Mercurial > hg > orthanc

/**
 * Palantir - A Lightweight, RESTful DICOM Store
 * Copyright (C) 2012 Medical Physics Department, CHU 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.
 *
 * 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 "FilesystemHttpHandler.h"

#include "../PalantirException.h"

#include <boost/filesystem.hpp>


namespace Palantir
{
  struct FilesystemHttpHandler::PImpl
  {
    UriComponents baseUri_;
    boost::filesystem::path root_;
  };


  static void OutputDirectoryContent(HttpOutput& output,
                                     const UriComponents& uri,
                                     const boost::filesystem::path& p)
  {
    namespace fs = boost::filesystem;

    output.SendOkHeader("text/html");
    output.SendString("<html>");
    output.SendString("  <body>");
    output.SendString("    <h1>Subdirectories</h1>");
    output.SendString("    <ul>");

    if (uri.size() > 0)
    {
      std::string h = Toolbox::FlattenUri(uri) + "/..";
      output.SendString("<li><a href=\"" + h + "\">..</a></li>");
    }

    fs::directory_iterator end;
    for (fs::directory_iterator it(p) ; it != end; ++it)
    {
      std::string f = it->path().filename().string();
      std::string h = Toolbox::FlattenUri(uri) + "/" + f;
      if (fs::is_directory(it->status()))
        output.SendString("<li><a href=\"" + h + "\">" + f + "</a></li>");
    }

    output.SendString("    </ul>");
    output.SendString("    <h1>Files</h1>");
    output.SendString("    <ul>");

    for (fs::directory_iterator it(p) ; it != end; ++it)
    {
      std::string f = it->path().filename().string();
      std::string h = Toolbox::FlattenUri(uri) + "/" + f;
      if (fs::is_regular_file(it->status()))
        output.SendString("<li><a href=\"" + h + "\">" + f + "</a></li>");
    }

    output.SendString("    </ul>");
    output.SendString("  </body>");
    output.SendString("</html>");
  }


  FilesystemHttpHandler::FilesystemHttpHandler(const std::string& baseUri,
                                               const std::string& root) : pimpl_(new PImpl)
  {
    Toolbox::SplitUriComponents(pimpl_->baseUri_, baseUri);
    pimpl_->root_ = root;
    listDirectoryContent_ = false;

    namespace fs = boost::filesystem;
    if (!fs::exists(pimpl_->root_) ||
        !fs::is_directory(pimpl_->root_))
    {
      throw PalantirException("The path does not point to a directory");
    }
  }


  bool FilesystemHttpHandler::IsServedUri(const UriComponents& uri)
  {
    return Toolbox::IsChildUri(pimpl_->baseUri_, uri);
  }


  void FilesystemHttpHandler::Handle(
    HttpOutput& output,
    const std::string& method,
    const UriComponents& uri,
    const Arguments& headers,
    const Arguments& arguments,
    const std::string&)
  {
    if (method != "GET")
    {
      output.SendMethodNotAllowedError("GET");
      return;
    }

    namespace fs = boost::filesystem;

    fs::path p = pimpl_->root_;
    for (size_t i = pimpl_->baseUri_.size(); i < uri.size(); i++)
    {
      p /= uri[i];
    }

    if (fs::exists(p) && fs::is_regular_file(p))
    {
      output.AnswerFileAutodetectContentType(p.string());
    }
    else if (listDirectoryContent_ &&
             fs::exists(p) &&
             fs::is_directory(p))
    {
      OutputDirectoryContent(output, uri, p);
    }
    else
    {
      output.SendHeader(HttpStatus_404_NotFound);
    }
  }
}
author	jodogne
date	Fri, 20 Jul 2012 11:00:49 +0200
parents	3959d33612cc
children	9be852ad33d2