BluetoothOppSendFileInfo.java revision fdc7bd89b00e40b459c706784fa003509a229096 
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
33package com.android.bluetooth.opp;
34
35import java.io.File;
36import java.io.IOException;
37import java.io.FileInputStream;
38import java.io.FileNotFoundException;
39
40import android.util.Log;
41import android.content.ContentResolver;
42import android.content.Context;
43import android.content.res.AssetFileDescriptor;
44import android.database.Cursor;
45import android.net.Uri;
46import android.os.ParcelFileDescriptor;
47import android.provider.OpenableColumns;
48
49/**
50 * This class stores information about a single sending file It will only be
51 * used for outbound share.
52 */
53public class BluetoothOppSendFileInfo {
54    private static final String TAG = "BluetoothOppSendFileInfo";
55
56    private static final boolean D = Constants.DEBUG;
57
58    private static final boolean V = Constants.VERBOSE;
59
60    /** readable media file name */
61    public final String mFileName;
62
63    /** media file input stream */
64    public final FileInputStream mInputStream;
65
66    /** vCard string data */
67    public final String mData;
68
69    public final int mStatus;
70
71    public final String mMimetype;
72
73    public final long mLength;
74
75    public final String mDestAddr;
76
77    /** for media file */
78    public BluetoothOppSendFileInfo(String fileName, String type, long length,
79            FileInputStream inputStream, int status, String dest) {
80        mFileName = fileName;
81        mMimetype = type;
82        mLength = length;
83        mInputStream = inputStream;
84        mStatus = status;
85        mDestAddr = dest;
86        mData = null;
87    }
88
89    /** for vCard, or later for vCal, vNote. Not used currently */
90    public BluetoothOppSendFileInfo(String data, String type, long length, int status,
91            String dest) {
92        mFileName = null;
93        mInputStream = null;
94        mData = data;
95        mMimetype = type;
96        mLength = length;
97        mStatus = status;
98        mDestAddr = dest;
99    }
100
101    public static BluetoothOppSendFileInfo generateFileInfo(Context context, String uri,
102            String type, String dest) {
103        ContentResolver contentResolver = context.getContentResolver();
104        Uri u = Uri.parse(uri);
105        String scheme = u.getScheme();
106        String fileName = null;
107        String contentType = null;
108        long length = 0;
109        // Support all Uri with "content" scheme
110        // This will allow more 3rd party applications to share files via
111        // bluetooth
112        if (scheme.equals("content")) {
113            contentType = contentResolver.getType(u);
114            Cursor metadataCursor = contentResolver.query(u, new String[] {
115                    OpenableColumns.DISPLAY_NAME, OpenableColumns.SIZE
116            }, null, null, null);
117            if (metadataCursor != null) {
118                try {
119                    if (metadataCursor.moveToFirst()) {
120                        fileName = metadataCursor.getString(0);
121                        length = metadataCursor.getInt(1);
122                        if (D) Log.d(TAG, "fileName = " + fileName + " length = " + length);
123                    }
124                } finally {
125                    metadataCursor.close();
126                }
127            }
128        } else if (scheme.equals("file")) {
129            fileName = u.getLastPathSegment();
130            contentType = type;
131            File f = new File(u.getPath());
132            length = f.length();
133        } else {
134            // currently don't accept other scheme
135            return new BluetoothOppSendFileInfo(null, null, 0, null,
136                    BluetoothShare.STATUS_FILE_ERROR, dest);
137        }
138        FileInputStream is = null;
139        if (scheme.equals("content")) {
140            AssetFileDescriptor fd = null;
141            try {
142                // We've found that content providers don't always have the
143                // right size in _OpenableColumns.SIZE
144                // As a second source of getting the correct file length,
145                // get a file descriptor and get the stat length
146                fd = contentResolver.openAssetFileDescriptor(u, "r");
147                long statLength = fd.getLength();
148                if (length != statLength && statLength > 0) {
149                    Log.e(TAG, "Content provider length is wrong (" + Long.toString(length) +
150                            "), using stat length (" + Long.toString(statLength) + ")");
151                    length = statLength;
152                }
153                try {
154                    // This creates an auto-closing input-stream, so
155                    // the file descriptor will be closed whenever the InputStream
156                    // is closed.
157                    is = (FileInputStream)fd.createInputStream();
158                } catch (IOException e) {
159                    try {
160                        fd.close();
161                    } catch (IOException e2) {
162                        // Ignore
163                    }
164                }
165            } catch (FileNotFoundException e) {
166                // Ignore
167            }
168        }
169        if (is == null) {
170            try {
171                is = (FileInputStream)contentResolver.openInputStream(u);
172            } catch (FileNotFoundException e) {
173                return new BluetoothOppSendFileInfo(null, null, 0, null,
174                        BluetoothShare.STATUS_FILE_ERROR, dest);
175            }
176        }
177        // If we can not get file length from content provider, we can try to
178        // get the length via the opened stream.
179        if (length == 0) {
180            try {
181                length = is.available();
182                if (V) Log.v(TAG, "file length is " + length);
183            } catch (IOException e) {
184                Log.e(TAG, "Read stream exception: ", e);
185                return new BluetoothOppSendFileInfo(null, null, 0, null,
186                        BluetoothShare.STATUS_FILE_ERROR, dest);
187            }
188        }
189
190        return new BluetoothOppSendFileInfo(fileName, contentType, length, is, 0, dest);
191    }
192}
193