Mercurial > hg > orthanc

annotate OrthancServer/Plugins/Samples/ServeFolders/Plugin.cpp @ 5583:74cc31c8db2b find-refactoring

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removed FindResponse::Item::responseContent_
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 27 Apr 2024 22:15:37 +0200
parents f0dc99bc811c
children f7adfb22e20e
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
1900
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2024 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU General Public License as
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10 * published by the Free Software Foundation, either version 3 of the
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11 * License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU General Public License
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 **/
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23 #define SERVE_FOLDERS_NAME "serve-folders"
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25 #include "../Common/OrthancPluginCppWrapper.h"
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27 #include <json/value.h>
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28 #include <boost/filesystem.hpp>
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29 #include <boost/date_time/posix_time/posix_time.hpp>
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32 #if HAS_ORTHANC_EXCEPTION == 1
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33 # error The macro HAS_ORTHANC_EXCEPTION must be set to 0 to compile this plugin
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34 #endif
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35
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36
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37
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38 static std::map<std::string, std::string> extensions_;
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39 static std::map<std::string, std::string> folders_;
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40 static const char* INDEX_URI = "/app/plugin-serve-folders.html";
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41 static bool allowCache_ = false;
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42 static bool generateETag_ = true;
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43
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44
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45 static void SetHttpHeaders(OrthancPluginRestOutput* output)
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46 {
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47 if (!allowCache_)
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48 {
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49 // http://stackoverflow.com/a/2068407/881731
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50 OrthancPluginContext* context = OrthancPlugins::GetGlobalContext();
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51 OrthancPluginSetHttpHeader(context, output, "Cache-Control", "no-cache, no-store, must-revalidate");
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52 OrthancPluginSetHttpHeader(context, output, "Pragma", "no-cache");
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53 OrthancPluginSetHttpHeader(context, output, "Expires", "0");
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54 }
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55 }
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57
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58 static void RegisterDefaultExtensions()
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59 {
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60 extensions_["css"] = "text/css";
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61 extensions_["gif"] = "image/gif";
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62 extensions_["html"] = "text/html";
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63 extensions_["jpeg"] = "image/jpeg";
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64 extensions_["jpg"] = "image/jpeg";
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65 extensions_["js"] = "application/javascript";
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66 extensions_["json"] = "application/json";
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67 extensions_["map"] = "application/octet-stream"; // https://stackoverflow.com/a/19912684/881731
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68 extensions_["nexe"] = "application/x-nacl";
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69 extensions_["nmf"] = "application/json";
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70 extensions_["pdf"] = "application/pdf";
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71 extensions_["pexe"] = "application/x-pnacl";
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72 extensions_["png"] = "image/png";
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73 extensions_["svg"] = "image/svg+xml";
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74 extensions_["wasm"] = "application/wasm";
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75 extensions_["woff"] = "application/x-font-woff";
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76 extensions_["woff2"] = "font/woff2";
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77 extensions_["xml"] = "application/xml";
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78 }
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79
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80
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81 static std::string GetMimeType(const std::string& path)
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82 {
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83 size_t dot = path.find_last_of('.');
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84
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85 std::string extension = (dot == std::string::npos) ? "" : path.substr(dot + 1);
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86 std::transform(extension.begin(), extension.end(), extension.begin(), tolower);
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87
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88 std::map<std::string, std::string>::const_iterator found = extensions_.find(extension);
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89
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90 if (found != extensions_.end() &&
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91 !found->second.empty())
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92 {
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93 return found->second;
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94 }
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95 else
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96 {
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97 ORTHANC_PLUGINS_LOG_WARNING("ServeFolders: Unknown MIME type for extension \"" + extension + "\"");
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98 return "application/octet-stream";
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99 }
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100 }
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101
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102
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103 static bool LookupFolder(std::string& folder,
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104 OrthancPluginRestOutput* output,
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105 const OrthancPluginHttpRequest* request)
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106 {
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107 const std::string uri = request->groups[0];
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108
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109 std::map<std::string, std::string>::const_iterator found = folders_.find(uri);
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110 if (found == folders_.end())
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111 {
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112 ORTHANC_PLUGINS_LOG_ERROR("Unknown URI in plugin server-folders: " + uri);
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113 OrthancPluginSendHttpStatusCode(OrthancPlugins::GetGlobalContext(), output, 404);
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114 return false;
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115 }
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116 else
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117 {
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118 folder = found->second;
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119 return true;
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120 }
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121 }
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122
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123
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124 static void Answer(OrthancPluginRestOutput* output,
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125 const char* content,
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126 size_t size,
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127 const std::string& mime)
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128 {
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129 if (generateETag_)
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130 {
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131 OrthancPlugins::OrthancString md5;
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132 md5.Assign(OrthancPluginComputeMd5(OrthancPlugins::GetGlobalContext(), content, size));
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133
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134 std::string etag = "\"" + std::string(md5.GetContent()) + "\"";
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135 OrthancPluginSetHttpHeader(OrthancPlugins::GetGlobalContext(), output, "ETag", etag.c_str());
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136 }
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137
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138 SetHttpHeaders(output);
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139 OrthancPluginAnswerBuffer(OrthancPlugins::GetGlobalContext(), output, content, size, mime.c_str());
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140 }
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141
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142
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143 void ServeFolder(OrthancPluginRestOutput* output,
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144 const char* url,
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145 const OrthancPluginHttpRequest* request)
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146 {
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147 namespace fs = boost::filesystem;
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148
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149 if (request->method != OrthancPluginHttpMethod_Get)
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150 {
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151 OrthancPluginSendMethodNotAllowed(OrthancPlugins::GetGlobalContext(), output, "GET");
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152 return;
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153 }
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154
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155 std::string folder;
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156
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157 if (LookupFolder(folder, output, request))
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158 {
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159 const fs::path item(request->groups[1]);
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160 const fs::path parent((fs::path(folder) / item).parent_path());
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161
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162 if (item.filename().string() == "index.html" &&
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163 fs::is_directory(parent) &&
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164 !fs::is_regular_file(fs::path(folder) / item))
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165 {
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166 // On-the-fly generation of an "index.html"
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167 std::string s;
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168 s += "<html>\n";
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169 s += " <body>\n";
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170 s += " <ul>\n";
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171
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172 fs::directory_iterator end;
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173
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174 for (fs::directory_iterator it(parent) ; it != end; ++it)
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175 {
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176 if (fs::is_directory(it->status()))
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177 {
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178 std::string f = it->path().filename().string();
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179 s += " <li><a href=\"" + f + "/index.html\">" + f + "/</a></li>\n";
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180 }
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181 }
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182
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183 for (fs::directory_iterator it(parent) ; it != end; ++it)
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184 {
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185 fs::file_type type = it->status().type();
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186
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187 if (type == fs::regular_file ||
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188 type == fs::reparse_file) // cf. BitBucket issue #11
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189 {
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190 std::string f = it->path().filename().string();
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191 s += " <li><a href=\"" + f + "\">" + f + "</a></li>\n";
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192 }
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193 }
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194
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195 s += " </ul>\n";
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196 s += " </body>\n";
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197 s += "</html>\n";
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198
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199 Answer(output, s.c_str(), s.size(), "text/html");
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200 }
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201 else
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202 {
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203 std::string path = folder + "/" + item.string();
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204 std::string mime = GetMimeType(path);
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205
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206 OrthancPlugins::MemoryBuffer content;
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207
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208 try
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209 {
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210 content.ReadFile(path);
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211 }
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212 catch (...)
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213 {
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214 ORTHANC_PLUGINS_THROW_EXCEPTION(InexistentFile);
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215 }
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216
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217 boost::posix_time::ptime lastModification =
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218 boost::posix_time::from_time_t(fs::last_write_time(path));
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219 std::string t = boost::posix_time::to_iso_string(lastModification);
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220 OrthancPluginSetHttpHeader(OrthancPlugins::GetGlobalContext(),
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221 output, "Last-Modified", t.c_str());
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222
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223 Answer(output, content.GetData(), content.GetSize(), mime);
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224 }
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225 }
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226 }
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227
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228
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229 void ListServedFolders(OrthancPluginRestOutput* output,
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230 const char* url,
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231 const OrthancPluginHttpRequest* request)
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232 {
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233 if (request->method != OrthancPluginHttpMethod_Get)
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234 {
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235 OrthancPluginSendMethodNotAllowed(OrthancPlugins::GetGlobalContext(), output, "GET");
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236 return;
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237 }
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238
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239 std::string s = "<html><body><h1>Additional folders served by Orthanc</h1>\n";
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240
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241 if (folders_.empty())
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242 {
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243 s += "<p>Empty section <tt>ServeFolders</tt> in your configuration file: No additional folder is served.</p>\n";
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244 }
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245 else
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246 {
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247 s += "<ul>\n";
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248 for (std::map<std::string, std::string>::const_iterator
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249 it = folders_.begin(); it != folders_.end(); ++it)
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250 {
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251 // The URI is relative to INDEX_URI ("/app/plugin-serve-folders.html")
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252 s += "<li><a href=\"../" + it->first + "/index.html\">" + it->first + "</li>\n";
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253 }
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254
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255 s += "</ul>\n";
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256 }
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257
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258 s += "</body></html>\n";
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259
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260 Answer(output, s.c_str(), s.size(), "text/html");
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261 }
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262
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263
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264 static void ConfigureFolders(const Json::Value& folders)
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265 {
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266 if (folders.type() != Json::objectValue)
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267 {
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268 ORTHANC_PLUGINS_LOG_ERROR("The list of folders to be served is badly formatted (must be a JSON object)");
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269 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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270 }
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271
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272 Json::Value::Members members = folders.getMemberNames();
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273
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274 // Register the callback for each base URI
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275 for (Json::Value::Members::const_iterator
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276 it = members.begin(); it != members.end(); ++it)
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277 {
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278 if (folders[*it].type() != Json::stringValue)
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279 {
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280 ORTHANC_PLUGINS_LOG_ERROR("The folder to be served \"" + *it +
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281 "\" must be associated with a string value (its mapped URI)");
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282 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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283 }
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284
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285 std::string baseUri = *it;
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286
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287 // Remove the heading and trailing slashes in the root URI, if any
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288 while (!baseUri.empty() &&
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289 *baseUri.begin() == '/')
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290 {
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291 baseUri = baseUri.substr(1);
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292 }
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293
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294 while (!baseUri.empty() &&
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295 *baseUri.rbegin() == '/')
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296 {
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297 baseUri.resize(baseUri.size() - 1);
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298 }
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299
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300 if (baseUri.empty())
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301 {
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302 ORTHANC_PLUGINS_LOG_ERROR("The URI of a folder to be served cannot be empty");
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303 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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304 }
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305
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306 // Check whether the source folder exists and is indeed a directory
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307 const std::string folder = folders[*it].asString();
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308 if (!boost::filesystem::is_directory(folder))
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309 {
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310 ORTHANC_PLUGINS_LOG_ERROR("Trying to serve an inexistent folder: " + folder);
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311 ORTHANC_PLUGINS_THROW_EXCEPTION(InexistentFile);
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312 }
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313
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314 folders_[baseUri] = folder;
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315
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316 // Register the callback to serve the folder
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317 {
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318 const std::string regex = "/(" + baseUri + ")/(.*)";
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319 OrthancPlugins::RegisterRestCallback<ServeFolder>(regex.c_str(), true);
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320 }
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321 }
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322 }
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323
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324
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325 static void ConfigureExtensions(const Json::Value& extensions)
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326 {
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327 if (extensions.type() != Json::objectValue)
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328 {
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329 ORTHANC_PLUGINS_LOG_ERROR("The list of extensions is badly formatted (must be a JSON object)");
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330 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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331 }
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332
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333 Json::Value::Members members = extensions.getMemberNames();
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334
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335 for (Json::Value::Members::const_iterator
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336 it = members.begin(); it != members.end(); ++it)
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337 {
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338 if (extensions[*it].type() != Json::stringValue)
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339 {
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340 ORTHANC_PLUGINS_LOG_ERROR("The file extension \"" + *it +
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341 "\" must be associated with a string value (its MIME type)");
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342 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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343 }
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344
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345 const std::string& mime = extensions[*it].asString();
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346
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347 std::string name = *it;
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348
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349 if (!name.empty() &&
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350 name[0] == '.')
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351 {
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352 name = name.substr(1); // Remove the leading dot "."
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353 }
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354
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355 extensions_[name] = mime;
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356
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357 if (mime.empty())
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358 {
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359 ORTHANC_PLUGINS_LOG_WARNING("ServeFolders: Removing MIME type for file extension \"." +
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360 name + "\"");
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361 }
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362 else
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363 {
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364 ORTHANC_PLUGINS_LOG_WARNING("ServeFolders: Associating file extension \"." + name +
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365 "\" with MIME type \"" + mime + "\"");
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366 }
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367 }
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368 }
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369
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370
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371 static void ReadConfiguration()
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372 {
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373 OrthancPlugins::OrthancConfiguration configuration;
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374
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375 {
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376 OrthancPlugins::OrthancConfiguration globalConfiguration;
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377 globalConfiguration.GetSection(configuration, "ServeFolders");
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378 }
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379
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380 if (!configuration.IsSection("Folders"))
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381 {
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382 // This is a basic configuration
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383 ConfigureFolders(configuration.GetJson());
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384 }
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385 else
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386 {
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387 // This is an advanced configuration
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388 ConfigureFolders(configuration.GetJson()["Folders"]);
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389
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390 bool tmp;
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391
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392 if (configuration.LookupBooleanValue(tmp, "AllowCache"))
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393 {
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394 allowCache_ = tmp;
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395 ORTHANC_PLUGINS_LOG_WARNING("ServeFolders: Requesting the HTTP client to " +
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396 std::string(tmp ? "enable" : "disable") +
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397 " its caching mechanism");
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398 }
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399
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400 if (configuration.LookupBooleanValue(tmp, "GenerateETag"))
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401 {
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402 generateETag_ = tmp;
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403 ORTHANC_PLUGINS_LOG_WARNING("ServeFolders: The computation of an ETag for the served resources is " +
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404 std::string(tmp ? "enabled" : "disabled"));
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405 }
2169
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406
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407 OrthancPlugins::OrthancConfiguration extensions;
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408 configuration.GetSection(extensions, "Extensions");
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409 ConfigureExtensions(extensions.GetJson());
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410 }
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411
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412 if (folders_.empty())
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413 {
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414 ORTHANC_PLUGINS_LOG_WARNING("ServeFolders: Empty configuration file: No additional folder will be served!");
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415 }
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416 }
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417
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418
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419 extern "C"
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420 {
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421 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context)
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parents:
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422 {
5563
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423 OrthancPlugins::SetGlobalContext(context, SERVE_FOLDERS_NAME);
1322
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424
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425 /* Check the version of the Orthanc core */
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426 if (OrthancPluginCheckVersion(context) == 0)
1322
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diff changeset
427 {
2958
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428 OrthancPlugins::ReportMinimalOrthancVersion(ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
2268
ce5c13b95dac New function: OrthancPluginRegisterIncomingHttpRequestFilter2()
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429 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
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430 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
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431 return -1;
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432 }
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diff changeset
433
2166
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diff changeset
434 RegisterDefaultExtensions();
5538
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435 OrthancPluginSetDescription2(context, SERVE_FOLDERS_NAME, "Serve additional folders with the HTTP server of Orthanc.");
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436 OrthancPluginSetRootUri2(context, SERVE_FOLDERS_NAME, INDEX_URI);
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437 OrthancPlugins::RegisterRestCallback<ListServedFolders>(INDEX_URI, true);
1322
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438
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diff changeset
439 try
1323
5a92665dee23 Sample plugin: Serve folders
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diff changeset
440 {
2167
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441 ReadConfiguration();
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442 }
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443 catch (OrthancPlugins::PluginException& e)
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444 {
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445 ORTHANC_PLUGINS_LOG_ERROR("Error while initializing the ServeFolders plugin: " +
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446 std::string(e.What(context)));
1323
5a92665dee23 Sample plugin: Serve folders
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447 }
5a92665dee23 Sample plugin: Serve folders
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diff changeset
448
1322
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449 return 0;
f497a72d9f71 fixes to the sample plugins
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450 }
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
451
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
452
f497a72d9f71 fixes to the sample plugins
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diff changeset
453 ORTHANC_PLUGINS_API void OrthancPluginFinalize()
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parents:
diff changeset
454 {
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
455 }
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
456
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
457
f497a72d9f71 fixes to the sample plugins
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diff changeset
458 ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
459 {
5538
6ce05f8b5b13 deprecating OrthancPluginSetDescription2(), OrthancPluginExtendOrthancExplorer2() and OrthancPluginSetRootUri2()
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diff changeset
460 return SERVE_FOLDERS_NAME;
1322
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461 }
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
462
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
463
f497a72d9f71 fixes to the sample plugins
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diff changeset
464 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
465 {
1391
b3119c32c920 version in ServerFolders plugin
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diff changeset
466 return SERVE_FOLDERS_VERSION;
1322
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467 }
f497a72d9f71 fixes to the sample plugins
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diff changeset
468 }