inq_cancel();
if ((p_inq->inqparms.mode & BTM_BLE_INQUIRY_MASK) != 0)
btm_ble_stop_inquiry();
btm_acl_update_busy_level(BTM_BLI_INQ_DONE_EVT);
}
/* Initialize flag to false. This flag is set/used by application */
p_i->inq_info.appl_knows_rem_name = false;
}
if (is_new || update) {
if (inq_res_mode == BTM_INQ_RESULT_EXTENDED) {
memset(p_cur->eir_uuid, 0,
BTM_EIR_SERVICE_ARRAY_SIZE * (BTM_EIR_ARRAY_BITS / 8));
/* set bit map of UUID list from received EIR */
btm_set_eir_uuid(p, p_cur);
p_eir_data = p;
} else
p_eir_data = NULL;
/* If a callback is registered, call it with the results */
if (p_inq_results_cb)
(p_inq_results_cb)((tBTM_INQ_RESULTS*)p_cur, p_eir_data, 62);
}
}
}
/*******************************************************************************
*
* Function btm_sort_inq_result
*
* Description This function is called when inquiry complete is received
* from the device to sort inquiry results based on rssi.
*
* Returns void
*
******************************************************************************/
void btm_sort_inq_result(void) {
uint8_t xx, yy, num_resp;
tINQ_DB_ENT* p_ent = btm_cb.btm_inq_vars.inq_db;
tINQ_DB_ENT* p_next = btm_cb.btm_inq_vars.inq_db + 1;
int size;
tINQ_DB_ENT* p_tmp = (tINQ_DB_ENT*)osi_malloc(sizeof(tINQ_DB_ENT));
num_resp = (btm_cb.btm_inq_vars.inq_cmpl_info.num_resp < BTM_INQ_DB_SIZE)
? btm_cb.btm_inq_vars.inq_cmpl_info.num_resp
: BTM_INQ_DB_SIZE;
size = sizeof(tINQ_DB_ENT);
for (xx = 0; xx < num_resp - 1; xx++, p_ent++) {
for (yy = xx + 1, p_next = p_ent + 1; yy < num_resp; yy++, p_next++) {
if (p_ent->inq_info.results.rssi < p_next->inq_info.results.rssi) {
memcpy(p_tmp, p_next, size);
memcpy(p_next, p_ent, size);
memcpy(p_ent, p_tmp, size);
}
}
}
osi_free(p_tmp);
}
/*******************************************************************************
*
* Function btm_process_inq_complete
*
* Description This function is called when inquiry complete is received
* from the device. Call the callback if not in periodic
* inquiry mode AND it is not NULL
* (The caller wants the event).
*
* The callback pass back the status and the number of
* responses
*
* Returns void
*
******************************************************************************/
void btm_process_inq_complete(uint8_t status, uint8_t mode) {
tBTM_CMPL_CB* p_inq_cb = btm_cb.btm_inq_vars.p_inq_cmpl_cb;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
/* inquiry inactive case happens when inquiry is cancelled.
Make mode 0 for no further inquiries from the current inquiry process
*/
if (status != HCI_SUCCESS || p_inq->next_state == BTM_FINISH ||
!p_inq->inq_active) {
/* re-initialize for next inquiry request */
p_inq->next_state = BTM_BR_ONE;
/* make the mode 0 here */
p_inq->inqparms.mode &= ~(p_inq->inqparms.mode);
}
#endif
#if (BTA_HOST_INTERLEAVE_SEARCH == FALSE)
p_inq->inqparms.mode &= ~(mode);
#endif
if (p_inq->scan_type == INQ_LE_OBSERVE && !p_inq->inq_active) {
/*end of LE observe*/
p_inq->p_inq_ble_results_cb = (tBTM_INQ_RESULTS_CB*)NULL;
p_inq->p_inq_ble_cmpl_cb = (tBTM_CMPL_CB*)NULL;
p_inq->scan_type = INQ_NONE;
}
#if (BTM_INQ_DEBUG == TRUE)
BTM_TRACE_DEBUG(
"btm_process_inq_complete inq_active:0x%x state:%d inqfilt_active:%d",
btm_cb.btm_inq_vars.inq_active, btm_cb.btm_inq_vars.state,
btm_cb.btm_inq_vars.inqfilt_active);
#endif
btm_acl_update_busy_level(BTM_BLI_INQ_DONE_EVT);
/* Ignore any stray or late complete messages if the inquiry is not active */
if (p_inq->inq_active) {
p_inq->inq_cmpl_info.status = (tBTM_STATUS)(
(status == HCI_SUCCESS) ? BTM_SUCCESS : BTM_ERR_PROCESSING);
/* Notify caller that the inquiry has completed; (periodic inquiries do not
* send completion events */
if (!(p_inq->inq_active & BTM_PERIODIC_INQUIRY_ACTIVE) &&
p_inq->inqparms.mode == 0) {
btm_clear_all_pending_le_entry();
p_inq->state = BTM_INQ_INACTIVE_STATE;
/* Increment so the start of a next inquiry has a new count */
p_inq->inq_counter++;
btm_clr_inq_result_flt();
if ((p_inq->inq_cmpl_info.status == BTM_SUCCESS) &&
controller_get_interface()->supports_rssi_with_inquiry_results()) {
btm_sort_inq_result();
}
/* Clear the results callback if set */
p_inq->p_inq_results_cb = (tBTM_INQ_RESULTS_CB*)NULL;
p_inq->inq_active = BTM_INQUIRY_INACTIVE;
p_inq->p_inq_cmpl_cb = (tBTM_CMPL_CB*)NULL;
/* If we have a callback registered for inquiry complete, call it */
BTM_TRACE_DEBUG("BTM Inq Compl Callback: status 0x%02x, num results %d",
p_inq->inq_cmpl_info.status,
p_inq->inq_cmpl_info.num_resp);
if (p_inq_cb) (p_inq_cb)((tBTM_INQUIRY_CMPL*)&p_inq->inq_cmpl_info);
}
#if (BTA_HOST_INTERLEAVE_SEARCH == TRUE)
if (p_inq->inqparms.mode != 0 &&
!(p_inq->inq_active & BTM_PERIODIC_INQUIRY_ACTIVE)) {
/* make inquiry inactive for next iteration */
p_inq->inq_active = BTM_INQUIRY_INACTIVE;
/* call the inquiry again */
BTM_StartInquiry(&p_inq->inqparms, p_inq->p_inq_results_cb,
p_inq->p_inq_cmpl_cb);
}
#endif
}
if (p_inq->inqparms.mode == 0 &&
p_inq->scan_type == INQ_GENERAL) // this inquiry is complete
{
p_inq->scan_type = INQ_NONE;
/* check if the LE observe is pending */
if (p_inq->p_inq_ble_results_cb != NULL) {
BTM_TRACE_DEBUG("BTM Inq Compl: resuming a pending LE scan");
BTM_BleObserve(1, 0, p_inq->p_inq_ble_results_cb,
p_inq->p_inq_ble_cmpl_cb);
}
}
#if (BTM_INQ_DEBUG == TRUE)
BTM_TRACE_DEBUG("inq_active:0x%x state:%d inqfilt_active:%d",
btm_cb.btm_inq_vars.inq_active, btm_cb.btm_inq_vars.state,
btm_cb.btm_inq_vars.inqfilt_active);
#endif
}
/*******************************************************************************
*
* Function btm_process_cancel_complete
*
* Description This function is called when inquiry cancel complete is
* received from the device. This function will also call the
* btm_process_inq_complete. This function is needed to
* differentiate a cancel_cmpl_evt from the inq_cmpl_evt.
*
* Returns void
*
******************************************************************************/
void btm_process_cancel_complete(uint8_t status, uint8_t mode) {
btm_acl_update_busy_level(BTM_BLI_INQ_CANCEL_EVT);
btm_process_inq_complete(status, mode);
}
/*******************************************************************************
*
* Function btm_initiate_rem_name
*
* Description This function looks initiates a remote name request. It is
* called either by GAP or by the API call
* BTM_ReadRemoteDeviceName.
*
* Input Params: p_cb - callback function called when
* BTM_CMD_STARTED is returned.
* A pointer to tBTM_REMOTE_DEV_NAME is
* passed to the callback.
*
* Returns
* BTM_CMD_STARTED is returned if the request was sent to HCI.
* BTM_BUSY if already in progress
* BTM_NO_RESOURCES if could not allocate resources to start
* the command
* BTM_WRONG_MODE if the device is not up.
*
******************************************************************************/
tBTM_STATUS btm_initiate_rem_name(const RawAddress& remote_bda, uint8_t origin,
period_ms_t timeout_ms, tBTM_CMPL_CB* p_cb) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
/*** Make sure the device is ready ***/
if (!BTM_IsDeviceUp()) return (BTM_WRONG_MODE);
if (origin == BTM_RMT_NAME_SEC) {
btsnd_hcic_rmt_name_req(remote_bda, HCI_PAGE_SCAN_REP_MODE_R1,
HCI_MANDATARY_PAGE_SCAN_MODE, 0);
return BTM_CMD_STARTED;
}
/* Make sure there are no two remote name requests from external API in
progress */
else if (origin == BTM_RMT_NAME_EXT) {
if (p_inq->remname_active) {
return (BTM_BUSY);
} else {
/* If there is no remote name request running,call the callback function
* and start timer */
p_inq->p_remname_cmpl_cb = p_cb;
p_inq->remname_bda = remote_bda;
alarm_set_on_mloop(p_inq->remote_name_timer, timeout_ms,
btm_inq_remote_name_timer_timeout, NULL);
/* If the database entry exists for the device, use its clock offset */
tINQ_DB_ENT* p_i = btm_inq_db_find(remote_bda);
if (p_i) {
tBTM_INQ_INFO* p_cur = &p_i->inq_info;
btsnd_hcic_rmt_name_req(
remote_bda, p_cur->results.page_scan_rep_mode,
p_cur->results.page_scan_mode,
(uint16_t)(p_cur->results.clock_offset | BTM_CLOCK_OFFSET_VALID));
} else {
/* Otherwise use defaults and mark the clock offset as invalid */
btsnd_hcic_rmt_name_req(remote_bda, HCI_PAGE_SCAN_REP_MODE_R1,
HCI_MANDATARY_PAGE_SCAN_MODE, 0);
}
p_inq->remname_active = true;
return BTM_CMD_STARTED;
}
} else {
return BTM_ILLEGAL_VALUE;
}
}
/*******************************************************************************
*
* Function btm_process_remote_name
*
* Description This function is called when a remote name is received from
* the device. If remote names are cached, it updates the
* inquiry database.
*
* Returns void
*
******************************************************************************/
void btm_process_remote_name(const RawAddress* bda, BD_NAME bdn,
uint16_t evt_len, uint8_t hci_status) {
tBTM_REMOTE_DEV_NAME rem_name;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
tBTM_CMPL_CB* p_cb = p_inq->p_remname_cmpl_cb;
uint8_t* p_n1;
uint16_t temp_evt_len;
if (bda) {
VLOG(2) << "BDA " << *bda;
}
VLOG(2) << "Inquire BDA " << p_inq->remname_bda;
/* If the inquire BDA and remote DBA are the same, then stop the timer and set
* the active to false */
if ((p_inq->remname_active == true) &&
(!bda || (*bda == p_inq->remname_bda))) {
if (BTM_UseLeLink(p_inq->remname_bda)) {
if (hci_status == HCI_ERR_UNSPECIFIED)
btm_ble_cancel_remote_name(p_inq->remname_bda);
}
alarm_cancel(p_inq->remote_name_timer);
p_inq->remname_active = false;
/* Clean up and return the status if the command was not successful */
/* Note: If part of the inquiry, the name is not stored, and the */
/* inquiry complete callback is called. */
if (hci_status == HCI_SUCCESS) {
/* Copy the name from the data stream into the return structure */
/* Note that even if it is not being returned, it is used as a */
/* temporary buffer. */
p_n1 = (uint8_t*)rem_name.remote_bd_name;
rem_name.length = (evt_len < BD_NAME_LEN) ? evt_len : BD_NAME_LEN;
rem_name.remote_bd_name[rem_name.length] = 0;
rem_name.status = BTM_SUCCESS;
temp_evt_len = rem_name.length;
while (temp_evt_len > 0) {
*p_n1++ = *bdn++;
temp_evt_len--;
}
rem_name.remote_bd_name[rem_name.length] = 0;
}
/* If processing a stand alone remote name then report the error in the
callback */
else {
rem_name.status = BTM_BAD_VALUE_RET;
rem_name.length = 0;
rem_name.remote_bd_name[0] = 0;
}
/* Reset the remote BAD to zero and call callback if possible */
p_inq->remname_bda = RawAddress::kEmpty;
p_inq->p_remname_cmpl_cb = NULL;
if (p_cb) (p_cb)((tBTM_REMOTE_DEV_NAME*)&rem_name);
}
}
void btm_inq_remote_name_timer_timeout(UNUSED_ATTR void* data) {
btm_inq_rmt_name_failed();
}
/*******************************************************************************
*
* Function btm_inq_rmt_name_failed
*
* Description This function is if timeout expires while getting remote
* name. This is done for devices that incorrectly do not
* report operation failure
*
* Returns void
*
******************************************************************************/
void btm_inq_rmt_name_failed(void) {
BTM_TRACE_ERROR("btm_inq_rmt_name_failed() remname_active=%d",
btm_cb.btm_inq_vars.remname_active);
if (btm_cb.btm_inq_vars.remname_active)
btm_process_remote_name(&btm_cb.btm_inq_vars.remname_bda, NULL, 0,
HCI_ERR_UNSPECIFIED);
else
btm_process_remote_name(NULL, NULL, 0, HCI_ERR_UNSPECIFIED);
btm_sec_rmt_name_request_complete(NULL, NULL, HCI_ERR_UNSPECIFIED);
}
/*******************************************************************************
*
* Function btm_read_inq_tx_power_timeout
*
* Description Callback when reading the inquiry tx power times out.
*
* Returns void
*
******************************************************************************/
void btm_read_inq_tx_power_timeout(UNUSED_ATTR void* data) {
tBTM_CMPL_CB* p_cb = btm_cb.devcb.p_inq_tx_power_cmpl_cb;
btm_cb.devcb.p_inq_tx_power_cmpl_cb = NULL;
if (p_cb) (*p_cb)((void*)NULL);
}
/*******************************************************************************
*
* Function btm_read_inq_tx_power_complete
*
* Description read inquiry tx power level complete callback function.
*
* Returns void
*
******************************************************************************/
void btm_read_inq_tx_power_complete(uint8_t* p) {
tBTM_CMPL_CB* p_cb = btm_cb.devcb.p_inq_tx_power_cmpl_cb;
tBTM_INQ_TXPWR_RESULT result;
BTM_TRACE_DEBUG("%s", __func__);
alarm_cancel(btm_cb.devcb.read_inq_tx_power_timer);
btm_cb.devcb.p_inq_tx_power_cmpl_cb = NULL;
/* If there was a registered callback, call it */
if (p_cb) {
STREAM_TO_UINT8(result.hci_status, p);
if (result.hci_status == HCI_SUCCESS) {
result.status = BTM_SUCCESS;
STREAM_TO_UINT8(result.tx_power, p);
BTM_TRACE_EVENT(
"BTM INQ TX POWER Complete: tx_power %d, hci status 0x%02x",
result.tx_power, result.hci_status);
} else {
result.status = BTM_ERR_PROCESSING;
}
(*p_cb)(&result);
}
}
/*******************************************************************************
*
* Function BTM_WriteEIR
*
* Description This function is called to write EIR data to controller.
*
* Parameters p_buff - allocated HCI command buffer including extended
* inquriry response
*
* Returns BTM_SUCCESS - if successful
* BTM_MODE_UNSUPPORTED - if local device cannot support it
*
******************************************************************************/
tBTM_STATUS BTM_WriteEIR(BT_HDR* p_buff) {
if (controller_get_interface()->supports_extended_inquiry_response()) {
BTM_TRACE_API("Write Extended Inquiry Response to controller");
btsnd_hcic_write_ext_inquiry_response(p_buff, BTM_EIR_DEFAULT_FEC_REQUIRED);
return BTM_SUCCESS;
} else {
osi_free(p_buff);
return BTM_MODE_UNSUPPORTED;
}
}
/*******************************************************************************
*
* Function btm_convert_uuid_to_eir_service
*
* Description This function is called to get the bit position of UUID.
*
* Parameters uuid16 - UUID 16-bit
*
* Returns BTM EIR service ID if found
* BTM_EIR_MAX_SERVICES - if not found
*
******************************************************************************/
static uint8_t btm_convert_uuid_to_eir_service(uint16_t uuid16) {
uint8_t xx;
for (xx = 0; xx < BTM_EIR_MAX_SERVICES; xx++) {
if (uuid16 == BTM_EIR_UUID_LKUP_TBL[xx]) {
return xx;
}
}
return BTM_EIR_MAX_SERVICES;
}
/*******************************************************************************
*
* Function BTM_HasEirService
*
* Description This function is called to know if UUID in bit map of UUID.
*
* Parameters p_eir_uuid - bit map of UUID list
* uuid16 - UUID 16-bit
*
* Returns true - if found
* false - if not found
*
******************************************************************************/
bool BTM_HasEirService(uint32_t* p_eir_uuid, uint16_t uuid16) {
uint8_t service_id;
service_id = btm_convert_uuid_to_eir_service(uuid16);
if (service_id < BTM_EIR_MAX_SERVICES)
return (BTM_EIR_HAS_SERVICE(p_eir_uuid, service_id));
else
return (false);
}
/*******************************************************************************
*
* Function BTM_HasInquiryEirService
*
* Description This function is called to know if UUID in bit map of UUID
* list.
*
* Parameters p_results - inquiry results
* uuid16 - UUID 16-bit
*
* Returns BTM_EIR_FOUND - if found
* BTM_EIR_NOT_FOUND - if not found and it is complete list
* BTM_EIR_UNKNOWN - if not found and it is not complete list
*
******************************************************************************/
tBTM_EIR_SEARCH_RESULT BTM_HasInquiryEirService(tBTM_INQ_RESULTS* p_results,
uint16_t uuid16) {
if (BTM_HasEirService(p_results->eir_uuid, uuid16)) {
return BTM_EIR_FOUND;
} else if (p_results->eir_complete_list) {
return BTM_EIR_NOT_FOUND;
} else
return BTM_EIR_UNKNOWN;
}
/*******************************************************************************
*
* Function BTM_AddEirService
*
* Description This function is called to add a service in bit map of UUID
* list.
*
* Parameters p_eir_uuid - bit mask of UUID list for EIR
* uuid16 - UUID 16-bit
*
* Returns None
*
******************************************************************************/
void BTM_AddEirService(uint32_t* p_eir_uuid, uint16_t uuid16) {
uint8_t service_id;
service_id = btm_convert_uuid_to_eir_service(uuid16);
if (service_id < BTM_EIR_MAX_SERVICES)
BTM_EIR_SET_SERVICE(p_eir_uuid, service_id);
}
/*******************************************************************************
*
* Function BTM_RemoveEirService
*
* Description This function is called to remove a service in bit map of
* UUID list.
*
* Parameters p_eir_uuid - bit mask of UUID list for EIR
* uuid16 - UUID 16-bit
*
* Returns None
*
******************************************************************************/
void BTM_RemoveEirService(uint32_t* p_eir_uuid, uint16_t uuid16) {
uint8_t service_id;
service_id = btm_convert_uuid_to_eir_service(uuid16);
if (service_id < BTM_EIR_MAX_SERVICES)
BTM_EIR_CLR_SERVICE(p_eir_uuid, service_id);
}
/*******************************************************************************
*
* Function BTM_GetEirSupportedServices
*
* Description This function is called to get UUID list from bit map of
* UUID list.
*
* Parameters p_eir_uuid - bit mask of UUID list for EIR
* p - reference of current pointer of EIR
* max_num_uuid16 - max number of UUID can be written in EIR
* num_uuid16 - number of UUID have been written in EIR
*
* Returns BTM_EIR_MORE_16BITS_UUID_TYPE, if it has more than max
* BTM_EIR_COMPLETE_16BITS_UUID_TYPE, otherwise
*
******************************************************************************/
uint8_t BTM_GetEirSupportedServices(uint32_t* p_eir_uuid, uint8_t** p,
uint8_t max_num_uuid16,
uint8_t* p_num_uuid16) {
uint8_t service_index;
*p_num_uuid16 = 0;
for (service_index = 0; service_index < BTM_EIR_MAX_SERVICES;
service_index++) {
if (BTM_EIR_HAS_SERVICE(p_eir_uuid, service_index)) {
if (*p_num_uuid16 < max_num_uuid16) {
UINT16_TO_STREAM(*p, BTM_EIR_UUID_LKUP_TBL[service_index]);
(*p_num_uuid16)++;
}
/* if max number of UUIDs are stored and found one more */
else {
return BTM_EIR_MORE_16BITS_UUID_TYPE;
}
}
}
return BTM_EIR_COMPLETE_16BITS_UUID_TYPE;
}
/*******************************************************************************
*
* Function BTM_GetEirUuidList
*
* Description This function parses EIR and returns UUID list.
*
* Parameters p_eir - EIR
* eir_len - EIR len
* uuid_size - LEN_UUID_16, LEN_UUID_32, LEN_UUID_128
* p_num_uuid - return number of UUID in found list
* p_uuid_list - return UUID list
* max_num_uuid - maximum number of UUID to be returned
*
* Returns 0 - if not found
* BTM_EIR_COMPLETE_16BITS_UUID_TYPE
* BTM_EIR_MORE_16BITS_UUID_TYPE
* BTM_EIR_COMPLETE_32BITS_UUID_TYPE
* BTM_EIR_MORE_32BITS_UUID_TYPE
* BTM_EIR_COMPLETE_128BITS_UUID_TYPE
* BTM_EIR_MORE_128BITS_UUID_TYPE
*
******************************************************************************/
uint8_t BTM_GetEirUuidList(uint8_t* p_eir, size_t eir_len, uint8_t uuid_size,
uint8_t* p_num_uuid, uint8_t* p_uuid_list,
uint8_t max_num_uuid) {
const uint8_t* p_uuid_data;
uint8_t type;
uint8_t yy, xx;
uint16_t* p_uuid16 = (uint16_t*)p_uuid_list;
uint32_t* p_uuid32 = (uint32_t*)p_uuid_list;
char buff[LEN_UUID_128 * 2 + 1];
p_uuid_data =
btm_eir_get_uuid_list(p_eir, eir_len, uuid_size, p_num_uuid, &type);
if (p_uuid_data == NULL) {
return 0x00;
}
if (*p_num_uuid > max_num_uuid) {
BTM_TRACE_WARNING("%s: number of uuid in EIR = %d, size of uuid list = %d",
__func__, *p_num_uuid, max_num_uuid);
*p_num_uuid = max_num_uuid;
}
BTM_TRACE_DEBUG("%s: type = %02X, number of uuid = %d", __func__, type,
*p_num_uuid);
if (uuid_size == LEN_UUID_16) {
for (yy = 0; yy < *p_num_uuid; yy++) {
STREAM_TO_UINT16(*(p_uuid16 + yy), p_uuid_data);
BTM_TRACE_DEBUG(" 0x%04X", *(p_uuid16 + yy));
}
} else if (uuid_size == LEN_UUID_32) {
for (yy = 0; yy < *p_num_uuid; yy++) {
STREAM_TO_UINT32(*(p_uuid32 + yy), p_uuid_data);
BTM_TRACE_DEBUG(" 0x%08X", *(p_uuid32 + yy));
}
} else if (uuid_size == LEN_UUID_128) {
for (yy = 0; yy < *p_num_uuid; yy++) {
STREAM_TO_ARRAY16(p_uuid_list + yy * LEN_UUID_128, p_uuid_data);
for (xx = 0; xx < LEN_UUID_128; xx++)
snprintf(buff + xx * 2, sizeof(buff) - xx * 2, "%02X",
*(p_uuid_list + yy * LEN_UUID_128 + xx));
BTM_TRACE_DEBUG(" 0x%s", buff);
}
}
return type;
}
/*******************************************************************************
*
* Function btm_eir_get_uuid_list
*
* Description This function searches UUID list in EIR.
*
* Parameters p_eir - address of EIR
* eir_len - EIR length
* uuid_size - size of UUID to find
* p_num_uuid - number of UUIDs found
* p_uuid_list_type - EIR data type
*
* Returns NULL - if UUID list with uuid_size is not found
* beginning of UUID list in EIR - otherwise
*
******************************************************************************/
static const uint8_t* btm_eir_get_uuid_list(uint8_t* p_eir, size_t eir_len,
uint8_t uuid_size,
uint8_t* p_num_uuid,
uint8_t* p_uuid_list_type) {
const uint8_t* p_uuid_data;
uint8_t complete_type, more_type;
uint8_t uuid_len;
switch (uuid_size) {
case LEN_UUID_16:
complete_type = BTM_EIR_COMPLETE_16BITS_UUID_TYPE;
more_type = BTM_EIR_MORE_16BITS_UUID_TYPE;
break;
case LEN_UUID_32:
complete_type = BTM_EIR_COMPLETE_32BITS_UUID_TYPE;
more_type = BTM_EIR_MORE_32BITS_UUID_TYPE;
break;
case LEN_UUID_128:
complete_type = BTM_EIR_COMPLETE_128BITS_UUID_TYPE;
more_type = BTM_EIR_MORE_128BITS_UUID_TYPE;
break;
default:
*p_num_uuid = 0;
return NULL;
break;
}
p_uuid_data = AdvertiseDataParser::GetFieldByType(p_eir, eir_len,
complete_type, &uuid_len);
if (p_uuid_data == NULL) {
p_uuid_data = AdvertiseDataParser::GetFieldByType(p_eir, eir_len, more_type,
&uuid_len);
*p_uuid_list_type = more_type;
} else {
*p_uuid_list_type = complete_type;
}
*p_num_uuid = uuid_len / uuid_size;
return p_uuid_data;
}
/*******************************************************************************
*
* Function btm_convert_uuid_to_uuid16
*
* Description This function converts UUID to UUID 16-bit.
*
* Parameters p_uuid - address of UUID
* uuid_size - size of UUID
*
* Returns 0 - if UUID cannot be converted to UUID 16-bit
* UUID 16-bit - otherwise
*
******************************************************************************/
static uint16_t btm_convert_uuid_to_uuid16(const uint8_t* p_uuid,
uint8_t uuid_size) {
static const uint8_t base_uuid[LEN_UUID_128] = {
0xFB, 0x34, 0x9B, 0x5F, 0x80, 0x00, 0x00, 0x80,
0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint16_t uuid16 = 0;
uint32_t uuid32;
bool is_base_uuid;
uint8_t xx;
switch (uuid_size) {
case LEN_UUID_16:
STREAM_TO_UINT16(uuid16, p_uuid);
break;
case LEN_UUID_32:
STREAM_TO_UINT32(uuid32, p_uuid);
if (uuid32 < 0x10000) uuid16 = (uint16_t)uuid32;
break;
case LEN_UUID_128:
/* See if we can compress his UUID down to 16 or 32bit UUIDs */
is_base_uuid = true;
for (xx = 0; xx < LEN_UUID_128 - 4; xx++) {
if (p_uuid[xx] != base_uuid[xx]) {
is_base_uuid = false;
break;
}
}
if (is_base_uuid) {
if ((p_uuid[LEN_UUID_128 - 1] == 0) &&
(p_uuid[LEN_UUID_128 - 2] == 0)) {
p_uuid += (LEN_UUID_128 - 4);
STREAM_TO_UINT16(uuid16, p_uuid);
}
}
break;
default:
BTM_TRACE_WARNING("btm_convert_uuid_to_uuid16 invalid uuid size");
break;
}
return (uuid16);
}
/*******************************************************************************
*
* Function btm_set_eir_uuid
*
* Description This function is called to store received UUID into inquiry
* result.
*
* Parameters p_eir - pointer of EIR significant part
* p_results - pointer of inquiry result
*
* Returns None
*
******************************************************************************/
void btm_set_eir_uuid(uint8_t* p_eir, tBTM_INQ_RESULTS* p_results) {
const uint8_t* p_uuid_data;
uint8_t num_uuid;
uint16_t uuid16;
uint8_t yy;
uint8_t type = BTM_EIR_MORE_16BITS_UUID_TYPE;
p_uuid_data = btm_eir_get_uuid_list(p_eir, HCI_EXT_INQ_RESPONSE_LEN,
LEN_UUID_16, &num_uuid, &type);
if (type == BTM_EIR_COMPLETE_16BITS_UUID_TYPE) {
p_results->eir_complete_list = true;
} else {
p_results->eir_complete_list = false;
}
BTM_TRACE_API("btm_set_eir_uuid eir_complete_list=0x%02X",
p_results->eir_complete_list);
if (p_uuid_data) {
for (yy = 0; yy < num_uuid; yy++) {
STREAM_TO_UINT16(uuid16, p_uuid_data);
BTM_AddEirService(p_results->eir_uuid, uuid16);
}
}
p_uuid_data = btm_eir_get_uuid_list(p_eir, HCI_EXT_INQ_RESPONSE_LEN,
LEN_UUID_32, &num_uuid, &type);
if (p_uuid_data) {
for (yy = 0; yy < num_uuid; yy++) {
uuid16 = btm_convert_uuid_to_uuid16(p_uuid_data, LEN_UUID_32);
p_uuid_data += LEN_UUID_32;
if (uuid16) BTM_AddEirService(p_results->eir_uuid, uuid16);
}
}
p_uuid_data = btm_eir_get_uuid_list(p_eir, HCI_EXT_INQ_RESPONSE_LEN,
LEN_UUID_128, &num_uuid, &type);
if (p_uuid_data) {
for (yy = 0; yy < num_uuid; yy++) {
uuid16 = btm_convert_uuid_to_uuid16(p_uuid_data, LEN_UUID_128);
p_uuid_data += LEN_UUID_128;
if (uuid16) BTM_AddEirService(p_results->eir_uuid, uuid16);
}
}
}