Mercurial > hg > orthanc
annotate Core/HttpServer/HttpOutput.cpp @ 207:7f74209ea0f8
RestApi
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 28 Nov 2012 16:23:11 +0100 |
| parents | 93e1b0e3b83a |
| children | 1ac3aacd10a5 |
| rev | line source |
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| 0 | 1 /** |
| 59 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
| 0 | 3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege, |
| 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. | |
| 136 | 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. | |
| 0 | 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 | |
| 33 #include "HttpOutput.h" | |
| 34 | |
| 35 #include <vector> | |
| 36 #include <stdio.h> | |
| 37 #include <boost/lexical_cast.hpp> | |
| 59 | 38 #include "../OrthancException.h" |
| 0 | 39 #include "../Toolbox.h" |
| 59 | 40 #include "../../OrthancCppClient/HttpException.h" |
| 0 | 41 |
| 59 | 42 namespace Orthanc |
| 0 | 43 { |
| 44 void HttpOutput::SendString(const std::string& s) | |
| 45 { | |
| 46 if (s.size() > 0) | |
| 47 Send(&s[0], s.size()); | |
| 48 } | |
| 49 | |
| 50 void HttpOutput::SendOkHeader(const std::string& contentType) | |
| 51 { | |
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52 SendOkHeader(contentType.c_str(), false, 0, NULL); |
| 0 | 53 } |
| 54 | |
| 55 void HttpOutput::SendOkHeader(const char* contentType, | |
| 56 bool hasContentLength, | |
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57 uint64_t contentLength, |
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58 const char* contentFilename) |
| 0 | 59 { |
| 60 std::string s = "HTTP/1.1 200 OK\r\n"; | |
| 61 | |
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62 if (contentType && contentType[0] != '\0') |
| 0 | 63 { |
| 64 s += "Content-Type: " + std::string(contentType) + "\r\n"; | |
| 65 } | |
| 66 | |
| 67 if (hasContentLength) | |
| 68 { | |
| 69 s += "Content-Length: " + boost::lexical_cast<std::string>(contentLength) + "\r\n"; | |
| 70 } | |
| 71 | |
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72 if (contentFilename && contentFilename[0] != '\0') |
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73 { |
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74 s += "Content-Disposition: attachment; filename=\"" + std::string(contentFilename) + "\"\r\n"; |
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75 } |
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76 |
| 0 | 77 s += "\r\n"; |
| 78 | |
| 79 Send(&s[0], s.size()); | |
| 80 } | |
| 81 | |
| 82 | |
| 207 | 83 void HttpOutput::SendCustomOkHeader(const std::string& customHeader) |
| 84 { | |
| 85 std::string s = "HTTP/1.1 200 OK\r\n" + customHeader + "\r\n"; | |
| 86 Send(&s[0], s.size()); | |
| 87 } | |
| 88 | |
| 89 | |
| 0 | 90 void HttpOutput::SendMethodNotAllowedError(const std::string& allowed) |
| 91 { | |
| 92 std::string s = | |
| 59 | 93 "HTTP/1.1 405 " + std::string(HttpException::GetDescription(Orthanc_HttpStatus_405_MethodNotAllowed)) + |
| 0 | 94 "\r\nAllow: " + allowed + |
| 95 "\r\n\r\n"; | |
| 96 Send(&s[0], s.size()); | |
| 97 } | |
| 98 | |
| 99 | |
| 59 | 100 void HttpOutput::SendHeader(Orthanc_HttpStatus status) |
| 0 | 101 { |
| 59 | 102 if (status == Orthanc_HttpStatus_200_Ok || |
| 103 status == Orthanc_HttpStatus_405_MethodNotAllowed) | |
| 0 | 104 { |
| 59 | 105 throw OrthancException("Please use the dedicated methods to this HTTP status code in HttpOutput"); |
| 0 | 106 } |
| 107 | |
| 108 SendHeaderInternal(status); | |
| 109 } | |
| 110 | |
| 111 | |
| 59 | 112 void HttpOutput::SendHeaderInternal(Orthanc_HttpStatus status) |
| 0 | 113 { |
| 114 std::string s = "HTTP/1.1 " + | |
| 115 boost::lexical_cast<std::string>(status) + | |
| 116 " " + std::string(HttpException::GetDescription(status)) + | |
| 117 "\r\n\r\n"; | |
| 118 Send(&s[0], s.size()); | |
| 119 } | |
| 120 | |
| 121 | |
| 122 void HttpOutput::AnswerBufferWithContentType(const std::string& buffer, | |
| 123 const std::string& contentType) | |
| 124 { | |
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125 SendOkHeader(contentType.c_str(), true, buffer.size(), NULL); |
| 0 | 126 SendString(buffer); |
| 127 } | |
| 128 | |
| 129 | |
| 130 void HttpOutput::AnswerBufferWithContentType(const void* buffer, | |
| 131 size_t size, | |
| 132 const std::string& contentType) | |
| 133 { | |
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134 SendOkHeader(contentType.c_str(), true, size, NULL); |
| 0 | 135 Send(buffer, size); |
| 136 } | |
| 137 | |
| 138 | |
| 139 void HttpOutput::AnswerFileWithContentType(const std::string& path, | |
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140 const std::string& contentType, |
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141 const char* filename) |
| 0 | 142 { |
| 143 uint64_t fileSize = Toolbox::GetFileSize(path); | |
| 144 | |
| 145 FILE* fp = fopen(path.c_str(), "rb"); | |
| 146 if (!fp) | |
| 147 { | |
| 59 | 148 SendHeaderInternal(Orthanc_HttpStatus_500_InternalServerError); |
| 0 | 149 return; |
| 150 } | |
| 151 | |
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152 SendOkHeader(contentType.c_str(), true, fileSize, filename); |
| 0 | 153 |
| 154 std::vector<uint8_t> buffer(1024 * 1024); // Chunks of 1MB | |
| 155 | |
| 156 for (;;) | |
| 157 { | |
| 158 size_t nbytes = fread(&buffer[0], 1, buffer.size(), fp); | |
| 159 if (nbytes == 0) | |
| 160 { | |
| 161 break; | |
| 162 } | |
| 163 else | |
| 164 { | |
| 165 Send(&buffer[0], nbytes); | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 fclose(fp); | |
| 170 } | |
| 171 | |
| 172 | |
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173 void HttpOutput::AnswerFileAutodetectContentType(const std::string& path, |
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174 const char* filename) |
| 0 | 175 { |
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176 AnswerFileWithContentType(path, Toolbox::AutodetectMimeType(path), filename); |
| 0 | 177 } |
| 178 | |
| 179 | |
| 180 void HttpOutput::AnswerFile(const FileStorage& storage, | |
| 181 const std::string& uuid, | |
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182 const std::string& contentType, |
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183 const char* filename) |
| 0 | 184 { |
| 185 boost::filesystem::path p(storage.GetPath(uuid)); | |
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186 AnswerFileWithContentType(p.string(), contentType, filename); |
| 0 | 187 } |
| 188 | |
| 189 | |
| 190 | |
| 191 void HttpOutput::Redirect(const std::string& path) | |
| 192 { | |
| 193 std::string s = | |
| 59 | 194 "HTTP/1.1 301 " + std::string(HttpException::GetDescription(Orthanc_HttpStatus_301_MovedPermanently)) + |
| 0 | 195 "\r\nLocation: " + path + |
| 196 "\r\n\r\n"; | |
| 197 Send(&s[0], s.size()); | |
| 198 } | |
| 199 } |