Mercurial > hg > orthanc
annotate Plugins/Engine/SharedLibrary.cpp @ 2009:e2dd40abce72
catching SIGHUP signal
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 09 Jun 2016 17:25:34 +0200 |
parents | 325772dadcd6 |
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rev | line source |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
1900 | 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 |
1625 | 33 #include "../../OrthancServer/PrecompiledHeadersServer.h" |
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34 #include "SharedLibrary.h" |
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35 |
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36 #if ORTHANC_PLUGINS_ENABLED != 1 |
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37 #error The plugin support is disabled |
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38 #endif |
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39 |
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40 |
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41 #include "../../Core/Logging.h" |
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42 #include "../../Core/Toolbox.h" |
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43 |
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44 #include <boost/filesystem.hpp> |
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45 |
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46 #if defined(_WIN32) |
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47 #include <windows.h> |
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48 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
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49 #include <dlfcn.h> |
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50 #else |
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51 #error Support your platform here |
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52 #endif |
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53 |
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54 namespace Orthanc |
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55 { |
1631 | 56 SharedLibrary::SharedLibrary(const std::string& path) : |
57 path_(path), | |
58 handle_(NULL) | |
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59 { |
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60 #if defined(_WIN32) |
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61 handle_ = ::LoadLibraryA(path_.c_str()); |
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62 if (handle_ == NULL) |
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63 { |
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64 LOG(ERROR) << "LoadLibrary(" << path_ << ") failed: Error " << ::GetLastError(); |
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65 throw OrthancException(ErrorCode_SharedLibrary); |
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66 } |
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67 |
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68 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
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69 handle_ = ::dlopen(path_.c_str(), RTLD_NOW); |
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70 if (handle_ == NULL) |
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71 { |
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72 std::string explanation; |
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73 const char *tmp = ::dlerror(); |
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74 if (tmp) |
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75 { |
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76 explanation = ": Error " + std::string(tmp); |
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77 } |
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78 |
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79 LOG(ERROR) << "dlopen(" << path_ << ") failed" << explanation; |
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80 throw OrthancException(ErrorCode_SharedLibrary); |
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81 } |
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82 |
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83 #else |
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84 #error Support your platform here |
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85 #endif |
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86 } |
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87 |
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88 SharedLibrary::~SharedLibrary() |
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89 { |
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90 if (handle_) |
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91 { |
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92 #if defined(_WIN32) |
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93 ::FreeLibrary((HMODULE)handle_); |
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94 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
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95 ::dlclose(handle_); |
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96 #else |
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97 #error Support your platform here |
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98 #endif |
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99 } |
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100 } |
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101 |
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102 |
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103 SharedLibrary::FunctionPointer SharedLibrary::GetFunctionInternal(const std::string& name) |
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104 { |
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105 if (!handle_) |
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106 { |
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107 throw OrthancException(ErrorCode_InternalError); |
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108 } |
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109 |
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110 #if defined(_WIN32) |
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111 return ::GetProcAddress((HMODULE)handle_, name.c_str()); |
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112 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) |
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113 return ::dlsym(handle_, name.c_str()); |
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114 #else |
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115 #error Support your platform here |
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116 #endif |
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117 } |
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118 |
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119 |
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120 SharedLibrary::FunctionPointer SharedLibrary::GetFunction(const std::string& name) |
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121 { |
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122 SharedLibrary::FunctionPointer result = GetFunctionInternal(name); |
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123 |
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124 if (result == NULL) |
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125 { |
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126 LOG(ERROR) << "Shared library does not expose function \"" << name << "\""; |
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127 throw OrthancException(ErrorCode_SharedLibrary); |
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128 } |
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129 else |
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130 { |
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131 return result; |
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132 } |
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133 } |
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134 |
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135 |
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136 bool SharedLibrary::HasFunction(const std::string& name) |
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137 { |
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138 return GetFunctionInternal(name) != NULL; |
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139 } |
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140 } |