Mercurial > hg > orthanc
view OrthancFramework/Sources/SharedLibrary.cpp @ 5930:6530bc38782f
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 16 Dec 2024 17:04:35 +0100 |
parents | f7adfb22e20e |
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/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2023 Osimis S.A., Belgium * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program. If not, see * <http://www.gnu.org/licenses/>. **/ #include "PrecompiledHeaders.h" #include "SharedLibrary.h" #include "Logging.h" #include "OrthancException.h" #include <boost/filesystem.hpp> #if defined(_WIN32) #include <windows.h> #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) #include <dlfcn.h> #else #error Support your platform here #endif namespace Orthanc { SharedLibrary::SharedLibrary(const std::string& path) : path_(path), handle_(NULL) { #if defined(_WIN32) handle_ = ::LoadLibraryA(path_.c_str()); if (handle_ == NULL) { LOG(ERROR) << "LoadLibrary(" << path_ << ") failed: Error " << ::GetLastError(); if (::GetLastError() == ERROR_BAD_EXE_FORMAT && sizeof(void*) == 4) { throw OrthancException(ErrorCode_SharedLibrary, "You are most probably trying to load a 64bit plugin into a 32bit version of Orthanc"); } else if (::GetLastError() == ERROR_BAD_EXE_FORMAT && sizeof(void*) == 8) { throw OrthancException(ErrorCode_SharedLibrary, "You are most probably trying to load a 32bit plugin into a 64bit version of Orthanc"); } else { throw OrthancException(ErrorCode_SharedLibrary); } } #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) /** * "RTLD_LOCAL" is the default, and is only present to be * explicit. "RTLD_DEEPBIND" was added in Orthanc 1.6.0, in order * to avoid crashes while loading plugins from the LSB binaries of * the Orthanc core. * * BUT this had no effect, and this results in a crash if loading * the Python 2.7 plugin => We disabled it again in Orthanc 1.6.1. **/ #if 0 // && defined(RTLD_DEEPBIND) // This is a GNU extension // Disabled in Orthanc 1.6.1 handle_ = ::dlopen(path_.c_str(), RTLD_NOW | RTLD_LOCAL | RTLD_DEEPBIND); #else handle_ = ::dlopen(path_.c_str(), RTLD_NOW | RTLD_LOCAL); #endif if (handle_ == NULL) { std::string explanation; const char *tmp = ::dlerror(); if (tmp) { explanation = ": Error " + std::string(tmp); } LOG(ERROR) << "dlopen(" << path_ << ") failed" << explanation; throw OrthancException(ErrorCode_SharedLibrary); } #else #error Support your platform here #endif } SharedLibrary::~SharedLibrary() { if (handle_) { #if defined(_WIN32) ::FreeLibrary((HMODULE)handle_); #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) ::dlclose(handle_); #else #error Support your platform here #endif } } const std::string &SharedLibrary::GetPath() const { return path_; } SharedLibrary::FunctionPointer SharedLibrary::GetFunctionInternal(const std::string& name) { if (!handle_) { throw OrthancException(ErrorCode_InternalError); } #if defined(_WIN32) return ::GetProcAddress((HMODULE)handle_, name.c_str()); #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__OpenBSD__) return ::dlsym(handle_, name.c_str()); #else #error Support your platform here #endif } SharedLibrary::FunctionPointer SharedLibrary::GetFunction(const std::string& name) { SharedLibrary::FunctionPointer result = GetFunctionInternal(name); if (result == NULL) { throw OrthancException( ErrorCode_SharedLibrary, "Shared library does not expose function \"" + name + "\""); } else { return result; } } bool SharedLibrary::HasFunction(const std::string& name) { return GetFunctionInternal(name) != NULL; } }