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Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging
[qemu.git] / hw / bt / sdp.c
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4d2d181c
AZ		 1/*
2 * Service Discover Protocol server for QEMU L2CAP devices
3 *
4 * Copyright (C) 2008 Andrzej Zaborowski <[email protected]>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
fad6cb1a 16 * You should have received a copy of the GNU General Public License along
8167ee88 17 * with this program; if not, see <http://www.gnu.org/licenses/>.
4d2d181c
AZ		 18 */
19
0430891c 20#include "qemu/osdep.h"
bf937a79 21#include "qemu/error-report.h"
4d2d181c 22#include "qemu-common.h"
87776ab7 23#include "qemu/host-utils.h"
83c9f4ca 24#include "hw/bt.h"
4d2d181c
AZ		 25
26struct bt_l2cap_sdp_state_s {
27 struct bt_l2cap_conn_params_s *channel;
28
29 struct sdp_service_record_s {
30 int match;
31
32 int *uuid;
33 int uuids;
34 struct sdp_service_attribute_s {
35 int match;
36
37 int attribute_id;
38 int len;
39 void *pair;
40 } *attribute_list;
41 int attributes;
42 } *service_list;
43 int services;
44};
45
46static ssize_t sdp_datalen(const uint8_t **element, ssize_t *left)
47{
e0df8f18 48 uint32_t len = *(*element) ++ & SDP_DSIZE_MASK;
4d2d181c
AZ		 49
50 if (!*left)
51 return -1;
52 (*left) --;
53
54 if (len < SDP_DSIZE_NEXT1)
55 return 1 << len;
56 else if (len == SDP_DSIZE_NEXT1) {
57 if (*left < 1)
58 return -1;
59 (*left) --;
60
61 return *(*element) ++;
62 } else if (len == SDP_DSIZE_NEXT2) {
63 if (*left < 2)
64 return -1;
65 (*left) -= 2;
66
67 len = (*(*element) ++) << 8;
68 return len | (*(*element) ++);
69 } else {
70 if (*left < 4)
71 return -1;
72 (*left) -= 4;
73
74 len = (*(*element) ++) << 24;
75 len |= (*(*element) ++) << 16;
76 len |= (*(*element) ++) << 8;
77 return len | (*(*element) ++);
78 }
79}
80
81static const uint8_t bt_base_uuid[12] = {
82 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0x80, 0x5f, 0x9b, 0x34, 0xfb,
83};
84
85static int sdp_uuid_match(struct sdp_service_record_s *record,
86 const uint8_t *uuid, ssize_t datalen)
87{
88 int *lo, hi, val;
89
90 if (datalen == 16 || datalen == 4) {
91 if (datalen == 16 && memcmp(uuid + 4, bt_base_uuid, 12))
92 return 0;
93
94 if (uuid[0] | uuid[1])
95 return 0;
96 uuid += 2;
97 }
98
99 val = (uuid[0] << 8) | uuid[1];
100 lo = record->uuid;
101 hi = record->uuids;
102 while (hi >>= 1)
103 if (lo[hi] <= val)
104 lo += hi;
105
106 return *lo == val;
107}
108
109#define CONTINUATION_PARAM_SIZE (1 + sizeof(int))
110#define MAX_PDU_OUT_SIZE 96 /* Arbitrary */
111#define PDU_HEADER_SIZE 5
112#define MAX_RSP_PARAM_SIZE (MAX_PDU_OUT_SIZE - PDU_HEADER_SIZE - \
113 CONTINUATION_PARAM_SIZE)
114
115static int sdp_svc_match(struct bt_l2cap_sdp_state_s *sdp,
116 const uint8_t **req, ssize_t *len)
117{
118 size_t datalen;
119 int i;
120
121 if ((**req & ~SDP_DSIZE_MASK) != SDP_DTYPE_UUID)
122 return 1;
123
124 datalen = sdp_datalen(req, len);
125 if (datalen != 2 && datalen != 4 && datalen != 16)
126 return 1;
127
128 for (i = 0; i < sdp->services; i ++)
129 if (sdp_uuid_match(&sdp->service_list[i], *req, datalen))
130 sdp->service_list[i].match = 1;
131
132 (*req) += datalen;
133 (*len) -= datalen;
134
135 return 0;
136}
137
138static ssize_t sdp_svc_search(struct bt_l2cap_sdp_state_s *sdp,
139 uint8_t *rsp, const uint8_t *req, ssize_t len)
140{
141 ssize_t seqlen;
142 int i, count, start, end, max;
143 int32_t handle;
144
145 /* Perform the search */
146 for (i = 0; i < sdp->services; i ++)
147 sdp->service_list[i].match = 0;
148
149 if (len < 1)
150 return -SDP_INVALID_SYNTAX;
151 if ((*req & ~SDP_DSIZE_MASK) == SDP_DTYPE_SEQ) {
152 seqlen = sdp_datalen(&req, &len);
153 if (seqlen < 3 || len < seqlen)
154 return -SDP_INVALID_SYNTAX;
155 len -= seqlen;
4d2d181c
AZ		 156 while (seqlen)
157 if (sdp_svc_match(sdp, &req, &seqlen))
158 return -SDP_INVALID_SYNTAX;
374ec066
PB		 159 } else {
160 if (sdp_svc_match(sdp, &req, &len)) {
161 return -SDP_INVALID_SYNTAX;
162 }
163 }
4d2d181c
AZ		 164
165 if (len < 3)
166 return -SDP_INVALID_SYNTAX;
a6e4b143 167 max = (req[0] << 8) | req[1];
4d2d181c
AZ		 168 req += 2;
169 len -= 2;
170
171 if (*req) {
172 if (len <= sizeof(int))
173 return -SDP_INVALID_SYNTAX;
174 len -= sizeof(int);
175 memcpy(&start, req + 1, sizeof(int));
176 } else
177 start = 0;
178
a6e4b143 179 if (len > 1)
4d2d181c
AZ		 180 return -SDP_INVALID_SYNTAX;
181
182 /* Output the results */
183 len = 4;
184 count = 0;
185 end = start;
186 for (i = 0; i < sdp->services; i ++)
187 if (sdp->service_list[i].match) {
188 if (count >= start && count < max && len + 4 < MAX_RSP_PARAM_SIZE) {
189 handle = i;
190 memcpy(rsp + len, &handle, 4);
191 len += 4;
192 end = count + 1;
193 }
194
195 count ++;
196 }
197
198 rsp[0] = count >> 8;
199 rsp[1] = count & 0xff;
200 rsp[2] = (end - start) >> 8;
201 rsp[3] = (end - start) & 0xff;
202
203 if (end < count) {
204 rsp[len ++] = sizeof(int);
205 memcpy(rsp + len, &end, sizeof(int));
206 len += 4;
207 } else
208 rsp[len ++] = 0;
209
210 return len;
211}
212
213static int sdp_attr_match(struct sdp_service_record_s *record,
214 const uint8_t **req, ssize_t *len)
215{
216 int i, start, end;
217
218 if (**req == (SDP_DTYPE_UINT | SDP_DSIZE_2)) {
219 (*req) ++;
220 if (*len < 3)
221 return 1;
222
223 start = (*(*req) ++) << 8;
224 start |= *(*req) ++;
225 end = start;
226 *len -= 3;
227 } else if (**req == (SDP_DTYPE_UINT | SDP_DSIZE_4)) {
228 (*req) ++;
229 if (*len < 5)
230 return 1;
231
232 start = (*(*req) ++) << 8;
233 start |= *(*req) ++;
234 end = (*(*req) ++) << 8;
235 end |= *(*req) ++;
236 *len -= 5;
237 } else
238 return 1;
239
240 for (i = 0; i < record->attributes; i ++)
241 if (record->attribute_list[i].attribute_id >= start &&
242 record->attribute_list[i].attribute_id <= end)
243 record->attribute_list[i].match = 1;
244
245 return 0;
246}
247
248static ssize_t sdp_attr_get(struct bt_l2cap_sdp_state_s *sdp,
249 uint8_t *rsp, const uint8_t *req, ssize_t len)
250{
251 ssize_t seqlen;
252 int i, start, end, max;
253 int32_t handle;
254 struct sdp_service_record_s *record;
255 uint8_t *lst;
256
257 /* Perform the search */
258 if (len < 7)
259 return -SDP_INVALID_SYNTAX;
fbc190d8 260 memcpy(&handle, req, 4);
4d2d181c
AZ		 261 req += 4;
262 len -= 4;
263
264 if (handle < 0 || handle > sdp->services)
265 return -SDP_INVALID_RECORD_HANDLE;
266 record = &sdp->service_list[handle];
267
268 for (i = 0; i < record->attributes; i ++)
269 record->attribute_list[i].match = 0;
270
271 max = (req[0] << 8) | req[1];
272 req += 2;
273 len -= 2;
274 if (max < 0x0007)
275 return -SDP_INVALID_SYNTAX;
276
277 if ((*req & ~SDP_DSIZE_MASK) == SDP_DTYPE_SEQ) {
278 seqlen = sdp_datalen(&req, &len);
279 if (seqlen < 3 || len < seqlen)
280 return -SDP_INVALID_SYNTAX;
281 len -= seqlen;
282
283 while (seqlen)
284 if (sdp_attr_match(record, &req, &seqlen))
285 return -SDP_INVALID_SYNTAX;
374ec066
PB		 286 } else {
287 if (sdp_attr_match(record, &req, &len)) {
288 return -SDP_INVALID_SYNTAX;
289 }
290 }
4d2d181c
AZ		 291
292 if (len < 1)
293 return -SDP_INVALID_SYNTAX;
294
295 if (*req) {
296 if (len <= sizeof(int))
297 return -SDP_INVALID_SYNTAX;
298 len -= sizeof(int);
299 memcpy(&start, req + 1, sizeof(int));
300 } else
301 start = 0;
302
303 if (len > 1)
304 return -SDP_INVALID_SYNTAX;
305
306 /* Output the results */
307 lst = rsp + 2;
308 max = MIN(max, MAX_RSP_PARAM_SIZE);
309 len = 3 - start;
310 end = 0;
311 for (i = 0; i < record->attributes; i ++)
312 if (record->attribute_list[i].match) {
313 if (len >= 0 && len + record->attribute_list[i].len < max) {
314 memcpy(lst + len, record->attribute_list[i].pair,
315 record->attribute_list[i].len);
316 end = len + record->attribute_list[i].len;
317 }
318 len += record->attribute_list[i].len;
319 }
320 if (0 >= start) {
321 lst[0] = SDP_DTYPE_SEQ | SDP_DSIZE_NEXT2;
322 lst[1] = (len + start - 3) >> 8;
323 lst[2] = (len + start - 3) & 0xff;
324 }
325
326 rsp[0] = end >> 8;
327 rsp[1] = end & 0xff;
328
329 if (end < len) {
330 len = end + start;
331 lst[end ++] = sizeof(int);
332 memcpy(lst + end, &len, sizeof(int));
333 end += sizeof(int);
334 } else
335 lst[end ++] = 0;
336
337 return end + 2;
338}
339
340static int sdp_svc_attr_match(struct bt_l2cap_sdp_state_s *sdp,
341 const uint8_t **req, ssize_t *len)
342{
343 int i, j, start, end;
344 struct sdp_service_record_s *record;
345
346 if (**req == (SDP_DTYPE_UINT | SDP_DSIZE_2)) {
347 (*req) ++;
348 if (*len < 3)
349 return 1;
350
351 start = (*(*req) ++) << 8;
352 start |= *(*req) ++;
353 end = start;
354 *len -= 3;
355 } else if (**req == (SDP_DTYPE_UINT | SDP_DSIZE_4)) {
356 (*req) ++;
357 if (*len < 5)
358 return 1;
359
360 start = (*(*req) ++) << 8;
361 start |= *(*req) ++;
362 end = (*(*req) ++) << 8;
363 end |= *(*req) ++;
364 *len -= 5;
365 } else
366 return 1;
367
368 for (i = 0; i < sdp->services; i ++)
369 if ((record = &sdp->service_list[i])->match)
370 for (j = 0; j < record->attributes; j ++)
371 if (record->attribute_list[j].attribute_id >= start &&
372 record->attribute_list[j].attribute_id <= end)
373 record->attribute_list[j].match = 1;
374
375 return 0;
376}
377
378static ssize_t sdp_svc_search_attr_get(struct bt_l2cap_sdp_state_s *sdp,
379 uint8_t *rsp, const uint8_t *req, ssize_t len)
380{
381 ssize_t seqlen;
382 int i, j, start, end, max;
383 struct sdp_service_record_s *record;
384 uint8_t *lst;
385
386 /* Perform the search */
387 for (i = 0; i < sdp->services; i ++) {
388 sdp->service_list[i].match = 0;
389 for (j = 0; j < sdp->service_list[i].attributes; j ++)
390 sdp->service_list[i].attribute_list[j].match = 0;
391 }
392
393 if (len < 1)
394 return -SDP_INVALID_SYNTAX;
395 if ((*req & ~SDP_DSIZE_MASK) == SDP_DTYPE_SEQ) {
396 seqlen = sdp_datalen(&req, &len);
397 if (seqlen < 3 || len < seqlen)
398 return -SDP_INVALID_SYNTAX;
399 len -= seqlen;
400
401 while (seqlen)
402 if (sdp_svc_match(sdp, &req, &seqlen))
403 return -SDP_INVALID_SYNTAX;
374ec066
PB		 404 } else {
405 if (sdp_svc_match(sdp, &req, &len)) {
406 return -SDP_INVALID_SYNTAX;
407 }
408 }
4d2d181c
AZ		 409
410 if (len < 3)
411 return -SDP_INVALID_SYNTAX;
412 max = (req[0] << 8) | req[1];
413 req += 2;
414 len -= 2;
415 if (max < 0x0007)
416 return -SDP_INVALID_SYNTAX;
417
418 if ((*req & ~SDP_DSIZE_MASK) == SDP_DTYPE_SEQ) {
419 seqlen = sdp_datalen(&req, &len);
420 if (seqlen < 3 || len < seqlen)
421 return -SDP_INVALID_SYNTAX;
422 len -= seqlen;
423
424 while (seqlen)
425 if (sdp_svc_attr_match(sdp, &req, &seqlen))
426 return -SDP_INVALID_SYNTAX;
374ec066
PB		 427 } else {
428 if (sdp_svc_attr_match(sdp, &req, &len)) {
429 return -SDP_INVALID_SYNTAX;
430 }
431 }
4d2d181c
AZ		 432
433 if (len < 1)
434 return -SDP_INVALID_SYNTAX;
435
436 if (*req) {
437 if (len <= sizeof(int))
438 return -SDP_INVALID_SYNTAX;
439 len -= sizeof(int);
440 memcpy(&start, req + 1, sizeof(int));
441 } else
442 start = 0;
443
444 if (len > 1)
445 return -SDP_INVALID_SYNTAX;
446
447 /* Output the results */
448 /* This assumes empty attribute lists are never to be returned even
449 * for matching Service Records. In practice this shouldn't happen
450 * as the requestor will usually include the always present
451 * ServiceRecordHandle AttributeID in AttributeIDList. */
452 lst = rsp + 2;
453 max = MIN(max, MAX_RSP_PARAM_SIZE);
454 len = 3 - start;
455 end = 0;
456 for (i = 0; i < sdp->services; i ++)
457 if ((record = &sdp->service_list[i])->match) {
458 len += 3;
459 seqlen = len;
460 for (j = 0; j < record->attributes; j ++)
461 if (record->attribute_list[j].match) {
462 if (len >= 0)
463 if (len + record->attribute_list[j].len < max) {
464 memcpy(lst + len, record->attribute_list[j].pair,
465 record->attribute_list[j].len);
466 end = len + record->attribute_list[j].len;
467 }
468 len += record->attribute_list[j].len;
469 }
470 if (seqlen == len)
471 len -= 3;
472 else if (seqlen >= 3 && seqlen < max) {
473 lst[seqlen - 3] = SDP_DTYPE_SEQ | SDP_DSIZE_NEXT2;
474 lst[seqlen - 2] = (len - seqlen) >> 8;
475 lst[seqlen - 1] = (len - seqlen) & 0xff;
476 }
477 }
478 if (len == 3 - start)
479 len -= 3;
480 else if (0 >= start) {
481 lst[0] = SDP_DTYPE_SEQ | SDP_DSIZE_NEXT2;
482 lst[1] = (len + start - 3) >> 8;
483 lst[2] = (len + start - 3) & 0xff;
484 }
485
486 rsp[0] = end >> 8;
487 rsp[1] = end & 0xff;
488
489 if (end < len) {
490 len = end + start;
491 lst[end ++] = sizeof(int);
492 memcpy(lst + end, &len, sizeof(int));
493 end += sizeof(int);
494 } else
495 lst[end ++] = 0;
496
497 return end + 2;
498}
499
500static void bt_l2cap_sdp_sdu_in(void *opaque, const uint8_t *data, int len)
501{
502 struct bt_l2cap_sdp_state_s *sdp = opaque;
503 enum bt_sdp_cmd pdu_id;
504 uint8_t rsp[MAX_PDU_OUT_SIZE - PDU_HEADER_SIZE], *sdu_out;
505 int transaction_id, plen;
506 int err = 0;
507 int rsp_len = 0;
508
509 if (len < 5) {
bf937a79 510 error_report("%s: short SDP PDU (%iB).", __func__, len);
4d2d181c
AZ		 511 return;
512 }
513
514 pdu_id = *data ++;
515 transaction_id = (data[0] << 8) | data[1];
516 plen = (data[2] << 8) | data[3];
517 data += 4;
518 len -= 5;
519
520 if (len != plen) {
bf937a79 521 error_report("%s: wrong SDP PDU length (%iB != %iB).",
a89f364a 522 __func__, plen, len);
4d2d181c
AZ		 523 err = SDP_INVALID_PDU_SIZE;
524 goto respond;
525 }
526
527 switch (pdu_id) {
528 case SDP_SVC_SEARCH_REQ:
529 rsp_len = sdp_svc_search(sdp, rsp, data, len);
530 pdu_id = SDP_SVC_SEARCH_RSP;
531 break;
532
533 case SDP_SVC_ATTR_REQ:
534 rsp_len = sdp_attr_get(sdp, rsp, data, len);
535 pdu_id = SDP_SVC_ATTR_RSP;
536 break;
537
538 case SDP_SVC_SEARCH_ATTR_REQ:
539 rsp_len = sdp_svc_search_attr_get(sdp, rsp, data, len);
540 pdu_id = SDP_SVC_SEARCH_ATTR_RSP;
541 break;
542
543 case SDP_ERROR_RSP:
544 case SDP_SVC_ATTR_RSP:
545 case SDP_SVC_SEARCH_RSP:
546 case SDP_SVC_SEARCH_ATTR_RSP:
547 default:
bf937a79 548 error_report("%s: unexpected SDP PDU ID %02x.",
a89f364a 549 __func__, pdu_id);
4d2d181c
AZ		 550 err = SDP_INVALID_SYNTAX;
551 break;
552 }
553
554 if (rsp_len < 0) {
555 err = -rsp_len;
556 rsp_len = 0;
557 }
558
559respond:
560 if (err) {
561 pdu_id = SDP_ERROR_RSP;
562 rsp[rsp_len ++] = err >> 8;
563 rsp[rsp_len ++] = err & 0xff;
564 }
565
566 sdu_out = sdp->channel->sdu_out(sdp->channel, rsp_len + PDU_HEADER_SIZE);
567
568 sdu_out[0] = pdu_id;
569 sdu_out[1] = transaction_id >> 8;
570 sdu_out[2] = transaction_id & 0xff;
571 sdu_out[3] = rsp_len >> 8;
572 sdu_out[4] = rsp_len & 0xff;
573 memcpy(sdu_out + PDU_HEADER_SIZE, rsp, rsp_len);
574
575 sdp->channel->sdu_submit(sdp->channel);
576}
577
578static void bt_l2cap_sdp_close_ch(void *opaque)
579{
580 struct bt_l2cap_sdp_state_s *sdp = opaque;
581 int i;
582
583 for (i = 0; i < sdp->services; i ++) {
393c13b9 584 g_free(sdp->service_list[i].attribute_list[0].pair);
7267c094
AL		 585 g_free(sdp->service_list[i].attribute_list);
586 g_free(sdp->service_list[i].uuid);
4d2d181c 587 }
7267c094
AL		 588 g_free(sdp->service_list);
589 g_free(sdp);
4d2d181c
AZ		 590}
591
592struct sdp_def_service_s {
593 uint16_t class_uuid;
594 struct sdp_def_attribute_s {
595 uint16_t id;
596 struct sdp_def_data_element_s {
597 uint8_t type;
598 union {
599 uint32_t uint;
600 const char *str;
601 struct sdp_def_data_element_s *list;
602 } value;
603 } data;
604 } attributes[];
605};
606
607/* Calculate a safe byte count to allocate that will store the given
608 * element, at the same time count elements of a UUID type. */
609static int sdp_attr_max_size(struct sdp_def_data_element_s *element,
610 int *uuids)
611{
612 int type = element->type & ~SDP_DSIZE_MASK;
613 int len;
614
615 if (type == SDP_DTYPE_UINT || type == SDP_DTYPE_UUID ||
616 type == SDP_DTYPE_BOOL) {
617 if (type == SDP_DTYPE_UUID)
618 (*uuids) ++;
619 return 1 + (1 << (element->type & SDP_DSIZE_MASK));
620 }
621
622 if (type == SDP_DTYPE_STRING || type == SDP_DTYPE_URL) {
623 if (element->type & SDP_DSIZE_MASK) {
624 for (len = 0; element->value.str[len] |
625 element->value.str[len + 1]; len ++);
626 return len;
627 } else
628 return 2 + strlen(element->value.str);
629 }
630
631 if (type != SDP_DTYPE_SEQ)
632 exit(-1);
633 len = 2;
634 element = element->value.list;
635 while (element->type)
636 len += sdp_attr_max_size(element ++, uuids);
637 if (len > 255)
638 exit (-1);
639
640 return len;
641}
642
643static int sdp_attr_write(uint8_t *data,
644 struct sdp_def_data_element_s *element, int **uuid)
645{
646 int type = element->type & ~SDP_DSIZE_MASK;
647 int len = 0;
648
649 if (type == SDP_DTYPE_UINT || type == SDP_DTYPE_BOOL) {
650 data[len ++] = element->type;
651 if ((element->type & SDP_DSIZE_MASK) == SDP_DSIZE_1)
652 data[len ++] = (element->value.uint >> 0) & 0xff;
653 else if ((element->type & SDP_DSIZE_MASK) == SDP_DSIZE_2) {
654 data[len ++] = (element->value.uint >> 8) & 0xff;
655 data[len ++] = (element->value.uint >> 0) & 0xff;
656 } else if ((element->type & SDP_DSIZE_MASK) == SDP_DSIZE_4) {
657 data[len ++] = (element->value.uint >> 24) & 0xff;
658 data[len ++] = (element->value.uint >> 16) & 0xff;
659 data[len ++] = (element->value.uint >> 8) & 0xff;
660 data[len ++] = (element->value.uint >> 0) & 0xff;
661 }
662
663 return len;
664 }
665
666 if (type == SDP_DTYPE_UUID) {
667 *(*uuid) ++ = element->value.uint;
668
669 data[len ++] = element->type;
670 data[len ++] = (element->value.uint >> 24) & 0xff;
671 data[len ++] = (element->value.uint >> 16) & 0xff;
672 data[len ++] = (element->value.uint >> 8) & 0xff;
673 data[len ++] = (element->value.uint >> 0) & 0xff;
674 memcpy(data + len, bt_base_uuid, 12);
675
676 return len + 12;
677 }
678
679 data[0] = type | SDP_DSIZE_NEXT1;
680 if (type == SDP_DTYPE_STRING || type == SDP_DTYPE_URL) {
681 if (element->type & SDP_DSIZE_MASK)
682 for (len = 0; element->value.str[len] |
683 element->value.str[len + 1]; len ++);
684 else
685 len = strlen(element->value.str);
686 memcpy(data + 2, element->value.str, data[1] = len);
687
688 return len + 2;
689 }
690
691 len = 2;
692 element = element->value.list;
693 while (element->type)
694 len += sdp_attr_write(data + len, element ++, uuid);
695 data[1] = len - 2;
696
697 return len;
698}
699
700static int sdp_attributeid_compare(const struct sdp_service_attribute_s *a,
701 const struct sdp_service_attribute_s *b)
702{
703 return (int) b->attribute_id - a->attribute_id;
704}
705
706static int sdp_uuid_compare(const int *a, const int *b)
707{
708 return *a - *b;
709}
710
711static void sdp_service_record_build(struct sdp_service_record_s *record,
712 struct sdp_def_service_s *def, int handle)
713{
714 int len = 0;
715 uint8_t *data;
716 int *uuid;
717
718 record->uuids = 0;
719 while (def->attributes[record->attributes].data.type) {
720 len += 3;
721 len += sdp_attr_max_size(&def->attributes[record->attributes ++].data,
722 &record->uuids);
723 }
393c13b9
PB		 724
725 assert(len > 0);
588ef9d4 726 record->uuids = pow2ceil(record->uuids);
4d2d181c 727 record->attribute_list =
7267c094 728 g_malloc0(record->attributes * sizeof(*record->attribute_list));
4d2d181c 729 record->uuid =
7267c094
AL		 730 g_malloc0(record->uuids * sizeof(*record->uuid));
731 data = g_malloc(len);
4d2d181c
AZ		 732
733 record->attributes = 0;
734 uuid = record->uuid;
735 while (def->attributes[record->attributes].data.type) {
393c13b9 736 int attribute_id = def->attributes[record->attributes].id;
4d2d181c 737 record->attribute_list[record->attributes].pair = data;
393c13b9 738 record->attribute_list[record->attributes].attribute_id = attribute_id;
4d2d181c
AZ		 739
740 len = 0;
741 data[len ++] = SDP_DTYPE_UINT | SDP_DSIZE_2;
393c13b9
PB		 742 data[len ++] = attribute_id >> 8;
743 data[len ++] = attribute_id & 0xff;
4d2d181c
AZ		 744 len += sdp_attr_write(data + len,
745 &def->attributes[record->attributes].data, &uuid);
746
747 /* Special case: assign a ServiceRecordHandle in sequence */
748 if (def->attributes[record->attributes].id == SDP_ATTR_RECORD_HANDLE)
749 def->attributes[record->attributes].data.value.uint = handle;
750 /* Note: we could also assign a ServiceDescription based on
751 * sdp->device.device->lmp_name. */
752
753 record->attribute_list[record->attributes ++].len = len;
754 data += len;
755 }
756
393c13b9
PB		 757 /* Sort the attribute list by the AttributeID. The first must be
758 * SDP_ATTR_RECORD_HANDLE so that bt_l2cap_sdp_close_ch can free
759 * the buffer.
760 */
4d2d181c
AZ		 761 qsort(record->attribute_list, record->attributes,
762 sizeof(*record->attribute_list),
763 (void *) sdp_attributeid_compare);
393c13b9
PB		 764 assert(record->attribute_list[0].pair == data);
765
4d2d181c
AZ		 766 /* Sort the searchable UUIDs list for bisection */
767 qsort(record->uuid, record->uuids,
768 sizeof(*record->uuid),
769 (void *) sdp_uuid_compare);
770}
771
772static void sdp_service_db_build(struct bt_l2cap_sdp_state_s *sdp,
773 struct sdp_def_service_s **service)
774{
775 sdp->services = 0;
776 while (service[sdp->services])
777 sdp->services ++;
778 sdp->service_list =
7267c094 779 g_malloc0(sdp->services * sizeof(*sdp->service_list));
4d2d181c
AZ		 780
781 sdp->services = 0;
782 while (*service) {
783 sdp_service_record_build(&sdp->service_list[sdp->services],
784 *service, sdp->services);
785 service ++;
786 sdp->services ++;
787 }
788}
789
790#define LAST { .type = 0 }
791#define SERVICE(name, attrs) \
792 static struct sdp_def_service_s glue(glue(sdp_service_, name), _s) = { \
793 .attributes = { attrs { .data = LAST } }, \
794 };
795#define ATTRIBUTE(attrid, val) { .id = glue(SDP_ATTR_, attrid), .data = val },
796#define UINT8(val) { \
797 .type = SDP_DTYPE_UINT | SDP_DSIZE_1, \
798 .value.uint = val, \
799 },
800#define UINT16(val) { \
801 .type = SDP_DTYPE_UINT | SDP_DSIZE_2, \
802 .value.uint = val, \
803 },
804#define UINT32(val) { \
805 .type = SDP_DTYPE_UINT | SDP_DSIZE_4, \
806 .value.uint = val, \
807 },
808#define UUID128(val) { \
809 .type = SDP_DTYPE_UUID | SDP_DSIZE_16, \
810 .value.uint = val, \
811 },
ff753bb9 812#define SDP_TRUE { \
4d2d181c
AZ		 813 .type = SDP_DTYPE_BOOL | SDP_DSIZE_1, \
814 .value.uint = 1, \
815 },
ff753bb9 816#define SDP_FALSE { \
4d2d181c
AZ		 817 .type = SDP_DTYPE_BOOL | SDP_DSIZE_1, \
818 .value.uint = 0, \
819 },
820#define STRING(val) { \
821 .type = SDP_DTYPE_STRING, \
822 .value.str = val, \
823 },
824#define ARRAY(...) { \
825 .type = SDP_DTYPE_STRING | SDP_DSIZE_2, \
826 .value.str = (char []) { __VA_ARGS__, 0, 0 }, \
827 },
828#define URL(val) { \
829 .type = SDP_DTYPE_URL, \
830 .value.str = val, \
831 },
832#if 1
833#define LIST(val) { \
834 .type = SDP_DTYPE_SEQ, \
835 .value.list = (struct sdp_def_data_element_s []) { val LAST }, \
836 },
837#endif
838
839/* Try to keep each single attribute below MAX_PDU_OUT_SIZE bytes
840 * in resulting SDP data representation size. */
841
842SERVICE(hid,
843 ATTRIBUTE(RECORD_HANDLE, UINT32(0)) /* Filled in later */
844 ATTRIBUTE(SVCLASS_ID_LIST, LIST(UUID128(HID_SVCLASS_ID)))
845 ATTRIBUTE(RECORD_STATE, UINT32(1))
846 ATTRIBUTE(PROTO_DESC_LIST, LIST(
847 LIST(UUID128(L2CAP_UUID) UINT16(BT_PSM_HID_CTRL))
848 LIST(UUID128(HIDP_UUID))
849 ))
850 ATTRIBUTE(BROWSE_GRP_LIST, LIST(UUID128(0x1002)))
851 ATTRIBUTE(LANG_BASE_ATTR_ID_LIST, LIST(
852 UINT16(0x656e) UINT16(0x006a) UINT16(0x0100)
853 ))
854 ATTRIBUTE(PFILE_DESC_LIST, LIST(
855 LIST(UUID128(HID_PROFILE_ID) UINT16(0x0100))
856 ))
857 ATTRIBUTE(DOC_URL, URL("http://bellard.org/qemu/user-doc.html"))
858 ATTRIBUTE(SVCNAME_PRIMARY, STRING("QEMU Bluetooth HID"))
859 ATTRIBUTE(SVCDESC_PRIMARY, STRING("QEMU Keyboard/Mouse"))
93bfef4c 860 ATTRIBUTE(SVCPROV_PRIMARY, STRING("QEMU"))
4d2d181c
AZ		 861
862 /* Profile specific */
863 ATTRIBUTE(DEVICE_RELEASE_NUMBER, UINT16(0x0091)) /* Deprecated, remove */
864 ATTRIBUTE(PARSER_VERSION, UINT16(0x0111))
865 /* TODO: extract from l2cap_device->device.class[0] */
866 ATTRIBUTE(DEVICE_SUBCLASS, UINT8(0x40))
867 ATTRIBUTE(COUNTRY_CODE, UINT8(0x15))
ff753bb9
JS		 868 ATTRIBUTE(VIRTUAL_CABLE, SDP_TRUE)
869 ATTRIBUTE(RECONNECT_INITIATE, SDP_FALSE)
4d2d181c
AZ		 870 /* TODO: extract from hid->usbdev->report_desc */
871 ATTRIBUTE(DESCRIPTOR_LIST, LIST(
872 LIST(UINT8(0x22) ARRAY(
873 0x05, 0x01, /* Usage Page (Generic Desktop) */
874 0x09, 0x06, /* Usage (Keyboard) */
875 0xa1, 0x01, /* Collection (Application) */
876 0x75, 0x01, /* Report Size (1) */
877 0x95, 0x08, /* Report Count (8) */
878 0x05, 0x07, /* Usage Page (Key Codes) */
879 0x19, 0xe0, /* Usage Minimum (224) */
880 0x29, 0xe7, /* Usage Maximum (231) */
881 0x15, 0x00, /* Logical Minimum (0) */
882 0x25, 0x01, /* Logical Maximum (1) */
883 0x81, 0x02, /* Input (Data, Variable, Absolute) */
884 0x95, 0x01, /* Report Count (1) */
885 0x75, 0x08, /* Report Size (8) */
886 0x81, 0x01, /* Input (Constant) */
887 0x95, 0x05, /* Report Count (5) */
888 0x75, 0x01, /* Report Size (1) */
889 0x05, 0x08, /* Usage Page (LEDs) */
890 0x19, 0x01, /* Usage Minimum (1) */
891 0x29, 0x05, /* Usage Maximum (5) */
892 0x91, 0x02, /* Output (Data, Variable, Absolute) */
893 0x95, 0x01, /* Report Count (1) */
894 0x75, 0x03, /* Report Size (3) */
895 0x91, 0x01, /* Output (Constant) */
896 0x95, 0x06, /* Report Count (6) */
897 0x75, 0x08, /* Report Size (8) */
898 0x15, 0x00, /* Logical Minimum (0) */
899 0x25, 0xff, /* Logical Maximum (255) */
900 0x05, 0x07, /* Usage Page (Key Codes) */
901 0x19, 0x00, /* Usage Minimum (0) */
902 0x29, 0xff, /* Usage Maximum (255) */
903 0x81, 0x00, /* Input (Data, Array) */
904 0xc0 /* End Collection */
905 ))))
906 ATTRIBUTE(LANG_ID_BASE_LIST, LIST(
907 LIST(UINT16(0x0409) UINT16(0x0100))
908 ))
ff753bb9
JS		 909 ATTRIBUTE(SDP_DISABLE, SDP_FALSE)
910 ATTRIBUTE(BATTERY_POWER, SDP_TRUE)
911 ATTRIBUTE(REMOTE_WAKEUP, SDP_TRUE)
912 ATTRIBUTE(BOOT_DEVICE, SDP_TRUE) /* XXX: untested */
4d2d181c 913 ATTRIBUTE(SUPERVISION_TIMEOUT, UINT16(0x0c80))
ff753bb9 914 ATTRIBUTE(NORMALLY_CONNECTABLE, SDP_TRUE)
4d2d181c
AZ		 915 ATTRIBUTE(PROFILE_VERSION, UINT16(0x0100))
916)
917
918SERVICE(sdp,
919 ATTRIBUTE(RECORD_HANDLE, UINT32(0)) /* Filled in later */
920 ATTRIBUTE(SVCLASS_ID_LIST, LIST(UUID128(SDP_SERVER_SVCLASS_ID)))
921 ATTRIBUTE(RECORD_STATE, UINT32(1))
922 ATTRIBUTE(PROTO_DESC_LIST, LIST(
923 LIST(UUID128(L2CAP_UUID) UINT16(BT_PSM_SDP))
924 LIST(UUID128(SDP_UUID))
925 ))
926 ATTRIBUTE(BROWSE_GRP_LIST, LIST(UUID128(0x1002)))
927 ATTRIBUTE(LANG_BASE_ATTR_ID_LIST, LIST(
928 UINT16(0x656e) UINT16(0x006a) UINT16(0x0100)
929 ))
930 ATTRIBUTE(PFILE_DESC_LIST, LIST(
931 LIST(UUID128(SDP_SERVER_PROFILE_ID) UINT16(0x0100))
932 ))
933 ATTRIBUTE(DOC_URL, URL("http://bellard.org/qemu/user-doc.html"))
93bfef4c 934 ATTRIBUTE(SVCPROV_PRIMARY, STRING("QEMU"))
4d2d181c
AZ		 935
936 /* Profile specific */
937 ATTRIBUTE(VERSION_NUM_LIST, LIST(UINT16(0x0100)))
938 ATTRIBUTE(SVCDB_STATE , UINT32(1))
939)
940
941SERVICE(pnp,
942 ATTRIBUTE(RECORD_HANDLE, UINT32(0)) /* Filled in later */
943 ATTRIBUTE(SVCLASS_ID_LIST, LIST(UUID128(PNP_INFO_SVCLASS_ID)))
944 ATTRIBUTE(RECORD_STATE, UINT32(1))
945 ATTRIBUTE(PROTO_DESC_LIST, LIST(
946 LIST(UUID128(L2CAP_UUID) UINT16(BT_PSM_SDP))
947 LIST(UUID128(SDP_UUID))
948 ))
949 ATTRIBUTE(BROWSE_GRP_LIST, LIST(UUID128(0x1002)))
950 ATTRIBUTE(LANG_BASE_ATTR_ID_LIST, LIST(
951 UINT16(0x656e) UINT16(0x006a) UINT16(0x0100)
952 ))
953 ATTRIBUTE(PFILE_DESC_LIST, LIST(
954 LIST(UUID128(PNP_INFO_PROFILE_ID) UINT16(0x0100))
955 ))
956 ATTRIBUTE(DOC_URL, URL("http://bellard.org/qemu/user-doc.html"))
93bfef4c 957 ATTRIBUTE(SVCPROV_PRIMARY, STRING("QEMU"))
4d2d181c
AZ		 958
959 /* Profile specific */
960 ATTRIBUTE(SPECIFICATION_ID, UINT16(0x0100))
961 ATTRIBUTE(VERSION, UINT16(0x0100))
ff753bb9 962 ATTRIBUTE(PRIMARY_RECORD, SDP_TRUE)
4d2d181c
AZ		 963)
964
965static int bt_l2cap_sdp_new_ch(struct bt_l2cap_device_s *dev,
966 struct bt_l2cap_conn_params_s *params)
967{
7267c094 968 struct bt_l2cap_sdp_state_s *sdp = g_malloc0(sizeof(*sdp));
4d2d181c
AZ		 969 struct sdp_def_service_s *services[] = {
970 &sdp_service_sdp_s,
971 &sdp_service_hid_s,
972 &sdp_service_pnp_s,
511d2b14 973 NULL,
4d2d181c
AZ		 974 };
975
976 sdp->channel = params;
977 sdp->channel->opaque = sdp;
978 sdp->channel->close = bt_l2cap_sdp_close_ch;
979 sdp->channel->sdu_in = bt_l2cap_sdp_sdu_in;
980
981 sdp_service_db_build(sdp, services);
982
983 return 0;
984}
985
986void bt_l2cap_sdp_init(struct bt_l2cap_device_s *dev)
987{
988 bt_l2cap_psm_register(dev, BT_PSM_SDP,
989 MAX_PDU_OUT_SIZE, bt_l2cap_sdp_new_ch);
990}
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