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      1 /******************************************************************************
      2  *
      3  *  Copyright (c) 2014 The Android Open Source Project
      4  *  Copyright 2009-2012 Broadcom Corporation
      5  *
      6  *  Licensed under the Apache License, Version 2.0 (the "License");
      7  *  you may not use this file except in compliance with the License.
      8  *  You may obtain a copy of the License at:
      9  *
     10  *  http://www.apache.org/licenses/LICENSE-2.0
     11  *
     12  *  Unless required by applicable law or agreed to in writing, software
     13  *  distributed under the License is distributed on an "AS IS" BASIS,
     14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15  *  See the License for the specific language governing permissions and
     16  *  limitations under the License.
     17  *
     18  ******************************************************************************/
     19 
     20 /*******************************************************************************
     21  *
     22  *  Filename:      btif_storage.c
     23  *
     24  *  Description:   Stores the local BT adapter and remote device properties in
     25  *                 NVRAM storage, typically as xml file in the
     26  *                 mobile's filesystem
     27  *
     28  *
     29  */
     30 
     31 #define LOG_TAG "bt_btif_storage"
     32 
     33 #include "btif_storage.h"
     34 
     35 #include <alloca.h>
     36 #include <base/logging.h>
     37 #include <ctype.h>
     38 #include <stdlib.h>
     39 #include <string.h>
     40 #include <time.h>
     41 
     42 #include "bt_common.h"
     43 #include "bta_closure_api.h"
     44 #include "bta_hd_api.h"
     45 #include "bta_hearing_aid_api.h"
     46 #include "bta_hh_api.h"
     47 #include "btif_api.h"
     48 #include "btif_config.h"
     49 #include "btif_hd.h"
     50 #include "btif_hh.h"
     51 #include "btif_util.h"
     52 #include "device/include/controller.h"
     53 #include "osi/include/allocator.h"
     54 #include "osi/include/compat.h"
     55 #include "osi/include/config.h"
     56 #include "osi/include/log.h"
     57 #include "osi/include/osi.h"
     58 
     59 using base::Bind;
     60 using bluetooth::Uuid;
     61 
     62 /*******************************************************************************
     63  *  Constants & Macros
     64  ******************************************************************************/
     65 
     66 // TODO(armansito): Find a better way than using a hardcoded path.
     67 #define BTIF_STORAGE_PATH_BLUEDROID "/data/misc/bluedroid"
     68 
     69 //#define BTIF_STORAGE_PATH_ADAPTER_INFO "adapter_info"
     70 //#define BTIF_STORAGE_PATH_REMOTE_DEVICES "remote_devices"
     71 #define BTIF_STORAGE_PATH_REMOTE_DEVTIME "Timestamp"
     72 #define BTIF_STORAGE_PATH_REMOTE_DEVCLASS "DevClass"
     73 #define BTIF_STORAGE_PATH_REMOTE_DEVTYPE "DevType"
     74 #define BTIF_STORAGE_PATH_REMOTE_NAME "Name"
     75 #define BTIF_STORAGE_PATH_REMOTE_VER_MFCT "Manufacturer"
     76 #define BTIF_STORAGE_PATH_REMOTE_VER_VER "LmpVer"
     77 #define BTIF_STORAGE_PATH_REMOTE_VER_SUBVER "LmpSubVer"
     78 
     79 //#define BTIF_STORAGE_PATH_REMOTE_LINKKEYS "remote_linkkeys"
     80 #define BTIF_STORAGE_PATH_REMOTE_ALIASE "Aliase"
     81 #define BTIF_STORAGE_PATH_REMOTE_SERVICE "Service"
     82 #define BTIF_STORAGE_PATH_REMOTE_HIDINFO "HidInfo"
     83 #define BTIF_STORAGE_KEY_ADAPTER_NAME "Name"
     84 #define BTIF_STORAGE_KEY_ADAPTER_SCANMODE "ScanMode"
     85 #define BTIF_STORAGE_KEY_ADAPTER_DISC_TIMEOUT "DiscoveryTimeout"
     86 
     87 /* This is a local property to add a device found */
     88 #define BT_PROPERTY_REMOTE_DEVICE_TIMESTAMP 0xFF
     89 
     90 // TODO: This macro should be converted to a function
     91 #define BTIF_STORAGE_GET_ADAPTER_PROP(s, t, v, l, p) \
     92   do {                                               \
     93     (p).type = (t);                                  \
     94     (p).val = (v);                                   \
     95     (p).len = (l);                                   \
     96     (s) = btif_storage_get_adapter_property(&(p));   \
     97   } while (0)
     98 
     99 // TODO: This macro should be converted to a function
    100 #define BTIF_STORAGE_GET_REMOTE_PROP(b, t, v, l, p)     \
    101   do {                                                  \
    102     (p).type = (t);                                     \
    103     (p).val = (v);                                      \
    104     (p).len = (l);                                      \
    105     btif_storage_get_remote_device_property((b), &(p)); \
    106   } while (0)
    107 
    108 #define STORAGE_BDADDR_STRING_SZ (18) /* 00:11:22:33:44:55 */
    109 #define STORAGE_UUID_STRING_SIZE \
    110   (36 + 1) /* 00001200-0000-1000-8000-00805f9b34fb; */
    111 #define STORAGE_PINLEN_STRING_MAX_SIZE (2)  /* ascii pinlen max chars */
    112 #define STORAGE_KEYTYPE_STRING_MAX_SIZE (1) /* ascii keytype max chars */
    113 
    114 #define STORAGE_KEY_TYPE_MAX (10)
    115 
    116 #define STORAGE_HID_ATRR_MASK_SIZE (4)
    117 #define STORAGE_HID_SUB_CLASS_SIZE (2)
    118 #define STORAGE_HID_APP_ID_SIZE (2)
    119 #define STORAGE_HID_VENDOR_ID_SIZE (4)
    120 #define STORAGE_HID_PRODUCT_ID_SIZE (4)
    121 #define STORAGE_HID_VERSION_SIZE (4)
    122 #define STORAGE_HID_CTRY_CODE_SIZE (2)
    123 #define STORAGE_HID_DESC_LEN_SIZE (4)
    124 #define STORAGE_HID_DESC_MAX_SIZE (2 * 512)
    125 
    126 /* <18 char bd addr> <space> LIST< <36 char uuid> <;> > <keytype (dec)> <pinlen>
    127  */
    128 #define BTIF_REMOTE_SERVICES_ENTRY_SIZE_MAX      \
    129   (STORAGE_BDADDR_STRING_SZ + 1 +                \
    130    STORAGE_UUID_STRING_SIZE * BT_MAX_NUM_UUIDS + \
    131    STORAGE_PINLEN_STRING_MAX_SIZE + STORAGE_KEYTYPE_STRING_MAX_SIZE)
    132 
    133 #define STORAGE_REMOTE_LINKKEYS_ENTRY_SIZE (LINK_KEY_LEN * 2 + 1 + 2 + 1 + 2)
    134 
    135 /* <18 char bd addr> <space>LIST <attr_mask> <space> > <sub_class> <space>
    136    <app_id> <space>
    137                                 <vendor_id> <space> > <product_id> <space>
    138    <version> <space>
    139                                 <ctry_code> <space> > <desc_len> <space>
    140    <desc_list> <space> */
    141 #define BTIF_HID_INFO_ENTRY_SIZE_MAX                                  \
    142   (STORAGE_BDADDR_STRING_SZ + 1 + STORAGE_HID_ATRR_MASK_SIZE + 1 +    \
    143    STORAGE_HID_SUB_CLASS_SIZE + 1 + STORAGE_HID_APP_ID_SIZE + 1 +     \
    144    STORAGE_HID_VENDOR_ID_SIZE + 1 + STORAGE_HID_PRODUCT_ID_SIZE + 1 + \
    145    STORAGE_HID_VERSION_SIZE + 1 + STORAGE_HID_CTRY_CODE_SIZE + 1 +    \
    146    STORAGE_HID_DESC_LEN_SIZE + 1 + STORAGE_HID_DESC_MAX_SIZE + 1)
    147 
    148 /* currently remote services is the potentially largest entry */
    149 #define BTIF_STORAGE_MAX_LINE_SZ BTIF_REMOTE_SERVICES_ENTRY_SIZE_MAX
    150 
    151 /* check against unv max entry size at compile time */
    152 #if (BTIF_STORAGE_ENTRY_MAX_SIZE > UNV_MAXLINE_LENGTH)
    153 #error "btif storage entry size exceeds unv max line size"
    154 #endif
    155 
    156 /*******************************************************************************
    157  *  Local type definitions
    158  ******************************************************************************/
    159 typedef struct {
    160   uint32_t num_devices;
    161   RawAddress devices[BTM_SEC_MAX_DEVICE_RECORDS];
    162 } btif_bonded_devices_t;
    163 
    164 /*******************************************************************************
    165  *  External functions
    166  ******************************************************************************/
    167 
    168 extern void btif_gatts_add_bonded_dev_from_nv(const RawAddress& bda);
    169 
    170 /*******************************************************************************
    171  *  Internal Functions
    172  ******************************************************************************/
    173 
    174 static bt_status_t btif_in_fetch_bonded_ble_device(
    175     const std::string& remote_bd_addr, int add,
    176     btif_bonded_devices_t* p_bonded_devices);
    177 static bt_status_t btif_in_fetch_bonded_device(const std::string& bdstr);
    178 
    179 static bool btif_has_ble_keys(const std::string& bdstr);
    180 
    181 /*******************************************************************************
    182  *  Static functions
    183  ******************************************************************************/
    184 
    185 static int prop2cfg(const RawAddress* remote_bd_addr, bt_property_t* prop) {
    186   std::string bdstr;
    187   if (remote_bd_addr) {
    188     bdstr = remote_bd_addr->ToString();
    189   }
    190 
    191   BTIF_TRACE_DEBUG("in, bd addr:%s, prop type:%d, len:%d", bdstr.c_str(),
    192                    prop->type, prop->len);
    193   char value[1024];
    194   if (prop->len <= 0 || prop->len > (int)sizeof(value) - 1) {
    195     BTIF_TRACE_ERROR("property type:%d, len:%d is invalid", prop->type,
    196                      prop->len);
    197     return false;
    198   }
    199   switch (prop->type) {
    200     case BT_PROPERTY_REMOTE_DEVICE_TIMESTAMP:
    201       btif_config_set_int(bdstr, BTIF_STORAGE_PATH_REMOTE_DEVTIME,
    202                           (int)time(NULL));
    203       break;
    204     case BT_PROPERTY_BDNAME: {
    205       int name_length = prop->len > BTM_MAX_LOC_BD_NAME_LEN
    206                             ? BTM_MAX_LOC_BD_NAME_LEN
    207                             : prop->len;
    208       strncpy(value, (char*)prop->val, name_length);
    209       value[name_length] = '\0';
    210       if (remote_bd_addr)
    211         btif_config_set_str(bdstr, BTIF_STORAGE_PATH_REMOTE_NAME, value);
    212       else
    213         btif_config_set_str("Adapter", BTIF_STORAGE_KEY_ADAPTER_NAME, value);
    214       break;
    215     }
    216     case BT_PROPERTY_REMOTE_FRIENDLY_NAME:
    217       strncpy(value, (char*)prop->val, prop->len);
    218       value[prop->len] = '\0';
    219       btif_config_set_str(bdstr, BTIF_STORAGE_PATH_REMOTE_ALIASE, value);
    220       break;
    221     case BT_PROPERTY_ADAPTER_SCAN_MODE:
    222       btif_config_set_int("Adapter", BTIF_STORAGE_KEY_ADAPTER_SCANMODE,
    223                           *(int*)prop->val);
    224       break;
    225     case BT_PROPERTY_ADAPTER_DISCOVERY_TIMEOUT:
    226       btif_config_set_int("Adapter", BTIF_STORAGE_KEY_ADAPTER_DISC_TIMEOUT,
    227                           *(int*)prop->val);
    228       break;
    229     case BT_PROPERTY_CLASS_OF_DEVICE:
    230       btif_config_set_int(bdstr, BTIF_STORAGE_PATH_REMOTE_DEVCLASS,
    231                           *(int*)prop->val);
    232       break;
    233     case BT_PROPERTY_TYPE_OF_DEVICE:
    234       btif_config_set_int(bdstr, BTIF_STORAGE_PATH_REMOTE_DEVTYPE,
    235                           *(int*)prop->val);
    236       break;
    237     case BT_PROPERTY_UUIDS: {
    238       std::string val;
    239       size_t cnt = (prop->len) / sizeof(Uuid);
    240       for (size_t i = 0; i < cnt; i++) {
    241         val += (reinterpret_cast<Uuid*>(prop->val) + i)->ToString() + " ";
    242       }
    243       btif_config_set_str(bdstr, BTIF_STORAGE_PATH_REMOTE_SERVICE, val);
    244       break;
    245     }
    246     case BT_PROPERTY_REMOTE_VERSION_INFO: {
    247       bt_remote_version_t* info = (bt_remote_version_t*)prop->val;
    248 
    249       if (!info) return false;
    250 
    251       btif_config_set_int(bdstr, BTIF_STORAGE_PATH_REMOTE_VER_MFCT,
    252                           info->manufacturer);
    253       btif_config_set_int(bdstr, BTIF_STORAGE_PATH_REMOTE_VER_VER,
    254                           info->version);
    255       btif_config_set_int(bdstr, BTIF_STORAGE_PATH_REMOTE_VER_SUBVER,
    256                           info->sub_ver);
    257     } break;
    258 
    259     default:
    260       BTIF_TRACE_ERROR("Unknown prop type:%d", prop->type);
    261       return false;
    262   }
    263 
    264   /* No need to look for bonded device with address of NULL */
    265   if (remote_bd_addr &&
    266       btif_in_fetch_bonded_device(bdstr) == BT_STATUS_SUCCESS) {
    267     /* save changes if the device was bonded */
    268     btif_config_flush();
    269   }
    270 
    271   return true;
    272 }
    273 
    274 static int cfg2prop(const RawAddress* remote_bd_addr, bt_property_t* prop) {
    275   std::string bdstr;
    276   if (remote_bd_addr) {
    277     bdstr = remote_bd_addr->ToString();
    278   }
    279   BTIF_TRACE_DEBUG("in, bd addr:%s, prop type:%d, len:%d", bdstr.c_str(),
    280                    prop->type, prop->len);
    281   if (prop->len <= 0) {
    282     BTIF_TRACE_ERROR("property type:%d, len:%d is invalid", prop->type,
    283                      prop->len);
    284     return false;
    285   }
    286   int ret = false;
    287   switch (prop->type) {
    288     case BT_PROPERTY_REMOTE_DEVICE_TIMESTAMP:
    289       if (prop->len >= (int)sizeof(int))
    290         ret = btif_config_get_int(bdstr, BTIF_STORAGE_PATH_REMOTE_DEVTIME,
    291                                   (int*)prop->val);
    292       break;
    293     case BT_PROPERTY_BDNAME: {
    294       int len = prop->len;
    295       if (remote_bd_addr)
    296         ret = btif_config_get_str(bdstr, BTIF_STORAGE_PATH_REMOTE_NAME,
    297                                   (char*)prop->val, &len);
    298       else
    299         ret = btif_config_get_str("Adapter", BTIF_STORAGE_KEY_ADAPTER_NAME,
    300                                   (char*)prop->val, &len);
    301       if (ret && len && len <= prop->len)
    302         prop->len = len - 1;
    303       else {
    304         prop->len = 0;
    305         ret = false;
    306       }
    307       break;
    308     }
    309     case BT_PROPERTY_REMOTE_FRIENDLY_NAME: {
    310       int len = prop->len;
    311       ret = btif_config_get_str(bdstr, BTIF_STORAGE_PATH_REMOTE_ALIASE,
    312                                 (char*)prop->val, &len);
    313       if (ret && len && len <= prop->len)
    314         prop->len = len - 1;
    315       else {
    316         prop->len = 0;
    317         ret = false;
    318       }
    319       break;
    320     }
    321     case BT_PROPERTY_ADAPTER_SCAN_MODE:
    322       if (prop->len >= (int)sizeof(int))
    323         ret = btif_config_get_int("Adapter", BTIF_STORAGE_KEY_ADAPTER_SCANMODE,
    324                                   (int*)prop->val);
    325       break;
    326     case BT_PROPERTY_ADAPTER_DISCOVERY_TIMEOUT:
    327       if (prop->len >= (int)sizeof(int))
    328         ret = btif_config_get_int(
    329             "Adapter", BTIF_STORAGE_KEY_ADAPTER_DISC_TIMEOUT, (int*)prop->val);
    330       break;
    331     case BT_PROPERTY_CLASS_OF_DEVICE:
    332       if (prop->len >= (int)sizeof(int))
    333         ret = btif_config_get_int(bdstr, BTIF_STORAGE_PATH_REMOTE_DEVCLASS,
    334                                   (int*)prop->val);
    335       break;
    336     case BT_PROPERTY_TYPE_OF_DEVICE:
    337       if (prop->len >= (int)sizeof(int))
    338         ret = btif_config_get_int(bdstr, BTIF_STORAGE_PATH_REMOTE_DEVTYPE,
    339                                   (int*)prop->val);
    340       break;
    341     case BT_PROPERTY_UUIDS: {
    342       char value[1280];
    343       int size = sizeof(value);
    344       if (btif_config_get_str(bdstr, BTIF_STORAGE_PATH_REMOTE_SERVICE, value,
    345                               &size)) {
    346         Uuid* p_uuid = reinterpret_cast<Uuid*>(prop->val);
    347         size_t num_uuids =
    348             btif_split_uuids_string(value, p_uuid, BT_MAX_NUM_UUIDS);
    349         prop->len = num_uuids * sizeof(Uuid);
    350         ret = true;
    351       } else {
    352         prop->val = NULL;
    353         prop->len = 0;
    354       }
    355     } break;
    356 
    357     case BT_PROPERTY_REMOTE_VERSION_INFO: {
    358       bt_remote_version_t* info = (bt_remote_version_t*)prop->val;
    359 
    360       if (prop->len >= (int)sizeof(bt_remote_version_t)) {
    361         ret = btif_config_get_int(bdstr, BTIF_STORAGE_PATH_REMOTE_VER_MFCT,
    362                                   &info->manufacturer);
    363 
    364         if (ret)
    365           ret = btif_config_get_int(bdstr, BTIF_STORAGE_PATH_REMOTE_VER_VER,
    366                                     &info->version);
    367 
    368         if (ret)
    369           ret = btif_config_get_int(bdstr, BTIF_STORAGE_PATH_REMOTE_VER_SUBVER,
    370                                     &info->sub_ver);
    371       }
    372     } break;
    373 
    374     default:
    375       BTIF_TRACE_ERROR("Unknow prop type:%d", prop->type);
    376       return false;
    377   }
    378   return ret;
    379 }
    380 
    381 /*******************************************************************************
    382  *
    383  * Function         btif_in_fetch_bonded_devices
    384  *
    385  * Description      Internal helper function to fetch the bonded devices
    386  *                  from NVRAM
    387  *
    388  * Returns          BT_STATUS_SUCCESS if successful, BT_STATUS_FAIL otherwise
    389  *
    390  ******************************************************************************/
    391 static bt_status_t btif_in_fetch_bonded_device(const std::string& bdstr) {
    392   bool bt_linkkey_file_found = false;
    393 
    394   LINK_KEY link_key;
    395   size_t size = sizeof(link_key);
    396   if (btif_config_get_bin(bdstr, "LinkKey", (uint8_t*)link_key, &size)) {
    397     int linkkey_type;
    398     if (btif_config_get_int(bdstr, "LinkKeyType", &linkkey_type)) {
    399       bt_linkkey_file_found = true;
    400     } else {
    401       bt_linkkey_file_found = false;
    402     }
    403   }
    404   if ((btif_in_fetch_bonded_ble_device(bdstr, false, NULL) !=
    405        BT_STATUS_SUCCESS) &&
    406       (!bt_linkkey_file_found)) {
    407     BTIF_TRACE_DEBUG("Remote device:%s, no link key or ble key found",
    408                      bdstr.c_str());
    409     return BT_STATUS_FAIL;
    410   }
    411   return BT_STATUS_SUCCESS;
    412 }
    413 
    414 /*******************************************************************************
    415  *
    416  * Function         btif_in_fetch_bonded_devices
    417  *
    418  * Description      Internal helper function to fetch the bonded devices
    419  *                  from NVRAM
    420  *
    421  * Returns          BT_STATUS_SUCCESS if successful, BT_STATUS_FAIL otherwise
    422  *
    423  ******************************************************************************/
    424 static bt_status_t btif_in_fetch_bonded_devices(
    425     btif_bonded_devices_t* p_bonded_devices, int add) {
    426   memset(p_bonded_devices, 0, sizeof(btif_bonded_devices_t));
    427 
    428   bool bt_linkkey_file_found = false;
    429   int device_type;
    430 
    431   // TODO: this code is not thread safe, it can corrupt config content.
    432   // b/67595284
    433   for (const section_t& section : btif_config_sections()) {
    434     const std::string& name = section.name;
    435     if (!RawAddress::IsValidAddress(name)) continue;
    436 
    437     BTIF_TRACE_DEBUG("Remote device:%s", name.c_str());
    438     LINK_KEY link_key;
    439     size_t size = sizeof(link_key);
    440     if (btif_config_get_bin(name, "LinkKey", link_key, &size)) {
    441       int linkkey_type;
    442       if (btif_config_get_int(name, "LinkKeyType", &linkkey_type)) {
    443         RawAddress bd_addr;
    444         RawAddress::FromString(name, bd_addr);
    445         if (add) {
    446           DEV_CLASS dev_class = {0, 0, 0};
    447           int cod;
    448           int pin_length = 0;
    449           if (btif_config_get_int(name, "DevClass", &cod))
    450             uint2devclass((uint32_t)cod, dev_class);
    451           btif_config_get_int(name, "PinLength", &pin_length);
    452           BTA_DmAddDevice(bd_addr, dev_class, link_key, 0, 0,
    453                           (uint8_t)linkkey_type, 0, pin_length);
    454 
    455           if (btif_config_get_int(name, "DevType", &device_type) &&
    456               (device_type == BT_DEVICE_TYPE_DUMO)) {
    457             btif_gatts_add_bonded_dev_from_nv(bd_addr);
    458           }
    459         }
    460         bt_linkkey_file_found = true;
    461         p_bonded_devices->devices[p_bonded_devices->num_devices++] = bd_addr;
    462       } else {
    463         bt_linkkey_file_found = false;
    464       }
    465     }
    466     if (!btif_in_fetch_bonded_ble_device(name.c_str(), add, p_bonded_devices) &&
    467         !bt_linkkey_file_found) {
    468       BTIF_TRACE_DEBUG("Remote device:%s, no link key or ble key found",
    469                        name.c_str());
    470     }
    471   }
    472   return BT_STATUS_SUCCESS;
    473 }
    474 
    475 static void btif_read_le_key(const uint8_t key_type, const size_t key_len,
    476                              RawAddress bd_addr, const uint8_t addr_type,
    477                              const bool add_key, bool* device_added,
    478                              bool* key_found) {
    479   CHECK(device_added);
    480   CHECK(key_found);
    481 
    482   tBTA_LE_KEY_VALUE key;
    483   memset(&key, 0, sizeof(key));
    484 
    485   if (btif_storage_get_ble_bonding_key(&bd_addr, key_type, (uint8_t*)&key,
    486                                        key_len) == BT_STATUS_SUCCESS) {
    487     if (add_key) {
    488       if (!*device_added) {
    489         BTA_DmAddBleDevice(bd_addr, addr_type, BT_DEVICE_TYPE_BLE);
    490         *device_added = true;
    491       }
    492 
    493       BTIF_TRACE_DEBUG("%s() Adding key type %d for %s", __func__, key_type,
    494                        bd_addr.ToString().c_str());
    495       BTA_DmAddBleKey(bd_addr, &key, key_type);
    496     }
    497 
    498     *key_found = true;
    499   }
    500 }
    501 
    502 /*******************************************************************************
    503  * Functions
    504  *
    505  * Functions are synchronous and can be called by both from internal modules
    506  * such as BTIF_DM and by external entiries from HAL via BTIF_context_switch.
    507  * For OUT parameters, the caller is expected to provide the memory.
    508  * Caller is expected to provide a valid pointer to 'property->value' based on
    509  * the property->type.
    510  ******************************************************************************/
    511 
    512 /*******************************************************************************
    513  *
    514  * Function         btif_split_uuids_string
    515  *
    516  * Description      Internal helper function to split the string of UUIDs
    517  *                  read from the NVRAM to an array
    518  *
    519  * Returns          Number of UUIDs parsed from the supplied string
    520  *
    521  ******************************************************************************/
    522 size_t btif_split_uuids_string(const char* str, bluetooth::Uuid* p_uuid,
    523                                size_t max_uuids) {
    524   CHECK(str);
    525   CHECK(p_uuid);
    526 
    527   size_t num_uuids = 0;
    528   while (str && num_uuids < max_uuids) {
    529     bool is_valid;
    530     bluetooth::Uuid tmp =
    531         Uuid::FromString(std::string(str, Uuid::kString128BitLen), &is_valid);
    532     if (!is_valid) break;
    533 
    534     *p_uuid = tmp;
    535     p_uuid++;
    536 
    537     num_uuids++;
    538     str = strchr(str, ' ');
    539     if (str) str++;
    540   }
    541 
    542   return num_uuids;
    543 }
    544 
    545 /*******************************************************************************
    546  *
    547  * Function         btif_storage_get_adapter_property
    548  *
    549  * Description      BTIF storage API - Fetches the adapter property->type
    550  *                  from NVRAM and fills property->val.
    551  *                  Caller should provide memory for property->val and
    552  *                  set the property->val
    553  *
    554  * Returns          BT_STATUS_SUCCESS if the fetch was successful,
    555  *                  BT_STATUS_FAIL otherwise
    556  *
    557  ******************************************************************************/
    558 bt_status_t btif_storage_get_adapter_property(bt_property_t* property) {
    559   /* Special handling for adapter address and BONDED_DEVICES */
    560   if (property->type == BT_PROPERTY_BDADDR) {
    561     RawAddress* bd_addr = (RawAddress*)property->val;
    562     /* Fetch the local BD ADDR */
    563     const controller_t* controller = controller_get_interface();
    564     if (!controller->get_is_ready()) {
    565       LOG_ERROR(LOG_TAG,
    566                 "%s: Controller not ready! Unable to return Bluetooth Address",
    567                 __func__);
    568       *bd_addr = RawAddress::kEmpty;
    569       return BT_STATUS_FAIL;
    570     } else {
    571       LOG_ERROR(LOG_TAG, "%s: Controller ready!", __func__);
    572       *bd_addr = *controller->get_address();
    573     }
    574     property->len = RawAddress::kLength;
    575     return BT_STATUS_SUCCESS;
    576   } else if (property->type == BT_PROPERTY_ADAPTER_BONDED_DEVICES) {
    577     btif_bonded_devices_t bonded_devices;
    578 
    579     btif_in_fetch_bonded_devices(&bonded_devices, 0);
    580 
    581     BTIF_TRACE_DEBUG(
    582         "%s: Number of bonded devices: %d "
    583         "Property:BT_PROPERTY_ADAPTER_BONDED_DEVICES",
    584         __func__, bonded_devices.num_devices);
    585 
    586     if (bonded_devices.num_devices > 0) {
    587       property->len = bonded_devices.num_devices * RawAddress::kLength;
    588       memcpy(property->val, bonded_devices.devices, property->len);
    589     }
    590 
    591     /* if there are no bonded_devices, then length shall be 0 */
    592     return BT_STATUS_SUCCESS;
    593   } else if (property->type == BT_PROPERTY_UUIDS) {
    594     /* publish list of local supported services */
    595     Uuid* p_uuid = reinterpret_cast<Uuid*>(property->val);
    596     uint32_t num_uuids = 0;
    597     uint32_t i;
    598 
    599     tBTA_SERVICE_MASK service_mask = btif_get_enabled_services_mask();
    600     LOG_INFO(LOG_TAG, "%s service_mask:0x%x", __func__, service_mask);
    601     for (i = 0; i < BTA_MAX_SERVICE_ID; i++) {
    602       /* This should eventually become a function when more services are enabled
    603        */
    604       if (service_mask & (tBTA_SERVICE_MASK)(1 << i)) {
    605         switch (i) {
    606           case BTA_HFP_SERVICE_ID: {
    607             *(p_uuid + num_uuids) =
    608                 Uuid::From16Bit(UUID_SERVCLASS_AG_HANDSFREE);
    609             num_uuids++;
    610           }
    611           /* intentional fall through: Send both BFP & HSP UUIDs if HFP is
    612            * enabled */
    613           case BTA_HSP_SERVICE_ID: {
    614             *(p_uuid + num_uuids) =
    615                 Uuid::From16Bit(UUID_SERVCLASS_HEADSET_AUDIO_GATEWAY);
    616             num_uuids++;
    617           } break;
    618           case BTA_A2DP_SOURCE_SERVICE_ID: {
    619             *(p_uuid + num_uuids) =
    620                 Uuid::From16Bit(UUID_SERVCLASS_AUDIO_SOURCE);
    621             num_uuids++;
    622           } break;
    623           case BTA_A2DP_SINK_SERVICE_ID: {
    624             *(p_uuid + num_uuids) = Uuid::From16Bit(UUID_SERVCLASS_AUDIO_SINK);
    625             num_uuids++;
    626           } break;
    627           case BTA_HFP_HS_SERVICE_ID: {
    628             *(p_uuid + num_uuids) =
    629                 Uuid::From16Bit(UUID_SERVCLASS_HF_HANDSFREE);
    630             num_uuids++;
    631           } break;
    632         }
    633       }
    634     }
    635     property->len = (num_uuids) * sizeof(Uuid);
    636     return BT_STATUS_SUCCESS;
    637   }
    638 
    639   /* fall through for other properties */
    640   if (!cfg2prop(NULL, property)) {
    641     return btif_dm_get_adapter_property(property);
    642   }
    643   return BT_STATUS_SUCCESS;
    644 }
    645 
    646 /*******************************************************************************
    647  *
    648  * Function         btif_storage_set_adapter_property
    649  *
    650  * Description      BTIF storage API - Stores the adapter property
    651  *                  to NVRAM
    652  *
    653  * Returns          BT_STATUS_SUCCESS if the store was successful,
    654  *                  BT_STATUS_FAIL otherwise
    655  *
    656  ******************************************************************************/
    657 bt_status_t btif_storage_set_adapter_property(bt_property_t* property) {
    658   return prop2cfg(NULL, property) ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
    659 }
    660 
    661 /*******************************************************************************
    662  *
    663  * Function         btif_storage_get_remote_device_property
    664  *
    665  * Description      BTIF storage API - Fetches the remote device property->type
    666  *                  from NVRAM and fills property->val.
    667  *                  Caller should provide memory for property->val and
    668  *                  set the property->val
    669  *
    670  * Returns          BT_STATUS_SUCCESS if the fetch was successful,
    671  *                  BT_STATUS_FAIL otherwise
    672  *
    673  ******************************************************************************/
    674 bt_status_t btif_storage_get_remote_device_property(
    675     const RawAddress* remote_bd_addr, bt_property_t* property) {
    676   return cfg2prop(remote_bd_addr, property) ? BT_STATUS_SUCCESS
    677                                             : BT_STATUS_FAIL;
    678 }
    679 /*******************************************************************************
    680  *
    681  * Function         btif_storage_set_remote_device_property
    682  *
    683  * Description      BTIF storage API - Stores the remote device property
    684  *                  to NVRAM
    685  *
    686  * Returns          BT_STATUS_SUCCESS if the store was successful,
    687  *                  BT_STATUS_FAIL otherwise
    688  *
    689  ******************************************************************************/
    690 bt_status_t btif_storage_set_remote_device_property(
    691     const RawAddress* remote_bd_addr, bt_property_t* property) {
    692   return prop2cfg(remote_bd_addr, property) ? BT_STATUS_SUCCESS
    693                                             : BT_STATUS_FAIL;
    694 }
    695 
    696 /*******************************************************************************
    697  *
    698  * Function         btif_storage_add_remote_device
    699  *
    700  * Description      BTIF storage API - Adds a newly discovered device to NVRAM
    701  *                  along with the timestamp. Also, stores the various
    702  *                  properties - RSSI, BDADDR, NAME (if found in EIR)
    703  *
    704  * Returns          BT_STATUS_SUCCESS if the store was successful,
    705  *                  BT_STATUS_FAIL otherwise
    706  *
    707  ******************************************************************************/
    708 bt_status_t btif_storage_add_remote_device(const RawAddress* remote_bd_addr,
    709                                            uint32_t num_properties,
    710                                            bt_property_t* properties) {
    711   uint32_t i = 0;
    712   /* TODO: If writing a property, fails do we go back undo the earlier
    713    * written properties? */
    714   for (i = 0; i < num_properties; i++) {
    715     /* Ignore the RSSI as this is not stored in DB */
    716     if (properties[i].type == BT_PROPERTY_REMOTE_RSSI) continue;
    717 
    718     /* address for remote device needs special handling as we also store
    719      * timestamp */
    720     if (properties[i].type == BT_PROPERTY_BDADDR) {
    721       bt_property_t addr_prop;
    722       memcpy(&addr_prop, &properties[i], sizeof(bt_property_t));
    723       addr_prop.type = (bt_property_type_t)BT_PROPERTY_REMOTE_DEVICE_TIMESTAMP;
    724       btif_storage_set_remote_device_property(remote_bd_addr, &addr_prop);
    725     } else {
    726       btif_storage_set_remote_device_property(remote_bd_addr, &properties[i]);
    727     }
    728   }
    729   return BT_STATUS_SUCCESS;
    730 }
    731 
    732 /*******************************************************************************
    733  *
    734  * Function         btif_storage_add_bonded_device
    735  *
    736  * Description      BTIF storage API - Adds the newly bonded device to NVRAM
    737  *                  along with the link-key, Key type and Pin key length
    738  *
    739  * Returns          BT_STATUS_SUCCESS if the store was successful,
    740  *                  BT_STATUS_FAIL otherwise
    741  *
    742  ******************************************************************************/
    743 
    744 bt_status_t btif_storage_add_bonded_device(RawAddress* remote_bd_addr,
    745                                            LINK_KEY link_key, uint8_t key_type,
    746                                            uint8_t pin_length) {
    747   std::string bdstr = remote_bd_addr->ToString();
    748   int ret = btif_config_set_int(bdstr, "LinkKeyType", (int)key_type);
    749   ret &= btif_config_set_int(bdstr, "PinLength", (int)pin_length);
    750   ret &= btif_config_set_bin(bdstr, "LinkKey", link_key, sizeof(LINK_KEY));
    751 
    752   if (is_restricted_mode()) {
    753     BTIF_TRACE_WARNING("%s: '%s' pairing will be removed if unrestricted",
    754                        __func__, bdstr.c_str());
    755     btif_config_set_int(bdstr, "Restricted", 1);
    756   }
    757 
    758   /* write bonded info immediately */
    759   btif_config_flush();
    760   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
    761 }
    762 
    763 /*******************************************************************************
    764  *
    765  * Function         btif_storage_remove_bonded_device
    766  *
    767  * Description      BTIF storage API - Deletes the bonded device from NVRAM
    768  *
    769  * Returns          BT_STATUS_SUCCESS if the deletion was successful,
    770  *                  BT_STATUS_FAIL otherwise
    771  *
    772  ******************************************************************************/
    773 bt_status_t btif_storage_remove_bonded_device(
    774     const RawAddress* remote_bd_addr) {
    775   std::string bdstr = remote_bd_addr->ToString();
    776   BTIF_TRACE_DEBUG("in bd addr:%s", bdstr.c_str());
    777 
    778   btif_storage_remove_ble_bonding_keys(remote_bd_addr);
    779 
    780   int ret = 1;
    781   if (btif_config_exist(bdstr, "LinkKeyType"))
    782     ret &= btif_config_remove(bdstr, "LinkKeyType");
    783   if (btif_config_exist(bdstr, "PinLength"))
    784     ret &= btif_config_remove(bdstr, "PinLength");
    785   if (btif_config_exist(bdstr, "LinkKey"))
    786     ret &= btif_config_remove(bdstr, "LinkKey");
    787   if (btif_config_exist(bdstr, BTIF_STORAGE_PATH_REMOTE_ALIASE)) {
    788     ret &= btif_config_remove(bdstr, BTIF_STORAGE_PATH_REMOTE_ALIASE);
    789   }
    790   /* write bonded info immediately */
    791   btif_config_flush();
    792   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
    793 }
    794 
    795 /*******************************************************************************
    796  *
    797  * Function         btif_storage_load_bonded_devices
    798  *
    799  * Description      BTIF storage API - Loads all the bonded devices from NVRAM
    800  *                  and adds to the BTA.
    801  *                  Additionally, this API also invokes the adaper_properties_cb
    802  *                  and remote_device_properties_cb for each of the bonded
    803  *                  devices.
    804  *
    805  * Returns          BT_STATUS_SUCCESS if successful, BT_STATUS_FAIL otherwise
    806  *
    807  ******************************************************************************/
    808 bt_status_t btif_storage_load_bonded_devices(void) {
    809   btif_bonded_devices_t bonded_devices;
    810   uint32_t i = 0;
    811   bt_property_t adapter_props[6];
    812   uint32_t num_props = 0;
    813   bt_property_t remote_properties[8];
    814   RawAddress addr;
    815   bt_bdname_t name, alias;
    816   bt_scan_mode_t mode;
    817   uint32_t disc_timeout;
    818   Uuid local_uuids[BT_MAX_NUM_UUIDS];
    819   Uuid remote_uuids[BT_MAX_NUM_UUIDS];
    820   bt_status_t status;
    821 
    822   btif_in_fetch_bonded_devices(&bonded_devices, 1);
    823 
    824   /* Now send the adapter_properties_cb with all adapter_properties */
    825   {
    826     memset(adapter_props, 0, sizeof(adapter_props));
    827 
    828     /* address */
    829     BTIF_STORAGE_GET_ADAPTER_PROP(status, BT_PROPERTY_BDADDR, &addr,
    830                                   sizeof(addr), adapter_props[num_props]);
    831     // Add BT_PROPERTY_BDADDR property into list only when successful.
    832     // Otherwise, skip this property entry.
    833     if (status == BT_STATUS_SUCCESS) {
    834       num_props++;
    835     }
    836 
    837     /* BD_NAME */
    838     BTIF_STORAGE_GET_ADAPTER_PROP(status, BT_PROPERTY_BDNAME, &name,
    839                                   sizeof(name), adapter_props[num_props]);
    840     num_props++;
    841 
    842     /* SCAN_MODE */
    843     /* TODO: At the time of BT on, always report the scan mode as 0 irrespective
    844      of the scan_mode during the previous enable cycle.
    845      This needs to be re-visited as part of the app/stack enable sequence
    846      synchronization */
    847     mode = BT_SCAN_MODE_NONE;
    848     adapter_props[num_props].type = BT_PROPERTY_ADAPTER_SCAN_MODE;
    849     adapter_props[num_props].len = sizeof(mode);
    850     adapter_props[num_props].val = &mode;
    851     num_props++;
    852 
    853     /* DISC_TIMEOUT */
    854     BTIF_STORAGE_GET_ADAPTER_PROP(status, BT_PROPERTY_ADAPTER_DISCOVERY_TIMEOUT,
    855                                   &disc_timeout, sizeof(disc_timeout),
    856                                   adapter_props[num_props]);
    857     num_props++;
    858 
    859     /* BONDED_DEVICES */
    860     RawAddress* devices_list = (RawAddress*)osi_malloc(
    861         sizeof(RawAddress) * bonded_devices.num_devices);
    862     adapter_props[num_props].type = BT_PROPERTY_ADAPTER_BONDED_DEVICES;
    863     adapter_props[num_props].len =
    864         bonded_devices.num_devices * sizeof(RawAddress);
    865     adapter_props[num_props].val = devices_list;
    866     for (i = 0; i < bonded_devices.num_devices; i++) {
    867       devices_list[i] = bonded_devices.devices[i];
    868     }
    869     num_props++;
    870 
    871     /* LOCAL UUIDs */
    872     BTIF_STORAGE_GET_ADAPTER_PROP(status, BT_PROPERTY_UUIDS, local_uuids,
    873                                   sizeof(local_uuids),
    874                                   adapter_props[num_props]);
    875     num_props++;
    876 
    877     btif_adapter_properties_evt(BT_STATUS_SUCCESS, num_props, adapter_props);
    878 
    879     osi_free(devices_list);
    880   }
    881 
    882   BTIF_TRACE_EVENT("%s: %d bonded devices found", __func__,
    883                    bonded_devices.num_devices);
    884 
    885   {
    886     for (i = 0; i < bonded_devices.num_devices; i++) {
    887       RawAddress* p_remote_addr;
    888 
    889       /*
    890        * TODO: improve handling of missing fields in NVRAM.
    891        */
    892       uint32_t cod = 0;
    893       uint32_t devtype = 0;
    894 
    895       num_props = 0;
    896       p_remote_addr = &bonded_devices.devices[i];
    897       memset(remote_properties, 0, sizeof(remote_properties));
    898       BTIF_STORAGE_GET_REMOTE_PROP(p_remote_addr, BT_PROPERTY_BDNAME, &name,
    899                                    sizeof(name), remote_properties[num_props]);
    900       num_props++;
    901 
    902       BTIF_STORAGE_GET_REMOTE_PROP(p_remote_addr,
    903                                    BT_PROPERTY_REMOTE_FRIENDLY_NAME, &alias,
    904                                    sizeof(alias), remote_properties[num_props]);
    905       num_props++;
    906 
    907       BTIF_STORAGE_GET_REMOTE_PROP(p_remote_addr, BT_PROPERTY_CLASS_OF_DEVICE,
    908                                    &cod, sizeof(cod),
    909                                    remote_properties[num_props]);
    910       num_props++;
    911 
    912       BTIF_STORAGE_GET_REMOTE_PROP(p_remote_addr, BT_PROPERTY_TYPE_OF_DEVICE,
    913                                    &devtype, sizeof(devtype),
    914                                    remote_properties[num_props]);
    915       num_props++;
    916 
    917       BTIF_STORAGE_GET_REMOTE_PROP(p_remote_addr, BT_PROPERTY_UUIDS,
    918                                    remote_uuids, sizeof(remote_uuids),
    919                                    remote_properties[num_props]);
    920       num_props++;
    921 
    922       btif_remote_properties_evt(BT_STATUS_SUCCESS, p_remote_addr, num_props,
    923                                  remote_properties);
    924     }
    925   }
    926   return BT_STATUS_SUCCESS;
    927 }
    928 
    929 /*******************************************************************************
    930  *
    931  * Function         btif_storage_add_ble_bonding_key
    932  *
    933  * Description      BTIF storage API - Adds the newly bonded device to NVRAM
    934  *                  along with the ble-key, Key type and Pin key length
    935  *
    936  * Returns          BT_STATUS_SUCCESS if the store was successful,
    937  *                  BT_STATUS_FAIL otherwise
    938  *
    939  ******************************************************************************/
    940 
    941 bt_status_t btif_storage_add_ble_bonding_key(RawAddress* remote_bd_addr,
    942                                              const uint8_t* key,
    943                                              uint8_t key_type,
    944                                              uint8_t key_length) {
    945   const char* name;
    946   switch (key_type) {
    947     case BTIF_DM_LE_KEY_PENC:
    948       name = "LE_KEY_PENC";
    949       break;
    950     case BTIF_DM_LE_KEY_PID:
    951       name = "LE_KEY_PID";
    952       break;
    953     case BTIF_DM_LE_KEY_PCSRK:
    954       name = "LE_KEY_PCSRK";
    955       break;
    956     case BTIF_DM_LE_KEY_LENC:
    957       name = "LE_KEY_LENC";
    958       break;
    959     case BTIF_DM_LE_KEY_LCSRK:
    960       name = "LE_KEY_LCSRK";
    961       break;
    962     case BTIF_DM_LE_KEY_LID:
    963       name = "LE_KEY_LID";
    964       break;
    965     default:
    966       return BT_STATUS_FAIL;
    967   }
    968   int ret =
    969       btif_config_set_bin(remote_bd_addr->ToString(), name, key, key_length);
    970   btif_config_save();
    971   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
    972 }
    973 
    974 /*******************************************************************************
    975  *
    976  * Function         btif_storage_get_ble_bonding_key
    977  *
    978  * Description
    979  *
    980  * Returns          BT_STATUS_SUCCESS if the fetch was successful,
    981  *                  BT_STATUS_FAIL otherwise
    982  *
    983  ******************************************************************************/
    984 bt_status_t btif_storage_get_ble_bonding_key(RawAddress* remote_bd_addr,
    985                                              uint8_t key_type,
    986                                              uint8_t* key_value,
    987                                              int key_length) {
    988   const char* name;
    989   switch (key_type) {
    990     case BTIF_DM_LE_KEY_PENC:
    991       name = "LE_KEY_PENC";
    992       break;
    993     case BTIF_DM_LE_KEY_PID:
    994       name = "LE_KEY_PID";
    995       break;
    996     case BTIF_DM_LE_KEY_PCSRK:
    997       name = "LE_KEY_PCSRK";
    998       break;
    999     case BTIF_DM_LE_KEY_LENC:
   1000       name = "LE_KEY_LENC";
   1001       break;
   1002     case BTIF_DM_LE_KEY_LCSRK:
   1003       name = "LE_KEY_LCSRK";
   1004       break;
   1005     case BTIF_DM_LE_KEY_LID:
   1006       name = "LE_KEY_LID";
   1007     default:
   1008       return BT_STATUS_FAIL;
   1009   }
   1010   size_t length = key_length;
   1011   int ret =
   1012       btif_config_get_bin(remote_bd_addr->ToString(), name, key_value, &length);
   1013   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
   1014 }
   1015 
   1016 /*******************************************************************************
   1017  *
   1018  * Function         btif_storage_remove_ble_keys
   1019  *
   1020  * Description      BTIF storage API - Deletes the bonded device from NVRAM
   1021  *
   1022  * Returns          BT_STATUS_SUCCESS if the deletion was successful,
   1023  *                  BT_STATUS_FAIL otherwise
   1024  *
   1025  ******************************************************************************/
   1026 bt_status_t btif_storage_remove_ble_bonding_keys(
   1027     const RawAddress* remote_bd_addr) {
   1028   std::string bdstr = remote_bd_addr->ToString();
   1029   BTIF_TRACE_DEBUG(" %s in bd addr:%s", __func__, bdstr.c_str());
   1030   int ret = 1;
   1031   if (btif_config_exist(bdstr, "LE_KEY_PENC"))
   1032     ret &= btif_config_remove(bdstr, "LE_KEY_PENC");
   1033   if (btif_config_exist(bdstr, "LE_KEY_PID"))
   1034     ret &= btif_config_remove(bdstr, "LE_KEY_PID");
   1035   if (btif_config_exist(bdstr, "LE_KEY_PCSRK"))
   1036     ret &= btif_config_remove(bdstr, "LE_KEY_PCSRK");
   1037   if (btif_config_exist(bdstr, "LE_KEY_LENC"))
   1038     ret &= btif_config_remove(bdstr, "LE_KEY_LENC");
   1039   if (btif_config_exist(bdstr, "LE_KEY_LCSRK"))
   1040     ret &= btif_config_remove(bdstr, "LE_KEY_LCSRK");
   1041   btif_config_save();
   1042   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
   1043 }
   1044 
   1045 /*******************************************************************************
   1046  *
   1047  * Function         btif_storage_add_ble_local_key
   1048  *
   1049  * Description      BTIF storage API - Adds the ble key to NVRAM
   1050  *
   1051  * Returns          BT_STATUS_SUCCESS if the store was successful,
   1052  *                  BT_STATUS_FAIL otherwise
   1053  *
   1054  ******************************************************************************/
   1055 bt_status_t btif_storage_add_ble_local_key(char* key, uint8_t key_type,
   1056                                            uint8_t key_length) {
   1057   const char* name;
   1058   switch (key_type) {
   1059     case BTIF_DM_LE_LOCAL_KEY_IR:
   1060       name = "LE_LOCAL_KEY_IR";
   1061       break;
   1062     case BTIF_DM_LE_LOCAL_KEY_IRK:
   1063       name = "LE_LOCAL_KEY_IRK";
   1064       break;
   1065     case BTIF_DM_LE_LOCAL_KEY_DHK:
   1066       name = "LE_LOCAL_KEY_DHK";
   1067       break;
   1068     case BTIF_DM_LE_LOCAL_KEY_ER:
   1069       name = "LE_LOCAL_KEY_ER";
   1070       break;
   1071     default:
   1072       return BT_STATUS_FAIL;
   1073   }
   1074   int ret =
   1075       btif_config_set_bin("Adapter", name, (const uint8_t*)key, key_length);
   1076   btif_config_save();
   1077   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
   1078 }
   1079 
   1080 /*******************************************************************************
   1081  *
   1082  * Function         btif_storage_get_ble_local_key
   1083  *
   1084  * Description
   1085  *
   1086  * Returns          BT_STATUS_SUCCESS if the fetch was successful,
   1087  *                  BT_STATUS_FAIL otherwise
   1088  *
   1089  ******************************************************************************/
   1090 bt_status_t btif_storage_get_ble_local_key(uint8_t key_type, char* key_value,
   1091                                            int key_length) {
   1092   const char* name;
   1093   switch (key_type) {
   1094     case BTIF_DM_LE_LOCAL_KEY_IR:
   1095       name = "LE_LOCAL_KEY_IR";
   1096       break;
   1097     case BTIF_DM_LE_LOCAL_KEY_IRK:
   1098       name = "LE_LOCAL_KEY_IRK";
   1099       break;
   1100     case BTIF_DM_LE_LOCAL_KEY_DHK:
   1101       name = "LE_LOCAL_KEY_DHK";
   1102       break;
   1103     case BTIF_DM_LE_LOCAL_KEY_ER:
   1104       name = "LE_LOCAL_KEY_ER";
   1105       break;
   1106     default:
   1107       return BT_STATUS_FAIL;
   1108   }
   1109   size_t length = key_length;
   1110   int ret = btif_config_get_bin("Adapter", name, (uint8_t*)key_value, &length);
   1111   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
   1112 }
   1113 
   1114 /*******************************************************************************
   1115  *
   1116  * Function         btif_storage_remove_ble_local_keys
   1117  *
   1118  * Description      BTIF storage API - Deletes the bonded device from NVRAM
   1119  *
   1120  * Returns          BT_STATUS_SUCCESS if the deletion was successful,
   1121  *                  BT_STATUS_FAIL otherwise
   1122  *
   1123  ******************************************************************************/
   1124 bt_status_t btif_storage_remove_ble_local_keys(void) {
   1125   int ret = 1;
   1126   if (btif_config_exist("Adapter", "LE_LOCAL_KEY_IR"))
   1127     ret &= btif_config_remove("Adapter", "LE_LOCAL_KEY_IR");
   1128   if (btif_config_exist("Adapter", "LE_LOCAL_KEY_IRK"))
   1129     ret &= btif_config_remove("Adapter", "LE_LOCAL_KEY_IRK");
   1130   if (btif_config_exist("Adapter", "LE_LOCAL_KEY_DHK"))
   1131     ret &= btif_config_remove("Adapter", "LE_LOCAL_KEY_DHK");
   1132   if (btif_config_exist("Adapter", "LE_LOCAL_KEY_ER"))
   1133     ret &= btif_config_remove("Adapter", "LE_LOCAL_KEY_ER");
   1134   btif_config_save();
   1135   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
   1136 }
   1137 
   1138 static bt_status_t btif_in_fetch_bonded_ble_device(
   1139     const std::string& remote_bd_addr, int add,
   1140     btif_bonded_devices_t* p_bonded_devices) {
   1141   int device_type;
   1142   int addr_type;
   1143   bool device_added = false;
   1144   bool key_found = false;
   1145 
   1146   if (!btif_config_get_int(remote_bd_addr, "DevType", &device_type))
   1147     return BT_STATUS_FAIL;
   1148 
   1149   if ((device_type & BT_DEVICE_TYPE_BLE) == BT_DEVICE_TYPE_BLE ||
   1150       btif_has_ble_keys(remote_bd_addr)) {
   1151     BTIF_TRACE_DEBUG("%s Found a LE device: %s", __func__,
   1152                      remote_bd_addr.c_str());
   1153 
   1154     RawAddress bd_addr;
   1155     RawAddress::FromString(remote_bd_addr, bd_addr);
   1156 
   1157     if (btif_storage_get_remote_addr_type(&bd_addr, &addr_type) !=
   1158         BT_STATUS_SUCCESS) {
   1159       addr_type = BLE_ADDR_PUBLIC;
   1160       btif_storage_set_remote_addr_type(&bd_addr, BLE_ADDR_PUBLIC);
   1161     }
   1162 
   1163     btif_read_le_key(BTIF_DM_LE_KEY_PENC, sizeof(tBTM_LE_PENC_KEYS), bd_addr,
   1164                      addr_type, add, &device_added, &key_found);
   1165 
   1166     btif_read_le_key(BTIF_DM_LE_KEY_PID, sizeof(tBTM_LE_PID_KEYS), bd_addr,
   1167                      addr_type, add, &device_added, &key_found);
   1168 
   1169     btif_read_le_key(BTIF_DM_LE_KEY_LID, sizeof(tBTM_LE_PID_KEYS), bd_addr,
   1170                      addr_type, add, &device_added, &key_found);
   1171 
   1172     btif_read_le_key(BTIF_DM_LE_KEY_PCSRK, sizeof(tBTM_LE_PCSRK_KEYS), bd_addr,
   1173                      addr_type, add, &device_added, &key_found);
   1174 
   1175     btif_read_le_key(BTIF_DM_LE_KEY_LENC, sizeof(tBTM_LE_LENC_KEYS), bd_addr,
   1176                      addr_type, add, &device_added, &key_found);
   1177 
   1178     btif_read_le_key(BTIF_DM_LE_KEY_LCSRK, sizeof(tBTM_LE_LCSRK_KEYS), bd_addr,
   1179                      addr_type, add, &device_added, &key_found);
   1180 
   1181     // Fill in the bonded devices
   1182     if (device_added) {
   1183       p_bonded_devices->devices[p_bonded_devices->num_devices++] = bd_addr;
   1184       btif_gatts_add_bonded_dev_from_nv(bd_addr);
   1185     }
   1186 
   1187     if (key_found) return BT_STATUS_SUCCESS;
   1188   }
   1189   return BT_STATUS_FAIL;
   1190 }
   1191 
   1192 bt_status_t btif_storage_set_remote_addr_type(const RawAddress* remote_bd_addr,
   1193                                               uint8_t addr_type) {
   1194   int ret = btif_config_set_int(remote_bd_addr->ToString(), "AddrType",
   1195                                 (int)addr_type);
   1196   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
   1197 }
   1198 
   1199 bool btif_has_ble_keys(const std::string& bdstr) {
   1200   return btif_config_exist(bdstr, "LE_KEY_PENC");
   1201 }
   1202 
   1203 /*******************************************************************************
   1204  *
   1205  * Function         btif_storage_get_remote_addr_type
   1206  *
   1207  * Description      BTIF storage API - Fetches the remote addr type
   1208  *
   1209  * Returns          BT_STATUS_SUCCESS if the fetch was successful,
   1210  *                  BT_STATUS_FAIL otherwise
   1211  *
   1212  ******************************************************************************/
   1213 bt_status_t btif_storage_get_remote_addr_type(const RawAddress* remote_bd_addr,
   1214                                               int* addr_type) {
   1215   int ret =
   1216       btif_config_get_int(remote_bd_addr->ToString(), "AddrType", addr_type);
   1217   return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
   1218 }
   1219 /*******************************************************************************
   1220  *
   1221  * Function         btif_storage_add_hid_device_info
   1222  *
   1223  * Description      BTIF storage API - Adds the hid information of bonded hid
   1224  *                  devices-to NVRAM
   1225  *
   1226  * Returns          BT_STATUS_SUCCESS if the store was successful,
   1227  *                  BT_STATUS_FAIL otherwise
   1228  *
   1229  ******************************************************************************/
   1230 
   1231 bt_status_t btif_storage_add_hid_device_info(
   1232     RawAddress* remote_bd_addr, uint16_t attr_mask, uint8_t sub_class,
   1233     uint8_t app_id, uint16_t vendor_id, uint16_t product_id, uint16_t version,
   1234     uint8_t ctry_code, uint16_t ssr_max_latency, uint16_t ssr_min_tout,
   1235     uint16_t dl_len, uint8_t* dsc_list) {
   1236   BTIF_TRACE_DEBUG("btif_storage_add_hid_device_info:");
   1237   std::string bdstr = remote_bd_addr->ToString();
   1238   btif_config_set_int(bdstr, "HidAttrMask", attr_mask);
   1239   btif_config_set_int(bdstr, "HidSubClass", sub_class);
   1240   btif_config_set_int(bdstr, "HidAppId", app_id);
   1241   btif_config_set_int(bdstr, "HidVendorId", vendor_id);
   1242   btif_config_set_int(bdstr, "HidProductId", product_id);
   1243   btif_config_set_int(bdstr, "HidVersion", version);
   1244   btif_config_set_int(bdstr, "HidCountryCode", ctry_code);
   1245   btif_config_set_int(bdstr, "HidSSRMaxLatency", ssr_max_latency);
   1246   btif_config_set_int(bdstr, "HidSSRMinTimeout", ssr_min_tout);
   1247   if (dl_len > 0) btif_config_set_bin(bdstr, "HidDescriptor", dsc_list, dl_len);
   1248   btif_config_save();
   1249   return BT_STATUS_SUCCESS;
   1250 }
   1251 
   1252 /*******************************************************************************
   1253  *
   1254  * Function         btif_storage_load_bonded_hid_info
   1255  *
   1256  * Description      BTIF storage API - Loads hid info for all the bonded devices
   1257  *                  from NVRAM and adds those devices  to the BTA_HH.
   1258  *
   1259  * Returns          BT_STATUS_SUCCESS if successful, BT_STATUS_FAIL otherwise
   1260  *
   1261  ******************************************************************************/
   1262 bt_status_t btif_storage_load_bonded_hid_info(void) {
   1263   // TODO: this code is not thread safe, it can corrupt config content.
   1264   // b/67595284
   1265   for (const section_t& section : btif_config_sections()) {
   1266     const std::string& name = section.name;
   1267     if (!RawAddress::IsValidAddress(name)) continue;
   1268 
   1269     BTIF_TRACE_DEBUG("Remote device:%s", name.c_str());
   1270 
   1271     int value;
   1272     if (!btif_config_get_int(name, "HidAttrMask", &value)) continue;
   1273     uint16_t attr_mask = (uint16_t)value;
   1274 
   1275     if (btif_in_fetch_bonded_device(name) != BT_STATUS_SUCCESS) {
   1276       RawAddress bd_addr;
   1277       RawAddress::FromString(name, bd_addr);
   1278       btif_storage_remove_hid_info(&bd_addr);
   1279       continue;
   1280     }
   1281 
   1282     tBTA_HH_DEV_DSCP_INFO dscp_info;
   1283     memset(&dscp_info, 0, sizeof(dscp_info));
   1284 
   1285     btif_config_get_int(name, "HidSubClass", &value);
   1286     uint8_t sub_class = (uint8_t)value;
   1287 
   1288     btif_config_get_int(name, "HidAppId", &value);
   1289     uint8_t app_id = (uint8_t)value;
   1290 
   1291     btif_config_get_int(name, "HidVendorId", &value);
   1292     dscp_info.vendor_id = (uint16_t)value;
   1293 
   1294     btif_config_get_int(name, "HidProductId", &value);
   1295     dscp_info.product_id = (uint16_t)value;
   1296 
   1297     btif_config_get_int(name, "HidVersion", &value);
   1298     dscp_info.version = (uint8_t)value;
   1299 
   1300     btif_config_get_int(name, "HidCountryCode", &value);
   1301     dscp_info.ctry_code = (uint8_t)value;
   1302 
   1303     value = 0;
   1304     btif_config_get_int(name, "HidSSRMaxLatency", &value);
   1305     dscp_info.ssr_max_latency = (uint16_t)value;
   1306 
   1307     value = 0;
   1308     btif_config_get_int(name, "HidSSRMinTimeout", &value);
   1309     dscp_info.ssr_min_tout = (uint16_t)value;
   1310 
   1311     size_t len = btif_config_get_bin_length(name, "HidDescriptor");
   1312     if (len > 0) {
   1313       dscp_info.descriptor.dl_len = (uint16_t)len;
   1314       dscp_info.descriptor.dsc_list = (uint8_t*)alloca(len);
   1315       btif_config_get_bin(name, "HidDescriptor",
   1316                           (uint8_t*)dscp_info.descriptor.dsc_list, &len);
   1317     }
   1318 
   1319     RawAddress bd_addr;
   1320     RawAddress::FromString(name, bd_addr);
   1321     // add extracted information to BTA HH
   1322     if (btif_hh_add_added_dev(bd_addr, attr_mask)) {
   1323       BTA_HhAddDev(bd_addr, attr_mask, sub_class, app_id, dscp_info);
   1324     }
   1325   }
   1326 
   1327   return BT_STATUS_SUCCESS;
   1328 }
   1329 
   1330 /*******************************************************************************
   1331  *
   1332  * Function         btif_storage_remove_hid_info
   1333  *
   1334  * Description      BTIF storage API - Deletes the bonded hid device info from
   1335  *                  NVRAM
   1336  *
   1337  * Returns          BT_STATUS_SUCCESS if the deletion was successful,
   1338  *                  BT_STATUS_FAIL otherwise
   1339  *
   1340  ******************************************************************************/
   1341 bt_status_t btif_storage_remove_hid_info(RawAddress* remote_bd_addr) {
   1342   std::string bdstr = remote_bd_addr->ToString();
   1343 
   1344   btif_config_remove(bdstr, "HidAttrMask");
   1345   btif_config_remove(bdstr, "HidSubClass");
   1346   btif_config_remove(bdstr, "HidAppId");
   1347   btif_config_remove(bdstr, "HidVendorId");
   1348   btif_config_remove(bdstr, "HidProductId");
   1349   btif_config_remove(bdstr, "HidVersion");
   1350   btif_config_remove(bdstr, "HidCountryCode");
   1351   btif_config_remove(bdstr, "HidSSRMaxLatency");
   1352   btif_config_remove(bdstr, "HidSSRMinTimeout");
   1353   btif_config_remove(bdstr, "HidDescriptor");
   1354   btif_config_save();
   1355   return BT_STATUS_SUCCESS;
   1356 }
   1357 
   1358 constexpr char HEARING_AID_PSM[] = "HearingAidPsm";
   1359 constexpr char HEARING_AID_CAPABILITIES[] = "HearingAidCapabilities";
   1360 constexpr char HEARING_AID_CODECS[] = "HearingAidCodecs";
   1361 constexpr char HEARING_AID_AUDIO_CONTROL_POINT[] =
   1362     "HearingAidAudioControlPoint";
   1363 constexpr char HEARING_AID_VOLUME_HANDLE[] = "HearingAidVolumeHandle";
   1364 constexpr char HEARING_AID_SYNC_ID[] = "HearingAidSyncId";
   1365 constexpr char HEARING_AID_RENDER_DELAY[] = "HearingAidRenderDelay";
   1366 constexpr char HEARING_AID_PREPARATION_DELAY[] = "HearingAidPreparationDelay";
   1367 constexpr char HEARING_AID_IS_WHITE_LISTED[] = "HearingAidIsWhiteListed";
   1368 
   1369 void btif_storage_add_hearing_aid(const RawAddress& address, uint16_t psm,
   1370                                   uint8_t capabilities, uint16_t codecs,
   1371                                   uint16_t audio_control_point_handle,
   1372                                   uint16_t volume_handle, uint64_t hi_sync_id,
   1373                                   uint16_t render_delay,
   1374                                   uint16_t preparation_delay) {
   1375   do_in_jni_thread(
   1376       FROM_HERE,
   1377       Bind(
   1378           [](const RawAddress& address, uint16_t psm, uint8_t capabilities,
   1379              uint16_t codecs, uint16_t audio_control_point_handle,
   1380              uint16_t volume_handle, uint64_t hi_sync_id, uint16_t render_delay,
   1381              uint16_t preparation_delay) {
   1382             std::string bdstr = address.ToString();
   1383             VLOG(2) << "saving hearing aid device: " << bdstr;
   1384             btif_config_set_int(bdstr, HEARING_AID_PSM, psm);
   1385             btif_config_set_int(bdstr, HEARING_AID_CAPABILITIES, capabilities);
   1386             btif_config_set_int(bdstr, HEARING_AID_CODECS, codecs);
   1387             btif_config_set_int(bdstr, HEARING_AID_AUDIO_CONTROL_POINT,
   1388                                 audio_control_point_handle);
   1389             btif_config_set_int(bdstr, HEARING_AID_VOLUME_HANDLE,
   1390                                 volume_handle);
   1391             btif_config_set_uint64(bdstr, HEARING_AID_SYNC_ID, hi_sync_id);
   1392             btif_config_set_int(bdstr, HEARING_AID_RENDER_DELAY, render_delay);
   1393             btif_config_set_int(bdstr, HEARING_AID_PREPARATION_DELAY,
   1394                                 preparation_delay);
   1395             btif_config_set_int(bdstr, HEARING_AID_IS_WHITE_LISTED, true);
   1396             btif_config_save();
   1397           },
   1398           address, psm, capabilities, codecs, audio_control_point_handle,
   1399           volume_handle, hi_sync_id, render_delay, preparation_delay));
   1400 }
   1401 
   1402 /** Loads information about bonded hearing aid devices */
   1403 void btif_storage_load_bonded_hearing_aids() {
   1404   // TODO: this code is not thread safe, it can corrupt config content.
   1405   // b/67595284
   1406   for (const section_t& section : btif_config_sections()) {
   1407     const std::string& name = section.name;
   1408     if (!RawAddress::IsValidAddress(name)) continue;
   1409 
   1410     BTIF_TRACE_DEBUG("Remote device:%s", name.c_str());
   1411 
   1412     int value;
   1413     if (!btif_config_get_int(name, HEARING_AID_PSM, &value)) continue;
   1414     uint16_t psm = value;
   1415 
   1416     if (btif_in_fetch_bonded_device(name.c_str()) != BT_STATUS_SUCCESS) {
   1417       RawAddress bd_addr;
   1418       RawAddress::FromString(name, bd_addr);
   1419       btif_storage_remove_hearing_aid(bd_addr);
   1420       continue;
   1421     }
   1422 
   1423     uint8_t capabilities = 0;
   1424     if (btif_config_get_int(name, HEARING_AID_CAPABILITIES, &value))
   1425       capabilities = value;
   1426 
   1427     uint16_t codecs = 0;
   1428     if (btif_config_get_int(name, HEARING_AID_CODECS, &value)) codecs = value;
   1429 
   1430     uint16_t audio_control_point_handle = 0;
   1431     if (btif_config_get_int(name, HEARING_AID_AUDIO_CONTROL_POINT, &value))
   1432       audio_control_point_handle = value;
   1433 
   1434     uint16_t volume_handle = 0;
   1435     if (btif_config_get_int(name, HEARING_AID_VOLUME_HANDLE, &value))
   1436       volume_handle = value;
   1437 
   1438     uint64_t lvalue;
   1439     uint64_t hi_sync_id = 0;
   1440     if (btif_config_get_uint64(name, HEARING_AID_SYNC_ID, &lvalue))
   1441       hi_sync_id = lvalue;
   1442 
   1443     uint16_t render_delay = 0;
   1444     if (btif_config_get_int(name, HEARING_AID_RENDER_DELAY, &value))
   1445       render_delay = value;
   1446 
   1447     uint16_t preparation_delay = 0;
   1448     if (btif_config_get_int(name, HEARING_AID_PREPARATION_DELAY, &value))
   1449       preparation_delay = value;
   1450 
   1451     uint16_t is_white_listed = 0;
   1452     if (btif_config_get_int(name, HEARING_AID_IS_WHITE_LISTED, &value))
   1453       is_white_listed = value;
   1454 
   1455     RawAddress bd_addr;
   1456     RawAddress::FromString(name, bd_addr);
   1457     // add extracted information to BTA Hearing Aid
   1458     do_in_bta_thread(
   1459         FROM_HERE,
   1460         Bind(&HearingAid::AddFromStorage, bd_addr, psm, capabilities, codecs,
   1461              audio_control_point_handle, volume_handle, hi_sync_id,
   1462              render_delay, preparation_delay, is_white_listed));
   1463   }
   1464 }
   1465 
   1466 /** Deletes the bonded hearing aid device info from NVRAM */
   1467 void btif_storage_remove_hearing_aid(const RawAddress& address) {
   1468   std::string addrstr = address.ToString();
   1469 
   1470   btif_config_remove(addrstr, HEARING_AID_PSM);
   1471   btif_config_remove(addrstr, HEARING_AID_CAPABILITIES);
   1472   btif_config_remove(addrstr, HEARING_AID_CODECS);
   1473   btif_config_remove(addrstr, HEARING_AID_AUDIO_CONTROL_POINT);
   1474   btif_config_remove(addrstr, HEARING_AID_VOLUME_HANDLE);
   1475   btif_config_remove(addrstr, HEARING_AID_SYNC_ID);
   1476   btif_config_remove(addrstr, HEARING_AID_IS_WHITE_LISTED);
   1477   btif_config_save();
   1478 }
   1479 
   1480 /** Remove the hearing aid device from white list */
   1481 void btif_storage_remove_hearing_aid_white_list(const RawAddress& address) {
   1482   std::string addrstr = address.ToString();
   1483 
   1484   btif_config_set_int(addrstr, HEARING_AID_IS_WHITE_LISTED, false);
   1485 }
   1486 
   1487 /*******************************************************************************
   1488  *
   1489  * Function         btif_storage_is_restricted_device
   1490  *
   1491  * Description      BTIF storage API - checks if this device is a restricted
   1492  *                  device
   1493  *
   1494  * Returns          true  if the device is labeled as restricted
   1495  *                  false otherwise
   1496  *
   1497  ******************************************************************************/
   1498 bool btif_storage_is_restricted_device(const RawAddress* remote_bd_addr) {
   1499   return btif_config_exist(remote_bd_addr->ToString(), "Restricted");
   1500 }
   1501 
   1502 /*******************************************************************************
   1503  * Function         btif_storage_load_hidd
   1504  *
   1505  * Description      Loads hidd bonded device and "plugs" it into hidd
   1506  *
   1507  * Returns          BT_STATUS_SUCCESS if successful, BT_STATUS_FAIL otherwise
   1508  *
   1509  ******************************************************************************/
   1510 bt_status_t btif_storage_load_hidd(void) {
   1511   // TODO: this code is not thread safe, it can corrupt config content.
   1512   // b/67595284
   1513   for (const section_t& section : btif_config_sections()) {
   1514     const std::string& name = section.name;
   1515     if (!RawAddress::IsValidAddress(name)) continue;
   1516 
   1517     BTIF_TRACE_DEBUG("Remote device:%s", name.c_str());
   1518     int value;
   1519     if (btif_in_fetch_bonded_device(name) == BT_STATUS_SUCCESS) {
   1520       if (btif_config_get_int(name, "HidDeviceCabled", &value)) {
   1521         RawAddress bd_addr;
   1522         RawAddress::FromString(name, bd_addr);
   1523         BTA_HdAddDevice(bd_addr);
   1524         break;
   1525       }
   1526     }
   1527   }
   1528 
   1529   return BT_STATUS_SUCCESS;
   1530 }
   1531 
   1532 /*******************************************************************************
   1533  *
   1534  * Function         btif_storage_set_hidd
   1535  *
   1536  * Description      Stores currently used HIDD device info in nvram and remove
   1537  *                  the "HidDeviceCabled" flag from unused devices
   1538  *
   1539  * Returns          BT_STATUS_SUCCESS
   1540  *
   1541  ******************************************************************************/
   1542 bt_status_t btif_storage_set_hidd(RawAddress* remote_bd_addr) {
   1543   std::string remote_device_address_string = remote_bd_addr->ToString();
   1544   for (const section_t& section : btif_config_sections()) {
   1545     if (!RawAddress::IsValidAddress(section.name)) continue;
   1546     if (section.name == remote_device_address_string) continue;
   1547     if (btif_in_fetch_bonded_device(section.name) == BT_STATUS_SUCCESS) {
   1548       btif_config_remove(section.name, "HidDeviceCabled");
   1549     }
   1550   }
   1551 
   1552   btif_config_set_int(remote_device_address_string, "HidDeviceCabled", 1);
   1553   btif_config_save();
   1554   return BT_STATUS_SUCCESS;
   1555 }
   1556 
   1557 /*******************************************************************************
   1558  *
   1559  * Function         btif_storage_remove_hidd
   1560  *
   1561  * Description      Removes hidd bonded device info from nvram
   1562  *
   1563  * Returns          BT_STATUS_SUCCESS
   1564  *
   1565  ******************************************************************************/
   1566 bt_status_t btif_storage_remove_hidd(RawAddress* remote_bd_addr) {
   1567   btif_config_remove(remote_bd_addr->ToString(), "HidDeviceCabled");
   1568   btif_config_save();
   1569 
   1570   return BT_STATUS_SUCCESS;
   1571 }
   1572 
   1573 // Get the name of a device from btif for interop database matching.
   1574 bool btif_storage_get_stored_remote_name(const RawAddress& bd_addr,
   1575                                          char* name) {
   1576   bt_property_t property;
   1577   property.type = BT_PROPERTY_BDNAME;
   1578   property.len = BTM_MAX_REM_BD_NAME_LEN;
   1579   property.val = name;
   1580 
   1581   return (btif_storage_get_remote_device_property(&bd_addr, &property) ==
   1582           BT_STATUS_SUCCESS);
   1583 }
   1584