Mercurial > hg > orthanc
annotate OrthancFramework/Sources/SharedLibrary.cpp @ 4528:93a51d228d80
fix segmentation fault during anonymization on big-endian architectures
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 24 Feb 2021 15:07:54 +0100 |
parents | d9473bd5ed43 |
children | 7053502fbf97 |
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 * Copyright (C) 2017-2021 Osimis S.A., Belgium |
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6 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU Lesser General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
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11 * |
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12 * This program is distributed in the hope that it will be useful, but |
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 * Lesser General Public License for more details. |
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16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
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20 **/ |
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21 |
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22 |
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23 #include "PrecompiledHeaders.h" |
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24 #include "SharedLibrary.h" |
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25 |
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26 #include "Logging.h" |
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27 #include "OrthancException.h" |
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28 |
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29 #include <boost/filesystem.hpp> |
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30 |
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31 #if defined(_WIN32) |
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32 #include <windows.h> |
2364 | 33 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) |
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34 #include <dlfcn.h> |
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35 #else |
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36 #error Support your platform here |
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37 #endif |
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38 |
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39 namespace Orthanc |
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40 { |
1631 | 41 SharedLibrary::SharedLibrary(const std::string& path) : |
42 path_(path), | |
43 handle_(NULL) | |
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44 { |
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45 #if defined(_WIN32) |
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46 handle_ = ::LoadLibraryA(path_.c_str()); |
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47 if (handle_ == NULL) |
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48 { |
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49 LOG(ERROR) << "LoadLibrary(" << path_ << ") failed: Error " << ::GetLastError(); |
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50 |
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51 if (::GetLastError() == ERROR_BAD_EXE_FORMAT && |
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52 sizeof(void*) == 4) |
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53 { |
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54 throw OrthancException(ErrorCode_SharedLibrary, |
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55 "You are most probably trying to load a 64bit plugin into a 32bit version of Orthanc"); |
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56 } |
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57 else if (::GetLastError() == ERROR_BAD_EXE_FORMAT && |
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58 sizeof(void*) == 8) |
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59 { |
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60 throw OrthancException(ErrorCode_SharedLibrary, |
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61 "You are most probably trying to load a 32bit plugin into a 64bit version of Orthanc"); |
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62 } |
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63 else |
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64 { |
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65 throw OrthancException(ErrorCode_SharedLibrary); |
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66 } |
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67 } |
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68 |
2364 | 69 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) |
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70 |
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71 /** |
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72 * "RTLD_LOCAL" is the default, and is only present to be |
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73 * explicit. "RTLD_DEEPBIND" was added in Orthanc 1.6.0, in order |
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74 * to avoid crashes while loading plugins from the LSB binaries of |
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75 * the Orthanc core. |
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76 * |
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77 * BUT this had no effect, and this results in a crash if loading |
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78 * the Python 2.7 plugin => We disabled it again in Orthanc 1.6.1. |
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79 **/ |
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80 |
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81 #if 0 // && defined(RTLD_DEEPBIND) // This is a GNU extension |
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82 // Disabled in Orthanc 1.6.1 |
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83 handle_ = ::dlopen(path_.c_str(), RTLD_NOW | RTLD_LOCAL | RTLD_DEEPBIND); |
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84 #else |
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85 handle_ = ::dlopen(path_.c_str(), RTLD_NOW | RTLD_LOCAL); |
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86 #endif |
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87 |
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88 if (handle_ == NULL) |
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89 { |
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90 std::string explanation; |
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91 const char *tmp = ::dlerror(); |
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92 if (tmp) |
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93 { |
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94 explanation = ": Error " + std::string(tmp); |
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95 } |
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96 |
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97 LOG(ERROR) << "dlopen(" << path_ << ") failed" << explanation; |
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98 throw OrthancException(ErrorCode_SharedLibrary); |
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99 } |
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100 |
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101 #else |
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102 #error Support your platform here |
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103 #endif |
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104 } |
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105 |
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106 SharedLibrary::~SharedLibrary() |
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107 { |
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108 if (handle_) |
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109 { |
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110 #if defined(_WIN32) |
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111 ::FreeLibrary((HMODULE)handle_); |
2364 | 112 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) |
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113 ::dlclose(handle_); |
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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 |
4300 | 121 const std::string &SharedLibrary::GetPath() const |
122 { | |
123 return path_; | |
124 } | |
125 | |
126 | |
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127 SharedLibrary::FunctionPointer SharedLibrary::GetFunctionInternal(const std::string& name) |
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128 { |
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129 if (!handle_) |
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130 { |
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131 throw OrthancException(ErrorCode_InternalError); |
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132 } |
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133 |
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134 #if defined(_WIN32) |
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135 return ::GetProcAddress((HMODULE)handle_, name.c_str()); |
2364 | 136 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) |
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137 return ::dlsym(handle_, name.c_str()); |
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138 #else |
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139 #error Support your platform here |
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140 #endif |
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141 } |
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142 |
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143 |
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144 SharedLibrary::FunctionPointer SharedLibrary::GetFunction(const std::string& name) |
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145 { |
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146 SharedLibrary::FunctionPointer result = GetFunctionInternal(name); |
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147 |
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148 if (result == NULL) |
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149 { |
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150 throw OrthancException( |
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151 ErrorCode_SharedLibrary, |
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152 "Shared library does not expose function \"" + name + "\""); |
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153 } |
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154 else |
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155 { |
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156 return result; |
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157 } |
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158 } |
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159 |
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160 |
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161 bool SharedLibrary::HasFunction(const std::string& name) |
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162 { |
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163 return GetFunctionInternal(name) != NULL; |
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164 } |
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165 } |