Mercurial > hg > orthanc
annotate OrthancCppClient/HttpClient.cpp @ 475:72cca077abf8
removal of HttpException
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 15 Jul 2013 17:32:47 +0200 |
| parents | c9a5d72f8481 |
| children |
| 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 | |
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30 #include "../Core/Toolbox.h" |
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31 #include "../Core/OrthancException.h" |
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32 |
| 0 | 33 #include <string.h> |
| 34 #include <curl/curl.h> | |
| 35 | |
| 36 | |
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37 namespace Orthanc |
| 0 | 38 { |
| 39 struct HttpClient::PImpl | |
| 40 { | |
| 41 CURL* curl_; | |
| 42 struct curl_slist *postHeaders_; | |
| 43 }; | |
| 44 | |
| 45 | |
| 46 static CURLcode CheckCode(CURLcode code) | |
| 47 { | |
| 48 if (code != CURLE_OK) | |
| 49 { | |
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50 throw OrthancException("libCURL error: " + std::string(curl_easy_strerror(code))); |
| 0 | 51 } |
| 52 | |
| 53 return code; | |
| 54 } | |
| 55 | |
| 56 | |
| 57 static size_t CurlCallback(void *buffer, size_t size, size_t nmemb, void *payload) | |
| 58 { | |
| 59 std::string& target = *(static_cast<std::string*>(payload)); | |
| 60 | |
| 61 size_t length = size * nmemb; | |
| 62 if (length == 0) | |
| 63 return 0; | |
| 64 | |
| 65 size_t pos = target.size(); | |
| 66 | |
| 67 target.resize(pos + length); | |
| 68 memcpy(&target.at(pos), buffer, length); | |
| 69 | |
| 70 return length; | |
| 71 } | |
| 72 | |
| 73 | |
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74 void HttpClient::Setup() |
| 0 | 75 { |
| 76 pimpl_->postHeaders_ = NULL; | |
| 77 if ((pimpl_->postHeaders_ = curl_slist_append(pimpl_->postHeaders_, "Expect:")) == NULL) | |
| 78 { | |
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79 throw OrthancException(ErrorCode_NotEnoughMemory); |
| 0 | 80 } |
| 81 | |
| 82 pimpl_->curl_ = curl_easy_init(); | |
| 83 if (!pimpl_->curl_) | |
| 84 { | |
| 85 curl_slist_free_all(pimpl_->postHeaders_); | |
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86 throw OrthancException(ErrorCode_NotEnoughMemory); |
| 0 | 87 } |
| 88 | |
| 89 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_WRITEFUNCTION, &CurlCallback)); | |
| 90 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HEADER, 0)); | |
| 91 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_FOLLOWLOCATION, 1)); | |
| 92 | |
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93 #if ORTHANC_SSL_ENABLED == 1 |
| 26 | 94 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_SSL_VERIFYPEER, 0)); |
| 95 #endif | |
| 96 | |
| 456 | 97 // This fixes the "longjmp causes uninitialized stack frame" crash |
| 98 // that happens on modern Linux versions. | |
| 99 // http://stackoverflow.com/questions/9191668/error-longjmp-causes-uninitialized-stack-frame | |
| 100 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_NOSIGNAL, 1)); | |
| 101 | |
| 0 | 102 url_ = ""; |
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103 method_ = HttpMethod_Get; |
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104 lastStatus_ = HttpStatus_200_Ok; |
| 0 | 105 isVerbose_ = false; |
| 106 } | |
| 107 | |
| 108 | |
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109 HttpClient::HttpClient() : pimpl_(new PImpl) |
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110 { |
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111 Setup(); |
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112 } |
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113 |
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114 |
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115 HttpClient::HttpClient(const HttpClient& other) : pimpl_(new PImpl) |
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116 { |
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117 Setup(); |
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118 |
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119 if (other.IsVerbose()) |
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120 { |
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121 SetVerbose(true); |
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122 } |
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123 |
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124 if (other.credentials_.size() != 0) |
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125 { |
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126 credentials_ = other.credentials_; |
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127 } |
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128 } |
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129 |
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130 |
| 0 | 131 HttpClient::~HttpClient() |
| 132 { | |
| 133 curl_easy_cleanup(pimpl_->curl_); | |
| 134 curl_slist_free_all(pimpl_->postHeaders_); | |
| 135 } | |
| 136 | |
| 137 | |
| 138 void HttpClient::SetVerbose(bool isVerbose) | |
| 139 { | |
| 140 isVerbose_ = isVerbose; | |
| 141 | |
| 142 if (isVerbose_) | |
| 143 { | |
| 144 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_VERBOSE, 1)); | |
| 145 } | |
| 146 else | |
| 147 { | |
| 148 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_VERBOSE, 0)); | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 | |
| 153 bool HttpClient::Apply(std::string& answer) | |
| 154 { | |
| 155 answer.clear(); | |
| 156 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_URL, url_.c_str())); | |
| 157 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_WRITEDATA, &answer)); | |
| 158 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPHEADER, NULL)); | |
| 159 | |
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160 if (credentials_.size() != 0) |
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161 { |
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162 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_USERPWD, credentials_.c_str())); |
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163 } |
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164 |
| 0 | 165 switch (method_) |
| 166 { | |
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167 case HttpMethod_Get: |
| 0 | 168 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPGET, 1L)); |
| 169 break; | |
| 170 | |
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171 case HttpMethod_Post: |
| 0 | 172 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POST, 1L)); |
| 173 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_HTTPHEADER, pimpl_->postHeaders_)); | |
| 174 | |
| 175 if (postData_.size() > 0) | |
| 176 { | |
| 177 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDS, postData_.c_str())); | |
| 178 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDSIZE, postData_.size())); | |
| 179 } | |
| 180 else | |
| 181 { | |
| 182 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDS, NULL)); | |
| 183 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_POSTFIELDSIZE, 0)); | |
| 184 } | |
| 185 | |
| 186 break; | |
| 187 | |
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188 case HttpMethod_Delete: |
| 0 | 189 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_NOBODY, 1L)); |
| 190 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_CUSTOMREQUEST, "DELETE")); | |
| 191 break; | |
| 192 | |
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193 case HttpMethod_Put: |
| 0 | 194 CheckCode(curl_easy_setopt(pimpl_->curl_, CURLOPT_PUT, 1L)); |
| 195 break; | |
| 196 | |
| 197 default: | |
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198 throw OrthancException(ErrorCode_InternalError); |
| 0 | 199 } |
| 200 | |
| 201 // Do the actual request | |
| 202 CheckCode(curl_easy_perform(pimpl_->curl_)); | |
| 203 | |
| 204 long status; | |
| 205 CheckCode(curl_easy_getinfo(pimpl_->curl_, CURLINFO_RESPONSE_CODE, &status)); | |
| 206 | |
| 207 if (status == 0) | |
| 208 { | |
| 209 // This corresponds to a call to an inexistent host | |
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210 lastStatus_ = HttpStatus_500_InternalServerError; |
| 0 | 211 } |
| 212 else | |
| 213 { | |
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214 lastStatus_ = static_cast<HttpStatus>(status); |
| 0 | 215 } |
| 216 | |
| 217 return (status >= 200 && status < 300); | |
| 218 } | |
| 219 | |
| 220 | |
| 221 bool HttpClient::Apply(Json::Value& answer) | |
| 222 { | |
| 223 std::string s; | |
| 224 if (Apply(s)) | |
| 225 { | |
| 226 Json::Reader reader; | |
| 227 return reader.parse(s, answer); | |
| 228 } | |
| 229 else | |
| 230 { | |
| 231 return false; | |
| 232 } | |
| 233 } | |
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234 |
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235 |
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236 void HttpClient::SetCredentials(const char* username, |
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237 const char* password) |
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238 { |
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239 credentials_ = std::string(username) + ":" + std::string(password); |
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240 } |
| 457 | 241 |
| 242 | |
| 243 void HttpClient::GlobalInitialize() | |
| 244 { | |
| 245 CheckCode(curl_global_init(CURL_GLOBAL_DEFAULT)); | |
| 246 } | |
| 247 | |
| 248 void HttpClient::GlobalFinalize() | |
| 249 { | |
| 250 curl_global_cleanup(); | |
| 251 } | |
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252 |
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253 const char* HttpClient::GetLastStatusText() const |
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254 { |
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255 return Toolbox::ToString(lastStatus_); |
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256 } |
| 0 | 257 } |