The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 1999-2012 Broadcom Corporation |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at: |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | * |
| 17 | ******************************************************************************/ |
| 18 | |
| 19 | /****************************************************************************** |
| 20 | * |
| 21 | * This file contains SDP utility functions |
| 22 | * |
| 23 | ******************************************************************************/ |
| 24 | |
| 25 | #include <stdlib.h> |
| 26 | #include <string.h> |
| 27 | #include <netinet/in.h> |
| 28 | #include <stdio.h> |
| 29 | |
| 30 | #include "gki.h" |
| 31 | #include "bt_types.h" |
| 32 | |
| 33 | #include "l2cdefs.h" |
| 34 | #include "hcidefs.h" |
| 35 | #include "hcimsgs.h" |
| 36 | |
| 37 | #include "sdp_api.h" |
| 38 | #include "sdpint.h" |
| 39 | |
| 40 | #include "btu.h" |
| 41 | |
| 42 | |
| 43 | static const UINT8 sdp_base_uuid[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, |
| 44 | 0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB}; |
| 45 | |
| 46 | /******************************************************************************* |
| 47 | ** |
| 48 | ** Function sdpu_find_ccb_by_cid |
| 49 | ** |
| 50 | ** Description This function searches the CCB table for an entry with the |
| 51 | ** passed CID. |
| 52 | ** |
| 53 | ** Returns the CCB address, or NULL if not found. |
| 54 | ** |
| 55 | *******************************************************************************/ |
| 56 | tCONN_CB *sdpu_find_ccb_by_cid (UINT16 cid) |
| 57 | { |
| 58 | UINT16 xx; |
| 59 | tCONN_CB *p_ccb; |
| 60 | |
| 61 | /* Look through each connection control block */ |
| 62 | for (xx = 0, p_ccb = sdp_cb.ccb; xx < SDP_MAX_CONNECTIONS; xx++, p_ccb++) |
| 63 | { |
| 64 | if ((p_ccb->con_state != SDP_STATE_IDLE) && (p_ccb->connection_id == cid)) |
| 65 | return (p_ccb); |
| 66 | } |
| 67 | |
| 68 | /* If here, not found */ |
| 69 | return (NULL); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | /******************************************************************************* |
| 74 | ** |
| 75 | ** Function sdpu_find_ccb_by_db |
| 76 | ** |
| 77 | ** Description This function searches the CCB table for an entry with the |
| 78 | ** passed discovery db. |
| 79 | ** |
| 80 | ** Returns the CCB address, or NULL if not found. |
| 81 | ** |
| 82 | *******************************************************************************/ |
| 83 | tCONN_CB *sdpu_find_ccb_by_db (tSDP_DISCOVERY_DB *p_db) |
| 84 | { |
| 85 | #if SDP_CLIENT_ENABLED == TRUE |
| 86 | UINT16 xx; |
| 87 | tCONN_CB *p_ccb; |
| 88 | |
| 89 | if (p_db) |
| 90 | { |
| 91 | /* Look through each connection control block */ |
| 92 | for (xx = 0, p_ccb = sdp_cb.ccb; xx < SDP_MAX_CONNECTIONS; xx++, p_ccb++) |
| 93 | { |
| 94 | if ((p_ccb->con_state != SDP_STATE_IDLE) && (p_ccb->p_db == p_db)) |
| 95 | return (p_ccb); |
| 96 | } |
| 97 | } |
| 98 | #endif |
| 99 | /* If here, not found */ |
| 100 | return (NULL); |
| 101 | } |
| 102 | |
| 103 | |
| 104 | /******************************************************************************* |
| 105 | ** |
| 106 | ** Function sdpu_allocate_ccb |
| 107 | ** |
| 108 | ** Description This function allocates a new CCB. |
| 109 | ** |
| 110 | ** Returns CCB address, or NULL if none available. |
| 111 | ** |
| 112 | *******************************************************************************/ |
| 113 | tCONN_CB *sdpu_allocate_ccb (void) |
| 114 | { |
| 115 | UINT16 xx; |
| 116 | tCONN_CB *p_ccb; |
| 117 | |
| 118 | /* Look through each connection control block for a free one */ |
| 119 | for (xx = 0, p_ccb = sdp_cb.ccb; xx < SDP_MAX_CONNECTIONS; xx++, p_ccb++) |
| 120 | { |
| 121 | if (p_ccb->con_state == SDP_STATE_IDLE) |
| 122 | { |
| 123 | memset (p_ccb, 0, sizeof (tCONN_CB)); |
| 124 | |
| 125 | p_ccb->timer_entry.param = (UINT32) p_ccb; |
| 126 | |
| 127 | return (p_ccb); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | /* If here, no free CCB found */ |
| 132 | return (NULL); |
| 133 | } |
| 134 | |
| 135 | |
| 136 | /******************************************************************************* |
| 137 | ** |
| 138 | ** Function sdpu_release_ccb |
| 139 | ** |
| 140 | ** Description This function releases a CCB. |
| 141 | ** |
| 142 | ** Returns void |
| 143 | ** |
| 144 | *******************************************************************************/ |
| 145 | void sdpu_release_ccb (tCONN_CB *p_ccb) |
| 146 | { |
| 147 | /* Ensure timer is stopped */ |
| 148 | btu_stop_timer (&p_ccb->timer_entry); |
| 149 | |
| 150 | /* Drop any response pointer we may be holding */ |
| 151 | p_ccb->con_state = SDP_STATE_IDLE; |
| 152 | #if SDP_CLIENT_ENABLED == TRUE |
| 153 | p_ccb->is_attr_search = FALSE; |
| 154 | #endif |
| 155 | |
| 156 | /* Free the response buffer */ |
| 157 | if (p_ccb->rsp_list) |
| 158 | { |
Sharvil Nanavati | a51c9d9 | 2014-05-04 01:08:21 -0700 | [diff] [blame] | 159 | SDP_TRACE_DEBUG("releasing SDP rsp_list"); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 160 | |
| 161 | GKI_freebuf(p_ccb->rsp_list); |
| 162 | p_ccb->rsp_list = NULL; |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | |
| 167 | /******************************************************************************* |
| 168 | ** |
| 169 | ** Function sdpu_build_attrib_seq |
| 170 | ** |
| 171 | ** Description This function builds an attribute sequence from the list of |
| 172 | ** passed attributes. It is also passed the address of the output |
| 173 | ** buffer. |
| 174 | ** |
| 175 | ** Returns Pointer to next byte in the output buffer. |
| 176 | ** |
| 177 | *******************************************************************************/ |
| 178 | UINT8 *sdpu_build_attrib_seq (UINT8 *p_out, UINT16 *p_attr, UINT16 num_attrs) |
| 179 | { |
| 180 | UINT16 xx; |
| 181 | |
| 182 | /* First thing is the data element header. See if the length fits 1 byte */ |
| 183 | /* If no attributes, assume a 4-byte wildcard */ |
| 184 | if (!p_attr) |
| 185 | xx = 5; |
| 186 | else |
| 187 | xx = num_attrs * 3; |
| 188 | |
| 189 | if (xx > 255) |
| 190 | { |
| 191 | UINT8_TO_BE_STREAM (p_out, (DATA_ELE_SEQ_DESC_TYPE << 3) | SIZE_IN_NEXT_WORD); |
| 192 | UINT16_TO_BE_STREAM (p_out, xx); |
| 193 | } |
| 194 | else |
| 195 | { |
| 196 | UINT8_TO_BE_STREAM (p_out, (DATA_ELE_SEQ_DESC_TYPE << 3) | SIZE_IN_NEXT_BYTE); |
| 197 | UINT8_TO_BE_STREAM (p_out, xx); |
| 198 | } |
| 199 | |
| 200 | /* If there are no attributes specified, assume caller wants wildcard */ |
| 201 | if (!p_attr) |
| 202 | { |
| 203 | UINT8_TO_BE_STREAM (p_out, (UINT_DESC_TYPE << 3) | SIZE_FOUR_BYTES); |
| 204 | UINT16_TO_BE_STREAM (p_out, 0); |
| 205 | UINT16_TO_BE_STREAM (p_out, 0xFFFF); |
| 206 | } |
| 207 | else |
| 208 | { |
| 209 | /* Loop through and put in all the attributes(s) */ |
| 210 | for (xx = 0; xx < num_attrs; xx++, p_attr++) |
| 211 | { |
| 212 | UINT8_TO_BE_STREAM (p_out, (UINT_DESC_TYPE << 3) | SIZE_TWO_BYTES); |
| 213 | UINT16_TO_BE_STREAM (p_out, *p_attr); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | return (p_out); |
| 218 | } |
| 219 | |
| 220 | |
| 221 | /******************************************************************************* |
| 222 | ** |
| 223 | ** Function sdpu_build_attrib_entry |
| 224 | ** |
| 225 | ** Description This function builds an attribute entry from the passed |
| 226 | ** attribute record. It is also passed the address of the output |
| 227 | ** buffer. |
| 228 | ** |
| 229 | ** Returns Pointer to next byte in the output buffer. |
| 230 | ** |
| 231 | *******************************************************************************/ |
| 232 | UINT8 *sdpu_build_attrib_entry (UINT8 *p_out, tSDP_ATTRIBUTE *p_attr) |
| 233 | { |
| 234 | /* First, store the attribute ID. Goes as a UINT */ |
| 235 | UINT8_TO_BE_STREAM (p_out, (UINT_DESC_TYPE << 3) | SIZE_TWO_BYTES); |
| 236 | UINT16_TO_BE_STREAM (p_out, p_attr->id); |
| 237 | |
| 238 | /* the attribute is in the db record. |
| 239 | * assuming the attribute len is less than SDP_MAX_ATTR_LEN */ |
| 240 | switch(p_attr->type) |
| 241 | { |
| 242 | case TEXT_STR_DESC_TYPE: /* 4 */ |
| 243 | case DATA_ELE_SEQ_DESC_TYPE:/* 6 */ |
| 244 | case DATA_ELE_ALT_DESC_TYPE:/* 7 */ |
| 245 | case URL_DESC_TYPE: /* 8 */ |
| 246 | #if (SDP_MAX_ATTR_LEN > 0xFFFF) |
| 247 | if(p_attr->len > 0xFFFF) |
| 248 | { |
| 249 | UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_IN_NEXT_LONG); |
| 250 | UINT32_TO_BE_STREAM (p_out, p_attr->len); |
| 251 | } |
| 252 | else |
| 253 | |
| 254 | #endif /* 0xFFFF - 0xFF */ |
| 255 | #if (SDP_MAX_ATTR_LEN > 0xFF) |
| 256 | if(p_attr->len > 0xFF) |
| 257 | { |
| 258 | UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_IN_NEXT_WORD); |
| 259 | UINT16_TO_BE_STREAM (p_out, p_attr->len); |
| 260 | } |
| 261 | else |
| 262 | |
| 263 | #endif /* 0xFF and less*/ |
| 264 | { |
| 265 | UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_IN_NEXT_BYTE); |
| 266 | UINT8_TO_BE_STREAM (p_out, p_attr->len); |
| 267 | } |
| 268 | |
| 269 | ARRAY_TO_BE_STREAM (p_out, p_attr->value_ptr, (int)p_attr->len); |
| 270 | |
| 271 | return (p_out); |
| 272 | } |
| 273 | |
| 274 | /* Now, store the attribute value */ |
| 275 | switch (p_attr->len) |
| 276 | { |
| 277 | case 1: |
| 278 | UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_ONE_BYTE); |
| 279 | break; |
| 280 | case 2: |
| 281 | UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_TWO_BYTES); |
| 282 | break; |
| 283 | case 4: |
| 284 | UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_FOUR_BYTES); |
| 285 | break; |
| 286 | case 8: |
| 287 | UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_EIGHT_BYTES); |
| 288 | break; |
| 289 | case 16: |
| 290 | UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_SIXTEEN_BYTES); |
| 291 | break; |
| 292 | default: |
| 293 | UINT8_TO_BE_STREAM (p_out, (p_attr->type << 3) | SIZE_IN_NEXT_BYTE); |
| 294 | UINT8_TO_BE_STREAM (p_out, p_attr->len); |
| 295 | break; |
| 296 | } |
| 297 | |
| 298 | ARRAY_TO_BE_STREAM (p_out, p_attr->value_ptr, (int)p_attr->len); |
| 299 | |
| 300 | return (p_out); |
| 301 | } |
| 302 | |
| 303 | |
| 304 | /******************************************************************************* |
| 305 | ** |
| 306 | ** Function sdpu_build_n_send_error |
| 307 | ** |
| 308 | ** Description This function builds and sends an error packet. |
| 309 | ** |
| 310 | ** Returns void |
| 311 | ** |
| 312 | *******************************************************************************/ |
| 313 | void sdpu_build_n_send_error (tCONN_CB *p_ccb, UINT16 trans_num, UINT16 error_code, char *p_error_text) |
| 314 | { |
| 315 | UINT8 *p_rsp, *p_rsp_start, *p_rsp_param_len; |
| 316 | UINT16 rsp_param_len; |
| 317 | BT_HDR *p_buf; |
| 318 | |
| 319 | |
Sharvil Nanavati | a51c9d9 | 2014-05-04 01:08:21 -0700 | [diff] [blame] | 320 | SDP_TRACE_WARNING ("SDP - sdpu_build_n_send_error code: 0x%x CID: 0x%x", |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 321 | error_code, p_ccb->connection_id); |
| 322 | |
| 323 | /* Get a buffer to use to build and send the packet to L2CAP */ |
| 324 | if ((p_buf = (BT_HDR *)GKI_getpoolbuf (SDP_POOL_ID)) == NULL) |
| 325 | { |
Sharvil Nanavati | a51c9d9 | 2014-05-04 01:08:21 -0700 | [diff] [blame] | 326 | SDP_TRACE_ERROR ("SDP - no buf for err msg"); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 327 | return; |
| 328 | } |
| 329 | p_buf->offset = L2CAP_MIN_OFFSET; |
| 330 | p_rsp = p_rsp_start = (UINT8 *)(p_buf + 1) + L2CAP_MIN_OFFSET; |
| 331 | |
| 332 | UINT8_TO_BE_STREAM (p_rsp, SDP_PDU_ERROR_RESPONSE); |
| 333 | UINT16_TO_BE_STREAM (p_rsp, trans_num); |
| 334 | |
| 335 | /* Skip the parameter length, we need to add it at the end */ |
| 336 | p_rsp_param_len = p_rsp; |
| 337 | p_rsp += 2; |
| 338 | |
| 339 | UINT16_TO_BE_STREAM (p_rsp, error_code); |
| 340 | |
| 341 | /* Unplugfest example traces do not have any error text */ |
| 342 | if (p_error_text) |
| 343 | ARRAY_TO_BE_STREAM (p_rsp, p_error_text, (int) strlen (p_error_text)); |
| 344 | |
| 345 | /* Go back and put the parameter length into the buffer */ |
| 346 | rsp_param_len = p_rsp - p_rsp_param_len - 2; |
| 347 | UINT16_TO_BE_STREAM (p_rsp_param_len, rsp_param_len); |
| 348 | |
| 349 | /* Set the length of the SDP data in the buffer */ |
| 350 | p_buf->len = p_rsp - p_rsp_start; |
| 351 | |
| 352 | |
| 353 | /* Send the buffer through L2CAP */ |
| 354 | L2CA_DataWrite (p_ccb->connection_id, p_buf); |
| 355 | } |
| 356 | |
| 357 | |
| 358 | |
| 359 | /******************************************************************************* |
| 360 | ** |
| 361 | ** Function sdpu_extract_uid_seq |
| 362 | ** |
| 363 | ** Description This function extracts a UUID sequence from the passed input |
| 364 | ** buffer, and puts it into the passed output list. |
| 365 | ** |
| 366 | ** Returns Pointer to next byte in the input buffer after the sequence. |
| 367 | ** |
| 368 | *******************************************************************************/ |
| 369 | UINT8 *sdpu_extract_uid_seq (UINT8 *p, UINT16 param_len, tSDP_UUID_SEQ *p_seq) |
| 370 | { |
| 371 | UINT8 *p_seq_end; |
| 372 | UINT8 descr, type, size; |
| 373 | UINT32 seq_len, uuid_len; |
| 374 | |
| 375 | /* Assume none found */ |
| 376 | p_seq->num_uids = 0; |
| 377 | |
| 378 | /* A UID sequence is composed of a bunch of UIDs. */ |
| 379 | |
| 380 | BE_STREAM_TO_UINT8 (descr, p); |
| 381 | type = descr >> 3; |
| 382 | size = descr & 7; |
| 383 | |
| 384 | if (type != DATA_ELE_SEQ_DESC_TYPE) |
| 385 | return (NULL); |
| 386 | |
| 387 | switch (size) |
| 388 | { |
| 389 | case SIZE_TWO_BYTES: |
| 390 | seq_len = 2; |
| 391 | break; |
| 392 | case SIZE_FOUR_BYTES: |
| 393 | seq_len = 4; |
| 394 | break; |
| 395 | case SIZE_SIXTEEN_BYTES: |
| 396 | seq_len = 16; |
| 397 | break; |
| 398 | case SIZE_IN_NEXT_BYTE: |
| 399 | BE_STREAM_TO_UINT8 (seq_len, p); |
| 400 | break; |
| 401 | case SIZE_IN_NEXT_WORD: |
| 402 | BE_STREAM_TO_UINT16 (seq_len, p); |
| 403 | break; |
| 404 | case SIZE_IN_NEXT_LONG: |
| 405 | BE_STREAM_TO_UINT32 (seq_len, p); |
| 406 | break; |
| 407 | default: |
| 408 | return (NULL); |
| 409 | } |
| 410 | |
| 411 | if (seq_len >= param_len) |
| 412 | return (NULL); |
| 413 | |
| 414 | p_seq_end = p + seq_len; |
| 415 | |
| 416 | /* Loop through, extracting the UIDs */ |
| 417 | for ( ; p < p_seq_end ; ) |
| 418 | { |
| 419 | BE_STREAM_TO_UINT8 (descr, p); |
| 420 | type = descr >> 3; |
| 421 | size = descr & 7; |
| 422 | |
| 423 | if (type != UUID_DESC_TYPE) |
| 424 | return (NULL); |
| 425 | |
| 426 | switch (size) |
| 427 | { |
| 428 | case SIZE_TWO_BYTES: |
| 429 | uuid_len = 2; |
| 430 | break; |
| 431 | case SIZE_FOUR_BYTES: |
| 432 | uuid_len = 4; |
| 433 | break; |
| 434 | case SIZE_SIXTEEN_BYTES: |
| 435 | uuid_len = 16; |
| 436 | break; |
| 437 | case SIZE_IN_NEXT_BYTE: |
| 438 | BE_STREAM_TO_UINT8 (uuid_len, p); |
| 439 | break; |
| 440 | case SIZE_IN_NEXT_WORD: |
| 441 | BE_STREAM_TO_UINT16 (uuid_len, p); |
| 442 | break; |
| 443 | case SIZE_IN_NEXT_LONG: |
| 444 | BE_STREAM_TO_UINT32 (uuid_len, p); |
| 445 | break; |
| 446 | default: |
| 447 | return (NULL); |
| 448 | } |
| 449 | |
| 450 | /* If UUID length is valid, copy it across */ |
| 451 | if ((uuid_len == 2) || (uuid_len == 4) || (uuid_len == 16)) |
| 452 | { |
| 453 | p_seq->uuid_entry[p_seq->num_uids].len = (UINT16) uuid_len; |
| 454 | BE_STREAM_TO_ARRAY (p, p_seq->uuid_entry[p_seq->num_uids].value, (int)uuid_len); |
| 455 | p_seq->num_uids++; |
| 456 | } |
| 457 | else |
| 458 | return (NULL); |
| 459 | |
| 460 | /* We can only do so many */ |
| 461 | if (p_seq->num_uids >= MAX_UUIDS_PER_SEQ) |
| 462 | return (NULL); |
| 463 | } |
| 464 | |
| 465 | if (p != p_seq_end) |
| 466 | return (NULL); |
| 467 | |
| 468 | return (p); |
| 469 | } |
| 470 | |
| 471 | |
| 472 | |
| 473 | /******************************************************************************* |
| 474 | ** |
| 475 | ** Function sdpu_extract_attr_seq |
| 476 | ** |
| 477 | ** Description This function extracts an attribute sequence from the passed |
| 478 | ** input buffer, and puts it into the passed output list. |
| 479 | ** |
| 480 | ** Returns Pointer to next byte in the input buffer after the sequence. |
| 481 | ** |
| 482 | *******************************************************************************/ |
| 483 | UINT8 *sdpu_extract_attr_seq (UINT8 *p, UINT16 param_len, tSDP_ATTR_SEQ *p_seq) |
| 484 | { |
| 485 | UINT8 *p_end_list; |
| 486 | UINT8 descr, type, size; |
| 487 | UINT32 list_len, attr_len; |
| 488 | |
| 489 | /* Assume none found */ |
| 490 | p_seq->num_attr = 0; |
| 491 | |
| 492 | /* Get attribute sequence info */ |
| 493 | BE_STREAM_TO_UINT8 (descr, p); |
| 494 | type = descr >> 3; |
| 495 | size = descr & 7; |
| 496 | |
| 497 | if (type != DATA_ELE_SEQ_DESC_TYPE) |
| 498 | return (p); |
| 499 | |
| 500 | switch (size) |
| 501 | { |
| 502 | case SIZE_IN_NEXT_BYTE: |
| 503 | BE_STREAM_TO_UINT8 (list_len, p); |
| 504 | break; |
| 505 | |
| 506 | case SIZE_IN_NEXT_WORD: |
| 507 | BE_STREAM_TO_UINT16 (list_len, p); |
| 508 | break; |
| 509 | |
| 510 | case SIZE_IN_NEXT_LONG: |
| 511 | BE_STREAM_TO_UINT32 (list_len, p); |
| 512 | break; |
| 513 | |
| 514 | default: |
| 515 | return (p); |
| 516 | } |
| 517 | |
| 518 | if (list_len > param_len) |
| 519 | return (p); |
| 520 | |
| 521 | p_end_list = p + list_len; |
| 522 | |
| 523 | /* Loop through, extracting the attribute IDs */ |
| 524 | for ( ; p < p_end_list ; ) |
| 525 | { |
| 526 | BE_STREAM_TO_UINT8 (descr, p); |
| 527 | type = descr >> 3; |
| 528 | size = descr & 7; |
| 529 | |
| 530 | if (type != UINT_DESC_TYPE) |
| 531 | return (p); |
| 532 | |
| 533 | switch (size) |
| 534 | { |
| 535 | case SIZE_TWO_BYTES: |
| 536 | attr_len = 2; |
| 537 | break; |
| 538 | case SIZE_FOUR_BYTES: |
| 539 | attr_len = 4; |
| 540 | break; |
| 541 | case SIZE_IN_NEXT_BYTE: |
| 542 | BE_STREAM_TO_UINT8 (attr_len, p); |
| 543 | break; |
| 544 | case SIZE_IN_NEXT_WORD: |
| 545 | BE_STREAM_TO_UINT16 (attr_len, p); |
| 546 | break; |
| 547 | case SIZE_IN_NEXT_LONG: |
| 548 | BE_STREAM_TO_UINT32 (attr_len, p); |
| 549 | break; |
| 550 | default: |
| 551 | return (NULL); |
| 552 | break; |
| 553 | } |
| 554 | |
| 555 | /* Attribute length must be 2-bytes or 4-bytes for a paired entry. */ |
| 556 | if (attr_len == 2) |
| 557 | { |
| 558 | BE_STREAM_TO_UINT16 (p_seq->attr_entry[p_seq->num_attr].start, p); |
| 559 | p_seq->attr_entry[p_seq->num_attr].end = p_seq->attr_entry[p_seq->num_attr].start; |
| 560 | } |
| 561 | else if (attr_len == 4) |
| 562 | { |
| 563 | BE_STREAM_TO_UINT16 (p_seq->attr_entry[p_seq->num_attr].start, p); |
| 564 | BE_STREAM_TO_UINT16 (p_seq->attr_entry[p_seq->num_attr].end, p); |
| 565 | } |
| 566 | else |
| 567 | return (NULL); |
| 568 | |
| 569 | /* We can only do so many */ |
| 570 | if (++p_seq->num_attr >= MAX_ATTR_PER_SEQ) |
| 571 | return (NULL); |
| 572 | } |
| 573 | |
| 574 | return (p); |
| 575 | } |
| 576 | |
| 577 | |
| 578 | /******************************************************************************* |
| 579 | ** |
| 580 | ** Function sdpu_get_len_from_type |
| 581 | ** |
| 582 | ** Description This function gets the length |
| 583 | ** |
| 584 | ** Returns void |
| 585 | ** |
| 586 | *******************************************************************************/ |
| 587 | UINT8 *sdpu_get_len_from_type (UINT8 *p, UINT8 type, UINT32 *p_len) |
| 588 | { |
| 589 | UINT8 u8; |
| 590 | UINT16 u16; |
| 591 | UINT32 u32; |
| 592 | |
| 593 | switch (type & 7) |
| 594 | { |
| 595 | case SIZE_ONE_BYTE: |
| 596 | *p_len = 1; |
| 597 | break; |
| 598 | case SIZE_TWO_BYTES: |
| 599 | *p_len = 2; |
| 600 | break; |
| 601 | case SIZE_FOUR_BYTES: |
| 602 | *p_len = 4; |
| 603 | break; |
| 604 | case SIZE_EIGHT_BYTES: |
| 605 | *p_len = 8; |
| 606 | break; |
| 607 | case SIZE_SIXTEEN_BYTES: |
| 608 | *p_len = 16; |
| 609 | break; |
| 610 | case SIZE_IN_NEXT_BYTE: |
| 611 | BE_STREAM_TO_UINT8 (u8, p); |
| 612 | *p_len = u8; |
| 613 | break; |
| 614 | case SIZE_IN_NEXT_WORD: |
| 615 | BE_STREAM_TO_UINT16 (u16, p); |
| 616 | *p_len = u16; |
| 617 | break; |
| 618 | case SIZE_IN_NEXT_LONG: |
| 619 | BE_STREAM_TO_UINT32 (u32, p); |
| 620 | *p_len = (UINT16) u32; |
| 621 | break; |
| 622 | } |
| 623 | |
| 624 | return (p); |
| 625 | } |
| 626 | |
| 627 | |
| 628 | /******************************************************************************* |
| 629 | ** |
| 630 | ** Function sdpu_is_base_uuid |
| 631 | ** |
| 632 | ** Description This function checks a 128-bit UUID with the base to see if |
| 633 | ** it matches. Only the last 12 bytes are compared. |
| 634 | ** |
| 635 | ** Returns TRUE if matched, else FALSE |
| 636 | ** |
| 637 | *******************************************************************************/ |
| 638 | BOOLEAN sdpu_is_base_uuid (UINT8 *p_uuid) |
| 639 | { |
| 640 | UINT16 xx; |
| 641 | |
| 642 | for (xx = 4; xx < MAX_UUID_SIZE; xx++) |
| 643 | if (p_uuid[xx] != sdp_base_uuid[xx]) |
| 644 | return (FALSE); |
| 645 | |
| 646 | /* If here, matched */ |
| 647 | return (TRUE); |
| 648 | } |
| 649 | |
| 650 | |
| 651 | /******************************************************************************* |
| 652 | ** |
| 653 | ** Function sdpu_compare_uuid_arrays |
| 654 | ** |
| 655 | ** Description This function compares 2 BE UUIDs. If needed, they are expanded |
| 656 | ** to 128-bit UUIDs, then compared. |
| 657 | ** |
| 658 | ** NOTE it is assumed that the arrays are in Big Endian format |
| 659 | ** |
| 660 | ** Returns TRUE if matched, else FALSE |
| 661 | ** |
| 662 | *******************************************************************************/ |
| 663 | BOOLEAN sdpu_compare_uuid_arrays (UINT8 *p_uuid1, UINT32 len1, UINT8 *p_uuid2, UINT16 len2) |
| 664 | { |
| 665 | UINT8 nu1[MAX_UUID_SIZE]; |
| 666 | UINT8 nu2[MAX_UUID_SIZE]; |
| 667 | |
| 668 | /* If lengths match, do a straight compare */ |
| 669 | if (len1 == len2) |
| 670 | { |
| 671 | if (len1 == 2) |
| 672 | return ((p_uuid1[0] == p_uuid2[0]) && (p_uuid1[1] == p_uuid2[1])); |
| 673 | if (len1 == 4) |
| 674 | return ( (p_uuid1[0] == p_uuid2[0]) && (p_uuid1[1] == p_uuid2[1]) |
| 675 | && (p_uuid1[2] == p_uuid2[2]) && (p_uuid1[3] == p_uuid2[3]) ); |
| 676 | else |
| 677 | return (memcmp (p_uuid1, p_uuid2, (size_t)len1) == 0); |
| 678 | } |
| 679 | else if (len1 > len2) |
| 680 | { |
| 681 | /* If the len1 was 4-byte, (so len2 is 2-byte), compare on the fly */ |
| 682 | if (len1 == 4) |
| 683 | { |
| 684 | return ( (p_uuid1[0] == 0) && (p_uuid1[1] == 0) |
| 685 | && (p_uuid1[2] == p_uuid2[0]) && (p_uuid1[3] == p_uuid2[1]) ); |
| 686 | } |
| 687 | else |
| 688 | { |
| 689 | /* Normalize UUIDs to 16-byte form, then compare. Len1 must be 16 */ |
| 690 | memcpy (nu1, p_uuid1, MAX_UUID_SIZE); |
| 691 | memcpy (nu2, sdp_base_uuid, MAX_UUID_SIZE); |
| 692 | |
| 693 | if (len2 == 4) |
| 694 | memcpy (nu2, p_uuid2, len2); |
| 695 | else |
| 696 | memcpy (nu2 + 2, p_uuid2, len2); |
| 697 | |
| 698 | return (memcmp (nu1, nu2, MAX_UUID_SIZE) == 0); |
| 699 | } |
| 700 | } |
| 701 | else |
| 702 | { |
| 703 | /* len2 is greater than len1 */ |
| 704 | /* If the len2 was 4-byte, (so len1 is 2-byte), compare on the fly */ |
| 705 | if (len2 == 4) |
| 706 | { |
| 707 | return ( (p_uuid2[0] == 0) && (p_uuid2[1] == 0) |
| 708 | && (p_uuid2[2] == p_uuid1[0]) && (p_uuid2[3] == p_uuid1[1]) ); |
| 709 | } |
| 710 | else |
| 711 | { |
| 712 | /* Normalize UUIDs to 16-byte form, then compare. Len1 must be 16 */ |
| 713 | memcpy (nu2, p_uuid2, MAX_UUID_SIZE); |
| 714 | memcpy (nu1, sdp_base_uuid, MAX_UUID_SIZE); |
| 715 | |
| 716 | if (len1 == 4) |
| 717 | memcpy (nu1, p_uuid1, (size_t)len1); |
| 718 | else |
| 719 | memcpy (nu1 + 2, p_uuid1, (size_t)len1); |
| 720 | |
| 721 | return (memcmp (nu1, nu2, MAX_UUID_SIZE) == 0); |
| 722 | } |
| 723 | } |
| 724 | } |
| 725 | |
| 726 | |
| 727 | /******************************************************************************* |
| 728 | ** |
| 729 | ** Function sdpu_compare_bt_uuids |
| 730 | ** |
| 731 | ** Description This function compares 2 BT UUID structures. |
| 732 | ** |
| 733 | ** NOTE it is assumed that BT UUID structures are compressed to the |
| 734 | ** smallest possible UUIDs (by removing the base SDP UUID) |
| 735 | ** |
| 736 | ** Returns TRUE if matched, else FALSE |
| 737 | ** |
| 738 | *******************************************************************************/ |
| 739 | BOOLEAN sdpu_compare_bt_uuids (tBT_UUID *p_uuid1, tBT_UUID *p_uuid2) |
| 740 | { |
| 741 | /* Lengths must match for BT UUIDs to match */ |
| 742 | if (p_uuid1->len == p_uuid2->len) |
| 743 | { |
| 744 | if (p_uuid1->len == 2) |
| 745 | return (p_uuid1->uu.uuid16 == p_uuid2->uu.uuid16); |
| 746 | else if (p_uuid1->len == 4) |
| 747 | return (p_uuid1->uu.uuid32 == p_uuid2->uu.uuid32); |
| 748 | else if (!memcmp (p_uuid1->uu.uuid128, p_uuid2->uu.uuid128, 16)) |
| 749 | return (TRUE); |
| 750 | } |
| 751 | |
| 752 | return (FALSE); |
| 753 | } |
| 754 | |
| 755 | |
| 756 | /******************************************************************************* |
| 757 | ** |
| 758 | ** Function sdpu_compare_uuid_with_attr |
| 759 | ** |
| 760 | ** Description This function compares a BT UUID structure with the UUID in an |
| 761 | ** SDP attribute record. If needed, they are expanded to 128-bit |
| 762 | ** UUIDs, then compared. |
| 763 | ** |
| 764 | ** NOTE - it is assumed that BT UUID structures are compressed to the |
| 765 | ** smallest possible UUIDs (by removing the base SDP UUID). |
| 766 | ** - it is also assumed that the discovery atribute is compressed |
| 767 | ** to the smallest possible |
| 768 | ** |
| 769 | ** Returns TRUE if matched, else FALSE |
| 770 | ** |
| 771 | *******************************************************************************/ |
| 772 | BOOLEAN sdpu_compare_uuid_with_attr (tBT_UUID *p_btuuid, tSDP_DISC_ATTR *p_attr) |
| 773 | { |
| 774 | UINT16 attr_len = SDP_DISC_ATTR_LEN (p_attr->attr_len_type); |
| 775 | |
| 776 | /* Since both UUIDs are compressed, lengths must match */ |
| 777 | if (p_btuuid->len != attr_len) |
| 778 | return (FALSE); |
| 779 | |
| 780 | if (p_btuuid->len == 2) |
| 781 | return (BOOLEAN)(p_btuuid->uu.uuid16 == p_attr->attr_value.v.u16); |
| 782 | else if (p_btuuid->len == 4) |
| 783 | return (BOOLEAN)(p_btuuid->uu.uuid32 == p_attr->attr_value.v.u32); |
| 784 | /* coverity[overrun-buffer-arg] */ |
| 785 | /* |
| 786 | Event overrun-buffer-arg: Overrun of static array "&p_attr->attr_value.v.array" of size 4 bytes by passing it to a function which indexes it with argument "16U" at byte position 15 |
| 787 | FALSE-POSITIVE error from Coverity test tool. Please do NOT remove following comment. |
| 788 | False-positive: SDP uses scratch buffer to hold the attribute value. |
| 789 | The actual size of tSDP_DISC_ATVAL does not matter. |
| 790 | If the array size in tSDP_DISC_ATVAL is increase, we would increase the system RAM usage unnecessarily |
| 791 | */ |
| 792 | else if (!memcmp (p_btuuid->uu.uuid128, p_attr->attr_value.v.array, MAX_UUID_SIZE)) |
| 793 | return (TRUE); |
| 794 | |
| 795 | return (FALSE); |
| 796 | } |
| 797 | |
| 798 | /******************************************************************************* |
| 799 | ** |
| 800 | ** Function sdpu_sort_attr_list |
| 801 | ** |
| 802 | ** Description sorts a list of attributes in numeric order from lowest to |
| 803 | ** highest to conform to SDP specification |
| 804 | ** |
| 805 | ** Returns void |
| 806 | ** |
| 807 | *******************************************************************************/ |
| 808 | void sdpu_sort_attr_list( UINT16 num_attr, tSDP_DISCOVERY_DB *p_db ) |
| 809 | { |
| 810 | UINT16 i; |
| 811 | UINT16 x; |
| 812 | |
| 813 | /* Done if no attributes to sort */ |
| 814 | if (num_attr <= 1) |
| 815 | { |
| 816 | return; |
| 817 | } |
| 818 | else if (num_attr > SDP_MAX_ATTR_FILTERS) |
| 819 | { |
| 820 | num_attr = SDP_MAX_ATTR_FILTERS; |
| 821 | } |
| 822 | |
| 823 | num_attr--; /* for the for-loop */ |
| 824 | for( i = 0; i < num_attr; ) |
| 825 | { |
| 826 | if( p_db->attr_filters[i] > p_db->attr_filters[i+1] ) |
| 827 | { |
| 828 | /* swap the attribute IDs and start from the beginning */ |
| 829 | x = p_db->attr_filters[i]; |
| 830 | p_db->attr_filters[i] = p_db->attr_filters[i+1]; |
| 831 | p_db->attr_filters[i+1] = x; |
| 832 | |
| 833 | i = 0; |
| 834 | } |
| 835 | else |
| 836 | i++; |
| 837 | } |
| 838 | } |
| 839 | |
| 840 | |
| 841 | /******************************************************************************* |
| 842 | ** |
| 843 | ** Function sdpu_get_list_len |
| 844 | ** |
| 845 | ** Description gets the total list length in the sdp database for a given |
| 846 | ** uid sequence and attr sequence |
| 847 | ** |
| 848 | ** Returns void |
| 849 | ** |
| 850 | *******************************************************************************/ |
| 851 | UINT16 sdpu_get_list_len(tSDP_UUID_SEQ *uid_seq, tSDP_ATTR_SEQ *attr_seq) |
| 852 | { |
| 853 | tSDP_RECORD *p_rec; |
| 854 | UINT16 len = 0; |
| 855 | UINT16 len1; |
| 856 | |
| 857 | for (p_rec = sdp_db_service_search (NULL, uid_seq); p_rec; p_rec = sdp_db_service_search (p_rec, uid_seq)) |
| 858 | { |
| 859 | len += 3; |
| 860 | |
| 861 | len1 = sdpu_get_attrib_seq_len(p_rec, attr_seq ); |
| 862 | |
| 863 | if (len1 != 0) |
| 864 | len += len1; |
| 865 | else |
| 866 | len -= 3; |
| 867 | } |
| 868 | return len; |
| 869 | } |
| 870 | |
| 871 | /******************************************************************************* |
| 872 | ** |
| 873 | ** Function sdpu_get_attrib_seq_len |
| 874 | ** |
| 875 | ** Description gets the length of the specific attributes in a given |
| 876 | ** sdp record |
| 877 | ** |
| 878 | ** Returns void |
| 879 | ** |
| 880 | *******************************************************************************/ |
| 881 | UINT16 sdpu_get_attrib_seq_len(tSDP_RECORD *p_rec, tSDP_ATTR_SEQ *attr_seq) |
| 882 | { |
| 883 | tSDP_ATTRIBUTE *p_attr; |
| 884 | UINT16 len1 = 0; |
| 885 | UINT16 xx; |
| 886 | BOOLEAN is_range = FALSE; |
Ganesh Ganapathi Batta | ead3cde | 2013-02-05 15:22:31 -0800 | [diff] [blame] | 887 | UINT16 start_id=0, end_id=0; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 888 | |
| 889 | for (xx = 0; xx < attr_seq->num_attr; xx++) |
| 890 | { |
| 891 | if (is_range == FALSE) |
| 892 | { |
| 893 | start_id = attr_seq->attr_entry[xx].start; |
| 894 | end_id = attr_seq->attr_entry[xx].end; |
| 895 | } |
| 896 | p_attr = sdp_db_find_attr_in_rec (p_rec, |
| 897 | start_id, |
| 898 | end_id); |
| 899 | if (p_attr) |
| 900 | { |
| 901 | len1 += sdpu_get_attrib_entry_len (p_attr); |
| 902 | |
| 903 | /* If doing a range, stick with this one till no more attributes found */ |
| 904 | if (start_id != end_id) |
| 905 | { |
| 906 | /* Update for next time through */ |
| 907 | start_id = p_attr->id + 1; |
| 908 | xx--; |
| 909 | is_range = TRUE; |
| 910 | } |
| 911 | else |
| 912 | is_range = FALSE; |
| 913 | } |
| 914 | else |
| 915 | is_range = FALSE; |
| 916 | } |
| 917 | return len1; |
| 918 | } |
| 919 | |
| 920 | /******************************************************************************* |
| 921 | ** |
| 922 | ** Function sdpu_get_attrib_entry_len |
| 923 | ** |
| 924 | ** Description gets the length of a specific attribute |
| 925 | ** |
| 926 | ** Returns void |
| 927 | ** |
| 928 | *******************************************************************************/ |
| 929 | UINT16 sdpu_get_attrib_entry_len(tSDP_ATTRIBUTE *p_attr) |
| 930 | { |
| 931 | UINT16 len = 3; |
| 932 | |
| 933 | /* the attribute is in the db record. |
| 934 | * assuming the attribute len is less than SDP_MAX_ATTR_LEN */ |
| 935 | switch(p_attr->type) |
| 936 | { |
| 937 | case TEXT_STR_DESC_TYPE: /* 4 */ |
| 938 | case DATA_ELE_SEQ_DESC_TYPE:/* 6 */ |
| 939 | case DATA_ELE_ALT_DESC_TYPE:/* 7 */ |
| 940 | case URL_DESC_TYPE: /* 8 */ |
| 941 | #if (SDP_MAX_ATTR_LEN > 0xFFFF) |
| 942 | if(p_attr->len > 0xFFFF) |
| 943 | { |
| 944 | len += 5; |
| 945 | } |
| 946 | else |
| 947 | |
| 948 | #endif/* 0xFFFF - 0xFF */ |
| 949 | #if (SDP_MAX_ATTR_LEN > 0xFF) |
| 950 | if(p_attr->len > 0xFF) |
| 951 | { |
| 952 | len += 3; |
| 953 | } |
| 954 | else |
| 955 | |
| 956 | #endif /* 0xFF and less*/ |
| 957 | { |
| 958 | len += 2; |
| 959 | } |
| 960 | len += p_attr->len; |
| 961 | return len; |
| 962 | } |
| 963 | |
| 964 | /* Now, the attribute value */ |
| 965 | switch (p_attr->len) |
| 966 | { |
| 967 | case 1: |
| 968 | case 2: |
| 969 | case 4: |
| 970 | case 8: |
| 971 | case 16: |
| 972 | len += 1; |
| 973 | break; |
| 974 | default: |
| 975 | len += 2; |
| 976 | break; |
| 977 | } |
| 978 | |
| 979 | len += p_attr->len; |
| 980 | return len; |
| 981 | } |
| 982 | |
| 983 | |
| 984 | /******************************************************************************* |
| 985 | ** |
| 986 | ** Function sdpu_build_partial_attrib_entry |
| 987 | ** |
| 988 | ** Description This function fills a buffer with partial attribute. It is |
| 989 | ** assumed that the maximum size of any attribute is 256 bytes. |
| 990 | ** |
| 991 | ** p_out: output buffer |
| 992 | ** p_attr: attribute to be copied partially into p_out |
| 993 | ** rem_len: num bytes to copy into p_out |
| 994 | ** offset: current start offset within the attr that needs to be copied |
| 995 | ** |
| 996 | ** Returns Pointer to next byte in the output buffer. |
| 997 | ** offset is also updated |
| 998 | ** |
| 999 | *******************************************************************************/ |
| 1000 | UINT8 *sdpu_build_partial_attrib_entry (UINT8 *p_out, tSDP_ATTRIBUTE *p_attr, UINT16 len, UINT16 *offset) |
| 1001 | { |
Ganesh Ganapathi Batta | ead3cde | 2013-02-05 15:22:31 -0800 | [diff] [blame] | 1002 | UINT8 *p_attr_buff; |
| 1003 | UINT8 *p_tmp_attr; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 1004 | size_t len_to_copy; |
| 1005 | UINT16 attr_len; |
| 1006 | |
Ganesh Ganapathi Batta | ead3cde | 2013-02-05 15:22:31 -0800 | [diff] [blame] | 1007 | if ((p_attr_buff = (UINT8 *) GKI_getbuf(sizeof(UINT8) * SDP_MAX_ATTR_LEN )) == NULL) |
| 1008 | { |
Sharvil Nanavati | a51c9d9 | 2014-05-04 01:08:21 -0700 | [diff] [blame] | 1009 | SDP_TRACE_ERROR("sdpu_build_partial_attrib_entry cannot get a buffer!"); |
Ganesh Ganapathi Batta | ead3cde | 2013-02-05 15:22:31 -0800 | [diff] [blame] | 1010 | return NULL; |
| 1011 | } |
| 1012 | p_tmp_attr = p_attr_buff; |
| 1013 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 1014 | sdpu_build_attrib_entry(p_tmp_attr, p_attr); |
| 1015 | attr_len = sdpu_get_attrib_entry_len(p_attr); |
| 1016 | |
| 1017 | len_to_copy = ((attr_len - *offset) < len) ? (attr_len - *offset): len; |
| 1018 | |
Ganesh Ganapathi Batta | ead3cde | 2013-02-05 15:22:31 -0800 | [diff] [blame] | 1019 | memcpy(p_out, &p_attr_buff[*offset], len_to_copy); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 1020 | |
| 1021 | p_out = &p_out[len_to_copy]; |
| 1022 | *offset += len_to_copy; |
| 1023 | |
Ganesh Ganapathi Batta | ead3cde | 2013-02-05 15:22:31 -0800 | [diff] [blame] | 1024 | GKI_freebuf(p_attr_buff); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 1025 | return p_out; |
| 1026 | } |
| 1027 | |
| 1028 | /******************************************************************************* |
| 1029 | ** |
| 1030 | ** Function sdpu_uuid16_to_uuid128 |
| 1031 | ** |
| 1032 | ** Description This function converts UUID-16 to UUID-128 by including the base UUID |
| 1033 | ** |
| 1034 | ** uuid16: 2-byte UUID |
| 1035 | ** p_uuid128: Expanded 128-bit UUID |
| 1036 | ** |
| 1037 | ** Returns None |
| 1038 | ** |
| 1039 | *******************************************************************************/ |
| 1040 | void sdpu_uuid16_to_uuid128(UINT16 uuid16, UINT8* p_uuid128) |
| 1041 | { |
| 1042 | UINT16 uuid16_bo; |
| 1043 | memset(p_uuid128, 0, 16); |
| 1044 | |
| 1045 | memcpy(p_uuid128, sdp_base_uuid, MAX_UUID_SIZE); |
| 1046 | uuid16_bo = ntohs(uuid16); |
| 1047 | memcpy(p_uuid128+ 2, &uuid16_bo, sizeof(uint16_t)); |
| 1048 | } |