1 /* 2 * Copyright (c) 2008-2009, Motorola, Inc. 3 * 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * - Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * - Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * - Neither the name of the Motorola, Inc. nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 package com.android.bluetooth.opp; 34 35 import java.io.BufferedOutputStream; 36 import java.io.File; 37 import java.io.IOException; 38 import java.io.InputStream; 39 import java.util.Arrays; 40 41 import android.content.ContentValues; 42 import android.content.Context; 43 import android.content.Intent; 44 import android.net.Uri; 45 import android.os.Handler; 46 import android.os.Message; 47 import android.os.PowerManager; 48 import android.os.PowerManager.WakeLock; 49 import android.util.Log; 50 import android.webkit.MimeTypeMap; 51 52 import javax.obex.HeaderSet; 53 import javax.obex.ObexTransport; 54 import javax.obex.Operation; 55 import javax.obex.ResponseCodes; 56 import javax.obex.ServerRequestHandler; 57 import javax.obex.ServerSession; 58 59 /** 60 * This class runs as an OBEX server 61 */ 62 public class BluetoothOppObexServerSession extends ServerRequestHandler implements 63 BluetoothOppObexSession { 64 65 private static final String TAG = "BtOppObexServer"; 66 private static final boolean D = Constants.DEBUG; 67 private static final boolean V = Constants.VERBOSE; 68 69 private ObexTransport mTransport; 70 71 private Context mContext; 72 73 private Handler mCallback = null; 74 75 /* status when server is blocking for user/auto confirmation */ 76 private boolean mServerBlocking = true; 77 78 /* the current transfer info */ 79 private BluetoothOppShareInfo mInfo; 80 81 /* info id when we insert the record */ 82 private int mLocalShareInfoId; 83 84 private int mAccepted = BluetoothShare.USER_CONFIRMATION_PENDING; 85 86 private boolean mInterrupted = false; 87 88 private ServerSession mSession; 89 90 private long mTimestamp; 91 92 private BluetoothOppReceiveFileInfo mFileInfo; 93 94 private WakeLock mWakeLock; 95 96 private WakeLock mPartialWakeLock; 97 98 boolean mTimeoutMsgSent = false; 99 100 public BluetoothOppObexServerSession(Context context, ObexTransport transport) { 101 mContext = context; 102 mTransport = transport; 103 PowerManager pm = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 104 mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP 105 | PowerManager.ON_AFTER_RELEASE, TAG); 106 mPartialWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 107 } 108 109 public void unblock() { 110 mServerBlocking = false; 111 } 112 113 /** 114 * Called when connection is accepted from remote, to retrieve the first 115 * Header then wait for user confirmation 116 */ 117 public void preStart() { 118 if (D) Log.d(TAG, "acquire full WakeLock"); 119 mWakeLock.acquire(); 120 try { 121 if (D) Log.d(TAG, "Create ServerSession with transport " + mTransport.toString()); 122 mSession = new ServerSession(mTransport, this, null); 123 } catch (IOException e) { 124 Log.e(TAG, "Create server session error" + e); 125 } 126 } 127 128 /** 129 * Called from BluetoothOppTransfer to start the "Transfer" 130 */ 131 public void start(Handler handler, int numShares) { 132 if (D) Log.d(TAG, "Start!"); 133 mCallback = handler; 134 135 } 136 137 /** 138 * Called from BluetoothOppTransfer to cancel the "Transfer" Otherwise, 139 * server should end by itself. 140 */ 141 public void stop() { 142 /* 143 * TODO now we implement in a tough way, just close the socket. 144 * maybe need nice way 145 */ 146 if (D) Log.d(TAG, "Stop!"); 147 mInterrupted = true; 148 if (mSession != null) { 149 try { 150 mSession.close(); 151 mTransport.close(); 152 } catch (IOException e) { 153 Log.e(TAG, "close mTransport error" + e); 154 } 155 } 156 mCallback = null; 157 mSession = null; 158 } 159 160 public void addShare(BluetoothOppShareInfo info) { 161 if (D) Log.d(TAG, "addShare for id " + info.mId); 162 mInfo = info; 163 mFileInfo = processShareInfo(); 164 } 165 166 @Override 167 public int onPut(Operation op) { 168 if (D) Log.d(TAG, "onPut " + op.toString()); 169 HeaderSet request; 170 String name, mimeType; 171 Long length; 172 173 int obexResponse = ResponseCodes.OBEX_HTTP_OK; 174 175 /** 176 * For multiple objects, reject further objects after user deny the 177 * first one 178 */ 179 if (mAccepted == BluetoothShare.USER_CONFIRMATION_DENIED) { 180 return ResponseCodes.OBEX_HTTP_FORBIDDEN; 181 } 182 183 String destination; 184 if (mTransport instanceof BluetoothOppRfcommTransport) { 185 destination = ((BluetoothOppRfcommTransport)mTransport).getRemoteAddress(); 186 } else { 187 destination = "FF:FF:FF:00:00:00"; 188 } 189 boolean isWhitelisted = BluetoothOppManager.getInstance(mContext). 190 isWhitelisted(destination); 191 192 try { 193 boolean pre_reject = false; 194 195 request = op.getReceivedHeader(); 196 if (V) Constants.logHeader(request); 197 name = (String)request.getHeader(HeaderSet.NAME); 198 length = (Long)request.getHeader(HeaderSet.LENGTH); 199 mimeType = (String)request.getHeader(HeaderSet.TYPE); 200 201 if (length == 0) { 202 if (D) Log.w(TAG, "length is 0, reject the transfer"); 203 pre_reject = true; 204 obexResponse = ResponseCodes.OBEX_HTTP_LENGTH_REQUIRED; 205 } 206 207 if (name == null || name.equals("")) { 208 if (D) Log.w(TAG, "name is null or empty, reject the transfer"); 209 pre_reject = true; 210 obexResponse = ResponseCodes.OBEX_HTTP_BAD_REQUEST; 211 } 212 213 if (!pre_reject) { 214 /* first we look for Mimetype in Android map */ 215 String extension, type; 216 int dotIndex = name.lastIndexOf("."); 217 if (dotIndex < 0 && mimeType == null) { 218 if (D) Log.w(TAG, "There is no file extension or mime type," + 219 "reject the transfer"); 220 pre_reject = true; 221 obexResponse = ResponseCodes.OBEX_HTTP_BAD_REQUEST; 222 } else { 223 extension = name.substring(dotIndex + 1).toLowerCase(); 224 MimeTypeMap map = MimeTypeMap.getSingleton(); 225 type = map.getMimeTypeFromExtension(extension); 226 if (V) Log.v(TAG, "Mimetype guessed from extension " + extension + " is " + type); 227 if (type != null) { 228 mimeType = type; 229 230 } else { 231 if (mimeType == null) { 232 if (D) Log.w(TAG, "Can't get mimetype, reject the transfer"); 233 pre_reject = true; 234 obexResponse = ResponseCodes.OBEX_HTTP_UNSUPPORTED_TYPE; 235 } 236 } 237 if (mimeType != null) { 238 mimeType = mimeType.toLowerCase(); 239 } 240 } 241 } 242 243 // Reject policy: anything outside the "white list" plus unspecified 244 // MIME Types. Also reject everything in the "black list". 245 if (!pre_reject 246 && (mimeType == null 247 || (!isWhitelisted && !Constants.mimeTypeMatches(mimeType, 248 Constants.ACCEPTABLE_SHARE_INBOUND_TYPES)) 249 || Constants.mimeTypeMatches(mimeType, 250 Constants.UNACCEPTABLE_SHARE_INBOUND_TYPES))) { 251 if (D) Log.w(TAG, "mimeType is null or in unacceptable list, reject the transfer"); 252 pre_reject = true; 253 obexResponse = ResponseCodes.OBEX_HTTP_UNSUPPORTED_TYPE; 254 } 255 256 if (pre_reject && obexResponse != ResponseCodes.OBEX_HTTP_OK) { 257 // some bad implemented client won't send disconnect 258 return obexResponse; 259 } 260 261 } catch (IOException e) { 262 Log.e(TAG, "get getReceivedHeaders error " + e); 263 return ResponseCodes.OBEX_HTTP_BAD_REQUEST; 264 } 265 266 ContentValues values = new ContentValues(); 267 268 values.put(BluetoothShare.FILENAME_HINT, name); 269 values.put(BluetoothShare.TOTAL_BYTES, length.intValue()); 270 values.put(BluetoothShare.MIMETYPE, mimeType); 271 272 values.put(BluetoothShare.DESTINATION, destination); 273 274 values.put(BluetoothShare.DIRECTION, BluetoothShare.DIRECTION_INBOUND); 275 values.put(BluetoothShare.TIMESTAMP, mTimestamp); 276 277 boolean needConfirm = true; 278 /** It's not first put if !serverBlocking, so we auto accept it */ 279 if (!mServerBlocking) { 280 values.put(BluetoothShare.USER_CONFIRMATION, 281 BluetoothShare.USER_CONFIRMATION_AUTO_CONFIRMED); 282 needConfirm = false; 283 } 284 285 if (isWhitelisted) { 286 values.put(BluetoothShare.USER_CONFIRMATION, 287 BluetoothShare.USER_CONFIRMATION_HANDOVER_CONFIRMED); 288 needConfirm = false; 289 290 } 291 292 Uri contentUri = mContext.getContentResolver().insert(BluetoothShare.CONTENT_URI, values); 293 mLocalShareInfoId = Integer.parseInt(contentUri.getPathSegments().get(1)); 294 295 if (needConfirm) { 296 Intent in = new Intent(BluetoothShare.INCOMING_FILE_CONFIRMATION_REQUEST_ACTION); 297 in.setClassName(Constants.THIS_PACKAGE_NAME, BluetoothOppReceiver.class.getName()); 298 mContext.sendBroadcast(in); 299 } 300 301 if (V) Log.v(TAG, "insert contentUri: " + contentUri); 302 if (V) Log.v(TAG, "mLocalShareInfoId = " + mLocalShareInfoId); 303 304 if (V) Log.v(TAG, "acquire partial WakeLock"); 305 306 307 synchronized (this) { 308 if (mWakeLock.isHeld()) { 309 mPartialWakeLock.acquire(); 310 mWakeLock.release(); 311 } 312 mServerBlocking = true; 313 try { 314 315 while (mServerBlocking) { 316 wait(1000); 317 if (mCallback != null && !mTimeoutMsgSent) { 318 mCallback.sendMessageDelayed(mCallback 319 .obtainMessage(BluetoothOppObexSession.MSG_CONNECT_TIMEOUT), 320 BluetoothOppObexSession.SESSION_TIMEOUT); 321 mTimeoutMsgSent = true; 322 if (V) Log.v(TAG, "MSG_CONNECT_TIMEOUT sent"); 323 } 324 } 325 } catch (InterruptedException e) { 326 if (V) Log.v(TAG, "Interrupted in onPut blocking"); 327 } 328 } 329 if (D) Log.d(TAG, "Server unblocked "); 330 synchronized (this) { 331 if (mCallback != null && mTimeoutMsgSent) { 332 mCallback.removeMessages(BluetoothOppObexSession.MSG_CONNECT_TIMEOUT); 333 } 334 } 335 336 /* we should have mInfo now */ 337 338 /* 339 * TODO check if this mInfo match the one that we insert before server 340 * blocking? just to make sure no error happens 341 */ 342 if (mInfo.mId != mLocalShareInfoId) { 343 Log.e(TAG, "Unexpected error!"); 344 } 345 mAccepted = mInfo.mConfirm; 346 347 if (V) Log.v(TAG, "after confirm: userAccepted=" + mAccepted); 348 int status = BluetoothShare.STATUS_SUCCESS; 349 350 if (mAccepted == BluetoothShare.USER_CONFIRMATION_CONFIRMED 351 || mAccepted == BluetoothShare.USER_CONFIRMATION_AUTO_CONFIRMED 352 || mAccepted == BluetoothShare.USER_CONFIRMATION_HANDOVER_CONFIRMED) { 353 /* Confirm or auto-confirm */ 354 355 if (mFileInfo.mFileName == null) { 356 status = mFileInfo.mStatus; 357 /* TODO need to check if this line is correct */ 358 mInfo.mStatus = mFileInfo.mStatus; 359 Constants.updateShareStatus(mContext, mInfo.mId, status); 360 obexResponse = ResponseCodes.OBEX_HTTP_INTERNAL_ERROR; 361 362 } 363 364 if (mFileInfo.mFileName != null) { 365 366 ContentValues updateValues = new ContentValues(); 367 contentUri = Uri.parse(BluetoothShare.CONTENT_URI + "/" + mInfo.mId); 368 updateValues.put(BluetoothShare._DATA, mFileInfo.mFileName); 369 updateValues.put(BluetoothShare.STATUS, BluetoothShare.STATUS_RUNNING); 370 mContext.getContentResolver().update(contentUri, updateValues, null, null); 371 372 status = receiveFile(mFileInfo, op); 373 /* 374 * TODO map status to obex response code 375 */ 376 if (status != BluetoothShare.STATUS_SUCCESS) { 377 obexResponse = ResponseCodes.OBEX_HTTP_INTERNAL_ERROR; 378 } 379 Constants.updateShareStatus(mContext, mInfo.mId, status); 380 } 381 382 if (status == BluetoothShare.STATUS_SUCCESS) { 383 Message msg = Message.obtain(mCallback, BluetoothOppObexSession.MSG_SHARE_COMPLETE); 384 msg.obj = mInfo; 385 msg.sendToTarget(); 386 } else { 387 if (mCallback != null) { 388 Message msg = Message.obtain(mCallback, 389 BluetoothOppObexSession.MSG_SESSION_ERROR); 390 mInfo.mStatus = status; 391 msg.obj = mInfo; 392 msg.sendToTarget(); 393 } 394 } 395 } else if (mAccepted == BluetoothShare.USER_CONFIRMATION_DENIED 396 || mAccepted == BluetoothShare.USER_CONFIRMATION_TIMEOUT) { 397 /* user actively deny the inbound transfer */ 398 /* 399 * Note There is a question: what's next if user deny the first obj? 400 * Option 1 :continue prompt for next objects 401 * Option 2 :reject next objects and finish the session 402 * Now we take option 2: 403 */ 404 405 Log.i(TAG, "Rejected incoming request"); 406 if (mFileInfo.mFileName != null) { 407 try { 408 mFileInfo.mOutputStream.close(); 409 } catch (IOException e) { 410 Log.e(TAG, "error close file stream"); 411 } 412 new File(mFileInfo.mFileName).delete(); 413 } 414 // set status as local cancel 415 status = BluetoothShare.STATUS_CANCELED; 416 Constants.updateShareStatus(mContext, mInfo.mId, status); 417 obexResponse = ResponseCodes.OBEX_HTTP_FORBIDDEN; 418 419 Message msg = Message.obtain(mCallback); 420 msg.what = BluetoothOppObexSession.MSG_SHARE_INTERRUPTED; 421 mInfo.mStatus = status; 422 msg.obj = mInfo; 423 msg.sendToTarget(); 424 } 425 return obexResponse; 426 } 427 428 private int receiveFile(BluetoothOppReceiveFileInfo fileInfo, Operation op) { 429 /* 430 * implement receive file 431 */ 432 int status = -1; 433 BufferedOutputStream bos = null; 434 435 InputStream is = null; 436 boolean error = false; 437 try { 438 is = op.openInputStream(); 439 } catch (IOException e1) { 440 Log.e(TAG, "Error when openInputStream"); 441 status = BluetoothShare.STATUS_OBEX_DATA_ERROR; 442 error = true; 443 } 444 445 Uri contentUri = Uri.parse(BluetoothShare.CONTENT_URI + "/" + mInfo.mId); 446 447 if (!error) { 448 ContentValues updateValues = new ContentValues(); 449 updateValues.put(BluetoothShare._DATA, fileInfo.mFileName); 450 mContext.getContentResolver().update(contentUri, updateValues, null, null); 451 } 452 453 int position = 0; 454 if (!error) { 455 bos = new BufferedOutputStream(fileInfo.mOutputStream, 0x10000); 456 } 457 458 if (!error) { 459 int outputBufferSize = op.getMaxPacketSize(); 460 byte[] b = new byte[outputBufferSize]; 461 int readLength = 0; 462 long timestamp = 0; 463 try { 464 while ((!mInterrupted) && (position != fileInfo.mLength)) { 465 466 if (V) timestamp = System.currentTimeMillis(); 467 468 readLength = is.read(b); 469 470 if (readLength == -1) { 471 if (D) Log.d(TAG, "Receive file reached stream end at position" + position); 472 break; 473 } 474 475 bos.write(b, 0, readLength); 476 position += readLength; 477 478 if (V) { 479 Log.v(TAG, "Receive file position = " + position + " readLength " 480 + readLength + " bytes took " 481 + (System.currentTimeMillis() - timestamp) + " ms"); 482 } 483 484 ContentValues updateValues = new ContentValues(); 485 updateValues.put(BluetoothShare.CURRENT_BYTES, position); 486 mContext.getContentResolver().update(contentUri, updateValues, null, null); 487 } 488 } catch (IOException e1) { 489 Log.e(TAG, "Error when receiving file"); 490 /* OBEX Abort packet received from remote device */ 491 if ("Abort Received".equals(e1.getMessage())) { 492 status = BluetoothShare.STATUS_CANCELED; 493 } else { 494 status = BluetoothShare.STATUS_OBEX_DATA_ERROR; 495 } 496 error = true; 497 } 498 } 499 500 if (mInterrupted) { 501 if (D) Log.d(TAG, "receiving file interrupted by user."); 502 status = BluetoothShare.STATUS_CANCELED; 503 } else { 504 if (position == fileInfo.mLength) { 505 if (D) Log.d(TAG, "Receiving file completed for " + fileInfo.mFileName); 506 status = BluetoothShare.STATUS_SUCCESS; 507 } else { 508 if (D) Log.d(TAG, "Reading file failed at " + position + " of " + fileInfo.mLength); 509 if (status == -1) { 510 status = BluetoothShare.STATUS_UNKNOWN_ERROR; 511 } 512 } 513 } 514 515 if (bos != null) { 516 try { 517 bos.close(); 518 } catch (IOException e) { 519 Log.e(TAG, "Error when closing stream after send"); 520 } 521 } 522 return status; 523 } 524 525 private BluetoothOppReceiveFileInfo processShareInfo() { 526 if (D) Log.d(TAG, "processShareInfo() " + mInfo.mId); 527 BluetoothOppReceiveFileInfo fileInfo = BluetoothOppReceiveFileInfo.generateFileInfo( 528 mContext, mInfo.mId); 529 if (V) { 530 Log.v(TAG, "Generate BluetoothOppReceiveFileInfo:"); 531 Log.v(TAG, "filename :" + fileInfo.mFileName); 532 Log.v(TAG, "length :" + fileInfo.mLength); 533 Log.v(TAG, "status :" + fileInfo.mStatus); 534 } 535 return fileInfo; 536 } 537 538 @Override 539 public int onConnect(HeaderSet request, HeaderSet reply) { 540 541 if (D) Log.d(TAG, "onConnect"); 542 if (V) Constants.logHeader(request); 543 Long objectCount = null; 544 try { 545 byte[] uuid = (byte[])request.getHeader(HeaderSet.TARGET); 546 if (V) Log.v(TAG, "onConnect(): uuid =" + Arrays.toString(uuid)); 547 if(uuid != null) { 548 return ResponseCodes.OBEX_HTTP_NOT_ACCEPTABLE; 549 } 550 551 objectCount = (Long) request.getHeader(HeaderSet.COUNT); 552 } catch (IOException e) { 553 Log.e(TAG, e.toString()); 554 return ResponseCodes.OBEX_HTTP_INTERNAL_ERROR; 555 } 556 String destination; 557 if (mTransport instanceof BluetoothOppRfcommTransport) { 558 destination = ((BluetoothOppRfcommTransport)mTransport).getRemoteAddress(); 559 } else { 560 destination = "FF:FF:FF:00:00:00"; 561 } 562 boolean isHandover = BluetoothOppManager.getInstance(mContext). 563 isWhitelisted(destination); 564 if (isHandover) { 565 // Notify the handover requester file transfer has started 566 Intent intent = new Intent(Constants.ACTION_HANDOVER_STARTED); 567 if (objectCount != null) { 568 intent.putExtra(Constants.EXTRA_BT_OPP_OBJECT_COUNT, objectCount.intValue()); 569 } else { 570 intent.putExtra(Constants.EXTRA_BT_OPP_OBJECT_COUNT, 571 Constants.COUNT_HEADER_UNAVAILABLE); 572 } 573 intent.putExtra(Constants.EXTRA_BT_OPP_ADDRESS, destination); 574 mContext.sendBroadcast(intent, Constants.HANDOVER_STATUS_PERMISSION); 575 } 576 mTimestamp = System.currentTimeMillis(); 577 return ResponseCodes.OBEX_HTTP_OK; 578 } 579 580 @Override 581 public void onDisconnect(HeaderSet req, HeaderSet resp) { 582 if (D) Log.d(TAG, "onDisconnect"); 583 resp.responseCode = ResponseCodes.OBEX_HTTP_OK; 584 } 585 586 private synchronized void releaseWakeLocks() { 587 if (mWakeLock.isHeld()) { 588 mWakeLock.release(); 589 } 590 if (mPartialWakeLock.isHeld()) { 591 mPartialWakeLock.release(); 592 } 593 } 594 595 @Override 596 public void onClose() { 597 if (V) Log.v(TAG, "release WakeLock"); 598 releaseWakeLocks(); 599 600 /* onClose could happen even before start() where mCallback is set */ 601 if (mCallback != null) { 602 Message msg = Message.obtain(mCallback); 603 msg.what = BluetoothOppObexSession.MSG_SESSION_COMPLETE; 604 msg.obj = mInfo; 605 msg.sendToTarget(); 606 } 607 } 608 } 609
