1 /******************************************************************************
2 *
3 * Copyright 2010-2012 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 is the implementation of the API for GATT server of BTA.
22 *
23 ******************************************************************************/
24
25 #include <base/bind.h>
26 #include <base/location.h>
27 #include <cstdint>
28 #include <memory>
29 #include <vector>
30
31 #include "bt_target.h" // Must be first to define build configuration
32
33 #include "bta/gatt/bta_gatts_int.h"
34 #include "osi/include/allocator.h"
35 #include "stack/include/btu.h" // do_in_main_thread
36 #include "types/bluetooth/uuid.h"
37 #include "types/bt_transport.h"
38 #include "types/raw_address.h"
39
40 /*****************************************************************************
41 * Constants
42 ****************************************************************************/
43
44 static const tBTA_SYS_REG bta_gatts_reg = {bta_gatts_hdl_event,
45 BTA_GATTS_Disable};
46
47 /*******************************************************************************
48 *
49 * Function BTA_GATTS_Disable
50 *
51 * Description This function is called to disable GATTS module
52 *
53 * Parameters None.
54 *
55 * Returns None
56 *
57 ******************************************************************************/
BTA_GATTS_Disable(void)58 void BTA_GATTS_Disable(void) {
59 if (!bta_sys_is_register(BTA_ID_GATTS)) {
60 LOG(WARNING) << "GATTS Module not enabled/already disabled";
61 return;
62 }
63
64 BT_HDR_RIGID* p_buf = (BT_HDR_RIGID*)osi_malloc(sizeof(BT_HDR_RIGID));
65 p_buf->event = BTA_GATTS_API_DISABLE_EVT;
66 bta_sys_sendmsg(p_buf);
67 bta_sys_deregister(BTA_ID_GATTS);
68 }
69
70 /*******************************************************************************
71 *
72 * Function BTA_GATTS_AppRegister
73 *
74 * Description This function is called to register application callbacks
75 * with BTA GATTS module.
76 *
77 * Parameters p_app_uuid - applicaiton UUID
78 * p_cback - pointer to the application callback function.
79 *
80 * Returns None
81 *
82 ******************************************************************************/
BTA_GATTS_AppRegister(const bluetooth::Uuid & app_uuid,tBTA_GATTS_CBACK * p_cback,bool eatt_support)83 void BTA_GATTS_AppRegister(const bluetooth::Uuid& app_uuid,
84 tBTA_GATTS_CBACK* p_cback, bool eatt_support) {
85 tBTA_GATTS_API_REG* p_buf =
86 (tBTA_GATTS_API_REG*)osi_malloc(sizeof(tBTA_GATTS_API_REG));
87
88 /* register with BTA system manager */
89 if (!bta_sys_is_register(BTA_ID_GATTS))
90 bta_sys_register(BTA_ID_GATTS, &bta_gatts_reg);
91
92 p_buf->hdr.event = BTA_GATTS_API_REG_EVT;
93 p_buf->app_uuid = app_uuid;
94 p_buf->p_cback = p_cback;
95 p_buf->eatt_support = eatt_support;
96
97 bta_sys_sendmsg(p_buf);
98 }
99
100 /*******************************************************************************
101 *
102 * Function BTA_GATTS_AppDeregister
103 *
104 * Description De-register with GATT Server.
105 *
106 * Parameters app_id: applicatino ID.
107 *
108 * Returns void
109 *
110 ******************************************************************************/
BTA_GATTS_AppDeregister(tGATT_IF server_if)111 void BTA_GATTS_AppDeregister(tGATT_IF server_if) {
112 tBTA_GATTS_API_DEREG* p_buf =
113 (tBTA_GATTS_API_DEREG*)osi_malloc(sizeof(tBTA_GATTS_API_DEREG));
114
115 p_buf->hdr.event = BTA_GATTS_API_DEREG_EVT;
116 p_buf->server_if = server_if;
117
118 bta_sys_sendmsg(p_buf);
119 }
120
bta_gatts_add_service_impl(tGATT_IF server_if,std::vector<btgatt_db_element_t> service,BTA_GATTS_AddServiceCb cb)121 void bta_gatts_add_service_impl(tGATT_IF server_if,
122 std::vector<btgatt_db_element_t> service,
123 BTA_GATTS_AddServiceCb cb) {
124 uint8_t rcb_idx =
125 bta_gatts_find_app_rcb_idx_by_app_if(&bta_gatts_cb, server_if);
126
127 LOG(INFO) << __func__ << ": rcb_idx=" << +rcb_idx;
128
129 if (rcb_idx == BTA_GATTS_INVALID_APP) {
130 cb.Run(GATT_ERROR, server_if, std::move(service));
131 return;
132 }
133
134 uint8_t srvc_idx = bta_gatts_alloc_srvc_cb(&bta_gatts_cb, rcb_idx);
135 if (srvc_idx == BTA_GATTS_INVALID_APP) {
136 cb.Run(GATT_ERROR, server_if, std::move(service));
137 return;
138 }
139
140 tGATT_STATUS status =
141 GATTS_AddService(server_if, service.data(), service.size());
142 if (status != GATT_SERVICE_STARTED) {
143 memset(&bta_gatts_cb.srvc_cb[srvc_idx], 0, sizeof(tBTA_GATTS_SRVC_CB));
144 LOG(ERROR) << __func__ << ": service creation failed.";
145 cb.Run(GATT_ERROR, server_if, std::move(service));
146 return;
147 }
148
149 bta_gatts_cb.srvc_cb[srvc_idx].service_uuid = service[0].uuid;
150
151 // service_id is equal to service start handle
152 bta_gatts_cb.srvc_cb[srvc_idx].service_id = service[0].attribute_handle;
153 bta_gatts_cb.srvc_cb[srvc_idx].idx = srvc_idx;
154
155 cb.Run(GATT_SUCCESS, server_if, std::move(service));
156 return;
157 }
158
159 /*******************************************************************************
160 *
161 * Function BTA_GATTS_AddService
162 *
163 * Description Add the given |service| and all included elements to the
164 * GATT database. a |BTA_GATTS_ADD_SRVC_EVT| is triggered to
165 * report the status and attribute handles.
166 *
167 * Parameters server_if: server interface.
168 * service: pointer vector describing service.
169 *
170 * Returns Returns |GATT_SUCCESS| on success or |GATT_ERROR| if the
171 * service cannot be added.
172 *
173 ******************************************************************************/
BTA_GATTS_AddService(tGATT_IF server_if,std::vector<btgatt_db_element_t> service,BTA_GATTS_AddServiceCb cb)174 extern void BTA_GATTS_AddService(tGATT_IF server_if,
175 std::vector<btgatt_db_element_t> service,
176 BTA_GATTS_AddServiceCb cb) {
177 do_in_main_thread(FROM_HERE,
178 base::Bind(&bta_gatts_add_service_impl, server_if,
179 std::move(service), std::move(cb)));
180 }
181
182 /*******************************************************************************
183 *
184 * Function BTA_GATTS_DeleteService
185 *
186 * Description This function is called to delete a service. When this is
187 * done, a callback event BTA_GATTS_DELETE_EVT is report with
188 * the status.
189 *
190 * Parameters service_id: service_id to be deleted.
191 *
192 * Returns returns none.
193 *
194 ******************************************************************************/
BTA_GATTS_DeleteService(uint16_t service_id)195 void BTA_GATTS_DeleteService(uint16_t service_id) {
196 BT_HDR_RIGID* p_buf = (BT_HDR_RIGID*)osi_malloc(sizeof(BT_HDR_RIGID));
197
198 p_buf->event = BTA_GATTS_API_DEL_SRVC_EVT;
199 p_buf->layer_specific = service_id;
200
201 bta_sys_sendmsg(p_buf);
202 }
203
204 /*******************************************************************************
205 *
206 * Function BTA_GATTS_StopService
207 *
208 * Description This function is called to stop a service.
209 *
210 * Parameters service_id - service to be topped.
211 *
212 * Returns None
213 *
214 ******************************************************************************/
BTA_GATTS_StopService(uint16_t service_id)215 void BTA_GATTS_StopService(uint16_t service_id) {
216 BT_HDR_RIGID* p_buf = (BT_HDR_RIGID*)osi_malloc(sizeof(BT_HDR_RIGID));
217
218 p_buf->event = BTA_GATTS_API_STOP_SRVC_EVT;
219 p_buf->layer_specific = service_id;
220
221 bta_sys_sendmsg(p_buf);
222 }
223
224 /*******************************************************************************
225 *
226 * Function BTA_GATTS_HandleValueIndication
227 *
228 * Description This function is called to read a characteristics
229 * descriptor.
230 *
231 * Parameters bda - remote device bd address to indicate.
232 * attr_id - attribute ID to indicate.
233 * value - data to indicate.
234 * need_confirm - if this indication expects a confirmation or
235 * not.
236 *
237 * Returns None
238 *
239 ******************************************************************************/
BTA_GATTS_HandleValueIndication(uint16_t conn_id,uint16_t attr_id,std::vector<uint8_t> value,bool need_confirm)240 void BTA_GATTS_HandleValueIndication(uint16_t conn_id, uint16_t attr_id,
241 std::vector<uint8_t> value,
242 bool need_confirm) {
243 tBTA_GATTS_API_INDICATION* p_buf =
244 (tBTA_GATTS_API_INDICATION*)osi_calloc(sizeof(tBTA_GATTS_API_INDICATION));
245
246 p_buf->hdr.event = BTA_GATTS_API_INDICATION_EVT;
247 p_buf->hdr.layer_specific = conn_id;
248 p_buf->attr_id = attr_id;
249 p_buf->need_confirm = need_confirm;
250 if (value.size() > 0) {
251 p_buf->len = value.size();
252 memcpy(p_buf->value, value.data(), value.size());
253 }
254
255 bta_sys_sendmsg(p_buf);
256 }
257
258 /*******************************************************************************
259 *
260 * Function BTA_GATTS_SendRsp
261 *
262 * Description This function is called to send a response to a request.
263 *
264 * Parameters conn_id - connection identifier.
265 * trans_id - transaction ID.
266 * status - response status
267 * p_msg - response data.
268 *
269 * Returns None
270 *
271 ******************************************************************************/
BTA_GATTS_SendRsp(uint16_t conn_id,uint32_t trans_id,tGATT_STATUS status,tGATTS_RSP * p_msg)272 void BTA_GATTS_SendRsp(uint16_t conn_id, uint32_t trans_id, tGATT_STATUS status,
273 tGATTS_RSP* p_msg) {
274 const size_t len = sizeof(tBTA_GATTS_API_RSP) + sizeof(tGATTS_RSP);
275 tBTA_GATTS_API_RSP* p_buf = (tBTA_GATTS_API_RSP*)osi_calloc(len);
276
277 p_buf->hdr.event = BTA_GATTS_API_RSP_EVT;
278 p_buf->hdr.layer_specific = conn_id;
279 p_buf->trans_id = trans_id;
280 p_buf->status = status;
281 if (p_msg != NULL) {
282 p_buf->p_rsp = (tGATTS_RSP*)(p_buf + 1);
283 memcpy(p_buf->p_rsp, p_msg, sizeof(tGATTS_RSP));
284 }
285
286 bta_sys_sendmsg(p_buf);
287 }
288
289 /*******************************************************************************
290 *
291 * Function BTA_GATTS_Open
292 *
293 * Description Open a direct open connection or add a background auto
294 * connection bd address
295 *
296 * Parameters server_if: server interface.
297 * remote_bda: remote device BD address.
298 * is_direct: direct connection or background auto connection
299 * transport : Transport on which GATT connection to be opened
300 * (BR/EDR or LE)
301 *
302 * Returns void
303 *
304 ******************************************************************************/
BTA_GATTS_Open(tGATT_IF server_if,const RawAddress & remote_bda,bool is_direct,tBT_TRANSPORT transport)305 void BTA_GATTS_Open(tGATT_IF server_if, const RawAddress& remote_bda,
306 bool is_direct, tBT_TRANSPORT transport) {
307 tBTA_GATTS_API_OPEN* p_buf =
308 (tBTA_GATTS_API_OPEN*)osi_malloc(sizeof(tBTA_GATTS_API_OPEN));
309
310 p_buf->hdr.event = BTA_GATTS_API_OPEN_EVT;
311 p_buf->server_if = server_if;
312 p_buf->is_direct = is_direct;
313 p_buf->transport = transport;
314 p_buf->remote_bda = remote_bda;
315
316 bta_sys_sendmsg(p_buf);
317 }
318
319 /*******************************************************************************
320 *
321 * Function BTA_GATTS_CancelOpen
322 *
323 * Description Cancel a direct open connection or remove a background auto
324 * connection bd address
325 *
326 * Parameters server_if: server interface.
327 * remote_bda: remote device BD address.
328 * is_direct: direct connection or background auto connection
329 *
330 * Returns void
331 *
332 ******************************************************************************/
BTA_GATTS_CancelOpen(tGATT_IF server_if,const RawAddress & remote_bda,bool is_direct)333 void BTA_GATTS_CancelOpen(tGATT_IF server_if, const RawAddress& remote_bda,
334 bool is_direct) {
335 tBTA_GATTS_API_CANCEL_OPEN* p_buf = (tBTA_GATTS_API_CANCEL_OPEN*)osi_malloc(
336 sizeof(tBTA_GATTS_API_CANCEL_OPEN));
337
338 p_buf->hdr.event = BTA_GATTS_API_CANCEL_OPEN_EVT;
339 p_buf->server_if = server_if;
340 p_buf->is_direct = is_direct;
341 p_buf->remote_bda = remote_bda;
342
343 bta_sys_sendmsg(p_buf);
344 }
345
346 /*******************************************************************************
347 *
348 * Function BTA_GATTS_Close
349 *
350 * Description Close a connection a remote device.
351 *
352 * Parameters conn_id: connectino ID to be closed.
353 *
354 * Returns void
355 *
356 ******************************************************************************/
BTA_GATTS_Close(uint16_t conn_id)357 void BTA_GATTS_Close(uint16_t conn_id) {
358 BT_HDR_RIGID* p_buf = (BT_HDR_RIGID*)osi_malloc(sizeof(BT_HDR_RIGID));
359
360 p_buf->event = BTA_GATTS_API_CLOSE_EVT;
361 p_buf->layer_specific = conn_id;
362
363 bta_sys_sendmsg(p_buf);
364 }
365