Mercurial > hg > orthanc

annotate Plugins/Samples/ServeFolders/Plugin.cpp @ 1554:89ab71a68fcf

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New function OrthancPluginBufferCompression() to (un)compress memory buffers
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 20 Aug 2015 11:56:42 +0200
parents f9cd40166269
children b5bc87a7212d
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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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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 <string.h>
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26 #include <stdio.h>
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27 #include <fstream>
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28 #include <algorithm>
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29 #include <sys/stat.h>
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30
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31 static OrthancPluginContext* context_ = NULL;
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32 static std::map<std::string, std::string> folders_;
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33 static const char* INDEX_URI = "/app/plugin-serve-folders.html";
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34
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35
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36 static const char* GetMimeType(const std::string& path)
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37 {
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38 size_t dot = path.find_last_of('.');
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39
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40 std::string extension = (dot == std::string::npos) ? "" : path.substr(dot);
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41 std::transform(extension.begin(), extension.end(), extension.begin(), tolower);
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42
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43 if (extension == ".html")
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44 {
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45 return "text/html";
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46 }
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47 else if (extension == ".css")
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48 {
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49 return "text/css";
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50 }
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51 else if (extension == ".js")
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52 {
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53 return "application/javascript";
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54 }
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55 else if (extension == ".gif")
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56 {
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57 return "image/gif";
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58 }
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59 else if (extension == ".svg")
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60 {
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61 return "image/svg+xml";
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62 }
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63 else if (extension == ".json")
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64 {
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65 return "application/json";
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66 }
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67 else if (extension == ".xml")
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68 {
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69 return "application/xml";
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70 }
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71 else if (extension == ".png")
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72 {
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73 return "image/png";
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74 }
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75 else if (extension == ".jpg" || extension == ".jpeg")
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76 {
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77 return "image/jpeg";
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78 }
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79 else if (extension == ".woff")
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80 {
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81 return "application/x-font-woff";
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82 }
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83 else
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84 {
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85 std::string s = "Unknown MIME type for extension: " + extension;
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86 OrthancPluginLogWarning(context_, s.c_str());
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87 return "application/octet-stream";
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88 }
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89 }
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90
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91
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92
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93 static bool ReadFile(std::string& content,
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94 const std::string& path)
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95 {
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96 struct stat s;
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97 if (stat(path.c_str(), &s) != 0 ||
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98 !(s.st_mode & S_IFREG))
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99 {
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100 // Either the path does not exist, or it is not a regular file
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101 return false;
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102 }
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103
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104 FILE* fp = fopen(path.c_str(), "rb");
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105 if (fp == NULL)
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106 {
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107 return false;
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108 }
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109
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110 long size;
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111
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112 if (fseek(fp, 0, SEEK_END) == -1 ||
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113 (size = ftell(fp)) < 0)
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114 {
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115 fclose(fp);
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116 return false;
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117 }
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118
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119 content.resize(size);
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120
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121 if (fseek(fp, 0, SEEK_SET) == -1)
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122 {
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123 fclose(fp);
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124 return false;
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125 }
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126
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127 bool ok = true;
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128
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129 if (size > 0 &&
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130 fread(&content[0], size, 1, fp) != 1)
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131 {
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132 ok = false;
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133 }
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134
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135 fclose(fp);
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136
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137 return ok;
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138 }
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139
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140
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141 static bool ReadConfiguration(Json::Value& configuration,
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142 OrthancPluginContext* context)
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143 {
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144 std::string s;
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145
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146 {
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147 char* tmp = OrthancPluginGetConfiguration(context);
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148 if (tmp == NULL)
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149 {
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150 OrthancPluginLogError(context, "Error while retrieving the configuration from Orthanc");
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151 return false;
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152 }
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153
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154 s.assign(tmp);
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155 OrthancPluginFreeString(context, tmp);
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156 }
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157
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158 Json::Reader reader;
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159 if (reader.parse(s, configuration))
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160 {
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161 return true;
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162 }
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163 else
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164 {
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165 OrthancPluginLogError(context, "Unable to parse the configuration");
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166 return false;
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167 }
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168 }
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169
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170
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171 static int32_t FolderCallback(OrthancPluginRestOutput* output,
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172 const char* url,
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173 const OrthancPluginHttpRequest* request)
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174 {
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175 if (request->method != OrthancPluginHttpMethod_Get)
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176 {
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177 OrthancPluginSendMethodNotAllowed(context_, output, "GET");
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178 return 0;
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179 }
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180
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181 const std::string uri = request->groups[0];
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182 const std::string item = request->groups[1];
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183
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184 std::map<std::string, std::string>::const_iterator found = folders_.find(uri);
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185 if (found == folders_.end())
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186 {
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187 std::string s = "Unknown URI in plugin server-folders: " + uri;
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188 OrthancPluginLogError(context_, s.c_str());
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189 OrthancPluginSendHttpStatusCode(context_, output, 404);
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190 return 0;
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191 }
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192
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193 std::string path = found->second + "/" + item;
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194 const char* mime = GetMimeType(path);
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195
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196 std::string s;
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197 if (ReadFile(s, path))
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198 {
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199 const char* resource = s.size() ? s.c_str() : NULL;
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200 OrthancPluginAnswerBuffer(context_, output, resource, s.size(), mime);
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201 }
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202 else
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203 {
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204 std::string s = "Inexistent file in served folder: " + path;
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205 OrthancPluginLogError(context_, s.c_str());
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206 OrthancPluginSendHttpStatusCode(context_, output, 404);
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207 }
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208
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209 return 0;
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210 }
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211
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212
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213 static int32_t IndexCallback(OrthancPluginRestOutput* output,
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214 const char* url,
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215 const OrthancPluginHttpRequest* request)
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216 {
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217 if (request->method != OrthancPluginHttpMethod_Get)
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218 {
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219 OrthancPluginSendMethodNotAllowed(context_, output, "GET");
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220 return 0;
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221 }
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222
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223 std::string s = "<html><body><h1>Additional folders served by Orthanc</h1>\n";
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224
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225 if (folders_.empty())
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226 {
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227 s += "<p>Empty section <tt>ServeFolders</tt> in your configuration file: No additional folder is served.</p>\n";
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228 }
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229 else
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230 {
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231 s += "<ul>\n";
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232 for (std::map<std::string, std::string>::const_iterator
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233 it = folders_.begin(); it != folders_.end(); ++it)
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234 {
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235 s += "<li><a href=\"" + it->first + "/index.html\">" + it->first + "</li>\n";
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236 }
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237
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238 s += "</ul>\n";
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239 }
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240
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241 s += "</body></html>\n";
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242
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243 OrthancPluginAnswerBuffer(context_, output, s.c_str(), s.size(), "text/html");
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244
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245 return 0;
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246 }
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247
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248
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249
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250 extern "C"
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251 {
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252 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context)
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253 {
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254 context_ = context;
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255
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256 /* Check the version of the Orthanc core */
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257 if (OrthancPluginCheckVersion(context_) == 0)
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258 {
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259 char info[1024];
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260 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin",
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261 context_->orthancVersion,
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262 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
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263 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
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264 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
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265 OrthancPluginLogError(context_, info);
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266 return -1;
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267 }
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268
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269 OrthancPluginSetDescription(context_, "Serve additional folders with the HTTP server of Orthanc.");
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270
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271 Json::Value configuration;
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272 if (!ReadConfiguration(configuration, context_))
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273 {
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274 return -1;
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275 }
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276
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277 if (configuration.isMember("ServeFolders"))
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278 {
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279 if (configuration["ServeFolders"].type() != Json::objectValue)
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280 {
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281 OrthancPluginLogError(context_, "The \"ServeFolders\" configuration section is badly formatted (must be a JSON object)");
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282 return -1;
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283 }
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284 }
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285 else
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286 {
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287 OrthancPluginLogWarning(context_, "No section \"ServeFolders\" in your configuration file: "
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288 "No additional folder will be served!");
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289 configuration["ServeFolders"] = Json::objectValue;
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290 }
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291
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292
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293 Json::Value::Members members = configuration["ServeFolders"].getMemberNames();
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294
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295 // Register the callback for each base URI
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296 for (Json::Value::Members::const_iterator
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297 it = members.begin(); it != members.end(); ++it)
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298 {
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299 const std::string& baseUri = *it;
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300 const std::string path = configuration["ServeFolders"][*it].asString();
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301 const std::string regex = "(" + baseUri + ")/(.*)";
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302
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303 if (baseUri.empty() ||
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304 *baseUri.rbegin() == '/')
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305 {
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306 std::string message = "The URI of a folder to be server cannot be empty or end with a '/': " + *it;
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307 OrthancPluginLogWarning(context_, message.c_str());
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308 return -1;
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309 }
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310
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311 OrthancPluginRegisterRestCallback(context, regex.c_str(), FolderCallback);
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312 folders_[baseUri] = path;
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313 }
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314
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315 OrthancPluginRegisterRestCallback(context, INDEX_URI, IndexCallback);
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316 OrthancPluginSetRootUri(context, INDEX_URI);
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317
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318 return 0;
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319 }
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320
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321
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322 ORTHANC_PLUGINS_API void OrthancPluginFinalize()
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323 {
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324 }
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325
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326
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327 ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
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328 {
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329 return "serve-folders";
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330 }
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331
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332
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333 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
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334 {
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335 return SERVE_FOLDERS_VERSION;
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336 }
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337 }