1 /****************************************************************************** 2 * 3 * Copyright (C) 2009-2012 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 * Filename: btif_sock_rfc.c 22 * 23 * Description: Handsfree Profile Bluetooth Interface 24 * 25 ***********************************************************************************/ 26 #include <hardware/bluetooth.h> 27 #include <hardware/bt_sock.h> 28 #include <sys/types.h> 29 #include <sys/socket.h> 30 #include <errno.h> 31 #include <sys/ioctl.h> 32 33 #define LOG_TAG "BTIF_SOCK" 34 #include "btif_common.h" 35 #include "btif_util.h" 36 37 #include "bd.h" 38 39 #include "bta_api.h" 40 #include "btif_sock_thread.h" 41 #include "btif_sock_sdp.h" 42 #include "btif_sock_util.h" 43 44 #include "bt_target.h" 45 #include "gki.h" 46 #include "hcimsgs.h" 47 #include "sdp_api.h" 48 #include "btu.h" 49 #include "btm_api.h" 50 #include "btm_int.h" 51 #include "bta_jv_api.h" 52 #include "bta_jv_co.h" 53 #include "port_api.h" 54 55 #include <cutils/log.h> 56 #include <hardware/bluetooth.h> 57 #define asrt(s) if(!(s)) APPL_TRACE_ERROR3("## %s assert %s failed at line:%d ##",__FUNCTION__, #s, __LINE__) 58 59 extern void uuid_to_string(bt_uuid_t *p_uuid, char *str); 60 static inline void logu(const char* title, const uint8_t * p_uuid) 61 { 62 char uuids[128]; 63 uuid_to_string((bt_uuid_t*)p_uuid, uuids); 64 ALOGD("%s: %s", title, uuids); 65 } 66 67 68 69 #define MAX_RFC_CHANNEL 30 70 #define MAX_RFC_SESSION BTA_JV_MAX_RFC_SR_SESSION //3 by default 71 typedef struct { 72 int outgoing_congest : 1; 73 int pending_sdp_request : 1; 74 int doing_sdp_request : 1; 75 int server : 1; 76 int connected : 1; 77 int closing : 1; 78 } flags_t; 79 80 typedef struct { 81 flags_t f; 82 uint32_t id; 83 int security; 84 int scn; 85 bt_bdaddr_t addr; 86 uint8_t service_uuid[16]; 87 char service_name[256]; 88 int fd, app_fd; 89 int mtu; 90 uint8_t* packet; 91 int sdp_handle; 92 int rfc_handle; 93 int rfc_port_handle; 94 int role; 95 BUFFER_Q incoming_que; 96 } rfc_slot_t; 97 98 static rfc_slot_t rfc_slots[MAX_RFC_CHANNEL]; 99 static uint32_t rfc_slot_id; 100 static volatile int pth = -1; //poll thread handle 101 static void jv_dm_cback(tBTA_JV_EVT event, tBTA_JV *p_data, void *user_data); 102 static void cleanup_rfc_slot(rfc_slot_t* rs); 103 static inline void close_rfc_connection(int rfc_handle, int server); 104 static bt_status_t dm_get_remote_service_record(bt_bdaddr_t *remote_addr, 105 bt_uuid_t *uuid); 106 static void *rfcomm_cback(tBTA_JV_EVT event, tBTA_JV *p_data, void *user_data); 107 static inline BOOLEAN send_app_scn(rfc_slot_t* rs); 108 static pthread_mutex_t slot_lock; 109 #define is_init_done() (pth != -1) 110 static inline void clear_slot_flag(flags_t* f) 111 { 112 memset(f, 0, sizeof(*f)); 113 } 114 115 static inline void bd_copy(UINT8* dest, UINT8* src, BOOLEAN swap) 116 { 117 if (swap) 118 { 119 int i; 120 for (i =0; i < 6 ;i++) 121 dest[i]= src[5-i]; 122 } 123 else memcpy(dest, src, 6); 124 } 125 static inline void free_gki_que(BUFFER_Q* q) 126 { 127 while(!GKI_queue_is_empty(q)) 128 GKI_freebuf(GKI_dequeue(q)); 129 } 130 static void init_rfc_slots() 131 { 132 int i; 133 memset(rfc_slots, 0, sizeof(rfc_slot_t)*MAX_RFC_CHANNEL); 134 for(i = 0; i < MAX_RFC_CHANNEL; i++) 135 { 136 rfc_slots[i].scn = -1; 137 rfc_slots[i].sdp_handle = 0; 138 rfc_slots[i].fd = rfc_slots[i].app_fd = -1; 139 GKI_init_q(&rfc_slots[i].incoming_que); 140 } 141 BTA_JvEnable(jv_dm_cback); 142 init_slot_lock(&slot_lock); 143 } 144 bt_status_t btsock_rfc_init(int poll_thread_handle) 145 { 146 pth = poll_thread_handle; 147 init_rfc_slots(); 148 return BT_STATUS_SUCCESS; 149 } 150 void btsock_rfc_cleanup() 151 { 152 int curr_pth = pth; 153 pth = -1; 154 btsock_thread_exit(curr_pth); 155 lock_slot(&slot_lock); 156 int i; 157 for(i = 0; i < MAX_RFC_CHANNEL; i++) 158 { 159 if(rfc_slots[i].id) 160 cleanup_rfc_slot(&rfc_slots[i]); 161 } 162 unlock_slot(&slot_lock); 163 } 164 static inline rfc_slot_t* find_free_slot() 165 { 166 int i; 167 for(i = 0; i < MAX_RFC_CHANNEL; i++) 168 { 169 if(rfc_slots[i].fd == -1) 170 { 171 return &rfc_slots[i]; 172 } 173 } 174 return NULL; 175 } 176 static inline rfc_slot_t* find_rfc_slot_by_id(uint32_t id) 177 { 178 int i; 179 if(id) 180 { 181 for(i = 0; i < MAX_RFC_CHANNEL; i++) 182 { 183 if(rfc_slots[i].id == id) 184 { 185 return &rfc_slots[i]; 186 } 187 } 188 } 189 APPL_TRACE_WARNING1("invalid rfc slot id: %d", id); 190 return NULL; 191 } 192 static inline rfc_slot_t* find_rfc_slot_by_pending_sdp() 193 { 194 uint32_t min_id = (uint32_t)-1; 195 int slot = -1; 196 int i; 197 for(i = 0; i < MAX_RFC_CHANNEL; i++) 198 { 199 if(rfc_slots[i].id && rfc_slots[i].f.pending_sdp_request) 200 { 201 if(rfc_slots[i].id < min_id) 202 { 203 min_id = rfc_slots[i].id; 204 slot = i; 205 } 206 } 207 } 208 if(0<= slot && slot < MAX_RFC_CHANNEL) 209 return &rfc_slots[slot]; 210 return NULL; 211 } 212 static inline rfc_slot_t* find_rfc_slot_requesting_sdp() 213 { 214 int i; 215 for(i = 0; i < MAX_RFC_CHANNEL; i++) 216 { 217 if(rfc_slots[i].id && rfc_slots[i].f.doing_sdp_request) 218 return &rfc_slots[i]; 219 } 220 APPL_TRACE_DEBUG0("can not find any slot is requesting sdp"); 221 return NULL; 222 } 223 224 static inline rfc_slot_t* find_rfc_slot_by_fd(int fd) 225 { 226 int i; 227 if(fd >= 0) 228 { 229 for(i = 0; i < MAX_RFC_CHANNEL; i++) 230 { 231 if(rfc_slots[i].fd == fd) 232 { 233 if(rfc_slots[i].id) 234 return &rfc_slots[i]; 235 else 236 { 237 APPL_TRACE_ERROR0("invalid rfc slot id, cannot be 0"); 238 break; 239 } 240 } 241 } 242 } 243 return NULL; 244 } 245 static rfc_slot_t* alloc_rfc_slot(const bt_bdaddr_t *addr, const char* name, const uint8_t* uuid, int channel, int flags, BOOLEAN server) 246 { 247 int security = 0; 248 if(flags & BTSOCK_FLAG_ENCRYPT) 249 security |= server ? BTM_SEC_IN_ENCRYPT : BTM_SEC_OUT_ENCRYPT; 250 if(flags & BTSOCK_FLAG_AUTH) 251 security |= server ? BTM_SEC_IN_AUTHENTICATE : BTM_SEC_OUT_AUTHENTICATE; 252 253 rfc_slot_t* rs = find_free_slot(); 254 if(rs) 255 { 256 int fds[2] = {-1, -1}; 257 if(socketpair(AF_LOCAL, SOCK_STREAM, 0, fds)) 258 { 259 APPL_TRACE_ERROR1("socketpair failed, errno:%d", errno); 260 return NULL; 261 } 262 rs->fd = fds[0]; 263 rs->app_fd = fds[1]; 264 rs->security = security; 265 rs->scn = channel; 266 if(uuid) 267 memcpy(rs->service_uuid, uuid, sizeof(rs->service_uuid)); 268 else memset(rs->service_uuid, 0, sizeof(rs->service_uuid)); 269 if(name && *name) 270 strncpy(rs->service_name, name, sizeof(rs->service_name) -1); 271 if(addr) 272 rs->addr = *addr; 273 ++rfc_slot_id; 274 if(rfc_slot_id == 0) 275 rfc_slot_id = 1; //skip 0 when wrapped 276 rs->id = rfc_slot_id; 277 rs->f.server = server; 278 } 279 return rs; 280 } 281 // rfc_slot_t* accept_rs = create_srv_accept_rfc_slot(srv_rs, p_open->rem_bda,p_opne->handle, p_open->new_listen_handle); 282 static inline rfc_slot_t* create_srv_accept_rfc_slot(rfc_slot_t* srv_rs, const bt_bdaddr_t* addr, 283 int open_handle, int new_listen_handle) 284 { 285 rfc_slot_t *accept_rs = alloc_rfc_slot(addr, srv_rs->service_name, srv_rs->service_uuid, srv_rs->scn, 0, FALSE); 286 clear_slot_flag(&accept_rs->f); 287 accept_rs->f.server = FALSE; 288 accept_rs->f.connected = TRUE; 289 accept_rs->security = srv_rs->security; 290 accept_rs->mtu = srv_rs->mtu; 291 accept_rs->role = srv_rs->role; 292 accept_rs->rfc_handle = open_handle; 293 accept_rs->rfc_port_handle = BTA_JvRfcommGetPortHdl(open_handle); 294 asrt(accept_rs->rfc_handle == srv_rs->rfc_handle); 295 asrt(accept_rs->rfc_port_handle == srv_rs->rfc_port_handle); 296 //now update listen handle of server slot 297 srv_rs->rfc_handle = new_listen_handle; 298 srv_rs->rfc_port_handle = BTA_JvRfcommGetPortHdl(new_listen_handle); 299 //now swap the slot id 300 uint32_t new_listen_id = accept_rs->id; 301 accept_rs->id = srv_rs->id; 302 srv_rs->id = new_listen_id; 303 return accept_rs; 304 } 305 bt_status_t btsock_rfc_listen(const char* service_name, const uint8_t* service_uuid, int channel, 306 int* sock_fd, int flags) 307 { 308 if(sock_fd == NULL || (service_uuid == NULL && (channel < 1 || channel > 30))) 309 { 310 APPL_TRACE_ERROR3("invalid rfc channel:%d or sock_fd:%p, uuid:%p", channel, sock_fd, service_uuid); 311 return BT_STATUS_PARM_INVALID; 312 } 313 *sock_fd = -1; 314 if(!is_init_done()) 315 return BT_STATUS_NOT_READY; 316 if(is_uuid_empty(service_uuid)) 317 service_uuid = UUID_SPP; //use serial port profile to listen to specified channel 318 else 319 { 320 //Check the service_uuid. overwrite the channel # if reserved 321 int reserved_channel = get_reserved_rfc_channel(service_uuid); 322 if(reserved_channel > 0) 323 { 324 channel = reserved_channel; 325 } 326 } 327 int status = BT_STATUS_FAIL; 328 lock_slot(&slot_lock); 329 rfc_slot_t* rs = alloc_rfc_slot(NULL, service_name, service_uuid, channel, flags, TRUE); 330 if(rs) 331 { 332 BTA_JvCreateRecordByUser((void *)rs->id); 333 *sock_fd = rs->app_fd; 334 rs->app_fd = -1; //the fd ownership is transferred to app 335 status = BT_STATUS_SUCCESS; 336 btsock_thread_add_fd(pth, rs->fd, BTSOCK_RFCOMM, SOCK_THREAD_FD_EXCEPTION, rs->id); 337 } 338 unlock_slot(&slot_lock); 339 return status; 340 } 341 bt_status_t btsock_rfc_connect(const bt_bdaddr_t *bd_addr, const uint8_t* service_uuid, 342 int channel, int* sock_fd, int flags) 343 { 344 if(sock_fd == NULL || (service_uuid == NULL && (channel < 1 || channel > 30))) 345 { 346 APPL_TRACE_ERROR3("invalid rfc channel:%d or sock_fd:%p, uuid:%p", channel, sock_fd, 347 service_uuid); 348 return BT_STATUS_PARM_INVALID; 349 } 350 *sock_fd = -1; 351 if(!is_init_done()) 352 return BT_STATUS_NOT_READY; 353 int status = BT_STATUS_FAIL; 354 lock_slot(&slot_lock); 355 rfc_slot_t* rs = alloc_rfc_slot(bd_addr, NULL, service_uuid, channel, flags, FALSE); 356 if(rs) 357 { 358 if(is_uuid_empty(service_uuid)) 359 { 360 APPL_TRACE_DEBUG1("connecting to rfcomm channel:%d without service discovery", channel); 361 if(BTA_JvRfcommConnect(rs->security, rs->role, rs->scn, rs->addr.address, 362 rfcomm_cback, (void*)rs->id) == BTA_JV_SUCCESS) 363 { 364 if(send_app_scn(rs)) 365 { 366 btsock_thread_add_fd(pth, rs->fd, BTSOCK_RFCOMM, 367 SOCK_THREAD_FD_RD, rs->id); 368 *sock_fd = rs->app_fd; 369 rs->app_fd = -1; //the fd ownership is transferred to app 370 status = BT_STATUS_SUCCESS; 371 } 372 else cleanup_rfc_slot(rs); 373 } 374 else cleanup_rfc_slot(rs); 375 } 376 else 377 { 378 tSDP_UUID sdp_uuid; 379 sdp_uuid.len = 16; 380 memcpy(sdp_uuid.uu.uuid128, service_uuid, sizeof(sdp_uuid.uu.uuid128)); 381 logu("service_uuid", service_uuid); 382 *sock_fd = rs->app_fd; 383 rs->app_fd = -1; //the fd ownership is transferred to app 384 status = BT_STATUS_SUCCESS; 385 rfc_slot_t* rs_doing_sdp = find_rfc_slot_requesting_sdp(); 386 if(rs_doing_sdp == NULL) 387 { 388 BTA_JvStartDiscovery((UINT8*)bd_addr->address, 1, &sdp_uuid, (void*)rs->id); 389 rs->f.pending_sdp_request = FALSE; 390 rs->f.doing_sdp_request = TRUE; 391 } 392 else 393 { 394 rs->f.pending_sdp_request = TRUE; 395 rs->f.doing_sdp_request = FALSE; 396 } 397 btsock_thread_add_fd(pth, rs->fd, BTSOCK_RFCOMM, SOCK_THREAD_FD_RD, rs->id); 398 } 399 } 400 unlock_slot(&slot_lock); 401 return status; 402 } 403 404 static int create_server_sdp_record(rfc_slot_t* rs) 405 { 406 int scn = rs->scn; 407 if(rs->scn > 0) 408 { 409 if(BTM_TryAllocateSCN(rs->scn) == FALSE) 410 { 411 APPL_TRACE_ERROR1("rfc channel:%d already in use", scn); 412 return FALSE; 413 } 414 } 415 else if((rs->scn = BTM_AllocateSCN()) == 0) 416 { 417 APPL_TRACE_ERROR0("run out of rfc channels"); 418 return FALSE; 419 } 420 if((rs->sdp_handle = add_rfc_sdp_rec(rs->service_name, rs->service_uuid, rs->scn)) <= 0) 421 { 422 return FALSE; 423 } 424 return TRUE; 425 } 426 const char * jv_evt[] = { 427 "BTA_JV_ENABLE_EVT", 428 "BTA_JV_SET_DISCOVER_EVT", 429 "BTA_JV_LOCAL_ADDR_EVT", 430 "BTA_JV_LOCAL_NAME_EVT", 431 "BTA_JV_REMOTE_NAME_EVT", 432 "BTA_JV_SET_ENCRYPTION_EVT", 433 "BTA_JV_GET_SCN_EVT", 434 "BTA_JV_GET_PSM_EVT", 435 "BTA_JV_DISCOVERY_COMP_EVT", 436 "BTA_JV_SERVICES_LEN_EVT", 437 "BTA_JV_SERVICE_SEL_EVT", 438 "BTA_JV_CREATE_RECORD_EVT", 439 "BTA_JV_UPDATE_RECORD_EVT", 440 "BTA_JV_ADD_ATTR_EVT", 441 "BTA_JV_DELETE_ATTR_EVT", 442 "BTA_JV_CANCEL_DISCVRY_EVT", 443 444 "BTA_JV_L2CAP_OPEN_EVT", 445 "BTA_JV_L2CAP_CLOSE_EVT", 446 "BTA_JV_L2CAP_START_EVT", 447 "BTA_JV_L2CAP_CL_INIT_EVT", 448 "BTA_JV_L2CAP_DATA_IND_EVT", 449 "BTA_JV_L2CAP_CONG_EVT", 450 "BTA_JV_L2CAP_READ_EVT", 451 "BTA_JV_L2CAP_RECEIVE_EVT", 452 "BTA_JV_L2CAP_WRITE_EVT", 453 454 "BTA_JV_RFCOMM_OPEN_EVT", 455 "BTA_JV_RFCOMM_CLOSE_EVT", 456 "BTA_JV_RFCOMM_START_EVT", 457 "BTA_JV_RFCOMM_CL_INIT_EVT", 458 "BTA_JV_RFCOMM_DATA_IND_EVT", 459 "BTA_JV_RFCOMM_CONG_EVT", 460 "BTA_JV_RFCOMM_READ_EVT", 461 "BTA_JV_RFCOMM_WRITE_EVT", 462 "BTA_JV_RFCOMM_SRV_OPEN_EVT", // 33 /* open status of Server RFCOMM connection */ 463 "BTA_JV_MAX_EVT" 464 }; 465 static inline void free_rfc_slot_scn(rfc_slot_t* rs) 466 { 467 if(rs->scn > 0) 468 { 469 if(rs->f.server && !rs->f.closing) 470 { 471 BTA_JvRfcommStopServer(rs->rfc_handle); 472 rs->rfc_handle = 0; 473 } 474 BTM_FreeSCN(rs->scn); 475 rs->scn = 0; 476 } 477 } 478 static void cleanup_rfc_slot(rfc_slot_t* rs) 479 { 480 APPL_TRACE_DEBUG3("cleanup slot:%d, fd:%d, scn:%d", rs->id, rs->fd, rs->scn); 481 if(rs->fd != -1) 482 { 483 shutdown(rs->fd, 2); 484 close(rs->fd); 485 rs->fd = -1; 486 } 487 if(rs->app_fd != -1) 488 { 489 close(rs->app_fd); 490 rs->app_fd = -1; 491 } 492 if(rs->sdp_handle > 0) 493 { 494 del_rfc_sdp_rec(rs->sdp_handle); 495 rs->sdp_handle = 0; 496 } 497 if(rs->rfc_handle && !rs->f.closing && !rs->f.server) 498 { 499 APPL_TRACE_DEBUG1("closing rfcomm connection, rfc_handle:%d", rs->rfc_handle); 500 BTA_JvRfcommClose(rs->rfc_handle); 501 rs->rfc_handle = 0; 502 } 503 free_rfc_slot_scn(rs); 504 free_gki_que(&rs->incoming_que); 505 506 rs->rfc_port_handle = 0; 507 //cleanup the flag 508 memset(&rs->f, 0, sizeof(rs->f)); 509 rs->id = 0; 510 } 511 static inline BOOLEAN send_app_scn(rfc_slot_t* rs) 512 { 513 if(sock_send_all(rs->fd, (const uint8_t*)&rs->scn, sizeof(rs->scn)) == sizeof(rs->scn)) 514 { 515 return TRUE; 516 } 517 518 return FALSE; 519 } 520 static BOOLEAN send_app_connect_signal(int fd, const bt_bdaddr_t* addr, int channel, int status, int send_fd) 521 { 522 /* 523 typedef struct { 524 short size; 525 bt_bdaddr_t bd_addr; 526 int channel; 527 int status; 528 } __attribute__((packed)) sock_connect_signal_t; 529 */ 530 sock_connect_signal_t cs; 531 cs.size = sizeof(cs); 532 cs.bd_addr = *addr; 533 cs.channel = channel; 534 cs.status = status; 535 if(send_fd != -1) 536 { 537 if(sock_send_fd(fd, (const uint8_t*)&cs, sizeof(cs), send_fd) == sizeof(cs)) 538 return TRUE; 539 else APPL_TRACE_ERROR2("sock_send_fd failed, fd:%d, send_fd:%d", fd, send_fd); 540 } 541 else if(sock_send_all(fd, (const uint8_t*)&cs, sizeof(cs)) == sizeof(cs)) 542 { 543 return TRUE; 544 } 545 return FALSE; 546 } 547 static void on_cl_rfc_init(tBTA_JV_RFCOMM_CL_INIT *p_init, uint32_t id) 548 { 549 lock_slot(&slot_lock); 550 rfc_slot_t* rs = find_rfc_slot_by_id(id); 551 if(rs) 552 { 553 if (p_init->status != BTA_JV_SUCCESS) 554 cleanup_rfc_slot(rs); 555 else 556 { 557 rs->rfc_handle = p_init->handle; 558 } 559 } 560 unlock_slot(&slot_lock); 561 } 562 static void on_srv_rfc_listen_started(tBTA_JV_RFCOMM_START *p_start, uint32_t id) 563 { 564 lock_slot(&slot_lock); 565 rfc_slot_t* rs = find_rfc_slot_by_id(id); 566 if(rs) 567 { 568 if (p_start->status != BTA_JV_SUCCESS) 569 cleanup_rfc_slot(rs); 570 else 571 { 572 rs->rfc_handle = p_start->handle; 573 574 if(!send_app_scn(rs)) 575 { 576 //closed 577 APPL_TRACE_DEBUG1("send_app_scn() failed, close rs->id:%d", rs->id); 578 cleanup_rfc_slot(rs); 579 } 580 } 581 } 582 unlock_slot(&slot_lock); 583 } 584 static uint32_t on_srv_rfc_connect(tBTA_JV_RFCOMM_SRV_OPEN *p_open, uint32_t id) 585 { 586 uint32_t new_listen_slot_id = 0; 587 lock_slot(&slot_lock); 588 rfc_slot_t* srv_rs = find_rfc_slot_by_id(id); 589 if(srv_rs) 590 { 591 rfc_slot_t* accept_rs = create_srv_accept_rfc_slot(srv_rs, (const bt_bdaddr_t*)p_open->rem_bda, 592 p_open->handle, p_open->new_listen_handle); 593 if(accept_rs) 594 { 595 //start monitor the socket 596 btsock_thread_add_fd(pth, srv_rs->fd, BTSOCK_RFCOMM, SOCK_THREAD_FD_EXCEPTION, srv_rs->id); 597 btsock_thread_add_fd(pth, accept_rs->fd, BTSOCK_RFCOMM, SOCK_THREAD_FD_RD, accept_rs->id); 598 APPL_TRACE_DEBUG1("sending connect signal & app fd:%dto app server to accept() the connection", 599 accept_rs->app_fd); 600 APPL_TRACE_DEBUG2("server fd:%d, scn:%d", srv_rs->fd, srv_rs->scn); 601 send_app_connect_signal(srv_rs->fd, &accept_rs->addr, srv_rs->scn, 0, accept_rs->app_fd); 602 accept_rs->app_fd = -1; //the fd is closed after sent to app 603 new_listen_slot_id = srv_rs->id; 604 } 605 } 606 unlock_slot(&slot_lock); 607 return new_listen_slot_id; 608 } 609 static void on_cli_rfc_connect(tBTA_JV_RFCOMM_OPEN *p_open, uint32_t id) 610 { 611 lock_slot(&slot_lock); 612 rfc_slot_t* rs = find_rfc_slot_by_id(id); 613 if(rs && p_open->status == BTA_JV_SUCCESS) 614 { 615 rs->rfc_port_handle = BTA_JvRfcommGetPortHdl(p_open->handle); 616 bd_copy(rs->addr.address, p_open->rem_bda, 0); 617 //notify app rfc is connected 618 APPL_TRACE_DEBUG4("call send_app_connect_signal, slot id:%d, fd:%d, rfc scn:%d, server:%d", 619 rs->id, rs->fd, rs->scn, rs->f.server); 620 if(send_app_connect_signal(rs->fd, &rs->addr, rs->scn, 0, -1)) 621 { 622 //start monitoring the socketpair to get call back when app writing data 623 APPL_TRACE_DEBUG3("on_rfc_connect_ind, connect signal sent, slot id:%d, rfc scn:%d, server:%d", 624 rs->id, rs->scn, rs->f.server); 625 rs->f.connected = TRUE; 626 } 627 else APPL_TRACE_ERROR0("send_app_connect_signal failed"); 628 } 629 else if(rs) 630 cleanup_rfc_slot(rs); 631 unlock_slot(&slot_lock); 632 } 633 static void on_rfc_close(tBTA_JV_RFCOMM_CLOSE * p_close, uint32_t id) 634 { 635 lock_slot(&slot_lock); 636 rfc_slot_t* rs = find_rfc_slot_by_id(id); 637 if(rs) 638 { 639 APPL_TRACE_DEBUG4("on_rfc_close, slot id:%d, fd:%d, rfc scn:%d, server:%d", 640 rs->id, rs->fd, rs->scn, rs->f.server); 641 free_rfc_slot_scn(rs); 642 //rfc_handle already closed when receiving rfcomm close event from stack. 643 rs->rfc_handle = 0; 644 rs->f.connected = FALSE; 645 cleanup_rfc_slot(rs); 646 } 647 unlock_slot(&slot_lock); 648 } 649 static void on_rfc_write_done(tBTA_JV_RFCOMM_WRITE *p, uint32_t id) 650 { 651 lock_slot(&slot_lock); 652 rfc_slot_t* rs = find_rfc_slot_by_id(id); 653 if(rs && !rs->f.outgoing_congest) 654 { 655 //mointer the fd for any outgoing data 656 btsock_thread_add_fd(pth, rs->fd, BTSOCK_RFCOMM, SOCK_THREAD_FD_RD, rs->id); 657 } 658 unlock_slot(&slot_lock); 659 } 660 static void on_rfc_outgoing_congest(tBTA_JV_RFCOMM_CONG *p, uint32_t id) 661 { 662 lock_slot(&slot_lock); 663 rfc_slot_t* rs = find_rfc_slot_by_id(id); 664 if(rs) 665 { 666 rs->f.outgoing_congest = p->cong ? 1 : 0; 667 //mointer the fd for any outgoing data 668 if(!rs->f.outgoing_congest) 669 btsock_thread_add_fd(pth, rs->fd, BTSOCK_RFCOMM, SOCK_THREAD_FD_RD, rs->id); 670 } 671 unlock_slot(&slot_lock); 672 } 673 674 static void *rfcomm_cback(tBTA_JV_EVT event, tBTA_JV *p_data, void *user_data) 675 { 676 int rc; 677 void* new_user_data = NULL; 678 APPL_TRACE_DEBUG1("event=%s", jv_evt[event]); 679 680 switch (event) 681 { 682 case BTA_JV_RFCOMM_START_EVT: 683 on_srv_rfc_listen_started(&p_data->rfc_start, (uint32_t)user_data); 684 break; 685 686 case BTA_JV_RFCOMM_CL_INIT_EVT: 687 on_cl_rfc_init(&p_data->rfc_cl_init, (uint32_t)user_data); 688 break; 689 690 case BTA_JV_RFCOMM_OPEN_EVT: 691 on_cli_rfc_connect(&p_data->rfc_open, (uint32_t)user_data); 692 break; 693 case BTA_JV_RFCOMM_SRV_OPEN_EVT: 694 new_user_data = (void*)on_srv_rfc_connect(&p_data->rfc_srv_open, (uint32_t)user_data); 695 break; 696 697 case BTA_JV_RFCOMM_CLOSE_EVT: 698 on_rfc_close(&p_data->rfc_close, (uint32_t)user_data); 699 break; 700 701 case BTA_JV_RFCOMM_READ_EVT: 702 APPL_TRACE_DEBUG0("BTA_JV_RFCOMM_READ_EVT not used"); 703 break; 704 705 case BTA_JV_RFCOMM_WRITE_EVT: 706 on_rfc_write_done(&p_data->rfc_write, (uint32_t)user_data); 707 break; 708 709 case BTA_JV_RFCOMM_DATA_IND_EVT: 710 APPL_TRACE_DEBUG0("BTA_JV_RFCOMM_DATA_IND_EVT not used"); 711 break; 712 713 case BTA_JV_RFCOMM_CONG_EVT: 714 //on_rfc_cong(&p_data->rfc_cong); 715 on_rfc_outgoing_congest(&p_data->rfc_cong, (uint32_t)user_data); 716 break; 717 default: 718 APPL_TRACE_ERROR2("unhandled event %d, slot id:%d", event, (uint32_t)user_data); 719 break; 720 } 721 return new_user_data; 722 } 723 724 static void jv_dm_cback(tBTA_JV_EVT event, tBTA_JV *p_data, void *user_data) 725 { 726 uint32_t id = (uint32_t)user_data; 727 APPL_TRACE_DEBUG2("event:%d, slot id:%d", event, id); 728 switch(event) 729 { 730 case BTA_JV_CREATE_RECORD_EVT: 731 { 732 lock_slot(&slot_lock); 733 rfc_slot_t* rs = find_rfc_slot_by_id(id); 734 if(rs && create_server_sdp_record(rs)) 735 { 736 //now start the rfcomm server after sdp & channel # assigned 737 BTA_JvRfcommStartServer(rs->security, rs->role, rs->scn, MAX_RFC_SESSION, rfcomm_cback, 738 (void*)rs->id); 739 } 740 unlock_slot(&slot_lock); 741 break; 742 } 743 case BTA_JV_DISCOVERY_COMP_EVT: 744 { 745 rfc_slot_t* rs = NULL; 746 lock_slot(&slot_lock); 747 if(p_data->disc_comp.status == BTA_JV_SUCCESS && p_data->disc_comp.scn) 748 { 749 APPL_TRACE_DEBUG3("BTA_JV_DISCOVERY_COMP_EVT, slot id:%d, status:%d, scn:%d", 750 id, p_data->disc_comp.status, p_data->disc_comp.scn); 751 752 rs = find_rfc_slot_by_id(id); 753 if(rs && rs->f.doing_sdp_request) 754 { 755 if(BTA_JvRfcommConnect(rs->security, rs->role, p_data->disc_comp.scn, rs->addr.address, 756 rfcomm_cback, (void*)rs->id) == BTA_JV_SUCCESS) 757 { 758 rs->scn = p_data->disc_comp.scn; 759 rs->f.doing_sdp_request = FALSE; 760 if(!send_app_scn(rs)) 761 cleanup_rfc_slot(rs); 762 } 763 else cleanup_rfc_slot(rs); 764 } 765 else if(rs) 766 { 767 APPL_TRACE_ERROR3("DISCOVERY_COMP_EVT no pending sdp request, slot id:%d, \ 768 flag sdp pending:%d, flag sdp doing:%d", 769 id, rs->f.pending_sdp_request, rs->f.doing_sdp_request); 770 } 771 } 772 else 773 { 774 APPL_TRACE_ERROR3("DISCOVERY_COMP_EVT slot id:%d, failed to find channle, \ 775 status:%d, scn:%d", id, p_data->disc_comp.status, 776 p_data->disc_comp.scn); 777 rs = find_rfc_slot_by_id(id); 778 if(rs) 779 cleanup_rfc_slot(rs); 780 } 781 rs = find_rfc_slot_by_pending_sdp(); 782 if(rs) 783 { 784 APPL_TRACE_DEBUG0("BTA_JV_DISCOVERY_COMP_EVT, start another pending scn sdp request"); 785 tSDP_UUID sdp_uuid; 786 sdp_uuid.len = 16; 787 memcpy(sdp_uuid.uu.uuid128, rs->service_uuid, sizeof(sdp_uuid.uu.uuid128)); 788 BTA_JvStartDiscovery((UINT8*)rs->addr.address, 1, &sdp_uuid, (void*)rs->id); 789 rs->f.pending_sdp_request = FALSE; 790 rs->f.doing_sdp_request = TRUE; 791 } 792 unlock_slot(&slot_lock); 793 break; 794 } 795 default: 796 APPL_TRACE_DEBUG2("unhandled event:%d, slot id:%d", event, id); 797 break; 798 } 799 800 } 801 #define SENT_ALL 2 802 #define SENT_PARTIAL 1 803 #define SENT_NONE 0 804 #define SENT_FAILED (-1) 805 static int send_data_to_app(int fd, BT_HDR *p_buf) 806 { 807 if(p_buf->len == 0) 808 return SENT_ALL; 809 int sent = send(fd, (UINT8 *)(p_buf + 1) + p_buf->offset, p_buf->len, MSG_DONTWAIT); 810 if(sent == p_buf->len) 811 return SENT_ALL; 812 813 if(sent > 0 && sent < p_buf->len) 814 { 815 //sent partial 816 APPL_TRACE_ERROR2("send partial, sent:%d, p_buf->len:%d", sent, p_buf->len); 817 p_buf->offset += sent; 818 p_buf->len -= sent; 819 return SENT_PARTIAL; 820 821 } 822 if(sent < 0 && 823 (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)) 824 { 825 APPL_TRACE_ERROR1("send none, EAGAIN or EWOULDBLOCK, errno:%d", errno); 826 return SENT_NONE; 827 } 828 APPL_TRACE_ERROR3("unknown send() error, sent:%d, p_buf->len:%d, errno:%d", sent, p_buf->len, errno); 829 return SENT_FAILED; 830 } 831 static BOOLEAN flush_incoming_que_on_wr_signal(rfc_slot_t* rs) 832 { 833 while(!GKI_queue_is_empty(&rs->incoming_que)) 834 { 835 BT_HDR *p_buf = GKI_dequeue(&rs->incoming_que); 836 int sent = send_data_to_app(rs->fd, p_buf); 837 switch(sent) 838 { 839 case SENT_NONE: 840 case SENT_PARTIAL: 841 //add it back to the queue at same position 842 GKI_enqueue_head (&rs->incoming_que, p_buf); 843 //monitor the fd to get callback when app is ready to receive data 844 btsock_thread_add_fd(pth, rs->fd, BTSOCK_RFCOMM, SOCK_THREAD_FD_WR, rs->id); 845 return TRUE; 846 case SENT_ALL: 847 GKI_freebuf(p_buf); 848 break; 849 case SENT_FAILED: 850 GKI_freebuf(p_buf); 851 return FALSE; 852 } 853 } 854 855 //app is ready to receive data, tell stack to start the data flow 856 //fix me: need a jv flow control api to serialize the call in stack 857 PORT_FlowControl(rs->rfc_port_handle, TRUE); 858 return TRUE; 859 } 860 void btsock_rfc_signaled(int fd, int flags, uint32_t user_id) 861 { 862 lock_slot(&slot_lock); 863 rfc_slot_t* rs = find_rfc_slot_by_id(user_id); 864 if(rs) 865 { 866 APPL_TRACE_DEBUG3("rfc slot id:%d, fd:%d, flags:%x", rs->id, fd, flags); 867 BOOLEAN need_close = FALSE; 868 if(flags & SOCK_THREAD_FD_RD) 869 { 870 //data available from app, tell stack we have outgoing data 871 if(!rs->f.server) 872 { 873 if(rs->f.connected) 874 BTA_JvRfcommWrite(rs->rfc_handle, (UINT32)rs->id); 875 else 876 { 877 APPL_TRACE_ERROR2("SOCK_THREAD_FD_RD signaled when rfc is not connected, \ 878 slot id:%d, channel:%d", rs->id, rs->scn); 879 need_close = TRUE; 880 } 881 } 882 } 883 if(flags & SOCK_THREAD_FD_WR) 884 { 885 //app is ready to receive more data, tell stack to enable the data flow 886 if(!rs->f.connected || !flush_incoming_que_on_wr_signal(rs)) 887 { 888 need_close = TRUE; 889 APPL_TRACE_ERROR2("SOCK_THREAD_FD_WR signaled when rfc is not connected \ 890 or app closed fd, slot id:%d, channel:%d", rs->id, rs->scn); 891 } 892 893 } 894 if(need_close || (flags & SOCK_THREAD_FD_EXCEPTION)) 895 { 896 APPL_TRACE_DEBUG1("SOCK_THREAD_FD_EXCEPTION, flags:%x", flags); 897 rs->f.closing = TRUE; 898 if(rs->f.server) 899 BTA_JvRfcommStopServer(rs->rfc_handle); 900 else 901 BTA_JvRfcommClose(rs->rfc_handle); 902 } 903 } 904 unlock_slot(&slot_lock); 905 } 906 //stack rfcomm callout functions 907 //[ 908 int bta_co_rfc_data_incoming(void *user_data, BT_HDR *p_buf) 909 { 910 uint32_t id = (uint32_t)user_data; 911 int ret = 0; 912 lock_slot(&slot_lock); 913 rfc_slot_t* rs = find_rfc_slot_by_id(id); 914 if(rs) 915 { 916 917 int sent = send_data_to_app(rs->fd, p_buf); 918 switch(sent) 919 { 920 case SENT_NONE: 921 case SENT_PARTIAL: 922 //add it to the end of the queue 923 GKI_enqueue(&rs->incoming_que, p_buf); 924 //monitor the fd to get callback when app is ready to receive data 925 btsock_thread_add_fd(pth, rs->fd, BTSOCK_RFCOMM, SOCK_THREAD_FD_WR, rs->id); 926 break; 927 case SENT_ALL: 928 GKI_freebuf(p_buf); 929 ret = 1;//enable the data flow 930 break; 931 case SENT_FAILED: 932 GKI_freebuf(p_buf); 933 cleanup_rfc_slot(rs); 934 break; 935 } 936 } 937 unlock_slot(&slot_lock); 938 return ret;//return 0 to disable data flow 939 } 940 int bta_co_rfc_data_outgoing_size(void *user_data, int *size) 941 { 942 uint32_t id = (uint32_t)user_data; 943 int ret = FALSE; 944 *size = 0; 945 lock_slot(&slot_lock); 946 rfc_slot_t* rs = find_rfc_slot_by_id(id); 947 if(rs) 948 { 949 if(ioctl(rs->fd, FIONREAD, size) == 0) 950 { 951 APPL_TRACE_DEBUG2("ioctl read avaiable size:%d, fd:%d", *size, rs->fd); 952 ret = TRUE; 953 } 954 else 955 { 956 APPL_TRACE_ERROR2("ioctl FIONREAD error, errno:%d, fd:%d", errno, rs->fd); 957 cleanup_rfc_slot(rs); 958 } 959 } 960 unlock_slot(&slot_lock); 961 return ret; 962 } 963 int bta_co_rfc_data_outgoing(void *user_data, UINT8* buf, UINT16 size) 964 { 965 uint32_t id = (uint32_t)user_data; 966 int ret = FALSE; 967 lock_slot(&slot_lock); 968 rfc_slot_t* rs = find_rfc_slot_by_id(id); 969 if(rs) 970 { 971 int received = recv(rs->fd, buf, size, 0); 972 if(received == size) 973 ret = TRUE; 974 else 975 { 976 APPL_TRACE_ERROR4("recv error, errno:%d, fd:%d, size:%d, received:%d", 977 errno, rs->fd, size, received); 978 cleanup_rfc_slot(rs); 979 } 980 } 981 unlock_slot(&slot_lock); 982 return ret; 983 } 984 //] 985 986
