Mercurial > hg > orthanc

annotate OrthancServer/Plugins/Samples/ServeFolders/Plugin.cpp @ 4395:3c400d3c11ef

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removed useless includes
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 22 Dec 2020 08:14:54 +0100
parents 9a01e0f89b6d
children d9473bd5ed43
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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22 #include "../Common/OrthancPluginCppWrapper.h"
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23
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24 #include <json/value.h>
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25 #include <boost/filesystem.hpp>
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26 #include <boost/date_time/posix_time/posix_time.hpp>
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29 #if HAS_ORTHANC_EXCEPTION == 1
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30 # error The macro HAS_ORTHANC_EXCEPTION must be set to 0 to compile this plugin
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31 #endif
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32
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34
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35 static std::map<std::string, std::string> extensions_;
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36 static std::map<std::string, std::string> folders_;
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37 static const char* INDEX_URI = "/app/plugin-serve-folders.html";
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38 static bool allowCache_ = false;
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39 static bool generateETag_ = true;
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41
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42 static void SetHttpHeaders(OrthancPluginRestOutput* output)
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43 {
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44 if (!allowCache_)
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45 {
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46 // http://stackoverflow.com/a/2068407/881731
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47 OrthancPluginContext* context = OrthancPlugins::GetGlobalContext();
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48 OrthancPluginSetHttpHeader(context, output, "Cache-Control", "no-cache, no-store, must-revalidate");
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49 OrthancPluginSetHttpHeader(context, output, "Pragma", "no-cache");
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50 OrthancPluginSetHttpHeader(context, output, "Expires", "0");
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51 }
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52 }
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54
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55 static void RegisterDefaultExtensions()
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56 {
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57 extensions_["css"] = "text/css";
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58 extensions_["gif"] = "image/gif";
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59 extensions_["html"] = "text/html";
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60 extensions_["jpeg"] = "image/jpeg";
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61 extensions_["jpg"] = "image/jpeg";
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62 extensions_["js"] = "application/javascript";
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63 extensions_["json"] = "application/json";
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64 extensions_["map"] = "application/octet-stream"; // https://stackoverflow.com/a/19912684/881731
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65 extensions_["nexe"] = "application/x-nacl";
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66 extensions_["nmf"] = "application/json";
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67 extensions_["pdf"] = "application/pdf";
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68 extensions_["pexe"] = "application/x-pnacl";
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69 extensions_["png"] = "image/png";
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70 extensions_["svg"] = "image/svg+xml";
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71 extensions_["wasm"] = "application/wasm";
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72 extensions_["woff"] = "application/x-font-woff";
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73 extensions_["woff2"] = "font/woff2";
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74 extensions_["xml"] = "application/xml";
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75 }
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76
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77
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78 static std::string GetMimeType(const std::string& path)
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79 {
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80 size_t dot = path.find_last_of('.');
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81
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82 std::string extension = (dot == std::string::npos) ? "" : path.substr(dot + 1);
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83 std::transform(extension.begin(), extension.end(), extension.begin(), tolower);
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84
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85 std::map<std::string, std::string>::const_iterator found = extensions_.find(extension);
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86
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87 if (found != extensions_.end() &&
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88 !found->second.empty())
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89 {
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90 return found->second;
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91 }
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92 else
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93 {
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94 OrthancPlugins::LogWarning("ServeFolders: Unknown MIME type for extension \"" + extension + "\"");
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95 return "application/octet-stream";
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96 }
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97 }
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98
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99
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100 static bool LookupFolder(std::string& folder,
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101 OrthancPluginRestOutput* output,
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102 const OrthancPluginHttpRequest* request)
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103 {
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104 const std::string uri = request->groups[0];
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105
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106 std::map<std::string, std::string>::const_iterator found = folders_.find(uri);
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107 if (found == folders_.end())
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108 {
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109 OrthancPlugins::LogError("Unknown URI in plugin server-folders: " + uri);
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110 OrthancPluginSendHttpStatusCode(OrthancPlugins::GetGlobalContext(), output, 404);
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111 return false;
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112 }
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113 else
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114 {
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115 folder = found->second;
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116 return true;
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117 }
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118 }
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119
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120
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121 static void Answer(OrthancPluginRestOutput* output,
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122 const char* content,
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123 size_t size,
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124 const std::string& mime)
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125 {
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126 if (generateETag_)
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127 {
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128 OrthancPlugins::OrthancString md5;
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129 md5.Assign(OrthancPluginComputeMd5(OrthancPlugins::GetGlobalContext(), content, size));
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130
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131 std::string etag = "\"" + std::string(md5.GetContent()) + "\"";
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132 OrthancPluginSetHttpHeader(OrthancPlugins::GetGlobalContext(), output, "ETag", etag.c_str());
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133 }
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134
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135 SetHttpHeaders(output);
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136 OrthancPluginAnswerBuffer(OrthancPlugins::GetGlobalContext(), output, content, size, mime.c_str());
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137 }
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138
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139
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140 void ServeFolder(OrthancPluginRestOutput* output,
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141 const char* url,
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142 const OrthancPluginHttpRequest* request)
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143 {
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144 namespace fs = boost::filesystem;
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145
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146 if (request->method != OrthancPluginHttpMethod_Get)
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147 {
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148 OrthancPluginSendMethodNotAllowed(OrthancPlugins::GetGlobalContext(), output, "GET");
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149 return;
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150 }
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151
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152 std::string folder;
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153
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154 if (LookupFolder(folder, output, request))
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155 {
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156 const fs::path item(request->groups[1]);
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157 const fs::path parent((fs::path(folder) / item).parent_path());
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158
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159 if (item.filename().string() == "index.html" &&
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160 fs::is_directory(parent) &&
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161 !fs::is_regular_file(fs::path(folder) / item))
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162 {
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163 // On-the-fly generation of an "index.html"
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164 std::string s;
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165 s += "<html>\n";
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166 s += " <body>\n";
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167 s += " <ul>\n";
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168
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169 fs::directory_iterator end;
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170
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171 for (fs::directory_iterator it(parent) ; it != end; ++it)
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172 {
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173 if (fs::is_directory(it->status()))
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174 {
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175 std::string f = it->path().filename().string();
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176 s += " <li><a href=\"" + f + "/index.html\">" + f + "/</a></li>\n";
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177 }
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178 }
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179
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180 for (fs::directory_iterator it(parent) ; it != end; ++it)
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181 {
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182 fs::file_type type = it->status().type();
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183
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184 if (type == fs::regular_file ||
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185 type == fs::reparse_file) // cf. BitBucket issue #11
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186 {
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187 std::string f = it->path().filename().string();
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188 s += " <li><a href=\"" + f + "\">" + f + "</a></li>\n";
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189 }
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190 }
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191
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192 s += " </ul>\n";
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193 s += " </body>\n";
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194 s += "</html>\n";
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195
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196 Answer(output, s.c_str(), s.size(), "text/html");
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197 }
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198 else
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199 {
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200 std::string path = folder + "/" + item.string();
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201 std::string mime = GetMimeType(path);
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202
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203 OrthancPlugins::MemoryBuffer content;
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204
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205 try
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206 {
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207 content.ReadFile(path);
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208 }
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209 catch (...)
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210 {
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211 ORTHANC_PLUGINS_THROW_EXCEPTION(InexistentFile);
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212 }
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213
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214 boost::posix_time::ptime lastModification =
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215 boost::posix_time::from_time_t(fs::last_write_time(path));
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216 std::string t = boost::posix_time::to_iso_string(lastModification);
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217 OrthancPluginSetHttpHeader(OrthancPlugins::GetGlobalContext(),
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218 output, "Last-Modified", t.c_str());
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219
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220 Answer(output, content.GetData(), content.GetSize(), mime);
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221 }
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222 }
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223 }
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224
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225
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226 void ListServedFolders(OrthancPluginRestOutput* output,
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227 const char* url,
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228 const OrthancPluginHttpRequest* request)
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229 {
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230 if (request->method != OrthancPluginHttpMethod_Get)
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231 {
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232 OrthancPluginSendMethodNotAllowed(OrthancPlugins::GetGlobalContext(), output, "GET");
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233 return;
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234 }
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235
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236 std::string s = "<html><body><h1>Additional folders served by Orthanc</h1>\n";
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237
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238 if (folders_.empty())
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239 {
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240 s += "<p>Empty section <tt>ServeFolders</tt> in your configuration file: No additional folder is served.</p>\n";
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241 }
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242 else
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243 {
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244 s += "<ul>\n";
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245 for (std::map<std::string, std::string>::const_iterator
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246 it = folders_.begin(); it != folders_.end(); ++it)
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247 {
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248 // The URI is relative to INDEX_URI ("/app/plugin-serve-folders.html")
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249 s += "<li><a href=\"../" + it->first + "/index.html\">" + it->first + "</li>\n";
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250 }
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251
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252 s += "</ul>\n";
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253 }
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254
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255 s += "</body></html>\n";
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256
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257 Answer(output, s.c_str(), s.size(), "text/html");
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258 }
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259
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260
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261 static void ConfigureFolders(const Json::Value& folders)
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262 {
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263 if (folders.type() != Json::objectValue)
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264 {
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265 OrthancPlugins::LogError("The list of folders to be served is badly formatted (must be a JSON object)");
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266 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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267 }
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268
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269 Json::Value::Members members = folders.getMemberNames();
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270
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271 // Register the callback for each base URI
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272 for (Json::Value::Members::const_iterator
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273 it = members.begin(); it != members.end(); ++it)
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274 {
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275 if (folders[*it].type() != Json::stringValue)
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276 {
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277 OrthancPlugins::LogError("The folder to be served \"" + *it +
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278 "\" must be associated with a string value (its mapped URI)");
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279 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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280 }
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281
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282 std::string baseUri = *it;
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283
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284 // Remove the heading and trailing slashes in the root URI, if any
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285 while (!baseUri.empty() &&
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286 *baseUri.begin() == '/')
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287 {
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288 baseUri = baseUri.substr(1);
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289 }
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290
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291 while (!baseUri.empty() &&
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292 *baseUri.rbegin() == '/')
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293 {
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294 baseUri.resize(baseUri.size() - 1);
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295 }
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296
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297 if (baseUri.empty())
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298 {
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299 OrthancPlugins::LogError("The URI of a folder to be served cannot be empty");
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300 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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301 }
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302
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303 // Check whether the source folder exists and is indeed a directory
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304 const std::string folder = folders[*it].asString();
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305 if (!boost::filesystem::is_directory(folder))
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306 {
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307 OrthancPlugins::LogError("Trying to serve an inexistent folder: " + folder);
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308 ORTHANC_PLUGINS_THROW_EXCEPTION(InexistentFile);
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309 }
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310
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311 folders_[baseUri] = folder;
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312
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313 // Register the callback to serve the folder
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314 {
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315 const std::string regex = "/(" + baseUri + ")/(.*)";
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316 OrthancPlugins::RegisterRestCallback<ServeFolder>(regex.c_str(), true);
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317 }
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318 }
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319 }
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320
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321
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322 static void ConfigureExtensions(const Json::Value& extensions)
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323 {
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324 if (extensions.type() != Json::objectValue)
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325 {
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326 OrthancPlugins::LogError("The list of extensions is badly formatted (must be a JSON object)");
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327 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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328 }
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329
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330 Json::Value::Members members = extensions.getMemberNames();
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331
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332 for (Json::Value::Members::const_iterator
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333 it = members.begin(); it != members.end(); ++it)
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334 {
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335 if (extensions[*it].type() != Json::stringValue)
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336 {
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337 OrthancPlugins::LogError("The file extension \"" + *it +
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338 "\" must be associated with a string value (its MIME type)");
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339 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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340 }
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341
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342 const std::string& mime = extensions[*it].asString();
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343
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344 std::string name = *it;
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345
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346 if (!name.empty() &&
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347 name[0] == '.')
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348 {
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349 name = name.substr(1); // Remove the leading dot "."
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350 }
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351
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352 extensions_[name] = mime;
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353
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354 if (mime.empty())
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355 {
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356 OrthancPlugins::LogWarning("ServeFolders: Removing MIME type for file extension \"." +
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357 name + "\"");
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358 }
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359 else
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360 {
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361 OrthancPlugins::LogWarning("ServeFolders: Associating file extension \"." + name +
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362 "\" with MIME type \"" + mime + "\"");
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363 }
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364 }
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365 }
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366
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367
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368 static void ReadConfiguration()
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369 {
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370 OrthancPlugins::OrthancConfiguration configuration;
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371
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372 {
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373 OrthancPlugins::OrthancConfiguration globalConfiguration;
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374 globalConfiguration.GetSection(configuration, "ServeFolders");
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375 }
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376
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diff changeset
377 if (!configuration.IsSection("Folders"))
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378 {
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379 // This is a basic configuration
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380 ConfigureFolders(configuration.GetJson());
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381 }
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382 else
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383 {
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384 // This is an advanced configuration
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385 ConfigureFolders(configuration.GetJson()["Folders"]);
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386
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387 bool tmp;
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388
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389 if (configuration.LookupBooleanValue(tmp, "AllowCache"))
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390 {
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391 allowCache_ = tmp;
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392 OrthancPlugins::LogWarning("ServeFolders: Requesting the HTTP client to " +
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393 std::string(tmp ? "enable" : "disable") +
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394 " its caching mechanism");
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395 }
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396
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397 if (configuration.LookupBooleanValue(tmp, "GenerateETag"))
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398 {
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399 generateETag_ = tmp;
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400 OrthancPlugins::LogWarning("ServeFolders: The computation of an ETag for the "
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401 "served resources is " +
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402 std::string(tmp ? "enabled" : "disabled"));
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403 }
2169
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404
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405 OrthancPlugins::OrthancConfiguration extensions;
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406 configuration.GetSection(extensions, "Extensions");
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407 ConfigureExtensions(extensions.GetJson());
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408 }
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409
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410 if (folders_.empty())
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411 {
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412 OrthancPlugins::LogWarning("ServeFolders: Empty configuration file: "
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413 "No additional folder will be served!");
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414 }
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415 }
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416
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417
1322
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418 extern "C"
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419 {
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420 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context)
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421 {
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422 OrthancPlugins::SetGlobalContext(context);
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423
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424 /* Check the version of the Orthanc core */
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425 if (OrthancPluginCheckVersion(context) == 0)
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426 {
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427 OrthancPlugins::ReportMinimalOrthancVersion(ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
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428 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
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429 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
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430 return -1;
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431 }
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432
2166
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433 RegisterDefaultExtensions();
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434 OrthancPluginSetDescription(context, "Serve additional folders with the HTTP server of Orthanc.");
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435 OrthancPluginSetRootUri(context, INDEX_URI);
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436 OrthancPlugins::RegisterRestCallback<ListServedFolders>(INDEX_URI, true);
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437
2167
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438 try
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5a92665dee23 Sample plugin: Serve folders
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diff changeset
439 {
2167
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440 ReadConfiguration();
aa2915963531 "Folders" sub-configuration in ServeFolders
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441 }
aa2915963531 "Folders" sub-configuration in ServeFolders
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442 catch (OrthancPlugins::PluginException& e)
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443 {
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444 OrthancPlugins::LogError("Error while initializing the ServeFolders plugin: " +
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445 std::string(e.What(context)));
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5a92665dee23 Sample plugin: Serve folders
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446 }
5a92665dee23 Sample plugin: Serve folders
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diff changeset
447
1322
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448 return 0;
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449 }
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diff changeset
450
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
451
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452 ORTHANC_PLUGINS_API void OrthancPluginFinalize()
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453 {
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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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diff changeset
457 ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
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458 {
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459 return "serve-folders";
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460 }
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
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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diff changeset
463 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
f497a72d9f71 fixes to the sample plugins
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diff changeset
464 {
1391
b3119c32c920 version in ServerFolders plugin
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diff changeset
465 return SERVE_FOLDERS_VERSION;
1322
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466 }
f497a72d9f71 fixes to the sample plugins
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467 }