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      1 /******************************************************************************
      2  *
      3  *  Copyright (C) 2009-2012 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_sock.c
     23  *
     24  *  Description:   Bluetooth Socket Interface
     25  *
     26  *
     27  ***********************************************************************************/
     28 
     29 #include <hardware/bluetooth.h>
     30 #include <hardware/bt_sock.h>
     31 
     32 #define LOG_TAG "BTIF_SOCK"
     33 #include "btif_common.h"
     34 #include "btif_util.h"
     35 
     36 #include "bd.h"
     37 
     38 #include "bta_api.h"
     39 #include "btif_sock_thread.h"
     40 #include "btif_sock_rfc.h"
     41 
     42 static bt_status_t btsock_listen(btsock_type_t type, const char* service_name,
     43                                 const uint8_t* uuid, int channel, int* sock_fd, int flags);
     44 static bt_status_t btsock_connect(const bt_bdaddr_t *bd_addr, btsock_type_t type,
     45                                   const uint8_t* uuid, int channel, int* sock_fd, int flags);
     46 
     47 static void btsock_signaled(int fd, int type, int flags, uint32_t user_id);
     48 
     49 /*******************************************************************************
     50 **
     51 ** Function         btsock_ini
     52 **
     53 ** Description     initializes the bt socket interface
     54 **
     55 ** Returns         bt_status_t
     56 **
     57 *******************************************************************************/
     58 static btsock_interface_t sock_if = {
     59                 sizeof(sock_if),
     60                 btsock_listen,
     61                 btsock_connect
     62        };
     63 btsock_interface_t *btif_sock_get_interface()
     64 {
     65     return &sock_if;
     66 }
     67 bt_status_t btif_sock_init()
     68 {
     69     static volatile int binit;
     70     if(!binit)
     71     {
     72         //fix me, the process doesn't exit right now. don't set the init flag for now
     73         //binit = 1;
     74         BTIF_TRACE_DEBUG0("btsock initializing...");
     75         btsock_thread_init();
     76         int handle = btsock_thread_create(btsock_signaled, NULL);
     77         if(handle >= 0 && btsock_rfc_init(handle) == BT_STATUS_SUCCESS)
     78         {
     79             BTIF_TRACE_DEBUG0("btsock successfully initialized");
     80             return BT_STATUS_SUCCESS;
     81         }
     82     }
     83     else BTIF_TRACE_ERROR0("btsock interface already initialized");
     84     return BT_STATUS_FAIL;
     85 }
     86 void btif_sock_cleanup()
     87 {
     88     btsock_rfc_cleanup();
     89     BTIF_TRACE_DEBUG0("leaving");
     90 }
     91 
     92 static bt_status_t btsock_listen(btsock_type_t type, const char* service_name,
     93         const uint8_t* service_uuid, int channel, int* sock_fd, int flags)
     94 {
     95     if((service_uuid == NULL && channel <= 0) || sock_fd == NULL)
     96     {
     97         BTIF_TRACE_ERROR3("invalid parameters, uuid:%p, channel:%d, sock_fd:%p", service_uuid, channel, sock_fd);
     98         return BT_STATUS_PARM_INVALID;
     99     }
    100     *sock_fd = -1;
    101     bt_status_t status = BT_STATUS_FAIL;
    102     switch(type)
    103     {
    104         case BTSOCK_RFCOMM:
    105             status = btsock_rfc_listen(service_name, service_uuid, channel, sock_fd, flags);
    106             break;
    107         case BTSOCK_L2CAP:
    108             BTIF_TRACE_ERROR1("bt l2cap socket type not supported, type:%d", type);
    109             status = BT_STATUS_UNSUPPORTED;
    110             break;
    111         case BTSOCK_SCO:
    112             BTIF_TRACE_ERROR1("bt sco socket not supported, type:%d", type);
    113             status = BT_STATUS_UNSUPPORTED;
    114             break;
    115         default:
    116             BTIF_TRACE_ERROR1("unknown bt socket type:%d", type);
    117             status = BT_STATUS_UNSUPPORTED;
    118             break;
    119     }
    120     return status;
    121 }
    122 static bt_status_t btsock_connect(const bt_bdaddr_t *bd_addr, btsock_type_t type,
    123         const uint8_t* uuid, int channel, int* sock_fd, int flags)
    124 {
    125     if((uuid == NULL && channel <= 0) || bd_addr == NULL || sock_fd == NULL)
    126     {
    127         BTIF_TRACE_ERROR4("invalid parameters, bd_addr:%p, uuid:%p, channel:%d, sock_fd:%p",
    128                 bd_addr, uuid, channel, sock_fd);
    129         return BT_STATUS_PARM_INVALID;
    130     }
    131     *sock_fd = -1;
    132     bt_status_t status = BT_STATUS_FAIL;
    133     switch(type)
    134     {
    135         case BTSOCK_RFCOMM:
    136             status = btsock_rfc_connect(bd_addr, uuid, channel, sock_fd, flags);
    137             break;
    138         case BTSOCK_L2CAP:
    139             BTIF_TRACE_ERROR1("bt l2cap socket type not supported, type:%d", type);
    140             status = BT_STATUS_UNSUPPORTED;
    141             break;
    142         case BTSOCK_SCO:
    143             BTIF_TRACE_ERROR1("bt sco socket not supported, type:%d", type);
    144             status = BT_STATUS_UNSUPPORTED;
    145             break;
    146         default:
    147             BTIF_TRACE_ERROR1("unknown bt socket type:%d", type);
    148             status = BT_STATUS_UNSUPPORTED;
    149             break;
    150     }
    151     return status;
    152 }
    153 static void btsock_signaled(int fd, int type, int flags, uint32_t user_id)
    154 {
    155     switch(type)
    156     {
    157         case BTSOCK_RFCOMM:
    158             btsock_rfc_signaled(fd, flags, user_id);
    159             break;
    160         case BTSOCK_L2CAP:
    161             BTIF_TRACE_ERROR2("bt l2cap socket type not supported, fd:%d, flags:%d", fd, flags);
    162             break;
    163         case BTSOCK_SCO:
    164             BTIF_TRACE_ERROR2("bt sco socket type not supported, fd:%d, flags:%d", fd, flags);
    165             break;
    166         default:
    167             BTIF_TRACE_ERROR3("unknown socket type:%d, fd:%d, flags:%d", type, fd, flags);
    168             break;
    169     }
    170 }
    171 
    172 
    173 
    174