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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2014 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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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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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 #pragma once
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34
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35 #include "RestApi.h"
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36
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37 #include <list>
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38
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39 namespace Orthanc
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40 {
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41 class RestApiHierarchy
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42 {
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43 private:
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44 struct Handlers
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45 {
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46 typedef std::list<RestApi::GetHandler> GetHandlers;
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47 typedef std::list<RestApi::PostHandler> PostHandlers;
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48 typedef std::list<RestApi::PutHandler> PutHandlers;
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49 typedef std::list<RestApi::DeleteHandler> DeleteHandlers;
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50
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51 GetHandlers getHandlers_;
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52 PostHandlers postHandlers_;
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53 PutHandlers putHandlers_;
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54 DeleteHandlers deleteHandlers_;
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55
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56 bool HasGet() const
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57 {
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58 return getHandlers_.size() > 0;
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59 }
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60
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61 void Register(RestApi::GetHandler handler)
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62 {
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63 getHandlers_.push_back(handler);
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64 }
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65
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66 void Register(RestApi::PutHandler handler)
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67 {
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68 putHandlers_.push_back(handler);
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69 }
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70
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71 void Register(RestApi::PostHandler handler)
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72 {
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73 postHandlers_.push_back(handler);
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74 }
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75
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76 void Register(RestApi::DeleteHandler handler)
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77 {
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78 deleteHandlers_.push_back(handler);
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79 }
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80
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81 bool IsEmpty() const;
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82 };
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83
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84
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85 typedef std::map<std::string, RestApiHierarchy*> Children;
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86 typedef bool (*ResourceCallback) (Handlers& handlers,
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87 const UriComponents& uri,
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88 const RestApiPath::Components& components,
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89 const UriComponents& trailing,
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90 void* call);
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91
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92 Handlers handlers_;
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93 Children children_;
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94 Children wildcardChildren_;
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95 Handlers universalHandlers_;
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96
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97
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98 static RestApiHierarchy& AddChild(Children& children,
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99 const std::string& name);
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100
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101 static void DeleteChildren(Children& children);
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102
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103 template <typename Handler>
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104 void RegisterInternal(const RestApiPath& path,
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105 Handler handler,
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106 size_t level);
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107
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108 bool LookupHandler(RestApiPath::Components& components,
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109 const UriComponents& uri,
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110 ResourceCallback callback,
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111 size_t level,
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112 void* call);
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113
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114 bool GetDirectory(Json::Value& result,
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115 const UriComponents& uri,
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116 size_t level);
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117
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118 static bool GetCallback(Handlers& handlers,
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119 const UriComponents& uri,
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120 const RestApiPath::Components& components,
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121 const UriComponents& trailing,
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122 void* call);
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123
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124 static bool PostCallback(Handlers& handlers,
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125 const UriComponents& uri,
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126 const RestApiPath::Components& components,
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127 const UriComponents& trailing,
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128 void* call);
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129
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130 static bool PutCallback(Handlers& handlers,
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131 const UriComponents& uri,
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132 const RestApiPath::Components& components,
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133 const UriComponents& trailing,
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134 void* call);
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135
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136 static bool DeleteCallback(Handlers& handlers,
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137 const UriComponents& uri,
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138 const RestApiPath::Components& components,
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139 const UriComponents& trailing,
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140 void* call);
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141
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142
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143 public:
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144 ~RestApiHierarchy();
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145
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146 void Register(const RestApiPath& path,
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147 RestApi::GetHandler handler);
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148
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149 void Register(const RestApiPath& path,
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150 RestApi::PutHandler handler);
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151
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152 void Register(const RestApiPath& path,
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153 RestApi::PostHandler handler);
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154
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155 void Register(const RestApiPath& path,
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156 RestApi::DeleteHandler handler);
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157
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158 void CreateSiteMap(Json::Value& target) const;
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159
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160 bool GetDirectory(Json::Value& result,
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161 const UriComponents& uri)
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162 {
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163 return GetDirectory(result, uri, 0);
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164 }
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165
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166 bool Handle(RestApi::GetCall& call,
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167 const UriComponents& uri);
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168
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169 bool Handle(RestApi::PutCall& call,
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170 const UriComponents& uri);
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171
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172 bool Handle(RestApi::PostCall& call,
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173 const UriComponents& uri);
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174
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175 bool Handle(RestApi::DeleteCall& call,
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176 const UriComponents& uri);
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177 };
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178 }
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