Mercurial > hg > orthanc-wsi
diff Framework/Orthanc/Plugins/Engine/SharedLibrary.cpp @ 1:dc730d11b101
orthanc dependencies
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 22 Oct 2016 21:50:15 +0200 |
parents | |
children | 533cbc4d520c |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Orthanc/Plugins/Engine/SharedLibrary.cpp Sat Oct 22 21:50:15 2016 +0200 @@ -0,0 +1,140 @@ +/** + * Orthanc - A Lightweight, RESTful DICOM Store + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * In addition, as a special exception, the copyright holders of this + * program give permission to link the code of its release with the + * OpenSSL project's "OpenSSL" library (or with modified versions of it + * that use the same license as the "OpenSSL" library), and distribute + * the linked executables. You must obey the GNU General Public License + * in all respects for all of the code used other than "OpenSSL". If you + * modify file(s) with this exception, you may extend this exception to + * your version of the file(s), but you are not obligated to do so. If + * you do not wish to do so, delete this exception statement from your + * version. If you delete this exception statement from all source files + * in the program, then also delete it here. + * + * 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "../../OrthancServer/PrecompiledHeadersServer.h" +#include "SharedLibrary.h" + +#if ORTHANC_PLUGINS_ENABLED != 1 +#error The plugin support is disabled +#endif + + +#include "../../Core/Logging.h" +#include "../../Core/Toolbox.h" + +#include <boost/filesystem.hpp> + +#if defined(_WIN32) +#include <windows.h> +#elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) +#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(); + throw OrthancException(ErrorCode_SharedLibrary); + } + +#elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) + handle_ = ::dlopen(path_.c_str(), RTLD_NOW); + 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__) + ::dlclose(handle_); +#else +#error Support your platform here +#endif + } + } + + + 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__) + 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) + { + LOG(ERROR) << "Shared library does not expose function \"" << name << "\""; + throw OrthancException(ErrorCode_SharedLibrary); + } + else + { + return result; + } + } + + + bool SharedLibrary::HasFunction(const std::string& name) + { + return GetFunctionInternal(name) != NULL; + } +}