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 android.content.ContentResolver;
36import android.content.Context;
37import android.content.res.AssetFileDescriptor;
38import android.database.Cursor;
39import android.database.sqlite.SQLiteException;
40import android.net.Uri;
41import android.provider.OpenableColumns;
42import android.util.Log;
43
44import java.io.File;
45import java.io.FileInputStream;
46import java.io.FileNotFoundException;
47import java.io.IOException;
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    /** Reusable SendFileInfo for error status. */
61    static final BluetoothOppSendFileInfo SEND_FILE_INFO_ERROR = new BluetoothOppSendFileInfo(
62            null, null, 0, null, BluetoothShare.STATUS_FILE_ERROR);
63
64    /** readable media file name */
65    public final String mFileName;
66
67    /** media file input stream */
68    public final FileInputStream mInputStream;
69
70    /** vCard string data */
71    public final String mData;
72
73    public final int mStatus;
74
75    public final String mMimetype;
76
77    public final long mLength;
78
79    /** for media file */
80    public BluetoothOppSendFileInfo(String fileName, String type, long length,
81            FileInputStream inputStream, int status) {
82        mFileName = fileName;
83        mMimetype = type;
84        mLength = length;
85        mInputStream = inputStream;
86        mStatus = status;
87        mData = null;
88    }
89
90    /** for vCard, or later for vCal, vNote. Not used currently */
91    public BluetoothOppSendFileInfo(String data, String type, long length, int status) {
92        mFileName = null;
93        mInputStream = null;
94        mData = data;
95        mMimetype = type;
96        mLength = length;
97        mStatus = status;
98    }
99
100    public static BluetoothOppSendFileInfo generateFileInfo(Context context, Uri uri,
101            String type) {
102        ContentResolver contentResolver = context.getContentResolver();
103        String scheme = uri.getScheme();
104        String fileName = null;
105        String contentType;
106        long length = 0;
107        // Support all Uri with "content" scheme
108        // This will allow more 3rd party applications to share files via
109        // bluetooth
110        if ("content".equals(scheme)) {
111            contentType = contentResolver.getType(uri);
112            Cursor metadataCursor;
113            try {
114                metadataCursor = contentResolver.query(uri, new String[] {
115                        OpenableColumns.DISPLAY_NAME, OpenableColumns.SIZE
116                }, null, null, null);
117            } catch (SQLiteException e) {
118                // some content providers don't support the DISPLAY_NAME or SIZE columns
119                metadataCursor = null;
120            }
121            if (metadataCursor != null) {
122                try {
123                    if (metadataCursor.moveToFirst()) {
124                        fileName = metadataCursor.getString(0);
125                        length = metadataCursor.getInt(1);
126                        if (D) Log.d(TAG, "fileName = " + fileName + " length = " + length);
127                    }
128                } finally {
129                    metadataCursor.close();
130                }
131            }
132            if (fileName == null) {
133                // use last segment of URI if DISPLAY_NAME query fails
134                fileName = uri.getLastPathSegment();
135            }
136        } else if ("file".equals(scheme)) {
137            fileName = uri.getLastPathSegment();
138            contentType = type;
139            File f = new File(uri.getPath());
140            length = f.length();
141        } else {
142            // currently don't accept other scheme
143            return SEND_FILE_INFO_ERROR;
144        }
145        FileInputStream is = null;
146        if (scheme.equals("content")) {
147            try {
148                // We've found that content providers don't always have the
149                // right size in _OpenableColumns.SIZE
150                // As a second source of getting the correct file length,
151                // get a file descriptor and get the stat length
152                AssetFileDescriptor fd = contentResolver.openAssetFileDescriptor(uri, "r");
153                long statLength = fd.getLength();
154                if (length != statLength && statLength > 0) {
155                    Log.e(TAG, "Content provider length is wrong (" + Long.toString(length) +
156                            "), using stat length (" + Long.toString(statLength) + ")");
157                    length = statLength;
158                }
159                try {
160                    // This creates an auto-closing input-stream, so
161                    // the file descriptor will be closed whenever the InputStream
162                    // is closed.
163                    is = fd.createInputStream();
164                } catch (IOException e) {
165                    try {
166                        fd.close();
167                    } catch (IOException e2) {
168                        // Ignore
169                    }
170                }
171            } catch (FileNotFoundException e) {
172                // Ignore
173            }
174        }
175        if (is == null) {
176            try {
177                is = (FileInputStream) contentResolver.openInputStream(uri);
178            } catch (FileNotFoundException e) {
179                return SEND_FILE_INFO_ERROR;
180            }
181        }
182        // If we can not get file length from content provider, we can try to
183        // get the length via the opened stream.
184        if (length == 0) {
185            try {
186                length = is.available();
187                if (V) Log.v(TAG, "file length is " + length);
188            } catch (IOException e) {
189                Log.e(TAG, "Read stream exception: ", e);
190                return SEND_FILE_INFO_ERROR;
191            }
192        }
193
194        return new BluetoothOppSendFileInfo(fileName, contentType, length, is, 0);
195    }
196}
197