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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 #include "bt_target.h"
19 
20 #if (defined BLE_INCLUDED && BLE_INCLUDED == TRUE)
21 
22 #include "bt_utils.h"
23 #include <string.h>
24 #include "gap_int.h"
25 #include "gap_api.h"
26 #include "gattdefs.h"
27 #include "gatt_api.h"
28 #include "gatt_int.h"
29 #include "btm_int.h"
30 #include "hcimsgs.h"
31 
32 #define GAP_CHAR_ICON_SIZE          2
33 #define GAP_CHAR_DEV_NAME_SIZE      248
34 #define GAP_MAX_NUM_INC_SVR       0
35 #define GAP_MAX_ATTR_NUM          (2 * GAP_MAX_CHAR_NUM + GAP_MAX_NUM_INC_SVR + 1)
36 #define GAP_MAX_CHAR_VALUE_SIZE   (30 + GAP_CHAR_DEV_NAME_SIZE)
37 
38 
39 #ifndef GAP_ATTR_DB_SIZE
40 #define GAP_ATTR_DB_SIZE      GATT_DB_MEM_SIZE(GAP_MAX_NUM_INC_SVR, GAP_MAX_CHAR_NUM, GAP_MAX_CHAR_VALUE_SIZE)
41 #endif
42 
43 static void gap_ble_s_attr_request_cback (UINT16 conn_id, UINT32 trans_id, tGATTS_REQ_TYPE op_code, tGATTS_DATA *p_data);
44 
45 /* client connection callback */
46 static void  gap_ble_c_connect_cback (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id, BOOLEAN connected,
47                                             tGATT_DISCONN_REASON reason, tGATT_TRANSPORT transport);
48 static void  gap_ble_c_cmpl_cback (UINT16 conn_id, tGATTC_OPTYPE op, tGATT_STATUS status, tGATT_CL_COMPLETE *p_data);
49 
50 static tGATT_CBACK gap_cback =
51 {
52     gap_ble_c_connect_cback,
53     gap_ble_c_cmpl_cback,
54     NULL,
55     NULL,
56     gap_ble_s_attr_request_cback,
57     NULL,
58     NULL
59 };
60 
61 
62 
63 /*******************************************************************************
64 **
65 ** Function         gap_find_clcb_by_bd_addr
66 **
67 ** Description      The function searches all LCB with macthing bd address
68 **
69 ** Returns          total number of clcb found.
70 **
71 *******************************************************************************/
gap_find_clcb_by_bd_addr(BD_ADDR bda)72 tGAP_CLCB *gap_find_clcb_by_bd_addr(BD_ADDR bda)
73 {
74     UINT8 i_clcb;
75     tGAP_CLCB    *p_clcb = NULL;
76 
77     for (i_clcb = 0, p_clcb= gap_cb.clcb; i_clcb < GAP_MAX_CL; i_clcb++, p_clcb++)
78     {
79         if (p_clcb->in_use && !memcmp(p_clcb->bda, bda, BD_ADDR_LEN))
80         {
81             return p_clcb;
82         }
83     }
84 
85     return NULL;
86 }
87 
88 /*******************************************************************************
89 **
90 ** Function         gap_ble_find_clcb_by_conn_id
91 **
92 ** Description      The function searches all LCB with macthing connection ID
93 **
94 ** Returns          total number of clcb found.
95 **
96 *******************************************************************************/
gap_ble_find_clcb_by_conn_id(UINT16 conn_id)97 tGAP_CLCB *gap_ble_find_clcb_by_conn_id(UINT16 conn_id)
98 {
99     UINT8 i_clcb;
100     tGAP_CLCB    *p_clcb = NULL;
101 
102     for (i_clcb = 0, p_clcb= gap_cb.clcb; i_clcb < GAP_MAX_CL; i_clcb++, p_clcb++)
103     {
104         if (p_clcb->in_use && p_clcb->connected && p_clcb->conn_id == conn_id)
105         {
106             return p_clcb;
107         }
108     }
109 
110     return p_clcb;
111 }
112 
113 /*******************************************************************************
114 **
115 ** Function         gap_clcb_alloc
116 **
117 ** Description      The function allocates a GAP  connection link control block
118 **
119 ** Returns           NULL if not found. Otherwise pointer to the connection link block.
120 **
121 *******************************************************************************/
gap_clcb_alloc(BD_ADDR bda)122 tGAP_CLCB *gap_clcb_alloc (BD_ADDR bda)
123 {
124     UINT8         i_clcb = 0;
125     tGAP_CLCB    *p_clcb = NULL;
126 
127     for (i_clcb = 0, p_clcb= gap_cb.clcb; i_clcb < GAP_MAX_CL; i_clcb++, p_clcb++)
128     {
129         if (!p_clcb->in_use)
130         {
131             fixed_queue_free(p_clcb->pending_req_q, NULL);
132             memset(p_clcb, 0, sizeof(tGAP_CLCB));
133             p_clcb->in_use = TRUE;
134             memcpy (p_clcb->bda, bda, BD_ADDR_LEN);
135             p_clcb->pending_req_q = fixed_queue_new(SIZE_MAX);
136             break;
137         }
138     }
139     return p_clcb;
140 }
141 
142 /*******************************************************************************
143 **
144 ** Function         gap_ble_dealloc_clcb
145 **
146 ** Description      The function clean up the pending request queue in GAP
147 **
148 ** Returns          none
149 **
150 *******************************************************************************/
gap_ble_dealloc_clcb(tGAP_CLCB * p_clcb)151 void gap_ble_dealloc_clcb(tGAP_CLCB *p_clcb)
152 {
153     tGAP_BLE_REQ    *p_q;
154 
155     while ((p_q = (tGAP_BLE_REQ *)fixed_queue_try_dequeue(p_clcb->pending_req_q)) != NULL)
156     {
157          /* send callback to all pending requests if being removed*/
158          if (p_q->p_cback != NULL)
159             (*p_q->p_cback)(FALSE, p_clcb->bda, 0, NULL);
160 
161          osi_free(p_q);
162     }
163     fixed_queue_free(p_clcb->pending_req_q, NULL);
164 
165     memset(p_clcb, 0, sizeof(tGAP_CLCB));
166 }
167 
168 /*******************************************************************************
169 **
170 ** Function         gap_ble_enqueue_request
171 **
172 ** Description      The function enqueue a GAP client request
173 **
174 ** Returns           TRUE is successul; FALSE otherwise
175 **
176 *******************************************************************************/
gap_ble_enqueue_request(tGAP_CLCB * p_clcb,UINT16 uuid,tGAP_BLE_CMPL_CBACK * p_cback)177 BOOLEAN gap_ble_enqueue_request (tGAP_CLCB *p_clcb, UINT16 uuid, tGAP_BLE_CMPL_CBACK *p_cback)
178 {
179     tGAP_BLE_REQ *p_q = (tGAP_BLE_REQ *)osi_malloc(sizeof(tGAP_BLE_REQ));
180 
181     p_q->p_cback = p_cback;
182     p_q->uuid = uuid;
183     fixed_queue_enqueue(p_clcb->pending_req_q, p_q);
184 
185     return TRUE;
186 }
187 
188 /*******************************************************************************
189 **
190 ** Function         gap_ble_dequeue_request
191 **
192 ** Description      The function dequeue a GAP client request if any
193 **
194 ** Returns           TRUE is successul; FALSE otherwise
195 **
196 *******************************************************************************/
gap_ble_dequeue_request(tGAP_CLCB * p_clcb,UINT16 * p_uuid,tGAP_BLE_CMPL_CBACK ** p_cback)197 BOOLEAN gap_ble_dequeue_request (tGAP_CLCB *p_clcb, UINT16 * p_uuid, tGAP_BLE_CMPL_CBACK **p_cback)
198 {
199     tGAP_BLE_REQ *p_q = (tGAP_BLE_REQ *)fixed_queue_try_dequeue(p_clcb->pending_req_q);;
200 
201     if (p_q != NULL)
202     {
203         *p_cback    = p_q->p_cback;
204         *p_uuid     = p_q->uuid;
205         osi_free(p_q);
206         return TRUE;
207     }
208 
209     return FALSE;
210 }
211 
212 /*******************************************************************************
213 **   GAP Attributes Database Request callback
214 *******************************************************************************/
gap_read_attr_value(UINT16 handle,tGATT_VALUE * p_value,BOOLEAN is_long)215 tGATT_STATUS gap_read_attr_value (UINT16 handle, tGATT_VALUE *p_value, BOOLEAN is_long)
216 {
217     tGAP_ATTR   *p_db_attr = gap_cb.gatt_attr;
218     UINT8       *p = p_value->value, i;
219     UINT16      offset = p_value->offset;
220     UINT8       *p_dev_name = NULL;
221 
222     for (i = 0; i < GAP_MAX_CHAR_NUM; i ++, p_db_attr ++)
223     {
224         if (handle == p_db_attr->handle)
225         {
226             if (p_db_attr->uuid != GATT_UUID_GAP_DEVICE_NAME &&
227                 is_long == TRUE)
228                 return GATT_NOT_LONG;
229 
230             switch (p_db_attr->uuid)
231             {
232                 case GATT_UUID_GAP_DEVICE_NAME:
233                     BTM_ReadLocalDeviceName((char **)&p_dev_name);
234                     if (strlen ((char *)p_dev_name) > GATT_MAX_ATTR_LEN)
235                         p_value->len = GATT_MAX_ATTR_LEN;
236                     else
237                         p_value->len = (UINT16)strlen ((char *)p_dev_name);
238 
239                     if (offset > p_value->len)
240                         return GATT_INVALID_OFFSET;
241                     else
242                     {
243                         p_value->len -= offset;
244                         p_dev_name += offset;
245                         ARRAY_TO_STREAM(p, p_dev_name, p_value->len);
246                         GAP_TRACE_EVENT("GATT_UUID_GAP_DEVICE_NAME len=0x%04x", p_value->len);
247                     }
248                     break;
249 
250                 case GATT_UUID_GAP_ICON:
251                     UINT16_TO_STREAM(p, p_db_attr->attr_value.icon);
252                     p_value->len = 2;
253                     break;
254 
255                 case GATT_UUID_GAP_PREF_CONN_PARAM:
256                     UINT16_TO_STREAM(p, p_db_attr->attr_value.conn_param.int_min); /* int_min */
257                     UINT16_TO_STREAM(p, p_db_attr->attr_value.conn_param.int_max); /* int_max */
258                     UINT16_TO_STREAM(p, p_db_attr->attr_value.conn_param.latency); /* latency */
259                     UINT16_TO_STREAM(p, p_db_attr->attr_value.conn_param.sp_tout);  /* sp_tout */
260                     p_value->len =8;
261                     break;
262 
263                 /* address resolution */
264                 case GATT_UUID_GAP_CENTRAL_ADDR_RESOL:
265                     UINT8_TO_STREAM(p, p_db_attr->attr_value.addr_resolution);
266                     p_value->len =1;
267                     break;
268             }
269             return GATT_SUCCESS;
270         }
271     }
272     return GATT_NOT_FOUND;
273 }
274 
275 /*******************************************************************************
276 **   GAP Attributes Database Read/Read Blob Request process
277 *******************************************************************************/
gap_proc_read(tGATTS_REQ_TYPE type,tGATT_READ_REQ * p_data,tGATTS_RSP * p_rsp)278 tGATT_STATUS gap_proc_read (tGATTS_REQ_TYPE type, tGATT_READ_REQ *p_data, tGATTS_RSP *p_rsp)
279 {
280     tGATT_STATUS    status = GATT_NO_RESOURCES;
281     UNUSED(type);
282 
283     if (p_data->is_long)
284         p_rsp->attr_value.offset = p_data->offset;
285 
286     p_rsp->attr_value.handle = p_data->handle;
287 
288     status = gap_read_attr_value(p_data->handle, &p_rsp->attr_value, p_data->is_long);
289 
290     return status;
291 }
292 
293 /******************************************************************************
294 **
295 ** Function         gap_proc_write_req
296 **
297 ** Description      GAP ATT server process a write request.
298 **
299 ** Returns          void.
300 **
301 *******************************************************************************/
gap_proc_write_req(tGATTS_REQ_TYPE type,tGATT_WRITE_REQ * p_data)302 UINT8 gap_proc_write_req( tGATTS_REQ_TYPE type, tGATT_WRITE_REQ *p_data)
303 {
304     tGAP_ATTR   *p_db_attr = gap_cb.gatt_attr;
305     UINT8   i;
306     UNUSED(type);
307 
308     for (i = 0; i < GAP_MAX_CHAR_NUM; i ++, p_db_attr ++)
309     {
310         if (p_data-> handle == p_db_attr->handle)
311         {
312                 return GATT_WRITE_NOT_PERMIT;
313         }
314     }
315     return GATT_NOT_FOUND;
316 
317 }
318 
319 /******************************************************************************
320 **
321 ** Function         gap_ble_s_attr_request_cback
322 **
323 ** Description      GAP ATT server attribute access request callback.
324 **
325 ** Returns          void.
326 **
327 *******************************************************************************/
gap_ble_s_attr_request_cback(UINT16 conn_id,UINT32 trans_id,tGATTS_REQ_TYPE type,tGATTS_DATA * p_data)328 void gap_ble_s_attr_request_cback (UINT16 conn_id, UINT32 trans_id,
329                                    tGATTS_REQ_TYPE type, tGATTS_DATA *p_data)
330 {
331     UINT8       status = GATT_INVALID_PDU;
332     tGATTS_RSP  rsp_msg;
333     BOOLEAN     ignore = FALSE;
334 
335     GAP_TRACE_EVENT("gap_ble_s_attr_request_cback : recv type (0x%02x)", type);
336 
337     memset(&rsp_msg, 0, sizeof(tGATTS_RSP));
338 
339     switch (type)
340     {
341         case GATTS_REQ_TYPE_READ:
342             status = gap_proc_read(type, &p_data->read_req, &rsp_msg);
343             break;
344 
345         case GATTS_REQ_TYPE_WRITE:
346             if (!p_data->write_req.need_rsp)
347                 ignore = TRUE;
348 
349             status = gap_proc_write_req(type, &p_data->write_req);
350             break;
351 
352         case GATTS_REQ_TYPE_WRITE_EXEC:
353             ignore = TRUE;
354             GAP_TRACE_EVENT("Ignore GATTS_REQ_TYPE_WRITE_EXEC"  );
355             break;
356 
357         case GATTS_REQ_TYPE_MTU:
358             GAP_TRACE_EVENT("Get MTU exchange new mtu size: %d", p_data->mtu);
359             ignore = TRUE;
360             break;
361 
362         default:
363             GAP_TRACE_EVENT("Unknown/unexpected LE GAP ATT request: 0x%02x", type);
364             break;
365     }
366 
367     if (!ignore)
368         GATTS_SendRsp (conn_id, trans_id, status, &rsp_msg);
369 }
370 
371 /*******************************************************************************
372 **
373 ** Function         btm_ble_att_db_init
374 **
375 ** Description      GAP ATT database initalization.
376 **
377 ** Returns          void.
378 **
379 *******************************************************************************/
gap_attr_db_init(void)380 void gap_attr_db_init(void)
381 {
382     tBT_UUID        app_uuid = {LEN_UUID_128,{0}};
383     tBT_UUID        uuid     = {LEN_UUID_16,{UUID_SERVCLASS_GAP_SERVER}};
384     UINT16          service_handle;
385     tGAP_ATTR       *p_db_attr = &gap_cb.gatt_attr[0];
386     tGATT_STATUS    status;
387 
388     /* Fill our internal UUID with a fixed pattern 0x82 */
389     memset (&app_uuid.uu.uuid128, 0x82, LEN_UUID_128);
390     memset(gap_cb.gatt_attr, 0, sizeof(tGAP_ATTR) *GAP_MAX_CHAR_NUM);
391 
392     gap_cb.gatt_if = GATT_Register(&app_uuid, &gap_cback);
393 
394     GATT_StartIf(gap_cb.gatt_if);
395 
396     /* Create a GAP service */
397     service_handle = GATTS_CreateService (gap_cb.gatt_if, &uuid, 0, GAP_MAX_ATTR_NUM, TRUE);
398 
399     GAP_TRACE_EVENT ("gap_attr_db_init service_handle = %d", service_handle);
400 
401     /* add Device Name Characteristic
402     */
403     uuid.len = LEN_UUID_16;
404     uuid.uu.uuid16 = p_db_attr->uuid = GATT_UUID_GAP_DEVICE_NAME;
405     p_db_attr->handle = GATTS_AddCharacteristic(service_handle, &uuid, GATT_PERM_READ, GATT_CHAR_PROP_BIT_READ);
406     p_db_attr ++;
407 
408     /* add Icon characteristic
409     */
410     uuid.uu.uuid16   = p_db_attr->uuid = GATT_UUID_GAP_ICON;
411     p_db_attr->handle = GATTS_AddCharacteristic(service_handle,
412                                                 &uuid,
413                                                 GATT_PERM_READ,
414                                                 GATT_CHAR_PROP_BIT_READ);
415     p_db_attr ++;
416 
417 #if BTM_PERIPHERAL_ENABLED == TRUE       /* Only needed for peripheral testing */
418     /* add preferred connection parameter characteristic
419     */
420     uuid.uu.uuid16 = p_db_attr->uuid = GATT_UUID_GAP_PREF_CONN_PARAM;
421     p_db_attr->attr_value.conn_param.int_max = GAP_PREFER_CONN_INT_MAX; /* 6 */
422     p_db_attr->attr_value.conn_param.int_min = GAP_PREFER_CONN_INT_MIN; /* 0 */
423     p_db_attr->attr_value.conn_param.latency = GAP_PREFER_CONN_LATENCY; /* 0 */
424     p_db_attr->attr_value.conn_param.sp_tout = GAP_PREFER_CONN_SP_TOUT; /* 2000 */
425     p_db_attr->handle = GATTS_AddCharacteristic(service_handle,
426                                                 &uuid,
427                                                 GATT_PERM_READ,
428                                                 GATT_CHAR_PROP_BIT_READ);
429     p_db_attr ++;
430 #endif
431 
432     /* add Central address resolution Characteristic */
433     uuid.len = LEN_UUID_16;
434     uuid.uu.uuid16 = p_db_attr->uuid = GATT_UUID_GAP_CENTRAL_ADDR_RESOL;
435     p_db_attr->handle = GATTS_AddCharacteristic(service_handle, &uuid,
436                                                 GATT_PERM_READ, GATT_CHAR_PROP_BIT_READ);
437     p_db_attr->attr_value.addr_resolution = 0;
438     p_db_attr++;
439 
440     /* start service now */
441     memset (&app_uuid.uu.uuid128, 0x81, LEN_UUID_128);
442 
443     status = GATTS_StartService(gap_cb.gatt_if, service_handle, GAP_TRANSPORT_SUPPORTED );
444 
445     GAP_TRACE_EVENT ("GAP App gatt_if: %d  s_hdl = %d start_status=%d",
446                       gap_cb.gatt_if, service_handle, status);
447 
448 
449 
450 }
451 
452 /*******************************************************************************
453 **
454 ** Function         GAP_BleAttrDBUpdate
455 **
456 ** Description      GAP ATT database update.
457 **
458 ** Returns          void.
459 **
460 *******************************************************************************/
GAP_BleAttrDBUpdate(UINT16 attr_uuid,tGAP_BLE_ATTR_VALUE * p_value)461 void GAP_BleAttrDBUpdate(UINT16 attr_uuid, tGAP_BLE_ATTR_VALUE *p_value)
462 {
463     tGAP_ATTR  *p_db_attr = gap_cb.gatt_attr;
464     UINT8       i = 0;
465 
466     GAP_TRACE_EVENT("GAP_BleAttrDBUpdate attr_uuid=0x%04x", attr_uuid);
467 
468     for (i = 0; i < GAP_MAX_CHAR_NUM; i ++, p_db_attr ++)
469     {
470         if (p_db_attr->uuid == attr_uuid)
471         {
472             GAP_TRACE_EVENT("Found attr_uuid=0x%04x", attr_uuid);
473 
474             switch (attr_uuid)
475             {
476             case GATT_UUID_GAP_ICON:
477                 p_db_attr->attr_value.icon  =  p_value->icon;
478                 break;
479 
480             case GATT_UUID_GAP_PREF_CONN_PARAM:
481                 memcpy((void *)&p_db_attr->attr_value.conn_param,
482                        (const void *)&p_value->conn_param, sizeof(tGAP_BLE_PREF_PARAM));
483                 break;
484 
485             case GATT_UUID_GAP_DEVICE_NAME:
486                 BTM_SetLocalDeviceName((char *)p_value->p_dev_name);
487                 break;
488 
489             case GATT_UUID_GAP_CENTRAL_ADDR_RESOL:
490                 p_db_attr->attr_value.addr_resolution = p_value->addr_resolution;
491                 break;
492 
493             }
494             break;
495         }
496     }
497 
498     return;
499 }
500 
501 /*******************************************************************************
502 **
503 ** Function         gap_ble_send_cl_read_request
504 **
505 ** Description      utility function to send a read request for a GAP charactersitic
506 **
507 ** Returns          TRUE if read started, else FALSE if GAP is busy
508 **
509 *******************************************************************************/
gap_ble_send_cl_read_request(tGAP_CLCB * p_clcb)510 BOOLEAN gap_ble_send_cl_read_request(tGAP_CLCB *p_clcb)
511 {
512     tGATT_READ_PARAM        param;
513     UINT16                  uuid = 0;
514     BOOLEAN                 started = FALSE;
515 
516     if (gap_ble_dequeue_request(p_clcb, &uuid, &p_clcb->p_cback))
517     {
518         memset(&param, 0, sizeof(tGATT_READ_PARAM));
519 
520         param.service.uuid.len       = LEN_UUID_16;
521         param.service.uuid.uu.uuid16 = uuid;
522         param.service.s_handle       = 1;
523         param.service.e_handle       = 0xFFFF;
524         param.service.auth_req       = 0;
525 
526         if (GATTC_Read(p_clcb->conn_id, GATT_READ_BY_TYPE, &param) == GATT_SUCCESS)
527         {
528             p_clcb->cl_op_uuid = uuid;
529             started = TRUE;
530         }
531     }
532 
533     return started;
534 }
535 
536 /*******************************************************************************
537 **
538 ** Function         gap_ble_cl_op_cmpl
539 **
540 ** Description      GAP client operation complete callback
541 **
542 ** Returns          void
543 **
544 *******************************************************************************/
gap_ble_cl_op_cmpl(tGAP_CLCB * p_clcb,BOOLEAN status,UINT16 len,UINT8 * p_name)545 void gap_ble_cl_op_cmpl(tGAP_CLCB *p_clcb, BOOLEAN status, UINT16 len, UINT8 *p_name)
546 {
547     tGAP_BLE_CMPL_CBACK *p_cback = p_clcb->p_cback;
548     UINT16                  op = p_clcb->cl_op_uuid;
549 
550     GAP_TRACE_EVENT("gap_ble_cl_op_cmpl status: %d", status);
551 
552     p_clcb->cl_op_uuid = 0;
553     p_clcb->p_cback=NULL;
554 
555     if (p_cback && op)
556     {
557         GAP_TRACE_EVENT("calling gap_ble_cl_op_cmpl");
558         (* p_cback)(status, p_clcb->bda, len, (char *)p_name);
559     }
560 
561     /* if no further activity is requested in callback, drop the link */
562     if (p_clcb->connected)
563     {
564         if (!gap_ble_send_cl_read_request(p_clcb))
565         {
566             GATT_Disconnect(p_clcb->conn_id);
567             gap_ble_dealloc_clcb(p_clcb);
568         }
569     }
570 }
571 
572 /*******************************************************************************
573 **
574 ** Function         gap_ble_c_connect_cback
575 **
576 ** Description      Client connection callback.
577 **
578 ** Returns          void
579 **
580 *******************************************************************************/
gap_ble_c_connect_cback(tGATT_IF gatt_if,BD_ADDR bda,UINT16 conn_id,BOOLEAN connected,tGATT_DISCONN_REASON reason,tGATT_TRANSPORT transport)581 static void gap_ble_c_connect_cback (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id,
582                                      BOOLEAN connected, tGATT_DISCONN_REASON reason,
583                                      tGATT_TRANSPORT transport)
584 {
585     tGAP_CLCB   *p_clcb = gap_find_clcb_by_bd_addr (bda);
586 
587     UNUSED(gatt_if);
588     UNUSED(transport);
589 
590     if (p_clcb != NULL)
591     {
592         if (connected)
593         {
594             p_clcb->conn_id = conn_id;
595             p_clcb->connected = TRUE;
596             /* start operation is pending */
597             gap_ble_send_cl_read_request(p_clcb);
598         }
599         else
600         {
601             p_clcb->connected = FALSE;
602             gap_ble_cl_op_cmpl(p_clcb, FALSE, 0, NULL);
603             /* clean up clcb */
604             gap_ble_dealloc_clcb(p_clcb);
605         }
606     }
607 }
608 
609 /*******************************************************************************
610 **
611 ** Function         gap_ble_c_cmpl_cback
612 **
613 ** Description      Client operation complete callback.
614 **
615 ** Returns          void
616 **
617 *******************************************************************************/
gap_ble_c_cmpl_cback(UINT16 conn_id,tGATTC_OPTYPE op,tGATT_STATUS status,tGATT_CL_COMPLETE * p_data)618 static void gap_ble_c_cmpl_cback (UINT16 conn_id, tGATTC_OPTYPE op, tGATT_STATUS status, tGATT_CL_COMPLETE *p_data)
619 
620 {
621     tGAP_CLCB   *p_clcb = gap_ble_find_clcb_by_conn_id(conn_id);
622     UINT16      op_type;
623     UINT16      min, max, latency, tout;
624     UINT16      len;
625     UINT8       *pp;
626 
627     if (p_clcb == NULL)
628         return;
629 
630     op_type = p_clcb->cl_op_uuid;
631 
632     GAP_TRACE_EVENT ("gap_ble_c_cmpl_cback() - op_code: 0x%02x  status: 0x%02x  read_type: 0x%04x", op, status, op_type);
633     /* Currently we only issue read commands */
634     if (op != GATTC_OPTYPE_READ)
635         return;
636 
637     if (status != GATT_SUCCESS)
638     {
639         gap_ble_cl_op_cmpl(p_clcb, FALSE, 0, NULL);
640         return;
641     }
642 
643     pp = p_data->att_value.value;
644 
645     switch (op_type)
646     {
647         case GATT_UUID_GAP_PREF_CONN_PARAM:
648             GAP_TRACE_EVENT ("GATT_UUID_GAP_PREF_CONN_PARAM");
649             /* Extract the peripheral preferred connection parameters and save them */
650 
651             STREAM_TO_UINT16 (min, pp);
652             STREAM_TO_UINT16 (max, pp);
653             STREAM_TO_UINT16 (latency, pp);
654             STREAM_TO_UINT16 (tout, pp);
655 
656             BTM_BleSetPrefConnParams (p_clcb->bda, min, max, latency, tout);
657             /* release the connection here */
658             gap_ble_cl_op_cmpl(p_clcb, TRUE, 0, NULL);
659             break;
660 
661         case GATT_UUID_GAP_DEVICE_NAME:
662             GAP_TRACE_EVENT ("GATT_UUID_GAP_DEVICE_NAME");
663             len = (UINT16)strlen((char *)pp);
664             if (len > GAP_CHAR_DEV_NAME_SIZE)
665                 len = GAP_CHAR_DEV_NAME_SIZE;
666             gap_ble_cl_op_cmpl(p_clcb, TRUE, len, pp);
667             break;
668 
669         case GATT_UUID_GAP_CENTRAL_ADDR_RESOL:
670             gap_ble_cl_op_cmpl(p_clcb, TRUE, 1, pp);
671             break;
672     }
673 }
674 
675 
676 /*******************************************************************************
677 **
678 ** Function         gap_ble_accept_cl_operation
679 **
680 ** Description      Start a process to read peer address resolution capability
681 **
682 ** Returns          TRUE if request accepted
683 **
684 *******************************************************************************/
gap_ble_accept_cl_operation(BD_ADDR peer_bda,UINT16 uuid,tGAP_BLE_CMPL_CBACK * p_cback)685 BOOLEAN gap_ble_accept_cl_operation(BD_ADDR peer_bda, UINT16 uuid, tGAP_BLE_CMPL_CBACK *p_cback)
686 {
687     tGAP_CLCB *p_clcb;
688     BOOLEAN started = FALSE;
689 
690     if (p_cback == NULL && uuid != GATT_UUID_GAP_PREF_CONN_PARAM)
691         return(started);
692 
693     if ((p_clcb = gap_find_clcb_by_bd_addr (peer_bda)) == NULL)
694     {
695         if ((p_clcb = gap_clcb_alloc(peer_bda)) == NULL)
696         {
697             GAP_TRACE_ERROR("gap_ble_accept_cl_operation max connection reached");
698             return started;
699         }
700     }
701 
702     GAP_TRACE_EVENT ("%s() - BDA: %08x%04x  cl_op_uuid: 0x%04x",
703                       __FUNCTION__,
704                       (peer_bda[0]<<24)+(peer_bda[1]<<16)+(peer_bda[2]<<8)+peer_bda[3],
705                       (peer_bda[4]<<8)+peer_bda[5], uuid);
706 
707     if (GATT_GetConnIdIfConnected(gap_cb.gatt_if, peer_bda, &p_clcb->conn_id, BT_TRANSPORT_LE))
708         p_clcb->connected = TRUE;
709 
710     /* hold the link here */
711     if (!GATT_Connect(gap_cb.gatt_if, p_clcb->bda, TRUE, BT_TRANSPORT_LE, false))
712         return started;
713 
714     /* enqueue the request */
715     gap_ble_enqueue_request(p_clcb, uuid, p_cback);
716 
717     if (p_clcb->connected && p_clcb->cl_op_uuid == 0)
718         started = gap_ble_send_cl_read_request(p_clcb);
719     else /* wait for connection up or pending operation to finish */
720         started = TRUE;
721 
722    return started;
723 }
724 /*******************************************************************************
725 **
726 ** Function         GAP_BleReadPeerPrefConnParams
727 **
728 ** Description      Start a process to read a connected peripheral's preferred
729 **                  connection parameters
730 **
731 ** Returns          TRUE if read started, else FALSE if GAP is busy
732 **
733 *******************************************************************************/
GAP_BleReadPeerPrefConnParams(BD_ADDR peer_bda)734 BOOLEAN GAP_BleReadPeerPrefConnParams (BD_ADDR peer_bda)
735 {
736     return gap_ble_accept_cl_operation (peer_bda, GATT_UUID_GAP_PREF_CONN_PARAM, NULL);
737 }
738 
739 /*******************************************************************************
740 **
741 ** Function         GAP_BleReadPeerDevName
742 **
743 ** Description      Start a process to read a connected peripheral's device name.
744 **
745 ** Returns          TRUE if request accepted
746 **
747 *******************************************************************************/
GAP_BleReadPeerDevName(BD_ADDR peer_bda,tGAP_BLE_CMPL_CBACK * p_cback)748 BOOLEAN GAP_BleReadPeerDevName (BD_ADDR peer_bda, tGAP_BLE_CMPL_CBACK *p_cback)
749 {
750     return gap_ble_accept_cl_operation (peer_bda, GATT_UUID_GAP_DEVICE_NAME, p_cback);
751 }
752 
753 /*******************************************************************************
754 **
755 ** Function         GAP_BleReadPeerAddressResolutionCap
756 **
757 ** Description      Start a process to read peer address resolution capability
758 **
759 ** Returns          TRUE if request accepted
760 **
761 *******************************************************************************/
GAP_BleReadPeerAddressResolutionCap(BD_ADDR peer_bda,tGAP_BLE_CMPL_CBACK * p_cback)762 BOOLEAN GAP_BleReadPeerAddressResolutionCap (BD_ADDR peer_bda, tGAP_BLE_CMPL_CBACK *p_cback)
763 {
764     return gap_ble_accept_cl_operation(peer_bda, GATT_UUID_GAP_CENTRAL_ADDR_RESOL, p_cback);
765 }
766 
767 /*******************************************************************************
768 **
769 ** Function         GAP_BleCancelReadPeerDevName
770 **
771 ** Description      Cancel reading a peripheral's device name.
772 **
773 ** Returns          TRUE if request accepted
774 **
775 *******************************************************************************/
GAP_BleCancelReadPeerDevName(BD_ADDR peer_bda)776 BOOLEAN GAP_BleCancelReadPeerDevName (BD_ADDR peer_bda)
777 {
778     tGAP_CLCB *p_clcb = gap_find_clcb_by_bd_addr (peer_bda);
779 
780     GAP_TRACE_EVENT ("GAP_BleCancelReadPeerDevName() - BDA: %08x%04x  cl_op_uuid: 0x%04x",
781                       (peer_bda[0]<<24)+(peer_bda[1]<<16)+(peer_bda[2]<<8)+peer_bda[3],
782                       (peer_bda[4]<<8)+peer_bda[5], (p_clcb == NULL)? 0 : p_clcb->cl_op_uuid);
783 
784     if (p_clcb == NULL)
785     {
786         GAP_TRACE_ERROR ("Cannot cancel current op is not get dev name");
787         return FALSE;
788     }
789 
790     if (!p_clcb->connected)
791     {
792         if (!GATT_CancelConnect(gap_cb.gatt_if, peer_bda, TRUE))
793         {
794             GAP_TRACE_ERROR ("Cannot cancel where No connection id");
795             return FALSE;
796         }
797     }
798 
799     gap_ble_cl_op_cmpl(p_clcb, FALSE, 0, NULL);
800 
801     return(TRUE);
802 }
803 
804 #endif  /* BLE_INCLUDED */
805 
806 
807 
808 
809 
810