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annotate OrthancFramework/Sources/HttpServer/IWebDavBucket.cpp @ 5640:f7adfb22e20e

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updated copyright, as Orthanc Team now replaces Osimis
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 30 May 2024 21:19:57 +0200
parents 48b8dae6dc77
children
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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8 *
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9 * This program is free software: you can redistribute it and/or
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10 * modify it under the terms of the GNU Lesser General Public License
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11 * as published by the Free Software Foundation, either version 3 of
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12 * the License, or (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful, but
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 * Lesser General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU Lesser General Public
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20 * License along with this program. If not, see
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21 * <http://www.gnu.org/licenses/>.
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22 **/
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23
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24
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25 #include "../PrecompiledHeaders.h"
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26 #include "IWebDavBucket.h"
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27
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28 #include "HttpOutput.h"
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29 #include "../OrthancException.h"
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30 #include "../Toolbox.h"
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31
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32
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33 static boost::posix_time::ptime GetNow()
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34 {
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35 return boost::posix_time::second_clock::universal_time();
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36 }
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37
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38
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39 static std::string AddTrailingSlash(const std::string& s)
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40 {
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41 if (s.empty() ||
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42 s[s.size() - 1] != '/')
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43 {
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44 return s + '/';
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45 }
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46 else
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47 {
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48 return s;
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49 }
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50 }
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51
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52
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53 namespace Orthanc
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54 {
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55 IWebDavBucket::Resource::Resource(const std::string& displayName) :
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56 displayName_(displayName),
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57 hasModificationTime_(false),
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58 creationTime_(GetNow()),
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59 modificationTime_(GetNow())
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60 {
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61 if (displayName.empty() ||
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62 displayName.find('/') != std::string::npos ||
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63 displayName.find('\\') != std::string::npos ||
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64 displayName.find('\0') != std::string::npos)
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65 {
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66 throw OrthancException(ErrorCode_ParameterOutOfRange,
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67 "Bad resource name for WebDAV: " + displayName);
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68 }
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69 }
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70
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71
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72 void IWebDavBucket::Resource::SetCreationTime(const boost::posix_time::ptime& t)
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73 {
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74 if (t.is_special())
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75 {
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76 throw OrthancException(ErrorCode_ParameterOutOfRange, "Not a valid date-time");
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77 }
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78 else
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79 {
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80 creationTime_ = t;
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81
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82 if (!hasModificationTime_)
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83 {
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84 modificationTime_ = t;
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85 }
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86 }
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87 }
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88
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89
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90 void IWebDavBucket::Resource::SetModificationTime(const boost::posix_time::ptime& t)
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91 {
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92 if (t.is_special())
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93 {
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94 throw OrthancException(ErrorCode_ParameterOutOfRange, "Not a valid date-time");
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95 }
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96 else
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97 {
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98 modificationTime_ = t;
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99 hasModificationTime_ = true;
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100 }
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101 }
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102
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103
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104 static void FormatInternal(pugi::xml_node& node,
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105 const std::string& href,
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106 const std::string& displayName,
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107 const boost::posix_time::ptime& creationTime,
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108 const boost::posix_time::ptime& modificationTime)
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109 {
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110 node.set_name("D:response");
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111
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112 node.append_child("D:href").append_child(pugi::node_pcdata).set_value(href.c_str());
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113
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114 pugi::xml_node propstat = node.append_child("D:propstat");
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115
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116 static const HttpStatus status = HttpStatus_200_Ok;
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117 std::string s = ("HTTP/1.1 " + boost::lexical_cast<std::string>(status) + " " +
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118 std::string(EnumerationToString(status)));
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119 propstat.append_child("D:status").append_child(pugi::node_pcdata).set_value(s.c_str());
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120
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121 pugi::xml_node prop = propstat.append_child("D:prop");
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122 prop.append_child("D:displayname").append_child(pugi::node_pcdata).set_value(displayName.c_str());
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123
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124 // IMPORTANT: Adding the "Z" suffix is mandatory on Windows >= 7 (it indicates UTC)
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125 assert(!creationTime.is_special());
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126 s = boost::posix_time::to_iso_extended_string(creationTime) + "Z";
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127 prop.append_child("D:creationdate").append_child(pugi::node_pcdata).set_value(s.c_str());
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128
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129 assert(!modificationTime.is_special());
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130 s = boost::posix_time::to_iso_extended_string(modificationTime) + "Z";
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131 prop.append_child("D:getlastmodified").append_child(pugi::node_pcdata).set_value(s.c_str());
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132
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133 #if 0
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134 // Maybe used by davfs2
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135 prop.append_child("D:quota-available-bytes");
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136 prop.append_child("D:quota-used-bytes");
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137 #endif
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138
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139 #if 0
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140 prop.append_child("D:lockdiscovery");
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141 pugi::xml_node lock = prop.append_child("D:supportedlock");
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142
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143 pugi::xml_node lockentry = lock.append_child("D:lockentry");
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144 lockentry.append_child("D:lockscope").append_child("D:exclusive");
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145 lockentry.append_child("D:locktype").append_child("D:write");
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146
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147 lockentry = lock.append_child("D:lockentry");
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148 lockentry.append_child("D:lockscope").append_child("D:shared");
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149 lockentry.append_child("D:locktype").append_child("D:write");
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150 #endif
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151 }
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152
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153
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154 IWebDavBucket::File::File(const std::string& displayName) :
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155 Resource(displayName),
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156 contentLength_(0),
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157 mime_(MimeType_Binary)
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158 {
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159 }
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160
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161
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162 void IWebDavBucket::File::Format(pugi::xml_node& node,
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163 const std::string& parentPath) const
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164 {
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165 std::string href;
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166 Toolbox::UriEncode(href, AddTrailingSlash(parentPath) + GetDisplayName());
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167 FormatInternal(node, href, GetDisplayName(), GetCreationTime(), GetModificationTime());
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168
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169 pugi::xml_node prop = node.first_element_by_path("D:propstat/D:prop");
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170 prop.append_child("D:resourcetype");
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171
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172 std::string s = boost::lexical_cast<std::string>(contentLength_);
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173 prop.append_child("D:getcontentlength").append_child(pugi::node_pcdata).set_value(s.c_str());
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174
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175 s = EnumerationToString(mime_);
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176 prop.append_child("D:getcontenttype").append_child(pugi::node_pcdata).set_value(s.c_str());
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177 }
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178
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179
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180 void IWebDavBucket::Folder::Format(pugi::xml_node& node,
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181 const std::string& parentPath) const
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182 {
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183 std::string href;
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184 Toolbox::UriEncode(href, AddTrailingSlash(parentPath) + GetDisplayName());
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185 FormatInternal(node, href, GetDisplayName(), GetCreationTime(), GetModificationTime());
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186
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187 pugi::xml_node prop = node.first_element_by_path("D:propstat/D:prop");
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188 prop.append_child("D:resourcetype").append_child("D:collection");
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189
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190 //prop.append_child("D:getcontenttype").append_child(pugi::node_pcdata).set_value("httpd/unix-directory");
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191 }
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192
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193
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194 IWebDavBucket::Collection::~Collection()
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195 {
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196 for (std::list<Resource*>::iterator it = resources_.begin(); it != resources_.end(); ++it)
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197 {
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198 assert(*it != NULL);
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199 delete(*it);
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200 }
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201 }
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202
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203
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204 void IWebDavBucket::Collection::AddResource(Resource* resource) // Takes ownership
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205 {
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206 if (resource == NULL)
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207 {
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208 throw OrthancException(ErrorCode_NullPointer);
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209 }
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210 else
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211 {
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212 resources_.push_back(resource);
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213 }
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214 }
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215
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216
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217 void IWebDavBucket::Collection::ListDisplayNames(std::set<std::string>& target)
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218 {
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219 for (std::list<Resource*>::iterator it = resources_.begin(); it != resources_.end(); ++it)
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220 {
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221 assert(*it != NULL);
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222 target.insert((*it)->GetDisplayName());
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223 }
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224 }
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225
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226
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227 void IWebDavBucket::Collection::Format(std::string& target,
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228 const std::string& parentPath) const
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229 {
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230 pugi::xml_document doc;
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231
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232 pugi::xml_node root = doc.append_child("D:multistatus");
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233 root.append_attribute("xmlns:D").set_value("DAV:");
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234
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235 {
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236 pugi::xml_node self = root.append_child();
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237
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238 std::vector<std::string> tokens;
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239 Toolbox::SplitUriComponents(tokens, parentPath);
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240
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241 std::string folder;
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242 if (!tokens.empty())
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243 {
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244 folder = tokens.back();
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245 }
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246
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247 std::string href;
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248 Toolbox::UriEncode(href, Toolbox::FlattenUri(tokens) + "/");
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249
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250 boost::posix_time::ptime now = GetNow();
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251 FormatInternal(self, href, folder, now, now);
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252
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253 pugi::xml_node prop = self.first_element_by_path("D:propstat/D:prop");
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254 prop.append_child("D:resourcetype").append_child("D:collection");
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255 }
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256
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257 for (std::list<Resource*>::const_iterator
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258 it = resources_.begin(); it != resources_.end(); ++it)
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259 {
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260 assert(*it != NULL);
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261 pugi::xml_node n = root.append_child();
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262 (*it)->Format(n, parentPath);
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263 }
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264
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265 pugi::xml_node decl = doc.prepend_child(pugi::node_declaration);
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266 decl.append_attribute("version").set_value("1.0");
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267 decl.append_attribute("encoding").set_value("UTF-8");
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268
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269 Toolbox::XmlToString(target, doc);
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270 }
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271
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272
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273 void IWebDavBucket::AnswerFakedProppatch(HttpOutput& output,
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274 const std::string& uri)
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275 {
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276 /**
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277 * This is a fake implementation. The goal is to make happy the
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278 * WebDAV clients that set properties (such as Windows >= 7).
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279 **/
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280
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281 pugi::xml_document doc;
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282
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283 pugi::xml_node root = doc.append_child("D:multistatus");
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284 root.append_attribute("xmlns:D").set_value("DAV:");
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285
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286 pugi::xml_node response = root.append_child("D:response");
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287 response.append_child("D:href").append_child(pugi::node_pcdata).set_value(uri.c_str());
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288
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289 response.append_child("D:propstat");
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290
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291 pugi::xml_node decl = doc.prepend_child(pugi::node_declaration);
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292 decl.append_attribute("version").set_value("1.0");
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293 decl.append_attribute("encoding").set_value("UTF-8");
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294
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295 std::string s;
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296 Toolbox::XmlToString(s, doc);
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297
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298 output.AddHeader("Content-Type", "application/xml");
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299 output.SendStatus(HttpStatus_207_MultiStatus, s);
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300 }
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301
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302
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303 void IWebDavBucket::AnswerFakedLock(HttpOutput& output,
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304 const std::string& uri)
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305 {
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306 /**
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307 * This is a fake implementation. No lock is actually
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308 * created. The goal is to make happy the WebDAV clients
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309 * that use locking (such as Windows >= 7).
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310 **/
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311
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312 pugi::xml_document doc;
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313
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314 pugi::xml_node root = doc.append_child("D:prop");
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315 root.append_attribute("xmlns:D").set_value("DAV:");
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316
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317 pugi::xml_node activelock = root.append_child("D:lockdiscovery").append_child("D:activelock");
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318 activelock.append_child("D:locktype").append_child("D:write");
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319 activelock.append_child("D:lockscope").append_child("D:exclusive");
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320 activelock.append_child("D:depth").append_child(pugi::node_pcdata).set_value("0");
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321 activelock.append_child("D:timeout").append_child(pugi::node_pcdata).set_value("Second-3599");
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322
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323 activelock.append_child("D:lockroot").append_child("D:href")
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324 .append_child(pugi::node_pcdata).set_value(uri.c_str());
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325 activelock.append_child("D:owner");
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326
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327 std::string token = Toolbox::GenerateUuid();
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328 boost::erase_all(token, "-");
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329 token = "opaquelocktoken:0x" + token;
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330
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331 activelock.append_child("D:locktoken").append_child("D:href").
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332 append_child(pugi::node_pcdata).set_value(token.c_str());
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333
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334 pugi::xml_node decl = doc.prepend_child(pugi::node_declaration);
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335 decl.append_attribute("version").set_value("1.0");
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336 decl.append_attribute("encoding").set_value("UTF-8");
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337
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338 std::string s;
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339 Toolbox::XmlToString(s, doc);
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340
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341 output.AddHeader("Lock-Token", token); // Necessary for davfs2
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342 output.AddHeader("Content-Type", "application/xml");
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343 output.SendStatus(HttpStatus_201_Created, s);
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344 }
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345
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346
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347 void IWebDavBucket::AnswerFakedUnlock(HttpOutput& output)
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348 {
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349 output.SendStatus(HttpStatus_204_NoContent);
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350 }
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351 }