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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012 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 "RestApi.h"
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34
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35 namespace Orthanc
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36 {
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37 bool RestApi::IsGetAccepted(const UriComponents& uri)
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38 {
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39 for (GetHandlers::const_iterator it = getHandlers_.begin();
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40 it != getHandlers_.end(); it++)
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41 {
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42 if (it->first->Match(uri))
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43 {
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44 return true;
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45 }
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46 }
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47
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48 return false;
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49 }
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50
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51 bool RestApi::IsPutAccepted(const UriComponents& uri)
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52 {
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53 for (PutHandlers::const_iterator it = putHandlers_.begin();
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54 it != putHandlers_.end(); it++)
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55 {
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56 if (it->first->Match(uri))
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57 {
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58 return true;
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59 }
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60 }
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61
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62 return false;
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63 }
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64
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65 bool RestApi::IsPostAccepted(const UriComponents& uri)
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66 {
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67 for (PostHandlers::const_iterator it = postHandlers_.begin();
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68 it != postHandlers_.end(); it++)
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69 {
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70 if (it->first->Match(uri))
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71 {
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72 return true;
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73 }
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74 }
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75
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76 return false;
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77 }
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78
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79 bool RestApi::IsDeleteAccepted(const UriComponents& uri)
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80 {
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81 for (DeleteHandlers::const_iterator it = deleteHandlers_.begin();
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82 it != deleteHandlers_.end(); it++)
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83 {
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84 if (it->first->Match(uri))
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85 {
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86 return true;
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87 }
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88 }
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89
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90 return false;
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91 }
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92
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93 static void AddMethod(std::string& target,
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94 const std::string& method)
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95 {
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96 if (target.size() > 0)
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97 target += "," + method;
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98 else
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99 target = method;
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100 }
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101
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102 std::string RestApi::GetAcceptedMethods(const UriComponents& uri)
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103 {
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104 std::string s;
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105
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106 if (IsGetAccepted(uri))
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107 AddMethod(s, "GET");
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108
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109 if (IsPutAccepted(uri))
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110 AddMethod(s, "PUT");
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111
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112 if (IsPostAccepted(uri))
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113 AddMethod(s, "POST");
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114
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115 if (IsDeleteAccepted(uri))
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116 AddMethod(s, "DELETE");
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117
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118 return s;
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119 }
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120
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121 RestApi::~RestApi()
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122 {
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123 for (GetHandlers::iterator it = getHandlers_.begin();
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124 it != getHandlers_.end(); it++)
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125 {
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126 delete it->first;
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127 }
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128
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129 for (PutHandlers::iterator it = putHandlers_.begin();
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130 it != putHandlers_.end(); it++)
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131 {
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132 delete it->first;
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133 }
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134
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135 for (PostHandlers::iterator it = postHandlers_.begin();
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136 it != postHandlers_.end(); it++)
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137 {
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138 delete it->first;
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139 }
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140
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141 for (DeleteHandlers::iterator it = deleteHandlers_.begin();
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142 it != deleteHandlers_.end(); it++)
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143 {
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144 delete it->first;
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145 }
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146 }
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147
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148 bool RestApi::IsServedUri(const UriComponents& uri)
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149 {
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150 return (IsGetAccepted(uri) ||
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151 IsPutAccepted(uri) ||
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152 IsPostAccepted(uri) ||
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153 IsDeleteAccepted(uri));
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154 }
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155
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156 void RestApi::Handle(HttpOutput& output,
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157 const std::string& method,
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158 const UriComponents& uri,
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159 const Arguments& headers,
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160 const Arguments& getArguments,
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161 const std::string& postData)
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162 {
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163 bool ok = false;
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164 RestApiOutput restOutput(output);
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165 RestApiPath::Components components;
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166 UriComponents trailing;
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167
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168 if (method == "GET")
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169 {
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170 for (GetHandlers::const_iterator it = getHandlers_.begin();
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171 it != getHandlers_.end(); it++)
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172 {
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173 if (it->first->Match(components, trailing, uri))
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174 {
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175 ok = true;
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176 GetCall call;
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177 call.output_ = &restOutput;
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178 call.context_ = context_.get();
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179 call.httpHeaders_ = &headers;
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180 call.uriComponents_ = &components;
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181 call.trailing_ = &trailing;
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182
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183 call.getArguments_ = &getArguments;
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184 it->second(call);
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185 }
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186 }
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187 }
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188 else if (method == "PUT")
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189 {
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190 for (PutHandlers::const_iterator it = putHandlers_.begin();
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191 it != putHandlers_.end(); it++)
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192 {
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193 if (it->first->Match(components, trailing, uri))
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194 {
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195 ok = true;
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196 PutCall call;
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197 call.output_ = &restOutput;
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198 call.context_ = context_.get();
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199 call.httpHeaders_ = &headers;
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200 call.uriComponents_ = &components;
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201 call.trailing_ = &trailing;
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202
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203 call.data_ = &postData;
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204 it->second(call);
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205 }
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206 }
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207 }
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208 else if (method == "POST")
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209 {
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210 for (PostHandlers::const_iterator it = postHandlers_.begin();
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211 it != postHandlers_.end(); it++)
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212 {
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213 if (it->first->Match(components, trailing, uri))
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214 {
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215 ok = true;
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216 PostCall call;
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217 call.output_ = &restOutput;
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218 call.context_ = context_.get();
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219 call.httpHeaders_ = &headers;
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220 call.uriComponents_ = &components;
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221 call.trailing_ = &trailing;
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222
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223 call.data_ = &postData;
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224 it->second(call);
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225 }
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226 }
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227 }
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228 else if (method == "DELETE")
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229 {
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230 for (DeleteHandlers::const_iterator it = deleteHandlers_.begin();
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231 it != deleteHandlers_.end(); it++)
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232 {
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233 if (it->first->Match(components, trailing, uri))
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234 {
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235 ok = true;
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236 DeleteCall call;
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237 call.output_ = &restOutput;
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238 call.context_ = context_.get();
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239 call.httpHeaders_ = &headers;
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240 call.uriComponents_ = &components;
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241 call.trailing_ = &trailing;
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242 it->second(call);
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243 }
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244 }
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245 }
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246
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247 if (!ok)
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248 {
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249 output.SendMethodNotAllowedError(GetAcceptedMethods(uri));
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250 }
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251 }
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252
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253 void RestApi::Register(const std::string& path,
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254 GetHandler handler)
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255 {
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256 getHandlers_.push_back(std::make_pair(new RestApiPath(path), handler));
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257 }
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258
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259 void RestApi::Register(const std::string& path,
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260 PutHandler handler)
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261 {
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262 putHandlers_.push_back(std::make_pair(new RestApiPath(path), handler));
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263 }
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264
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265 void RestApi::Register(const std::string& path,
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266 PostHandler handler)
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267 {
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268 postHandlers_.push_back(std::make_pair(new RestApiPath(path), handler));
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269 }
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270
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271 void RestApi::Register(const std::string& path,
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272 DeleteHandler handler)
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273 {
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274 deleteHandlers_.push_back(std::make_pair(new RestApiPath(path), handler));
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275 }
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276 }
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