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