Mercurial > hg > orthanc
annotate Core/RestApi/RestApiOutput.cpp @ 1514:d73a2178b319
support of deflate and gzip content-types
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 10 Aug 2015 16:43:59 +0200 |
| parents | 7962563129c9 |
| children | c94353fbd4e9 |
| rev | line source |
|---|---|
| 209 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
|
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
| 209 | 5 * |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
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33 #include "../PrecompiledHeaders.h" |
| 209 | 34 #include "RestApiOutput.h" |
| 35 | |
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36 #include "../Logging.h" |
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37 #include "../OrthancException.h" |
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38 |
| 330 | 39 #include <boost/lexical_cast.hpp> |
| 40 | |
| 211 | 41 |
| 209 | 42 namespace Orthanc |
| 43 { | |
| 1368 | 44 RestApiOutput::RestApiOutput(HttpOutput& output, |
| 45 HttpMethod method) : | |
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46 output_(output), |
| 1368 | 47 method_(method), |
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48 allowDeflateCompression_(false), |
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49 allowGzipCompression_(false), |
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50 convertJsonToXml_(false) |
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51 { |
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52 alreadySent_ = false; |
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53 } |
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54 |
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55 RestApiOutput::~RestApiOutput() |
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56 { |
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57 } |
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58 |
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59 void RestApiOutput::Finalize() |
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60 { |
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61 if (!alreadySent_) |
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62 { |
| 1368 | 63 if (method_ == HttpMethod_Post) |
| 64 { | |
| 65 output_.SendStatus(HttpStatus_400_BadRequest); | |
| 66 } | |
| 67 else | |
| 68 { | |
| 69 output_.SendStatus(HttpStatus_404_NotFound); | |
| 70 } | |
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71 } |
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72 } |
| 211 | 73 |
| 74 void RestApiOutput::CheckStatus() | |
| 75 { | |
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76 if (alreadySent_) |
| 211 | 77 { |
| 78 throw OrthancException(ErrorCode_BadSequenceOfCalls); | |
| 79 } | |
| 80 } | |
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81 |
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82 |
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83 HttpCompression RestApiOutput::GetPreferredCompression() const |
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84 { |
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85 if (allowGzipCompression_) |
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86 { |
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87 return HttpCompression_Gzip; |
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88 } |
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89 else if (allowDeflateCompression_) |
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90 { |
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91 return HttpCompression_Deflate; |
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92 } |
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93 else |
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94 { |
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95 return HttpCompression_None; |
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96 } |
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97 } |
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98 |
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99 |
| 209 | 100 void RestApiOutput::AnswerFile(HttpFileSender& sender) |
| 101 { | |
| 211 | 102 CheckStatus(); |
| 209 | 103 sender.Send(output_); |
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104 alreadySent_ = true; |
| 209 | 105 } |
| 106 | |
| 107 void RestApiOutput::AnswerJson(const Json::Value& value) | |
| 108 { | |
| 211 | 109 CheckStatus(); |
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110 |
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111 if (convertJsonToXml_) |
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112 { |
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113 #if ORTHANC_PUGIXML_ENABLED == 1 |
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114 std::string s; |
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115 Toolbox::JsonToXml(s, value); |
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116 output_.SetContentType("application/xml"); |
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117 output_.SendBody(s, GetPreferredCompression()); |
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118 #else |
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119 LOG(ERROR) << "Orthanc was compiled without XML support"; |
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120 throw OrthancException(ErrorCode_InternalError); |
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121 #endif |
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122 } |
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123 else |
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124 { |
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125 Json::StyledWriter writer; |
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126 output_.SetContentType("application/json"); |
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127 output_.SendBody(writer.write(value), GetPreferredCompression()); |
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128 } |
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129 |
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130 alreadySent_ = true; |
| 209 | 131 } |
| 132 | |
| 133 void RestApiOutput::AnswerBuffer(const std::string& buffer, | |
| 134 const std::string& contentType) | |
| 135 { | |
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136 AnswerBuffer(buffer.size() == 0 ? NULL : buffer.c_str(), |
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137 buffer.size(), contentType); |
| 209 | 138 } |
| 139 | |
| 339 | 140 void RestApiOutput::AnswerBuffer(const void* buffer, |
| 141 size_t length, | |
| 142 const std::string& contentType) | |
| 143 { | |
| 144 CheckStatus(); | |
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145 output_.SetContentType(contentType.c_str()); |
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146 output_.SendBody(buffer, length, GetPreferredCompression()); |
| 339 | 147 alreadySent_ = true; |
| 148 } | |
| 149 | |
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150 void RestApiOutput::Redirect(const std::string& path) |
| 209 | 151 { |
| 211 | 152 CheckStatus(); |
| 209 | 153 output_.Redirect(path); |
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154 alreadySent_ = true; |
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155 } |
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156 |
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157 void RestApiOutput::SignalError(HttpStatus status) |
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158 { |
| 1194 | 159 if (status != HttpStatus_400_BadRequest && |
| 160 status != HttpStatus_403_Forbidden && | |
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161 status != HttpStatus_500_InternalServerError && |
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162 status != HttpStatus_415_UnsupportedMediaType) |
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163 { |
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164 throw OrthancException("This HTTP status is not allowed in a REST API"); |
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165 } |
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166 |
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167 CheckStatus(); |
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168 output_.SendStatus(status); |
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169 alreadySent_ = true; |
| 209 | 170 } |
| 330 | 171 |
| 172 void RestApiOutput::SetCookie(const std::string& name, | |
| 173 const std::string& value, | |
| 174 unsigned int maxAge) | |
| 175 { | |
| 176 if (name.find(";") != std::string::npos || | |
| 177 name.find(" ") != std::string::npos || | |
| 178 value.find(";") != std::string::npos || | |
| 179 value.find(" ") != std::string::npos) | |
| 180 { | |
| 181 throw OrthancException(ErrorCode_NotImplemented); | |
| 182 } | |
| 183 | |
| 184 CheckStatus(); | |
| 185 | |
| 186 std::string v = value + ";path=/"; | |
| 187 | |
| 188 if (maxAge != 0) | |
| 189 { | |
| 190 v += ";max-age=" + boost::lexical_cast<std::string>(maxAge); | |
| 191 } | |
| 192 | |
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193 output_.SetCookie(name, v); |
| 330 | 194 } |
| 195 | |
| 196 void RestApiOutput::ResetCookie(const std::string& name) | |
| 197 { | |
| 198 // This marks the cookie to be deleted by the browser in 1 second, | |
| 199 // and before it actually gets deleted, its value is set to the | |
| 200 // empty string | |
| 201 SetCookie(name, "", 1); | |
| 202 } | |
| 209 | 203 } |