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annotate Core/TemporaryFile.cpp @ 3181:6fd38327e777

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Fix issue #130 (Orthanc failed to start when /tmp partition was full)
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 31 Jan 2019 15:33:27 +0100
parents 4e43e67f8ecf
children 5d1f5984dc41
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 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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33
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34 #include "PrecompiledHeaders.h"
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35 #include "TemporaryFile.h"
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37 #include "OrthancException.h"
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38 #include "SystemToolbox.h"
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39 #include "Toolbox.h"
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40
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41 #include <boost/filesystem.hpp>
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42
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43 namespace Orthanc
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44 {
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45 static std::string CreateTemporaryPath(const char* temporaryDirectory,
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46 const char* extension)
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47 {
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48 boost::filesystem::path dir;
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49
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50 if (temporaryDirectory == NULL)
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51 {
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52 #if BOOST_HAS_FILESYSTEM_V3 == 1
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53 dir = boost::filesystem::temp_directory_path();
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54 #elif defined(__linux__)
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55 dir = "/tmp";
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56 #else
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57 # error Support your platform here
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58 #endif
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59 }
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60 else
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61 {
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62 dir = temporaryDirectory;
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63 }
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65 // We use UUID to create unique path to temporary files
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66 std::string filename = "Orthanc-" + Orthanc::Toolbox::GenerateUuid();
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68 if (extension != NULL)
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69 {
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70 filename.append(extension);
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71 }
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73 dir /= filename;
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74 return dir.string();
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75 }
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78 TemporaryFile::TemporaryFile() :
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79 path_(CreateTemporaryPath(NULL, NULL))
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80 {
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81 }
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84 TemporaryFile::TemporaryFile(const std::string& temporaryDirectory,
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85 const std::string& extension) :
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86 path_(CreateTemporaryPath(temporaryDirectory.c_str(), extension.c_str()))
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87 {
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88 }
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91 TemporaryFile::~TemporaryFile()
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92 {
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93 boost::filesystem::remove(path_);
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94 }
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97 void TemporaryFile::Write(const std::string& content)
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98 {
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99 try
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100 {
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101 SystemToolbox::WriteFile(content, path_);
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102 }
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103 catch (OrthancException&)
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104 {
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105 LOG(ERROR) << "Can't create temporary file \"" << path_
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106 << "\" with " << content.size()
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107 << " bytes: Check you have write access to the "
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108 << "temporary directory and that it is not full";
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109 throw;
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110 }
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111 }
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113
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114 void TemporaryFile::Read(std::string& content) const
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115 {
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116 try
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117 {
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118 SystemToolbox::ReadFile(content, path_);
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119 }
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120 catch (OrthancException&)
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121 {
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122 LOG(ERROR) << "Can't read temporary file \"" << path_
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123 << "\": Another process has corrupted the temporary directory";
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124 throw;
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125 }
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126 }
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127
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128
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129 void TemporaryFile::Touch()
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130 {
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131 std::string empty;
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132 Write(empty);
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133 }
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Sebastien Jodogne <s.jodogne@gmail.com>
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