/* * Copyright (c) 2008-2009, Motorola, Inc. * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Motorola, Inc. nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ package com.android.bluetooth.opp; import android.content.ContentResolver; import android.content.Context; import android.content.res.AssetFileDescriptor; import android.database.Cursor; import android.database.sqlite.SQLiteException; import android.net.Uri; import android.provider.OpenableColumns; import android.util.EventLog; import android.util.Log; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; /** * This class stores information about a single sending file It will only be * used for outbound share. */ public class BluetoothOppSendFileInfo { private static final String TAG = "BluetoothOppSendFileInfo"; private static final boolean D = Constants.DEBUG; /** Reusable SendFileInfo for error status. */ static final BluetoothOppSendFileInfo SEND_FILE_INFO_ERROR = new BluetoothOppSendFileInfo( null, null, 0, null, BluetoothShare.STATUS_FILE_ERROR); /** readable media file name */ public final String mFileName; /** media file input stream */ public final FileInputStream mInputStream; /** vCard string data */ public final String mData; public final int mStatus; public final String mMimetype; public final long mLength; /** for media file */ public BluetoothOppSendFileInfo(String fileName, String type, long length, FileInputStream inputStream, int status) { mFileName = fileName; mMimetype = type; mLength = length; mInputStream = inputStream; mStatus = status; mData = null; } /** for vCard, or later for vCal, vNote. Not used currently */ public BluetoothOppSendFileInfo(String data, String type, long length, int status) { mFileName = null; mInputStream = null; mData = data; mMimetype = type; mLength = length; mStatus = status; } public static BluetoothOppSendFileInfo generateFileInfo( Context context, Uri uri, String type, boolean fromExternal) { ContentResolver contentResolver = context.getContentResolver(); String scheme = uri.getScheme(); String fileName = null; String contentType; long length = 0; // Support all Uri with "content" scheme // This will allow more 3rd party applications to share files via // bluetooth if ("content".equals(scheme)) { contentType = contentResolver.getType(uri); Cursor metadataCursor; try { metadataCursor = contentResolver.query(uri, new String[] { OpenableColumns.DISPLAY_NAME, OpenableColumns.SIZE }, null, null, null); } catch (SQLiteException e) { // some content providers don't support the DISPLAY_NAME or SIZE columns metadataCursor = null; } catch (SecurityException e) { Log.e(TAG, "generateFileInfo: Permission error, could not access URI: " + uri); return SEND_FILE_INFO_ERROR; } if (metadataCursor != null) { try { if (metadataCursor.moveToFirst()) { fileName = metadataCursor.getString( metadataCursor.getColumnIndex(OpenableColumns.DISPLAY_NAME)); length = metadataCursor.getLong( metadataCursor.getColumnIndex(OpenableColumns.SIZE)); if (D) Log.d(TAG, "fileName = " + fileName + " length = " + length); } } finally { metadataCursor.close(); } } if (fileName == null) { // use last segment of URI if DISPLAY_NAME query fails fileName = uri.getLastPathSegment(); } } else if ("file".equals(scheme)) { if (uri.getPath() == null) { Log.e(TAG, "Invalid URI path: " + uri); return SEND_FILE_INFO_ERROR; } if (fromExternal && !BluetoothOppUtility.isInExternalStorageDir(uri)) { EventLog.writeEvent(0x534e4554, "35310991", -1, uri.getPath()); Log.e(TAG, "File based URI not in Environment.getExternalStorageDirectory() is not allowed."); return SEND_FILE_INFO_ERROR; } fileName = uri.getLastPathSegment(); contentType = type; File f = new File(uri.getPath()); length = f.length(); } else { // currently don't accept other scheme return SEND_FILE_INFO_ERROR; } FileInputStream is = null; if (scheme.equals("content")) { try { // We've found that content providers don't always have the // right size in _OpenableColumns.SIZE // As a second source of getting the correct file length, // get a file descriptor and get the stat length AssetFileDescriptor fd = contentResolver.openAssetFileDescriptor(uri, "r"); long statLength = fd.getLength(); if (length != statLength && statLength > 0) { Log.e(TAG, "Content provider length is wrong (" + Long.toString(length) + "), using stat length (" + Long.toString(statLength) + ")"); length = statLength; } try { // This creates an auto-closing input-stream, so // the file descriptor will be closed whenever the InputStream // is closed. is = fd.createInputStream(); // If the database doesn't contain the file size, get the size // by reading through the entire stream if (length == 0) { length = getStreamSize(is); Log.w(TAG, "File length not provided. Length from stream = " + length); // Reset the stream fd = contentResolver.openAssetFileDescriptor(uri, "r"); is = fd.createInputStream(); } } catch (IOException e) { try { fd.close(); } catch (IOException e2) { // Ignore } } } catch (FileNotFoundException e) { // Ignore } } if (is == null) { try { is = (FileInputStream) contentResolver.openInputStream(uri); // If the database doesn't contain the file size, get the size // by reading through the entire stream if (length == 0) { length = getStreamSize(is); // Reset the stream is = (FileInputStream) contentResolver.openInputStream(uri); } } catch (FileNotFoundException e) { return SEND_FILE_INFO_ERROR; } catch (IOException e) { return SEND_FILE_INFO_ERROR; } } if (length == 0) { Log.e(TAG, "Could not determine size of file"); return SEND_FILE_INFO_ERROR; } else if (length > 0xffffffffL) { String msg = "Files bigger than 4GB can't be transferred"; Log.e(TAG, msg); throw new IllegalArgumentException(msg); } return new BluetoothOppSendFileInfo(fileName, contentType, length, is, 0); } private static long getStreamSize(FileInputStream is) throws IOException { long length = 0; byte unused[] = new byte[4096]; int bytesRead = is.read(unused, 0, 4096); while (bytesRead != -1) { length += bytesRead; bytesRead = is.read(unused, 0, 4096); } return length; } }