1/******************************************************************************
2 *
3 *  Copyright (C) 2014 The Android Open Source Project
4 *  Copyright (C) 2003-2012 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 *  This file contains action functions for MCE.
23 *
24 ******************************************************************************/
25
26#include <hardware/bluetooth.h>
27#include <arpa/inet.h>
28
29#include "bt_types.h"
30#include "gki.h"
31#include "bd.h"
32#include "utl.h"
33#include "bta_sys.h"
34#include "bta_api.h"
35#include "bta_mce_api.h"
36#include "bta_mce_int.h"
37#include "btm_api.h"
38#include "btm_int.h"
39#include "sdp_api.h"
40#include <string.h>
41
42/*****************************************************************************
43**  Constants
44*****************************************************************************/
45
46static const tBT_UUID bta_mce_mas_uuid = {
47    .len = 2,
48    .uu.uuid16 = UUID_SERVCLASS_MESSAGE_ACCESS
49};
50
51/*******************************************************************************
52**
53** Function     bta_mce_search_cback
54**
55** Description  Callback from btm after search is completed
56**
57** Returns      void
58**
59*******************************************************************************/
60
61static void bta_mce_search_cback(UINT16 result, void * user_data)
62{
63    tSDP_DISC_REC *p_rec = NULL;
64    tBTA_MCE_MAS_DISCOVERY_COMP evt_data;
65    int found = 0;
66
67    APPL_TRACE_DEBUG("bta_mce_start_discovery_cback res: 0x%x", result);
68
69    bta_mce_cb.sdp_active = BTA_MCE_SDP_ACT_NONE;
70
71    if (bta_mce_cb.p_dm_cback == NULL) return;
72
73    evt_data.status = BTA_MCE_FAILURE;
74    bdcpy(evt_data.remote_addr, bta_mce_cb.remote_addr);
75    evt_data.num_mas = 0;
76
77    if (result == SDP_SUCCESS || result == SDP_DB_FULL)
78    {
79        do
80        {
81            tSDP_DISC_ATTR *p_attr;
82            tSDP_PROTOCOL_ELEM pe;
83
84            p_rec = SDP_FindServiceUUIDInDb(p_bta_mce_cfg->p_sdp_db, (tBT_UUID*) &bta_mce_mas_uuid, p_rec);
85
86            APPL_TRACE_DEBUG("p_rec:%p", p_rec);
87
88            if (p_rec == NULL)
89                break;
90
91            if (!SDP_FindProtocolListElemInRec(p_rec, UUID_PROTOCOL_RFCOMM, &pe))
92                continue;
93
94            evt_data.mas[found].scn = pe.params[0];
95
96            if ((p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SERVICE_NAME)) == NULL)
97                continue;
98
99            evt_data.mas[found].p_srv_name = (char *) p_attr->attr_value.v.array;
100            evt_data.mas[found].srv_name_len= SDP_DISC_ATTR_LEN(p_attr->attr_len_type);
101
102            if ((p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_MAS_INSTANCE_ID)) == NULL)
103                break;
104
105                 evt_data.mas[found].instance_id = p_attr->attr_value.v.u8;
106
107            if ((p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_MSG_TYPE)) == NULL)
108                break;
109
110            evt_data.mas[found].msg_type = p_attr->attr_value.v.u8;
111
112            found++;
113        } while (p_rec != NULL && found < BTA_MCE_MAX_MAS_INSTANCES);
114
115        evt_data.num_mas = found;
116        evt_data.status = BTA_MCE_SUCCESS;
117    }
118
119    bta_mce_cb.p_dm_cback(BTA_MCE_MAS_DISCOVERY_COMP_EVT, (tBTA_MCE*) &evt_data, user_data);
120}
121
122/*******************************************************************************
123**
124** Function     bta_mce_enable
125**
126** Description  Initializes the MCE I/F
127**
128** Returns      void
129**
130*******************************************************************************/
131void bta_mce_enable(tBTA_MCE_MSG *p_data)
132{
133    tBTA_MCE_STATUS status = BTA_MCE_SUCCESS;
134    bta_mce_cb.p_dm_cback = p_data->enable.p_cback;
135    bta_mce_cb.p_dm_cback(BTA_MCE_ENABLE_EVT, (tBTA_MCE *)&status, NULL);
136}
137
138/*******************************************************************************
139**
140** Function     bta_mce_get_remote_mas_instances
141**
142** Description  Discovers MAS instances on remote device
143**
144** Returns      void
145**
146*******************************************************************************/
147void bta_mce_get_remote_mas_instances(tBTA_MCE_MSG *p_data)
148{
149    if(p_data == NULL)
150    {
151    APPL_TRACE_DEBUG("MCE control block handle is null");
152    return;
153    }
154    tBTA_MCE_STATUS status = BTA_MCE_FAILURE;
155
156    APPL_TRACE_DEBUG("%s in, sdp_active:%d", __FUNCTION__, bta_mce_cb.sdp_active);
157
158    if (bta_mce_cb.sdp_active != BTA_MCE_SDP_ACT_NONE)
159    {
160        /* SDP is still in progress */
161        status = BTA_MCE_BUSY;
162        if(bta_mce_cb.p_dm_cback)
163            bta_mce_cb.p_dm_cback(BTA_MCE_MAS_DISCOVERY_COMP_EVT, (tBTA_MCE *)&status, NULL);
164
165        return;
166    }
167
168    bta_mce_cb.sdp_active = BTA_MCE_SDP_ACT_YES;
169    bdcpy(bta_mce_cb.remote_addr, p_data->get_rmt_mas.bd_addr);
170
171    SDP_InitDiscoveryDb (p_bta_mce_cfg->p_sdp_db, p_bta_mce_cfg->sdp_db_size, 1,
172                                (tBT_UUID*) &bta_mce_mas_uuid, 0, NULL);
173
174    if (!SDP_ServiceSearchAttributeRequest2(p_data->get_rmt_mas.bd_addr, p_bta_mce_cfg->p_sdp_db,
175                                                bta_mce_search_cback, NULL))
176    {
177        bta_mce_cb.sdp_active = BTA_MCE_SDP_ACT_NONE;
178
179        /* failed to start SDP. report the failure right away */
180        if (bta_mce_cb.p_dm_cback)
181            bta_mce_cb.p_dm_cback(BTA_MCE_MAS_DISCOVERY_COMP_EVT, (tBTA_MCE *)&status, NULL);
182    }
183    /*
184    else report the result when the cback is called
185    */
186}
187