Mercurial > hg > orthanc
annotate Core/HttpClient.cpp @ 2009:e2dd40abce72
catching SIGHUP signal
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 09 Jun 2016 17:25:34 +0200 |
parents | f3339c4f8bf4 |
children | 0ae26237569a |
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0 | 1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
0 | 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. |
0 | 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. |
0 | 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/>. |
0 | 30 **/ |
31 | |
32 | |
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33 #include "PrecompiledHeaders.h" |
0 | 34 #include "HttpClient.h" |
35 | |
1404 | 36 #include "Toolbox.h" |
37 #include "OrthancException.h" | |
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38 #include "Logging.h" |
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39 |
0 | 40 #include <string.h> |
41 #include <curl/curl.h> | |
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42 #include <boost/algorithm/string/predicate.hpp> |
1989 | 43 #include <boost/thread/mutex.hpp> |
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44 |
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45 |
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46 extern "C" |
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47 { |
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48 static CURLcode GetHttpStatus(CURLcode code, CURL* curl, long* status) |
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49 { |
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50 if (code == CURLE_OK) |
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51 { |
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52 code = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, status); |
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53 return code; |
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54 } |
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55 else |
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56 { |
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57 *status = 0; |
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58 return code; |
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59 } |
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60 } |
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61 |
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62 // This is a dummy wrapper function to suppress any OpenSSL-related |
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63 // problem in valgrind. Inlining is prevented. |
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64 #if defined(__GNUC__) || defined(__clang__) |
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65 __attribute__((noinline)) |
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66 #endif |
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67 static CURLcode OrthancHttpClientPerformSSL(CURL* curl, long* status) |
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68 { |
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69 return GetHttpStatus(curl_easy_perform(curl), curl, status); |
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70 } |
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71 } |
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72 |
0 | 73 |
74 | |
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75 namespace Orthanc |
0 | 76 { |
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77 class HttpClient::GlobalParameters |
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78 { |
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79 private: |
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80 boost::mutex mutex_; |
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81 bool httpsVerifyPeers_; |
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82 std::string httpsCACertificates_; |
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83 std::string proxy_; |
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84 long timeout_; |
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85 |
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86 GlobalParameters() : |
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87 httpsVerifyPeers_(true), |
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88 timeout_(0) |
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89 { |
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90 } |
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91 |
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92 public: |
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93 // Singleton pattern |
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94 static GlobalParameters& GetInstance() |
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95 { |
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96 static GlobalParameters parameters; |
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97 return parameters; |
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98 } |
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99 |
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100 void ConfigureSsl(bool httpsVerifyPeers, |
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101 const std::string& httpsCACertificates) |
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102 { |
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103 boost::mutex::scoped_lock lock(mutex_); |
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104 httpsVerifyPeers_ = httpsVerifyPeers; |
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105 httpsCACertificates_ = httpsCACertificates; |
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106 } |
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107 |
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108 void GetSslConfiguration(bool& httpsVerifyPeers, |
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109 std::string& httpsCACertificates) |
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110 { |
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111 boost::mutex::scoped_lock lock(mutex_); |
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112 httpsVerifyPeers = httpsVerifyPeers_; |
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113 httpsCACertificates = httpsCACertificates_; |
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114 } |
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115 |
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116 void SetDefaultProxy(const std::string& proxy) |
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117 { |
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118 LOG(INFO) << "Setting the default proxy for HTTP client connections: " << proxy; |
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119 |
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120 { |
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121 boost::mutex::scoped_lock lock(mutex_); |
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122 proxy_ = proxy; |
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123 } |
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124 } |
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125 |
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126 void GetDefaultProxy(std::string& target) |
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127 { |
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128 boost::mutex::scoped_lock lock(mutex_); |
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129 target = proxy_; |
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130 } |
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131 |
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132 void SetDefaultTimeout(long seconds) |
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133 { |
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134 LOG(INFO) << "Setting the default timeout for HTTP client connections: " << seconds << " seconds"; |
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135 |
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136 { |
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137 boost::mutex::scoped_lock lock(mutex_); |
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138 timeout_ = seconds; |
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139 } |
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140 } |
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141 |
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142 long GetDefaultTimeout() |
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143 { |
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144 boost::mutex::scoped_lock lock(mutex_); |
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145 return timeout_; |
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146 } |
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147 }; |
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148 |
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149 |
0 | 150 struct HttpClient::PImpl |
151 { | |
152 CURL* curl_; | |
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153 struct curl_slist *defaultPostHeaders_; |
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154 struct curl_slist *userHeaders_; |
0 | 155 }; |
156 | |
157 | |
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158 static void ThrowException(HttpStatus status) |
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159 { |
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160 switch (status) |
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161 { |
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162 case HttpStatus_400_BadRequest: |
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163 throw OrthancException(ErrorCode_BadRequest); |
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164 |
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165 case HttpStatus_401_Unauthorized: |
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166 case HttpStatus_403_Forbidden: |
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167 throw OrthancException(ErrorCode_Unauthorized); |
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168 |
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169 case HttpStatus_404_NotFound: |
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170 throw OrthancException(ErrorCode_InexistentItem); |
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171 |
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172 default: |
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173 throw OrthancException(ErrorCode_NetworkProtocol); |
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174 } |
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175 } |
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176 |
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177 |
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178 |
0 | 179 static CURLcode CheckCode(CURLcode code) |
180 { | |
181 if (code != CURLE_OK) | |
182 { | |
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183 LOG(ERROR) << "libCURL error: " + std::string(curl_easy_strerror(code)); |
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184 throw OrthancException(ErrorCode_NetworkProtocol); |
0 | 185 } |
186 | |
187 return code; | |
188 } | |
189 | |
190 | |
191 static size_t CurlCallback(void *buffer, size_t size, size_t nmemb, void *payload) | |
192 { | |
193 std::string& target = *(static_cast<std::string*>(payload)); | |
194 | |
195 size_t length = size * nmemb; | |
196 if (length == 0) | |
197 return 0; | |
198 | |
199 size_t pos = target.size(); | |
200 | |
201 target.resize(pos + length); | |
202 memcpy(&target.at(pos), buffer, length); | |
203 | |
204 return length; | |
205 } | |
206 | |
207 | |
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208 void HttpClient::Setup() |
0 | 209 { |
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210 pimpl_->userHeaders_ = NULL; |
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211 pimpl_->defaultPostHeaders_ = NULL; |
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212 if ((pimpl_->defaultPostHeaders_ = curl_slist_append(pimpl_->defaultPostHeaders_, "Expect:")) == NULL) |
0 | 213 { |
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214 throw OrthancException(ErrorCode_NotEnoughMemory); |
0 | 215 } |
216 | |
217 pimpl_->curl_ = curl_easy_init(); | |
218 if (!pimpl_->curl_) | |
219 { | |
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220 curl_slist_free_all(pimpl_->defaultPostHeaders_); |
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221 throw OrthancException(ErrorCode_NotEnoughMemory); |
0 | 222 } |
223 | |
224 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_WRITEFUNCTION, &CurlCallback)); | |
225 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HEADER, 0)); | |
226 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_FOLLOWLOCATION, 1)); | |
227 | |
456 | 228 // This fixes the "longjmp causes uninitialized stack frame" crash |
229 // that happens on modern Linux versions. | |
230 // http://stackoverflow.com/questions/9191668/error-longjmp-causes-uninitialized-stack-frame | |
231 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_NOSIGNAL, 1)); | |
232 | |
0 | 233 url_ = ""; |
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234 method_ = HttpMethod_Get; |
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235 lastStatus_ = HttpStatus_200_Ok; |
0 | 236 isVerbose_ = false; |
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237 timeout_ = GlobalParameters::GetInstance().GetDefaultTimeout(); |
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238 GlobalParameters::GetInstance().GetDefaultProxy(proxy_); |
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239 GlobalParameters::GetInstance().GetSslConfiguration(verifyPeers_, caCertificates_); |
0 | 240 } |
241 | |
242 | |
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243 HttpClient::HttpClient() : pimpl_(new PImpl) |
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244 { |
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245 Setup(); |
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246 } |
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247 |
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248 |
0 | 249 HttpClient::~HttpClient() |
250 { | |
251 curl_easy_cleanup(pimpl_->curl_); | |
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252 curl_slist_free_all(pimpl_->defaultPostHeaders_); |
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253 ClearHeaders(); |
0 | 254 } |
255 | |
256 | |
257 void HttpClient::SetVerbose(bool isVerbose) | |
258 { | |
259 isVerbose_ = isVerbose; | |
260 | |
261 if (isVerbose_) | |
262 { | |
263 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_VERBOSE, 1)); | |
264 } | |
265 else | |
266 { | |
267 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_VERBOSE, 0)); | |
268 } | |
269 } | |
270 | |
271 | |
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272 void HttpClient::AddHeader(const std::string& key, |
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273 const std::string& value) |
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274 { |
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275 if (key.empty()) |
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276 { |
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277 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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278 } |
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279 |
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280 std::string s = key + ": " + value; |
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281 |
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282 if ((pimpl_->userHeaders_ = curl_slist_append(pimpl_->userHeaders_, s.c_str())) == NULL) |
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283 { |
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284 throw OrthancException(ErrorCode_NotEnoughMemory); |
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285 } |
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286 } |
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287 |
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288 |
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289 void HttpClient::ClearHeaders() |
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290 { |
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291 if (pimpl_->userHeaders_ != NULL) |
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292 { |
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293 curl_slist_free_all(pimpl_->userHeaders_); |
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294 pimpl_->userHeaders_ = NULL; |
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295 } |
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296 } |
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297 |
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298 |
0 | 299 bool HttpClient::Apply(std::string& answer) |
300 { | |
301 answer.clear(); | |
302 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_URL, url_.c_str())); | |
303 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_WRITEDATA, &answer)); | |
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304 |
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305 // Setup HTTPS-related options |
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306 #if ORTHANC_SSL_ENABLED == 1 |
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307 if (verifyPeers_) |
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308 { |
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309 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_CAINFO, caCertificates_.c_str())); |
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310 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_SSL_VERIFYHOST, 2)); // libcurl default is strict verifyhost |
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311 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_SSL_VERIFYPEER, 1)); |
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312 } |
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313 else |
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314 { |
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315 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_SSL_VERIFYHOST, 0)); |
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316 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_SSL_VERIFYPEER, 0)); |
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317 } |
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318 #endif |
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319 |
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320 // Reset the parameters from previous calls to Apply() |
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321 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPHEADER, pimpl_->userHeaders_)); |
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322 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPGET, 0L)); |
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323 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POST, 0L)); |
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324 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_NOBODY, 0L)); |
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325 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_CUSTOMREQUEST, NULL)); |
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326 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDS, NULL)); |
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327 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDSIZE, 0)); |
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328 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_PROXY, NULL)); |
0 | 329 |
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330 // Set timeouts |
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331 if (timeout_ <= 0) |
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332 { |
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333 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_TIMEOUT, 10)); /* default: 10 seconds */ |
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334 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_CONNECTTIMEOUT, 10)); /* default: 10 seconds */ |
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335 } |
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336 else |
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337 { |
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338 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_TIMEOUT, timeout_)); |
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339 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_CONNECTTIMEOUT, timeout_)); |
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340 } |
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341 |
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342 if (credentials_.size() != 0) |
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343 { |
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344 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_USERPWD, credentials_.c_str())); |
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345 } |
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346 |
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347 if (proxy_.size() != 0) |
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348 { |
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349 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_PROXY, proxy_.c_str())); |
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350 } |
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351 |
0 | 352 switch (method_) |
353 { | |
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354 case HttpMethod_Get: |
0 | 355 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPGET, 1L)); |
356 break; | |
357 | |
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358 case HttpMethod_Post: |
0 | 359 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POST, 1L)); |
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360 |
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361 if (pimpl_->userHeaders_ == NULL) |
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362 { |
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363 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPHEADER, pimpl_->defaultPostHeaders_)); |
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364 } |
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365 |
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366 break; |
0 | 367 |
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368 case HttpMethod_Delete: |
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369 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_NOBODY, 1L)); |
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370 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_CUSTOMREQUEST, "DELETE")); |
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371 break; |
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372 |
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373 case HttpMethod_Put: |
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374 // http://stackoverflow.com/a/7570281/881731: Don't use |
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375 // CURLOPT_PUT if there is a body |
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376 |
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377 // CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_PUT, 1L)); |
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378 |
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379 curl_easy_setopt(pimpl_->curl_, CURLOPT_CUSTOMREQUEST, "PUT"); /* !!! */ |
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380 |
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381 if (pimpl_->userHeaders_ == NULL) |
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382 { |
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383 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPHEADER, pimpl_->defaultPostHeaders_)); |
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|
384 } |
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|
385 |
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386 break; |
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|
387 |
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|
388 default: |
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389 throw OrthancException(ErrorCode_InternalError); |
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390 } |
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|
391 |
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|
392 |
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|
393 if (method_ == HttpMethod_Post || |
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394 method_ == HttpMethod_Put) |
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395 { |
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|
396 if (body_.size() > 0) |
0 | 397 { |
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|
398 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDS, body_.c_str())); |
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|
399 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDSIZE, body_.size())); |
0 | 400 } |
401 else | |
402 { | |
403 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDS, NULL)); | |
404 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDSIZE, 0)); | |
405 } | |
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406 } |
0 | 407 |
408 | |
409 // Do the actual request | |
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|
410 CURLcode code; |
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|
411 long status = 0; |
0 | 412 |
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|
413 if (boost::starts_with(url_, "https://")) |
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|
414 { |
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|
415 code = OrthancHttpClientPerformSSL(pimpl_->curl_, &status); |
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|
416 } |
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|
417 else |
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|
418 { |
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|
419 code = GetHttpStatus(curl_easy_perform(pimpl_->curl_), pimpl_->curl_, &status); |
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420 } |
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421 |
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|
422 CheckCode(code); |
0 | 423 |
424 if (status == 0) | |
425 { | |
426 // This corresponds to a call to an inexistent host | |
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427 lastStatus_ = HttpStatus_500_InternalServerError; |
0 | 428 } |
429 else | |
430 { | |
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|
431 lastStatus_ = static_cast<HttpStatus>(status); |
0 | 432 } |
433 | |
1987
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|
434 bool success = (status >= 200 && status < 300); |
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|
435 |
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|
436 if (!success) |
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|
437 { |
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diff
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|
438 LOG(INFO) << "Error in HTTP request, received HTTP status " << status |
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|
439 << " (" << EnumerationToString(lastStatus_) << ")"; |
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|
440 } |
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|
441 |
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diff
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|
442 return success; |
0 | 443 } |
444 | |
445 | |
446 bool HttpClient::Apply(Json::Value& answer) | |
447 { | |
448 std::string s; | |
449 if (Apply(s)) | |
450 { | |
451 Json::Reader reader; | |
452 return reader.parse(s, answer); | |
453 } | |
454 else | |
455 { | |
456 return false; | |
457 } | |
458 } | |
144
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diff
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|
459 |
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|
460 |
468
456b9d2e9af4
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diff
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|
461 void HttpClient::SetCredentials(const char* username, |
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|
462 const char* password) |
144
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|
463 { |
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|
464 credentials_ = std::string(username) + ":" + std::string(password); |
144
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|
465 } |
457 | 466 |
1987
ce90d109bb64
new plugin functions: OrthancPluginHttpClient and OrthancPluginGenerateUuid
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diff
changeset
|
467 |
ce90d109bb64
new plugin functions: OrthancPluginHttpClient and OrthancPluginGenerateUuid
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468 void HttpClient::ConfigureSsl(bool httpsVerifyPeers, |
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469 const std::string& httpsVerifyCertificates) |
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470 { |
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471 #if ORTHANC_SSL_ENABLED == 1 |
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472 if (httpsVerifyPeers) |
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473 { |
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474 if (httpsVerifyCertificates.empty()) |
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475 { |
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476 LOG(WARNING) << "No certificates are provided to validate peers, " |
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477 << "set \"HttpsCACertificates\" if you need to do HTTPS requests"; |
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478 } |
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479 else |
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480 { |
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481 LOG(WARNING) << "HTTPS will use the CA certificates from this file: " << httpsVerifyCertificates; |
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482 } |
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483 } |
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484 else |
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485 { |
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486 LOG(WARNING) << "The verification of the peers in HTTPS requests is disabled"; |
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487 } |
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488 #endif |
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489 |
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490 GlobalParameters::GetInstance().ConfigureSsl(httpsVerifyPeers, httpsVerifyCertificates); |
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491 } |
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492 |
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493 |
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494 void HttpClient::GlobalInitialize() |
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495 { |
457 | 496 CheckCode(curl_global_init(CURL_GLOBAL_DEFAULT)); |
497 } | |
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498 |
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499 |
457 | 500 void HttpClient::GlobalFinalize() |
501 { | |
502 curl_global_cleanup(); | |
503 } | |
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504 |
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505 |
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506 void HttpClient::SetDefaultProxy(const std::string& proxy) |
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507 { |
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508 GlobalParameters::GetInstance().SetDefaultProxy(proxy); |
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509 } |
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510 |
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511 |
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512 void HttpClient::SetDefaultTimeout(long timeout) |
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513 { |
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514 GlobalParameters::GetInstance().SetDefaultTimeout(timeout); |
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515 } |
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516 |
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517 |
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518 void HttpClient::ApplyAndThrowException(std::string& answer) |
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519 { |
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520 if (!Apply(answer)) |
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521 { |
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522 ThrowException(GetLastStatus()); |
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523 } |
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524 } |
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525 |
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526 void HttpClient::ApplyAndThrowException(Json::Value& answer) |
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527 { |
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528 if (!Apply(answer)) |
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529 { |
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530 ThrowException(GetLastStatus()); |
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531 } |
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532 } |
0 | 533 } |