1 /******************************************************************************
2 *
3 * Copyright (C) 2009-2013 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 #include <hardware/bluetooth.h>
20 #include <hardware/bt_gatt.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <errno.h>
24 #include <string.h>
25
26 #define LOG_TAG "bt_btif_gatt"
27
28 #include "btcore/include/bdaddr.h"
29 #include "bta_api.h"
30 #include "bta_gatt_api.h"
31 #include "bta_jv_api.h"
32 #include "btif_storage.h"
33 #include "btif_config.h"
34
35 #include "btif_common.h"
36 #include "btif_dm.h"
37 #include "btif_util.h"
38 #include "btif_gatt.h"
39 #include "btif_gatt_util.h"
40 #include "gki.h"
41
42 #if BTA_GATT_INCLUDED == TRUE
43
44 #define GATTC_READ_VALUE_TYPE_VALUE 0x0000 /* Attribute value itself */
45 #define GATTC_READ_VALUE_TYPE_AGG_FORMAT 0x2905 /* Characteristic Aggregate Format*/
46
47 static unsigned char BASE_UUID[16] = {
48 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80,
49 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
50 };
51
uuidType(unsigned char * p_uuid)52 int uuidType(unsigned char* p_uuid)
53 {
54 int i = 0;
55 int match = 0;
56 int all_zero = 1;
57
58 for(i = 0; i != 16; ++i)
59 {
60 if (i == 12 || i == 13)
61 continue;
62
63 if (p_uuid[i] == BASE_UUID[i])
64 ++match;
65
66 if (p_uuid[i] != 0)
67 all_zero = 0;
68 }
69 if (all_zero)
70 return 0;
71 if (match == 12)
72 return LEN_UUID_32;
73 if (match == 14)
74 return LEN_UUID_16;
75 return LEN_UUID_128;
76 }
77
78 /*******************************************************************************
79 * BTIF -> BTA conversion functions
80 *******************************************************************************/
81
btif_to_bta_uuid(tBT_UUID * p_dest,bt_uuid_t * p_src)82 void btif_to_bta_uuid(tBT_UUID *p_dest, bt_uuid_t *p_src)
83 {
84 char *p_byte = (char*)p_src;
85 int i = 0;
86
87 p_dest->len = uuidType(p_src->uu);
88
89 switch (p_dest->len)
90 {
91 case LEN_UUID_16:
92 p_dest->uu.uuid16 = (p_src->uu[13] << 8) + p_src->uu[12];
93 break;
94
95 case LEN_UUID_32:
96 p_dest->uu.uuid32 = (p_src->uu[13] << 8) + p_src->uu[12];
97 p_dest->uu.uuid32 += (p_src->uu[15] << 24) + (p_src->uu[14] << 16);
98 break;
99
100 case LEN_UUID_128:
101 for(i = 0; i != 16; ++i)
102 p_dest->uu.uuid128[i] = p_byte[i];
103 break;
104
105 default:
106 LOG_ERROR("%s: Unknown UUID length %d!", __FUNCTION__, p_dest->len);
107 break;
108 }
109 }
110
btif_to_bta_gatt_id(tBTA_GATT_ID * p_dest,btgatt_gatt_id_t * p_src)111 void btif_to_bta_gatt_id(tBTA_GATT_ID *p_dest, btgatt_gatt_id_t *p_src)
112 {
113 p_dest->inst_id = p_src->inst_id;
114 btif_to_bta_uuid(&p_dest->uuid, &p_src->uuid);
115 }
116
btif_to_bta_srvc_id(tBTA_GATT_SRVC_ID * p_dest,btgatt_srvc_id_t * p_src)117 void btif_to_bta_srvc_id(tBTA_GATT_SRVC_ID *p_dest, btgatt_srvc_id_t *p_src)
118 {
119 p_dest->id.inst_id = p_src->id.inst_id;
120 btif_to_bta_uuid(&p_dest->id.uuid, &p_src->id.uuid);
121 p_dest->is_primary = p_src->is_primary;
122 }
123
btif_to_bta_response(tBTA_GATTS_RSP * p_dest,btgatt_response_t * p_src)124 void btif_to_bta_response(tBTA_GATTS_RSP *p_dest, btgatt_response_t* p_src)
125 {
126 p_dest->attr_value.auth_req = p_src->attr_value.auth_req;
127 p_dest->attr_value.handle = p_src->attr_value.handle;
128 p_dest->attr_value.len = p_src->attr_value.len;
129 p_dest->attr_value.offset = p_src->attr_value.offset;
130 memcpy(p_dest->attr_value.value, p_src->attr_value.value, GATT_MAX_ATTR_LEN);
131 }
132
btif_to_bta_uuid_mask(tBTA_DM_BLE_PF_COND_MASK * p_mask,bt_uuid_t * p_src)133 void btif_to_bta_uuid_mask(tBTA_DM_BLE_PF_COND_MASK *p_mask, bt_uuid_t *p_src)
134 {
135 char *p_byte = (char*)p_src;
136 int i = 0;
137
138 switch (uuidType(p_src->uu))
139 {
140 case LEN_UUID_16:
141 p_mask->uuid16_mask = (p_src->uu[13] << 8) + p_src->uu[12];
142 break;
143
144 case LEN_UUID_32:
145 p_mask->uuid32_mask = (p_src->uu[13] << 8) + p_src->uu[12];
146 p_mask->uuid32_mask += (p_src->uu[15] << 24) + (p_src->uu[14] << 16);
147 break;
148
149 case LEN_UUID_128:
150 for(i = 0; i != 16; ++i)
151 p_mask->uuid128_mask[i] = p_byte[i];
152 break;
153
154 default:
155 break;
156 }
157 }
158
159 /*******************************************************************************
160 * BTA -> BTIF conversion functions
161 *******************************************************************************/
162
bta_to_btif_uuid(bt_uuid_t * p_dest,tBT_UUID * p_src)163 void bta_to_btif_uuid(bt_uuid_t *p_dest, tBT_UUID *p_src)
164 {
165 int i = 0;
166
167 if (p_src->len == LEN_UUID_16 || p_src->len == LEN_UUID_32)
168 {
169 for(i=0; i != 16; ++i)
170 p_dest->uu[i] = BASE_UUID[i];
171 }
172
173 switch (p_src->len)
174 {
175 case 0:
176 break;
177
178 case LEN_UUID_16:
179 p_dest->uu[12] = p_src->uu.uuid16 & 0xff;
180 p_dest->uu[13] = (p_src->uu.uuid16 >> 8) & 0xff;
181 break;
182
183 case LEN_UUID_32:
184 p_dest->uu[12] = p_src->uu.uuid16 & 0xff;
185 p_dest->uu[13] = (p_src->uu.uuid16 >> 8) & 0xff;
186 p_dest->uu[14] = (p_src->uu.uuid32 >> 16) & 0xff;
187 p_dest->uu[15] = (p_src->uu.uuid32 >> 24) & 0xff;
188 break;
189
190 case LEN_UUID_128:
191 for(i=0; i != 16; ++i)
192 p_dest->uu[i] = p_src->uu.uuid128[i];
193 break;
194
195 default:
196 LOG_ERROR("%s: Unknown UUID length %d!", __FUNCTION__, p_src->len);
197 break;
198 }
199 }
200
201
bta_to_btif_gatt_id(btgatt_gatt_id_t * p_dest,tBTA_GATT_ID * p_src)202 void bta_to_btif_gatt_id(btgatt_gatt_id_t *p_dest, tBTA_GATT_ID *p_src)
203 {
204 p_dest->inst_id = p_src->inst_id;
205 bta_to_btif_uuid(&p_dest->uuid, &p_src->uuid);
206 }
207
bta_to_btif_srvc_id(btgatt_srvc_id_t * p_dest,tBTA_GATT_SRVC_ID * p_src)208 void bta_to_btif_srvc_id(btgatt_srvc_id_t *p_dest, tBTA_GATT_SRVC_ID *p_src)
209 {
210 p_dest->id.inst_id = p_src->id.inst_id;
211 bta_to_btif_uuid(&p_dest->id.uuid, &p_src->id.uuid);
212 p_dest->is_primary = p_src->is_primary;
213 }
214
215
216 /*******************************************************************************
217 * Utility functions
218 *******************************************************************************/
219
get_uuid16(tBT_UUID * p_uuid)220 uint16_t get_uuid16(tBT_UUID *p_uuid)
221 {
222 if (p_uuid->len == LEN_UUID_16)
223 {
224 return p_uuid->uu.uuid16;
225 }
226 else if (p_uuid->len == LEN_UUID_128)
227 {
228 UINT16 u16;
229 UINT8 *p = &p_uuid->uu.uuid128[LEN_UUID_128 - 4];
230 STREAM_TO_UINT16(u16, p);
231 return u16;
232 }
233 else /* p_uuid->len == LEN_UUID_32 */
234 {
235 return(UINT16) p_uuid->uu.uuid32;
236 }
237 }
238
set_read_value(btgatt_read_params_t * p_dest,tBTA_GATTC_READ * p_src)239 uint16_t set_read_value(btgatt_read_params_t *p_dest, tBTA_GATTC_READ *p_src)
240 {
241 uint16_t descr_type = 0;
242 uint16_t len = 0;
243
244 p_dest->status = p_src->status;
245 bta_to_btif_srvc_id(&p_dest->srvc_id, &p_src->srvc_id);
246 bta_to_btif_gatt_id(&p_dest->char_id, &p_src->char_id);
247 bta_to_btif_gatt_id(&p_dest->descr_id, &p_src->descr_type);
248
249 descr_type = get_uuid16(&p_src->descr_type.uuid);
250
251 switch (descr_type)
252 {
253 case GATT_UUID_CHAR_AGG_FORMAT:
254 /* not supported */
255 p_dest->value_type = GATTC_READ_VALUE_TYPE_AGG_FORMAT;
256 break;
257
258 default:
259 if (( p_src->status == BTA_GATT_OK ) &&(p_src->p_value != NULL))
260 {
261 LOG_INFO("%s unformat.len = %d ", __FUNCTION__, p_src->p_value->unformat.len);
262 p_dest->value.len = p_src->p_value->unformat.len;
263 if ( p_src->p_value->unformat.len > 0 && p_src->p_value->unformat.p_value != NULL )
264 {
265 memcpy(p_dest->value.value, p_src->p_value->unformat.p_value,
266 p_src->p_value->unformat.len);
267 }
268 len += p_src->p_value->unformat.len;
269 }
270 else
271 {
272 p_dest->value.len = 0;
273 }
274
275 p_dest->value_type = GATTC_READ_VALUE_TYPE_VALUE;
276 break;
277 }
278
279 return len;
280 }
281
282 /*******************************************************************************
283 * Encrypted link map handling
284 *******************************************************************************/
285
286 static void btif_gatt_set_encryption_cb (BD_ADDR bd_addr, tBTA_TRANSPORT transport, tBTA_STATUS result);
287
btif_gatt_is_link_encrypted(BD_ADDR bd_addr)288 static BOOLEAN btif_gatt_is_link_encrypted (BD_ADDR bd_addr)
289 {
290 if (bd_addr == NULL)
291 return FALSE;
292
293 return BTA_JvIsEncrypted(bd_addr);
294 }
295
btif_gatt_set_encryption_cb(BD_ADDR bd_addr,tBTA_TRANSPORT transport,tBTA_STATUS result)296 static void btif_gatt_set_encryption_cb (BD_ADDR bd_addr, tBTA_TRANSPORT transport, tBTA_STATUS result)
297 {
298 UNUSED(bd_addr);
299 UNUSED(transport);
300
301 if (result != BTA_SUCCESS && result != BTA_BUSY)
302 {
303 BTIF_TRACE_WARNING("%s() - Encryption failed (%d)", __FUNCTION__, result);
304 }
305 }
306
btif_gatt_check_encrypted_link(BD_ADDR bd_addr,tBTA_GATT_TRANSPORT transport_link)307 void btif_gatt_check_encrypted_link (BD_ADDR bd_addr, tBTA_GATT_TRANSPORT transport_link)
308 {
309 char buf[100];
310
311 bt_bdaddr_t bda;
312 bdcpy(bda.address, bd_addr);
313
314 #if (!defined(BLE_DELAY_REQUEST_ENC) || (BLE_DELAY_REQUEST_ENC == FALSE))
315 if ((btif_storage_get_ble_bonding_key(&bda, BTIF_DM_LE_KEY_PENC,
316 buf, sizeof(tBTM_LE_PENC_KEYS)) == BT_STATUS_SUCCESS)
317 && !btif_gatt_is_link_encrypted(bd_addr))
318 {
319 BTIF_TRACE_DEBUG ("%s: transport = %d", __func__, transport_link);
320 BTA_DmSetEncryption(bd_addr,transport_link,
321 &btif_gatt_set_encryption_cb, BTM_BLE_SEC_ENCRYPT);
322 }
323 #endif
324 }
325
326 #endif
327
btif_gatt_move_track_adv_data(btgatt_track_adv_info_t * p_dest,btgatt_track_adv_info_t * p_src)328 void btif_gatt_move_track_adv_data(btgatt_track_adv_info_t *p_dest,
329 btgatt_track_adv_info_t *p_src)
330 {
331 memset(p_dest, 0, sizeof(btgatt_track_adv_info_t));
332
333 memcpy(p_dest, p_src, sizeof(btgatt_track_adv_info_t));
334
335 if (p_src->adv_pkt_len > 0)
336 {
337 p_dest->p_adv_pkt_data = GKI_getbuf(p_src->adv_pkt_len);
338 memcpy(p_dest->p_adv_pkt_data, p_src->p_adv_pkt_data,
339 p_src->adv_pkt_len);
340 GKI_freebuf(p_src->p_adv_pkt_data);
341 }
342
343 if (p_src->scan_rsp_len > 0)
344 {
345 p_dest->p_scan_rsp_data = GKI_getbuf(p_src->scan_rsp_len);
346 memcpy(p_dest->p_scan_rsp_data, p_src->p_scan_rsp_data,
347 p_src->scan_rsp_len);
348 GKI_freebuf(p_src->p_scan_rsp_data);
349 }
350 }
351
352