Mercurial > hg > orthanc
annotate Core/SystemToolbox.cpp @ 2365:9e0eae8a5ea4
SystemToolbox::GetPathToExecutable() for OpenBSD
author | jodogne |
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date | Mon, 21 Aug 2017 17:15:51 +0200 |
parents | ae50eccd41b7 |
children | 2aff870c2c58 |
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 Osimis, 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 BOOST_HAS_DATE_TIME == 1 |
2173 | 39 # include <boost/date_time/posix_time/posix_time.hpp> |
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40 #endif |
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41 |
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42 |
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43 #if defined(_WIN32) |
2173 | 44 # include <windows.h> |
45 # include <process.h> // For "_spawnvp()" and "_getpid()" | |
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46 #else |
2173 | 47 # include <unistd.h> // For "execvp()" |
48 # include <sys/wait.h> // For "waitpid()" | |
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49 #endif |
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50 |
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52 #if defined(__APPLE__) && defined(__MACH__) |
2173 | 53 # include <mach-o/dyld.h> /* _NSGetExecutablePath */ |
54 # include <limits.h> /* PATH_MAX */ | |
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55 #endif |
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56 |
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58 #if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
2173 | 59 # include <limits.h> /* PATH_MAX */ |
60 # include <signal.h> | |
61 # include <unistd.h> | |
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62 #endif |
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63 |
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64 |
2365 | 65 #if defined(__OpenBSD__) |
66 # include <sys/sysctl.h> // For "sysctl", "CTL_KERN" and "KERN_PROC_ARGS" | |
67 #endif | |
68 | |
69 | |
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70 // Inclusions for UUID |
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71 // http://stackoverflow.com/a/1626302 |
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72 |
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73 extern "C" |
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74 { |
2364 | 75 #if defined(_WIN32) |
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76 # include <rpc.h> |
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77 #else |
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78 # include <uuid/uuid.h> |
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79 #endif |
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80 } |
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81 |
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82 |
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83 #include "Logging.h" |
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84 #include "OrthancException.h" |
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85 #include "Toolbox.h" |
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86 |
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87 #include <boost/filesystem.hpp> |
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88 #include <boost/filesystem/fstream.hpp> |
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89 |
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90 |
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91 namespace Orthanc |
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92 { |
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93 static bool finish_; |
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94 static ServerBarrierEvent barrierEvent_; |
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95 |
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96 #if defined(_WIN32) |
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97 static BOOL WINAPI ConsoleControlHandler(DWORD dwCtrlType) |
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98 { |
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99 // http://msdn.microsoft.com/en-us/library/ms683242(v=vs.85).aspx |
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100 finish_ = true; |
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101 return true; |
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102 } |
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103 #else |
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104 static void SignalHandler(int signal) |
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105 { |
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106 if (signal == SIGHUP) |
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107 { |
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108 barrierEvent_ = ServerBarrierEvent_Reload; |
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109 } |
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110 |
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111 finish_ = true; |
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112 } |
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113 #endif |
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114 |
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115 |
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116 static ServerBarrierEvent ServerBarrierInternal(const bool* stopFlag) |
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117 { |
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118 #if defined(_WIN32) |
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119 SetConsoleCtrlHandler(ConsoleControlHandler, true); |
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120 #else |
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121 signal(SIGINT, SignalHandler); |
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122 signal(SIGQUIT, SignalHandler); |
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123 signal(SIGTERM, SignalHandler); |
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124 signal(SIGHUP, SignalHandler); |
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125 #endif |
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126 |
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127 // Active loop that awakens every 100ms |
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128 finish_ = false; |
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129 barrierEvent_ = ServerBarrierEvent_Stop; |
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130 while (!(*stopFlag || finish_)) |
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131 { |
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132 SystemToolbox::USleep(100 * 1000); |
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133 } |
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134 |
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135 #if defined(_WIN32) |
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136 SetConsoleCtrlHandler(ConsoleControlHandler, false); |
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137 #else |
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138 signal(SIGINT, NULL); |
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139 signal(SIGQUIT, NULL); |
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140 signal(SIGTERM, NULL); |
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141 signal(SIGHUP, NULL); |
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142 #endif |
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143 |
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144 return barrierEvent_; |
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145 } |
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146 |
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147 |
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148 ServerBarrierEvent SystemToolbox::ServerBarrier(const bool& stopFlag) |
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149 { |
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150 return ServerBarrierInternal(&stopFlag); |
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151 } |
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152 |
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153 |
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154 ServerBarrierEvent SystemToolbox::ServerBarrier() |
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155 { |
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156 const bool stopFlag = false; |
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157 return ServerBarrierInternal(&stopFlag); |
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158 } |
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159 |
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160 |
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161 void SystemToolbox::USleep(uint64_t microSeconds) |
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162 { |
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163 #if defined(_WIN32) |
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164 ::Sleep(static_cast<DWORD>(microSeconds / static_cast<uint64_t>(1000))); |
2364 | 165 #elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__native_client__) |
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166 usleep(microSeconds); |
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167 #else |
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168 #error Support your platform here |
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169 #endif |
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170 } |
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171 |
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172 |
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173 static std::streamsize GetStreamSize(std::istream& f) |
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174 { |
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175 // http://www.cplusplus.com/reference/iostream/istream/tellg/ |
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176 f.seekg(0, std::ios::end); |
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177 std::streamsize size = f.tellg(); |
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178 f.seekg(0, std::ios::beg); |
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179 |
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180 return size; |
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181 } |
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182 |
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183 |
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184 void SystemToolbox::ReadFile(std::string& content, |
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185 const std::string& path) |
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186 { |
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187 if (!IsRegularFile(path)) |
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188 { |
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189 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; |
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190 throw OrthancException(ErrorCode_RegularFileExpected); |
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191 } |
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192 |
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193 boost::filesystem::ifstream f; |
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194 f.open(path, std::ifstream::in | std::ifstream::binary); |
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195 if (!f.good()) |
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196 { |
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197 throw OrthancException(ErrorCode_InexistentFile); |
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198 } |
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199 |
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200 std::streamsize size = GetStreamSize(f); |
2332 | 201 content.resize(static_cast<size_t>(size)); |
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202 if (size != 0) |
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203 { |
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204 f.read(reinterpret_cast<char*>(&content[0]), size); |
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205 } |
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206 |
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207 f.close(); |
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208 } |
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209 |
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210 |
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211 bool SystemToolbox::ReadHeader(std::string& header, |
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212 const std::string& path, |
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213 size_t headerSize) |
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214 { |
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215 if (!IsRegularFile(path)) |
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216 { |
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217 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; |
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218 throw OrthancException(ErrorCode_RegularFileExpected); |
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219 } |
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220 |
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221 boost::filesystem::ifstream f; |
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222 f.open(path, std::ifstream::in | std::ifstream::binary); |
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223 if (!f.good()) |
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224 { |
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225 throw OrthancException(ErrorCode_InexistentFile); |
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226 } |
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227 |
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228 bool full = true; |
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229 |
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230 { |
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231 std::streamsize size = GetStreamSize(f); |
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232 if (size <= 0) |
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233 { |
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234 headerSize = 0; |
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235 full = false; |
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236 } |
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237 else if (static_cast<size_t>(size) < headerSize) |
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238 { |
2332 | 239 headerSize = static_cast<size_t>(size); // Truncate to the size of the file |
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240 full = false; |
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241 } |
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242 } |
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243 |
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244 header.resize(headerSize); |
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245 if (headerSize != 0) |
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246 { |
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247 f.read(reinterpret_cast<char*>(&header[0]), headerSize); |
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248 } |
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249 |
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250 f.close(); |
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251 |
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252 return full; |
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253 } |
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254 |
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255 |
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256 void SystemToolbox::WriteFile(const void* content, |
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257 size_t size, |
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258 const std::string& path) |
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259 { |
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260 boost::filesystem::ofstream f; |
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261 f.open(path, std::ofstream::out | std::ofstream::binary); |
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262 if (!f.good()) |
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263 { |
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264 throw OrthancException(ErrorCode_CannotWriteFile); |
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265 } |
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266 |
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267 if (size != 0) |
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268 { |
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269 f.write(reinterpret_cast<const char*>(content), size); |
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270 |
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271 if (!f.good()) |
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272 { |
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273 f.close(); |
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274 throw OrthancException(ErrorCode_FileStorageCannotWrite); |
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275 } |
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276 } |
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277 |
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278 f.close(); |
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279 } |
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280 |
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281 |
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282 void SystemToolbox::WriteFile(const std::string& content, |
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283 const std::string& path) |
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284 { |
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285 WriteFile(content.size() > 0 ? content.c_str() : NULL, |
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286 content.size(), path); |
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287 } |
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288 |
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289 |
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290 void SystemToolbox::RemoveFile(const std::string& path) |
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291 { |
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292 if (boost::filesystem::exists(path)) |
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293 { |
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294 if (IsRegularFile(path)) |
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295 { |
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296 boost::filesystem::remove(path); |
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297 } |
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298 else |
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299 { |
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300 throw OrthancException(ErrorCode_RegularFileExpected); |
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301 } |
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302 } |
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303 } |
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304 |
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305 |
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306 uint64_t SystemToolbox::GetFileSize(const std::string& path) |
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307 { |
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308 try |
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309 { |
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310 return static_cast<uint64_t>(boost::filesystem::file_size(path)); |
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311 } |
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312 catch (boost::filesystem::filesystem_error&) |
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313 { |
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314 throw OrthancException(ErrorCode_InexistentFile); |
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315 } |
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316 } |
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317 |
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318 |
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319 void SystemToolbox::MakeDirectory(const std::string& path) |
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320 { |
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321 if (boost::filesystem::exists(path)) |
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322 { |
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323 if (!boost::filesystem::is_directory(path)) |
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324 { |
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325 throw OrthancException(ErrorCode_DirectoryOverFile); |
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326 } |
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327 } |
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328 else |
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329 { |
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330 if (!boost::filesystem::create_directories(path)) |
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331 { |
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332 throw OrthancException(ErrorCode_MakeDirectory); |
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333 } |
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334 } |
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335 } |
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336 |
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337 |
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338 bool SystemToolbox::IsExistingFile(const std::string& path) |
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339 { |
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340 return boost::filesystem::exists(path); |
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341 } |
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342 |
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343 |
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344 #if defined(_WIN32) |
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345 static std::string GetPathToExecutableInternal() |
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346 { |
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347 // Yes, this is ugly, but there is no simple way to get the |
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348 // required buffer size, so we use a big constant |
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349 std::vector<char> buffer(32768); |
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350 /*int bytes =*/ GetModuleFileNameA(NULL, &buffer[0], static_cast<DWORD>(buffer.size() - 1)); |
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351 return std::string(&buffer[0]); |
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352 } |
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353 |
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354 #elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
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355 static std::string GetPathToExecutableInternal() |
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356 { |
2365 | 357 // NOTE: For FreeBSD, using KERN_PROC_PATHNAME might be a better alternative |
358 | |
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359 std::vector<char> buffer(PATH_MAX + 1); |
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360 ssize_t bytes = readlink("/proc/self/exe", &buffer[0], buffer.size() - 1); |
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361 if (bytes == 0) |
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362 { |
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363 throw OrthancException(ErrorCode_PathToExecutable); |
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364 } |
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365 |
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366 return std::string(&buffer[0]); |
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367 } |
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368 |
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369 #elif defined(__APPLE__) && defined(__MACH__) |
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370 static std::string GetPathToExecutableInternal() |
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371 { |
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372 char pathbuf[PATH_MAX + 1]; |
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373 unsigned int bufsize = static_cast<int>(sizeof(pathbuf)); |
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374 |
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375 _NSGetExecutablePath( pathbuf, &bufsize); |
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376 |
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377 return std::string(pathbuf); |
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378 } |
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379 |
2364 | 380 #elif defined(__OpenBSD__) |
381 static std::string GetPathToExecutableInternal() | |
382 { | |
2365 | 383 // This is an adapted version of the patch proposed in issue #64 |
384 // without an explicit call to "malloc()" to prevent memory leak | |
385 // https://bitbucket.org/sjodogne/orthanc/issues/64/add-openbsd-support | |
386 // https://stackoverflow.com/q/31494901/881731 | |
387 | |
388 const int mib[4] = { CTL_KERN, KERN_PROC_ARGS, getpid(), KERN_PROC_ARGV }; | |
389 | |
390 size_t len; | |
391 if (sysctl(mib, 4, NULL, &len, NULL, 0) == -1) | |
392 { | |
393 throw OrthancException(ErrorCode_PathToExecutable); | |
394 } | |
395 | |
396 std::string tmp; | |
397 tmp.resize(len); | |
398 | |
399 char** buffer = reinterpret_cast<char**>(&tmp[0]); | |
400 | |
401 if (sysctl(mib, 4, buffer, &len, NULL, 0) == -1) | |
402 { | |
403 throw OrthancException(ErrorCode_PathToExecutable); | |
404 } | |
405 else | |
406 { | |
407 return std::string(buffer[0]); | |
408 } | |
2364 | 409 } |
410 | |
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411 #else |
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412 #error Support your platform here |
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413 #endif |
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414 |
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415 |
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416 std::string SystemToolbox::GetPathToExecutable() |
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417 { |
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418 boost::filesystem::path p(GetPathToExecutableInternal()); |
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419 return boost::filesystem::absolute(p).string(); |
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420 } |
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421 |
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422 |
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423 std::string SystemToolbox::GetDirectoryOfExecutable() |
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424 { |
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425 boost::filesystem::path p(GetPathToExecutableInternal()); |
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426 return boost::filesystem::absolute(p.parent_path()).string(); |
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427 } |
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428 |
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429 |
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430 void SystemToolbox::ExecuteSystemCommand(const std::string& command, |
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431 const std::vector<std::string>& arguments) |
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432 { |
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433 // Convert the arguments as a C array |
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434 std::vector<char*> args(arguments.size() + 2); |
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435 |
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436 args.front() = const_cast<char*>(command.c_str()); |
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437 |
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438 for (size_t i = 0; i < arguments.size(); i++) |
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439 { |
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440 args[i + 1] = const_cast<char*>(arguments[i].c_str()); |
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441 } |
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442 |
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443 args.back() = NULL; |
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444 |
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445 int status; |
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446 |
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447 #if defined(_WIN32) |
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448 // http://msdn.microsoft.com/en-us/library/275khfab.aspx |
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449 status = static_cast<int>(_spawnvp(_P_OVERLAY, command.c_str(), &args[0])); |
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450 |
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451 #else |
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452 int pid = fork(); |
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453 |
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454 if (pid == -1) |
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455 { |
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456 // Error in fork() |
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457 #if ORTHANC_ENABLE_LOGGING == 1 |
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458 LOG(ERROR) << "Cannot fork a child process"; |
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459 #endif |
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460 |
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461 throw OrthancException(ErrorCode_SystemCommand); |
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462 } |
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463 else if (pid == 0) |
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464 { |
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465 // Execute the system command in the child process |
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466 execvp(command.c_str(), &args[0]); |
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467 |
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468 // We should never get here |
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469 _exit(1); |
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470 } |
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471 else |
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472 { |
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473 // Wait for the system command to exit |
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474 waitpid(pid, &status, 0); |
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475 } |
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476 #endif |
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477 |
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478 if (status != 0) |
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479 { |
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480 #if ORTHANC_ENABLE_LOGGING == 1 |
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481 LOG(ERROR) << "System command failed with status code " << status; |
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482 #endif |
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483 |
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484 throw OrthancException(ErrorCode_SystemCommand); |
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485 } |
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486 } |
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487 |
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488 |
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489 int SystemToolbox::GetProcessId() |
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490 { |
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491 #if defined(_WIN32) |
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492 return static_cast<int>(_getpid()); |
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493 #else |
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494 return static_cast<int>(getpid()); |
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495 #endif |
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496 } |
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497 |
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498 |
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499 bool SystemToolbox::IsRegularFile(const std::string& path) |
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500 { |
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501 namespace fs = boost::filesystem; |
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502 |
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503 try |
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504 { |
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505 if (fs::exists(path)) |
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506 { |
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507 fs::file_status status = fs::status(path); |
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508 return (status.type() == boost::filesystem::regular_file || |
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509 status.type() == boost::filesystem::reparse_file); // Fix BitBucket issue #11 |
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510 } |
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511 } |
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512 catch (fs::filesystem_error&) |
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513 { |
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514 } |
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515 |
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516 return false; |
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517 } |
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518 |
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519 |
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520 FILE* SystemToolbox::OpenFile(const std::string& path, |
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521 FileMode mode) |
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522 { |
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523 #if defined(_WIN32) |
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524 // TODO Deal with special characters by converting to the current locale |
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525 #endif |
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526 |
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527 const char* m; |
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528 switch (mode) |
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529 { |
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530 case FileMode_ReadBinary: |
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531 m = "rb"; |
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532 break; |
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533 |
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534 case FileMode_WriteBinary: |
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535 m = "wb"; |
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536 break; |
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537 |
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538 default: |
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539 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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540 } |
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541 |
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542 return fopen(path.c_str(), m); |
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543 } |
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544 |
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545 |
2172
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546 std::string SystemToolbox::GenerateUuid() |
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547 { |
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548 #ifdef WIN32 |
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549 UUID uuid; |
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550 UuidCreate ( &uuid ); |
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551 |
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552 unsigned char * str; |
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553 UuidToStringA ( &uuid, &str ); |
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554 |
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555 std::string s( ( char* ) str ); |
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556 |
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557 RpcStringFreeA ( &str ); |
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558 #else |
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559 uuid_t uuid; |
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560 uuid_generate_random ( uuid ); |
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561 char s[37]; |
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562 uuid_unparse ( uuid, s ); |
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563 #endif |
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564 return s; |
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565 } |
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566 |
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567 |
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568 #if BOOST_HAS_DATE_TIME == 1 |
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569 std::string SystemToolbox::GetNowIsoString() |
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570 { |
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571 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); |
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572 return boost::posix_time::to_iso_string(now); |
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573 } |
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574 |
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575 void SystemToolbox::GetNowDicom(std::string& date, |
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576 std::string& time) |
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577 { |
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578 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); |
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579 tm tm = boost::posix_time::to_tm(now); |
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580 |
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581 char s[32]; |
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582 sprintf(s, "%04d%02d%02d", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); |
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583 date.assign(s); |
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584 |
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585 // TODO milliseconds |
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586 sprintf(s, "%02d%02d%02d.%06d", tm.tm_hour, tm.tm_min, tm.tm_sec, 0); |
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587 time.assign(s); |
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588 } |
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589 #endif |
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590 } |