annotate Core/Compression/GzipCompressor.cpp @ 3801:9fe1d64a748c

upgrade to civetweb 1.12, error reporting if OpenSSL failure
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 02 Apr 2020 11:24:47 +0200
parents 94f4a18a79cc
children
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
1900
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
3640
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #include "../PrecompiledHeaders.h"
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35 #include "GzipCompressor.h"
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36
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37 #include <stdio.h>
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38 #include <string.h>
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39 #include <zlib.h>
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40
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41 #include "../OrthancException.h"
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42 #include "../Logging.h"
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43
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44 namespace Orthanc
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45 {
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46 uint64_t GzipCompressor::GuessUncompressedSize(const void* compressed,
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47 size_t compressedSize)
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48 {
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49 /**
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50 * "Is there a way to find out the size of the original file which
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51 * is inside a GZIP file? [...] There is no truly reliable way,
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52 * other than gunzipping the stream. You do not need to save the
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53 * result of the decompression, so you can determine the size by
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54 * simply reading and decoding the entire file without taking up
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55 * space with the decompressed result.
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56 *
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57 * There is an unreliable way to determine the uncompressed size,
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58 * which is to look at the last four bytes of the gzip file, which
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59 * is the uncompressed length of that entry modulo 232 in little
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60 * endian order.
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61 *
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62 * It is unreliable because a) the uncompressed data may be longer
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63 * than 2^32 bytes, and b) the gzip file may consist of multiple
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64 * gzip streams, in which case you would find the length of only
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65 * the last of those streams.
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66 *
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67 * If you are in control of the source of the gzip files, you know
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68 * that they consist of single gzip streams, and you know that
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69 * they are less than 2^32 bytes uncompressed, then and only then
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70 * can you use those last four bytes with confidence."
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71 *
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72 * http://stackoverflow.com/a/9727599/881731
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73 **/
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74
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75 if (compressedSize < 4)
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76 {
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77 throw OrthancException(ErrorCode_BadFileFormat);
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78 }
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79
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80 const uint8_t* p = reinterpret_cast<const uint8_t*>(compressed) + compressedSize - 4;
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81
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82 return ((static_cast<uint32_t>(p[0]) << 0) +
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83 (static_cast<uint32_t>(p[1]) << 8) +
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84 (static_cast<uint32_t>(p[2]) << 16) +
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85 (static_cast<uint32_t>(p[3]) << 24));
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86 }
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87
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88
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89
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90 void GzipCompressor::Compress(std::string& compressed,
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91 const void* uncompressed,
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92 size_t uncompressedSize)
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93 {
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94 uLongf compressedSize = compressBound(static_cast<uLong>(uncompressedSize))
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95 + 1024 /* security margin */;
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96
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97 if (compressedSize == 0)
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98 {
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99 compressedSize = 1;
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100 }
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101
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102 uint8_t* target;
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103 if (HasPrefixWithUncompressedSize())
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104 {
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105 compressed.resize(compressedSize + sizeof(uint64_t));
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106 target = reinterpret_cast<uint8_t*>(&compressed[0]) + sizeof(uint64_t);
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107 }
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108 else
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109 {
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110 compressed.resize(compressedSize);
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111 target = reinterpret_cast<uint8_t*>(&compressed[0]);
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112 }
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113
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114 z_stream stream;
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115 memset(&stream, 0, sizeof(stream));
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116
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117 stream.next_in = const_cast<Bytef*>(reinterpret_cast<const Bytef*>(uncompressed));
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118 stream.next_out = reinterpret_cast<Bytef*>(target);
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119
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120 stream.avail_in = static_cast<uInt>(uncompressedSize);
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121 stream.avail_out = static_cast<uInt>(compressedSize);
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122
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123 // Ensure no overflow (if the buffer is too large for the current archicture)
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124 if (static_cast<size_t>(stream.avail_in) != uncompressedSize ||
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125 static_cast<size_t>(stream.avail_out) != compressedSize)
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126 {
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127 throw OrthancException(ErrorCode_NotEnoughMemory);
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128 }
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129
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130 // Initialize the compression engine
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131 int error = deflateInit2(&stream,
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132 GetCompressionLevel(),
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133 Z_DEFLATED,
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134 MAX_WBITS + 16, // ask for gzip output
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135 8, // default memory level
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136 Z_DEFAULT_STRATEGY);
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137
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138 if (error != Z_OK)
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139 {
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140 // Cannot initialize zlib
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141 compressed.clear();
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142 throw OrthancException(ErrorCode_InternalError);
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143 }
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144
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
145 // Compress the input buffer
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
146 error = deflate(&stream, Z_FINISH);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
147
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
148 if (error != Z_STREAM_END)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
149 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
150 deflateEnd(&stream);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
151 compressed.clear();
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
152
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
153 switch (error)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
154 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
155 case Z_MEM_ERROR:
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
156 throw OrthancException(ErrorCode_NotEnoughMemory);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
157
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
158 default:
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
159 throw OrthancException(ErrorCode_InternalError);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
160 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
161 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
162
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
163 size_t size = stream.total_out;
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
164
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
165 if (deflateEnd(&stream) != Z_OK)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
166 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
167 throw OrthancException(ErrorCode_InternalError);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
168 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
169
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
170 // The compression was successful
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
171 if (HasPrefixWithUncompressedSize())
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
172 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
173 uint64_t s = static_cast<uint64_t>(uncompressedSize);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
174 memcpy(&compressed[0], &s, sizeof(uint64_t));
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
175 compressed.resize(size + sizeof(uint64_t));
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
176 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
177 else
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
178 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
179 compressed.resize(size);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
180 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
181 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
182
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
183
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
184 void GzipCompressor::Uncompress(std::string& uncompressed,
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
185 const void* compressed,
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
186 size_t compressedSize)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
187 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
188 uint64_t uncompressedSize;
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
189 const uint8_t* source = reinterpret_cast<const uint8_t*>(compressed);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
190
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
191 if (HasPrefixWithUncompressedSize())
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
192 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
193 uncompressedSize = ReadUncompressedSizePrefix(compressed, compressedSize);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
194 source += sizeof(uint64_t);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
195 compressedSize -= sizeof(uint64_t);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
196 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
197 else
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
198 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
199 uncompressedSize = GuessUncompressedSize(compressed, compressedSize);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
200 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
201
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
202 try
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
203 {
1545
33d34bc4ac15 fix msvc warnings
jodogne
parents: 1513
diff changeset
204 uncompressed.resize(static_cast<size_t>(uncompressedSize));
1513
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
205 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
206 catch (...)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
207 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
208 throw OrthancException(ErrorCode_NotEnoughMemory);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
209 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
210
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
211 z_stream stream;
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
212 memset(&stream, 0, sizeof(stream));
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
213
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
214 char dummy = '\0'; // zlib does not like NULL output buffers (even if the uncompressed data is empty)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
215 stream.next_in = const_cast<Bytef*>(source);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
216 stream.next_out = reinterpret_cast<Bytef*>(uncompressedSize == 0 ? &dummy : &uncompressed[0]);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
217
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
218 stream.avail_in = static_cast<uInt>(compressedSize);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
219 stream.avail_out = static_cast<uInt>(uncompressedSize);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
220
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
221 // Ensure no overflow (if the buffer is too large for the current archicture)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
222 if (static_cast<size_t>(stream.avail_in) != compressedSize ||
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
223 static_cast<size_t>(stream.avail_out) != uncompressedSize)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
224 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
225 throw OrthancException(ErrorCode_NotEnoughMemory);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
226 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
227
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
228 // Initialize the compression engine
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
229 int error = inflateInit2(&stream,
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
230 MAX_WBITS + 16); // this is a gzip input
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
231
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
232 if (error != Z_OK)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
233 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
234 // Cannot initialize zlib
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
235 uncompressed.clear();
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
236 throw OrthancException(ErrorCode_InternalError);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
237 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
238
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
239 // Uncompress the input buffer
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
240 error = inflate(&stream, Z_FINISH);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
241
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
242 if (error != Z_STREAM_END)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
243 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
244 inflateEnd(&stream);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
245 uncompressed.clear();
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
246
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
247 switch (error)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
248 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
249 case Z_MEM_ERROR:
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
250 throw OrthancException(ErrorCode_NotEnoughMemory);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
251
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
252 case Z_BUF_ERROR:
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
253 case Z_NEED_DICT:
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
254 throw OrthancException(ErrorCode_BadFileFormat);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
255
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
256 default:
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
257 throw OrthancException(ErrorCode_InternalError);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
258 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
259 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
260
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
261 size_t size = stream.total_out;
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
262
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
263 if (inflateEnd(&stream) != Z_OK)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
264 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
265 uncompressed.clear();
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
266 throw OrthancException(ErrorCode_InternalError);
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
267 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
268
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
269 if (size != uncompressedSize)
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
270 {
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
271 uncompressed.clear();
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
272
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
273 // The uncompressed size was not that properly guess, presumably
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
274 // because of a file size over 4GB. Should fallback to
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
275 // stream-based decompression.
2954
d924f9bb61cc taking advantage of details in OrthancException
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
276 throw OrthancException(ErrorCode_NotImplemented,
d924f9bb61cc taking advantage of details in OrthancException
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
277 "The uncompressed size of a gzip-encoded buffer was not properly guessed");
1513
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
278 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
279 }
fe07f82d83d3 gzip compression
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
280 }