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annotate Core/RestApi/RestApiOutput.cpp @ 3669:445bda258245

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 14 Feb 2020 09:04:40 +0100
parents 94f4a18a79cc
children
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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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) 2017-2020 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 General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #include "../PrecompiledHeaders.h"
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35 #include "RestApiOutput.h"
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36
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37 #include "../Logging.h"
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38 #include "../OrthancException.h"
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39 #include "../Toolbox.h"
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40
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41 #include <boost/lexical_cast.hpp>
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42
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43
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44 namespace Orthanc
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45 {
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46 RestApiOutput::RestApiOutput(HttpOutput& output,
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47 HttpMethod method) :
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48 output_(output),
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49 method_(method),
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50 convertJsonToXml_(false)
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51 {
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52 alreadySent_ = false;
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53 }
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55 RestApiOutput::~RestApiOutput()
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56 {
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57 }
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59 void RestApiOutput::Finalize()
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60 {
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61 if (!alreadySent_)
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62 {
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63 if (method_ == HttpMethod_Post)
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64 {
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65 output_.SendStatus(HttpStatus_400_BadRequest);
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66 }
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67 else
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68 {
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69 output_.SendStatus(HttpStatus_404_NotFound);
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70 }
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71 }
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72 }
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73
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74 void RestApiOutput::CheckStatus()
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75 {
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76 if (alreadySent_)
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77 {
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78 throw OrthancException(ErrorCode_BadSequenceOfCalls);
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79 }
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80 }
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81
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82
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83 void RestApiOutput::AnswerStream(IHttpStreamAnswer& stream)
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84 {
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85 CheckStatus();
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86 output_.Answer(stream);
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87 alreadySent_ = true;
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88 }
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89
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90 void RestApiOutput::AnswerJson(const Json::Value& value)
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91 {
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92 CheckStatus();
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93
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94 if (convertJsonToXml_)
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95 {
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96 #if ORTHANC_ENABLE_PUGIXML == 1
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97 std::string s;
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98 Toolbox::JsonToXml(s, value);
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99
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100 output_.SetContentType(MIME_XML_UTF8);
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101 output_.Answer(s);
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102 #else
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103 throw OrthancException(ErrorCode_InternalError,
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104 "Orthanc was compiled without XML support");
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105 #endif
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106 }
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107 else
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108 {
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109 Json::StyledWriter writer;
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110 std::string s = writer.write(value);
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111
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112 output_.SetContentType(MIME_JSON_UTF8);
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113 output_.Answer(s);
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114 }
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115
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116 alreadySent_ = true;
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117 }
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118
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119 void RestApiOutput::AnswerBuffer(const std::string& buffer,
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120 MimeType contentType)
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121 {
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122 AnswerBuffer(buffer.size() == 0 ? NULL : buffer.c_str(),
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123 buffer.size(), contentType);
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124 }
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125
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126 void RestApiOutput::AnswerBuffer(const void* buffer,
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127 size_t length,
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128 MimeType contentType)
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129 {
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130 CheckStatus();
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131
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132 if (convertJsonToXml_ &&
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133 contentType == MimeType_Json)
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134 {
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135 Json::Value json;
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136 Json::Reader reader;
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137 if (reader.parse(reinterpret_cast<const char*>(buffer),
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138 reinterpret_cast<const char*>(buffer) + length, json))
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139 {
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140 AnswerJson(json);
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141 }
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142 else
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143 {
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144 throw OrthancException(ErrorCode_BadFileFormat,
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145 "The REST API tries and answers with an invalid JSON file");
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146 }
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147 }
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148 else
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149 {
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150 output_.SetContentType(contentType);
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151 output_.Answer(buffer, length);
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152 alreadySent_ = true;
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153 }
339
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154 }
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155
215
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156 void RestApiOutput::Redirect(const std::string& path)
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157 {
211
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158 CheckStatus();
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159 output_.Redirect(path);
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160 alreadySent_ = true;
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161 }
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162
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163 void RestApiOutput::SignalErrorInternal(HttpStatus status,
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164 const char* message,
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165 size_t messageSize)
216
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166 {
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167 if (status != HttpStatus_400_BadRequest &&
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168 status != HttpStatus_403_Forbidden &&
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169 status != HttpStatus_500_InternalServerError &&
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170 status != HttpStatus_415_UnsupportedMediaType)
216
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171 {
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172 throw OrthancException(ErrorCode_BadHttpStatusInRest);
216
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173 }
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174
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175 CheckStatus();
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176 output_.SendStatus(status, message, messageSize);
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177 alreadySent_ = true;
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178 }
330
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179
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180 void RestApiOutput::SignalError(HttpStatus status)
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181 {
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182 SignalErrorInternal(status, NULL, 0);
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183 }
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184
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185 void RestApiOutput::SignalError(HttpStatus status,
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186 const std::string& message)
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187 {
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188 SignalErrorInternal(status, message.c_str(), message.size());
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189 }
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190
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191 void RestApiOutput::SetCookie(const std::string& name,
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192 const std::string& value,
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193 unsigned int maxAge)
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194 {
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195 if (name.find(";") != std::string::npos ||
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196 name.find(" ") != std::string::npos ||
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197 value.find(";") != std::string::npos ||
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198 value.find(" ") != std::string::npos)
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199 {
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200 throw OrthancException(ErrorCode_NotImplemented);
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201 }
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202
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203 CheckStatus();
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204
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205 std::string v = value + ";path=/";
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206
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207 if (maxAge != 0)
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208 {
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209 v += ";max-age=" + boost::lexical_cast<std::string>(maxAge);
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210 }
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211
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212 output_.SetCookie(name, v);
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213 }
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214
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215 void RestApiOutput::ResetCookie(const std::string& name)
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216 {
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217 // This marks the cookie to be deleted by the browser in 1 second,
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218 // and before it actually gets deleted, its value is set to the
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219 // empty string
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220 SetCookie(name, "", 1);
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221 }
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222 }