1 /******************************************************************************
2 *
3 * Copyright (C) 2003-2012 Broadcom Corporation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18
19 /******************************************************************************
20 *
21 * This file contains the GATT client utility function.
22 *
23 ******************************************************************************/
24
25 #include "bt_target.h"
26
27 #if defined(BTA_GATT_INCLUDED) && (BTA_GATT_INCLUDED == TRUE)
28
29 #include <string.h>
30 #include "utl.h"
31 #include "gki.h"
32 #include "bta_sys.h"
33 #include "bta_gatts_int.h"
34
35 static const UINT8 base_uuid[LEN_UUID_128] = {0xFB, 0x34, 0x9B, 0x5F, 0x80, 0x00, 0x00, 0x80,
36 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
37
38 /*******************************************************************************
39 **
40 ** Function bta_gatt_convert_uuid16_to_uuid128
41 **
42 ** Description Convert a 16 bits UUID to be an standard 128 bits one.
43 **
44 ** Returns TRUE if two uuid match; FALSE otherwise.
45 **
46 *******************************************************************************/
bta_gatt_convert_uuid16_to_uuid128(UINT8 uuid_128[LEN_UUID_128],UINT16 uuid_16)47 static void bta_gatt_convert_uuid16_to_uuid128(UINT8 uuid_128[LEN_UUID_128], UINT16 uuid_16)
48 {
49 UINT8 *p = &uuid_128[LEN_UUID_128 - 4];
50
51 memcpy (uuid_128, base_uuid, LEN_UUID_128);
52
53 UINT16_TO_STREAM(p, uuid_16);
54 }
55 /*******************************************************************************
56 **
57 ** Function bta_gatts_alloc_srvc_cb
58 **
59 ** Description allocate a service control block.
60 **
61 ** Returns pointer to the control block, or otherwise NULL when failed.
62 **
63 *******************************************************************************/
bta_gatts_alloc_srvc_cb(tBTA_GATTS_CB * p_cb,UINT8 rcb_idx)64 UINT8 bta_gatts_alloc_srvc_cb(tBTA_GATTS_CB *p_cb, UINT8 rcb_idx)
65 {
66 UINT8 i;
67
68 for (i = 0; i < BTA_GATTS_MAX_SRVC_NUM; i ++)
69 {
70 if (!p_cb->srvc_cb[i].in_use)
71 {
72 p_cb->srvc_cb[i].in_use = TRUE;
73 p_cb->srvc_cb[i].rcb_idx = rcb_idx;
74 return i;
75 }
76 }
77 return BTA_GATTS_INVALID_APP;
78 }
79
80 /*******************************************************************************
81 **
82 ** Function bta_gatts_find_app_rcb_by_app_if
83 **
84 ** Description find the index of the application control block by app ID.
85 **
86 ** Returns pointer to the control block if success, otherwise NULL
87 **
88 *******************************************************************************/
bta_gatts_find_app_rcb_by_app_if(tBTA_GATTS_IF server_if)89 tBTA_GATTS_RCB *bta_gatts_find_app_rcb_by_app_if(tBTA_GATTS_IF server_if)
90 {
91 UINT8 i;
92 tBTA_GATTS_RCB *p_reg;
93
94 for (i = 0, p_reg = bta_gatts_cb.rcb; i < BTA_GATTS_MAX_APP_NUM; i ++, p_reg++)
95 {
96 if (p_reg->in_use && p_reg->gatt_if == server_if)
97 return p_reg;
98 }
99 return NULL;
100 }
101
102 /*******************************************************************************
103 **
104 ** Function bta_gatts_find_app_rcb_idx_by_app_if
105 **
106 ** Description find the index of the application control block by app ID.
107 **
108 ** Returns index of the control block, or BTA_GATTS_INVALID_APP if failed.
109 **
110 *******************************************************************************/
111
bta_gatts_find_app_rcb_idx_by_app_if(tBTA_GATTS_CB * p_cb,tBTA_GATTS_IF server_if)112 UINT8 bta_gatts_find_app_rcb_idx_by_app_if(tBTA_GATTS_CB *p_cb, tBTA_GATTS_IF server_if)
113 {
114 UINT8 i;
115
116 for (i = 0; i < BTA_GATTS_MAX_APP_NUM; i ++)
117 {
118 if (p_cb->rcb[i].in_use && p_cb->rcb[i].gatt_if == server_if)
119 return i;
120 }
121 return BTA_GATTS_INVALID_APP;
122 }
123 /*******************************************************************************
124 **
125 ** Function bta_gatts_find_srvc_cb_by_srvc_id
126 **
127 ** Description find the service control block by service ID.
128 **
129 ** Returns pointer to the rcb.
130 **
131 *******************************************************************************/
bta_gatts_find_srvc_cb_by_srvc_id(tBTA_GATTS_CB * p_cb,UINT16 service_id)132 tBTA_GATTS_SRVC_CB * bta_gatts_find_srvc_cb_by_srvc_id(tBTA_GATTS_CB *p_cb, UINT16 service_id)
133 {
134 UINT8 i;
135 APPL_TRACE_DEBUG("bta_gatts_find_srvc_cb_by_srvc_id service_id=%d", service_id);
136 for (i = 0; i < BTA_GATTS_MAX_SRVC_NUM; i ++)
137 {
138 if (p_cb->srvc_cb[i].in_use &&
139 p_cb->srvc_cb[i].service_id == service_id)
140 {
141 APPL_TRACE_DEBUG("bta_gatts_find_srvc_cb_by_srvc_id found service cb index =%d", i);
142 return &p_cb->srvc_cb[i];
143 }
144 }
145 return NULL;
146 }
147 /*******************************************************************************
148 **
149 ** Function bta_gatts_find_srvc_cb_by_attr_id
150 **
151 ** Description find the service control block by attribute ID.
152 **
153 ** Returns pointer to the rcb.
154 **
155 *******************************************************************************/
bta_gatts_find_srvc_cb_by_attr_id(tBTA_GATTS_CB * p_cb,UINT16 attr_id)156 tBTA_GATTS_SRVC_CB * bta_gatts_find_srvc_cb_by_attr_id(tBTA_GATTS_CB *p_cb, UINT16 attr_id)
157 {
158 UINT8 i;
159
160 for (i = 0; i < (BTA_GATTS_MAX_SRVC_NUM); i ++)
161 {
162 if (/* middle service */
163 (i < (BTA_GATTS_MAX_SRVC_NUM - 1) &&
164 p_cb->srvc_cb[i].in_use &&
165 p_cb->srvc_cb[i + 1].in_use &&
166 attr_id >= p_cb->srvc_cb[i].service_id &&
167 attr_id < p_cb->srvc_cb[i + 1].service_id) ||
168 /* last active service */
169 (i < (BTA_GATTS_MAX_SRVC_NUM - 1) &&
170 p_cb->srvc_cb[i].in_use &&
171 !p_cb->srvc_cb[i + 1].in_use &&
172 attr_id >= p_cb->srvc_cb[i].service_id) ||
173 /* last service incb */
174 (i == (BTA_GATTS_MAX_SRVC_NUM - 1) &&
175 attr_id >= p_cb->srvc_cb[i].service_id)
176 )
177 {
178 return &p_cb->srvc_cb[i];
179 }
180 }
181 return NULL;
182 }
183 /*******************************************************************************
184 **
185 ** Function bta_gatts_uuid_compare
186 **
187 ** Description Compare two UUID to see if they are the same.
188 **
189 ** Returns TRUE if two uuid match; FALSE otherwise.
190 **
191 *******************************************************************************/
bta_gatts_uuid_compare(tBT_UUID tar,tBT_UUID src)192 BOOLEAN bta_gatts_uuid_compare(tBT_UUID tar, tBT_UUID src)
193 {
194 UINT8 su[LEN_UUID_128], tu[LEN_UUID_128];
195 UINT8 *ps, *pt;
196
197 /* any of the UUID is unspecified */
198 if (src.len == 0 || tar.len == 0)
199 {
200 return TRUE;
201 }
202
203 /* If both are 16-bit, we can do a simple compare */
204 if (src.len == 2 && tar.len == 2)
205 {
206 return src.uu.uuid16 == tar.uu.uuid16;
207 }
208
209 /* One or both of the UUIDs is 128-bit */
210 if (src.len == LEN_UUID_16)
211 {
212 /* convert a 16 bits UUID to 128 bits value */
213 bta_gatt_convert_uuid16_to_uuid128(su, src.uu.uuid16);
214 ps = su;
215 }
216 else
217 ps = src.uu.uuid128;
218
219 if (tar.len == LEN_UUID_16)
220 {
221 /* convert a 16 bits UUID to 128 bits value */
222 bta_gatt_convert_uuid16_to_uuid128(tu, tar.uu.uuid16);
223 pt = tu;
224 }
225 else
226 pt = tar.uu.uuid128;
227
228 return(memcmp(ps, pt, LEN_UUID_128) == 0);
229 }
230
231
232
233
234 #endif
235