[352] | 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;
|
---|
[374] | 153 | uint16_t parameterLength = big_endian_read_16(packet,offset);
|
---|
[352] | 154 | uint16_t attributeListByteCount;
|
---|
| 155 | offset+=2;
|
---|
| 156 | // AttributeListByteCount <= mtu
|
---|
[374] | 157 | attributeListByteCount = big_endian_read_16(packet,offset);
|
---|
[352] | 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){
|
---|
[374] | 187 | uint16_t responseTransactionID = big_endian_read_16(packet,1);
|
---|
[352] | 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;
|
---|
[374] | 249 | mtu = little_endian_read_16(packet, 17);
|
---|
| 250 | // handle = little_endian_read_16(packet, 9);
|
---|
[352] | 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;
|
---|
[374] | 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);
|
---|
[352] | 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;
|
---|
[374] | 404 | uint16_t parameterLength = big_endian_read_16(packet,offset);
|
---|
[352] | 405 | uint16_t totalServiceRecordCount;
|
---|
| 406 | uint16_t currentServiceRecordCount;
|
---|
| 407 | offset+=2;
|
---|
| 408 |
|
---|
[374] | 409 | totalServiceRecordCount = big_endian_read_16(packet,offset);
|
---|
[352] | 410 | offset+=2;
|
---|
| 411 |
|
---|
[374] | 412 | currentServiceRecordCount = big_endian_read_16(packet,offset);
|
---|
[352] | 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;
|
---|
[374] | 438 | uint16_t parameterLength = big_endian_read_16(packet,offset);
|
---|
[352] | 439 | uint16_t attributeListByteCount;
|
---|
| 440 | offset+=2;
|
---|
| 441 |
|
---|
| 442 | // AttributeListByteCount <= mtu
|
---|
[374] | 443 | attributeListByteCount = big_endian_read_16(packet,offset);
|
---|
[352] | 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 |
|
---|