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annotate Plugins/Samples/ServeFolders/Plugin.cpp @ 1589:334d3a92ed83

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improvements to the ServeFolders plugin
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 26 Aug 2015 17:43:00 +0200
parents b5bc87a7212d
children 415dfd1d1c61
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, 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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20
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21 #include <orthanc/OrthancCPlugin.h>
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22
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23 #include <json/reader.h>
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24 #include <json/value.h>
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25 #include <boost/filesystem.hpp>
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26
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27
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28 static OrthancPluginContext* context_ = NULL;
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29 static std::map<std::string, std::string> folders_;
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30 static const char* INDEX_URI = "/app/plugin-serve-folders.html";
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31
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32
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33 static const char* GetMimeType(const std::string& path)
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34 {
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35 size_t dot = path.find_last_of('.');
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36
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37 std::string extension = (dot == std::string::npos) ? "" : path.substr(dot);
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38 std::transform(extension.begin(), extension.end(), extension.begin(), tolower);
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39
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40 if (extension == ".html")
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41 {
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42 return "text/html";
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43 }
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44 else if (extension == ".css")
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45 {
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46 return "text/css";
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47 }
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48 else if (extension == ".js")
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49 {
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50 return "application/javascript";
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51 }
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52 else if (extension == ".gif")
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53 {
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54 return "image/gif";
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55 }
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56 else if (extension == ".svg")
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57 {
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58 return "image/svg+xml";
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59 }
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60 else if (extension == ".json")
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61 {
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62 return "application/json";
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63 }
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64 else if (extension == ".xml")
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65 {
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66 return "application/xml";
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67 }
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68 else if (extension == ".png")
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69 {
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70 return "image/png";
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71 }
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72 else if (extension == ".jpg" || extension == ".jpeg")
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73 {
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74 return "image/jpeg";
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75 }
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76 else if (extension == ".woff")
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77 {
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78 return "application/x-font-woff";
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79 }
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80 else
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81 {
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82 std::string s = "Unknown MIME type for extension: " + extension;
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83 OrthancPluginLogWarning(context_, s.c_str());
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84 return "application/octet-stream";
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85 }
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86 }
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87
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88
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89 static bool ReadFile(std::string& target,
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90 const std::string& path)
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91 {
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92 OrthancPluginMemoryBuffer buffer;
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93 if (OrthancPluginReadFile(context_, &buffer, path.c_str()))
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94 {
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95 return false;
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96 }
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97 else
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98 {
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99 target.assign(reinterpret_cast<const char*>(buffer.data), buffer.size);
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100 OrthancPluginFreeMemoryBuffer(context_, &buffer);
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101 return true;
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102 }
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103 }
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104
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105
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106 static bool ReadConfiguration(Json::Value& configuration,
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107 OrthancPluginContext* context)
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108 {
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109 std::string s;
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110
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111 {
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112 char* tmp = OrthancPluginGetConfiguration(context);
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113 if (tmp == NULL)
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114 {
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115 OrthancPluginLogError(context, "Error while retrieving the configuration from Orthanc");
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116 return false;
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117 }
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118
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119 s.assign(tmp);
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120 OrthancPluginFreeString(context, tmp);
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121 }
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122
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123 Json::Reader reader;
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124 if (reader.parse(s, configuration))
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125 {
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126 return true;
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127 }
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128 else
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129 {
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130 OrthancPluginLogError(context, "Unable to parse the configuration");
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131 return false;
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132 }
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133 }
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134
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135
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136
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137 static bool LookupFolder(std::string& folder,
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138 OrthancPluginRestOutput* output,
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139 const OrthancPluginHttpRequest* request)
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140 {
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141 const std::string uri = request->groups[0];
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142
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143 std::map<std::string, std::string>::const_iterator found = folders_.find(uri);
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144 if (found == folders_.end())
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145 {
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146 std::string s = "Unknown URI in plugin server-folders: " + uri;
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147 OrthancPluginLogError(context_, s.c_str());
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148 OrthancPluginSendHttpStatusCode(context_, output, 404);
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149 return false;
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150 }
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151 else
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152 {
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153 folder = found->second;
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154 return true;
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155 }
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156 }
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157
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158
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159 static int32_t IndexCallback(OrthancPluginRestOutput* output,
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160 const char* url,
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161 const OrthancPluginHttpRequest* request)
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162 {
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163 namespace fs = boost::filesystem;
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164
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165 if (request->method != OrthancPluginHttpMethod_Get)
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166 {
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167 OrthancPluginSendMethodNotAllowed(context_, output, "GET");
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168 return 0;
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169 }
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170
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171 std::string folder;
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172 if (LookupFolder(folder, output, request))
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173 {
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174 std::string baseUri = "/" + std::string(request->groups[0]);
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175
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176 if (fs::is_regular_file(fs::path(folder) / "index.html"))
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177 {
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178 std::string s = baseUri + "/index.html";
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179 OrthancPluginRedirect(context_, output, s.c_str());
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180 }
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181 else
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182 {
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183 std::string s;
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184 s += "<html>\n";
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185 s += " <body>\n";
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186 s += " <ul>\n";
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187
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188 fs::directory_iterator end;
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189 for (fs::directory_iterator it(folder) ; it != end; ++it)
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190 {
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191 if (fs::is_regular_file(it->status()))
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192 {
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193 std::string f = it->path().filename().string();
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194 s += " <li><a href=\"" + baseUri + "/" + f + "\">" + f + "</a></li>";
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195 }
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196 }
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197
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198 s += " </ul>\n";
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199 s += " </body>\n";
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200 s += "</html>\n";
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201
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202 OrthancPluginAnswerBuffer(context_, output, s.c_str(), s.size(), "text/html");
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203 }
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204 }
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205
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206 return 0;
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207 }
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208
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209
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210 static int32_t FolderCallback(OrthancPluginRestOutput* output,
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211 const char* url,
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212 const OrthancPluginHttpRequest* request)
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213 {
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214 if (request->method != OrthancPluginHttpMethod_Get)
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215 {
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216 OrthancPluginSendMethodNotAllowed(context_, output, "GET");
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217 return 0;
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218 }
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219
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220 std::string folder;
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221
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222 if (LookupFolder(folder, output, request))
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223 {
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224 const std::string item = request->groups[1];
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225
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226 std::string path = folder + "/" + item;
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227 const char* mime = GetMimeType(path);
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228
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229 std::string s;
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230 if (ReadFile(s, path))
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231 {
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232 const char* resource = s.size() ? s.c_str() : NULL;
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233 OrthancPluginAnswerBuffer(context_, output, resource, s.size(), mime);
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234 }
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235 else
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236 {
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237 std::string s = "Inexistent file in served folder: " + path;
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238 OrthancPluginLogError(context_, s.c_str());
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239 OrthancPluginSendHttpStatusCode(context_, output, 404);
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240 }
1323
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diff changeset
241 }
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diff changeset
242
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243 return 0;
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244 }
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245
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246
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247 static int32_t ListServedFolders(OrthancPluginRestOutput* output,
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248 const char* url,
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249 const OrthancPluginHttpRequest* request)
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250 {
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251 if (request->method != OrthancPluginHttpMethod_Get)
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diff changeset
252 {
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253 OrthancPluginSendMethodNotAllowed(context_, output, "GET");
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254 return 0;
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255 }
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diff changeset
256
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257 std::string s = "<html><body><h1>Additional folders served by Orthanc</h1>\n";
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diff changeset
258
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diff changeset
259 if (folders_.empty())
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diff changeset
260 {
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261 s += "<p>Empty section <tt>ServeFolders</tt> in your configuration file: No additional folder is served.</p>\n";
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262 }
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diff changeset
263 else
1323
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diff changeset
264 {
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diff changeset
265 s += "<ul>\n";
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266 for (std::map<std::string, std::string>::const_iterator
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diff changeset
267 it = folders_.begin(); it != folders_.end(); ++it)
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268 {
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269 s += "<li><a href=\"/" + it->first + "\">" + it->first + "</li>\n";
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diff changeset
270 }
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diff changeset
271
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272 s += "</ul>\n";
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273 }
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diff changeset
274
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275 s += "</body></html>\n";
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276
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277 OrthancPluginAnswerBuffer(context_, output, s.c_str(), s.size(), "text/html");
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278
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279 return 0;
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280 }
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281
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282
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283 extern "C"
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284 {
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285 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context)
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286 {
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287 context_ = context;
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288
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289 /* Check the version of the Orthanc core */
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290 if (OrthancPluginCheckVersion(context_) == 0)
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291 {
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292 char info[1024];
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293 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin",
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294 context_->orthancVersion,
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295 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
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296 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
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297 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
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298 OrthancPluginLogError(context_, info);
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299 return -1;
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300 }
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301
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302 OrthancPluginSetDescription(context_, "Serve additional folders with the HTTP server of Orthanc.");
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303
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304 Json::Value configuration;
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305 if (!ReadConfiguration(configuration, context_))
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306 {
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307 return -1;
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308 }
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309
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310 if (configuration.isMember("ServeFolders"))
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311 {
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312 if (configuration["ServeFolders"].type() != Json::objectValue)
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313 {
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314 OrthancPluginLogError(context_, "The \"ServeFolders\" configuration section is badly formatted (must be a JSON object)");
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315 return -1;
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316 }
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317 }
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318 else
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319 {
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320 OrthancPluginLogWarning(context_, "No section \"ServeFolders\" in your configuration file: "
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321 "No additional folder will be served!");
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322 configuration["ServeFolders"] = Json::objectValue;
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323 }
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324
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325
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326 Json::Value::Members members = configuration["ServeFolders"].getMemberNames();
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327
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328 // Register the callback for each base URI
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329 for (Json::Value::Members::const_iterator
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330 it = members.begin(); it != members.end(); ++it)
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331 {
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332 std::string baseUri = *it;
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333
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334 // Remove the heading and trailing slashes in the root URI, if any
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335 while (!baseUri.empty() &&
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336 *baseUri.begin() == '/')
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337 {
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338 baseUri = baseUri.substr(1);
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339 }
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340
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341 while (!baseUri.empty() &&
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342 *baseUri.rbegin() == '/')
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343 {
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344 baseUri.resize(baseUri.size() - 1);
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345 }
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346
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347 if (baseUri.empty())
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348 {
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349 OrthancPluginLogError(context_, "The URI of a folder to be served cannot be empty");
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350 return -1;
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351 }
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352
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353 // Check whether the source folder exists and is indeed a directory
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354 const std::string folder = configuration["ServeFolders"][*it].asString();
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355 if (!boost::filesystem::is_directory(folder))
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356 {
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357 std::string msg = "Trying and serve an inexistent folder: " + folder;
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358 OrthancPluginLogError(context_, msg.c_str());
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359 return -1;
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360 }
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diff changeset
361
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362 folders_[baseUri] = folder;
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363
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diff changeset
364 // Register the callback to serve the index of the folder
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365 {
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366 const std::string regex = "/(" + baseUri + ")";
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367 OrthancPluginRegisterRestCallback(context, regex.c_str(), IndexCallback);
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368 }
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diff changeset
369
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370 // Register the callback to serve the folder
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371 {
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372 const std::string regex = "/(" + baseUri + ")/(.*)";
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373 OrthancPluginRegisterRestCallback(context, regex.c_str(), FolderCallback);
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374 }
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375 }
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diff changeset
376
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377 OrthancPluginRegisterRestCallback(context, INDEX_URI, ListServedFolders);
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378 OrthancPluginSetRootUri(context, INDEX_URI);
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diff changeset
379
1322
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380 return 0;
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diff changeset
381 }
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parents:
diff changeset
382
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
383
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diff changeset
384 ORTHANC_PLUGINS_API void OrthancPluginFinalize()
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diff changeset
385 {
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parents:
diff changeset
386 }
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parents:
diff changeset
387
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
388
f497a72d9f71 fixes to the sample plugins
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diff changeset
389 ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
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diff changeset
390 {
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diff changeset
391 return "serve-folders";
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diff changeset
392 }
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parents:
diff changeset
393
f497a72d9f71 fixes to the sample plugins
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parents:
diff changeset
394
f497a72d9f71 fixes to the sample plugins
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diff changeset
395 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
f497a72d9f71 fixes to the sample plugins
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diff changeset
396 {
1391
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diff changeset
397 return SERVE_FOLDERS_VERSION;
1322
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diff changeset
398 }
f497a72d9f71 fixes to the sample plugins
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diff changeset
399 }