Mercurial > hg > orthanc
annotate Plugins/Engine/PluginsHttpHandler.cpp @ 907:9b8298234254 plugins
documentation
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 19 Jun 2014 14:28:43 +0200 |
parents | 2732b5f57d9c |
children | e078ea944089 |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, |
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4 * 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 * In addition, as a special exception, the copyright holders of this |
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12 * program give permission to link the code of its release with the |
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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14 * that use the same license as the "OpenSSL" library), and distribute |
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15 * the linked executables. You must obey the GNU General Public License |
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16 * in all respects for all of the code used other than "OpenSSL". If you |
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17 * modify file(s) with this exception, you may extend this exception to |
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18 * your version of the file(s), but you are not obligated to do so. If |
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19 * you do not wish to do so, delete this exception statement from your |
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20 * version. If you delete this exception statement from all source files |
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21 * in the program, then also delete it here. |
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22 * |
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23 * This program is distributed in the hope that it will be useful, but |
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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26 * General Public License for more details. |
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27 * |
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28 * You should have received a copy of the GNU General Public License |
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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30 **/ |
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31 |
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32 |
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33 #include "PluginsHttpHandler.h" |
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34 |
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35 #include "../../Core/OrthancException.h" |
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36 #include "../../Core/Toolbox.h" |
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38 #include "../../Core/ImageFormats/PngWriter.h" |
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39 |
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40 #include <boost/regex.hpp> |
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41 #include <glog/logging.h> |
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42 |
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43 namespace Orthanc |
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44 { |
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45 struct PluginsHttpHandler::PImpl |
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46 { |
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47 typedef std::pair<boost::regex*, OrthancPluginRestCallback> Callback; |
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48 typedef std::list<Callback> Callbacks; |
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49 |
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50 ServerContext& context_; |
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51 Callbacks callbacks_; |
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52 |
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53 PImpl(ServerContext& context) : context_(context) |
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54 { |
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55 } |
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56 }; |
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57 |
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58 |
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59 PluginsHttpHandler::PluginsHttpHandler(ServerContext& context) |
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60 { |
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61 pimpl_.reset(new PImpl(context)); |
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62 } |
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63 |
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64 |
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65 PluginsHttpHandler::~PluginsHttpHandler() |
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66 { |
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67 for (PImpl::Callbacks::iterator it = pimpl_->callbacks_.begin(); |
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68 it != pimpl_->callbacks_.end(); it++) |
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69 { |
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70 delete it->first; |
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71 } |
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72 } |
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73 |
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74 |
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75 bool PluginsHttpHandler::Handle(HttpOutput& output, |
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76 HttpMethod method, |
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77 const UriComponents& uri, |
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78 const Arguments& headers, |
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79 const Arguments& getArguments, |
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80 const std::string& postData) |
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81 { |
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82 std::string flatUri = Toolbox::FlattenUri(uri); |
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83 OrthancPluginRestCallback callback = NULL; |
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84 |
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85 std::vector<std::string> groups; |
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86 std::vector<const char*> cgroups; |
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87 |
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88 bool found = false; |
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89 for (PImpl::Callbacks::const_iterator it = pimpl_->callbacks_.begin(); |
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90 it != pimpl_->callbacks_.end() && !found; it++) |
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91 { |
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92 boost::cmatch what; |
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93 if (boost::regex_match(flatUri.c_str(), what, *(it->first))) |
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94 { |
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95 callback = it->second; |
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96 |
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97 if (what.size() > 1) |
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98 { |
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99 groups.resize(what.size() - 1); |
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100 cgroups.resize(what.size() - 1); |
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101 for (size_t i = 1; i < what.size(); i++) |
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102 { |
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103 groups[i - 1] = what[i]; |
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104 cgroups[i - 1] = groups[i - 1].c_str(); |
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105 } |
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106 } |
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107 |
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108 found = true; |
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109 } |
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110 } |
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111 |
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112 if (!found) |
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113 { |
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114 return false; |
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115 } |
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116 |
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117 LOG(INFO) << "Delegating HTTP request to plugin for URI: " << flatUri; |
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118 |
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119 std::vector<const char*> getKeys(getArguments.size()); |
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120 std::vector<const char*> getValues(getArguments.size()); |
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121 |
899 | 122 OrthancPluginHttpRequest request; |
123 memset(&request, 0, sizeof(OrthancPluginHttpRequest)); | |
124 | |
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125 switch (method) |
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126 { |
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127 case HttpMethod_Get: |
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128 { |
899 | 129 request.method = OrthancPluginHttpMethod_Get; |
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130 |
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131 size_t i = 0; |
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132 for (Arguments::const_iterator it = getArguments.begin(); |
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133 it != getArguments.end(); it++, i++) |
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134 { |
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135 getKeys[i] = it->first.c_str(); |
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136 getValues[i] = it->second.c_str(); |
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137 } |
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138 |
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139 break; |
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140 } |
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141 |
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142 case HttpMethod_Post: |
899 | 143 request.method = OrthancPluginHttpMethod_Post; |
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144 break; |
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145 |
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146 case HttpMethod_Delete: |
899 | 147 request.method = OrthancPluginHttpMethod_Delete; |
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148 break; |
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149 |
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150 case HttpMethod_Put: |
899 | 151 request.method = OrthancPluginHttpMethod_Put; |
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152 break; |
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153 |
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154 default: |
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155 throw OrthancException(ErrorCode_InternalError); |
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156 } |
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157 |
899 | 158 |
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159 request.groups = (cgroups.size() ? &cgroups[0] : NULL); |
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160 request.groupsCount = cgroups.size(); |
899 | 161 request.getCount = getArguments.size(); |
162 request.body = (postData.size() ? &postData[0] : NULL); | |
163 request.bodySize = postData.size(); | |
164 | |
165 if (getArguments.size() > 0) | |
166 { | |
167 request.getKeys = &getKeys[0]; | |
168 request.getValues = &getValues[0]; | |
169 } | |
170 | |
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171 assert(callback != NULL); |
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172 int32_t error = callback(reinterpret_cast<OrthancPluginRestOutput*>(&output), |
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173 flatUri.c_str(), |
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174 &request); |
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175 |
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176 if (error < 0) |
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177 { |
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178 LOG(ERROR) << "Plugin failed with error code " << error; |
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179 return false; |
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180 } |
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181 else |
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182 { |
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183 if (error > 0) |
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184 { |
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185 LOG(WARNING) << "Plugin finished with warning code " << error; |
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186 } |
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187 |
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188 return true; |
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189 } |
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190 } |
899 | 191 |
192 | |
907 | 193 bool PluginsHttpHandler::InvokeService(_OrthancPluginService service, |
899 | 194 const void* parameters) |
195 { | |
196 switch (service) | |
197 { | |
907 | 198 case _OrthancPluginService_RegisterRestCallback: |
899 | 199 { |
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200 const _OrthancPluginRestCallback& p = |
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201 *reinterpret_cast<const _OrthancPluginRestCallback*>(parameters); |
899 | 202 |
203 LOG(INFO) << "Plugin has registered a REST callback on: " << p.pathRegularExpression; | |
204 pimpl_->callbacks_.push_back(std::make_pair(new boost::regex(p.pathRegularExpression), p.callback)); | |
205 | |
206 return true; | |
207 } | |
208 | |
907 | 209 case _OrthancPluginService_AnswerBuffer: |
899 | 210 { |
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211 const _OrthancPluginAnswerBuffer& p = |
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212 *reinterpret_cast<const _OrthancPluginAnswerBuffer*>(parameters); |
899 | 213 |
214 HttpOutput* translatedOutput = reinterpret_cast<HttpOutput*>(p.output); | |
215 translatedOutput->AnswerBufferWithContentType(p.answer, p.answerSize, p.mimeType); | |
216 | |
217 return true; | |
218 } | |
219 | |
907 | 220 case _OrthancPluginService_CompressAndAnswerPngImage: |
901
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221 { |
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222 const _OrthancPluginCompressAndAnswerPngImage& p = |
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223 *reinterpret_cast<const _OrthancPluginCompressAndAnswerPngImage*>(parameters); |
901
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224 |
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225 HttpOutput* translatedOutput = reinterpret_cast<HttpOutput*>(p.output); |
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226 |
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227 PixelFormat format; |
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228 switch (p.format) |
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229 { |
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230 case OrthancPluginPixelFormat_Grayscale8: |
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231 format = PixelFormat_Grayscale8; |
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232 break; |
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233 |
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234 case OrthancPluginPixelFormat_Grayscale16: |
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235 format = PixelFormat_Grayscale16; |
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236 break; |
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237 |
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238 case OrthancPluginPixelFormat_SignedGrayscale16: |
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239 format = PixelFormat_SignedGrayscale16; |
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240 break; |
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241 |
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242 case OrthancPluginPixelFormat_RGB24: |
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243 format = PixelFormat_RGB24; |
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244 break; |
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245 |
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246 case OrthancPluginPixelFormat_RGBA32: |
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247 format = PixelFormat_RGBA32; |
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248 break; |
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249 |
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250 default: |
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251 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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252 } |
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253 |
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254 ImageAccessor accessor; |
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255 accessor.AssignReadOnly(format, p.width, p.height, p.pitch, p.buffer); |
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256 |
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257 PngWriter writer; |
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258 std::string png; |
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259 writer.WriteToMemory(png, accessor); |
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260 |
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261 translatedOutput->AnswerBufferWithContentType(png, "image/png"); |
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262 |
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263 return true; |
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264 } |
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265 |
907 | 266 case _OrthancPluginService_GetDicomForInstance: |
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267 { |
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268 const _OrthancPluginGetDicomForInstance& p = |
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269 *reinterpret_cast<const _OrthancPluginGetDicomForInstance*>(parameters); |
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270 |
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271 std::string dicom; |
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272 pimpl_->context_.ReadFile(dicom, p.instanceId, FileContentType_Dicom); |
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273 |
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274 p.target->size = dicom.size(); |
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275 |
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276 if (dicom.size() == 0) |
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277 { |
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278 p.target->data = NULL; |
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279 } |
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280 else |
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281 { |
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282 p.target->data = malloc(dicom.size()); |
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283 if (p.target->data != NULL) |
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284 { |
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285 memcpy(p.target->data, &dicom[0], dicom.size()); |
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286 } |
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287 else |
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288 { |
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289 return false; |
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290 } |
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291 } |
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292 |
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293 return true; |
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294 } |
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295 |
899 | 296 default: |
297 return false; | |
298 } | |
299 } | |
300 | |
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301 } |