1 /******************************************************************************
2 *
3 * Copyright 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_mce.c
23 *
24 * Description: Message Access Profile (MCE role) Bluetooth Interface
25 *
26 *
27 ******************************************************************************/
28
29 #define LOG_TAG "bt_btif_mce"
30
31 #include <stdlib.h>
32 #include <string.h>
33
34 #include <hardware/bluetooth.h>
35 #include <hardware/bt_mce.h>
36
37 #include "bt_types.h"
38 #include "bta_api.h"
39 #include "bta_mce_api.h"
40 #include "btif_common.h"
41 #include "btif_util.h"
42
43 /*****************************************************************************
44 * Static variables
45 *****************************************************************************/
46
47 static btmce_callbacks_t* bt_mce_callbacks = NULL;
48
btif_mce_mas_discovery_comp_evt(uint16_t event,char * p_param)49 static void btif_mce_mas_discovery_comp_evt(uint16_t event, char* p_param) {
50 tBTA_MCE_MAS_DISCOVERY_COMP* evt_data = (tBTA_MCE_MAS_DISCOVERY_COMP*)p_param;
51 btmce_mas_instance_t insts[BTA_MCE_MAX_MAS_INSTANCES];
52 int i;
53
54 BTIF_TRACE_EVENT("%s: event = %d", __func__, event);
55
56 if (event != BTA_MCE_MAS_DISCOVERY_COMP_EVT) return;
57
58 for (i = 0; i < evt_data->num_mas; i++) {
59 insts[i].id = evt_data->mas[i].instance_id;
60 insts[i].scn = evt_data->mas[i].scn;
61 insts[i].msg_types = evt_data->mas[i].msg_type;
62 insts[i].p_name = evt_data->mas[i].p_srv_name;
63 }
64
65 RawAddress addr = evt_data->remote_addr;
66 HAL_CBACK(bt_mce_callbacks, remote_mas_instances_cb,
67 (bt_status_t)evt_data->status, &addr, evt_data->num_mas, insts);
68 }
69
mas_discovery_comp_copy_cb(uint16_t event,char * p_dest,char * p_src)70 static void mas_discovery_comp_copy_cb(uint16_t event, char* p_dest,
71 char* p_src) {
72 tBTA_MCE_MAS_DISCOVERY_COMP* p_dest_data =
73 (tBTA_MCE_MAS_DISCOVERY_COMP*)p_dest;
74 tBTA_MCE_MAS_DISCOVERY_COMP* p_src_data = (tBTA_MCE_MAS_DISCOVERY_COMP*)p_src;
75 char* p_dest_str;
76 int i;
77
78 if (!p_src) return;
79
80 if (event != BTA_MCE_MAS_DISCOVERY_COMP_EVT) return;
81
82 maybe_non_aligned_memcpy(p_dest_data, p_src_data, sizeof(*p_src_data));
83
84 p_dest_str = p_dest + sizeof(tBTA_MCE_MAS_DISCOVERY_COMP);
85
86 for (i = 0; i < p_src_data->num_mas; i++) {
87 p_dest_data->mas[i].p_srv_name = p_dest_str;
88 memcpy(p_dest_str, p_src_data->mas[i].p_srv_name,
89 p_src_data->mas[i].srv_name_len);
90 p_dest_str += p_src_data->mas[i].srv_name_len;
91 *(p_dest_str++) = '\0';
92 }
93 }
94
mce_dm_cback(tBTA_MCE_EVT event,tBTA_MCE * p_data,void * user_data)95 static void mce_dm_cback(tBTA_MCE_EVT event, tBTA_MCE* p_data,
96 void* user_data) {
97 switch (event) {
98 case BTA_MCE_MAS_DISCOVERY_COMP_EVT: {
99 int i;
100 uint16_t param_len = sizeof(tBTA_MCE);
101
102 /* include space for all p_srv_name copies including null-termination */
103 for (i = 0; i < p_data->mas_disc_comp.num_mas; i++)
104 param_len += (p_data->mas_disc_comp.mas[i].srv_name_len + 1);
105
106 /* need to deepy copy p_srv_name and null-terminate */
107 btif_transfer_context(btif_mce_mas_discovery_comp_evt, event,
108 (char*)p_data, param_len,
109 mas_discovery_comp_copy_cb);
110
111 break;
112 }
113 }
114 }
115
init(btmce_callbacks_t * callbacks)116 static bt_status_t init(btmce_callbacks_t* callbacks) {
117 BTIF_TRACE_EVENT("%s", __func__);
118
119 bt_mce_callbacks = callbacks;
120
121 btif_enable_service(BTA_MAP_SERVICE_ID);
122
123 return BT_STATUS_SUCCESS;
124 }
125
get_remote_mas_instances(RawAddress * bd_addr)126 static bt_status_t get_remote_mas_instances(RawAddress* bd_addr) {
127 VLOG(2) << __func__ << ": remote_addr=" << bd_addr;
128
129 BTA_MceGetRemoteMasInstances(*bd_addr);
130
131 return BT_STATUS_SUCCESS;
132 }
133
134 static const btmce_interface_t mce_if = {
135 sizeof(btmce_interface_t), init, get_remote_mas_instances,
136 };
137
btif_mce_get_interface(void)138 const btmce_interface_t* btif_mce_get_interface(void) {
139 BTIF_TRACE_EVENT("%s", __func__);
140 return &mce_if;
141 }
142
143 /*******************************************************************************
144 *
145 * Function btif_mce_execute_service
146 *
147 * Description Initializes/Shuts down the service
148 *
149 * Returns BT_STATUS_SUCCESS on success, BT_STATUS_FAIL otherwise
150 *
151 ******************************************************************************/
btif_mce_execute_service(bool b_enable)152 bt_status_t btif_mce_execute_service(bool b_enable) {
153 BTIF_TRACE_EVENT("%s enable:%d", __func__, b_enable);
154
155 if (b_enable) {
156 BTA_MceEnable(mce_dm_cback);
157 } else {
158 /* This is called on BT disable so no need to extra cleanup */
159 }
160 return BT_STATUS_SUCCESS;
161 }
162