Mercurial > hg > orthanc
annotate OrthancCppClient/HttpClient.cpp @ 472:722b56b99093
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 15 Jul 2013 13:50:36 +0200 |
| parents | a6fe16a31615 |
| children | c9a5d72f8481 |
| rev | line source |
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| 0 | 1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
| 400 | 3 * Copyright (C) 2012-2013 Medical Physics Department, CHU of Liege, |
| 0 | 4 * Belgium |
| 5 * | |
| 6 * Permission is hereby granted, free of charge, to any person | |
| 7 * obtaining a copy of this software and associated documentation | |
| 8 * files (the "Software"), to deal in the Software without | |
| 9 * restriction, including without limitation the rights to use, copy, | |
| 10 * modify, merge, publish, distribute, sublicense, and/or sell copies | |
| 11 * of the Software, and to permit persons to whom the Software is | |
| 12 * furnished to do so, subject to the following conditions: | |
| 13 * | |
| 14 * The above copyright notice and this permission notice shall be | |
| 15 * included in all copies or substantial portions of the Software. | |
| 16 * | |
| 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| 20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
| 21 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
| 22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
| 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
| 24 * SOFTWARE. | |
| 25 **/ | |
| 26 | |
| 27 | |
| 28 #include "HttpClient.h" | |
| 29 | |
| 30 #include <string.h> | |
| 31 #include <curl/curl.h> | |
| 32 | |
| 33 | |
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34 namespace Orthanc |
| 0 | 35 { |
| 36 struct HttpClient::PImpl | |
| 37 { | |
| 38 CURL* curl_; | |
| 39 struct curl_slist *postHeaders_; | |
| 40 }; | |
| 41 | |
| 42 | |
| 43 static CURLcode CheckCode(CURLcode code) | |
| 44 { | |
| 45 if (code != CURLE_OK) | |
| 46 { | |
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47 //printf("ICI: %s\n", curl_easy_strerror(code)); |
| 0 | 48 throw HttpException("CURL: " + std::string(curl_easy_strerror(code))); |
| 49 } | |
| 50 | |
| 51 return code; | |
| 52 } | |
| 53 | |
| 54 | |
| 55 static size_t CurlCallback(void *buffer, size_t size, size_t nmemb, void *payload) | |
| 56 { | |
| 57 std::string& target = *(static_cast<std::string*>(payload)); | |
| 58 | |
| 59 size_t length = size * nmemb; | |
| 60 if (length == 0) | |
| 61 return 0; | |
| 62 | |
| 63 size_t pos = target.size(); | |
| 64 | |
| 65 target.resize(pos + length); | |
| 66 memcpy(&target.at(pos), buffer, length); | |
| 67 | |
| 68 return length; | |
| 69 } | |
| 70 | |
| 71 | |
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72 void HttpClient::Setup() |
| 0 | 73 { |
| 74 pimpl_->postHeaders_ = NULL; | |
| 75 if ((pimpl_->postHeaders_ = curl_slist_append(pimpl_->postHeaders_, "Expect:")) == NULL) | |
| 76 { | |
| 77 throw HttpException("HttpClient: Not enough memory"); | |
| 78 } | |
| 79 | |
| 80 pimpl_->curl_ = curl_easy_init(); | |
| 81 if (!pimpl_->curl_) | |
| 82 { | |
| 83 curl_slist_free_all(pimpl_->postHeaders_); | |
| 84 throw HttpException("HttpClient: Not enough memory"); | |
| 85 } | |
| 86 | |
| 87 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_WRITEFUNCTION, &CurlCallback)); | |
| 88 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HEADER, 0)); | |
| 89 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_FOLLOWLOCATION, 1)); | |
| 90 | |
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91 #if ORTHANC_SSL_ENABLED == 1 |
| 26 | 92 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_SSL_VERIFYPEER, 0)); |
| 93 #endif | |
| 94 | |
| 456 | 95 // This fixes the "longjmp causes uninitialized stack frame" crash |
| 96 // that happens on modern Linux versions. | |
| 97 // http://stackoverflow.com/questions/9191668/error-longjmp-causes-uninitialized-stack-frame | |
| 98 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_NOSIGNAL, 1)); | |
| 99 | |
| 0 | 100 url_ = ""; |
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101 method_ = Orthanc_HttpMethod_Get; |
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102 lastStatus_ = Orthanc_HttpStatus_200_Ok; |
| 0 | 103 isVerbose_ = false; |
| 104 } | |
| 105 | |
| 106 | |
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107 HttpClient::HttpClient() : pimpl_(new PImpl) |
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108 { |
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109 Setup(); |
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110 } |
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111 |
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112 |
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113 HttpClient::HttpClient(const HttpClient& other) : pimpl_(new PImpl) |
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114 { |
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115 Setup(); |
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116 |
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117 if (other.IsVerbose()) |
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118 { |
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119 SetVerbose(true); |
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120 } |
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121 |
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122 if (other.credentials_.size() != 0) |
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123 { |
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124 credentials_ = other.credentials_; |
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125 } |
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126 } |
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127 |
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128 |
| 0 | 129 HttpClient::~HttpClient() |
| 130 { | |
| 131 curl_easy_cleanup(pimpl_->curl_); | |
| 132 curl_slist_free_all(pimpl_->postHeaders_); | |
| 133 } | |
| 134 | |
| 135 | |
| 136 void HttpClient::SetVerbose(bool isVerbose) | |
| 137 { | |
| 138 isVerbose_ = isVerbose; | |
| 139 | |
| 140 if (isVerbose_) | |
| 141 { | |
| 142 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_VERBOSE, 1)); | |
| 143 } | |
| 144 else | |
| 145 { | |
| 146 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_VERBOSE, 0)); | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 | |
| 151 bool HttpClient::Apply(std::string& answer) | |
| 152 { | |
| 153 answer.clear(); | |
| 154 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_URL, url_.c_str())); | |
| 155 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_WRITEDATA, &answer)); | |
| 156 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPHEADER, NULL)); | |
| 157 | |
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158 if (credentials_.size() != 0) |
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159 { |
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160 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_USERPWD, credentials_.c_str())); |
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161 } |
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162 |
| 0 | 163 switch (method_) |
| 164 { | |
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165 case Orthanc_HttpMethod_Get: |
| 0 | 166 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPGET, 1L)); |
| 167 break; | |
| 168 | |
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169 case Orthanc_HttpMethod_Post: |
| 0 | 170 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POST, 1L)); |
| 171 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPHEADER, pimpl_->postHeaders_)); | |
| 172 | |
| 173 if (postData_.size() > 0) | |
| 174 { | |
| 175 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDS, postData_.c_str())); | |
| 176 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDSIZE, postData_.size())); | |
| 177 } | |
| 178 else | |
| 179 { | |
| 180 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDS, NULL)); | |
| 181 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDSIZE, 0)); | |
| 182 } | |
| 183 | |
| 184 break; | |
| 185 | |
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186 case Orthanc_HttpMethod_Delete: |
| 0 | 187 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_NOBODY, 1L)); |
| 188 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_CUSTOMREQUEST, "DELETE")); | |
| 189 break; | |
| 190 | |
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191 case Orthanc_HttpMethod_Put: |
| 0 | 192 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_PUT, 1L)); |
| 193 break; | |
| 194 | |
| 195 default: | |
| 196 throw HttpException("HttpClient: Internal error"); | |
| 197 } | |
| 198 | |
| 199 // Do the actual request | |
| 200 CheckCode(curl_easy_perform(pimpl_->curl_)); | |
| 201 | |
| 202 long status; | |
| 203 CheckCode(curl_easy_getinfo(pimpl_->curl_, CURLINFO_RESPONSE_CODE, &status)); | |
| 204 | |
| 205 if (status == 0) | |
| 206 { | |
| 207 // This corresponds to a call to an inexistent host | |
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208 lastStatus_ = Orthanc_HttpStatus_500_InternalServerError; |
| 0 | 209 } |
| 210 else | |
| 211 { | |
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212 lastStatus_ = static_cast<Orthanc_HttpStatus>(status); |
| 0 | 213 } |
| 214 | |
| 215 return (status >= 200 && status < 300); | |
| 216 } | |
| 217 | |
| 218 | |
| 219 bool HttpClient::Apply(Json::Value& answer) | |
| 220 { | |
| 221 std::string s; | |
| 222 if (Apply(s)) | |
| 223 { | |
| 224 Json::Reader reader; | |
| 225 return reader.parse(s, answer); | |
| 226 } | |
| 227 else | |
| 228 { | |
| 229 return false; | |
| 230 } | |
| 231 } | |
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232 |
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233 |
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234 void HttpClient::SetCredentials(const char* username, |
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235 const char* password) |
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236 { |
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237 credentials_ = std::string(username) + ":" + std::string(password); |
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238 } |
| 457 | 239 |
| 240 | |
| 241 void HttpClient::GlobalInitialize() | |
| 242 { | |
| 243 CheckCode(curl_global_init(CURL_GLOBAL_DEFAULT)); | |
| 244 } | |
| 245 | |
| 246 void HttpClient::GlobalFinalize() | |
| 247 { | |
| 248 curl_global_cleanup(); | |
| 249 } | |
| 0 | 250 } |