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1077
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1 /**
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2 * Stone of Orthanc
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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) 2017-2019 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 Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the 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 * Affero 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 Affero 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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20
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21
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22 #include "GenericOracleRunner.h"
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23
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24 #include "CustomOracleCommand.h"
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25 #include "GetOrthancImageCommand.h"
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26 #include "GetOrthancWebViewerJpegCommand.h"
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27 #include "HttpCommand.h"
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28 #include "OracleCommandExceptionMessage.h"
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29 #include "OrthancRestApiCommand.h"
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30
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31 #include <Core/Compression/GzipCompressor.h>
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32 #include <Core/HttpClient.h>
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33 #include <Core/OrthancException.h>
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34 #include <Core/Toolbox.h>
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35
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36 namespace OrthancStone
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37 {
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38 static void CopyHttpHeaders(Orthanc::HttpClient& client,
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39 const Orthanc::HttpClient::HttpHeaders& headers)
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40 {
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41 for (Orthanc::HttpClient::HttpHeaders::const_iterator
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42 it = headers.begin(); it != headers.end(); it++ )
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43 {
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44 client.AddHeader(it->first, it->second);
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45 }
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46 }
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47
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48
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49 static void DecodeAnswer(std::string& answer,
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50 const Orthanc::HttpClient::HttpHeaders& headers)
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51 {
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52 Orthanc::HttpCompression contentEncoding = Orthanc::HttpCompression_None;
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53
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54 for (Orthanc::HttpClient::HttpHeaders::const_iterator it = headers.begin();
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55 it != headers.end(); ++it)
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56 {
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57 std::string s;
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58 Orthanc::Toolbox::ToLowerCase(s, it->first);
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59
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60 if (s == "content-encoding")
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61 {
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62 if (it->second == "gzip")
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63 {
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64 contentEncoding = Orthanc::HttpCompression_Gzip;
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65 }
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66 else
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67 {
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68 throw Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol,
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69 "Unsupported HTTP Content-Encoding: " + it->second);
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70 }
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71
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72 break;
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73 }
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74 }
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75
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76 if (contentEncoding == Orthanc::HttpCompression_Gzip)
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77 {
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78 std::string compressed;
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79 answer.swap(compressed);
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80
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81 Orthanc::GzipCompressor compressor;
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82 compressor.Uncompress(answer, compressed.c_str(), compressed.size());
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83
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84 LOG(INFO) << "Uncompressing gzip Encoding: from " << compressed.size()
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85 << " to " << answer.size() << " bytes";
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86 }
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87 }
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88
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89
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90 static void Execute(IMessageEmitter& emitter,
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91 boost::weak_ptr<IObserver>& receiver,
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92 const HttpCommand& command)
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93 {
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94 Orthanc::HttpClient client;
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95 client.SetUrl(command.GetUrl());
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96 client.SetMethod(command.GetMethod());
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97 client.SetTimeout(command.GetTimeout());
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98
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99 CopyHttpHeaders(client, command.GetHttpHeaders());
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100
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101 if (command.GetMethod() == Orthanc::HttpMethod_Post ||
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102 command.GetMethod() == Orthanc::HttpMethod_Put)
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103 {
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104 client.SetBody(command.GetBody());
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105 }
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106
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107 std::string answer;
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108 Orthanc::HttpClient::HttpHeaders answerHeaders;
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109 client.ApplyAndThrowException(answer, answerHeaders);
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110
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111 DecodeAnswer(answer, answerHeaders);
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112
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113 HttpCommand::SuccessMessage message(command, answerHeaders, answer);
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114 emitter.EmitMessage(receiver, message);
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115 }
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116
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117
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118 static void Execute(IMessageEmitter& emitter,
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119 const Orthanc::WebServiceParameters& orthanc,
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120 boost::weak_ptr<IObserver>& receiver,
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121 const OrthancRestApiCommand& command)
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122 {
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123 Orthanc::HttpClient client(orthanc, command.GetUri());
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124 client.SetMethod(command.GetMethod());
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125 client.SetTimeout(command.GetTimeout());
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126
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127 CopyHttpHeaders(client, command.GetHttpHeaders());
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128
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129 if (command.GetMethod() == Orthanc::HttpMethod_Post ||
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130 command.GetMethod() == Orthanc::HttpMethod_Put)
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131 {
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132 client.SetBody(command.GetBody());
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133 }
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134
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135 std::string answer;
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136 Orthanc::HttpClient::HttpHeaders answerHeaders;
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137 client.ApplyAndThrowException(answer, answerHeaders);
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138
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139 DecodeAnswer(answer, answerHeaders);
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140
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141 OrthancRestApiCommand::SuccessMessage message(command, answerHeaders, answer);
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142 emitter.EmitMessage(receiver, message);
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143 }
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144
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145
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146 static void Execute(IMessageEmitter& emitter,
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147 const Orthanc::WebServiceParameters& orthanc,
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148 boost::weak_ptr<IObserver>& receiver,
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149 const GetOrthancImageCommand& command)
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150 {
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151 Orthanc::HttpClient client(orthanc, command.GetUri());
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152 client.SetTimeout(command.GetTimeout());
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153
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154 CopyHttpHeaders(client, command.GetHttpHeaders());
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155
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156 std::string answer;
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157 Orthanc::HttpClient::HttpHeaders answerHeaders;
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158 client.ApplyAndThrowException(answer, answerHeaders);
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159
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160 DecodeAnswer(answer, answerHeaders);
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161
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162 command.ProcessHttpAnswer(emitter, receiver, answer, answerHeaders);
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163 }
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164
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165
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166 static void Execute(IMessageEmitter& emitter,
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167 const Orthanc::WebServiceParameters& orthanc,
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168 boost::weak_ptr<IObserver>& receiver,
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169 const GetOrthancWebViewerJpegCommand& command)
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170 {
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171 Orthanc::HttpClient client(orthanc, command.GetUri());
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172 client.SetTimeout(command.GetTimeout());
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173
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174 CopyHttpHeaders(client, command.GetHttpHeaders());
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175
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176 std::string answer;
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177 Orthanc::HttpClient::HttpHeaders answerHeaders;
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178 client.ApplyAndThrowException(answer, answerHeaders);
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179
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180 DecodeAnswer(answer, answerHeaders);
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181
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182 command.ProcessHttpAnswer(emitter, receiver, answer);
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183 }
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184
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185
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186 void GenericOracleRunner::Run(boost::weak_ptr<IObserver>& receiver,
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187 IOracleCommand& command)
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188 {
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189 try
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190 {
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191 switch (command.GetType())
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192 {
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193 case IOracleCommand::Type_Sleep:
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194 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType,
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195 "Sleep command cannot be executed by the runner");
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196 break;
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197
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198 case IOracleCommand::Type_Http:
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199 Execute(emitter_, receiver,
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200 dynamic_cast<const HttpCommand&>(command));
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201 break;
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202
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203 case IOracleCommand::Type_OrthancRestApi:
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204 Execute(emitter_, orthanc_, receiver, dynamic_cast<const OrthancRestApiCommand&>(command));
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205 break;
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206
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207 case IOracleCommand::Type_GetOrthancImage:
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208 Execute(emitter_, orthanc_, receiver, dynamic_cast<const GetOrthancImageCommand&>(command));
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209 break;
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210
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211 case IOracleCommand::Type_GetOrthancWebViewerJpeg:
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212 Execute(emitter_, orthanc_, receiver, dynamic_cast<const GetOrthancWebViewerJpegCommand&>(command));
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213 break;
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214
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215 case IOracleCommand::Type_Custom:
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216 dynamic_cast<CustomOracleCommand&>(command).Execute(emitter_, receiver, *this);
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217 break;
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218
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219 default:
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220 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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221 }
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222 }
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223 catch (Orthanc::OrthancException& e)
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224 {
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225 LOG(ERROR) << "Exception within the oracle: " << e.What();
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226 emitter_.EmitMessage(receiver, OracleCommandExceptionMessage(command, e));
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227 }
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228 catch (...)
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229 {
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230 LOG(ERROR) << "Threaded exception within the oracle";
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231 emitter_.EmitMessage(receiver, OracleCommandExceptionMessage
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232 (command, Orthanc::ErrorCode_InternalError));
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233 }
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234 }
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235 }
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