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1802
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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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19
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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 <boost/filesystem.hpp>
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24 #include <json/value.h>
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25 #include <json/reader.h>
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26 #include <string.h>
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27 #include <iostream>
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28
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29 static OrthancPluginContext* context_ = NULL;
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30 static std::string folder_;
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31
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32
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33 static bool ReadFile(std::string& result,
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34 const std::string& path)
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35 {
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36 OrthancPluginMemoryBuffer tmp;
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37 if (OrthancPluginReadFile(context_, &tmp, path.c_str()))
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38 {
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39 return false;
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40 }
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41 else
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42 {
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43 result.assign(reinterpret_cast<const char*>(tmp.data), tmp.size);
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44 OrthancPluginFreeMemoryBuffer(context_, &tmp);
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45 return true;
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46 }
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47 }
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48
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49
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50 /**
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51 * This is the main function for matching a DICOM worklist against a query.
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52 **/
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53 static OrthancPluginErrorCode MatchWorklist(OrthancPluginWorklistAnswers* answers,
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54 const OrthancPluginWorklistQuery* query,
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55 const std::string& path)
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56 {
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57 std::string dicom;
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58 if (!ReadFile(dicom, path))
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59 {
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60 // Cannot read this file, ignore this error
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61 return OrthancPluginErrorCode_Success;
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62 }
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63
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64 if (OrthancPluginIsWorklistMatch(context_, query, dicom.c_str(), dicom.size()))
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65 {
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66 // This DICOM file matches the worklist query, add it to the answers
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67 return OrthancPluginWorklistAddWorklistAnswer
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68 (context_, answers, query, dicom.c_str(), dicom.size());
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69 }
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70 else
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71 {
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72 // This DICOM file does not match
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73 return OrthancPluginErrorCode_Success;
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74 }
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75 }
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76
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77
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78
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79 static bool ConvertToJson(Json::Value& result,
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80 char* content)
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81 {
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82 if (content == NULL)
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83 {
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84 return false;
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85 }
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86 else
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87 {
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88 Json::Reader reader;
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89 bool success = reader.parse(content, content + strlen(content), result);
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90 OrthancPluginFreeString(context_, content);
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91 return success;
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92 }
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93 }
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94
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95
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96
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97 static bool GetQueryDicom(Json::Value& value,
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98 const OrthancPluginWorklistQuery* query)
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99 {
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100 OrthancPluginMemoryBuffer dicom;
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101 if (OrthancPluginGetWorklistQueryDicom(context_, &dicom, query))
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102 {
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103 return false;
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104 }
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105
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106 char* json = OrthancPluginDicomBufferToJson(context_, reinterpret_cast<const char*>(dicom.data),
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107 dicom.size,
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108 OrthancPluginDicomToJsonFormat_Short,
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109 static_cast<OrthancPluginDicomToJsonFlags>(0), 0);
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110 OrthancPluginFreeMemoryBuffer(context_, &dicom);
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111
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112 return ConvertToJson(value, json);
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113 }
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114
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115
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116 OrthancPluginErrorCode Callback(OrthancPluginWorklistAnswers* answers,
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117 const OrthancPluginWorklistQuery* query,
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118 const char* remoteAet,
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119 const char* calledAet)
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120 {
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121 Json::Value json;
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122
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123 if (!GetQueryDicom(json, query))
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124 {
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125 return OrthancPluginErrorCode_InternalError;
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126 }
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127
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128 std::cout << "Received worklist query from remote modality " << remoteAet
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129 << ":" << std::endl << json.toStyledString();
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130
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131 boost::filesystem::path source(folder_);
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132 boost::filesystem::directory_iterator end;
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133
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134 try
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135 {
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136 for (boost::filesystem::directory_iterator it(source); it != end; ++it)
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137 {
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138 if (is_regular_file(it->status()))
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139 {
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140 std::string extension = boost::filesystem::extension(it->path());
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141 if (!strcasecmp(".wl", extension.c_str()))
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142 {
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143 OrthancPluginErrorCode error = MatchWorklist(answers, query, it->path().string());
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144 if (error)
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145 {
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146 OrthancPluginLogError(context_, "Error while adding an answer to a worklist request");
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147 return error;
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148 }
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149 }
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150 }
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151 }
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152 }
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153 catch (boost::filesystem::filesystem_error&)
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154 {
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155 std::string description = std::string("Inexistent folder while scanning for worklists: ") + source.string();
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156 OrthancPluginLogError(context_, description.c_str());
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157 return OrthancPluginErrorCode_DirectoryExpected;
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158 }
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159
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160 // Uncomment the following line if too many answers are to be returned
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161 // OrthancPluginMarkWorklistAnswersIncomplete(context_, answers);
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162
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163 return OrthancPluginErrorCode_Success;
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164 }
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165
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166
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167 extern "C"
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168 {
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169 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* c)
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170 {
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171 context_ = c;
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172 OrthancPluginLogWarning(context_, "Storage plugin is initializing");
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173
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174 /* Check the version of the Orthanc core */
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175 if (OrthancPluginCheckVersion(c) == 0)
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176 {
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177 char info[1024];
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178 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin",
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179 context_->orthancVersion,
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180 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
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181 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
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182 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
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183 OrthancPluginLogError(context_, info);
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184 return -1;
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185 }
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186
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187 Json::Value configuration;
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188 if (!ConvertToJson(configuration, OrthancPluginGetConfiguration(context_)))
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189 {
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190 OrthancPluginLogError(context_, "Cannot access the configuration");
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191 return -1;
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192 }
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193
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194 if (configuration.isMember("WorklistsFolder"))
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195 {
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196 if (configuration["WorklistsFolder"].type() != Json::stringValue)
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197 {
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198 OrthancPluginLogError(context_, "The configuration option \"WorklistsFolder\" must be a string");
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199 return -1;
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200 }
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201
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202 folder_ = configuration["WorklistsFolder"].asString();
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203 }
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204 else
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205 {
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206 folder_ = DEFAULT_WORKLISTS_FOLDER;
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207 }
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208
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209 std::string message = "The database of worklists will be read from folder: " + folder_;
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210 OrthancPluginLogWarning(context_, message.c_str());
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211
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212 OrthancPluginRegisterWorklistCallback(context_, Callback);
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213
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214 return 0;
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215 }
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216
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217
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218 ORTHANC_PLUGINS_API void OrthancPluginFinalize()
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219 {
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220 OrthancPluginLogWarning(context_, "Sample worklist plugin is finalizing");
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221 }
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222
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223
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224 ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
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225 {
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226 return "sample-worklists";
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227 }
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228
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229
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230 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
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231 {
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232 return SAMPLE_MODALITY_WORKLISTS_VERSION;
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233 }
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234 }
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