Mercurial > hg > orthanc
annotate Core/RestApi/RestApiOutput.cpp @ 1046:00f9f36bcd94
on-the-fly conversion of JSON to XML according to HTTP Accept
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 18 Jul 2014 17:15:34 +0200 |
| parents | 8d1845feb277 |
| children | 648bf1457113 |
| rev | line source |
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| 209 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 689 | 3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, |
| 209 | 4 * Belgium |
| 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 | |
| 330 | 36 #include <boost/lexical_cast.hpp> |
| 37 | |
| 211 | 38 #include "../OrthancException.h" |
| 39 | |
| 209 | 40 namespace Orthanc |
| 41 { | |
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42 RestApiOutput::RestApiOutput(HttpOutput& output) : |
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43 output_(output), |
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44 convertJsonToXml_(false) |
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45 { |
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46 alreadySent_ = false; |
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47 } |
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48 |
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49 RestApiOutput::~RestApiOutput() |
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50 { |
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51 if (!alreadySent_) |
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52 { |
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53 output_.SendHeader(HttpStatus_400_BadRequest); |
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54 } |
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55 } |
| 211 | 56 |
| 57 void RestApiOutput::CheckStatus() | |
| 58 { | |
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59 if (alreadySent_) |
| 211 | 60 { |
| 61 throw OrthancException(ErrorCode_BadSequenceOfCalls); | |
| 62 } | |
| 63 } | |
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64 |
| 209 | 65 void RestApiOutput::AnswerFile(HttpFileSender& sender) |
| 66 { | |
| 211 | 67 CheckStatus(); |
| 209 | 68 sender.Send(output_); |
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69 alreadySent_ = true; |
| 209 | 70 } |
| 71 | |
| 72 void RestApiOutput::AnswerJson(const Json::Value& value) | |
| 73 { | |
| 211 | 74 CheckStatus(); |
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75 |
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76 if (convertJsonToXml_) |
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77 { |
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78 #if ORTHANC_PUGIXML_ENABLED == 1 |
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79 std::string s; |
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80 Toolbox::JsonToXml(s, value); |
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81 output_.AnswerBufferWithContentType(s, "application/xml"); |
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82 #else |
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83 LOG(ERROR) << "Orthanc was compiled without XML support"; |
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84 throw OrthancException(ErrorCode_InternalError); |
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85 #endif |
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86 } |
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87 else |
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88 { |
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89 Json::StyledWriter writer; |
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90 std::string s = writer.write(value); |
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91 output_.AnswerBufferWithContentType(s, "application/json"); |
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92 } |
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93 |
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94 alreadySent_ = true; |
| 209 | 95 } |
| 96 | |
| 97 void RestApiOutput::AnswerBuffer(const std::string& buffer, | |
| 98 const std::string& contentType) | |
| 99 { | |
| 211 | 100 CheckStatus(); |
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101 output_.AnswerBufferWithContentType(buffer, contentType); |
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102 alreadySent_ = true; |
| 209 | 103 } |
| 104 | |
| 339 | 105 void RestApiOutput::AnswerBuffer(const void* buffer, |
| 106 size_t length, | |
| 107 const std::string& contentType) | |
| 108 { | |
| 109 CheckStatus(); | |
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110 output_.AnswerBufferWithContentType(buffer, length, contentType); |
| 339 | 111 alreadySent_ = true; |
| 112 } | |
| 113 | |
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114 void RestApiOutput::Redirect(const std::string& path) |
| 209 | 115 { |
| 211 | 116 CheckStatus(); |
| 209 | 117 output_.Redirect(path); |
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118 alreadySent_ = true; |
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119 } |
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120 |
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121 void RestApiOutput::SignalError(HttpStatus status) |
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122 { |
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123 if (status != HttpStatus_403_Forbidden && |
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124 status != HttpStatus_415_UnsupportedMediaType) |
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125 { |
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126 throw OrthancException("This HTTP status is not allowed in a REST API"); |
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127 } |
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128 |
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129 CheckStatus(); |
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130 output_.SendHeader(status); |
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131 alreadySent_ = true; |
| 209 | 132 } |
| 330 | 133 |
| 134 void RestApiOutput::SetCookie(const std::string& name, | |
| 135 const std::string& value, | |
| 136 unsigned int maxAge) | |
| 137 { | |
| 138 if (name.find(";") != std::string::npos || | |
| 139 name.find(" ") != std::string::npos || | |
| 140 value.find(";") != std::string::npos || | |
| 141 value.find(" ") != std::string::npos) | |
| 142 { | |
| 143 throw OrthancException(ErrorCode_NotImplemented); | |
| 144 } | |
| 145 | |
| 146 CheckStatus(); | |
| 147 | |
| 148 std::string v = value + ";path=/"; | |
| 149 | |
| 150 if (maxAge != 0) | |
| 151 { | |
| 152 v += ";max-age=" + boost::lexical_cast<std::string>(maxAge); | |
| 153 } | |
| 154 | |
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155 output_.SetCookie(name, v); |
| 330 | 156 } |
| 157 | |
| 158 void RestApiOutput::ResetCookie(const std::string& name) | |
| 159 { | |
| 160 // This marks the cookie to be deleted by the browser in 1 second, | |
| 161 // and before it actually gets deleted, its value is set to the | |
| 162 // empty string | |
| 163 SetCookie(name, "", 1); | |
| 164 } | |
| 209 | 165 } |