1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /* 18 * Communicate with a peer using NFC-DEP, LLCP, SNEP. 19 */ 20 #include "OverrideLog.h" 21 #include "PeerToPeer.h" 22 #include "NfcJniUtil.h" 23 #include "llcp_defs.h" 24 #include "config.h" 25 #include "JavaClassConstants.h" 26 #include <ScopedLocalRef.h> 27 28 /* Some older PN544-based solutions would only send the first SYMM back 29 * (as an initiator) after the full LTO (750ms). But our connect timer 30 * starts immediately, and hence we may timeout if the timer is set to 31 * 1000 ms. Worse, this causes us to immediately connect to the NPP 32 * socket, causing concurrency issues in that stack. Increase the default 33 * timeout to 2000 ms, giving us enough time to complete the first connect. 34 */ 35 #define LLCP_DATA_LINK_TIMEOUT 2000 36 37 using namespace android; 38 39 namespace android 40 { 41 extern void nativeNfcTag_registerNdefTypeHandler (); 42 extern void nativeNfcTag_deregisterNdefTypeHandler (); 43 } 44 45 46 PeerToPeer PeerToPeer::sP2p; 47 const std::string P2pServer::sSnepServiceName ("urn:nfc:sn:snep"); 48 49 50 /******************************************************************************* 51 ** 52 ** Function: PeerToPeer 53 ** 54 ** Description: Initialize member variables. 55 ** 56 ** Returns: None 57 ** 58 *******************************************************************************/ 59 PeerToPeer::PeerToPeer () 60 : mRemoteWKS (0), 61 mIsP2pListening (false), 62 mP2pListenTechMask (NFA_TECHNOLOGY_MASK_A 63 | NFA_TECHNOLOGY_MASK_F 64 | NFA_TECHNOLOGY_MASK_A_ACTIVE 65 | NFA_TECHNOLOGY_MASK_F_ACTIVE), 66 mNextJniHandle (1) 67 { 68 memset (mServers, 0, sizeof(mServers)); 69 memset (mClients, 0, sizeof(mClients)); 70 } 71 72 73 /******************************************************************************* 74 ** 75 ** Function: ~PeerToPeer 76 ** 77 ** Description: Free all resources. 78 ** 79 ** Returns: None 80 ** 81 *******************************************************************************/ 82 PeerToPeer::~PeerToPeer () 83 { 84 } 85 86 87 /******************************************************************************* 88 ** 89 ** Function: getInstance 90 ** 91 ** Description: Get the singleton PeerToPeer object. 92 ** 93 ** Returns: Singleton PeerToPeer object. 94 ** 95 *******************************************************************************/ 96 PeerToPeer& PeerToPeer::getInstance () 97 { 98 return sP2p; 99 } 100 101 102 /******************************************************************************* 103 ** 104 ** Function: initialize 105 ** 106 ** Description: Initialize member variables. 107 ** 108 ** Returns: None 109 ** 110 *******************************************************************************/ 111 void PeerToPeer::initialize () 112 { 113 ALOGD ("PeerToPeer::initialize"); 114 unsigned long num = 0; 115 116 if (GetNumValue ("P2P_LISTEN_TECH_MASK", &num, sizeof (num))) 117 mP2pListenTechMask = num; 118 } 119 120 121 /******************************************************************************* 122 ** 123 ** Function: findServerLocked 124 ** 125 ** Description: Find a PeerToPeer object by connection handle. 126 ** Assumes mMutex is already held 127 ** nfaP2pServerHandle: Connectin handle. 128 ** 129 ** Returns: PeerToPeer object. 130 ** 131 *******************************************************************************/ 132 sp<P2pServer> PeerToPeer::findServerLocked (tNFA_HANDLE nfaP2pServerHandle) 133 { 134 for (int i = 0; i < sMax; i++) 135 { 136 if ( (mServers[i] != NULL) 137 && (mServers[i]->mNfaP2pServerHandle == nfaP2pServerHandle) ) 138 { 139 return (mServers [i]); 140 } 141 } 142 143 // If here, not found 144 return NULL; 145 } 146 147 148 /******************************************************************************* 149 ** 150 ** Function: findServerLocked 151 ** 152 ** Description: Find a PeerToPeer object by connection handle. 153 ** Assumes mMutex is already held 154 ** serviceName: service name. 155 ** 156 ** Returns: PeerToPeer object. 157 ** 158 *******************************************************************************/ 159 sp<P2pServer> PeerToPeer::findServerLocked (tJNI_HANDLE jniHandle) 160 { 161 for (int i = 0; i < sMax; i++) 162 { 163 if ( (mServers[i] != NULL) 164 && (mServers[i]->mJniHandle == jniHandle) ) 165 { 166 return (mServers [i]); 167 } 168 } 169 170 // If here, not found 171 return NULL; 172 } 173 174 175 /******************************************************************************* 176 ** 177 ** Function: findServerLocked 178 ** 179 ** Description: Find a PeerToPeer object by service name 180 ** Assumes mMutex is already heldf 181 ** serviceName: service name. 182 ** 183 ** Returns: PeerToPeer object. 184 ** 185 *******************************************************************************/ 186 sp<P2pServer> PeerToPeer::findServerLocked (const char *serviceName) 187 { 188 for (int i = 0; i < sMax; i++) 189 { 190 if ( (mServers[i] != NULL) && (mServers[i]->mServiceName.compare(serviceName) == 0) ) 191 return (mServers [i]); 192 } 193 194 // If here, not found 195 return NULL; 196 } 197 198 199 /******************************************************************************* 200 ** 201 ** Function: registerServer 202 ** 203 ** Description: Let a server start listening for peer's connection request. 204 ** jniHandle: Connection handle. 205 ** serviceName: Server's service name. 206 ** 207 ** Returns: True if ok. 208 ** 209 *******************************************************************************/ 210 bool PeerToPeer::registerServer (tJNI_HANDLE jniHandle, const char *serviceName) 211 { 212 static const char fn [] = "PeerToPeer::registerServer"; 213 ALOGD ("%s: enter; service name: %s JNI handle: %u", fn, serviceName, jniHandle); 214 sp<P2pServer> pSrv = NULL; 215 216 mMutex.lock(); 217 // Check if already registered 218 if ((pSrv = findServerLocked(serviceName)) != NULL) 219 { 220 ALOGD ("%s: service name=%s already registered, handle: 0x%04x", fn, serviceName, pSrv->mNfaP2pServerHandle); 221 222 // Update JNI handle 223 pSrv->mJniHandle = jniHandle; 224 mMutex.unlock(); 225 return (true); 226 } 227 228 for (int ii = 0; ii < sMax; ii++) 229 { 230 if (mServers[ii] == NULL) 231 { 232 pSrv = mServers[ii] = new P2pServer(jniHandle, serviceName); 233 234 ALOGD ("%s: added new p2p server index: %d handle: %u name: %s", fn, ii, jniHandle, serviceName); 235 break; 236 } 237 } 238 mMutex.unlock(); 239 240 if (pSrv == NULL) 241 { 242 ALOGE ("%s: service name=%s no free entry", fn, serviceName); 243 return (false); 244 } 245 246 if (pSrv->registerWithStack()) { 247 ALOGD ("%s: got new p2p server h=0x%X", fn, pSrv->mNfaP2pServerHandle); 248 return (true); 249 } else { 250 ALOGE ("%s: invalid server handle", fn); 251 removeServer (jniHandle); 252 return (false); 253 } 254 } 255 256 257 /******************************************************************************* 258 ** 259 ** Function: removeServer 260 ** 261 ** Description: Free resources related to a server. 262 ** jniHandle: Connection handle. 263 ** 264 ** Returns: None 265 ** 266 *******************************************************************************/ 267 void PeerToPeer::removeServer (tJNI_HANDLE jniHandle) 268 { 269 static const char fn [] = "PeerToPeer::removeServer"; 270 271 AutoMutex mutex(mMutex); 272 273 for (int i = 0; i < sMax; i++) 274 { 275 if ( (mServers[i] != NULL) && (mServers[i]->mJniHandle == jniHandle) ) 276 { 277 ALOGD ("%s: server jni_handle: %u; nfa_handle: 0x%04x; name: %s; index=%d", 278 fn, jniHandle, mServers[i]->mNfaP2pServerHandle, mServers[i]->mServiceName.c_str(), i); 279 280 mServers [i] = NULL; 281 return; 282 } 283 } 284 ALOGE ("%s: unknown server jni handle: %u", fn, jniHandle); 285 } 286 287 288 /******************************************************************************* 289 ** 290 ** Function: llcpActivatedHandler 291 ** 292 ** Description: Receive LLLCP-activated event from stack. 293 ** nat: JVM-related data. 294 ** activated: Event data. 295 ** 296 ** Returns: None 297 ** 298 *******************************************************************************/ 299 void PeerToPeer::llcpActivatedHandler (nfc_jni_native_data* nat, tNFA_LLCP_ACTIVATED& activated) 300 { 301 static const char fn [] = "PeerToPeer::llcpActivatedHandler"; 302 ALOGD ("%s: enter", fn); 303 304 //no longer need to receive NDEF message from a tag 305 android::nativeNfcTag_deregisterNdefTypeHandler (); 306 307 mRemoteWKS = activated.remote_wks; 308 309 JNIEnv* e = NULL; 310 ScopedAttach attach(nat->vm, &e); 311 if (e == NULL) 312 { 313 ALOGE ("%s: jni env is null", fn); 314 return; 315 } 316 317 ALOGD ("%s: get object class", fn); 318 ScopedLocalRef<jclass> tag_cls(e, e->GetObjectClass(nat->cached_P2pDevice)); 319 if (e->ExceptionCheck()) { 320 e->ExceptionClear(); 321 ALOGE ("%s: fail get p2p device", fn); 322 return; 323 } 324 325 ALOGD ("%s: instantiate", fn); 326 /* New target instance */ 327 jmethodID ctor = e->GetMethodID(tag_cls.get(), "<init>", "()V"); 328 ScopedLocalRef<jobject> tag(e, e->NewObject(tag_cls.get(), ctor)); 329 330 /* Set P2P Target mode */ 331 jfieldID f = e->GetFieldID(tag_cls.get(), "mMode", "I"); 332 333 if (activated.is_initiator == TRUE) { 334 ALOGD ("%s: p2p initiator", fn); 335 e->SetIntField(tag.get(), f, (jint) MODE_P2P_INITIATOR); 336 } else { 337 ALOGD ("%s: p2p target", fn); 338 e->SetIntField(tag.get(), f, (jint) MODE_P2P_TARGET); 339 } 340 341 /* Set tag handle */ 342 f = e->GetFieldID(tag_cls.get(), "mHandle", "I"); 343 e->SetIntField(tag.get(), f, (jint) 0x1234); // ?? This handle is not used for anything 344 345 if (nat->tag != NULL) { 346 e->DeleteGlobalRef(nat->tag); 347 } 348 nat->tag = e->NewGlobalRef(tag.get()); 349 350 ALOGD ("%s: notify nfc service", fn); 351 352 /* Notify manager that new a P2P device was found */ 353 e->CallVoidMethod(nat->manager, android::gCachedNfcManagerNotifyLlcpLinkActivation, tag.get()); 354 if (e->ExceptionCheck()) { 355 e->ExceptionClear(); 356 ALOGE ("%s: fail notify", fn); 357 } 358 359 ALOGD ("%s: exit", fn); 360 } 361 362 363 /******************************************************************************* 364 ** 365 ** Function: llcpDeactivatedHandler 366 ** 367 ** Description: Receive LLLCP-deactivated event from stack. 368 ** nat: JVM-related data. 369 ** deactivated: Event data. 370 ** 371 ** Returns: None 372 ** 373 *******************************************************************************/ 374 void PeerToPeer::llcpDeactivatedHandler (nfc_jni_native_data* nat, tNFA_LLCP_DEACTIVATED& /*deactivated*/) 375 { 376 static const char fn [] = "PeerToPeer::llcpDeactivatedHandler"; 377 ALOGD ("%s: enter", fn); 378 379 JNIEnv* e = NULL; 380 ScopedAttach attach(nat->vm, &e); 381 if (e == NULL) 382 { 383 ALOGE ("%s: jni env is null", fn); 384 return; 385 } 386 387 ALOGD ("%s: notify nfc service", fn); 388 /* Notify manager that the LLCP is lost or deactivated */ 389 e->CallVoidMethod (nat->manager, android::gCachedNfcManagerNotifyLlcpLinkDeactivated, nat->tag); 390 if (e->ExceptionCheck()) 391 { 392 e->ExceptionClear(); 393 ALOGE ("%s: fail notify", fn); 394 } 395 396 //let the tag-reading code handle NDEF data event 397 android::nativeNfcTag_registerNdefTypeHandler (); 398 ALOGD ("%s: exit", fn); 399 } 400 401 void PeerToPeer::llcpFirstPacketHandler (nfc_jni_native_data* nat) 402 { 403 static const char fn [] = "PeerToPeer::llcpFirstPacketHandler"; 404 ALOGD ("%s: enter", fn); 405 406 JNIEnv* e = NULL; 407 ScopedAttach attach(nat->vm, &e); 408 if (e == NULL) 409 { 410 ALOGE ("%s: jni env is null", fn); 411 return; 412 } 413 414 ALOGD ("%s: notify nfc service", fn); 415 /* Notify manager that the LLCP is lost or deactivated */ 416 e->CallVoidMethod (nat->manager, android::gCachedNfcManagerNotifyLlcpFirstPacketReceived, nat->tag); 417 if (e->ExceptionCheck()) 418 { 419 e->ExceptionClear(); 420 ALOGE ("%s: fail notify", fn); 421 } 422 423 ALOGD ("%s: exit", fn); 424 425 } 426 /******************************************************************************* 427 ** 428 ** Function: accept 429 ** 430 ** Description: Accept a peer's request to connect. 431 ** serverJniHandle: Server's handle. 432 ** connJniHandle: Connection handle. 433 ** maxInfoUnit: Maximum information unit. 434 ** recvWindow: Receive window size. 435 ** 436 ** Returns: True if ok. 437 ** 438 *******************************************************************************/ 439 bool PeerToPeer::accept (tJNI_HANDLE serverJniHandle, tJNI_HANDLE connJniHandle, int maxInfoUnit, int recvWindow) 440 { 441 static const char fn [] = "PeerToPeer::accept"; 442 sp<P2pServer> pSrv = NULL; 443 444 ALOGD ("%s: enter; server jni handle: %u; conn jni handle: %u; maxInfoUnit: %d; recvWindow: %d", fn, 445 serverJniHandle, connJniHandle, maxInfoUnit, recvWindow); 446 447 mMutex.lock(); 448 if ((pSrv = findServerLocked (serverJniHandle)) == NULL) 449 { 450 ALOGE ("%s: unknown server jni handle: %u", fn, serverJniHandle); 451 mMutex.unlock(); 452 return (false); 453 } 454 mMutex.unlock(); 455 456 return pSrv->accept(serverJniHandle, connJniHandle, maxInfoUnit, recvWindow); 457 } 458 459 460 /******************************************************************************* 461 ** 462 ** Function: deregisterServer 463 ** 464 ** Description: Stop a P2pServer from listening for peer. 465 ** 466 ** Returns: True if ok. 467 ** 468 *******************************************************************************/ 469 bool PeerToPeer::deregisterServer (tJNI_HANDLE jniHandle) 470 { 471 static const char fn [] = "PeerToPeer::deregisterServer"; 472 ALOGD ("%s: enter; JNI handle: %u", fn, jniHandle); 473 tNFA_STATUS nfaStat = NFA_STATUS_FAILED; 474 sp<P2pServer> pSrv = NULL; 475 476 mMutex.lock(); 477 if ((pSrv = findServerLocked (jniHandle)) == NULL) 478 { 479 ALOGE ("%s: unknown service handle: %u", fn, jniHandle); 480 mMutex.unlock(); 481 return (false); 482 } 483 mMutex.unlock(); 484 485 { 486 // Server does not call NFA_P2pDisconnect(), so unblock the accept() 487 SyncEventGuard guard (pSrv->mConnRequestEvent); 488 pSrv->mConnRequestEvent.notifyOne(); 489 } 490 491 nfaStat = NFA_P2pDeregister (pSrv->mNfaP2pServerHandle); 492 if (nfaStat != NFA_STATUS_OK) 493 { 494 ALOGE ("%s: deregister error=0x%X", fn, nfaStat); 495 } 496 497 removeServer (jniHandle); 498 499 ALOGD ("%s: exit", fn); 500 return true; 501 } 502 503 504 /******************************************************************************* 505 ** 506 ** Function: createClient 507 ** 508 ** Description: Create a P2pClient object for a new out-bound connection. 509 ** jniHandle: Connection handle. 510 ** miu: Maximum information unit. 511 ** rw: Receive window size. 512 ** 513 ** Returns: True if ok. 514 ** 515 *******************************************************************************/ 516 bool PeerToPeer::createClient (tJNI_HANDLE jniHandle, UINT16 miu, UINT8 rw) 517 { 518 static const char fn [] = "PeerToPeer::createClient"; 519 int i = 0; 520 ALOGD ("%s: enter: jni h: %u miu: %u rw: %u", fn, jniHandle, miu, rw); 521 522 mMutex.lock(); 523 sp<P2pClient> client = NULL; 524 for (i = 0; i < sMax; i++) 525 { 526 if (mClients[i] == NULL) 527 { 528 mClients [i] = client = new P2pClient(); 529 530 mClients [i]->mClientConn->mJniHandle = jniHandle; 531 mClients [i]->mClientConn->mMaxInfoUnit = miu; 532 mClients [i]->mClientConn->mRecvWindow = rw; 533 break; 534 } 535 } 536 mMutex.unlock(); 537 538 if (client == NULL) 539 { 540 ALOGE ("%s: fail", fn); 541 return (false); 542 } 543 544 ALOGD ("%s: pClient: 0x%p assigned for client jniHandle: %u", fn, client.get(), jniHandle); 545 546 { 547 SyncEventGuard guard (mClients[i]->mRegisteringEvent); 548 NFA_P2pRegisterClient (NFA_P2P_DLINK_TYPE, nfaClientCallback); 549 mClients[i]->mRegisteringEvent.wait(); //wait for NFA_P2P_REG_CLIENT_EVT 550 } 551 552 if (mClients[i]->mNfaP2pClientHandle != NFA_HANDLE_INVALID) 553 { 554 ALOGD ("%s: exit; new client jniHandle: %u NFA Handle: 0x%04x", fn, jniHandle, client->mClientConn->mNfaConnHandle); 555 return (true); 556 } 557 else 558 { 559 ALOGE ("%s: FAILED; new client jniHandle: %u NFA Handle: 0x%04x", fn, jniHandle, client->mClientConn->mNfaConnHandle); 560 removeConn (jniHandle); 561 return (false); 562 } 563 } 564 565 566 /******************************************************************************* 567 ** 568 ** Function: removeConn 569 ** 570 ** Description: Free resources related to a connection. 571 ** jniHandle: Connection handle. 572 ** 573 ** Returns: None 574 ** 575 *******************************************************************************/ 576 void PeerToPeer::removeConn(tJNI_HANDLE jniHandle) 577 { 578 static const char fn[] = "PeerToPeer::removeConn"; 579 580 AutoMutex mutex(mMutex); 581 // If the connection is a for a client, delete the client itself 582 for (size_t ii = 0; ii < sMax; ii++) 583 { 584 if ((mClients[ii] != NULL) && (mClients[ii]->mClientConn->mJniHandle == jniHandle)) 585 { 586 if (mClients[ii]->mNfaP2pClientHandle != NFA_HANDLE_INVALID) 587 NFA_P2pDeregister (mClients[ii]->mNfaP2pClientHandle); 588 589 mClients[ii] = NULL; 590 ALOGD ("%s: deleted client handle: %u index: %u", fn, jniHandle, ii); 591 return; 592 } 593 } 594 595 // If the connection is for a server, just delete the connection 596 for (size_t ii = 0; ii < sMax; ii++) 597 { 598 if (mServers[ii] != NULL) 599 { 600 if (mServers[ii]->removeServerConnection(jniHandle)) { 601 return; 602 } 603 } 604 } 605 606 ALOGE ("%s: could not find handle: %u", fn, jniHandle); 607 } 608 609 610 /******************************************************************************* 611 ** 612 ** Function: connectConnOriented 613 ** 614 ** Description: Estabish a connection-oriented connection to a peer. 615 ** jniHandle: Connection handle. 616 ** serviceName: Peer's service name. 617 ** 618 ** Returns: True if ok. 619 ** 620 *******************************************************************************/ 621 bool PeerToPeer::connectConnOriented (tJNI_HANDLE jniHandle, const char* serviceName) 622 { 623 static const char fn [] = "PeerToPeer::connectConnOriented"; 624 ALOGD ("%s: enter; h: %u service name=%s", fn, jniHandle, serviceName); 625 bool stat = createDataLinkConn (jniHandle, serviceName, 0); 626 ALOGD ("%s: exit; h: %u stat: %u", fn, jniHandle, stat); 627 return stat; 628 } 629 630 631 /******************************************************************************* 632 ** 633 ** Function: connectConnOriented 634 ** 635 ** Description: Estabish a connection-oriented connection to a peer. 636 ** jniHandle: Connection handle. 637 ** destinationSap: Peer's service access point. 638 ** 639 ** Returns: True if ok. 640 ** 641 *******************************************************************************/ 642 bool PeerToPeer::connectConnOriented (tJNI_HANDLE jniHandle, UINT8 destinationSap) 643 { 644 static const char fn [] = "PeerToPeer::connectConnOriented"; 645 ALOGD ("%s: enter; h: %u dest sap: 0x%X", fn, jniHandle, destinationSap); 646 bool stat = createDataLinkConn (jniHandle, NULL, destinationSap); 647 ALOGD ("%s: exit; h: %u stat: %u", fn, jniHandle, stat); 648 return stat; 649 } 650 651 652 /******************************************************************************* 653 ** 654 ** Function: createDataLinkConn 655 ** 656 ** Description: Estabish a connection-oriented connection to a peer. 657 ** jniHandle: Connection handle. 658 ** serviceName: Peer's service name. 659 ** destinationSap: Peer's service access point. 660 ** 661 ** Returns: True if ok. 662 ** 663 *******************************************************************************/ 664 bool PeerToPeer::createDataLinkConn (tJNI_HANDLE jniHandle, const char* serviceName, UINT8 destinationSap) 665 { 666 static const char fn [] = "PeerToPeer::createDataLinkConn"; 667 ALOGD ("%s: enter", fn); 668 tNFA_STATUS nfaStat = NFA_STATUS_FAILED; 669 sp<P2pClient> pClient = NULL; 670 671 if ((pClient = findClient (jniHandle)) == NULL) 672 { 673 ALOGE ("%s: can't find client, JNI handle: %u", fn, jniHandle); 674 return (false); 675 } 676 677 { 678 SyncEventGuard guard (pClient->mConnectingEvent); 679 pClient->mIsConnecting = true; 680 681 if (serviceName) 682 nfaStat = NFA_P2pConnectByName (pClient->mNfaP2pClientHandle, 683 const_cast<char*>(serviceName), pClient->mClientConn->mMaxInfoUnit, 684 pClient->mClientConn->mRecvWindow); 685 else if (destinationSap) 686 nfaStat = NFA_P2pConnectBySap (pClient->mNfaP2pClientHandle, destinationSap, 687 pClient->mClientConn->mMaxInfoUnit, pClient->mClientConn->mRecvWindow); 688 if (nfaStat == NFA_STATUS_OK) 689 { 690 ALOGD ("%s: wait for connected event mConnectingEvent: 0x%p", fn, pClient.get()); 691 pClient->mConnectingEvent.wait(); 692 } 693 } 694 695 if (nfaStat == NFA_STATUS_OK) 696 { 697 if (pClient->mClientConn->mNfaConnHandle == NFA_HANDLE_INVALID) 698 { 699 removeConn (jniHandle); 700 nfaStat = NFA_STATUS_FAILED; 701 } 702 else 703 pClient->mIsConnecting = false; 704 } 705 else 706 { 707 removeConn (jniHandle); 708 ALOGE ("%s: fail; error=0x%X", fn, nfaStat); 709 } 710 711 ALOGD ("%s: exit", fn); 712 return nfaStat == NFA_STATUS_OK; 713 } 714 715 716 /******************************************************************************* 717 ** 718 ** Function: findClient 719 ** 720 ** Description: Find a PeerToPeer object with a client connection handle. 721 ** nfaConnHandle: Connection handle. 722 ** 723 ** Returns: PeerToPeer object. 724 ** 725 *******************************************************************************/ 726 sp<P2pClient> PeerToPeer::findClient (tNFA_HANDLE nfaConnHandle) 727 { 728 AutoMutex mutex(mMutex); 729 for (int i = 0; i < sMax; i++) 730 { 731 if ((mClients[i] != NULL) && (mClients[i]->mNfaP2pClientHandle == nfaConnHandle)) 732 return (mClients[i]); 733 } 734 return (NULL); 735 } 736 737 738 /******************************************************************************* 739 ** 740 ** Function: findClient 741 ** 742 ** Description: Find a PeerToPeer object with a client connection handle. 743 ** jniHandle: Connection handle. 744 ** 745 ** Returns: PeerToPeer object. 746 ** 747 *******************************************************************************/ 748 sp<P2pClient> PeerToPeer::findClient (tJNI_HANDLE jniHandle) 749 { 750 AutoMutex mutex(mMutex); 751 for (int i = 0; i < sMax; i++) 752 { 753 if ((mClients[i] != NULL) && (mClients[i]->mClientConn->mJniHandle == jniHandle)) 754 return (mClients[i]); 755 } 756 return (NULL); 757 } 758 759 760 /******************************************************************************* 761 ** 762 ** Function: findClientCon 763 ** 764 ** Description: Find a PeerToPeer object with a client connection handle. 765 ** nfaConnHandle: Connection handle. 766 ** 767 ** Returns: PeerToPeer object. 768 ** 769 *******************************************************************************/ 770 sp<P2pClient> PeerToPeer::findClientCon (tNFA_HANDLE nfaConnHandle) 771 { 772 AutoMutex mutex(mMutex); 773 for (int i = 0; i < sMax; i++) 774 { 775 if ((mClients[i] != NULL) && (mClients[i]->mClientConn->mNfaConnHandle == nfaConnHandle)) 776 return (mClients[i]); 777 } 778 return (NULL); 779 } 780 781 782 /******************************************************************************* 783 ** 784 ** Function: findConnection 785 ** 786 ** Description: Find a PeerToPeer object with a connection handle. 787 ** nfaConnHandle: Connection handle. 788 ** 789 ** Returns: PeerToPeer object. 790 ** 791 *******************************************************************************/ 792 sp<NfaConn> PeerToPeer::findConnection (tNFA_HANDLE nfaConnHandle) 793 { 794 AutoMutex mutex(mMutex); 795 // First, look through all the client control blocks 796 for (size_t ii = 0; ii < sMax; ii++) 797 { 798 if ( (mClients[ii] != NULL) 799 && (mClients[ii]->mClientConn->mNfaConnHandle == nfaConnHandle) ) { 800 return mClients[ii]->mClientConn; 801 } 802 } 803 804 // Not found yet. Look through all the server control blocks 805 for (size_t ii = 0; ii < sMax; ii++) 806 { 807 if (mServers[ii] != NULL) 808 { 809 sp<NfaConn> conn = mServers[ii]->findServerConnection(nfaConnHandle); 810 if (conn != NULL) { 811 return conn; 812 } 813 } 814 } 815 816 // Not found... 817 return NULL; 818 } 819 820 821 /******************************************************************************* 822 ** 823 ** Function: findConnection 824 ** 825 ** Description: Find a PeerToPeer object with a connection handle. 826 ** jniHandle: Connection handle. 827 ** 828 ** Returns: PeerToPeer object. 829 ** 830 *******************************************************************************/ 831 sp<NfaConn> PeerToPeer::findConnection (tJNI_HANDLE jniHandle) 832 { 833 AutoMutex mutex(mMutex); 834 // First, look through all the client control blocks 835 for (size_t ii = 0; ii < sMax; ii++) 836 { 837 if ( (mClients[ii] != NULL) 838 && (mClients[ii]->mClientConn->mJniHandle == jniHandle) ) { 839 return mClients[ii]->mClientConn; 840 } 841 } 842 843 // Not found yet. Look through all the server control blocks 844 for (size_t ii = 0; ii < sMax; ii++) 845 { 846 if (mServers[ii] != NULL) 847 { 848 sp<NfaConn> conn = mServers[ii]->findServerConnection(jniHandle); 849 if (conn != NULL) { 850 return conn; 851 } 852 } 853 } 854 855 // Not found... 856 return NULL; 857 } 858 859 860 /******************************************************************************* 861 ** 862 ** Function: send 863 ** 864 ** Description: Send data to peer. 865 ** jniHandle: Handle of connection. 866 ** buffer: Buffer of data. 867 ** bufferLen: Length of data. 868 ** 869 ** Returns: True if ok. 870 ** 871 *******************************************************************************/ 872 bool PeerToPeer::send (tJNI_HANDLE jniHandle, UINT8 *buffer, UINT16 bufferLen) 873 { 874 static const char fn [] = "PeerToPeer::send"; 875 tNFA_STATUS nfaStat = NFA_STATUS_FAILED; 876 sp<NfaConn> pConn = NULL; 877 878 if ((pConn = findConnection (jniHandle)) == NULL) 879 { 880 ALOGE ("%s: can't find connection handle: %u", fn, jniHandle); 881 return (false); 882 } 883 884 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: send data; jniHandle: %u nfaHandle: 0x%04X", 885 fn, pConn->mJniHandle, pConn->mNfaConnHandle); 886 887 while (true) 888 { 889 SyncEventGuard guard (pConn->mCongEvent); 890 nfaStat = NFA_P2pSendData (pConn->mNfaConnHandle, bufferLen, buffer); 891 if (nfaStat == NFA_STATUS_CONGESTED) 892 pConn->mCongEvent.wait (); //wait for NFA_P2P_CONGEST_EVT 893 else 894 break; 895 896 if (pConn->mNfaConnHandle == NFA_HANDLE_INVALID) //peer already disconnected 897 { 898 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: peer disconnected", fn); 899 return (false); 900 } 901 } 902 903 if (nfaStat == NFA_STATUS_OK) 904 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: exit OK; JNI handle: %u NFA Handle: 0x%04x", fn, jniHandle, pConn->mNfaConnHandle); 905 else 906 ALOGE ("%s: Data not sent; JNI handle: %u NFA Handle: 0x%04x error: 0x%04x", 907 fn, jniHandle, pConn->mNfaConnHandle, nfaStat); 908 909 return nfaStat == NFA_STATUS_OK; 910 } 911 912 913 /******************************************************************************* 914 ** 915 ** Function: receive 916 ** 917 ** Description: Receive data from peer. 918 ** jniHandle: Handle of connection. 919 ** buffer: Buffer to store data. 920 ** bufferLen: Max length of buffer. 921 ** actualLen: Actual length received. 922 ** 923 ** Returns: True if ok. 924 ** 925 *******************************************************************************/ 926 bool PeerToPeer::receive (tJNI_HANDLE jniHandle, UINT8* buffer, UINT16 bufferLen, UINT16& actualLen) 927 { 928 static const char fn [] = "PeerToPeer::receive"; 929 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: enter; jniHandle: %u bufferLen: %u", fn, jniHandle, bufferLen); 930 sp<NfaConn> pConn = NULL; 931 tNFA_STATUS stat = NFA_STATUS_FAILED; 932 UINT32 actualDataLen2 = 0; 933 BOOLEAN isMoreData = TRUE; 934 bool retVal = false; 935 936 if ((pConn = findConnection (jniHandle)) == NULL) 937 { 938 ALOGE ("%s: can't find connection handle: %u", fn, jniHandle); 939 return (false); 940 } 941 942 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: jniHandle: %u nfaHandle: 0x%04X buf len=%u", fn, pConn->mJniHandle, pConn->mNfaConnHandle, bufferLen); 943 944 while (pConn->mNfaConnHandle != NFA_HANDLE_INVALID) 945 { 946 //NFA_P2pReadData() is synchronous 947 stat = NFA_P2pReadData (pConn->mNfaConnHandle, bufferLen, &actualDataLen2, buffer, &isMoreData); 948 if ((stat == NFA_STATUS_OK) && (actualDataLen2 > 0)) //received some data 949 { 950 actualLen = (UINT16) actualDataLen2; 951 retVal = true; 952 break; 953 } 954 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: waiting for data...", fn); 955 { 956 SyncEventGuard guard (pConn->mReadEvent); 957 pConn->mReadEvent.wait(); 958 } 959 } //while 960 961 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: exit; nfa h: 0x%X ok: %u actual len: %u", fn, pConn->mNfaConnHandle, retVal, actualLen); 962 return retVal; 963 } 964 965 966 /******************************************************************************* 967 ** 968 ** Function: disconnectConnOriented 969 ** 970 ** Description: Disconnect a connection-oriented connection with peer. 971 ** jniHandle: Handle of connection. 972 ** 973 ** Returns: True if ok. 974 ** 975 *******************************************************************************/ 976 bool PeerToPeer::disconnectConnOriented (tJNI_HANDLE jniHandle) 977 { 978 static const char fn [] = "PeerToPeer::disconnectConnOriented"; 979 tNFA_STATUS nfaStat = NFA_STATUS_FAILED; 980 sp<P2pClient> pClient = NULL; 981 sp<NfaConn> pConn = NULL; 982 983 ALOGD ("%s: enter; jni handle: %u", fn, jniHandle); 984 985 if ((pConn = findConnection(jniHandle)) == NULL) 986 { 987 ALOGE ("%s: can't find connection handle: %u", fn, jniHandle); 988 return (false); 989 } 990 991 // If this is a client, he may not be connected yet, so unblock him just in case 992 if ( ((pClient = findClient(jniHandle)) != NULL) && (pClient->mIsConnecting) ) 993 { 994 SyncEventGuard guard (pClient->mConnectingEvent); 995 pClient->mConnectingEvent.notifyOne(); 996 return (true); 997 } 998 999 { 1000 SyncEventGuard guard1 (pConn->mCongEvent); 1001 pConn->mCongEvent.notifyOne (); //unblock send() if congested 1002 } 1003 { 1004 SyncEventGuard guard2 (pConn->mReadEvent); 1005 pConn->mReadEvent.notifyOne (); //unblock receive() 1006 } 1007 1008 if (pConn->mNfaConnHandle != NFA_HANDLE_INVALID) 1009 { 1010 ALOGD ("%s: try disconn nfa h=0x%04X", fn, pConn->mNfaConnHandle); 1011 SyncEventGuard guard (pConn->mDisconnectingEvent); 1012 nfaStat = NFA_P2pDisconnect (pConn->mNfaConnHandle, FALSE); 1013 1014 if (nfaStat != NFA_STATUS_OK) 1015 ALOGE ("%s: fail p2p disconnect", fn); 1016 else 1017 pConn->mDisconnectingEvent.wait(); 1018 } 1019 1020 mDisconnectMutex.lock (); 1021 removeConn (jniHandle); 1022 mDisconnectMutex.unlock (); 1023 1024 ALOGD ("%s: exit; jni handle: %u", fn, jniHandle); 1025 return nfaStat == NFA_STATUS_OK; 1026 } 1027 1028 1029 /******************************************************************************* 1030 ** 1031 ** Function: getRemoteMaxInfoUnit 1032 ** 1033 ** Description: Get peer's max information unit. 1034 ** jniHandle: Handle of the connection. 1035 ** 1036 ** Returns: Peer's max information unit. 1037 ** 1038 *******************************************************************************/ 1039 UINT16 PeerToPeer::getRemoteMaxInfoUnit (tJNI_HANDLE jniHandle) 1040 { 1041 static const char fn [] = "PeerToPeer::getRemoteMaxInfoUnit"; 1042 sp<NfaConn> pConn = NULL; 1043 1044 if ((pConn = findConnection(jniHandle)) == NULL) 1045 { 1046 ALOGE ("%s: can't find client jniHandle: %u", fn, jniHandle); 1047 return 0; 1048 } 1049 ALOGD ("%s: jniHandle: %u MIU: %u", fn, jniHandle, pConn->mRemoteMaxInfoUnit); 1050 return (pConn->mRemoteMaxInfoUnit); 1051 } 1052 1053 1054 /******************************************************************************* 1055 ** 1056 ** Function: getRemoteRecvWindow 1057 ** 1058 ** Description: Get peer's receive window size. 1059 ** jniHandle: Handle of the connection. 1060 ** 1061 ** Returns: Peer's receive window size. 1062 ** 1063 *******************************************************************************/ 1064 UINT8 PeerToPeer::getRemoteRecvWindow (tJNI_HANDLE jniHandle) 1065 { 1066 static const char fn [] = "PeerToPeer::getRemoteRecvWindow"; 1067 ALOGD ("%s: client jni handle: %u", fn, jniHandle); 1068 sp<NfaConn> pConn = NULL; 1069 1070 if ((pConn = findConnection(jniHandle)) == NULL) 1071 { 1072 ALOGE ("%s: can't find client", fn); 1073 return 0; 1074 } 1075 return pConn->mRemoteRecvWindow; 1076 } 1077 1078 /******************************************************************************* 1079 ** 1080 ** Function: setP2pListenMask 1081 ** 1082 ** Description: Sets the p2p listen technology mask. 1083 ** p2pListenMask: the p2p listen mask to be set? 1084 ** 1085 ** Returns: None 1086 ** 1087 *******************************************************************************/ 1088 void PeerToPeer::setP2pListenMask (tNFA_TECHNOLOGY_MASK p2pListenMask) { 1089 mP2pListenTechMask = p2pListenMask; 1090 } 1091 1092 /******************************************************************************* 1093 ** 1094 ** Function: enableP2pListening 1095 ** 1096 ** Description: Start/stop polling/listening to peer that supports P2P. 1097 ** isEnable: Is enable polling/listening? 1098 ** 1099 ** Returns: None 1100 ** 1101 *******************************************************************************/ 1102 void PeerToPeer::enableP2pListening (bool isEnable) 1103 { 1104 static const char fn [] = "PeerToPeer::enableP2pListening"; 1105 tNFA_STATUS nfaStat = NFA_STATUS_FAILED; 1106 1107 ALOGD ("%s: enter isEnable: %u mIsP2pListening: %u", fn, isEnable, mIsP2pListening); 1108 1109 // If request to enable P2P listening, and we were not already listening 1110 if ( (isEnable == true) && (mIsP2pListening == false) && (mP2pListenTechMask != 0) ) 1111 { 1112 SyncEventGuard guard (mSetTechEvent); 1113 if ((nfaStat = NFA_SetP2pListenTech (mP2pListenTechMask)) == NFA_STATUS_OK) 1114 { 1115 mSetTechEvent.wait (); 1116 mIsP2pListening = true; 1117 } 1118 else 1119 ALOGE ("%s: fail enable listen; error=0x%X", fn, nfaStat); 1120 } 1121 else if ( (isEnable == false) && (mIsP2pListening == true) ) 1122 { 1123 SyncEventGuard guard (mSetTechEvent); 1124 // Request to disable P2P listening, check if it was enabled 1125 if ((nfaStat = NFA_SetP2pListenTech(0)) == NFA_STATUS_OK) 1126 { 1127 mSetTechEvent.wait (); 1128 mIsP2pListening = false; 1129 } 1130 else 1131 ALOGE ("%s: fail disable listen; error=0x%X", fn, nfaStat); 1132 } 1133 ALOGD ("%s: exit; mIsP2pListening: %u", fn, mIsP2pListening); 1134 } 1135 1136 1137 /******************************************************************************* 1138 ** 1139 ** Function: handleNfcOnOff 1140 ** 1141 ** Description: Handle events related to turning NFC on/off by the user. 1142 ** isOn: Is NFC turning on? 1143 ** 1144 ** Returns: None 1145 ** 1146 *******************************************************************************/ 1147 void PeerToPeer::handleNfcOnOff (bool isOn) 1148 { 1149 static const char fn [] = "PeerToPeer::handleNfcOnOff"; 1150 ALOGD ("%s: enter; is on=%u", fn, isOn); 1151 1152 mIsP2pListening = false; // In both cases, P2P will not be listening 1153 1154 AutoMutex mutex(mMutex); 1155 if (isOn) 1156 { 1157 // Start with no clients or servers 1158 memset (mServers, 0, sizeof(mServers)); 1159 memset (mClients, 0, sizeof(mClients)); 1160 } 1161 else 1162 { 1163 // Disconnect through all the clients 1164 for (size_t ii = 0; ii < sMax; ii++) 1165 { 1166 if (mClients[ii] != NULL) 1167 { 1168 if (mClients[ii]->mClientConn->mNfaConnHandle == NFA_HANDLE_INVALID) 1169 { 1170 SyncEventGuard guard (mClients[ii]->mConnectingEvent); 1171 mClients[ii]->mConnectingEvent.notifyOne(); 1172 } 1173 else 1174 { 1175 mClients[ii]->mClientConn->mNfaConnHandle = NFA_HANDLE_INVALID; 1176 { 1177 SyncEventGuard guard1 (mClients[ii]->mClientConn->mCongEvent); 1178 mClients[ii]->mClientConn->mCongEvent.notifyOne (); //unblock send() 1179 } 1180 { 1181 SyncEventGuard guard2 (mClients[ii]->mClientConn->mReadEvent); 1182 mClients[ii]->mClientConn->mReadEvent.notifyOne (); //unblock receive() 1183 } 1184 } 1185 } 1186 } //loop 1187 1188 // Now look through all the server control blocks 1189 for (size_t ii = 0; ii < sMax; ii++) 1190 { 1191 if (mServers[ii] != NULL) 1192 { 1193 mServers[ii]->unblockAll(); 1194 } 1195 } //loop 1196 1197 } 1198 ALOGD ("%s: exit", fn); 1199 } 1200 1201 1202 /******************************************************************************* 1203 ** 1204 ** Function: nfaServerCallback 1205 ** 1206 ** Description: Receive LLCP-related events from the stack. 1207 ** p2pEvent: Event code. 1208 ** eventData: Event data. 1209 ** 1210 ** Returns: None 1211 ** 1212 *******************************************************************************/ 1213 void PeerToPeer::nfaServerCallback (tNFA_P2P_EVT p2pEvent, tNFA_P2P_EVT_DATA* eventData) 1214 { 1215 static const char fn [] = "PeerToPeer::nfaServerCallback"; 1216 sp<P2pServer> pSrv = NULL; 1217 sp<NfaConn> pConn = NULL; 1218 1219 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: enter; event=0x%X", fn, p2pEvent); 1220 1221 switch (p2pEvent) 1222 { 1223 case NFA_P2P_REG_SERVER_EVT: // NFA_P2pRegisterServer() has started to listen 1224 ALOGD ("%s: NFA_P2P_REG_SERVER_EVT; handle: 0x%04x; service sap=0x%02x name: %s", fn, 1225 eventData->reg_server.server_handle, eventData->reg_server.server_sap, eventData->reg_server.service_name); 1226 1227 sP2p.mMutex.lock(); 1228 pSrv = sP2p.findServerLocked(eventData->reg_server.service_name); 1229 sP2p.mMutex.unlock(); 1230 if (pSrv == NULL) 1231 { 1232 ALOGE ("%s: NFA_P2P_REG_SERVER_EVT for unknown service: %s", fn, eventData->reg_server.service_name); 1233 } 1234 else 1235 { 1236 SyncEventGuard guard (pSrv->mRegServerEvent); 1237 pSrv->mNfaP2pServerHandle = eventData->reg_server.server_handle; 1238 pSrv->mRegServerEvent.notifyOne(); //unblock registerServer() 1239 } 1240 break; 1241 1242 case NFA_P2P_ACTIVATED_EVT: //remote device has activated 1243 ALOGD ("%s: NFA_P2P_ACTIVATED_EVT; handle: 0x%04x", fn, eventData->activated.handle); 1244 break; 1245 1246 case NFA_P2P_DEACTIVATED_EVT: 1247 ALOGD ("%s: NFA_P2P_DEACTIVATED_EVT; handle: 0x%04x", fn, eventData->activated.handle); 1248 break; 1249 1250 case NFA_P2P_CONN_REQ_EVT: 1251 ALOGD ("%s: NFA_P2P_CONN_REQ_EVT; nfa server h=0x%04x; nfa conn h=0x%04x; remote sap=0x%02x", fn, 1252 eventData->conn_req.server_handle, eventData->conn_req.conn_handle, eventData->conn_req.remote_sap); 1253 1254 sP2p.mMutex.lock(); 1255 pSrv = sP2p.findServerLocked(eventData->conn_req.server_handle); 1256 sP2p.mMutex.unlock(); 1257 if (pSrv == NULL) 1258 { 1259 ALOGE ("%s: NFA_P2P_CONN_REQ_EVT; unknown server h", fn); 1260 return; 1261 } 1262 ALOGD ("%s: NFA_P2P_CONN_REQ_EVT; server jni h=%u", fn, pSrv->mJniHandle); 1263 1264 // Look for a connection block that is waiting (handle invalid) 1265 if ((pConn = pSrv->findServerConnection((tNFA_HANDLE) NFA_HANDLE_INVALID)) == NULL) 1266 { 1267 ALOGE ("%s: NFA_P2P_CONN_REQ_EVT; server not listening", fn); 1268 } 1269 else 1270 { 1271 SyncEventGuard guard (pSrv->mConnRequestEvent); 1272 pConn->mNfaConnHandle = eventData->conn_req.conn_handle; 1273 pConn->mRemoteMaxInfoUnit = eventData->conn_req.remote_miu; 1274 pConn->mRemoteRecvWindow = eventData->conn_req.remote_rw; 1275 ALOGD ("%s: NFA_P2P_CONN_REQ_EVT; server jni h=%u; conn jni h=%u; notify conn req", fn, pSrv->mJniHandle, pConn->mJniHandle); 1276 pSrv->mConnRequestEvent.notifyOne(); //unblock accept() 1277 } 1278 break; 1279 1280 case NFA_P2P_CONNECTED_EVT: 1281 ALOGD ("%s: NFA_P2P_CONNECTED_EVT; h=0x%x remote sap=0x%X", fn, 1282 eventData->connected.client_handle, eventData->connected.remote_sap); 1283 break; 1284 1285 case NFA_P2P_DISC_EVT: 1286 ALOGD ("%s: NFA_P2P_DISC_EVT; h=0x%04x; reason=0x%X", fn, eventData->disc.handle, eventData->disc.reason); 1287 // Look for the connection block 1288 if ((pConn = sP2p.findConnection(eventData->disc.handle)) == NULL) 1289 { 1290 ALOGE ("%s: NFA_P2P_DISC_EVT: can't find conn for NFA handle: 0x%04x", fn, eventData->disc.handle); 1291 } 1292 else 1293 { 1294 sP2p.mDisconnectMutex.lock (); 1295 pConn->mNfaConnHandle = NFA_HANDLE_INVALID; 1296 { 1297 ALOGD ("%s: NFA_P2P_DISC_EVT; try guard disconn event", fn); 1298 SyncEventGuard guard3 (pConn->mDisconnectingEvent); 1299 pConn->mDisconnectingEvent.notifyOne (); 1300 ALOGD ("%s: NFA_P2P_DISC_EVT; notified disconn event", fn); 1301 } 1302 { 1303 ALOGD ("%s: NFA_P2P_DISC_EVT; try guard congest event", fn); 1304 SyncEventGuard guard1 (pConn->mCongEvent); 1305 pConn->mCongEvent.notifyOne (); //unblock write (if congested) 1306 ALOGD ("%s: NFA_P2P_DISC_EVT; notified congest event", fn); 1307 } 1308 { 1309 ALOGD ("%s: NFA_P2P_DISC_EVT; try guard read event", fn); 1310 SyncEventGuard guard2 (pConn->mReadEvent); 1311 pConn->mReadEvent.notifyOne (); //unblock receive() 1312 ALOGD ("%s: NFA_P2P_DISC_EVT; notified read event", fn); 1313 } 1314 sP2p.mDisconnectMutex.unlock (); 1315 } 1316 break; 1317 1318 case NFA_P2P_DATA_EVT: 1319 // Look for the connection block 1320 if ((pConn = sP2p.findConnection(eventData->data.handle)) == NULL) 1321 { 1322 ALOGE ("%s: NFA_P2P_DATA_EVT: can't find conn for NFA handle: 0x%04x", fn, eventData->data.handle); 1323 } 1324 else 1325 { 1326 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: NFA_P2P_DATA_EVT; h=0x%X; remote sap=0x%X", fn, 1327 eventData->data.handle, eventData->data.remote_sap); 1328 SyncEventGuard guard (pConn->mReadEvent); 1329 pConn->mReadEvent.notifyOne(); 1330 } 1331 break; 1332 1333 case NFA_P2P_CONGEST_EVT: 1334 // Look for the connection block 1335 if ((pConn = sP2p.findConnection(eventData->congest.handle)) == NULL) 1336 { 1337 ALOGE ("%s: NFA_P2P_CONGEST_EVT: can't find conn for NFA handle: 0x%04x", fn, eventData->congest.handle); 1338 } 1339 else 1340 { 1341 ALOGD ("%s: NFA_P2P_CONGEST_EVT; nfa handle: 0x%04x congested: %u", fn, 1342 eventData->congest.handle, eventData->congest.is_congested); 1343 if (eventData->congest.is_congested == FALSE) 1344 { 1345 SyncEventGuard guard (pConn->mCongEvent); 1346 pConn->mCongEvent.notifyOne(); 1347 } 1348 } 1349 break; 1350 1351 default: 1352 ALOGE ("%s: unknown event 0x%X ????", fn, p2pEvent); 1353 break; 1354 } 1355 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: exit", fn); 1356 } 1357 1358 1359 /******************************************************************************* 1360 ** 1361 ** Function: nfaClientCallback 1362 ** 1363 ** Description: Receive LLCP-related events from the stack. 1364 ** p2pEvent: Event code. 1365 ** eventData: Event data. 1366 ** 1367 ** Returns: None 1368 ** 1369 *******************************************************************************/ 1370 void PeerToPeer::nfaClientCallback (tNFA_P2P_EVT p2pEvent, tNFA_P2P_EVT_DATA* eventData) 1371 { 1372 static const char fn [] = "PeerToPeer::nfaClientCallback"; 1373 sp<NfaConn> pConn = NULL; 1374 sp<P2pClient> pClient = NULL; 1375 1376 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: enter; event=%u", fn, p2pEvent); 1377 1378 switch (p2pEvent) 1379 { 1380 case NFA_P2P_REG_CLIENT_EVT: 1381 // Look for a client that is trying to register 1382 if ((pClient = sP2p.findClient ((tNFA_HANDLE)NFA_HANDLE_INVALID)) == NULL) 1383 { 1384 ALOGE ("%s: NFA_P2P_REG_CLIENT_EVT: can't find waiting client", fn); 1385 } 1386 else 1387 { 1388 ALOGD ("%s: NFA_P2P_REG_CLIENT_EVT; Conn Handle: 0x%04x, pClient: 0x%p", fn, eventData->reg_client.client_handle, pClient.get()); 1389 1390 SyncEventGuard guard (pClient->mRegisteringEvent); 1391 pClient->mNfaP2pClientHandle = eventData->reg_client.client_handle; 1392 pClient->mRegisteringEvent.notifyOne(); 1393 } 1394 break; 1395 1396 case NFA_P2P_ACTIVATED_EVT: 1397 // Look for a client that is trying to register 1398 if ((pClient = sP2p.findClient (eventData->activated.handle)) == NULL) 1399 { 1400 ALOGE ("%s: NFA_P2P_ACTIVATED_EVT: can't find client", fn); 1401 } 1402 else 1403 { 1404 ALOGD ("%s: NFA_P2P_ACTIVATED_EVT; Conn Handle: 0x%04x, pClient: 0x%p", fn, eventData->activated.handle, pClient.get()); 1405 } 1406 break; 1407 1408 case NFA_P2P_DEACTIVATED_EVT: 1409 ALOGD ("%s: NFA_P2P_DEACTIVATED_EVT: conn handle: 0x%X", fn, eventData->deactivated.handle); 1410 break; 1411 1412 case NFA_P2P_CONNECTED_EVT: 1413 // Look for the client that is trying to connect 1414 if ((pClient = sP2p.findClient (eventData->connected.client_handle)) == NULL) 1415 { 1416 ALOGE ("%s: NFA_P2P_CONNECTED_EVT: can't find client: 0x%04x", fn, eventData->connected.client_handle); 1417 } 1418 else 1419 { 1420 ALOGD ("%s: NFA_P2P_CONNECTED_EVT; client_handle=0x%04x conn_handle: 0x%04x remote sap=0x%X pClient: 0x%p", fn, 1421 eventData->connected.client_handle, eventData->connected.conn_handle, eventData->connected.remote_sap, pClient.get()); 1422 1423 SyncEventGuard guard (pClient->mConnectingEvent); 1424 pClient->mClientConn->mNfaConnHandle = eventData->connected.conn_handle; 1425 pClient->mClientConn->mRemoteMaxInfoUnit = eventData->connected.remote_miu; 1426 pClient->mClientConn->mRemoteRecvWindow = eventData->connected.remote_rw; 1427 pClient->mConnectingEvent.notifyOne(); //unblock createDataLinkConn() 1428 } 1429 break; 1430 1431 case NFA_P2P_DISC_EVT: 1432 ALOGD ("%s: NFA_P2P_DISC_EVT; h=0x%04x; reason=0x%X", fn, eventData->disc.handle, eventData->disc.reason); 1433 // Look for the connection block 1434 if ((pConn = sP2p.findConnection(eventData->disc.handle)) == NULL) 1435 { 1436 // If no connection, may be a client that is trying to connect 1437 if ((pClient = sP2p.findClient (eventData->disc.handle)) == NULL) 1438 { 1439 ALOGE ("%s: NFA_P2P_DISC_EVT: can't find client for NFA handle: 0x%04x", fn, eventData->disc.handle); 1440 return; 1441 } 1442 // Unblock createDataLinkConn() 1443 SyncEventGuard guard (pClient->mConnectingEvent); 1444 pClient->mConnectingEvent.notifyOne(); 1445 } 1446 else 1447 { 1448 sP2p.mDisconnectMutex.lock (); 1449 pConn->mNfaConnHandle = NFA_HANDLE_INVALID; 1450 { 1451 ALOGD ("%s: NFA_P2P_DISC_EVT; try guard disconn event", fn); 1452 SyncEventGuard guard3 (pConn->mDisconnectingEvent); 1453 pConn->mDisconnectingEvent.notifyOne (); 1454 ALOGD ("%s: NFA_P2P_DISC_EVT; notified disconn event", fn); 1455 } 1456 { 1457 ALOGD ("%s: NFA_P2P_DISC_EVT; try guard congest event", fn); 1458 SyncEventGuard guard1 (pConn->mCongEvent); 1459 pConn->mCongEvent.notifyOne(); //unblock write (if congested) 1460 ALOGD ("%s: NFA_P2P_DISC_EVT; notified congest event", fn); 1461 } 1462 { 1463 ALOGD ("%s: NFA_P2P_DISC_EVT; try guard read event", fn); 1464 SyncEventGuard guard2 (pConn->mReadEvent); 1465 pConn->mReadEvent.notifyOne(); //unblock receive() 1466 ALOGD ("%s: NFA_P2P_DISC_EVT; notified read event", fn); 1467 } 1468 sP2p.mDisconnectMutex.unlock (); 1469 } 1470 break; 1471 1472 case NFA_P2P_DATA_EVT: 1473 // Look for the connection block 1474 if ((pConn = sP2p.findConnection(eventData->data.handle)) == NULL) 1475 { 1476 ALOGE ("%s: NFA_P2P_DATA_EVT: can't find conn for NFA handle: 0x%04x", fn, eventData->data.handle); 1477 } 1478 else 1479 { 1480 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: NFA_P2P_DATA_EVT; h=0x%X; remote sap=0x%X", fn, 1481 eventData->data.handle, eventData->data.remote_sap); 1482 SyncEventGuard guard (pConn->mReadEvent); 1483 pConn->mReadEvent.notifyOne(); 1484 } 1485 break; 1486 1487 case NFA_P2P_CONGEST_EVT: 1488 // Look for the connection block 1489 if ((pConn = sP2p.findConnection(eventData->congest.handle)) == NULL) 1490 { 1491 ALOGE ("%s: NFA_P2P_CONGEST_EVT: can't find conn for NFA handle: 0x%04x", fn, eventData->congest.handle); 1492 } 1493 else 1494 { 1495 ALOGD_IF ((appl_trace_level>=BT_TRACE_LEVEL_DEBUG), "%s: NFA_P2P_CONGEST_EVT; nfa handle: 0x%04x congested: %u", fn, 1496 eventData->congest.handle, eventData->congest.is_congested); 1497 1498 SyncEventGuard guard (pConn->mCongEvent); 1499 pConn->mCongEvent.notifyOne(); 1500 } 1501 break; 1502 1503 default: 1504 ALOGE ("%s: unknown event 0x%X ????", fn, p2pEvent); 1505 break; 1506 } 1507 } 1508 1509 1510 /******************************************************************************* 1511 ** 1512 ** Function: connectionEventHandler 1513 ** 1514 ** Description: Receive events from the stack. 1515 ** event: Event code. 1516 ** eventData: Event data. 1517 ** 1518 ** Returns: None 1519 ** 1520 *******************************************************************************/ 1521 void PeerToPeer::connectionEventHandler (UINT8 event, tNFA_CONN_EVT_DATA* /*eventData*/) 1522 { 1523 switch (event) 1524 { 1525 case NFA_SET_P2P_LISTEN_TECH_EVT: 1526 { 1527 SyncEventGuard guard (mSetTechEvent); 1528 mSetTechEvent.notifyOne(); //unblock NFA_SetP2pListenTech() 1529 break; 1530 } 1531 } 1532 } 1533 1534 1535 /******************************************************************************* 1536 ** 1537 ** Function: getNextJniHandle 1538 ** 1539 ** Description: Get a new JNI handle. 1540 ** 1541 ** Returns: A new JNI handle. 1542 ** 1543 *******************************************************************************/ 1544 PeerToPeer::tJNI_HANDLE PeerToPeer::getNewJniHandle () 1545 { 1546 tJNI_HANDLE newHandle = 0; 1547 1548 mNewJniHandleMutex.lock (); 1549 newHandle = mNextJniHandle++; 1550 mNewJniHandleMutex.unlock (); 1551 return newHandle; 1552 } 1553 1554 1555 ///////////////////////////////////////////////////////////////////////// 1556 ///////////////////////////////////////////////////////////////////////// 1557 1558 1559 /******************************************************************************* 1560 ** 1561 ** Function: P2pServer 1562 ** 1563 ** Description: Initialize member variables. 1564 ** 1565 ** Returns: None 1566 ** 1567 *******************************************************************************/ 1568 P2pServer::P2pServer(PeerToPeer::tJNI_HANDLE jniHandle, const char* serviceName) 1569 : mNfaP2pServerHandle (NFA_HANDLE_INVALID), 1570 mJniHandle (jniHandle) 1571 { 1572 mServiceName.assign (serviceName); 1573 1574 memset (mServerConn, 0, sizeof(mServerConn)); 1575 } 1576 1577 bool P2pServer::registerWithStack() 1578 { 1579 static const char fn [] = "P2pServer::registerWithStack"; 1580 ALOGD ("%s: enter; service name: %s JNI handle: %u", fn, mServiceName.c_str(), mJniHandle); 1581 tNFA_STATUS stat = NFA_STATUS_OK; 1582 UINT8 serverSap = NFA_P2P_ANY_SAP; 1583 1584 /********************** 1585 default values for all LLCP parameters: 1586 - Local Link MIU (LLCP_MIU) 1587 - Option parameter (LLCP_OPT_VALUE) 1588 - Response Waiting Time Index (LLCP_WAITING_TIME) 1589 - Local Link Timeout (LLCP_LTO_VALUE) 1590 - Inactivity Timeout as initiator role (LLCP_INIT_INACTIVITY_TIMEOUT) 1591 - Inactivity Timeout as target role (LLCP_TARGET_INACTIVITY_TIMEOUT) 1592 - Delay SYMM response (LLCP_DELAY_RESP_TIME) 1593 - Data link connection timeout (LLCP_DATA_LINK_CONNECTION_TOUT) 1594 - Delay timeout to send first PDU as initiator (LLCP_DELAY_TIME_TO_SEND_FIRST_PDU) 1595 ************************/ 1596 stat = NFA_P2pSetLLCPConfig (LLCP_MAX_MIU, 1597 LLCP_OPT_VALUE, 1598 LLCP_WAITING_TIME, 1599 LLCP_LTO_VALUE, 1600 0, //use 0 for infinite timeout for symmetry procedure when acting as initiator 1601 0, //use 0 for infinite timeout for symmetry procedure when acting as target 1602 LLCP_DELAY_RESP_TIME, 1603 LLCP_DATA_LINK_TIMEOUT, 1604 LLCP_DELAY_TIME_TO_SEND_FIRST_PDU); 1605 if (stat != NFA_STATUS_OK) 1606 ALOGE ("%s: fail set LLCP config; error=0x%X", fn, stat); 1607 1608 if (sSnepServiceName.compare(mServiceName) == 0) 1609 serverSap = LLCP_SAP_SNEP; //LLCP_SAP_SNEP == 4 1610 1611 { 1612 SyncEventGuard guard (mRegServerEvent); 1613 stat = NFA_P2pRegisterServer (serverSap, NFA_P2P_DLINK_TYPE, const_cast<char*>(mServiceName.c_str()), 1614 PeerToPeer::nfaServerCallback); 1615 if (stat != NFA_STATUS_OK) 1616 { 1617 ALOGE ("%s: fail register p2p server; error=0x%X", fn, stat); 1618 return (false); 1619 } 1620 ALOGD ("%s: wait for listen-completion event", fn); 1621 // Wait for NFA_P2P_REG_SERVER_EVT 1622 mRegServerEvent.wait (); 1623 } 1624 1625 return (mNfaP2pServerHandle != NFA_HANDLE_INVALID); 1626 } 1627 1628 bool P2pServer::accept(PeerToPeer::tJNI_HANDLE serverJniHandle, PeerToPeer::tJNI_HANDLE connJniHandle, 1629 int maxInfoUnit, int recvWindow) 1630 { 1631 static const char fn [] = "P2pServer::accept"; 1632 tNFA_STATUS nfaStat = NFA_STATUS_OK; 1633 1634 sp<NfaConn> connection = allocateConnection(connJniHandle); 1635 if (connection == NULL) { 1636 ALOGE ("%s: failed to allocate new server connection", fn); 1637 return false; 1638 } 1639 1640 { 1641 // Wait for NFA_P2P_CONN_REQ_EVT or NFA_NDEF_DATA_EVT when remote device requests connection 1642 SyncEventGuard guard (mConnRequestEvent); 1643 ALOGD ("%s: serverJniHandle: %u; connJniHandle: %u; wait for incoming connection", fn, 1644 serverJniHandle, connJniHandle); 1645 mConnRequestEvent.wait(); 1646 ALOGD ("%s: serverJniHandle: %u; connJniHandle: %u; nfa conn h: 0x%X; got incoming connection", fn, 1647 serverJniHandle, connJniHandle, connection->mNfaConnHandle); 1648 } 1649 1650 if (connection->mNfaConnHandle == NFA_HANDLE_INVALID) 1651 { 1652 removeServerConnection(connJniHandle); 1653 ALOGD ("%s: no handle assigned", fn); 1654 return (false); 1655 } 1656 1657 ALOGD ("%s: serverJniHandle: %u; connJniHandle: %u; nfa conn h: 0x%X; try accept", fn, 1658 serverJniHandle, connJniHandle, connection->mNfaConnHandle); 1659 nfaStat = NFA_P2pAcceptConn (connection->mNfaConnHandle, maxInfoUnit, recvWindow); 1660 1661 if (nfaStat != NFA_STATUS_OK) 1662 { 1663 ALOGE ("%s: fail to accept remote; error=0x%X", fn, nfaStat); 1664 return (false); 1665 } 1666 1667 ALOGD ("%s: exit; serverJniHandle: %u; connJniHandle: %u; nfa conn h: 0x%X", fn, 1668 serverJniHandle, connJniHandle, connection->mNfaConnHandle); 1669 return (true); 1670 } 1671 1672 void P2pServer::unblockAll() 1673 { 1674 AutoMutex mutex(mMutex); 1675 for (int jj = 0; jj < MAX_NFA_CONNS_PER_SERVER; jj++) 1676 { 1677 if (mServerConn[jj] != NULL) 1678 { 1679 mServerConn[jj]->mNfaConnHandle = NFA_HANDLE_INVALID; 1680 { 1681 SyncEventGuard guard1 (mServerConn[jj]->mCongEvent); 1682 mServerConn[jj]->mCongEvent.notifyOne (); //unblock write (if congested) 1683 } 1684 { 1685 SyncEventGuard guard2 (mServerConn[jj]->mReadEvent); 1686 mServerConn[jj]->mReadEvent.notifyOne (); //unblock receive() 1687 } 1688 } 1689 } 1690 } 1691 1692 sp<NfaConn> P2pServer::allocateConnection (PeerToPeer::tJNI_HANDLE jniHandle) 1693 { 1694 AutoMutex mutex(mMutex); 1695 // First, find a free connection block to handle the connection 1696 for (int ii = 0; ii < MAX_NFA_CONNS_PER_SERVER; ii++) 1697 { 1698 if (mServerConn[ii] == NULL) 1699 { 1700 mServerConn[ii] = new NfaConn; 1701 mServerConn[ii]->mJniHandle = jniHandle; 1702 return mServerConn[ii]; 1703 } 1704 } 1705 1706 return NULL; 1707 } 1708 1709 1710 /******************************************************************************* 1711 ** 1712 ** Function: findServerConnection 1713 ** 1714 ** Description: Find a P2pServer that has the handle. 1715 ** nfaConnHandle: NFA connection handle. 1716 ** 1717 ** Returns: P2pServer object. 1718 ** 1719 *******************************************************************************/ 1720 sp<NfaConn> P2pServer::findServerConnection (tNFA_HANDLE nfaConnHandle) 1721 { 1722 int jj = 0; 1723 1724 AutoMutex mutex(mMutex); 1725 for (jj = 0; jj < MAX_NFA_CONNS_PER_SERVER; jj++) 1726 { 1727 if ( (mServerConn[jj] != NULL) && (mServerConn[jj]->mNfaConnHandle == nfaConnHandle) ) 1728 return (mServerConn[jj]); 1729 } 1730 1731 // If here, not found 1732 return (NULL); 1733 } 1734 1735 /******************************************************************************* 1736 ** 1737 ** Function: findServerConnection 1738 ** 1739 ** Description: Find a P2pServer that has the handle. 1740 ** nfaConnHandle: NFA connection handle. 1741 ** 1742 ** Returns: P2pServer object. 1743 ** 1744 *******************************************************************************/ 1745 sp<NfaConn> P2pServer::findServerConnection (PeerToPeer::tJNI_HANDLE jniHandle) 1746 { 1747 int jj = 0; 1748 1749 AutoMutex mutex(mMutex); 1750 for (jj = 0; jj < MAX_NFA_CONNS_PER_SERVER; jj++) 1751 { 1752 if ( (mServerConn[jj] != NULL) && (mServerConn[jj]->mJniHandle == jniHandle) ) 1753 return (mServerConn[jj]); 1754 } 1755 1756 // If here, not found 1757 return (NULL); 1758 } 1759 1760 /******************************************************************************* 1761 ** 1762 ** Function: removeServerConnection 1763 ** 1764 ** Description: Find a P2pServer that has the handle. 1765 ** nfaConnHandle: NFA connection handle. 1766 ** 1767 ** Returns: P2pServer object. 1768 ** 1769 *******************************************************************************/ 1770 bool P2pServer::removeServerConnection (PeerToPeer::tJNI_HANDLE jniHandle) 1771 { 1772 int jj = 0; 1773 1774 AutoMutex mutex(mMutex); 1775 for (jj = 0; jj < MAX_NFA_CONNS_PER_SERVER; jj++) 1776 { 1777 if ( (mServerConn[jj] != NULL) && (mServerConn[jj]->mJniHandle == jniHandle) ) { 1778 mServerConn[jj] = NULL; 1779 return true; 1780 } 1781 } 1782 1783 // If here, not found 1784 return false; 1785 } 1786 ///////////////////////////////////////////////////////////////////////// 1787 ///////////////////////////////////////////////////////////////////////// 1788 1789 1790 /******************************************************************************* 1791 ** 1792 ** Function: P2pClient 1793 ** 1794 ** Description: Initialize member variables. 1795 ** 1796 ** Returns: None 1797 ** 1798 *******************************************************************************/ 1799 P2pClient::P2pClient () 1800 : mNfaP2pClientHandle (NFA_HANDLE_INVALID), 1801 mIsConnecting (false) 1802 { 1803 mClientConn = new NfaConn(); 1804 } 1805 1806 1807 /******************************************************************************* 1808 ** 1809 ** Function: ~P2pClient 1810 ** 1811 ** Description: Free all resources. 1812 ** 1813 ** Returns: None 1814 ** 1815 *******************************************************************************/ 1816 P2pClient::~P2pClient () 1817 { 1818 } 1819 1820 1821 ///////////////////////////////////////////////////////////////////////// 1822 ///////////////////////////////////////////////////////////////////////// 1823 1824 1825 /******************************************************************************* 1826 ** 1827 ** Function: NfaConn 1828 ** 1829 ** Description: Initialize member variables. 1830 ** 1831 ** Returns: None 1832 ** 1833 *******************************************************************************/ 1834 NfaConn::NfaConn() 1835 : mNfaConnHandle (NFA_HANDLE_INVALID), 1836 mJniHandle (0), 1837 mMaxInfoUnit (0), 1838 mRecvWindow (0), 1839 mRemoteMaxInfoUnit (0), 1840 mRemoteRecvWindow (0) 1841 { 1842 } 1843
