1 /****************************************************************************** 2 * 3 * Copyright (c) 2014 The Android Open Source Project 4 * Copyright (C) 2003-2012 Broadcom Corporation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at: 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 ******************************************************************************/ 19 20 /****************************************************************************** 21 * 22 * This file contains the audio gateway functions performing SDP 23 * operations. 24 * 25 ******************************************************************************/ 26 27 #include <string.h> 28 #include "bta_api.h" 29 #include "bta_sys.h" 30 #include "bt_utils.h" 31 #include "bta_hf_client_api.h" 32 #include "bta_hf_client_int.h" 33 34 /* Number of protocol elements in protocol element list. */ 35 #define BTA_HF_CLIENT_NUM_PROTO_ELEMS 2 36 37 /* Number of elements in service class id list. */ 38 #define BTA_HF_CLIENT_NUM_SVC_ELEMS 2 39 40 /******************************************************************************* 41 ** 42 ** Function bta_hf_client_sdp_cback 43 ** 44 ** Description SDP callback function. 45 ** 46 ** 47 ** Returns void 48 ** 49 *******************************************************************************/ 50 static void bta_hf_client_sdp_cback(UINT16 status) 51 { 52 UINT16 event; 53 tBTA_HF_CLIENT_DISC_RESULT *p_buf = 54 (tBTA_HF_CLIENT_DISC_RESULT *)osi_malloc(sizeof(tBTA_HF_CLIENT_DISC_RESULT)); 55 56 APPL_TRACE_DEBUG("bta_hf_client_sdp_cback status:0x%x", status); 57 58 /* set event according to int/acp */ 59 if (bta_hf_client_cb.scb.role == BTA_HF_CLIENT_ACP) 60 event = BTA_HF_CLIENT_DISC_ACP_RES_EVT; 61 else 62 event = BTA_HF_CLIENT_DISC_INT_RES_EVT; 63 64 p_buf->hdr.event = event; 65 p_buf->status = status; 66 67 bta_sys_sendmsg(p_buf); 68 } 69 70 /****************************************************************************** 71 ** 72 ** Function bta_hf_client_add_record 73 ** 74 ** Description This function is called by a server application to add 75 ** HFP Client information to an SDP record. Prior to 76 ** calling this function the application must call 77 ** SDP_CreateRecord() to create an SDP record. 78 ** 79 ** Returns TRUE if function execution succeeded, 80 ** FALSE if function execution failed. 81 ** 82 ******************************************************************************/ 83 BOOLEAN bta_hf_client_add_record(char *p_service_name, UINT8 scn, 84 tBTA_HF_CLIENT_FEAT features, UINT32 sdp_handle) 85 { 86 tSDP_PROTOCOL_ELEM proto_elem_list[BTA_HF_CLIENT_NUM_PROTO_ELEMS]; 87 UINT16 svc_class_id_list[BTA_HF_CLIENT_NUM_SVC_ELEMS]; 88 UINT16 browse_list[] = {UUID_SERVCLASS_PUBLIC_BROWSE_GROUP}; 89 UINT16 version; 90 UINT16 profile_uuid; 91 BOOLEAN result = TRUE; 92 UINT8 buf[2]; 93 UINT16 sdp_features = 0; 94 95 APPL_TRACE_DEBUG("bta_hf_client_add_record"); 96 97 memset( proto_elem_list, 0 , BTA_HF_CLIENT_NUM_PROTO_ELEMS*sizeof(tSDP_PROTOCOL_ELEM)); 98 99 /* add the protocol element sequence */ 100 proto_elem_list[0].protocol_uuid = UUID_PROTOCOL_L2CAP; 101 proto_elem_list[0].num_params = 0; 102 proto_elem_list[1].protocol_uuid = UUID_PROTOCOL_RFCOMM; 103 proto_elem_list[1].num_params = 1; 104 proto_elem_list[1].params[0] = scn; 105 result &= SDP_AddProtocolList(sdp_handle, BTA_HF_CLIENT_NUM_PROTO_ELEMS, proto_elem_list); 106 107 /* add service class id list */ 108 svc_class_id_list[0] = UUID_SERVCLASS_HF_HANDSFREE; 109 svc_class_id_list[1] = UUID_SERVCLASS_GENERIC_AUDIO; 110 result &= SDP_AddServiceClassIdList(sdp_handle, BTA_HF_CLIENT_NUM_SVC_ELEMS, svc_class_id_list); 111 112 /* add profile descriptor list */ 113 profile_uuid = UUID_SERVCLASS_HF_HANDSFREE; 114 version = HFP_VERSION_1_6; 115 116 result &= SDP_AddProfileDescriptorList(sdp_handle, profile_uuid, version); 117 118 /* add service name */ 119 if (p_service_name != NULL && p_service_name[0] != 0) 120 { 121 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE, 122 (UINT32)(strlen(p_service_name)+1), (UINT8 *) p_service_name); 123 } 124 125 /* add features */ 126 if (features & BTA_HF_CLIENT_FEAT_ECNR) 127 sdp_features |= BTA_HF_CLIENT_FEAT_ECNR; 128 129 if (features & BTA_HF_CLIENT_FEAT_3WAY) 130 sdp_features |= BTA_HF_CLIENT_FEAT_3WAY; 131 132 if (features & BTA_HF_CLIENT_FEAT_CLI) 133 sdp_features |= BTA_HF_CLIENT_FEAT_CLI; 134 135 if (features & BTA_HF_CLIENT_FEAT_VREC) 136 sdp_features |= BTA_HF_CLIENT_FEAT_VREC; 137 138 if (features & BTA_HF_CLIENT_FEAT_VOL) 139 sdp_features |= BTA_HF_CLIENT_FEAT_VOL; 140 141 /* Codec bit position is different in SDP (bit 5) and in BRSF (bit 7) */ 142 if (features & BTA_HF_CLIENT_FEAT_CODEC) 143 sdp_features |= 0x0020; 144 145 UINT16_TO_BE_FIELD(buf, sdp_features); 146 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES, UINT_DESC_TYPE, 2, buf); 147 148 /* add browse group list */ 149 result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1, browse_list); 150 151 return result; 152 } 153 154 /******************************************************************************* 155 ** 156 ** Function bta_hf_client_create_record 157 ** 158 ** Description Create SDP record for registered service. 159 ** 160 ** 161 ** Returns void 162 ** 163 *******************************************************************************/ 164 void bta_hf_client_create_record(tBTA_HF_CLIENT_DATA *p_data) 165 { 166 /* add sdp record if not already registered */ 167 if (bta_hf_client_cb.sdp_handle == 0) 168 { 169 bta_hf_client_cb.sdp_handle = SDP_CreateRecord(); 170 bta_hf_client_cb.scn = BTM_AllocateSCN(); 171 bta_hf_client_add_record(p_data->api_register.name, 172 bta_hf_client_cb.scn, 173 p_data->api_register.features, 174 bta_hf_client_cb.sdp_handle); 175 176 bta_sys_add_uuid(UUID_SERVCLASS_HF_HANDSFREE); 177 } 178 179 } 180 181 /******************************************************************************* 182 ** 183 ** Function bta_hf_client_del_record 184 ** 185 ** Description Delete SDP record for registered service. 186 ** 187 ** 188 ** Returns void 189 ** 190 *******************************************************************************/ 191 void bta_hf_client_del_record(tBTA_HF_CLIENT_DATA *p_data) 192 { 193 UNUSED(p_data); 194 195 APPL_TRACE_DEBUG("bta_hf_client_del_record"); 196 197 if (bta_hf_client_cb.sdp_handle != 0) 198 { 199 SDP_DeleteRecord(bta_hf_client_cb.sdp_handle); 200 bta_hf_client_cb.sdp_handle = 0; 201 BTM_FreeSCN(bta_hf_client_cb.scn); 202 BTM_SecClrService(BTM_SEC_SERVICE_HF_HANDSFREE); 203 bta_sys_remove_uuid(UUID_SERVCLASS_HF_HANDSFREE); 204 } 205 } 206 207 /******************************************************************************* 208 ** 209 ** Function bta_hf_client_sdp_find_attr 210 ** 211 ** Description Process SDP discovery results to find requested attribute 212 ** 213 ** 214 ** Returns TRUE if results found, FALSE otherwise. 215 ** 216 *******************************************************************************/ 217 BOOLEAN bta_hf_client_sdp_find_attr(void) 218 { 219 tSDP_DISC_REC *p_rec = NULL; 220 tSDP_DISC_ATTR *p_attr; 221 tSDP_PROTOCOL_ELEM pe; 222 BOOLEAN result = FALSE; 223 224 bta_hf_client_cb.scb.peer_version = HFP_VERSION_1_1; /* Default version */ 225 226 /* loop through all records we found */ 227 while (TRUE) 228 { 229 /* get next record; if none found, we're done */ 230 if ((p_rec = SDP_FindServiceInDb(bta_hf_client_cb.scb.p_disc_db, UUID_SERVCLASS_AG_HANDSFREE, p_rec)) == NULL) 231 { 232 break; 233 } 234 235 /* get scn from proto desc list if initiator */ 236 if (bta_hf_client_cb.scb.role == BTA_HF_CLIENT_INT) 237 { 238 if (SDP_FindProtocolListElemInRec(p_rec, UUID_PROTOCOL_RFCOMM, &pe)) 239 { 240 bta_hf_client_cb.scb.peer_scn = (UINT8) pe.params[0]; 241 } 242 else 243 { 244 continue; 245 } 246 } 247 248 /* get profile version (if failure, version parameter is not updated) */ 249 SDP_FindProfileVersionInRec(p_rec, UUID_SERVCLASS_HF_HANDSFREE, &bta_hf_client_cb.scb.peer_version); 250 251 /* get features */ 252 if ((p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_FEATURES)) != NULL) 253 { 254 /* Found attribute. Get value. */ 255 /* There might be race condition between SDP and BRSF. */ 256 /* Do not update if we already received BRSF. */ 257 if (bta_hf_client_cb.scb.peer_features == 0) 258 { 259 bta_hf_client_cb.scb.peer_features = p_attr->attr_value.v.u16; 260 261 /* SDP and BRSF WBS bit are different, correct it if set */ 262 if (bta_hf_client_cb.scb.peer_features & 0x0020) 263 { 264 bta_hf_client_cb.scb.peer_features &= ~0x0020; 265 bta_hf_client_cb.scb.peer_features |= BTA_HF_CLIENT_PEER_CODEC; 266 } 267 268 /* get network for ability to reject calls */ 269 if ((p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_NETWORK)) != NULL) 270 { 271 if (p_attr->attr_value.v.u16 == 0x01) 272 { 273 bta_hf_client_cb.scb.peer_features |= BTA_HF_CLIENT_PEER_REJECT; 274 } 275 } 276 } 277 } 278 279 /* found what we needed */ 280 result = TRUE; 281 break; 282 } 283 284 APPL_TRACE_DEBUG("%s peer_version=0x%x peer_features=0x%x", 285 __FUNCTION__, bta_hf_client_cb.scb.peer_version, 286 bta_hf_client_cb.scb.peer_features); 287 288 return result; 289 } 290 291 /******************************************************************************* 292 ** 293 ** Function bta_hf_client_do_disc 294 ** 295 ** Description Do service discovery. 296 ** 297 ** 298 ** Returns void 299 ** 300 *******************************************************************************/ 301 void bta_hf_client_do_disc(void) 302 { 303 tSDP_UUID uuid_list[2]; 304 UINT16 num_uuid = 1; 305 UINT16 attr_list[4]; 306 UINT8 num_attr; 307 BOOLEAN db_inited = FALSE; 308 309 /* initiator; get proto list and features */ 310 if (bta_hf_client_cb.scb.role == BTA_HF_CLIENT_INT) 311 { 312 attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST; 313 attr_list[1] = ATTR_ID_PROTOCOL_DESC_LIST; 314 attr_list[2] = ATTR_ID_BT_PROFILE_DESC_LIST; 315 attr_list[3] = ATTR_ID_SUPPORTED_FEATURES; 316 num_attr = 4; 317 uuid_list[0].uu.uuid16 = UUID_SERVCLASS_AG_HANDSFREE; 318 } 319 /* acceptor; get features */ 320 else 321 { 322 attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST; 323 attr_list[1] = ATTR_ID_BT_PROFILE_DESC_LIST; 324 attr_list[2] = ATTR_ID_SUPPORTED_FEATURES; 325 num_attr = 3; 326 uuid_list[0].uu.uuid16 = UUID_SERVCLASS_AG_HANDSFREE; 327 } 328 329 /* allocate buffer for sdp database */ 330 bta_hf_client_cb.scb.p_disc_db = (tSDP_DISCOVERY_DB *)osi_malloc(BT_DEFAULT_BUFFER_SIZE); 331 332 /* set up service discovery database; attr happens to be attr_list len */ 333 uuid_list[0].len = LEN_UUID_16; 334 uuid_list[1].len = LEN_UUID_16; 335 db_inited = SDP_InitDiscoveryDb(bta_hf_client_cb.scb.p_disc_db, 336 BT_DEFAULT_BUFFER_SIZE, num_uuid, 337 uuid_list, num_attr, attr_list); 338 339 if (db_inited) 340 { 341 /*Service discovery not initiated */ 342 db_inited = SDP_ServiceSearchAttributeRequest(bta_hf_client_cb.scb.peer_addr, 343 bta_hf_client_cb.scb.p_disc_db, bta_hf_client_sdp_cback); 344 } 345 346 if (!db_inited) 347 { 348 /*free discover db */ 349 bta_hf_client_free_db(NULL); 350 /* sent failed event */ 351 bta_hf_client_sm_execute(BTA_HF_CLIENT_DISC_FAIL_EVT, NULL); 352 } 353 354 } 355 356 /******************************************************************************* 357 ** 358 ** Function bta_hf_client_free_db 359 ** 360 ** Description Free discovery database. 361 ** 362 ** 363 ** Returns void 364 ** 365 *******************************************************************************/ 366 void bta_hf_client_free_db(tBTA_HF_CLIENT_DATA *p_data) 367 { 368 UNUSED(p_data); 369 osi_free_and_reset((void **)&bta_hf_client_cb.scb.p_disc_db); 370 } 371
