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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 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "PrecompiledHeaders.h"
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34 #include "Uuid.h"
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35
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36 // http://stackoverflow.com/a/1626302
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37
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38 extern "C"
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39 {
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40 #ifdef WIN32
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41 #include <rpc.h>
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42 #else
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43 #include <uuid/uuid.h>
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44 #endif
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45 }
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46
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47 #include <boost/filesystem.hpp>
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48
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49 namespace Orthanc
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50 {
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51 namespace Toolbox
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52 {
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53 std::string GenerateUuid()
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54 {
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55 #ifdef WIN32
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56 UUID uuid;
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57 UuidCreate ( &uuid );
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58
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59 unsigned char * str;
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60 UuidToStringA ( &uuid, &str );
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61
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62 std::string s( ( char* ) str );
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63
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64 RpcStringFreeA ( &str );
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65 #else
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66 uuid_t uuid;
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67 uuid_generate_random ( uuid );
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68 char s[37];
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69 uuid_unparse ( uuid, s );
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70 #endif
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71 return s;
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72 }
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73
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74
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75 bool IsUuid(const std::string& str)
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76 {
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77 if (str.size() != 36)
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78 {
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79 return false;
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80 }
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81
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82 for (size_t i = 0; i < str.length(); i++)
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83 {
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84 if (i == 8 || i == 13 || i == 18 || i == 23)
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85 {
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86 if (str[i] != '-')
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87 return false;
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88 }
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89 else
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90 {
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91 if (!isalnum(str[i]))
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92 return false;
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93 }
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94 }
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95
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96 return true;
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97 }
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98
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99
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100 bool StartsWithUuid(const std::string& str)
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101 {
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102 if (str.size() < 36)
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103 {
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104 return false;
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105 }
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106
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107 if (str.size() == 36)
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108 {
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109 return IsUuid(str);
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110 }
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111
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112 assert(str.size() > 36);
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113 if (!isspace(str[36]))
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114 {
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115 return false;
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116 }
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117
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118 return IsUuid(str.substr(0, 36));
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119 }
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120
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121
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122 static std::string CreateTemporaryPath(const char* extension)
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123 {
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124 #if BOOST_HAS_FILESYSTEM_V3 == 1
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125 boost::filesystem::path tmpDir = boost::filesystem::temp_directory_path();
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126 #elif defined(__linux__)
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127 boost::filesystem::path tmpDir("/tmp");
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128 #else
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129 #error Support your platform here
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130 #endif
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131
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132 // We use UUID to create unique path to temporary files
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133 std::string filename = "Orthanc-" + Orthanc::Toolbox::GenerateUuid();
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134
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135 if (extension != NULL)
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136 {
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137 filename.append(extension);
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138 }
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139
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140 tmpDir /= filename;
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141 return tmpDir.string();
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142 }
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143
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144
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145 TemporaryFile::TemporaryFile() :
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146 path_(CreateTemporaryPath(NULL))
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147 {
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148 }
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149
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150
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151 TemporaryFile::TemporaryFile(const char* extension) :
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152 path_(CreateTemporaryPath(extension))
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153 {
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154 }
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155
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156
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157 TemporaryFile::~TemporaryFile()
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158 {
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159 boost::filesystem::remove(path_);
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160 }
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161 }
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162 }
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