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1 /**
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2 * Palantir - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20
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21 #include "FilesystemHttpHandler.h"
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22
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23 #include "../PalantirException.h"
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24
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25 #include <boost/filesystem.hpp>
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26
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27
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28 namespace Palantir
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29 {
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30 struct FilesystemHttpHandler::PImpl
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31 {
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32 UriComponents baseUri_;
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33 boost::filesystem::path root_;
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34 };
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35
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36
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37
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38 static void OutputDirectoryContent(HttpOutput& output,
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39 const UriComponents& uri,
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40 const boost::filesystem::path& p)
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41 {
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42 namespace fs = boost::filesystem;
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43
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44 output.SendOkHeader("text/html");
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45 output.SendString("<html>");
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46 output.SendString(" <body>");
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47 output.SendString(" <h1>Subdirectories</h1>");
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48 output.SendString(" <ul>");
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49
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50 if (uri.size() > 0)
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51 {
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52 std::string h = Toolbox::FlattenUri(uri) + "/..";
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53 output.SendString("<li><a href=\"" + h + "\">..</a></li>");
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54 }
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55
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56 fs::directory_iterator end;
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57 for (fs::directory_iterator it(p) ; it != end; ++it)
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58 {
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59 std::string f = it->path().filename().string();
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60 std::string h = Toolbox::FlattenUri(uri) + "/" + f;
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61 if (fs::is_directory(it->status()))
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62 output.SendString("<li><a href=\"" + h + "\">" + f + "</a></li>");
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63 }
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64
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65 output.SendString(" </ul>");
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66 output.SendString(" <h1>Files</h1>");
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67 output.SendString(" <ul>");
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68
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69 for (fs::directory_iterator it(p) ; it != end; ++it)
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70 {
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71 std::string f = it->path().filename().string();
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72 std::string h = Toolbox::FlattenUri(uri) + "/" + f;
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73 if (fs::is_regular_file(it->status()))
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74 output.SendString("<li><a href=\"" + h + "\">" + f + "</a></li>");
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75 }
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76
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77 output.SendString(" </ul>");
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78 output.SendString(" </body>");
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79 output.SendString("</html>");
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80 }
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81
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82
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83 FilesystemHttpHandler::FilesystemHttpHandler(const std::string& baseUri,
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84 const std::string& root) : pimpl_(new PImpl)
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85 {
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86 Toolbox::SplitUriComponents(pimpl_->baseUri_, baseUri);
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87 pimpl_->root_ = root;
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88 listDirectoryContent_ = false;
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89
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90 namespace fs = boost::filesystem;
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91 if (!fs::exists(pimpl_->root_) ||
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92 !fs::is_directory(pimpl_->root_))
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93 {
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94 throw PalantirException("The path does not point to a directory");
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95 }
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96 }
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97
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98
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99 bool FilesystemHttpHandler::IsServedUri(const UriComponents& uri)
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100 {
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101 return Toolbox::IsChildUri(pimpl_->baseUri_, uri);
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102 }
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103
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104
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105 void FilesystemHttpHandler::Handle(
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106 HttpOutput& output,
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107 const std::string& method,
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108 const UriComponents& uri,
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109 const Arguments& headers,
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110 const Arguments& arguments,
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111 const std::string&)
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112 {
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113 if (method != "GET")
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114 {
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115 output.SendMethodNotAllowedError("GET");
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116 return;
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117 }
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118
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119 namespace fs = boost::filesystem;
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120
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121 fs::path p = pimpl_->root_;
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122 for (size_t i = pimpl_->baseUri_.size(); i < uri.size(); i++)
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123 {
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124 p /= uri[i];
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125 }
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126
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127 if (fs::exists(p) && fs::is_regular_file(p))
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128 {
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129 output.AnswerFileAutodetectContentType(p.string());
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130 }
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131 else if (listDirectoryContent_ &&
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132 fs::exists(p) &&
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133 fs::is_directory(p))
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134 {
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135 OutputDirectoryContent(output, uri, p);
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136 }
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137 else
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138 {
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139 output.SendHeader(HttpStatus_404_NotFound);
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140 }
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141 }
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142 }
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