kopia lustrzana https://github.com/espressif/esp-idf
741 wiersze
26 KiB
C
741 wiersze
26 KiB
C
/******************************************************************************
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*
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* Copyright (C) 1999-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This file contains functions for the Bluetooth Device Manager
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*
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******************************************************************************/
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#include <stdlib.h>
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#include <string.h>
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//#include <stdio.h>
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#include <stddef.h>
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#include "stack/bt_types.h"
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#include "device/controller.h"
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#include "stack/hcimsgs.h"
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#include "stack/btu.h"
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#include "stack/btm_api.h"
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#include "btm_int.h"
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#include "stack/hcidefs.h"
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#include "stack/l2c_api.h"
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static tBTM_SEC_DEV_REC *btm_find_oldest_dev (void);
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/*******************************************************************************
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**
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** Function BTM_SecAddDevice
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**
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** Description Add/modify device. This function will be normally called
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** during host startup to restore all required information
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** stored in the NVRAM.
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**
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** Parameters: bd_addr - BD address of the peer
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** dev_class - Device Class
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** bd_name - Name of the peer device. NULL if unknown.
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** features - Remote device's features (up to 3 pages). NULL if not known
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** trusted_mask - Bitwise OR of services that do not
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** require authorization. (array of UINT32)
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** link_key - Connection link key. NULL if unknown.
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**
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** Returns TRUE if added OK, else FALSE
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**
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*******************************************************************************/
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BOOLEAN BTM_SecAddDevice (BD_ADDR bd_addr, DEV_CLASS dev_class, BD_NAME bd_name,
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UINT8 *features, UINT32 trusted_mask[],
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LINK_KEY link_key, UINT8 key_type, tBTM_IO_CAP io_cap,
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UINT8 pin_length, UINT8 sc_support)
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{
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#if (SMP_INCLUDED == TRUE)
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tBTM_SEC_DEV_REC *p_dev_rec;
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int i, j;
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BOOLEAN found = FALSE;
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BTM_TRACE_API("%s, link key type:%x\n", __FUNCTION__, key_type);
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p_dev_rec = btm_find_dev (bd_addr);
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if (!p_dev_rec) {
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/* There is no device record, allocate one.
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* If we can not find an empty spot for this one, let it fail. */
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if (list_length(btm_cb.p_sec_dev_rec_list) < BTM_SEC_MAX_DEVICE_RECORDS) {
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p_dev_rec = (tBTM_SEC_DEV_REC *)osi_malloc(sizeof(tBTM_SEC_DEV_REC));
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if(p_dev_rec) {
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list_append(btm_cb.p_sec_dev_rec_list, p_dev_rec);
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/* Mark this record as in use and initialize */
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memset (p_dev_rec, 0, sizeof (tBTM_SEC_DEV_REC));
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p_dev_rec->sec_flags = BTM_SEC_IN_USE;
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memcpy (p_dev_rec->bd_addr, bd_addr, BD_ADDR_LEN);
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p_dev_rec->hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_BR_EDR);
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p_dev_rec->ble_hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_LE);
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#if BLE_INCLUDED == TRUE
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/* use default value for background connection params */
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/* update conn params, use default value for background connection params */
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memset(&p_dev_rec->conn_params, 0xff, sizeof(tBTM_LE_CONN_PRAMS));
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#endif
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}
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}
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if (!p_dev_rec) {
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return (FALSE);
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}
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}
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p_dev_rec->bond_type = BOND_TYPE_UNKNOWN; /* Default value */
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p_dev_rec->timestamp = btm_cb.dev_rec_count++;
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p_dev_rec->remote_secure_connection_previous_state = sc_support;
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if (dev_class) {
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memcpy (p_dev_rec->dev_class, dev_class, DEV_CLASS_LEN);
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}
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memset(p_dev_rec->sec_bd_name, 0, sizeof(tBTM_BD_NAME));
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if (bd_name && bd_name[0]) {
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p_dev_rec->sec_flags |= BTM_SEC_NAME_KNOWN;
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BCM_STRNCPY_S ((char *)p_dev_rec->sec_bd_name, (char *)bd_name, BTM_MAX_REM_BD_NAME_LEN);
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}
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p_dev_rec->num_read_pages = 0;
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if (features) {
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memcpy (p_dev_rec->features, features, sizeof (p_dev_rec->features));
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for (i = HCI_EXT_FEATURES_PAGE_MAX; i >= 0; i--) {
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for (j = 0; j < HCI_FEATURE_BYTES_PER_PAGE; j++) {
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if (p_dev_rec->features[i][j] != 0) {
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found = TRUE;
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break;
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}
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}
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if (found) {
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p_dev_rec->num_read_pages = i + 1;
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break;
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}
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}
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} else {
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memset (p_dev_rec->features, 0, sizeof (p_dev_rec->features));
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}
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BTM_SEC_COPY_TRUSTED_DEVICE(trusted_mask, p_dev_rec->trusted_mask);
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if (link_key) {
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BTM_TRACE_EVENT ("BTM_SecAddDevice() BDA: %02x:%02x:%02x:%02x:%02x:%02x\n",
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bd_addr[0], bd_addr[1], bd_addr[2],
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bd_addr[3], bd_addr[4], bd_addr[5]);
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p_dev_rec->sec_flags |= BTM_SEC_LINK_KEY_KNOWN;
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memcpy (p_dev_rec->link_key, link_key, LINK_KEY_LEN);
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p_dev_rec->link_key_type = key_type;
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p_dev_rec->pin_code_length = pin_length;
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if (pin_length >= 16 ||
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key_type == BTM_LKEY_TYPE_AUTH_COMB ||
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key_type == BTM_LKEY_TYPE_AUTH_COMB_P_256) {
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// Set the fiag if the link key was made by using either a 16 digit
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// pin or MITM.
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p_dev_rec->sec_flags |= BTM_SEC_16_DIGIT_PIN_AUTHED;
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}
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}
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#if defined(BTIF_MIXED_MODE_INCLUDED) && (BTIF_MIXED_MODE_INCLUDED == TRUE)
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if (key_type < BTM_MAX_PRE_SM4_LKEY_TYPE) {
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p_dev_rec->sm4 = BTM_SM4_KNOWN;
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} else {
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p_dev_rec->sm4 = BTM_SM4_TRUE;
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}
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#endif
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p_dev_rec->rmt_io_caps = io_cap;
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p_dev_rec->device_type |= BT_DEVICE_TYPE_BREDR;
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#endif ///SMP_INCLUDED == TRUE
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return (TRUE);
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}
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/*******************************************************************************
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**
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** Function BTM_SecDeleteDevice
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**
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** Description Free resources associated with the device.
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**
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** Parameters: bd_addr - BD address of the peer
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** transport - BT_TRANSPORT_BR_EDR or BT_TRANSPORT_LE
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**
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** Returns TRUE if removed OK, FALSE if not found or ACL link is active
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**
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*******************************************************************************/
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BOOLEAN BTM_SecDeleteDevice (BD_ADDR bd_addr, tBT_TRANSPORT transport)
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{
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tBTM_SEC_DEV_REC *p_dev_rec;
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if (BTM_IsAclConnectionUp(bd_addr, transport)) {
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BTM_TRACE_WARNING("%s FAILED: Cannot Delete when connection is active\n", __func__);
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return FALSE;
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}
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if ((p_dev_rec = btm_find_dev(bd_addr)) != NULL) {
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/* Tell controller to get rid of the link key, if it has one stored */
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BTM_DeleteStoredLinkKey (p_dev_rec->bd_addr, NULL);
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btm_sec_free_dev(p_dev_rec, transport);
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}
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return TRUE;
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}
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/*******************************************************************************
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**
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** Function BTM_SecClearSecurityFlags
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**
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** Description Reset the security flags (mark as not-paired) for a given
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** remove device.
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**
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*******************************************************************************/
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extern void BTM_SecClearSecurityFlags (BD_ADDR bd_addr)
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{
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tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(bd_addr);
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if (p_dev_rec == NULL) {
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return;
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}
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p_dev_rec->sec_flags = 0;
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p_dev_rec->sec_state = BTM_SEC_STATE_IDLE;
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p_dev_rec->sm4 = BTM_SM4_UNKNOWN;
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}
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/*******************************************************************************
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**
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** Function BTM_SecReadDevName
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**
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** Description Looks for the device name in the security database for the
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** specified BD address.
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**
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** Returns Pointer to the name or NULL
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**
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*******************************************************************************/
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char *BTM_SecReadDevName (BD_ADDR bd_addr)
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{
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char *p_name = NULL;
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tBTM_SEC_DEV_REC *p_srec;
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if ((p_srec = btm_find_dev(bd_addr)) != NULL) {
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p_name = (char *)p_srec->sec_bd_name;
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}
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return (p_name);
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}
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/*******************************************************************************
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**
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** Function btm_find_sec_dev_in_list
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**
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** Description Look for the record in the device database for the record
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** with specified address
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**
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** Returns Pointer to the record or NULL
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**
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*******************************************************************************/
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BOOLEAN btm_find_sec_dev_in_list (void *p_node_data, void *context)
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{
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tBTM_SEC_DEV_REC *p_sec_dev = (tBTM_SEC_DEV_REC *)p_node_data;
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BOOLEAN ret = TRUE;
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BOOLEAN dev_free = !(p_sec_dev->sec_flags & BTM_SEC_IN_USE);
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tSecDevContext *p_context = (tSecDevContext *)context;
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if (dev_free == p_context->free_check) {
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switch (p_context->type) {
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case SEC_DEV_BDA:
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if (!memcmp(p_context->context.p_bd_addr, p_sec_dev->bd_addr, BD_ADDR_LEN)) {
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ret = FALSE;
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}
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break;
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case SEC_DEV_HDL:
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if (p_context->context.handle == p_sec_dev->hci_handle
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#if BLE_INCLUDED == TRUE
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|| (p_context->context.handle == p_sec_dev->ble_hci_handle)
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#endif
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) {
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ret = FALSE;
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}
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break;
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#if BLE_PRIVACY_SPT == TRUE
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case SEC_DEV_ID_ADDR:
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if (!memcmp(p_context->context.p_bd_addr, p_sec_dev->ble.static_addr, BD_ADDR_LEN)) {
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ret = FALSE;
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}
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break;
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#endif //BLE_PRIVACY_SPT == TRUE
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case SEC_DEV_BTDM_BDA:
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if (!memcmp(p_context->context.p_bd_addr, p_sec_dev->bd_addr, BD_ADDR_LEN)) {
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ret = FALSE;
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}
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#if BLE_INCLUDED == TRUE
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// If a LE random address is looking for device record
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if (!memcmp(p_sec_dev->ble.pseudo_addr, p_context->context.p_bd_addr, BD_ADDR_LEN)) {
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ret = FALSE;
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}
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if (btm_ble_addr_resolvable(p_context->context.p_bd_addr, p_sec_dev)) {
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ret = FALSE;
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}
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#endif
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break;
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default:
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break;
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}
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}
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return ret;
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}
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/*******************************************************************************
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**
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** Function btm_sec_alloc_dev
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**
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** Description Look for the record in the device database for the record
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** with specified address
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**
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** Returns Pointer to the record or NULL
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**
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*******************************************************************************/
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tBTM_SEC_DEV_REC *btm_sec_alloc_dev (BD_ADDR bd_addr)
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{
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tBTM_SEC_DEV_REC *p_dev_rec = NULL;
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tBTM_SEC_DEV_REC *p_dev_new_rec = NULL;
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tBTM_SEC_DEV_REC *p_dev_old_rec = NULL;
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tBTM_INQ_INFO *p_inq_info;
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list_node_t *p_node = NULL;
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BOOLEAN new_entry_found = FALSE;
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BOOLEAN old_entry_found = FALSE;
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BOOLEAN malloc_new_entry = FALSE;
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BTM_TRACE_EVENT ("btm_sec_alloc_dev\n");
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for (p_node = list_begin(btm_cb.p_sec_dev_rec_list); p_node; p_node = list_next(p_node)) {
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p_dev_old_rec = list_node(p_node);
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/* look for old entry which match the bd_addr and the BTM_SEC_IN_USE is cleared */
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if (!(p_dev_old_rec->sec_flags & BTM_SEC_IN_USE) &&
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(!memcmp (p_dev_old_rec->bd_addr, bd_addr, BD_ADDR_LEN))) {
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old_entry_found = TRUE;
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BTM_TRACE_EVENT ("btm_sec_alloc_dev old device found\n");
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break;
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}
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}
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for (p_node = list_begin(btm_cb.p_sec_dev_rec_list); p_node; p_node = list_next(p_node)) {
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p_dev_new_rec = list_node(p_node);
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/* find the first entry whose BTM_SEC_IN_USE is cleared */
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if (!(p_dev_new_rec->sec_flags & BTM_SEC_IN_USE)) {
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new_entry_found = TRUE;
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break;
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}
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}
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if (!new_entry_found) {
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/* We can not find new device. We need malloc a new one if p_sec_dev_rec_list is not full */
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if (list_length(btm_cb.p_sec_dev_rec_list) < BTM_SEC_MAX_DEVICE_RECORDS){
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p_dev_new_rec = (tBTM_SEC_DEV_REC *)osi_malloc(sizeof(tBTM_SEC_DEV_REC));
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if (p_dev_new_rec) {
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new_entry_found = TRUE;
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malloc_new_entry = TRUE;
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} else {
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return NULL;
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}
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}
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}
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if (!new_entry_found) {
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p_dev_rec = btm_find_oldest_dev();
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} else {
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/* if the old device entry not present go with new entry */
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if (old_entry_found) {
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p_dev_rec = p_dev_old_rec;
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if (malloc_new_entry) {
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osi_free(p_dev_new_rec);
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}
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} else {
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if (malloc_new_entry) {
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list_append(btm_cb.p_sec_dev_rec_list, p_dev_new_rec);
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}
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p_dev_rec = p_dev_new_rec;
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}
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}
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memset (p_dev_rec, 0, sizeof (tBTM_SEC_DEV_REC));
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p_dev_rec->bond_type = BOND_TYPE_UNKNOWN; /* Default value */
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p_dev_rec->sec_flags = BTM_SEC_IN_USE;
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/* Check with the BT manager if details about remote device are known */
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/* outgoing connection */
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if ((p_inq_info = BTM_InqDbRead(bd_addr)) != NULL) {
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memcpy (p_dev_rec->dev_class, p_inq_info->results.dev_class, DEV_CLASS_LEN);
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#if BLE_INCLUDED == TRUE
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p_dev_rec->device_type = p_inq_info->results.device_type;
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p_dev_rec->ble.ble_addr_type = p_inq_info->results.ble_addr_type;
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/* update conn params, use default value for background connection params */
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memset(&p_dev_rec->conn_params, 0xff, sizeof(tBTM_LE_CONN_PRAMS));
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#endif
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} else {
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#if BLE_INCLUDED == TRUE
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/* update conn params, use default value for background connection params */
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memset(&p_dev_rec->conn_params, 0xff, sizeof(tBTM_LE_CONN_PRAMS));
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#endif
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if (!memcmp (bd_addr, btm_cb.connecting_bda, BD_ADDR_LEN)) {
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memcpy (p_dev_rec->dev_class, btm_cb.connecting_dc, DEV_CLASS_LEN);
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}
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}
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memcpy (p_dev_rec->bd_addr, bd_addr, BD_ADDR_LEN);
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#if BLE_INCLUDED == TRUE
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p_dev_rec->ble_hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_LE);
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#endif
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p_dev_rec->hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_BR_EDR);
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p_dev_rec->timestamp = btm_cb.dev_rec_count++;
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return (p_dev_rec);
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}
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/*******************************************************************************
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**
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** Function btm_sec_free_dev
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**
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** Description Mark device record as not used
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**
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*******************************************************************************/
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void btm_sec_free_dev (tBTM_SEC_DEV_REC *p_dev_rec, tBT_TRANSPORT transport)
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{
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if (transport == BT_TRANSPORT_BR_EDR) {
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memset(p_dev_rec->link_key, 0, LINK_KEY_LEN);
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p_dev_rec->sec_flags &= ~(BTM_SEC_AUTHORIZED | BTM_SEC_AUTHENTICATED
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| BTM_SEC_ENCRYPTED | BTM_SEC_NAME_KNOWN
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| BTM_SEC_LINK_KEY_KNOWN | BTM_SEC_LINK_KEY_AUTHED
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| BTM_SEC_ROLE_SWITCHED | BTM_SEC_16_DIGIT_PIN_AUTHED);
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} else if (transport == BT_TRANSPORT_LE) {
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p_dev_rec->bond_type = BOND_TYPE_UNKNOWN;
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p_dev_rec->sec_flags &= ~(BTM_SEC_LE_AUTHENTICATED | BTM_SEC_LE_ENCRYPTED
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| BTM_SEC_LE_NAME_KNOWN | BTM_SEC_LE_LINK_KEY_KNOWN
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| BTM_SEC_LE_LINK_KEY_AUTHED | BTM_SEC_ROLE_SWITCHED);
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#if BLE_INCLUDED == TRUE
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/* Clear out any saved BLE keys */
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btm_sec_clear_ble_keys (p_dev_rec);
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#endif
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} else {
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p_dev_rec->bond_type = BOND_TYPE_UNKNOWN;
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memset(p_dev_rec->link_key, 0, LINK_KEY_LEN);
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p_dev_rec->sec_flags = 0;
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#if BLE_INCLUDED == TRUE
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/* Clear out any saved BLE keys */
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btm_sec_clear_ble_keys (p_dev_rec);
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#endif
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}
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/* No BLE keys and BT keys, clear the sec_flags */
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if(p_dev_rec->sec_flags == BTM_SEC_IN_USE) {
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p_dev_rec->sec_flags = 0;
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}
|
|
list_remove(btm_cb.p_sec_dev_rec_list, p_dev_rec);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_dev_support_switch
|
|
**
|
|
** Description This function is called by the L2CAP to check if remote
|
|
** device supports role switch
|
|
**
|
|
** Parameters: bd_addr - Address of the peer device
|
|
**
|
|
** Returns TRUE if device is known and role switch is supported
|
|
**
|
|
*******************************************************************************/
|
|
BOOLEAN btm_dev_support_switch (BD_ADDR bd_addr)
|
|
{
|
|
tBTM_SEC_DEV_REC *p_dev_rec;
|
|
UINT8 xx;
|
|
BOOLEAN feature_empty = TRUE;
|
|
|
|
#if BTM_SCO_INCLUDED == TRUE
|
|
/* Role switch is not allowed if a SCO is up */
|
|
if (btm_is_sco_active_by_bdaddr(bd_addr)) {
|
|
return (FALSE);
|
|
}
|
|
#endif
|
|
p_dev_rec = btm_find_dev (bd_addr);
|
|
if (p_dev_rec && controller_get_interface()->supports_master_slave_role_switch()) {
|
|
if (HCI_SWITCH_SUPPORTED(p_dev_rec->features[HCI_EXT_FEATURES_PAGE_0])) {
|
|
BTM_TRACE_DEBUG("btm_dev_support_switch return TRUE (feature found)\n");
|
|
return (TRUE);
|
|
}
|
|
|
|
/* If the feature field is all zero, we never received them */
|
|
for (xx = 0 ; xx < BD_FEATURES_LEN ; xx++) {
|
|
if (p_dev_rec->features[HCI_EXT_FEATURES_PAGE_0][xx] != 0x00) {
|
|
feature_empty = FALSE; /* at least one is != 0 */
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If we don't know peer's capabilities, assume it supports Role-switch */
|
|
if (feature_empty) {
|
|
BTM_TRACE_DEBUG("btm_dev_support_switch return TRUE (feature empty)\n");
|
|
return (TRUE);
|
|
}
|
|
}
|
|
|
|
BTM_TRACE_DEBUG("btm_dev_support_switch return FALSE\n");
|
|
return (FALSE);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_find_dev_by_handle
|
|
**
|
|
** Description Look for the record in the device database for the record
|
|
** with specified handle
|
|
**
|
|
** Returns Pointer to the record or NULL
|
|
**
|
|
*******************************************************************************/
|
|
tBTM_SEC_DEV_REC *btm_find_dev_by_handle (UINT16 handle)
|
|
{
|
|
tBTM_SEC_DEV_REC *p_dev_rec = NULL;
|
|
list_node_t *p_node = NULL;
|
|
tSecDevContext context;
|
|
context.type = SEC_DEV_HDL;
|
|
context.context.handle = handle;
|
|
context.free_check = FALSE;
|
|
|
|
p_node = list_foreach(btm_cb.p_sec_dev_rec_list, btm_find_sec_dev_in_list, &context);
|
|
if (p_node) {
|
|
p_dev_rec = list_node(p_node);
|
|
}
|
|
return (p_dev_rec);
|
|
}
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_find_dev
|
|
**
|
|
** Description Look for the record in the device database for the record
|
|
** with specified BD address
|
|
**
|
|
** Returns Pointer to the record or NULL
|
|
**
|
|
*******************************************************************************/
|
|
tBTM_SEC_DEV_REC *btm_find_dev(BD_ADDR bd_addr)
|
|
{
|
|
if(bd_addr) {
|
|
list_node_t *p_node = NULL;
|
|
tSecDevContext context;
|
|
context.type = SEC_DEV_BTDM_BDA;
|
|
context.context.p_bd_addr = bd_addr;
|
|
context.free_check = FALSE;
|
|
p_node = list_foreach(btm_cb.p_sec_dev_rec_list, btm_find_sec_dev_in_list, &context);
|
|
if (p_node) {
|
|
return(list_node(p_node));
|
|
}
|
|
}
|
|
return (NULL);
|
|
}
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_consolidate_dev
|
|
**
|
|
** Description combine security records if identified as same peer
|
|
**
|
|
** Returns none
|
|
**
|
|
*******************************************************************************/
|
|
void btm_consolidate_dev(tBTM_SEC_DEV_REC *p_target_rec)
|
|
{
|
|
#if BLE_INCLUDED == TRUE && SMP_INCLUDED == TRUE
|
|
tBTM_SEC_DEV_REC *p_dev_rec = NULL;
|
|
tBTM_SEC_DEV_REC temp_rec = *p_target_rec;
|
|
list_node_t *p_node = NULL;
|
|
BTM_TRACE_DEBUG("%s\n", __func__);
|
|
|
|
for (p_node = list_begin(btm_cb.p_sec_dev_rec_list); p_node; p_node = list_next(p_node)) {
|
|
p_dev_rec = list_node(p_node);
|
|
if (p_target_rec != p_dev_rec && p_dev_rec->sec_flags & BTM_SEC_IN_USE) {
|
|
if (!memcmp (p_dev_rec->bd_addr, p_target_rec->bd_addr, BD_ADDR_LEN)) {
|
|
memcpy(p_target_rec, p_dev_rec, sizeof(tBTM_SEC_DEV_REC));
|
|
p_target_rec->ble = temp_rec.ble;
|
|
p_target_rec->ble_hci_handle = temp_rec.ble_hci_handle;
|
|
p_target_rec->enc_key_size = temp_rec.enc_key_size;
|
|
p_target_rec->conn_params = temp_rec.conn_params;
|
|
p_target_rec->device_type |= temp_rec.device_type;
|
|
p_target_rec->sec_flags |= temp_rec.sec_flags;
|
|
|
|
p_target_rec->new_encryption_key_is_p256 = temp_rec.new_encryption_key_is_p256;
|
|
p_target_rec->no_smp_on_br = temp_rec.no_smp_on_br;
|
|
p_target_rec->bond_type = temp_rec.bond_type;
|
|
/* Remove the unused device from the list */
|
|
list_remove(btm_cb.p_sec_dev_rec_list, p_dev_rec);
|
|
break;
|
|
}
|
|
|
|
/* an RPA device entry is a duplicate of the target record */
|
|
if (btm_ble_addr_resolvable(p_dev_rec->bd_addr, p_target_rec)) {
|
|
if (memcmp(p_target_rec->ble.pseudo_addr, p_dev_rec->bd_addr, BD_ADDR_LEN) == 0) {
|
|
p_target_rec->ble.ble_addr_type = p_dev_rec->ble.ble_addr_type;
|
|
p_target_rec->device_type |= p_dev_rec->device_type;
|
|
/* Remove the unused device from the list */
|
|
list_remove(btm_cb.p_sec_dev_rec_list, p_dev_rec);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_find_or_alloc_dev
|
|
**
|
|
** Description Look for the record in the device database for the record
|
|
** with specified BD address
|
|
**
|
|
** Returns Pointer to the record or NULL
|
|
**
|
|
*******************************************************************************/
|
|
tBTM_SEC_DEV_REC *btm_find_or_alloc_dev (BD_ADDR bd_addr)
|
|
{
|
|
tBTM_SEC_DEV_REC *p_dev_rec;
|
|
BTM_TRACE_EVENT ("btm_find_or_alloc_dev\n");
|
|
if ((p_dev_rec = btm_find_dev (bd_addr)) == NULL) {
|
|
|
|
/* Allocate a new device record or reuse the oldest one */
|
|
p_dev_rec = btm_sec_alloc_dev (bd_addr);
|
|
}
|
|
return (p_dev_rec);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_find_oldest_dev
|
|
**
|
|
** Description Locates the oldest device in use. It first looks for
|
|
** the oldest non-paired device. If all devices are paired it
|
|
** deletes the oldest paired device.
|
|
**
|
|
** Returns Pointer to the record or NULL
|
|
**
|
|
*******************************************************************************/
|
|
tBTM_SEC_DEV_REC *btm_find_oldest_dev (void)
|
|
{
|
|
tBTM_SEC_DEV_REC *p_dev_rec = NULL;
|
|
tBTM_SEC_DEV_REC *p_oldest = NULL;
|
|
list_node_t *p_node = NULL;
|
|
UINT32 ot = 0xFFFFFFFF;
|
|
|
|
/* First look for the non-paired devices for the oldest entry */
|
|
for (p_node = list_begin(btm_cb.p_sec_dev_rec_list); p_node; p_node = list_next(p_node)) {
|
|
p_dev_rec = list_node(p_node);
|
|
if (((p_dev_rec->sec_flags & BTM_SEC_IN_USE) == 0)
|
|
|| ((p_dev_rec->sec_flags & (BTM_SEC_LINK_KEY_KNOWN | BTM_SEC_LE_LINK_KEY_KNOWN)) != 0)) {
|
|
continue; /* Device is paired so skip it */
|
|
}
|
|
|
|
if (p_dev_rec->timestamp < ot) {
|
|
p_oldest = p_dev_rec;
|
|
ot = p_dev_rec->timestamp;
|
|
}
|
|
}
|
|
|
|
if (ot != 0xFFFFFFFF) {
|
|
return (p_oldest);
|
|
}
|
|
|
|
/* All devices are paired; find the oldest */
|
|
for (p_node = list_begin(btm_cb.p_sec_dev_rec_list); p_node; p_node = list_next(p_node)) {
|
|
if ((p_dev_rec->sec_flags & BTM_SEC_IN_USE) == 0) {
|
|
continue;
|
|
}
|
|
|
|
if (p_dev_rec->timestamp < ot) {
|
|
p_oldest = p_dev_rec;
|
|
ot = p_dev_rec->timestamp;
|
|
}
|
|
}
|
|
return (p_oldest);
|
|
}
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_get_bond_type_dev
|
|
**
|
|
** Description Get the bond type for a device in the device database
|
|
** with specified BD address
|
|
**
|
|
** Returns The device bond type if known, otherwise BOND_TYPE_UNKNOWN
|
|
**
|
|
*******************************************************************************/
|
|
tBTM_BOND_TYPE btm_get_bond_type_dev(BD_ADDR bd_addr)
|
|
{
|
|
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(bd_addr);
|
|
|
|
if (p_dev_rec == NULL) {
|
|
return BOND_TYPE_UNKNOWN;
|
|
}
|
|
|
|
return p_dev_rec->bond_type;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_set_bond_type_dev
|
|
**
|
|
** Description Set the bond type for a device in the device database
|
|
** with specified BD address
|
|
**
|
|
** Returns TRUE on success, otherwise FALSE
|
|
**
|
|
*******************************************************************************/
|
|
BOOLEAN btm_set_bond_type_dev(BD_ADDR bd_addr, tBTM_BOND_TYPE bond_type)
|
|
{
|
|
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(bd_addr);
|
|
|
|
if (p_dev_rec == NULL) {
|
|
return FALSE;
|
|
}
|
|
|
|
p_dev_rec->bond_type = bond_type;
|
|
return TRUE;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_sec_dev_init
|
|
**
|
|
** Description Create new linked list for dynamic allocation on sec_dev_rec
|
|
**
|
|
*******************************************************************************/
|
|
void btm_sec_dev_init(void)
|
|
{
|
|
btm_cb.p_sec_dev_rec_list = list_new(osi_free_func);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_sec_dev_free
|
|
**
|
|
** Description Delete sec_dev_rec list when btm_cb is being released
|
|
**
|
|
*******************************************************************************/
|
|
void btm_sec_dev_free(void)
|
|
{
|
|
list_free(btm_cb.p_sec_dev_rec_list);
|
|
}
|