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
46 static 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
bta_mce_search_cback(UINT16 result,void * user_data)61 static 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 *******************************************************************************/
bta_mce_enable(tBTA_MCE_MSG * p_data)131 void 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 *******************************************************************************/
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 {
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