Mercurial > hg > orthanc
annotate Core/HttpClient.cpp @ 486:49aa17c03cd3
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 16 Jul 2013 14:24:39 +0200 |
parents | 6f8ae46ed90e |
children | ff34c51cd3dd |
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 { |
477 | 255 return EnumerationToString(lastStatus_); |
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256 } |
0 | 257 } |