This file is indexed.

/usr/include/rosbag/stream.h is in librosbag-storage-dev 1.13.5+ds1-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
/*********************************************************************
* Software License Agreement (BSD License)
*
*  Copyright (c) 2008, Willow Garage, 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 Willow Garage, 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 OWNER 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.
********************************************************************/

#ifndef ROSBAG_STREAM_H
#define ROSBAG_STREAM_H

#include <ios>
#include <stdint.h>
#include <string>

#include <boost/shared_ptr.hpp>

#include <bzlib.h>

#include <roslz4/lz4s.h>

#include "rosbag/exceptions.h"
#include "rosbag/macros.h"

namespace rosbag {

namespace compression
{
    enum CompressionType
    {
        Uncompressed = 0,
        BZ2          = 1,
        LZ4          = 2,
    };
}
typedef compression::CompressionType CompressionType;

class ChunkedFile;

class FileAccessor;

class ROSBAG_DECL Stream
{
    friend class FileAccessor;
public:
    Stream(ChunkedFile* file);
    virtual ~Stream();

    virtual CompressionType getCompressionType() const = 0;

    virtual void write(void* ptr, size_t size) = 0;
    virtual void read (void* ptr, size_t size) = 0;

    virtual void decompress(uint8_t* dest, unsigned int dest_len, uint8_t* source, unsigned int source_len) = 0;

    virtual void startWrite();
    virtual void stopWrite();

    virtual void startRead();
    virtual void stopRead();

protected:
    FILE*    getFilePointer();
    uint64_t getCompressedIn();
    void     setCompressedIn(uint64_t nbytes);
    void     advanceOffset(uint64_t nbytes);
    char*    getUnused();
    int      getUnusedLength();
    void     setUnused(char* unused);
    void     setUnusedLength(int nUnused);
    void     clearUnused();

protected:
    ChunkedFile* file_;
};

class ROSBAG_DECL StreamFactory
{
public:
    StreamFactory(ChunkedFile* file);

    boost::shared_ptr<Stream> getStream(CompressionType type) const;

private:
    boost::shared_ptr<Stream> uncompressed_stream_;
    boost::shared_ptr<Stream> bz2_stream_;
    boost::shared_ptr<Stream> lz4_stream_;
};

class FileAccessor {
    friend class ChunkedFile;
    static void setFile(Stream& a, ChunkedFile* file) {
        a.file_ = file;
    }
};

class ROSBAG_DECL UncompressedStream : public Stream
{
public:
    UncompressedStream(ChunkedFile* file);

    CompressionType getCompressionType() const;

    void write(void* ptr, size_t size);
    void read(void* ptr, size_t size);

    void decompress(uint8_t* dest, unsigned int dest_len, uint8_t* source, unsigned int source_len);
};

/*!
 * BZ2Stream uses libbzip2 (http://www.bzip.org) for reading/writing compressed data in the BZ2 format.
 */
class ROSBAG_DECL BZ2Stream : public Stream
{
public:
    BZ2Stream(ChunkedFile* file);

    CompressionType getCompressionType() const;

    void startWrite();
    void write(void* ptr, size_t size);
    void stopWrite();

    void startRead();
    void read(void* ptr, size_t size);
    void stopRead();

    void decompress(uint8_t* dest, unsigned int dest_len, uint8_t* source, unsigned int source_len);

private:
    int     verbosity_;        //!< level of debugging output (0-4; 0 default). 0 is silent, 4 is max verbose debugging output
    int     block_size_100k_;  //!< compression block size (1-9; 9 default). 9 is best compression, most memory
    int     work_factor_;      //!< compression behavior for worst case, highly repetitive data (0-250; 30 default)

    BZFILE* bzfile_;           //!< bzlib compressed file stream
    int     bzerror_;          //!< last error from bzlib
};

// LZ4Stream reads/writes compressed datat in the LZ4 format
// https://code.google.com/p/lz4/
class ROSBAG_DECL LZ4Stream : public Stream
{
public:
    LZ4Stream(ChunkedFile* file);
    ~LZ4Stream();

    CompressionType getCompressionType() const;

    void startWrite();
    void write(void* ptr, size_t size);
    void stopWrite();

    void startRead();
    void read(void* ptr, size_t size);
    void stopRead();

    void decompress(uint8_t* dest, unsigned int dest_len, uint8_t* source, unsigned int source_len);

private:
    LZ4Stream(const LZ4Stream&);
    LZ4Stream operator=(const LZ4Stream&);
    void writeStream(int action);

    char *buff_;
    int buff_size_;
    int block_size_id_;
    roslz4_stream lz4s_;
};



} // namespace rosbag

#endif