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44
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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 "SystemToolbox.h"
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35
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36
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37 #if BOOST_HAS_DATE_TIME == 1
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54
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38 # include <boost/date_time/posix_time/posix_time.hpp>
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44
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39 #endif
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40
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41
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42 #if defined(_WIN32)
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54
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43 # include <windows.h>
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44 # include <process.h> // For "_spawnvp()" and "_getpid()"
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44
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45 #else
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54
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46 # include <unistd.h> // For "execvp()"
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47 # include <sys/wait.h> // For "waitpid()"
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44
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48 #endif
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49
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54
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50
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44
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51 #if defined(__APPLE__) && defined(__MACH__)
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54
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52 # include <mach-o/dyld.h> /* _NSGetExecutablePath */
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53 # include <limits.h> /* PATH_MAX */
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44
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54 #endif
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55
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54
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56
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44
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57 #if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__)
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54
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58 # include <limits.h> /* PATH_MAX */
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59 # include <signal.h>
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60 # include <unistd.h>
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44
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61 #endif
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62
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63
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54
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64 // Inclusions for UUID
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65 // http://stackoverflow.com/a/1626302
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66
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67 extern "C"
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68 {
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69 #ifdef WIN32
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70 # include <rpc.h>
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71 #else
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72 # include <uuid/uuid.h>
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73 #endif
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74 }
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75
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76
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44
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77 #include "Logging.h"
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78 #include "OrthancException.h"
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79 #include "Toolbox.h"
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80
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81 #include <boost/filesystem.hpp>
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82 #include <boost/filesystem/fstream.hpp>
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83
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84
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85 namespace Orthanc
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86 {
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87 static bool finish_;
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88 static ServerBarrierEvent barrierEvent_;
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89
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90 #if defined(_WIN32)
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91 static BOOL WINAPI ConsoleControlHandler(DWORD dwCtrlType)
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92 {
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93 // http://msdn.microsoft.com/en-us/library/ms683242(v=vs.85).aspx
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94 finish_ = true;
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95 return true;
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96 }
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97 #else
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98 static void SignalHandler(int signal)
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99 {
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100 if (signal == SIGHUP)
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101 {
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102 barrierEvent_ = ServerBarrierEvent_Reload;
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103 }
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104
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105 finish_ = true;
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106 }
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107 #endif
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108
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109
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110 static ServerBarrierEvent ServerBarrierInternal(const bool* stopFlag)
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111 {
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112 #if defined(_WIN32)
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113 SetConsoleCtrlHandler(ConsoleControlHandler, true);
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114 #else
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115 signal(SIGINT, SignalHandler);
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116 signal(SIGQUIT, SignalHandler);
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117 signal(SIGTERM, SignalHandler);
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118 signal(SIGHUP, SignalHandler);
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119 #endif
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120
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121 // Active loop that awakens every 100ms
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122 finish_ = false;
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123 barrierEvent_ = ServerBarrierEvent_Stop;
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124 while (!(*stopFlag || finish_))
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125 {
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126 Toolbox::USleep(100 * 1000);
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127 }
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128
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129 #if defined(_WIN32)
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130 SetConsoleCtrlHandler(ConsoleControlHandler, false);
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131 #else
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132 signal(SIGINT, NULL);
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133 signal(SIGQUIT, NULL);
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134 signal(SIGTERM, NULL);
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135 signal(SIGHUP, NULL);
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136 #endif
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137
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138 return barrierEvent_;
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139 }
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140
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141
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142 ServerBarrierEvent SystemToolbox::ServerBarrier(const bool& stopFlag)
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143 {
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144 return ServerBarrierInternal(&stopFlag);
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145 }
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146
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147
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148 ServerBarrierEvent SystemToolbox::ServerBarrier()
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149 {
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150 const bool stopFlag = false;
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151 return ServerBarrierInternal(&stopFlag);
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152 }
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153
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154
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155 static std::streamsize GetStreamSize(std::istream& f)
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156 {
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157 // http://www.cplusplus.com/reference/iostream/istream/tellg/
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158 f.seekg(0, std::ios::end);
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159 std::streamsize size = f.tellg();
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160 f.seekg(0, std::ios::beg);
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161
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162 return size;
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163 }
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164
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165
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166 void SystemToolbox::ReadFile(std::string& content,
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167 const std::string& path)
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168 {
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169 if (!IsRegularFile(path))
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170 {
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171 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path;
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172 throw OrthancException(ErrorCode_RegularFileExpected);
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173 }
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174
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175 boost::filesystem::ifstream f;
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176 f.open(path, std::ifstream::in | std::ifstream::binary);
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177 if (!f.good())
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178 {
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179 throw OrthancException(ErrorCode_InexistentFile);
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180 }
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181
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182 std::streamsize size = GetStreamSize(f);
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183 content.resize(size);
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184 if (size != 0)
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185 {
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186 f.read(reinterpret_cast<char*>(&content[0]), size);
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187 }
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188
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189 f.close();
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190 }
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191
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192
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193 bool SystemToolbox::ReadHeader(std::string& header,
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194 const std::string& path,
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195 size_t headerSize)
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196 {
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197 if (!IsRegularFile(path))
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198 {
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199 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path;
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200 throw OrthancException(ErrorCode_RegularFileExpected);
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201 }
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202
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203 boost::filesystem::ifstream f;
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204 f.open(path, std::ifstream::in | std::ifstream::binary);
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205 if (!f.good())
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206 {
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207 throw OrthancException(ErrorCode_InexistentFile);
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208 }
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209
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210 bool full = true;
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211
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212 {
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213 std::streamsize size = GetStreamSize(f);
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214 if (size <= 0)
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215 {
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216 headerSize = 0;
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217 full = false;
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218 }
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219 else if (static_cast<size_t>(size) < headerSize)
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220 {
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221 headerSize = size; // Truncate to the size of the file
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222 full = false;
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223 }
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224 }
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225
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226 header.resize(headerSize);
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227 if (headerSize != 0)
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228 {
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229 f.read(reinterpret_cast<char*>(&header[0]), headerSize);
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230 }
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231
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232 f.close();
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233
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234 return full;
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235 }
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236
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237
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238 void SystemToolbox::WriteFile(const void* content,
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239 size_t size,
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240 const std::string& path)
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241 {
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242 boost::filesystem::ofstream f;
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243 f.open(path, std::ofstream::out | std::ofstream::binary);
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244 if (!f.good())
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245 {
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246 throw OrthancException(ErrorCode_CannotWriteFile);
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247 }
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248
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249 if (size != 0)
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250 {
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251 f.write(reinterpret_cast<const char*>(content), size);
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252
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253 if (!f.good())
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254 {
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255 f.close();
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256 throw OrthancException(ErrorCode_FileStorageCannotWrite);
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257 }
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258 }
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259
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260 f.close();
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261 }
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262
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263
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264 void SystemToolbox::WriteFile(const std::string& content,
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265 const std::string& path)
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266 {
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267 WriteFile(content.size() > 0 ? content.c_str() : NULL,
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268 content.size(), path);
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269 }
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270
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271
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272 void SystemToolbox::RemoveFile(const std::string& path)
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273 {
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274 if (boost::filesystem::exists(path))
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275 {
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276 if (IsRegularFile(path))
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277 {
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278 boost::filesystem::remove(path);
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279 }
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280 else
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281 {
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282 throw OrthancException(ErrorCode_RegularFileExpected);
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283 }
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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 uint64_t SystemToolbox::GetFileSize(const std::string& path)
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289 {
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290 try
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291 {
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292 return static_cast<uint64_t>(boost::filesystem::file_size(path));
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293 }
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294 catch (boost::filesystem::filesystem_error&)
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295 {
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296 throw OrthancException(ErrorCode_InexistentFile);
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297 }
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298 }
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299
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300
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301 void SystemToolbox::MakeDirectory(const std::string& path)
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302 {
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303 if (boost::filesystem::exists(path))
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304 {
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305 if (!boost::filesystem::is_directory(path))
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306 {
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307 throw OrthancException(ErrorCode_DirectoryOverFile);
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308 }
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309 }
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310 else
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311 {
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312 if (!boost::filesystem::create_directories(path))
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313 {
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314 throw OrthancException(ErrorCode_MakeDirectory);
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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
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320 bool SystemToolbox::IsExistingFile(const std::string& path)
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321 {
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322 return boost::filesystem::exists(path);
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323 }
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324
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325
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326 #if defined(_WIN32)
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327 static std::string GetPathToExecutableInternal()
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328 {
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329 // Yes, this is ugly, but there is no simple way to get the
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330 // required buffer size, so we use a big constant
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331 std::vector<char> buffer(32768);
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332 /*int bytes =*/ GetModuleFileNameA(NULL, &buffer[0], static_cast<DWORD>(buffer.size() - 1));
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333 return std::string(&buffer[0]);
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334 }
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335
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336 #elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__)
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337 static std::string GetPathToExecutableInternal()
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338 {
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339 std::vector<char> buffer(PATH_MAX + 1);
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340 ssize_t bytes = readlink("/proc/self/exe", &buffer[0], buffer.size() - 1);
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341 if (bytes == 0)
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342 {
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343 throw OrthancException(ErrorCode_PathToExecutable);
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344 }
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345
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346 return std::string(&buffer[0]);
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347 }
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348
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349 #elif defined(__APPLE__) && defined(__MACH__)
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350 static std::string GetPathToExecutableInternal()
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351 {
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352 char pathbuf[PATH_MAX + 1];
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353 unsigned int bufsize = static_cast<int>(sizeof(pathbuf));
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354
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355 _NSGetExecutablePath( pathbuf, &bufsize);
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356
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357 return std::string(pathbuf);
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358 }
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359
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360 #else
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361 #error Support your platform here
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362 #endif
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363
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364
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365 std::string SystemToolbox::GetPathToExecutable()
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366 {
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367 boost::filesystem::path p(GetPathToExecutableInternal());
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368 return boost::filesystem::absolute(p).string();
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369 }
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370
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371
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372 std::string SystemToolbox::GetDirectoryOfExecutable()
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373 {
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374 boost::filesystem::path p(GetPathToExecutableInternal());
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375 return boost::filesystem::absolute(p.parent_path()).string();
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376 }
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377
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378
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379 void SystemToolbox::ExecuteSystemCommand(const std::string& command,
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380 const std::vector<std::string>& arguments)
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381 {
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382 // Convert the arguments as a C array
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383 std::vector<char*> args(arguments.size() + 2);
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384
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385 args.front() = const_cast<char*>(command.c_str());
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386
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387 for (size_t i = 0; i < arguments.size(); i++)
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388 {
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389 args[i + 1] = const_cast<char*>(arguments[i].c_str());
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390 }
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391
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392 args.back() = NULL;
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393
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394 int status;
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395
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396 #if defined(_WIN32)
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397 // http://msdn.microsoft.com/en-us/library/275khfab.aspx
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398 status = static_cast<int>(_spawnvp(_P_OVERLAY, command.c_str(), &args[0]));
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399
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400 #else
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401 int pid = fork();
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402
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403 if (pid == -1)
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404 {
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405 // Error in fork()
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406 #if ORTHANC_ENABLE_LOGGING == 1
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407 LOG(ERROR) << "Cannot fork a child process";
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408 #endif
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409
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410 throw OrthancException(ErrorCode_SystemCommand);
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411 }
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412 else if (pid == 0)
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413 {
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414 // Execute the system command in the child process
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415 execvp(command.c_str(), &args[0]);
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416
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417 // We should never get here
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418 _exit(1);
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419 }
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420 else
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421 {
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422 // Wait for the system command to exit
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423 waitpid(pid, &status, 0);
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424 }
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425 #endif
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426
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427 if (status != 0)
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428 {
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429 #if ORTHANC_ENABLE_LOGGING == 1
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430 LOG(ERROR) << "System command failed with status code " << status;
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431 #endif
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432
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433 throw OrthancException(ErrorCode_SystemCommand);
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434 }
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435 }
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436
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437
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438 int SystemToolbox::GetProcessId()
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439 {
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440 #if defined(_WIN32)
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441 return static_cast<int>(_getpid());
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442 #else
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443 return static_cast<int>(getpid());
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444 #endif
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445 }
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446
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447
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448 bool SystemToolbox::IsRegularFile(const std::string& path)
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449 {
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450 namespace fs = boost::filesystem;
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451
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452 try
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453 {
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454 if (fs::exists(path))
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455 {
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456 fs::file_status status = fs::status(path);
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457 return (status.type() == boost::filesystem::regular_file ||
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458 status.type() == boost::filesystem::reparse_file); // Fix BitBucket issue #11
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459 }
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460 }
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461 catch (fs::filesystem_error&)
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462 {
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463 }
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464
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465 return false;
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466 }
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467
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468
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469 FILE* SystemToolbox::OpenFile(const std::string& path,
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470 FileMode mode)
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471 {
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472 #if defined(_WIN32)
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473 // TODO Deal with special characters by converting to the current locale
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474 #endif
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475
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476 const char* m;
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477 switch (mode)
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478 {
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479 case FileMode_ReadBinary:
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480 m = "rb";
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481 break;
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482
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483 case FileMode_WriteBinary:
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|
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484 m = "wb";
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|
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485 break;
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486
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487 default:
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488 throw OrthancException(ErrorCode_ParameterOutOfRange);
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489 }
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490
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491 return fopen(path.c_str(), m);
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492 }
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493
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494
|
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54
|
495 std::string SystemToolbox::GenerateUuid()
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496 {
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497 #ifdef WIN32
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498 UUID uuid;
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|
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499 UuidCreate ( &uuid );
|
|
|
500
|
|
|
501 unsigned char * str;
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|
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502 UuidToStringA ( &uuid, &str );
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|
|
503
|
|
|
504 std::string s( ( char* ) str );
|
|
|
505
|
|
|
506 RpcStringFreeA ( &str );
|
|
|
507 #else
|
|
|
508 uuid_t uuid;
|
|
|
509 uuid_generate_random ( uuid );
|
|
|
510 char s[37];
|
|
|
511 uuid_unparse ( uuid, s );
|
|
|
512 #endif
|
|
|
513 return s;
|
|
|
514 }
|
|
|
515
|
|
|
516
|
|
44
|
517 #if BOOST_HAS_DATE_TIME == 1
|
|
|
518 std::string SystemToolbox::GetNowIsoString()
|
|
|
519 {
|
|
|
520 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time();
|
|
|
521 return boost::posix_time::to_iso_string(now);
|
|
|
522 }
|
|
|
523
|
|
|
524 void SystemToolbox::GetNowDicom(std::string& date,
|
|
|
525 std::string& time)
|
|
|
526 {
|
|
|
527 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time();
|
|
|
528 tm tm = boost::posix_time::to_tm(now);
|
|
|
529
|
|
|
530 char s[32];
|
|
|
531 sprintf(s, "%04d%02d%02d", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
|
|
|
532 date.assign(s);
|
|
|
533
|
|
|
534 // TODO milliseconds
|
|
|
535 sprintf(s, "%02d%02d%02d.%06d", tm.tm_hour, tm.tm_min, tm.tm_sec, 0);
|
|
|
536 time.assign(s);
|
|
|
537 }
|
|
|
538 #endif
|
|
|
539 }
|
