resource/include/OCSerialization.h

   1 //******************************************************************
   2 //
   3 // Copyright 2014 Intel Mobile Communications GmbH All Rights Reserved.
   4 //
   5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   6 //
   7 // Licensed under the Apache License, Version 2.0 (the "License");
   8 // you may not use this file except in compliance with the License.
   9 // You may obtain a copy of the License at
  10 //
  11 //      http://www.apache.org/licenses/LICENSE-2.0
  12 //
  13 // Unless required by applicable law or agreed to in writing, software
  14 // distributed under the License is distributed on an "AS IS" BASIS,
  15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 // See the License for the specific language governing permissions and
  17 // limitations under the License.
  18 //
  19 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  20
  21 #include <cereal/cereal.hpp>
  22 #include <cereal/types/memory.hpp>
  23 #include <cereal/types/vector.hpp>
  24 #include <cereal/archives/json.hpp>
  25
  26 #include <StringConstants.h>
  27
  28 namespace OC
  29 {
  30     class ListenOCContainer
  31     {
  32         private:
  33         enum class OCSecureType
  34         {
  35             IPv4Secure,
  36             IPv4
  37         };
  38
  39         class ListenResourceContainer
  40         {
  41             class ListenResourcePropertiesContainer
  42             {
  43                 friend class cereal::access;
  44                 friend class ListenResourceContainer;
  45
  46                 template<class Archive>
  47                 void serialize(Archive& ar)
  48                 {
  49                     try
  50                     {
  51                         m_observable=false;
  52                         int obsTemp;
  53                         ar(cereal::make_nvp(OC::Key::OBSERVABLEKEY, obsTemp));
  54                         m_observable = obsTemp != 0;
  55                     }
  56                     catch(cereal::Exception&)
  57                     {
  58                         // we swallow this exception, since it means the key
  59                         // doesn't exist, allowing these to be optional
  60                         ar.setNextName(nullptr);
  61                     }
  62
  63                     try
  64                     {
  65                         m_secure = false;
  66                         int secureTemp;
  67                         ar(cereal::make_nvp(OC::Key::SECUREKEY, secureTemp));
  68                         m_secure = secureTemp != 0;
  69
  70                         m_port = -1;
  71                         ar(cereal::make_nvp(OC::Key::PORTKEY, m_port));
  72                     }
  73                     catch(cereal::Exception&)
  74                     {
  75                         ar.setNextName(nullptr);
  76                     }
  77
  78                     try
  79                     {
  80                         ar(cereal::make_nvp(OC::Key::RESOURCETYPESKEY,m_resourceTypes));
  81                     }
  82                     catch(cereal::Exception&)
  83                     {
  84                         ar.setNextName(nullptr);
  85                     }
  86                     try
  87                     {
  88                         ar(cereal::make_nvp(OC::Key::INTERFACESKEY, m_interfaces));
  89                     }
  90                     catch(cereal::Exception&)
  91                     {
  92                         ar.setNextName(nullptr);
  93                     }
  94                 }
  95
  96                 bool m_observable;
  97                 std::vector<std::string> m_resourceTypes;
  98                 std::vector<std::string> m_interfaces;
  99                 bool m_secure;
 100                 int m_port;
 101             };
 102
 103             public:
 104             ListenResourceContainer() : m_loaded(false)
 105             {}
 106
 107             private:
 108             friend class cereal::access;
 109             friend class ListenOCContainer;
 110
 111             template <class Archive>
 112             void serialize(Archive& ar)
 113             {
 114                 try
 115                 {
 116                     ar(cereal::make_nvp(OC::Key::URIKEY, m_uri));
 117                     m_loaded=true;
 118                 }
 119                 catch(cereal::Exception&)
 120                 {
 121                     ar.setNextName(nullptr);
 122                 }
 123                 try
 124                 {
 125                     ar(cereal::make_nvp(OC::Key::SERVERIDKEY, m_serverId));
 126                     m_loaded=true;
 127                 }
 128                 catch(cereal::Exception&)
 129                 {
 130                     ar.setNextName(nullptr);
 131                 }
 132                 try
 133                 {
 134                     ar(cereal::make_nvp(OC::Key::PROPERTYKEY, m_props));
 135                     m_loaded=true;
 136                 }
 137                 catch(cereal::Exception&)
 138                 {
 139                     ar.setNextName(nullptr);
 140                 }
 141             }
 142
 143
 144             std::string m_uri;
 145             std::string m_serverId;
 146             bool m_loaded;
 147             ListenResourcePropertiesContainer m_props;
 148
 149             bool loaded() const
 150             {
 151                 return m_loaded;
 152             }
 153
 154             bool observable() const
 155             {
 156                 return m_props.m_observable;
 157             }
 158
 159             OCSecureType secureType() const
 160             {
 161                 return m_props.m_secure?OCSecureType::IPv4Secure :OCSecureType::IPv4;
 162             }
 163
 164             int port() const
 165             {
 166                 return m_props.m_port;
 167             }
 168
 169             std::vector<std::string> resourceTypes() const
 170             {
 171                 return m_props.m_resourceTypes;
 172             }
 173
 174             std::vector<std::string> interfaces() const
 175             {
 176                 return m_props.m_interfaces;
 177             }
 178         };
 179
 180         private:
 181             friend class cereal::access;
 182             template <class Archive>
 183             void serialize(Archive& ar)
 184             {
 185                 std::vector<ListenResourceContainer> resources;
 186                 ar(resources);
 187             }
 188         public:
 189             ListenOCContainer(std::weak_ptr<IClientWrapper> cw, const OCDevAddr& address,
 190                     OCConnectivityType connectivityType, std::stringstream& json):
 191                 m_clientWrapper(cw), m_address(address), m_connectivityType(connectivityType)
 192             {
 193                 LoadFromJson(json);
 194             }
 195
 196             const std::vector<std::shared_ptr<OCResource>>& Resources() const
 197             {
 198                 return m_resources;
 199             }
 200
 201         private:
 202             std::string ConvertOCAddrToString(OCSecureType sec, int secureport)
 203             {
 204                 uint16_t port;
 205                 std::ostringstream os;
 206
 207                 if(sec== OCSecureType::IPv4)
 208                 {
 209                     os<<"coap://";
 210                 }
 211                 else if(sec == OCSecureType::IPv4Secure)
 212                 {
 213                     os<<"coaps://";
 214                 }
 215                 else
 216                 {
 217                     oclog() << "ConvertOCAddrToString():  invalid SecureType"<<std::flush;
 218                     throw ResourceInitException(false, false, false, false, false, true);
 219                 }
 220
 221                 uint8_t a;
 222                 uint8_t b;
 223                 uint8_t c;
 224                 uint8_t d;
 225                 if(OCDevAddrToIPv4Addr(&m_address, &a, &b, &c, &d) != 0)
 226                 {
 227                     oclog() << "ConvertOCAddrToString(): Invalid Ip"
 228                             << std::flush;
 229                     throw ResourceInitException(false, false, false, false, false, true);
 230                 }
 231
 232                 os<<static_cast<int>(a)<<"."<<static_cast<int>(b)
 233                         <<"."<<static_cast<int>(c)<<"."<<static_cast<int>(d);
 234
 235                 if(sec == OCSecureType::IPv4Secure && secureport>0 && secureport<=65535)
 236                 {
 237                     port = static_cast<uint16_t>(secureport);
 238                 }
 239                 else if(sec == OCSecureType::IPv4 && 0==OCDevAddrToPort(&m_address, &port))
 240                 {
 241                     // nothing to do, this is a successful case
 242                 }
 243                 else
 244                 {
 245                     oclog() << "ConvertOCAddrToString() : Invalid Port"
 246                             <<std::flush;
 247                     throw ResourceInitException(false, false, false, false, true, false);
 248                 }
 249
 250                 os <<":"<< static_cast<int>(port);
 251
 252                 return os.str();
 253             }
 254
 255             void LoadFromJson(std::stringstream& json)
 256             {
 257                 cereal::JSONInputArchive archive(json);
 258
 259                 std::vector<ListenResourceContainer> resources;
 260                 archive(cereal::make_nvp(OC::Key::OCKEY, resources));
 261
 262                 m_resources.clear();
 263
 264                 for(const auto& res : resources)
 265                 {
 266                     try
 267                     {
 268                         if(res.loaded())
 269                         {
 270                             m_resources.push_back(std::shared_ptr<OCResource>(
 271                                 new OCResource(m_clientWrapper,
 272                                     ConvertOCAddrToString(res.secureType(),res.port()),
 273                                     res.m_uri, res.m_serverId, m_connectivityType, res.observable(),
 274                                     res.resourceTypes(), res.interfaces())));
 275                         }
 276
 277                     }
 278                     catch(ResourceInitException& e)
 279                     {
 280                         oclog() << "listenCallback(): failed to create resource: " << e.what()
 281                                 << std::flush;
 282                     }
 283                 }
 284             }
 285             std::vector<std::shared_ptr<OC::OCResource>> m_resources;
 286             std::weak_ptr<IClientWrapper> m_clientWrapper;
 287             OCDevAddr m_address;
 288             OCConnectivityType m_connectivityType;
 289     };
 290 }
 291