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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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136
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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0
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "HttpOutput.h"
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34
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35 #include <vector>
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36 #include <stdio.h>
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37 #include <boost/lexical_cast.hpp>
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38 #include "../OrthancException.h"
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39 #include "../Toolbox.h"
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40 #include "../../OrthancCppClient/HttpException.h"
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41
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42 namespace Orthanc
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43 {
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44 void HttpOutput::SendString(const std::string& s)
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45 {
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46 if (s.size() > 0)
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47 Send(&s[0], s.size());
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48 }
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49
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50 void HttpOutput::SendOkHeader(const std::string& contentType)
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51 {
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52 SendOkHeader(contentType.c_str(), false, 0);
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53 }
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54
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55 void HttpOutput::SendOkHeader()
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56 {
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57 SendOkHeader(NULL, false, 0);
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58 }
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59
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60 void HttpOutput::SendOkHeader(uint64_t contentLength)
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61 {
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62 SendOkHeader(NULL, true, contentLength);
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63 }
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64
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65 void HttpOutput::SendOkHeader(const std::string& contentType,
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66 uint64_t contentLength)
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67 {
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68 SendOkHeader(contentType.c_str(), true, contentLength);
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69 }
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70
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71
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72 void HttpOutput::SendOkHeader(const char* contentType,
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73 bool hasContentLength,
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8
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74 uint64_t contentLength)
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75 {
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76 std::string s = "HTTP/1.1 200 OK\r\n";
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77
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78 if (contentType)
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79 {
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80 s += "Content-Type: " + std::string(contentType) + "\r\n";
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81 }
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82
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83 if (hasContentLength)
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84 {
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85 s += "Content-Length: " + boost::lexical_cast<std::string>(contentLength) + "\r\n";
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86 }
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87
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88 s += "\r\n";
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89
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90 Send(&s[0], s.size());
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91 }
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92
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93
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94 void HttpOutput::SendMethodNotAllowedError(const std::string& allowed)
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95 {
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96 std::string s =
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97 "HTTP/1.1 405 " + std::string(HttpException::GetDescription(Orthanc_HttpStatus_405_MethodNotAllowed)) +
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98 "\r\nAllow: " + allowed +
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99 "\r\n\r\n";
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100 Send(&s[0], s.size());
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101 }
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102
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103
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104 void HttpOutput::SendHeader(Orthanc_HttpStatus status)
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105 {
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106 if (status == Orthanc_HttpStatus_200_Ok ||
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107 status == Orthanc_HttpStatus_405_MethodNotAllowed)
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108 {
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109 throw OrthancException("Please use the dedicated methods to this HTTP status code in HttpOutput");
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110 }
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111
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112 SendHeaderInternal(status);
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113 }
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114
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115
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116 void HttpOutput::SendHeaderInternal(Orthanc_HttpStatus status)
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117 {
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118 std::string s = "HTTP/1.1 " +
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119 boost::lexical_cast<std::string>(status) +
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120 " " + std::string(HttpException::GetDescription(status)) +
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121 "\r\n\r\n";
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122 Send(&s[0], s.size());
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123 }
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124
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125
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126 void HttpOutput::AnswerBufferWithContentType(const std::string& buffer,
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127 const std::string& contentType)
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128 {
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129 SendOkHeader(contentType.c_str(), true, buffer.size());
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130 SendString(buffer);
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131 }
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132
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133
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134 void HttpOutput::AnswerBufferWithContentType(const void* buffer,
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135 size_t size,
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136 const std::string& contentType)
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137 {
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138 SendOkHeader(contentType.c_str(), true, size);
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139 Send(buffer, size);
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140 }
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141
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142
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143 void HttpOutput::AnswerFileWithContentType(const std::string& path,
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144 const std::string& contentType)
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145 {
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146 uint64_t fileSize = Toolbox::GetFileSize(path);
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147
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148 FILE* fp = fopen(path.c_str(), "rb");
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149 if (!fp)
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150 {
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151 SendHeaderInternal(Orthanc_HttpStatus_500_InternalServerError);
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152 return;
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153 }
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154
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155 SendOkHeader(contentType.c_str(), true, fileSize);
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156
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157 std::vector<uint8_t> buffer(1024 * 1024); // Chunks of 1MB
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158
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159 for (;;)
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160 {
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161 size_t nbytes = fread(&buffer[0], 1, buffer.size(), fp);
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162 if (nbytes == 0)
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163 {
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164 break;
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165 }
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166 else
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167 {
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168 Send(&buffer[0], nbytes);
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169 }
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170 }
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171
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172 fclose(fp);
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173 }
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174
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175
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176 void HttpOutput::AnswerFileAutodetectContentType(const std::string& path)
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177 {
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178 AnswerFileWithContentType(path, Toolbox::AutodetectMimeType(path));
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179 }
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180
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181
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182 void HttpOutput::AnswerFile(const FileStorage& storage,
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183 const std::string& uuid,
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184 const std::string& contentType)
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185 {
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186 boost::filesystem::path p(storage.GetPath(uuid));
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187 AnswerFileWithContentType(p.string(), contentType);
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188 }
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189
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190
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191
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192 void HttpOutput::Redirect(const std::string& path)
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193 {
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194 std::string s =
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195 "HTTP/1.1 301 " + std::string(HttpException::GetDescription(Orthanc_HttpStatus_301_MovedPermanently)) +
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196 "\r\nLocation: " + path +
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197 "\r\n\r\n";
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198 Send(&s[0], s.size());
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199 }
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200 }
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