1 /******************************************************************************
2 *
3 * Copyright 2014 The Android Open Source Project
4 * Copyright 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 <arpa/inet.h>
27 #include <hardware/bluetooth.h>
28
29 #include <string.h>
30 #include "bt_common.h"
31 #include "bt_types.h"
32 #include "bta_api.h"
33 #include "bta_mce_api.h"
34 #include "bta_mce_int.h"
35 #include "bta_sys.h"
36 #include "btm_api.h"
37 #include "btm_int.h"
38 #include "sdp_api.h"
39 #include "utl.h"
40
41 using bluetooth::Uuid;
42
43 /*****************************************************************************
44 * Constants
45 ****************************************************************************/
46
47 static const Uuid bta_mce_mas_uuid =
48 Uuid::From16Bit(UUID_SERVCLASS_MESSAGE_ACCESS);
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_t result,void * user_data)60 static void bta_mce_search_cback(uint16_t result, void* user_data) {
61 tSDP_DISC_REC* p_rec = NULL;
62 tBTA_MCE_MAS_DISCOVERY_COMP evt_data;
63 int found = 0;
64
65 APPL_TRACE_DEBUG("bta_mce_start_discovery_cback res: 0x%x", result);
66
67 bta_mce_cb.sdp_active = BTA_MCE_SDP_ACT_NONE;
68
69 if (bta_mce_cb.p_dm_cback == NULL) return;
70
71 evt_data.status = BTA_MCE_FAILURE;
72 evt_data.remote_addr = bta_mce_cb.remote_addr;
73 evt_data.num_mas = 0;
74
75 if (result == SDP_SUCCESS || result == SDP_DB_FULL) {
76 do {
77 tSDP_DISC_ATTR* p_attr;
78 tSDP_PROTOCOL_ELEM pe;
79
80 p_rec = SDP_FindServiceUUIDInDb(p_bta_mce_cfg->p_sdp_db, bta_mce_mas_uuid,
81 p_rec);
82
83 APPL_TRACE_DEBUG("p_rec:%p", p_rec);
84
85 if (p_rec == NULL) break;
86
87 if (!SDP_FindProtocolListElemInRec(p_rec, UUID_PROTOCOL_RFCOMM, &pe))
88 continue;
89
90 evt_data.mas[found].scn = pe.params[0];
91
92 p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SERVICE_NAME);
93 if (p_attr == NULL) continue;
94
95 evt_data.mas[found].p_srv_name = (char*)p_attr->attr_value.v.array;
96 evt_data.mas[found].srv_name_len =
97 SDP_DISC_ATTR_LEN(p_attr->attr_len_type);
98
99 p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_MAS_INSTANCE_ID);
100 if (p_attr == NULL) break;
101
102 evt_data.mas[found].instance_id = p_attr->attr_value.v.u8;
103
104 p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_MSG_TYPE);
105 if (p_attr == NULL) break;
106
107 evt_data.mas[found].msg_type = p_attr->attr_value.v.u8;
108
109 found++;
110 } while (p_rec != NULL && found < BTA_MCE_MAX_MAS_INSTANCES);
111
112 evt_data.num_mas = found;
113 evt_data.status = BTA_MCE_SUCCESS;
114 }
115
116 tBTA_MCE bta_mce;
117 bta_mce.mas_disc_comp = evt_data;
118 bta_mce_cb.p_dm_cback(BTA_MCE_MAS_DISCOVERY_COMP_EVT, &bta_mce, 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 tBTA_MCE_STATUS status = BTA_MCE_SUCCESS;
132 bta_mce_cb.p_dm_cback = p_data->enable.p_cback;
133 tBTA_MCE bta_mce;
134 bta_mce.status = status;
135 bta_mce_cb.p_dm_cback(BTA_MCE_ENABLE_EVT, &bta_mce, 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 ******************************************************************************/
bta_mce_get_remote_mas_instances(tBTA_MCE_MSG * p_data)147 void bta_mce_get_remote_mas_instances(tBTA_MCE_MSG* p_data) {
148 if (p_data == NULL) {
149 APPL_TRACE_DEBUG("MCE control block handle is null");
150 return;
151 }
152 tBTA_MCE_STATUS status = BTA_MCE_FAILURE;
153
154 APPL_TRACE_DEBUG("%s in, sdp_active:%d", __func__, bta_mce_cb.sdp_active);
155
156 if (bta_mce_cb.sdp_active != BTA_MCE_SDP_ACT_NONE) {
157 /* SDP is still in progress */
158 status = BTA_MCE_BUSY;
159 if (bta_mce_cb.p_dm_cback) {
160 tBTA_MCE bta_mce;
161 bta_mce.status = status;
162 bta_mce_cb.p_dm_cback(BTA_MCE_MAS_DISCOVERY_COMP_EVT, &bta_mce, NULL);
163 }
164
165 return;
166 }
167
168 bta_mce_cb.sdp_active = BTA_MCE_SDP_ACT_YES;
169 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 &bta_mce_mas_uuid, 0, NULL);
173
174 if (!SDP_ServiceSearchAttributeRequest2(p_data->get_rmt_mas.bd_addr,
175 p_bta_mce_cfg->p_sdp_db,
176 bta_mce_search_cback, NULL)) {
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 tBTA_MCE bta_mce;
182 bta_mce.status = status;
183 bta_mce_cb.p_dm_cback(BTA_MCE_MAS_DISCOVERY_COMP_EVT, &bta_mce, NULL);
184 }
185 }
186 /*
187 else report the result when the cback is called
188 */
189 }
190