annotate Core/RestApi/RestApiOutput.cpp @ 2122:2ecc95a239f7

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 07 Nov 2016 11:33:18 +0100
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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 *
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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 "../PrecompiledHeaders.h"
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34 #include "RestApiOutput.h"
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35
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36 #include "../Logging.h"
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37 #include "../OrthancException.h"
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38
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39 #include <boost/lexical_cast.hpp>
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41
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42 namespace Orthanc
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43 {
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44 RestApiOutput::RestApiOutput(HttpOutput& output,
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45 HttpMethod method) :
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46 output_(output),
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47 method_(method),
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48 convertJsonToXml_(false)
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49 {
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50 alreadySent_ = false;
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51 }
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52
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53 RestApiOutput::~RestApiOutput()
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54 {
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55 }
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57 void RestApiOutput::Finalize()
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58 {
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59 if (!alreadySent_)
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60 {
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61 if (method_ == HttpMethod_Post)
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62 {
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63 output_.SendStatus(HttpStatus_400_BadRequest);
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64 }
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65 else
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66 {
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67 output_.SendStatus(HttpStatus_404_NotFound);
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68 }
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69 }
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70 }
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71
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72 void RestApiOutput::CheckStatus()
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73 {
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74 if (alreadySent_)
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75 {
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76 throw OrthancException(ErrorCode_BadSequenceOfCalls);
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77 }
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78 }
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80
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81 void RestApiOutput::AnswerStream(IHttpStreamAnswer& stream)
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82 {
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83 CheckStatus();
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84 output_.Answer(stream);
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85 alreadySent_ = true;
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86 }
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87
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88 void RestApiOutput::AnswerJson(const Json::Value& value)
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89 {
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90 CheckStatus();
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91
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92 if (convertJsonToXml_)
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93 {
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94 #if ORTHANC_PUGIXML_ENABLED == 1
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95 std::string s;
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96 Toolbox::JsonToXml(s, value);
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97 output_.SetContentType("application/xml; charset=utf-8");
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98 output_.Answer(s);
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99 #else
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100 LOG(ERROR) << "Orthanc was compiled without XML support";
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101 throw OrthancException(ErrorCode_InternalError);
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102 #endif
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103 }
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104 else
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105 {
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106 Json::StyledWriter writer;
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107 output_.SetContentType("application/json; charset=utf-8");
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108 output_.Answer(writer.write(value));
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109 }
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110
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111 alreadySent_ = true;
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112 }
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113
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114 void RestApiOutput::AnswerBuffer(const std::string& buffer,
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115 const std::string& contentType)
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116 {
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117 AnswerBuffer(buffer.size() == 0 ? NULL : buffer.c_str(),
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118 buffer.size(), contentType);
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119 }
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120
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121 void RestApiOutput::AnswerBuffer(const void* buffer,
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122 size_t length,
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123 const std::string& contentType)
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124 {
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125 CheckStatus();
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126 output_.SetContentType(contentType.c_str());
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127 output_.Answer(buffer, length);
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128 alreadySent_ = true;
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129 }
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130
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131 void RestApiOutput::Redirect(const std::string& path)
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132 {
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133 CheckStatus();
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134 output_.Redirect(path);
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135 alreadySent_ = true;
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136 }
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137
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138 void RestApiOutput::SignalErrorInternal(HttpStatus status,
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139 const char* message,
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140 size_t messageSize)
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141 {
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142 if (status != HttpStatus_400_BadRequest &&
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143 status != HttpStatus_403_Forbidden &&
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144 status != HttpStatus_500_InternalServerError &&
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145 status != HttpStatus_415_UnsupportedMediaType)
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146 {
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147 throw OrthancException(ErrorCode_BadHttpStatusInRest);
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148 }
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149
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150 CheckStatus();
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151 output_.SendStatus(status, message, messageSize);
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152 alreadySent_ = true;
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153 }
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154
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155 void RestApiOutput::SignalError(HttpStatus status)
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156 {
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157 SignalErrorInternal(status, NULL, 0);
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158 }
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159
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160 void RestApiOutput::SignalError(HttpStatus status,
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161 const std::string& message)
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162 {
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163 SignalErrorInternal(status, message.c_str(), message.size());
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164 }
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165
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166 void RestApiOutput::SetCookie(const std::string& name,
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167 const std::string& value,
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168 unsigned int maxAge)
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169 {
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170 if (name.find(";") != std::string::npos ||
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171 name.find(" ") != std::string::npos ||
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172 value.find(";") != std::string::npos ||
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173 value.find(" ") != std::string::npos)
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174 {
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175 throw OrthancException(ErrorCode_NotImplemented);
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176 }
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177
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178 CheckStatus();
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179
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180 std::string v = value + ";path=/";
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181
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182 if (maxAge != 0)
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183 {
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184 v += ";max-age=" + boost::lexical_cast<std::string>(maxAge);
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185 }
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186
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187 output_.SetCookie(name, v);
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188 }
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189
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190 void RestApiOutput::ResetCookie(const std::string& name)
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191 {
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192 // This marks the cookie to be deleted by the browser in 1 second,
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193 // and before it actually gets deleted, its value is set to the
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194 // empty string
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195 SetCookie(name, "", 1);
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196 }
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197 }