Mercurial > hg > orthanc-stone
annotate Resources/Orthanc/Core/SystemToolbox.cpp @ 206:795d71f66f31
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 29 Mar 2018 10:09:03 +0200 |
parents | e7f90aba3c97 |
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rev | line source |
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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) 2017-2018 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 "SystemToolbox.h" |
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36 |
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37 |
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38 #if defined(_WIN32) |
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39 # include <windows.h> |
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40 # include <process.h> // For "_spawnvp()" and "_getpid()" |
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41 #else |
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42 # include <unistd.h> // For "execvp()" |
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43 # include <sys/wait.h> // For "waitpid()" |
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44 #endif |
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45 |
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46 |
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47 #if defined(__APPLE__) && defined(__MACH__) |
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48 # include <mach-o/dyld.h> /* _NSGetExecutablePath */ |
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49 # include <limits.h> /* PATH_MAX */ |
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50 #endif |
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51 |
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52 |
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53 #if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
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54 # include <limits.h> /* PATH_MAX */ |
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55 # include <signal.h> |
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56 # include <unistd.h> |
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57 #endif |
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58 |
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59 |
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60 #if defined(__OpenBSD__) |
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61 # include <sys/sysctl.h> // For "sysctl", "CTL_KERN" and "KERN_PROC_ARGS" |
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62 #endif |
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63 |
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64 |
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65 #include "Logging.h" |
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66 #include "OrthancException.h" |
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67 #include "Toolbox.h" |
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68 |
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69 #include <boost/filesystem.hpp> |
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70 #include <boost/filesystem/fstream.hpp> |
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71 #include <boost/date_time/posix_time/posix_time.hpp> |
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72 |
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73 |
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74 namespace Orthanc |
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75 { |
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76 static bool finish_; |
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77 static ServerBarrierEvent barrierEvent_; |
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78 |
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79 #if defined(_WIN32) |
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80 static BOOL WINAPI ConsoleControlHandler(DWORD dwCtrlType) |
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81 { |
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82 // http://msdn.microsoft.com/en-us/library/ms683242(v=vs.85).aspx |
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83 finish_ = true; |
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84 return true; |
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85 } |
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86 #else |
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87 static void SignalHandler(int signal) |
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88 { |
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89 if (signal == SIGHUP) |
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90 { |
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91 barrierEvent_ = ServerBarrierEvent_Reload; |
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92 } |
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93 |
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94 finish_ = true; |
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95 } |
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96 #endif |
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97 |
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98 |
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99 static ServerBarrierEvent ServerBarrierInternal(const bool* stopFlag) |
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100 { |
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101 #if defined(_WIN32) |
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102 SetConsoleCtrlHandler(ConsoleControlHandler, true); |
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103 #else |
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104 signal(SIGINT, SignalHandler); |
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105 signal(SIGQUIT, SignalHandler); |
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106 signal(SIGTERM, SignalHandler); |
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107 signal(SIGHUP, SignalHandler); |
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108 #endif |
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109 |
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110 // Active loop that awakens every 100ms |
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111 finish_ = false; |
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112 barrierEvent_ = ServerBarrierEvent_Stop; |
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113 while (!(*stopFlag || finish_)) |
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114 { |
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115 SystemToolbox::USleep(100 * 1000); |
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116 } |
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117 |
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118 #if defined(_WIN32) |
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119 SetConsoleCtrlHandler(ConsoleControlHandler, false); |
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120 #else |
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121 signal(SIGINT, NULL); |
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122 signal(SIGQUIT, NULL); |
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123 signal(SIGTERM, NULL); |
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124 signal(SIGHUP, NULL); |
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125 #endif |
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126 |
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127 return barrierEvent_; |
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128 } |
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129 |
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130 |
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131 ServerBarrierEvent SystemToolbox::ServerBarrier(const bool& stopFlag) |
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132 { |
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133 return ServerBarrierInternal(&stopFlag); |
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134 } |
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135 |
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136 |
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137 ServerBarrierEvent SystemToolbox::ServerBarrier() |
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138 { |
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139 const bool stopFlag = false; |
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140 return ServerBarrierInternal(&stopFlag); |
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141 } |
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142 |
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143 |
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144 void SystemToolbox::USleep(uint64_t microSeconds) |
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145 { |
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146 #if defined(_WIN32) |
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147 ::Sleep(static_cast<DWORD>(microSeconds / static_cast<uint64_t>(1000))); |
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148 #elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__native_client__) |
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149 usleep(microSeconds); |
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150 #else |
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151 #error Support your platform here |
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152 #endif |
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153 } |
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154 |
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155 |
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156 static std::streamsize GetStreamSize(std::istream& f) |
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157 { |
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158 // http://www.cplusplus.com/reference/iostream/istream/tellg/ |
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159 f.seekg(0, std::ios::end); |
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160 std::streamsize size = f.tellg(); |
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161 f.seekg(0, std::ios::beg); |
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162 |
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163 return size; |
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164 } |
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165 |
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166 |
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167 void SystemToolbox::ReadFile(std::string& content, |
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168 const std::string& path) |
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169 { |
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170 if (!IsRegularFile(path)) |
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171 { |
202 | 172 LOG(ERROR) << "The path does not point to a regular file: " << path; |
200
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173 throw OrthancException(ErrorCode_RegularFileExpected); |
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174 } |
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175 |
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176 boost::filesystem::ifstream f; |
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177 f.open(path, std::ifstream::in | std::ifstream::binary); |
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178 if (!f.good()) |
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179 { |
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180 throw OrthancException(ErrorCode_InexistentFile); |
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181 } |
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182 |
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183 std::streamsize size = GetStreamSize(f); |
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184 content.resize(static_cast<size_t>(size)); |
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185 if (size != 0) |
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186 { |
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187 f.read(reinterpret_cast<char*>(&content[0]), size); |
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188 } |
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189 |
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190 f.close(); |
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191 } |
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192 |
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193 |
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194 bool SystemToolbox::ReadHeader(std::string& header, |
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195 const std::string& path, |
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196 size_t headerSize) |
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197 { |
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198 if (!IsRegularFile(path)) |
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199 { |
202 | 200 LOG(ERROR) << "The path does not point to a regular file: " << path; |
200
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201 throw OrthancException(ErrorCode_RegularFileExpected); |
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202 } |
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203 |
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204 boost::filesystem::ifstream f; |
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205 f.open(path, std::ifstream::in | std::ifstream::binary); |
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206 if (!f.good()) |
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207 { |
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208 throw OrthancException(ErrorCode_InexistentFile); |
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209 } |
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210 |
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211 bool full = true; |
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212 |
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213 { |
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214 std::streamsize size = GetStreamSize(f); |
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215 if (size <= 0) |
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216 { |
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217 headerSize = 0; |
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218 full = false; |
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219 } |
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220 else if (static_cast<size_t>(size) < headerSize) |
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221 { |
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222 headerSize = static_cast<size_t>(size); // Truncate to the size of the file |
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223 full = false; |
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224 } |
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225 } |
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226 |
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227 header.resize(headerSize); |
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228 if (headerSize != 0) |
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229 { |
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230 f.read(reinterpret_cast<char*>(&header[0]), headerSize); |
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231 } |
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232 |
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233 f.close(); |
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234 |
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235 return full; |
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236 } |
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237 |
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238 |
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239 void SystemToolbox::WriteFile(const void* content, |
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240 size_t size, |
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241 const std::string& path) |
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242 { |
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243 boost::filesystem::ofstream f; |
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244 f.open(path, std::ofstream::out | std::ofstream::binary); |
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245 if (!f.good()) |
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246 { |
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247 throw OrthancException(ErrorCode_CannotWriteFile); |
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248 } |
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249 |
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250 if (size != 0) |
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251 { |
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252 f.write(reinterpret_cast<const char*>(content), size); |
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253 |
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254 if (!f.good()) |
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255 { |
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256 f.close(); |
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257 throw OrthancException(ErrorCode_FileStorageCannotWrite); |
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258 } |
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259 } |
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260 |
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261 f.close(); |
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262 } |
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263 |
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264 |
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265 void SystemToolbox::WriteFile(const std::string& content, |
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266 const std::string& path) |
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267 { |
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268 WriteFile(content.size() > 0 ? content.c_str() : NULL, |
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269 content.size(), path); |
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270 } |
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271 |
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272 |
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273 void SystemToolbox::RemoveFile(const std::string& path) |
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274 { |
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275 if (boost::filesystem::exists(path)) |
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276 { |
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277 if (IsRegularFile(path)) |
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278 { |
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279 boost::filesystem::remove(path); |
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280 } |
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281 else |
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282 { |
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283 throw OrthancException(ErrorCode_RegularFileExpected); |
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284 } |
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285 } |
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286 } |
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287 |
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288 |
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289 uint64_t SystemToolbox::GetFileSize(const std::string& path) |
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290 { |
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291 try |
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292 { |
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293 return static_cast<uint64_t>(boost::filesystem::file_size(path)); |
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294 } |
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295 catch (boost::filesystem::filesystem_error&) |
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296 { |
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297 throw OrthancException(ErrorCode_InexistentFile); |
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298 } |
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299 } |
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300 |
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301 |
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302 void SystemToolbox::MakeDirectory(const std::string& path) |
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303 { |
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304 if (boost::filesystem::exists(path)) |
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305 { |
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306 if (!boost::filesystem::is_directory(path)) |
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307 { |
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308 throw OrthancException(ErrorCode_DirectoryOverFile); |
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309 } |
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310 } |
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311 else |
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312 { |
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313 if (!boost::filesystem::create_directories(path)) |
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314 { |
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315 throw OrthancException(ErrorCode_MakeDirectory); |
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316 } |
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317 } |
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318 } |
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319 |
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320 |
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321 bool SystemToolbox::IsExistingFile(const std::string& path) |
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322 { |
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323 return boost::filesystem::exists(path); |
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324 } |
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325 |
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326 |
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327 #if defined(_WIN32) |
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328 static std::string GetPathToExecutableInternal() |
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329 { |
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330 // Yes, this is ugly, but there is no simple way to get the |
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331 // required buffer size, so we use a big constant |
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332 std::vector<char> buffer(32768); |
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333 /*int bytes =*/ GetModuleFileNameA(NULL, &buffer[0], static_cast<DWORD>(buffer.size() - 1)); |
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334 return std::string(&buffer[0]); |
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335 } |
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336 |
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337 #elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
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338 static std::string GetPathToExecutableInternal() |
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339 { |
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340 // NOTE: For FreeBSD, using KERN_PROC_PATHNAME might be a better alternative |
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341 |
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342 std::vector<char> buffer(PATH_MAX + 1); |
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343 ssize_t bytes = readlink("/proc/self/exe", &buffer[0], buffer.size() - 1); |
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344 if (bytes == 0) |
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345 { |
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346 throw OrthancException(ErrorCode_PathToExecutable); |
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347 } |
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348 |
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349 return std::string(&buffer[0]); |
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350 } |
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351 |
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352 #elif defined(__APPLE__) && defined(__MACH__) |
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353 static std::string GetPathToExecutableInternal() |
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354 { |
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355 char pathbuf[PATH_MAX + 1]; |
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356 unsigned int bufsize = static_cast<int>(sizeof(pathbuf)); |
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357 |
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358 _NSGetExecutablePath( pathbuf, &bufsize); |
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359 |
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360 return std::string(pathbuf); |
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361 } |
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362 |
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363 #elif defined(__OpenBSD__) |
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364 static std::string GetPathToExecutableInternal() |
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365 { |
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366 // This is an adapted version of the patch proposed in issue #64 |
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367 // without an explicit call to "malloc()" to prevent memory leak |
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368 // https://bitbucket.org/sjodogne/orthanc/issues/64/add-openbsd-support |
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369 // https://stackoverflow.com/q/31494901/881731 |
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370 |
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371 const int mib[4] = { CTL_KERN, KERN_PROC_ARGS, getpid(), KERN_PROC_ARGV }; |
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372 |
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373 size_t len; |
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374 if (sysctl(mib, 4, NULL, &len, NULL, 0) == -1) |
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375 { |
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376 throw OrthancException(ErrorCode_PathToExecutable); |
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377 } |
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378 |
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379 std::string tmp; |
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380 tmp.resize(len); |
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381 |
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382 char** buffer = reinterpret_cast<char**>(&tmp[0]); |
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383 |
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384 if (sysctl(mib, 4, buffer, &len, NULL, 0) == -1) |
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385 { |
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386 throw OrthancException(ErrorCode_PathToExecutable); |
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387 } |
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388 else |
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389 { |
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390 return std::string(buffer[0]); |
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391 } |
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392 } |
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393 |
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394 #else |
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395 #error Support your platform here |
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396 #endif |
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397 |
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398 |
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399 std::string SystemToolbox::GetPathToExecutable() |
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400 { |
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401 boost::filesystem::path p(GetPathToExecutableInternal()); |
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402 return boost::filesystem::absolute(p).string(); |
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403 } |
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404 |
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405 |
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406 std::string SystemToolbox::GetDirectoryOfExecutable() |
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407 { |
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408 boost::filesystem::path p(GetPathToExecutableInternal()); |
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409 return boost::filesystem::absolute(p.parent_path()).string(); |
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410 } |
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411 |
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412 |
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413 void SystemToolbox::ExecuteSystemCommand(const std::string& command, |
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414 const std::vector<std::string>& arguments) |
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415 { |
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416 // Convert the arguments as a C array |
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417 std::vector<char*> args(arguments.size() + 2); |
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418 |
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419 args.front() = const_cast<char*>(command.c_str()); |
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420 |
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421 for (size_t i = 0; i < arguments.size(); i++) |
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422 { |
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423 args[i + 1] = const_cast<char*>(arguments[i].c_str()); |
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424 } |
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425 |
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426 args.back() = NULL; |
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427 |
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428 int status; |
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429 |
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430 #if defined(_WIN32) |
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431 // http://msdn.microsoft.com/en-us/library/275khfab.aspx |
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432 status = static_cast<int>(_spawnvp(_P_OVERLAY, command.c_str(), &args[0])); |
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433 |
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434 #else |
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435 int pid = fork(); |
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436 |
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437 if (pid == -1) |
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438 { |
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439 // Error in fork() |
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440 #if ORTHANC_ENABLE_LOGGING == 1 |
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441 LOG(ERROR) << "Cannot fork a child process"; |
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442 #endif |
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443 |
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444 throw OrthancException(ErrorCode_SystemCommand); |
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445 } |
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446 else if (pid == 0) |
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447 { |
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448 // Execute the system command in the child process |
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449 execvp(command.c_str(), &args[0]); |
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450 |
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451 // We should never get here |
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452 _exit(1); |
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453 } |
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454 else |
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455 { |
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456 // Wait for the system command to exit |
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457 waitpid(pid, &status, 0); |
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458 } |
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459 #endif |
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460 |
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461 if (status != 0) |
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462 { |
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463 #if ORTHANC_ENABLE_LOGGING == 1 |
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464 LOG(ERROR) << "System command failed with status code " << status; |
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465 #endif |
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466 |
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467 throw OrthancException(ErrorCode_SystemCommand); |
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468 } |
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469 } |
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470 |
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471 |
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472 int SystemToolbox::GetProcessId() |
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473 { |
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474 #if defined(_WIN32) |
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475 return static_cast<int>(_getpid()); |
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476 #else |
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477 return static_cast<int>(getpid()); |
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478 #endif |
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479 } |
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480 |
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|
481 |
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482 bool SystemToolbox::IsRegularFile(const std::string& path) |
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483 { |
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484 namespace fs = boost::filesystem; |
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|
485 |
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|
486 try |
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|
487 { |
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488 if (fs::exists(path)) |
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489 { |
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490 fs::file_status status = fs::status(path); |
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491 return (status.type() == boost::filesystem::regular_file || |
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492 status.type() == boost::filesystem::reparse_file); // Fix BitBucket issue #11 |
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493 } |
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494 } |
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495 catch (fs::filesystem_error&) |
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496 { |
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497 } |
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|
498 |
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499 return false; |
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500 } |
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501 |
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502 |
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503 FILE* SystemToolbox::OpenFile(const std::string& path, |
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504 FileMode mode) |
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505 { |
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506 #if defined(_WIN32) |
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507 // TODO Deal with special characters by converting to the current locale |
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508 #endif |
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509 |
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510 const char* m; |
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511 switch (mode) |
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512 { |
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513 case FileMode_ReadBinary: |
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514 m = "rb"; |
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515 break; |
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516 |
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517 case FileMode_WriteBinary: |
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518 m = "wb"; |
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519 break; |
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520 |
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521 default: |
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522 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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523 } |
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524 |
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525 return fopen(path.c_str(), m); |
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526 } |
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527 |
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528 |
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529 static boost::posix_time::ptime GetNow(bool utc) |
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530 { |
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531 if (utc) |
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532 { |
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533 return boost::posix_time::second_clock::universal_time(); |
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534 } |
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535 else |
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536 { |
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537 return boost::posix_time::second_clock::local_time(); |
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538 } |
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539 } |
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540 |
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541 |
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542 std::string SystemToolbox::GetNowIsoString(bool utc) |
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543 { |
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544 return boost::posix_time::to_iso_string(GetNow(utc)); |
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545 } |
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546 |
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547 |
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548 void SystemToolbox::GetNowDicom(std::string& date, |
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549 std::string& time, |
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550 bool utc) |
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551 { |
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552 boost::posix_time::ptime now = GetNow(utc); |
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553 tm tm = boost::posix_time::to_tm(now); |
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554 |
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555 char s[32]; |
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556 sprintf(s, "%04d%02d%02d", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); |
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557 date.assign(s); |
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558 |
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559 // TODO milliseconds |
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560 sprintf(s, "%02d%02d%02d.%06d", tm.tm_hour, tm.tm_min, tm.tm_sec, 0); |
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561 time.assign(s); |
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562 } |
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563 } |