153 lines
4.1 KiB
C++
153 lines
4.1 KiB
C++
/**
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* Orthanc - A Lightweight, RESTful DICOM Store
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* Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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* Department, University Hospital of Liege, Belgium
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* Copyright (C) 2017-2023 Osimis S.A., Belgium
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* Copyright (C) 2024-2025 Orthanc Team SRL, Belgium
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* Copyright (C) 2021-2025 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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*
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* This program is free software: you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program. If not, see
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* <http://www.gnu.org/licenses/>.
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**/
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#include "PrecompiledHeaders.h"
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#include "TemporaryFile.h"
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#include "OrthancException.h"
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#include "SystemToolbox.h"
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#include "Toolbox.h"
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#include <boost/filesystem.hpp>
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#include <boost/lexical_cast.hpp>
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namespace Orthanc
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{
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static std::string CreateTemporaryPath(const char* temporaryDirectory,
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const char* extension)
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{
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boost::filesystem::path dir;
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if (temporaryDirectory == NULL)
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{
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#if BOOST_HAS_FILESYSTEM_V3 == 1
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dir = boost::filesystem::temp_directory_path();
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#elif defined(__linux__)
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dir = "/tmp";
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#else
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# error Support your platform here
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#endif
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}
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else
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{
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dir = temporaryDirectory;
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}
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// We use UUID to create unique path to temporary files
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const std::string uuid = Toolbox::GenerateUuid();
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// New in Orthanc 1.5.8: Prefix the process ID to the name of the
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// temporary files, in order to locate orphan temporary files that
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// were left by instances of Orthanc that exited in non-clean way
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// https://groups.google.com/d/msg/orthanc-users/MSJX53bw6Lw/d3S3lRRLAwAJ
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std::string filename = "Orthanc-" + boost::lexical_cast<std::string>(SystemToolbox::GetProcessId()) + "-" + uuid;
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if (extension != NULL)
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{
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filename.append(extension);
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}
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dir /= filename;
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return dir.string();
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}
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TemporaryFile::TemporaryFile() :
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path_(CreateTemporaryPath(NULL, NULL))
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{
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}
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TemporaryFile::TemporaryFile(const std::string& temporaryDirectory,
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const std::string& extension) :
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path_(CreateTemporaryPath(temporaryDirectory.c_str(), extension.c_str()))
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{
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}
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TemporaryFile::~TemporaryFile()
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{
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boost::filesystem::remove(path_);
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}
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const std::string &TemporaryFile::GetPath() const
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{
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return path_;
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}
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void TemporaryFile::Write(const std::string& content)
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{
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try
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{
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SystemToolbox::WriteFile(content, path_);
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}
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catch (OrthancException& e)
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{
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throw OrthancException(e.GetErrorCode(),
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"Can't create temporary file \"" + path_ +
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"\" with " + boost::lexical_cast<std::string>(content.size()) +
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" bytes: Check you have write access to the "
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"temporary directory and that it is not full");
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}
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}
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void TemporaryFile::Read(std::string& content) const
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{
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try
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{
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SystemToolbox::ReadFile(content, path_);
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}
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catch (OrthancException& e)
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{
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throw OrthancException(e.GetErrorCode(),
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"Can't read temporary file \"" + path_ +
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"\": Another process has corrupted the temporary directory");
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}
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}
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void TemporaryFile::Touch()
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{
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std::string empty;
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Write(empty);
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}
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uint64_t TemporaryFile::GetFileSize() const
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{
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return SystemToolbox::GetFileSize(path_);
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}
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void TemporaryFile::ReadRange(std::string& content,
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uint64_t start,
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uint64_t end,
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bool throwIfOverflow) const
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{
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SystemToolbox::ReadFileRange(content, path_, start, end, throwIfOverflow);
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}
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}
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