Mercurial > hg > orthanc
annotate Core/HttpClient.cpp @ 755:584b59a80ffb Orthanc-0.7.4
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 16 Apr 2014 11:42:56 +0200 |
| parents | 203157cb4fde |
| children | a811bdf8b8eb |
| rev | line source |
|---|---|
| 0 | 1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
| 689 | 3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, |
| 0 | 4 * Belgium |
| 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 | |
| 33 #include "HttpClient.h" | |
| 34 | |
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35 #include "../Core/Toolbox.h" |
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36 #include "../Core/OrthancException.h" |
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37 |
| 0 | 38 #include <string.h> |
| 39 #include <curl/curl.h> | |
| 40 | |
| 41 | |
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42 namespace Orthanc |
| 0 | 43 { |
| 44 struct HttpClient::PImpl | |
| 45 { | |
| 46 CURL* curl_; | |
| 47 struct curl_slist *postHeaders_; | |
| 48 }; | |
| 49 | |
| 50 | |
| 51 static CURLcode CheckCode(CURLcode code) | |
| 52 { | |
| 53 if (code != CURLE_OK) | |
| 54 { | |
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55 throw OrthancException("libCURL error: " + std::string(curl_easy_strerror(code))); |
| 0 | 56 } |
| 57 | |
| 58 return code; | |
| 59 } | |
| 60 | |
| 61 | |
| 62 static size_t CurlCallback(void *buffer, size_t size, size_t nmemb, void *payload) | |
| 63 { | |
| 64 std::string& target = *(static_cast<std::string*>(payload)); | |
| 65 | |
| 66 size_t length = size * nmemb; | |
| 67 if (length == 0) | |
| 68 return 0; | |
| 69 | |
| 70 size_t pos = target.size(); | |
| 71 | |
| 72 target.resize(pos + length); | |
| 73 memcpy(&target.at(pos), buffer, length); | |
| 74 | |
| 75 return length; | |
| 76 } | |
| 77 | |
| 78 | |
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79 void HttpClient::Setup() |
| 0 | 80 { |
| 81 pimpl_->postHeaders_ = NULL; | |
| 82 if ((pimpl_->postHeaders_ = curl_slist_append(pimpl_->postHeaders_, "Expect:")) == NULL) | |
| 83 { | |
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84 throw OrthancException(ErrorCode_NotEnoughMemory); |
| 0 | 85 } |
| 86 | |
| 87 pimpl_->curl_ = curl_easy_init(); | |
| 88 if (!pimpl_->curl_) | |
| 89 { | |
| 90 curl_slist_free_all(pimpl_->postHeaders_); | |
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91 throw OrthancException(ErrorCode_NotEnoughMemory); |
| 0 | 92 } |
| 93 | |
| 94 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_WRITEFUNCTION, &CurlCallback)); | |
| 95 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HEADER, 0)); | |
| 96 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_FOLLOWLOCATION, 1)); | |
| 97 | |
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98 #if ORTHANC_SSL_ENABLED == 1 |
| 26 | 99 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_SSL_VERIFYPEER, 0)); |
| 100 #endif | |
| 101 | |
| 456 | 102 // This fixes the "longjmp causes uninitialized stack frame" crash |
| 103 // that happens on modern Linux versions. | |
| 104 // http://stackoverflow.com/questions/9191668/error-longjmp-causes-uninitialized-stack-frame | |
| 105 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_NOSIGNAL, 1)); | |
| 106 | |
| 0 | 107 url_ = ""; |
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108 method_ = HttpMethod_Get; |
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109 lastStatus_ = HttpStatus_200_Ok; |
| 0 | 110 isVerbose_ = false; |
| 111 } | |
| 112 | |
| 113 | |
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114 HttpClient::HttpClient() : pimpl_(new PImpl) |
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115 { |
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116 Setup(); |
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117 } |
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118 |
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119 |
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120 HttpClient::HttpClient(const HttpClient& other) : pimpl_(new PImpl) |
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121 { |
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122 Setup(); |
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123 |
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124 if (other.IsVerbose()) |
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125 { |
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126 SetVerbose(true); |
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127 } |
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128 |
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129 if (other.credentials_.size() != 0) |
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130 { |
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131 credentials_ = other.credentials_; |
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132 } |
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133 } |
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134 |
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135 |
| 0 | 136 HttpClient::~HttpClient() |
| 137 { | |
| 138 curl_easy_cleanup(pimpl_->curl_); | |
| 139 curl_slist_free_all(pimpl_->postHeaders_); | |
| 140 } | |
| 141 | |
| 142 | |
| 143 void HttpClient::SetVerbose(bool isVerbose) | |
| 144 { | |
| 145 isVerbose_ = isVerbose; | |
| 146 | |
| 147 if (isVerbose_) | |
| 148 { | |
| 149 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_VERBOSE, 1)); | |
| 150 } | |
| 151 else | |
| 152 { | |
| 153 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_VERBOSE, 0)); | |
| 154 } | |
| 155 } | |
| 156 | |
| 157 | |
| 158 bool HttpClient::Apply(std::string& answer) | |
| 159 { | |
| 160 answer.clear(); | |
| 161 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_URL, url_.c_str())); | |
| 162 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_WRITEDATA, &answer)); | |
| 163 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPHEADER, NULL)); | |
| 164 | |
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165 if (credentials_.size() != 0) |
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166 { |
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167 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_USERPWD, credentials_.c_str())); |
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168 } |
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169 |
| 0 | 170 switch (method_) |
| 171 { | |
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172 case HttpMethod_Get: |
| 0 | 173 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPGET, 1L)); |
| 174 break; | |
| 175 | |
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176 case HttpMethod_Post: |
| 0 | 177 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POST, 1L)); |
| 178 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPHEADER, pimpl_->postHeaders_)); | |
| 179 | |
| 180 if (postData_.size() > 0) | |
| 181 { | |
| 182 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDS, postData_.c_str())); | |
| 183 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDSIZE, postData_.size())); | |
| 184 } | |
| 185 else | |
| 186 { | |
| 187 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDS, NULL)); | |
| 188 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDSIZE, 0)); | |
| 189 } | |
| 190 | |
| 191 break; | |
| 192 | |
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193 case HttpMethod_Delete: |
| 0 | 194 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_NOBODY, 1L)); |
| 195 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_CUSTOMREQUEST, "DELETE")); | |
| 196 break; | |
| 197 | |
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198 case HttpMethod_Put: |
| 0 | 199 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_PUT, 1L)); |
| 200 break; | |
| 201 | |
| 202 default: | |
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203 throw OrthancException(ErrorCode_InternalError); |
| 0 | 204 } |
| 205 | |
| 206 // Do the actual request | |
| 207 CheckCode(curl_easy_perform(pimpl_->curl_)); | |
| 208 | |
| 209 long status; | |
| 210 CheckCode(curl_easy_getinfo(pimpl_->curl_, CURLINFO_RESPONSE_CODE, &status)); | |
| 211 | |
| 212 if (status == 0) | |
| 213 { | |
| 214 // This corresponds to a call to an inexistent host | |
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215 lastStatus_ = HttpStatus_500_InternalServerError; |
| 0 | 216 } |
| 217 else | |
| 218 { | |
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219 lastStatus_ = static_cast<HttpStatus>(status); |
| 0 | 220 } |
| 221 | |
| 222 return (status >= 200 && status < 300); | |
| 223 } | |
| 224 | |
| 225 | |
| 226 bool HttpClient::Apply(Json::Value& answer) | |
| 227 { | |
| 228 std::string s; | |
| 229 if (Apply(s)) | |
| 230 { | |
| 231 Json::Reader reader; | |
| 232 return reader.parse(s, answer); | |
| 233 } | |
| 234 else | |
| 235 { | |
| 236 return false; | |
| 237 } | |
| 238 } | |
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239 |
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240 |
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241 void HttpClient::SetCredentials(const char* username, |
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242 const char* password) |
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243 { |
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244 credentials_ = std::string(username) + ":" + std::string(password); |
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245 } |
| 457 | 246 |
| 247 | |
| 248 void HttpClient::GlobalInitialize() | |
| 249 { | |
| 250 CheckCode(curl_global_init(CURL_GLOBAL_DEFAULT)); | |
| 251 } | |
| 252 | |
| 253 void HttpClient::GlobalFinalize() | |
| 254 { | |
| 255 curl_global_cleanup(); | |
| 256 } | |
| 0 | 257 } |