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      1 /******************************************************************************
      2  *
      3  *  Copyright (C) 2009-2013 Broadcom Corporation
      4  *
      5  *  Licensed under the Apache License, Version 2.0 (the "License");
      6  *  you may not use this file except in compliance with the License.
      7  *  You may obtain a copy of the License at:
      8  *
      9  *  http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  *
     17  ******************************************************************************/
     18 
     19 
     20 /************************************************************************************
     21  *
     22  *  Filename:      btif_gatt_server.c
     23  *
     24  *  Description:   GATT server implementation
     25  *
     26  ***********************************************************************************/
     27 
     28 #include <hardware/bluetooth.h>
     29 #include <hardware/bt_gatt.h>
     30 #include <stdio.h>
     31 #include <stdlib.h>
     32 #include <errno.h>
     33 #include <string.h>
     34 
     35 #define LOG_TAG "BtGatt.btif"
     36 
     37 #include "btif_common.h"
     38 #include "btif_util.h"
     39 
     40 #if (defined(BLE_INCLUDED) && (BLE_INCLUDED == TRUE))
     41 
     42 #include "gki.h"
     43 #include "bta_api.h"
     44 #include "bta_gatt_api.h"
     45 #include "bd.h"
     46 #include "btif_dm.h"
     47 #include "btif_storage.h"
     48 #include "btif_config.h"
     49 
     50 #include "btif_gatt.h"
     51 #include "btif_gatt_util.h"
     52 
     53 /************************************************************************************
     54 **  Constants & Macros
     55 ************************************************************************************/
     56 
     57 #define CHECK_BTGATT_INIT() if (bt_gatt_callbacks == NULL)\
     58     {\
     59         ALOGW("%s: BTGATT not initialized", __FUNCTION__);\
     60         return BT_STATUS_NOT_READY;\
     61     } else {\
     62         ALOGD("%s", __FUNCTION__);\
     63     }
     64 
     65 
     66 typedef enum {
     67     BTIF_GATTS_REGISTER_APP = 2000,
     68     BTIF_GATTS_UNREGISTER_APP,
     69     BTIF_GATTS_OPEN,
     70     BTIF_GATTS_CLOSE,
     71     BTIF_GATTS_CREATE_SERVICE,
     72     BTIF_GATTS_ADD_INCLUDED_SERVICE,
     73     BTIF_GATTS_ADD_CHARACTERISTIC,
     74     BTIF_GATTS_ADD_DESCRIPTOR,
     75     BTIF_GATTS_START_SERVICE,
     76     BTIF_GATTS_STOP_SERVICE,
     77     BTIF_GATTS_DELETE_SERVICE,
     78     BTIF_GATTS_SEND_INDICATION,
     79     BTIF_GATTS_SEND_RESPONSE
     80 } btif_gatts_event_t;
     81 
     82 /************************************************************************************
     83 **  Local type definitions
     84 ************************************************************************************/
     85 
     86 typedef struct
     87 {
     88     uint8_t             value[BTGATT_MAX_ATTR_LEN];
     89     btgatt_response_t   response;
     90     btgatt_srvc_id_t    srvc_id;
     91     bt_bdaddr_t         bd_addr;
     92     bt_uuid_t           uuid;
     93     uint32_t            trans_id;
     94     uint16_t            conn_id;
     95     uint16_t            srvc_handle;
     96     uint16_t            incl_handle;
     97     uint16_t            attr_handle;
     98     uint16_t            permissions;
     99     uint16_t            len;
    100     uint8_t             server_if;
    101     uint8_t             is_direct;
    102     uint8_t             num_handles;
    103     uint8_t             properties;
    104     uint8_t             confirm;
    105     uint8_t             status;
    106     btgatt_transport_t  transport;
    107 
    108 } __attribute__((packed)) btif_gatts_cb_t;
    109 
    110 
    111 /************************************************************************************
    112 **  Static variables
    113 ************************************************************************************/
    114 
    115 extern const btgatt_callbacks_t *bt_gatt_callbacks;
    116 
    117 
    118 /************************************************************************************
    119 **  Static functions
    120 ************************************************************************************/
    121 
    122 static void btapp_gatts_copy_req_data(UINT16 event, char *p_dest, char *p_src)
    123 {
    124     tBTA_GATTS *p_dest_data = (tBTA_GATTS*) p_dest;
    125     tBTA_GATTS *p_src_data = (tBTA_GATTS*) p_src;
    126 
    127     if (!p_src_data || !p_dest_data)
    128         return;
    129 
    130     // Copy basic structure first
    131     memcpy(p_dest_data, p_src_data, sizeof(tBTA_GATTS));
    132 
    133     // Allocate buffer for request data if necessary
    134     switch (event)
    135     {
    136         case BTA_GATTS_READ_EVT:
    137         case BTA_GATTS_WRITE_EVT:
    138         case BTA_GATTS_EXEC_WRITE_EVT:
    139         case BTA_GATTS_MTU_EVT:
    140             p_dest_data->req_data.p_data = GKI_getbuf(sizeof(tBTA_GATTS_REQ_DATA));
    141             if (p_dest_data->req_data.p_data != NULL)
    142             {
    143                 memcpy(p_dest_data->req_data.p_data, p_src_data->req_data.p_data,
    144                     sizeof(tBTA_GATTS_REQ_DATA));
    145             }
    146             break;
    147 
    148         default:
    149             break;
    150     }
    151 }
    152 
    153 static void btapp_gatts_free_req_data(UINT16 event, tBTA_GATTS *p_data)
    154 {
    155     switch (event)
    156     {
    157         case BTA_GATTS_READ_EVT:
    158         case BTA_GATTS_WRITE_EVT:
    159         case BTA_GATTS_EXEC_WRITE_EVT:
    160         case BTA_GATTS_MTU_EVT:
    161             if (p_data && p_data->req_data.p_data)
    162                 GKI_freebuf(p_data->req_data.p_data);
    163             break;
    164 
    165         default:
    166             break;
    167     }
    168 }
    169 
    170 static void btapp_gatts_handle_cback(uint16_t event, char* p_param)
    171 {
    172     ALOGD("%s: Event %d", __FUNCTION__, event);
    173 
    174     tBTA_GATTS *p_data = (tBTA_GATTS*)p_param;
    175     switch (event)
    176     {
    177         case BTA_GATTS_REG_EVT:
    178         {
    179             bt_uuid_t app_uuid;
    180             bta_to_btif_uuid(&app_uuid, &p_data->reg_oper.uuid);
    181             HAL_CBACK(bt_gatt_callbacks, server->register_server_cb
    182                 , p_data->reg_oper.status
    183                 , p_data->reg_oper.server_if
    184                 , &app_uuid
    185             );
    186             break;
    187         }
    188 
    189         case BTA_GATTS_DEREG_EVT:
    190             break;
    191 
    192         case BTA_GATTS_CONNECT_EVT:
    193         {
    194             bt_bdaddr_t bda;
    195             bdcpy(bda.address, p_data->conn.remote_bda);
    196 
    197             btif_gatt_check_encrypted_link(p_data->conn.remote_bda);
    198 
    199             HAL_CBACK(bt_gatt_callbacks, server->connection_cb,
    200                       p_data->conn.conn_id, p_data->conn.server_if, TRUE, &bda);
    201             break;
    202         }
    203 
    204         case BTA_GATTS_DISCONNECT_EVT:
    205         {
    206             bt_bdaddr_t bda;
    207             bdcpy(bda.address, p_data->conn.remote_bda);
    208 
    209             HAL_CBACK(bt_gatt_callbacks, server->connection_cb,
    210                       p_data->conn.conn_id, p_data->conn.server_if, FALSE, &bda);
    211             break;
    212         }
    213 
    214         case BTA_GATTS_CREATE_EVT:
    215         {
    216             btgatt_srvc_id_t srvc_id;
    217             srvc_id.is_primary = p_data->create.is_primary;
    218             srvc_id.id.inst_id = p_data->create.svc_instance;
    219             bta_to_btif_uuid(&srvc_id.id.uuid, &p_data->create.uuid);
    220 
    221             HAL_CBACK(bt_gatt_callbacks, server->service_added_cb,
    222                       p_data->create.status, p_data->create.server_if, &srvc_id,
    223                       p_data->create.service_id
    224             );
    225         }
    226         break;
    227 
    228         case BTA_GATTS_ADD_INCL_SRVC_EVT:
    229             HAL_CBACK(bt_gatt_callbacks, server->included_service_added_cb,
    230                       p_data->add_result.status,
    231                       p_data->add_result.server_if,
    232                       p_data->add_result.service_id,
    233                       p_data->add_result.attr_id);
    234             break;
    235 
    236         case BTA_GATTS_ADD_CHAR_EVT:
    237         {
    238             bt_uuid_t uuid;
    239             bta_to_btif_uuid(&uuid, &p_data->add_result.char_uuid);
    240 
    241             HAL_CBACK(bt_gatt_callbacks, server->characteristic_added_cb,
    242                       p_data->add_result.status,
    243                       p_data->add_result.server_if,
    244                       &uuid,
    245                       p_data->add_result.service_id,
    246                       p_data->add_result.attr_id);
    247             break;
    248         }
    249 
    250         case BTA_GATTS_ADD_CHAR_DESCR_EVT:
    251         {
    252             bt_uuid_t uuid;
    253             bta_to_btif_uuid(&uuid, &p_data->add_result.char_uuid);
    254 
    255             HAL_CBACK(bt_gatt_callbacks, server->descriptor_added_cb,
    256                       p_data->add_result.status,
    257                       p_data->add_result.server_if,
    258                       &uuid,
    259                       p_data->add_result.service_id,
    260                       p_data->add_result.attr_id);
    261             break;
    262         }
    263 
    264         case BTA_GATTS_START_EVT:
    265             HAL_CBACK(bt_gatt_callbacks, server->service_started_cb,
    266                       p_data->srvc_oper.status,
    267                       p_data->srvc_oper.server_if,
    268                       p_data->srvc_oper.service_id);
    269             break;
    270 
    271         case BTA_GATTS_STOP_EVT:
    272             HAL_CBACK(bt_gatt_callbacks, server->service_stopped_cb,
    273                       p_data->srvc_oper.status,
    274                       p_data->srvc_oper.server_if,
    275                       p_data->srvc_oper.service_id);
    276             break;
    277 
    278         case BTA_GATTS_DELELTE_EVT:
    279             HAL_CBACK(bt_gatt_callbacks, server->service_deleted_cb,
    280                       p_data->srvc_oper.status,
    281                       p_data->srvc_oper.server_if,
    282                       p_data->srvc_oper.service_id);
    283             break;
    284 
    285         case BTA_GATTS_READ_EVT:
    286         {
    287             bt_bdaddr_t bda;
    288             bdcpy(bda.address, p_data->req_data.remote_bda);
    289 
    290             HAL_CBACK(bt_gatt_callbacks, server->request_read_cb,
    291                       p_data->req_data.conn_id,p_data->req_data.trans_id, &bda,
    292                       p_data->req_data.p_data->read_req.handle,
    293                       p_data->req_data.p_data->read_req.offset,
    294                       p_data->req_data.p_data->read_req.is_long);
    295             break;
    296         }
    297 
    298         case BTA_GATTS_WRITE_EVT:
    299         {
    300             bt_bdaddr_t bda;
    301             bdcpy(bda.address, p_data->req_data.remote_bda);
    302 
    303             HAL_CBACK(bt_gatt_callbacks, server->request_write_cb,
    304                       p_data->req_data.conn_id,p_data->req_data.trans_id, &bda,
    305                       p_data->req_data.p_data->write_req.handle,
    306                       p_data->req_data.p_data->write_req.offset,
    307                       p_data->req_data.p_data->write_req.len,
    308                       p_data->req_data.p_data->write_req.need_rsp,
    309                       p_data->req_data.p_data->write_req.is_prep,
    310                       p_data->req_data.p_data->write_req.value);
    311             break;
    312         }
    313 
    314         case BTA_GATTS_EXEC_WRITE_EVT:
    315         {
    316             bt_bdaddr_t bda;
    317             bdcpy(bda.address, p_data->req_data.remote_bda);
    318 
    319             HAL_CBACK(bt_gatt_callbacks, server->request_exec_write_cb,
    320                       p_data->req_data.conn_id,p_data->req_data.trans_id, &bda,
    321                       p_data->req_data.p_data->exec_write);
    322             break;
    323         }
    324 
    325         case BTA_GATTS_CONF_EVT:
    326             HAL_CBACK(bt_gatt_callbacks, server->indication_sent_cb,
    327                       p_data->req_data.conn_id, p_data->req_data.status);
    328             break;
    329 
    330         case BTA_GATTS_CONGEST_EVT:
    331             HAL_CBACK(bt_gatt_callbacks, server->congestion_cb
    332                 , p_data->congest.conn_id
    333                 , p_data->congest.congested
    334             );
    335             break;
    336 
    337         case BTA_GATTS_MTU_EVT:
    338             HAL_CBACK(bt_gatt_callbacks, server->mtu_changed_cb
    339                 , p_data->req_data.conn_id
    340                 , p_data->req_data.p_data->mtu
    341             );
    342             break;
    343 
    344         case BTA_GATTS_OPEN_EVT:
    345         case BTA_GATTS_CANCEL_OPEN_EVT:
    346         case BTA_GATTS_CLOSE_EVT:
    347             ALOGD("%s: Empty event (%d)!", __FUNCTION__, event);
    348             break;
    349 
    350         default:
    351             ALOGE("%s: Unhandled event (%d)!", __FUNCTION__, event);
    352             break;
    353     }
    354 
    355     btapp_gatts_free_req_data(event, p_data);
    356 }
    357 
    358 static void btapp_gatts_cback(tBTA_GATTS_EVT event, tBTA_GATTS *p_data)
    359 {
    360     bt_status_t status;
    361     status = btif_transfer_context(btapp_gatts_handle_cback, (uint16_t) event,
    362         (void*)p_data, sizeof(tBTA_GATTS), btapp_gatts_copy_req_data);
    363     ASSERTC(status == BT_STATUS_SUCCESS, "Context transfer failed!", status);
    364 }
    365 
    366 static void btgatts_handle_event(uint16_t event, char* p_param)
    367 {
    368     btif_gatts_cb_t* p_cb = (btif_gatts_cb_t*)p_param;
    369     if (!p_cb) return;
    370 
    371     ALOGD("%s: Event %d", __FUNCTION__, event);
    372 
    373     switch (event)
    374     {
    375         case BTIF_GATTS_REGISTER_APP:
    376         {
    377             tBT_UUID uuid;
    378             btif_to_bta_uuid(&uuid, &p_cb->uuid);
    379             BTA_GATTS_AppRegister(&uuid, btapp_gatts_cback);
    380             break;
    381         }
    382 
    383         case BTIF_GATTS_UNREGISTER_APP:
    384             BTA_GATTS_AppDeregister(p_cb->server_if);
    385             break;
    386 
    387         case BTIF_GATTS_OPEN:
    388         {
    389             // Ensure device is in inquiry database
    390             int addr_type = 0;
    391             int device_type = 0;
    392             tBTA_GATT_TRANSPORT transport = BTA_GATT_TRANSPORT_LE;
    393 
    394             if (btif_get_address_type(p_cb->bd_addr.address, &addr_type) &&
    395                 btif_get_device_type(p_cb->bd_addr.address, &device_type) &&
    396                 device_type != BT_DEVICE_TYPE_BREDR)
    397             {
    398                 BTA_DmAddBleDevice(p_cb->bd_addr.address, addr_type, device_type);
    399             }
    400 
    401             // Mark background connections
    402             if (!p_cb->is_direct)
    403                 BTA_DmBleSetBgConnType(BTM_BLE_CONN_AUTO, NULL);
    404 
    405             switch(device_type)
    406             {
    407                 case BT_DEVICE_TYPE_BREDR:
    408                     transport = BTA_GATT_TRANSPORT_BR_EDR;
    409                     break;
    410 
    411                 case BT_DEVICE_TYPE_BLE:
    412                     transport = BTA_GATT_TRANSPORT_LE;
    413                     break;
    414 
    415                 case BT_DEVICE_TYPE_DUMO:
    416                     if ((p_cb->transport == GATT_TRANSPORT_LE) &&
    417                         (btif_storage_is_dmt_supported_device(&(p_cb->bd_addr)) == TRUE))
    418                         transport = BTA_GATT_TRANSPORT_LE;
    419                     else
    420                         transport = BTA_GATT_TRANSPORT_BR_EDR;
    421                     break;
    422 
    423                 default:
    424                     BTIF_TRACE_ERROR (" GATT Open :Invalid device type %d",device_type);
    425                     return;
    426             }
    427 
    428             // Connect!
    429             BTA_GATTS_Open(p_cb->server_if, p_cb->bd_addr.address,
    430                            p_cb->is_direct, transport);
    431             break;
    432         }
    433 
    434         case BTIF_GATTS_CLOSE:
    435             // Cancel pending foreground/background connections
    436             BTA_GATTS_CancelOpen(p_cb->server_if, p_cb->bd_addr.address, TRUE);
    437             BTA_GATTS_CancelOpen(p_cb->server_if, p_cb->bd_addr.address, FALSE);
    438 
    439             // Close active connection
    440             if (p_cb->conn_id != 0)
    441                 BTA_GATTS_Close(p_cb->conn_id);
    442             break;
    443 
    444         case BTIF_GATTS_CREATE_SERVICE:
    445         {
    446             tBTA_GATT_SRVC_ID srvc_id;
    447             btif_to_bta_srvc_id(&srvc_id, &p_cb->srvc_id);
    448             BTA_GATTS_CreateService(p_cb->server_if, &srvc_id.id.uuid,
    449                                     srvc_id.id.inst_id, p_cb->num_handles,
    450                                     srvc_id.is_primary);
    451             break;
    452         }
    453 
    454         case BTIF_GATTS_ADD_INCLUDED_SERVICE:
    455             BTA_GATTS_AddIncludeService(p_cb->srvc_handle, p_cb->incl_handle);
    456             break;
    457 
    458         case BTIF_GATTS_ADD_CHARACTERISTIC:
    459         {
    460             tBT_UUID uuid;
    461             btif_to_bta_uuid(&uuid, &p_cb->uuid);
    462 
    463             BTA_GATTS_AddCharacteristic(p_cb->srvc_handle, &uuid,
    464                                         p_cb->permissions, p_cb->properties);
    465             break;
    466         }
    467 
    468         case BTIF_GATTS_ADD_DESCRIPTOR:
    469         {
    470             tBT_UUID uuid;
    471             btif_to_bta_uuid(&uuid, &p_cb->uuid);
    472 
    473             BTA_GATTS_AddCharDescriptor(p_cb->srvc_handle, p_cb->permissions,
    474                                          &uuid);
    475             break;
    476         }
    477 
    478         case BTIF_GATTS_START_SERVICE:
    479             BTA_GATTS_StartService(p_cb->srvc_handle, p_cb->transport);
    480             break;
    481 
    482         case BTIF_GATTS_STOP_SERVICE:
    483             BTA_GATTS_StopService(p_cb->srvc_handle);
    484             break;
    485 
    486         case BTIF_GATTS_DELETE_SERVICE:
    487             BTA_GATTS_DeleteService(p_cb->srvc_handle);
    488             break;
    489 
    490         case BTIF_GATTS_SEND_INDICATION:
    491             BTA_GATTS_HandleValueIndication(p_cb->conn_id, p_cb->attr_handle,
    492                                         p_cb->len, p_cb->value, p_cb->confirm);
    493             // TODO: Might need to send an ACK if handle value indication is
    494             //       invoked without need for confirmation.
    495             break;
    496 
    497         case BTIF_GATTS_SEND_RESPONSE:
    498         {
    499             tBTA_GATTS_RSP rsp_struct;
    500             btgatt_response_t *p_rsp = &p_cb->response;
    501             btif_to_bta_response(&rsp_struct, p_rsp);
    502 
    503             BTA_GATTS_SendRsp(p_cb->conn_id, p_cb->trans_id,
    504                               p_cb->status, &rsp_struct);
    505 
    506             HAL_CBACK(bt_gatt_callbacks, server->response_confirmation_cb,
    507                       0, rsp_struct.attr_value.handle);
    508             break;
    509         }
    510 
    511         default:
    512             ALOGE("%s: Unknown event (%d)!", __FUNCTION__, event);
    513             break;
    514     }
    515 }
    516 
    517 /************************************************************************************
    518 **  Server API Functions
    519 ************************************************************************************/
    520 
    521 static bt_status_t btif_gatts_register_app(bt_uuid_t *uuid)
    522 {
    523     CHECK_BTGATT_INIT();
    524     btif_gatts_cb_t btif_cb;
    525     memcpy(&btif_cb.uuid, uuid, sizeof(bt_uuid_t));
    526     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_REGISTER_APP,
    527                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    528 }
    529 
    530 static bt_status_t btif_gatts_unregister_app( int server_if )
    531 {
    532     CHECK_BTGATT_INIT();
    533     btif_gatts_cb_t btif_cb;
    534     btif_cb.server_if = (uint8_t) server_if;
    535     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_UNREGISTER_APP,
    536                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    537 }
    538 
    539 static bt_status_t btif_gatts_open( int server_if, const bt_bdaddr_t *bd_addr,
    540                                       bool is_direct, int transport )
    541 {
    542     CHECK_BTGATT_INIT();
    543     btif_gatts_cb_t btif_cb;
    544     btif_cb.server_if = (uint8_t) server_if;
    545     btif_cb.is_direct = is_direct ? 1 : 0;
    546     btif_cb.transport = (btgatt_transport_t)transport;
    547     bdcpy(btif_cb.bd_addr.address, bd_addr->address);
    548     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_OPEN,
    549                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    550 }
    551 
    552 static bt_status_t btif_gatts_close(int server_if, const bt_bdaddr_t *bd_addr, int conn_id)
    553 {
    554     CHECK_BTGATT_INIT();
    555     btif_gatts_cb_t btif_cb;
    556     btif_cb.server_if = (uint8_t) server_if;
    557     btif_cb.conn_id = (uint16_t) conn_id;
    558     bdcpy(btif_cb.bd_addr.address, bd_addr->address);
    559     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_CLOSE,
    560                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    561 }
    562 
    563 static bt_status_t btif_gatts_add_service(int server_if, btgatt_srvc_id_t *srvc_id,
    564                                           int num_handles)
    565 {
    566     CHECK_BTGATT_INIT();
    567     btif_gatts_cb_t btif_cb;
    568     btif_cb.server_if = (uint8_t) server_if;
    569     btif_cb.num_handles = (uint8_t) num_handles;
    570     memcpy(&btif_cb.srvc_id, srvc_id, sizeof(btgatt_srvc_id_t));
    571     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_CREATE_SERVICE,
    572                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    573 }
    574 
    575 static bt_status_t btif_gatts_add_included_service(int server_if, int service_handle,
    576                                                    int included_handle)
    577 {
    578     CHECK_BTGATT_INIT();
    579     btif_gatts_cb_t btif_cb;
    580     btif_cb.server_if = (uint8_t) server_if;
    581     btif_cb.srvc_handle = (uint16_t) service_handle;
    582     btif_cb.incl_handle = (uint16_t) included_handle;
    583     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_ADD_INCLUDED_SERVICE,
    584                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    585 }
    586 
    587 static bt_status_t btif_gatts_add_characteristic(int server_if, int service_handle,
    588                                                  bt_uuid_t *uuid, int properties,
    589                                                  int permissions)
    590 {
    591     CHECK_BTGATT_INIT();
    592     btif_gatts_cb_t btif_cb;
    593     btif_cb.server_if = (uint8_t) server_if;
    594     btif_cb.srvc_handle = (uint16_t) service_handle;
    595     btif_cb.properties = (uint8_t) properties;
    596     btif_cb.permissions = (uint16_t) permissions;
    597     memcpy(&btif_cb.uuid, uuid, sizeof(bt_uuid_t));
    598     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_ADD_CHARACTERISTIC,
    599                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    600 }
    601 
    602 static bt_status_t btif_gatts_add_descriptor(int server_if, int service_handle, bt_uuid_t *uuid,
    603                                              int permissions)
    604 {
    605     CHECK_BTGATT_INIT();
    606     btif_gatts_cb_t btif_cb;
    607     btif_cb.server_if = (uint8_t) server_if;
    608     btif_cb.srvc_handle = (uint16_t) service_handle;
    609     btif_cb.permissions = (uint16_t) permissions;
    610     memcpy(&btif_cb.uuid, uuid, sizeof(bt_uuid_t));
    611     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_ADD_DESCRIPTOR,
    612                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    613 }
    614 
    615 static bt_status_t btif_gatts_start_service(int server_if, int service_handle, int transport)
    616 {
    617     CHECK_BTGATT_INIT();
    618     btif_gatts_cb_t btif_cb;
    619     btif_cb.server_if = (uint8_t) server_if;
    620     btif_cb.srvc_handle = (uint16_t) service_handle;
    621     btif_cb.transport = (uint8_t) transport;
    622     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_START_SERVICE,
    623                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    624 }
    625 
    626 static bt_status_t btif_gatts_stop_service(int server_if, int service_handle)
    627 {
    628     CHECK_BTGATT_INIT();
    629     btif_gatts_cb_t btif_cb;
    630     btif_cb.server_if = (uint8_t) server_if;
    631     btif_cb.srvc_handle = (uint16_t) service_handle;
    632     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_STOP_SERVICE,
    633                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    634 }
    635 
    636 static bt_status_t btif_gatts_delete_service(int server_if, int service_handle)
    637 {
    638     CHECK_BTGATT_INIT();
    639     btif_gatts_cb_t btif_cb;
    640     btif_cb.server_if = (uint8_t) server_if;
    641     btif_cb.srvc_handle = (uint16_t) service_handle;
    642     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_DELETE_SERVICE,
    643                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    644 }
    645 
    646 static bt_status_t btif_gatts_send_indication(int server_if, int attribute_handle, int conn_id,
    647                                               int len, int confirm, char* p_value)
    648 {
    649     CHECK_BTGATT_INIT();
    650     btif_gatts_cb_t btif_cb;
    651     btif_cb.server_if = (uint8_t) server_if;
    652     btif_cb.conn_id = (uint16_t) conn_id;
    653     btif_cb.attr_handle = attribute_handle;
    654     btif_cb.confirm = confirm;
    655     btif_cb.len = len;
    656     memcpy(btif_cb.value, p_value, len > BTGATT_MAX_ATTR_LEN ? BTGATT_MAX_ATTR_LEN : len);
    657     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_SEND_INDICATION,
    658                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    659 }
    660 
    661 static bt_status_t btif_gatts_send_response(int conn_id, int trans_id,
    662                                             int status, btgatt_response_t *response)
    663 {
    664     CHECK_BTGATT_INIT();
    665     btif_gatts_cb_t btif_cb;
    666     btif_cb.conn_id = (uint16_t) conn_id;
    667     btif_cb.trans_id = (uint32_t) trans_id;
    668     btif_cb.status = (uint8_t) status;
    669     memcpy(&btif_cb.response, response, sizeof(btgatt_response_t));
    670     return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_SEND_RESPONSE,
    671                                  (char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
    672 }
    673 
    674 const btgatt_server_interface_t btgattServerInterface = {
    675     btif_gatts_register_app,
    676     btif_gatts_unregister_app,
    677     btif_gatts_open,
    678     btif_gatts_close,
    679     btif_gatts_add_service,
    680     btif_gatts_add_included_service,
    681     btif_gatts_add_characteristic,
    682     btif_gatts_add_descriptor,
    683     btif_gatts_start_service,
    684     btif_gatts_stop_service,
    685     btif_gatts_delete_service,
    686     btif_gatts_send_indication,
    687     btif_gatts_send_response
    688 };
    689 
    690 #endif
    691