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 the handsfree client.
23 *
24 ******************************************************************************/
25
26#include "bta_api.h"
27#include "bta_hf_client_api.h"
28#include "bta_hf_client_int.h"
29#include "bta_dm_int.h"
30#include "l2c_api.h"
31#include "port_api.h"
32#include "bta_sys.h"
33#include "utl.h"
34#include "bt_utils.h"
35#include "osi/include/compat.h"
36#include <string.h>
37
38/*****************************************************************************
39**  Constants
40*****************************************************************************/
41
42/* maximum length of data to read from RFCOMM */
43#define BTA_HF_CLIENT_RFC_READ_MAX     512
44
45/*******************************************************************************
46**
47** Function         bta_hf_client_register
48**
49** Description      This function initializes values of the scb and sets up
50**                  the SDP record for the services.
51**
52**
53** Returns          void
54**
55*******************************************************************************/
56void bta_hf_client_register(tBTA_HF_CLIENT_DATA *p_data)
57{
58    tBTA_HF_CLIENT evt;
59    tBTA_UTL_COD   cod;
60
61    memset(&evt, 0, sizeof(evt));
62
63    /* initialize control block */
64    bta_hf_client_scb_init();
65
66    bta_hf_client_cb.scb.serv_sec_mask = p_data->api_register.sec_mask;
67    bta_hf_client_cb.scb.features = p_data->api_register.features;
68
69    /* initialize AT control block */
70    bta_hf_client_at_init();
71
72    /* create SDP records */
73    bta_hf_client_create_record(p_data);
74
75    /* Set the Audio service class bit */
76    cod.service = BTM_COD_SERVICE_AUDIO;
77    utl_set_device_class(&cod, BTA_UTL_SET_COD_SERVICE_CLASS);
78
79    /* start RFCOMM server */
80    bta_hf_client_start_server();
81
82    /* call app callback with register event */
83    evt.reg.status = BTA_HF_CLIENT_SUCCESS;
84    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_REGISTER_EVT, &evt);
85}
86
87/*******************************************************************************
88**
89** Function         bta_hf_client_deregister
90**
91** Description      This function removes the sdp records, closes the RFCOMM
92**                  servers, and deallocates the service control block.
93**
94**
95** Returns          void
96**
97*******************************************************************************/
98void bta_hf_client_deregister(tBTA_HF_CLIENT_DATA *p_data)
99{
100    bta_hf_client_cb.scb.deregister = TRUE;
101
102    /* remove sdp record */
103    bta_hf_client_del_record(p_data);
104
105    /* remove rfcomm server */
106    bta_hf_client_close_server();
107
108    /* disable */
109    bta_hf_client_scb_disable();
110}
111
112/*******************************************************************************
113**
114** Function         bta_hf_client_start_dereg
115**
116** Description      Start a deregister event.
117**
118**
119** Returns          void
120**
121*******************************************************************************/
122void bta_hf_client_start_dereg(tBTA_HF_CLIENT_DATA *p_data)
123{
124    bta_hf_client_cb.scb.deregister = TRUE;
125
126    /* remove sdp record */
127    bta_hf_client_del_record(p_data);
128}
129
130/*******************************************************************************
131**
132** Function         bta_hf_client_start_close
133**
134** Description      Start the process of closing SCO and RFCOMM connection.
135**
136**
137** Returns          void
138**
139*******************************************************************************/
140void bta_hf_client_start_close(tBTA_HF_CLIENT_DATA *p_data)
141{
142    /* Take the link out of sniff and set L2C idle time to 0 */
143    bta_dm_pm_active(bta_hf_client_cb.scb.peer_addr);
144    L2CA_SetIdleTimeoutByBdAddr(bta_hf_client_cb.scb.peer_addr, 0, BT_TRANSPORT_BR_EDR);
145
146    /* if SCO is open close SCO and wait on RFCOMM close */
147    if (bta_hf_client_cb.scb.sco_state == BTA_HF_CLIENT_SCO_OPEN_ST)
148    {
149        bta_hf_client_cb.scb.sco_close_rfc = TRUE;
150    }
151    else
152    {
153        bta_hf_client_rfc_do_close(p_data);
154    }
155
156    /* always do SCO shutdown to handle all SCO corner cases */
157    bta_hf_client_sco_shutdown(NULL);
158}
159
160/*******************************************************************************
161**
162** Function         bta_hf_client_start_open
163**
164** Description      This starts an HF Client open.
165**
166**
167** Returns          void
168**
169*******************************************************************************/
170void bta_hf_client_start_open(tBTA_HF_CLIENT_DATA *p_data)
171{
172    BD_ADDR pending_bd_addr;
173
174    /* store parameters */
175    if (p_data)
176    {
177        bdcpy(bta_hf_client_cb.scb.peer_addr, p_data->api_open.bd_addr);
178        bta_hf_client_cb.scb.cli_sec_mask = p_data->api_open.sec_mask;
179    }
180
181    /* Check if RFCOMM has any incoming connection to avoid collision. */
182    if (PORT_IsOpening (pending_bd_addr))
183    {
184        /* Let the incoming connection goes through.                        */
185        /* Issue collision for now.                                         */
186        /* We will decide what to do when we find incoming connection later.*/
187        bta_hf_client_collision_cback (0, BTA_ID_HS, 0, bta_hf_client_cb.scb.peer_addr);
188        return;
189    }
190
191    /* close server */
192    bta_hf_client_close_server();
193
194    /* set role */
195    bta_hf_client_cb.scb.role = BTA_HF_CLIENT_INT;
196
197    /* do service search */
198    bta_hf_client_do_disc();
199}
200
201/*******************************************************************************
202**
203** Function         bta_hf_client_cback_open
204**
205** Description      Send open callback event to application.
206**
207**
208** Returns          void
209**
210*******************************************************************************/
211static void bta_hf_client_cback_open(tBTA_HF_CLIENT_DATA *p_data, tBTA_HF_CLIENT_STATUS status)
212{
213    tBTA_HF_CLIENT evt;
214
215    memset(&evt, 0, sizeof(evt));
216
217    /* call app callback with open event */
218    evt.open.status = status;
219    if(p_data)
220    {
221        /* if p_data is provided then we need to pick the bd address from the open api structure */
222        bdcpy(evt.open.bd_addr, p_data->api_open.bd_addr);
223    }
224    else
225    {
226        bdcpy(evt.open.bd_addr, bta_hf_client_cb.scb.peer_addr);
227    }
228
229    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_OPEN_EVT, &evt);
230}
231
232/*******************************************************************************
233**
234** Function         bta_hf_client_rfc_open
235**
236** Description      Handle RFCOMM channel open.
237**
238**
239** Returns          void
240**
241*******************************************************************************/
242void bta_hf_client_rfc_open(tBTA_HF_CLIENT_DATA *p_data)
243{
244    UNUSED(p_data);
245
246    bta_sys_conn_open(BTA_ID_HS, 1, bta_hf_client_cb.scb.peer_addr);
247
248    bta_hf_client_cback_open(NULL, BTA_HF_CLIENT_SUCCESS);
249
250    /* start SLC procedure */
251    bta_hf_client_slc_seq(FALSE);
252}
253
254/*******************************************************************************
255**
256** Function         bta_hf_client_rfc_acp_open
257**
258** Description      Handle RFCOMM channel open when accepting connection.
259**
260**
261** Returns          void
262**
263*******************************************************************************/
264void bta_hf_client_rfc_acp_open(tBTA_HF_CLIENT_DATA *p_data)
265{
266    UINT16          lcid;
267    BD_ADDR         dev_addr;
268    int             status;
269
270    /* set role */
271    bta_hf_client_cb.scb.role = BTA_HF_CLIENT_ACP;
272
273    APPL_TRACE_DEBUG ("bta_hf_client_rfc_acp_open: serv_handle = %d rfc.port_handle = %d",
274            bta_hf_client_cb.scb.serv_handle, p_data->rfc.port_handle);
275
276    /* get bd addr of peer */
277    if (PORT_SUCCESS != (status=PORT_CheckConnection(p_data->rfc.port_handle, dev_addr, &lcid)))
278    {
279        APPL_TRACE_DEBUG ("bta_hf_client_rfc_acp_open error PORT_CheckConnection returned status %d", status);
280    }
281
282    /* Collision Handling */
283    if (alarm_is_scheduled(bta_hf_client_cb.scb.collision_timer)) {
284        alarm_cancel(bta_hf_client_cb.scb.collision_timer);
285
286        if (bdcmp (dev_addr, bta_hf_client_cb.scb.peer_addr) == 0)
287        {
288            /* If incoming and outgoing device are same, nothing more to do.            */
289            /* Outgoing conn will be aborted because we have successful incoming conn.  */
290        }
291        else
292        {
293            /* Resume outgoing connection. */
294            bta_hf_client_resume_open ();
295        }
296    }
297
298    bdcpy (bta_hf_client_cb.scb.peer_addr, dev_addr);
299    bta_hf_client_cb.scb.conn_handle = p_data->rfc.port_handle;
300
301    /* do service discovery to get features */
302    bta_hf_client_do_disc();
303
304    /* continue with open processing */
305    bta_hf_client_rfc_open(p_data);
306}
307
308/*******************************************************************************
309**
310** Function         bta_hf_client_rfc_fail
311**
312** Description      RFCOMM connection failed.
313**
314**
315** Returns          void
316**
317*******************************************************************************/
318void bta_hf_client_rfc_fail(tBTA_HF_CLIENT_DATA *p_data)
319{
320    UNUSED(p_data);
321
322    /* reinitialize stuff */
323    bta_hf_client_cb.scb.conn_handle = 0;
324    bta_hf_client_cb.scb.peer_features = 0;
325    bta_hf_client_cb.scb.chld_features = 0;
326    bta_hf_client_cb.scb.role = BTA_HF_CLIENT_ACP;
327    bta_hf_client_cb.scb.svc_conn = FALSE;
328    bta_hf_client_cb.scb.send_at_reply = FALSE;
329    bta_hf_client_cb.scb.negotiated_codec = BTM_SCO_CODEC_CVSD;
330
331    bta_hf_client_at_reset();
332
333    /* reopen server */
334    bta_hf_client_start_server();
335
336    /* call open cback w. failure */
337    bta_hf_client_cback_open(NULL, BTA_HF_CLIENT_FAIL_RFCOMM);
338}
339
340/*******************************************************************************
341**
342** Function         bta_hf_client_disc_fail
343**
344** Description      This function handles a discovery failure.
345**
346**
347** Returns          void
348**
349*******************************************************************************/
350void bta_hf_client_disc_fail(tBTA_HF_CLIENT_DATA *p_data)
351{
352    UNUSED(p_data);
353
354    /* reopen server */
355    bta_hf_client_start_server();
356
357    /* reinitialize stuff */
358
359    /* call open cback w. failure */
360    bta_hf_client_cback_open(NULL, BTA_HF_CLIENT_FAIL_SDP);
361}
362
363/*******************************************************************************
364**
365** Function         bta_hf_client_open_fail
366**
367** Description      open connection failed.
368**
369**
370** Returns          void
371**
372*******************************************************************************/
373void bta_hf_client_open_fail(tBTA_HF_CLIENT_DATA *p_data)
374{
375    /* call open cback w. failure */
376    bta_hf_client_cback_open(p_data, BTA_HF_CLIENT_FAIL_RESOURCES);
377}
378
379/*******************************************************************************
380**
381** Function         bta_hf_client_rfc_close
382**
383** Description      RFCOMM connection closed.
384**
385**
386** Returns          void
387**
388*******************************************************************************/
389void bta_hf_client_rfc_close(tBTA_HF_CLIENT_DATA *p_data)
390{
391    UNUSED(p_data);
392
393    /* reinitialize stuff */
394    bta_hf_client_cb.scb.peer_features = 0;
395    bta_hf_client_cb.scb.chld_features = 0;
396    bta_hf_client_cb.scb.role = BTA_HF_CLIENT_ACP;
397    bta_hf_client_cb.scb.svc_conn = FALSE;
398    bta_hf_client_cb.scb.send_at_reply = FALSE;
399    bta_hf_client_cb.scb.negotiated_codec = BTM_SCO_CODEC_CVSD;
400
401    bta_hf_client_at_reset();
402
403    bta_sys_conn_close(BTA_ID_HS, 1, bta_hf_client_cb.scb.peer_addr);
404
405    /* call close cback */
406    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_CLOSE_EVT, NULL);
407
408    /* if not deregistering reopen server */
409    if (bta_hf_client_cb.scb.deregister == FALSE)
410    {
411        /* Clear peer bd_addr so instance can be reused */
412        bdcpy(bta_hf_client_cb.scb.peer_addr, bd_addr_null);
413
414        /* start server as it might got closed on open*/
415        bta_hf_client_start_server();
416
417        bta_hf_client_cb.scb.conn_handle = 0;
418
419        /* Make sure SCO is shutdown */
420        bta_hf_client_sco_shutdown(NULL);
421
422        bta_sys_sco_unuse(BTA_ID_HS, 1, bta_hf_client_cb.scb.peer_addr);
423    }
424    /* else close port and deallocate scb */
425    else
426    {
427        bta_hf_client_close_server();
428        bta_hf_client_scb_disable();
429    }
430}
431
432/*******************************************************************************
433**
434** Function         bta_hf_client_disc_int_res
435**
436** Description      This function handles a discovery result when initiator.
437**
438**
439** Returns          void
440**
441*******************************************************************************/
442void bta_hf_client_disc_int_res(tBTA_HF_CLIENT_DATA *p_data)
443{
444    UINT16 event = BTA_HF_CLIENT_DISC_FAIL_EVT;
445
446    APPL_TRACE_DEBUG ("bta_hf_client_disc_int_res: Status: %d", p_data->disc_result.status);
447
448    /* if found service */
449    if (p_data->disc_result.status == SDP_SUCCESS ||
450        p_data->disc_result.status == SDP_DB_FULL)
451    {
452        /* get attributes */
453        if (bta_hf_client_sdp_find_attr())
454        {
455            event = BTA_HF_CLIENT_DISC_OK_EVT;
456        }
457    }
458
459    /* free discovery db */
460    bta_hf_client_free_db(p_data);
461
462    /* send ourselves sdp ok/fail event */
463    bta_hf_client_sm_execute(event, p_data);
464}
465
466/*******************************************************************************
467**
468** Function         bta_hf_client_disc_acp_res
469**
470** Description      This function handles a discovery result when acceptor.
471**
472**
473** Returns          void
474**
475*******************************************************************************/
476void bta_hf_client_disc_acp_res(tBTA_HF_CLIENT_DATA *p_data)
477{
478    /* if found service */
479    if (p_data->disc_result.status == SDP_SUCCESS ||
480        p_data->disc_result.status == SDP_DB_FULL)
481    {
482        /* get attributes */
483        bta_hf_client_sdp_find_attr();
484    }
485
486    /* free discovery db */
487    bta_hf_client_free_db(p_data);
488}
489
490/*******************************************************************************
491**
492** Function         bta_hf_client_rfc_data
493**
494** Description      Read and process data from RFCOMM.
495**
496**
497** Returns          void
498**
499*******************************************************************************/
500void bta_hf_client_rfc_data(tBTA_HF_CLIENT_DATA *p_data)
501{
502    UINT16  len;
503    char    buf[BTA_HF_CLIENT_RFC_READ_MAX];
504    UNUSED(p_data);
505
506    memset(buf, 0, sizeof(buf));
507
508    /* read data from rfcomm; if bad status, we're done */
509    while (PORT_ReadData(bta_hf_client_cb.scb.conn_handle, buf, BTA_HF_CLIENT_RFC_READ_MAX, &len) == PORT_SUCCESS)
510    {
511        /* if no data, we're done */
512        if (len == 0)
513        {
514            break;
515        }
516
517        bta_hf_client_at_parse(buf, len);
518
519        /* no more data to read, we're done */
520        if (len < BTA_HF_CLIENT_RFC_READ_MAX)
521        {
522            break;
523        }
524    }
525}
526
527/*******************************************************************************
528**
529** Function         bta_hf_client_svc_conn_open
530**
531** Description      Service level connection opened
532**
533**
534** Returns          void
535**
536*******************************************************************************/
537void bta_hf_client_svc_conn_open(tBTA_HF_CLIENT_DATA *p_data)
538{
539    tBTA_HF_CLIENT evt;
540    UNUSED(p_data);
541
542    memset(&evt, 0, sizeof(evt));
543
544    if (!bta_hf_client_cb.scb.svc_conn)
545    {
546        /* set state variable */
547        bta_hf_client_cb.scb.svc_conn = TRUE;
548
549        /* call callback */
550        evt.conn.peer_feat = bta_hf_client_cb.scb.peer_features;
551        evt.conn.chld_feat = bta_hf_client_cb.scb.chld_features;
552
553        (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_CONN_EVT, &evt);
554    }
555}
556
557/*******************************************************************************
558**
559** Function         bta_hf_client_cback_ind
560**
561** Description      Send indicator callback event to application.
562**
563** Returns          void
564**
565*******************************************************************************/
566void bta_hf_client_ind(tBTA_HF_CLIENT_IND_TYPE type, UINT16 value)
567{
568    tBTA_HF_CLIENT evt;
569
570    memset(&evt, 0, sizeof(evt));
571
572    evt.ind.type = type;
573    evt.ind.value = value;
574
575    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_IND_EVT, &evt);
576}
577
578/*******************************************************************************
579**
580** Function         bta_hf_client_evt_val
581**
582** Description      Send event to application.
583**                  This is a generic helper for events with common data.
584**
585**
586** Returns          void
587**
588*******************************************************************************/
589void bta_hf_client_evt_val(tBTA_HF_CLIENT_EVT type, UINT16 value)
590{
591    tBTA_HF_CLIENT evt;
592
593    memset(&evt, 0, sizeof(evt));
594
595    evt.val.value = value;
596
597    (*bta_hf_client_cb.p_cback)(type, &evt);
598}
599
600/*******************************************************************************
601**
602** Function         bta_hf_client_operator_name
603**
604** Description      Send operator name event to application.
605**
606**
607** Returns          void
608**
609*******************************************************************************/
610void bta_hf_client_operator_name(char *name)
611{
612    tBTA_HF_CLIENT evt;
613
614    memset(&evt, 0, sizeof(evt));
615
616    strlcpy(evt.operator.name, name, BTA_HF_CLIENT_OPERATOR_NAME_LEN + 1);
617    evt.operator.name[BTA_HF_CLIENT_OPERATOR_NAME_LEN] = '\0';
618
619    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_OPERATOR_NAME_EVT, &evt);
620}
621
622
623/*******************************************************************************
624**
625** Function         bta_hf_client_clip
626**
627** Description      Send CLIP event to application.
628**
629**
630** Returns          void
631**
632*******************************************************************************/
633void bta_hf_client_clip(char *number)
634{
635    tBTA_HF_CLIENT evt;
636
637    memset(&evt, 0, sizeof(evt));
638
639    strlcpy(evt.number.number, number, BTA_HF_CLIENT_NUMBER_LEN + 1);
640    evt.number.number[BTA_HF_CLIENT_NUMBER_LEN] = '\0';
641
642    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_CLIP_EVT, &evt);
643}
644
645/*******************************************************************************
646**
647** Function         bta_hf_client_ccwa
648**
649** Description      Send CLIP event to application.
650**
651**
652** Returns          void
653**
654*******************************************************************************/
655void bta_hf_client_ccwa(char *number)
656{
657    tBTA_HF_CLIENT evt;
658
659    memset(&evt, 0, sizeof(evt));
660
661    strlcpy(evt.number.number, number, BTA_HF_CLIENT_NUMBER_LEN + 1);
662    evt.number.number[BTA_HF_CLIENT_NUMBER_LEN] = '\0';
663
664    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_CCWA_EVT, &evt);
665}
666
667/*******************************************************************************
668**
669** Function         bta_hf_client_at_result
670**
671** Description      Send AT result event to application.
672**
673**
674** Returns          void
675**
676*******************************************************************************/
677void bta_hf_client_at_result(tBTA_HF_CLIENT_AT_RESULT_TYPE type, UINT16 cme)
678{
679    tBTA_HF_CLIENT evt;
680
681    memset(&evt, 0, sizeof(evt));
682
683    evt.result.type = type;
684    evt.result.cme = cme;
685
686    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_AT_RESULT_EVT, &evt);
687}
688
689/*******************************************************************************
690**
691** Function         bta_hf_client_clcc
692**
693** Description      Send clcc event to application.
694**
695**
696** Returns          void
697**
698*******************************************************************************/
699void bta_hf_client_clcc(UINT32 idx, BOOLEAN incoming, UINT8 status, BOOLEAN mpty, char *number)
700{
701    tBTA_HF_CLIENT evt;
702
703    memset(&evt, 0, sizeof(evt));
704
705    evt.clcc.idx = idx;
706    evt.clcc.inc = incoming;
707    evt.clcc.status = status;
708    evt.clcc.mpty = mpty;
709
710    if (number)
711    {
712        evt.clcc.number_present = TRUE;
713        strlcpy(evt.clcc.number, number, BTA_HF_CLIENT_NUMBER_LEN + 1);
714        evt.clcc.number[BTA_HF_CLIENT_NUMBER_LEN] = '\0';
715    }
716
717    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_CLCC_EVT, &evt);
718}
719
720/*******************************************************************************
721**
722** Function         bta_hf_client_cnum
723**
724** Description      Send cnum event to application.
725**
726**
727** Returns          void
728**
729*******************************************************************************/
730void bta_hf_client_cnum(char *number, UINT16 service)
731{
732    tBTA_HF_CLIENT evt;
733
734    memset(&evt, 0, sizeof(evt));
735
736    evt.cnum.service = service;
737    strlcpy(evt.cnum.number, number, BTA_HF_CLIENT_NUMBER_LEN + 1);
738    evt.cnum.number[BTA_HF_CLIENT_NUMBER_LEN] = '\0';
739
740    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_CNUM_EVT, &evt);
741}
742
743/*******************************************************************************
744**
745** Function         bta_hf_client_binp
746**
747** Description      Send BINP event to application.
748**
749**
750** Returns          void
751**
752*******************************************************************************/
753void bta_hf_client_binp(char *number)
754{
755    tBTA_HF_CLIENT evt;
756
757    memset(&evt, 0, sizeof(evt));
758
759    strlcpy(evt.number.number, number, BTA_HF_CLIENT_NUMBER_LEN + 1);
760    evt.number.number[BTA_HF_CLIENT_NUMBER_LEN] = '\0';
761
762    (*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_BINP_EVT, &evt);
763}
764