1 | /*
|
---|
2 | * Copyright (C) 2009-2013 by Matthias Ringwald
|
---|
3 | *
|
---|
4 | * Redistribution and use in source and binary forms, with or without
|
---|
5 | * modification, are permitted provided that the following conditions
|
---|
6 | * are met:
|
---|
7 | *
|
---|
8 | * 1. Redistributions of source code must retain the above copyright
|
---|
9 | * notice, this list of conditions and the following disclaimer.
|
---|
10 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
11 | * notice, this list of conditions and the following disclaimer in the
|
---|
12 | * documentation and/or other materials provided with the distribution.
|
---|
13 | * 3. Neither the name of the copyright holders nor the names of
|
---|
14 | * contributors may be used to endorse or promote products derived
|
---|
15 | * from this software without specific prior written permission.
|
---|
16 | * 4. Any redistribution, use, or modification is done solely for
|
---|
17 | * personal benefit and not for any commercial purpose or for
|
---|
18 | * monetary gain.
|
---|
19 | *
|
---|
20 | * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
|
---|
21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
---|
22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
---|
23 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
|
---|
24 | * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
---|
25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
---|
26 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
---|
27 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
---|
28 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
---|
29 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
---|
30 | * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
31 | * SUCH DAMAGE.
|
---|
32 | *
|
---|
33 | * Please inquire about commercial licensing options at btstack@ringwald.ch
|
---|
34 | *
|
---|
35 | */
|
---|
36 |
|
---|
37 | /*
|
---|
38 | * sdp_client.c
|
---|
39 | */
|
---|
40 |
|
---|
41 | #include "btstack-config.h"
|
---|
42 | #include "sdp_client.h"
|
---|
43 |
|
---|
44 | #include <btstack/hci_cmds.h>
|
---|
45 |
|
---|
46 | #include "l2cap.h"
|
---|
47 | #include "sdp_parser.h"
|
---|
48 | #include "sdp.h"
|
---|
49 | #include "debug.h"
|
---|
50 |
|
---|
51 | typedef enum {
|
---|
52 | INIT, W4_CONNECT, W2_SEND, W4_RESPONSE, QUERY_COMPLETE
|
---|
53 | } sdp_client_state_t;
|
---|
54 |
|
---|
55 |
|
---|
56 | void sdp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
|
---|
57 |
|
---|
58 | static uint16_t setup_service_search_attribute_request(uint8_t * data);
|
---|
59 |
|
---|
60 | #ifdef HAVE_SDP_EXTRA_QUERIES
|
---|
61 | static uint16_t setup_service_search_request(uint8_t * data);
|
---|
62 | static uint16_t setup_service_attribute_request(uint8_t * data);
|
---|
63 | static void parse_service_search_response(uint8_t* packet);
|
---|
64 | static void parse_service_attribute_response(uint8_t* packet);
|
---|
65 | static uint32_t serviceRecordHandle;
|
---|
66 | #endif
|
---|
67 |
|
---|
68 | // SDP Client Query
|
---|
69 | static uint16_t mtu;
|
---|
70 | static uint16_t sdp_cid = 0x40;
|
---|
71 | static uint8_t * serviceSearchPattern;
|
---|
72 | static uint8_t * attributeIDList;
|
---|
73 | static uint16_t transactionID = 0;
|
---|
74 | static uint8_t continuationState[16];
|
---|
75 | static uint8_t continuationStateLen;
|
---|
76 | static sdp_client_state_t sdp_client_state = INIT;
|
---|
77 | static SDP_PDU_ID_t PDU_ID = SDP_Invalid;
|
---|
78 |
|
---|
79 | // TODO: inline if not needed (des(des))
|
---|
80 | void parse_attribute_lists(uint8_t* packet, uint16_t length){
|
---|
81 | sdp_parser_handle_chunk(packet, length);
|
---|
82 | }
|
---|
83 |
|
---|
84 | /* Queries the SDP service of the remote device given a service search pattern
|
---|
85 | and a list of attribute IDs. The remote data is handled by the SDP parser. The
|
---|
86 | SDP parser delivers attribute values and done event via a registered callback. */
|
---|
87 |
|
---|
88 | void sdp_client_query(bd_addr_t remote, uint8_t * des_serviceSearchPattern, uint8_t * des_attributeIDList){
|
---|
89 | serviceSearchPattern = des_serviceSearchPattern;
|
---|
90 | attributeIDList = des_attributeIDList;
|
---|
91 | continuationStateLen = 0;
|
---|
92 | PDU_ID = SDP_ServiceSearchAttributeResponse;
|
---|
93 |
|
---|
94 | sdp_client_state = W4_CONNECT;
|
---|
95 | l2cap_create_channel_internal(NULL, sdp_packet_handler, remote, PSM_SDP, l2cap_max_mtu());
|
---|
96 | }
|
---|
97 |
|
---|
98 | static int can_send_now(uint16_t channel){
|
---|
99 | if (sdp_client_state != W2_SEND) return 0;
|
---|
100 | if (!l2cap_can_send_packet_now(channel)) return 0;
|
---|
101 | return 1;
|
---|
102 | }
|
---|
103 |
|
---|
104 | static void send_request(uint16_t channel){
|
---|
105 | uint8_t * data;
|
---|
106 | uint16_t request_len;
|
---|
107 | int err;
|
---|
108 |
|
---|
109 | l2cap_reserve_packet_buffer();
|
---|
110 | data = l2cap_get_outgoing_buffer();
|
---|
111 | request_len = 0;
|
---|
112 |
|
---|
113 | switch (PDU_ID){
|
---|
114 | #ifdef HAVE_SDP_EXTRA_QUERIES
|
---|
115 | case SDP_ServiceSearchResponse:
|
---|
116 | request_len = setup_service_search_request(data);
|
---|
117 | break;
|
---|
118 | case SDP_ServiceAttributeResponse:
|
---|
119 | request_len = setup_service_attribute_request(data);
|
---|
120 | break;
|
---|
121 | #endif
|
---|
122 | case SDP_ServiceSearchAttributeResponse:
|
---|
123 | request_len = setup_service_search_attribute_request(data);
|
---|
124 | break;
|
---|
125 | default:
|
---|
126 | log_error("SDP Client send_request :: PDU ID invalid. %u", PDU_ID);
|
---|
127 | return;
|
---|
128 | }
|
---|
129 |
|
---|
130 | // prevent re-entrance
|
---|
131 | sdp_client_state = W4_RESPONSE;
|
---|
132 | err = l2cap_send_prepared(channel, request_len);
|
---|
133 | // l2cap_send_prepared shouldn't have failed as l2ap_can_send_packet_now() was true
|
---|
134 | switch (err){
|
---|
135 | case 0:
|
---|
136 | log_debug("l2cap_send_internal() -> OK");
|
---|
137 | PDU_ID = SDP_Invalid;
|
---|
138 | break;
|
---|
139 | case BTSTACK_ACL_BUFFERS_FULL:
|
---|
140 | sdp_client_state = W2_SEND;
|
---|
141 | log_info("l2cap_send_internal() ->BTSTACK_ACL_BUFFERS_FULL");
|
---|
142 | break;
|
---|
143 | default:
|
---|
144 | sdp_client_state = W2_SEND;
|
---|
145 | log_error("l2cap_send_internal() -> err %d", err);
|
---|
146 | break;
|
---|
147 | }
|
---|
148 | }
|
---|
149 |
|
---|
150 |
|
---|
151 | static void parse_service_search_attribute_response(uint8_t* packet){
|
---|
152 | uint16_t offset = 3;
|
---|
153 | uint16_t parameterLength = big_endian_read_16(packet,offset);
|
---|
154 | uint16_t attributeListByteCount;
|
---|
155 | offset+=2;
|
---|
156 | // AttributeListByteCount <= mtu
|
---|
157 | attributeListByteCount = big_endian_read_16(packet,offset);
|
---|
158 | offset+=2;
|
---|
159 |
|
---|
160 | if (attributeListByteCount > mtu){
|
---|
161 | log_error("Error parsing ServiceSearchAttributeResponse: Number of bytes in found attribute list is larger then the MaximumAttributeByteCount.");
|
---|
162 | return;
|
---|
163 | }
|
---|
164 |
|
---|
165 | // AttributeLists
|
---|
166 | parse_attribute_lists(packet+offset, attributeListByteCount);
|
---|
167 | offset+=attributeListByteCount;
|
---|
168 |
|
---|
169 | continuationStateLen = packet[offset];
|
---|
170 | offset++;
|
---|
171 |
|
---|
172 | if (continuationStateLen > 16){
|
---|
173 | log_error("Error parsing ServiceSearchAttributeResponse: Number of bytes in continuation state exceedes 16.");
|
---|
174 | return;
|
---|
175 | }
|
---|
176 | memcpy(continuationState, packet+offset, continuationStateLen);
|
---|
177 | offset+=continuationStateLen;
|
---|
178 |
|
---|
179 | if (parameterLength != offset - 5){
|
---|
180 | log_error("Error parsing ServiceSearchAttributeResponse: wrong size of parameters, number of expected bytes%u, actual number %u.", parameterLength, offset);
|
---|
181 | }
|
---|
182 | }
|
---|
183 |
|
---|
184 | void sdp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
|
---|
185 | // uint16_t handle;
|
---|
186 | if (packet_type == L2CAP_DATA_PACKET){
|
---|
187 | uint16_t responseTransactionID = big_endian_read_16(packet,1);
|
---|
188 | if ( responseTransactionID != transactionID){
|
---|
189 | log_error("Missmatching transaction ID, expected %u, found %u.", transactionID, responseTransactionID);
|
---|
190 | return;
|
---|
191 | }
|
---|
192 |
|
---|
193 | if (packet[0] != SDP_ServiceSearchAttributeResponse
|
---|
194 | && packet[0] != SDP_ServiceSearchResponse
|
---|
195 | && packet[0] != SDP_ServiceAttributeResponse){
|
---|
196 | log_error("Not a valid PDU ID, expected %u, %u or %u, found %u.", SDP_ServiceSearchResponse,
|
---|
197 | SDP_ServiceAttributeResponse, SDP_ServiceSearchAttributeResponse, packet[0]);
|
---|
198 | return;
|
---|
199 | }
|
---|
200 |
|
---|
201 | PDU_ID = packet[0];
|
---|
202 | log_info("SDP Client :: PDU ID. %u ,%u", PDU_ID, packet[0]);
|
---|
203 | switch (PDU_ID){
|
---|
204 | #ifdef HAVE_SDP_EXTRA_QUERIES
|
---|
205 | case SDP_ServiceSearchResponse:
|
---|
206 | parse_service_search_response(packet);
|
---|
207 | break;
|
---|
208 | case SDP_ServiceAttributeResponse:
|
---|
209 | parse_service_attribute_response(packet);
|
---|
210 | break;
|
---|
211 | #endif
|
---|
212 | case SDP_ServiceSearchAttributeResponse:
|
---|
213 | parse_service_search_attribute_response(packet);
|
---|
214 | break;
|
---|
215 | default:
|
---|
216 | log_error("SDP Client :: PDU ID invalid. %u ,%u", PDU_ID, packet[0]);
|
---|
217 | return;
|
---|
218 | }
|
---|
219 |
|
---|
220 | // continuation set or DONE?
|
---|
221 | if (continuationStateLen == 0){
|
---|
222 | log_info("SDP Client Query DONE! ");
|
---|
223 | sdp_client_state = QUERY_COMPLETE;
|
---|
224 | l2cap_disconnect_internal(sdp_cid, 0);
|
---|
225 | // sdp_parser_handle_done(0);
|
---|
226 | return;
|
---|
227 | }
|
---|
228 | // prepare next request and send
|
---|
229 | sdp_client_state = W2_SEND;
|
---|
230 | if (can_send_now(sdp_cid)) send_request(sdp_cid);
|
---|
231 | return;
|
---|
232 | }
|
---|
233 |
|
---|
234 | if (packet_type != HCI_EVENT_PACKET) return;
|
---|
235 |
|
---|
236 | switch(packet[0]){
|
---|
237 | case L2CAP_EVENT_TIMEOUT_CHECK:
|
---|
238 | log_info("sdp client: L2CAP_EVENT_TIMEOUT_CHECK");
|
---|
239 | break;
|
---|
240 | case L2CAP_EVENT_CHANNEL_OPENED:
|
---|
241 | if (sdp_client_state != W4_CONNECT) break;
|
---|
242 | // data: event (8), len(8), status (8), address(48), handle (16), psm (16), local_cid(16), remote_cid (16), local_mtu(16), remote_mtu(16)
|
---|
243 | if (packet[2]) {
|
---|
244 | log_error("SDP Client Connection failed.");
|
---|
245 | sdp_parser_handle_done(packet[2]);
|
---|
246 | break;
|
---|
247 | }
|
---|
248 | sdp_cid = channel;
|
---|
249 | mtu = little_endian_read_16(packet, 17);
|
---|
250 | // handle = little_endian_read_16(packet, 9);
|
---|
251 | log_info("SDP Client Connected, cid %x, mtu %u.", sdp_cid, mtu);
|
---|
252 |
|
---|
253 | sdp_client_state = W2_SEND;
|
---|
254 | if (can_send_now(sdp_cid)) send_request(sdp_cid);
|
---|
255 |
|
---|
256 | break;
|
---|
257 | case L2CAP_EVENT_CREDITS:
|
---|
258 | case DAEMON_EVENT_HCI_PACKET_SENT:
|
---|
259 | if (can_send_now(sdp_cid)) send_request(sdp_cid);
|
---|
260 | break;
|
---|
261 | case L2CAP_EVENT_CHANNEL_CLOSED: {
|
---|
262 | uint8_t status;
|
---|
263 | if (sdp_cid != little_endian_read_16(packet, 2)) {
|
---|
264 | // log_info("Received L2CAP_EVENT_CHANNEL_CLOSED for cid %x, current cid %x\n", little_endian_read_16(packet, 2),sdp_cid);
|
---|
265 | break;
|
---|
266 | }
|
---|
267 | log_info("SDP Client disconnected.");
|
---|
268 | status = sdp_client_state == QUERY_COMPLETE ? 0 : SDP_QUERY_INCOMPLETE;
|
---|
269 | sdp_client_state = INIT;
|
---|
270 | sdp_parser_handle_done(status);
|
---|
271 | break;
|
---|
272 | }
|
---|
273 | default:
|
---|
274 | break;
|
---|
275 | }
|
---|
276 | }
|
---|
277 |
|
---|
278 |
|
---|
279 | static uint16_t setup_service_search_attribute_request(uint8_t * data){
|
---|
280 |
|
---|
281 | uint16_t offset = 0;
|
---|
282 | uint16_t serviceSearchPatternLen;
|
---|
283 | uint16_t attributeIDListLen;
|
---|
284 | transactionID++;
|
---|
285 | // uint8_t SDP_PDU_ID_t.SDP_ServiceSearchRequest;
|
---|
286 | data[offset++] = SDP_ServiceSearchAttributeRequest;
|
---|
287 | // uint16_t transactionID
|
---|
288 | net_store_16(data, offset, transactionID);
|
---|
289 | offset += 2;
|
---|
290 |
|
---|
291 | // param legnth
|
---|
292 | offset += 2;
|
---|
293 |
|
---|
294 | // parameters:
|
---|
295 | // ServiceSearchPattern - DES (min 1 UUID, max 12)
|
---|
296 | serviceSearchPatternLen = de_get_len(serviceSearchPattern);
|
---|
297 | memcpy(data + offset, serviceSearchPattern, serviceSearchPatternLen);
|
---|
298 | offset += serviceSearchPatternLen;
|
---|
299 |
|
---|
300 | // MaximumAttributeByteCount - uint16_t 0x0007 - 0xffff -> mtu
|
---|
301 | net_store_16(data, offset, mtu);
|
---|
302 | offset += 2;
|
---|
303 |
|
---|
304 | // AttibuteIDList
|
---|
305 | attributeIDListLen = de_get_len(attributeIDList);
|
---|
306 | memcpy(data + offset, attributeIDList, attributeIDListLen);
|
---|
307 | offset += attributeIDListLen;
|
---|
308 |
|
---|
309 | // ContinuationState - uint8_t number of cont. bytes N<=16
|
---|
310 | data[offset++] = continuationStateLen;
|
---|
311 | // - N-bytes previous response from server
|
---|
312 | memcpy(data + offset, continuationState, continuationStateLen);
|
---|
313 | offset += continuationStateLen;
|
---|
314 |
|
---|
315 | // uint16_t paramLength
|
---|
316 | net_store_16(data, 3, offset - 5);
|
---|
317 |
|
---|
318 | return offset;
|
---|
319 | }
|
---|
320 |
|
---|
321 | #ifdef HAVE_SDP_EXTRA_QUERIES
|
---|
322 | void parse_service_record_handle_list(uint8_t* packet, uint16_t total_count, uint16_t current_count){
|
---|
323 | sdp_parser_handle_service_search(packet, total_count, current_count);
|
---|
324 | }
|
---|
325 |
|
---|
326 | static uint16_t setup_service_search_request(uint8_t * data){
|
---|
327 | uint16_t offset = 0;
|
---|
328 | uint16_t serviceSearchPatternLen;
|
---|
329 | transactionID++;
|
---|
330 | // uint8_t SDP_PDU_ID_t.SDP_ServiceSearchRequest;
|
---|
331 | data[offset++] = SDP_ServiceSearchRequest;
|
---|
332 | // uint16_t transactionID
|
---|
333 | net_store_16(data, offset, transactionID);
|
---|
334 | offset += 2;
|
---|
335 |
|
---|
336 | // param legnth
|
---|
337 | offset += 2;
|
---|
338 |
|
---|
339 | // parameters:
|
---|
340 | // ServiceSearchPattern - DES (min 1 UUID, max 12)
|
---|
341 | serviceSearchPatternLen = de_get_len(serviceSearchPattern);
|
---|
342 | memcpy(data + offset, serviceSearchPattern, serviceSearchPatternLen);
|
---|
343 | offset += serviceSearchPatternLen;
|
---|
344 |
|
---|
345 | // MaximumAttributeByteCount - uint16_t 0x0007 - 0xffff -> mtu
|
---|
346 | net_store_16(data, offset, mtu);
|
---|
347 | offset += 2;
|
---|
348 |
|
---|
349 | // ContinuationState - uint8_t number of cont. bytes N<=16
|
---|
350 | data[offset++] = continuationStateLen;
|
---|
351 | // - N-bytes previous response from server
|
---|
352 | memcpy(data + offset, continuationState, continuationStateLen);
|
---|
353 | offset += continuationStateLen;
|
---|
354 |
|
---|
355 | // uint16_t paramLength
|
---|
356 | net_store_16(data, 3, offset - 5);
|
---|
357 |
|
---|
358 | return offset;
|
---|
359 | }
|
---|
360 |
|
---|
361 |
|
---|
362 | static uint16_t setup_service_attribute_request(uint8_t * data){
|
---|
363 |
|
---|
364 | uint16_t offset = 0;
|
---|
365 | uint16_t attributeIDListLen;
|
---|
366 | transactionID++;
|
---|
367 | // uint8_t SDP_PDU_ID_t.SDP_ServiceSearchRequest;
|
---|
368 | data[offset++] = SDP_ServiceAttributeRequest;
|
---|
369 | // uint16_t transactionID
|
---|
370 | net_store_16(data, offset, transactionID);
|
---|
371 | offset += 2;
|
---|
372 |
|
---|
373 | // param legnth
|
---|
374 | offset += 2;
|
---|
375 |
|
---|
376 | // parameters:
|
---|
377 | // ServiceRecordHandle
|
---|
378 | net_store_32(data, offset, serviceRecordHandle);
|
---|
379 | offset += 4;
|
---|
380 |
|
---|
381 | // MaximumAttributeByteCount - uint16_t 0x0007 - 0xffff -> mtu
|
---|
382 | net_store_16(data, offset, mtu);
|
---|
383 | offset += 2;
|
---|
384 |
|
---|
385 | // AttibuteIDList
|
---|
386 | attributeIDListLen = de_get_len(attributeIDList);
|
---|
387 | memcpy(data + offset, attributeIDList, attributeIDListLen);
|
---|
388 | offset += attributeIDListLen;
|
---|
389 |
|
---|
390 | // ContinuationState - uint8_t number of cont. bytes N<=16
|
---|
391 | data[offset++] = continuationStateLen;
|
---|
392 | // - N-bytes previous response from server
|
---|
393 | memcpy(data + offset, continuationState, continuationStateLen);
|
---|
394 | offset += continuationStateLen;
|
---|
395 |
|
---|
396 | // uint16_t paramLength
|
---|
397 | net_store_16(data, 3, offset - 5);
|
---|
398 |
|
---|
399 | return offset;
|
---|
400 | }
|
---|
401 |
|
---|
402 | static void parse_service_search_response(uint8_t* packet){
|
---|
403 | uint16_t offset = 3;
|
---|
404 | uint16_t parameterLength = big_endian_read_16(packet,offset);
|
---|
405 | uint16_t totalServiceRecordCount;
|
---|
406 | uint16_t currentServiceRecordCount;
|
---|
407 | offset+=2;
|
---|
408 |
|
---|
409 | totalServiceRecordCount = big_endian_read_16(packet,offset);
|
---|
410 | offset+=2;
|
---|
411 |
|
---|
412 | currentServiceRecordCount = big_endian_read_16(packet,offset);
|
---|
413 | offset+=2;
|
---|
414 | if (currentServiceRecordCount > totalServiceRecordCount){
|
---|
415 | log_error("CurrentServiceRecordCount is larger then TotalServiceRecordCount.");
|
---|
416 | return;
|
---|
417 | }
|
---|
418 |
|
---|
419 | parse_service_record_handle_list(packet+offset, totalServiceRecordCount, currentServiceRecordCount);
|
---|
420 | offset+=(currentServiceRecordCount * 4);
|
---|
421 |
|
---|
422 | continuationStateLen = packet[offset];
|
---|
423 | offset++;
|
---|
424 | if (continuationStateLen > 16){
|
---|
425 | log_error("Error parsing ServiceSearchResponse: Number of bytes in continuation state exceedes 16.");
|
---|
426 | return;
|
---|
427 | }
|
---|
428 | memcpy(continuationState, packet+offset, continuationStateLen);
|
---|
429 | offset+=continuationStateLen;
|
---|
430 |
|
---|
431 | if (parameterLength != offset - 5){
|
---|
432 | log_error("Error parsing ServiceSearchResponse: wrong size of parameters, number of expected bytes%u, actual number %u.", parameterLength, offset);
|
---|
433 | }
|
---|
434 | }
|
---|
435 |
|
---|
436 | static void parse_service_attribute_response(uint8_t* packet){
|
---|
437 | uint16_t offset = 3;
|
---|
438 | uint16_t parameterLength = big_endian_read_16(packet,offset);
|
---|
439 | uint16_t attributeListByteCount;
|
---|
440 | offset+=2;
|
---|
441 |
|
---|
442 | // AttributeListByteCount <= mtu
|
---|
443 | attributeListByteCount = big_endian_read_16(packet,offset);
|
---|
444 | offset+=2;
|
---|
445 |
|
---|
446 | if (attributeListByteCount > mtu){
|
---|
447 | log_error("Error parsing ServiceSearchAttributeResponse: Number of bytes in found attribute list is larger then the MaximumAttributeByteCount.");
|
---|
448 | return;
|
---|
449 | }
|
---|
450 |
|
---|
451 | // AttributeLists
|
---|
452 | parse_attribute_lists(packet+offset, attributeListByteCount);
|
---|
453 | offset+=attributeListByteCount;
|
---|
454 |
|
---|
455 | continuationStateLen = packet[offset];
|
---|
456 | offset++;
|
---|
457 |
|
---|
458 | if (continuationStateLen > 16){
|
---|
459 | log_error("Error parsing ServiceAttributeResponse: Number of bytes in continuation state exceedes 16.");
|
---|
460 | return;
|
---|
461 | }
|
---|
462 | memcpy(continuationState, packet+offset, continuationStateLen);
|
---|
463 | offset+=continuationStateLen;
|
---|
464 |
|
---|
465 | if (parameterLength != offset - 5){
|
---|
466 | log_error("Error parsing ServiceAttributeResponse: wrong size of parameters, number of expected bytes%u, actual number %u.", parameterLength, offset);
|
---|
467 | }
|
---|
468 | }
|
---|
469 |
|
---|
470 | void sdp_client_service_attribute_search(bd_addr_t remote, uint32_t search_serviceRecordHandle, uint8_t * des_attributeIDList){
|
---|
471 | serviceRecordHandle = search_serviceRecordHandle;
|
---|
472 | attributeIDList = des_attributeIDList;
|
---|
473 | continuationStateLen = 0;
|
---|
474 | PDU_ID = SDP_ServiceAttributeResponse;
|
---|
475 |
|
---|
476 | sdp_client_state = W4_CONNECT;
|
---|
477 | l2cap_create_channel_internal(NULL, sdp_packet_handler, remote, PSM_SDP, l2cap_max_mtu());
|
---|
478 | }
|
---|
479 |
|
---|
480 | void sdp_client_service_search(bd_addr_t remote, uint8_t * des_serviceSearchPattern){
|
---|
481 | serviceSearchPattern = des_serviceSearchPattern;
|
---|
482 | continuationStateLen = 0;
|
---|
483 | PDU_ID = SDP_ServiceSearchResponse;
|
---|
484 |
|
---|
485 | sdp_client_state = W4_CONNECT;
|
---|
486 | l2cap_create_channel_internal(NULL, sdp_packet_handler, remote, PSM_SDP, l2cap_max_mtu());
|
---|
487 | }
|
---|
488 | #endif
|
---|
489 |
|
---|