service/easy-setup/mediator/richsdk/src/EnrolleeSecurity.cpp

   1 //******************************************************************
   2 //
   3 // Copyright 2015 Samsung Electronics 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 "base64.h"
  22
  23 #include "EnrolleeSecurity.h"
  24 #include "oxmjustworks.h"
  25 #include "oxmrandompin.h"
  26 #include "RemoteEnrolleeResource.h"
  27 #include "logger.h"
  28 #include "ESException.h"
  29 #include "oic_malloc.h"
  30 #include "oic_string.h"
  31
  32 namespace OIC
  33 {
  34     namespace Service
  35     {
  36         #define MAX_PERMISSION_LENGTH (5)
  37         #define CREATE (1)
  38         #define READ (2)
  39         #define UPDATE (4)
  40         #define DELETE (8)
  41         #define NOTIFY (16)
  42         #define DASH '-'
  43
  44         //TODO : Currently discovery timeout for owned and unowned devices is fixed as 5
  45         // The value should be accepted from the application as a parameter during ocplatform
  46         // config call
  47 #define ES_SEC_DISCOVERY_TIMEOUT 5
  48
  49         EnrolleeSecurity::EnrolleeSecurity(
  50         std::shared_ptr< RemoteEnrolleeResource > remoteEnrolleeResource,
  51         std::string secDbPath)
  52         {
  53             m_enrolleeSecState = EnrolleeSecState::ES_SEC_UNKNOWN;
  54             m_remoteEnrolleeResource = remoteEnrolleeResource;
  55         }
  56
  57         ESResult EnrolleeSecurity::registerCallbackHandler(EnrolleeSecStatusCb enrolleeSecStatusCb,
  58                 SecurityPinCb securityPinCb, SecProvisioningDbPathCb secProvisioningDbPathCb)
  59
  60         {
  61             m_enrolleeSecStatusCb = enrolleeSecStatusCb;
  62             m_securityPinCb = securityPinCb;
  63             m_secProvisioningDbPathCb = secProvisioningDbPathCb;
  64
  65             return ES_ERROR;
  66         }
  67
  68         std::shared_ptr< OC::OCSecureResource > EnrolleeSecurity::getEnrollee(DeviceList_t &list)
  69         {
  70             for (unsigned int i = 0; i < list.size(); i++)
  71             {
  72                 OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "Device %d ID %s ", i + 1,
  73                         list[i]->getDeviceID().c_str());
  74                 OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "From IP :%s", list[i]->getDevAddr().c_str());
  75
  76                 //Always return the first element of the unOwned devices. This is considering that Mediator is
  77                 // always connected with only one Enrollee for which ownership transfer is being performed.
  78                 // Incase of multiple Enrollee devices connected to the Mediator via any OnBoarding method (SoftAp
  79                 // for example), the Enrollee devices will be provisioned in the first come first serve basis in the order
  80                 // returned by the security layer.
  81                 return list[i];
  82             }
  83         }
  84
  85         void EnrolleeSecurity::convertUUIDToString(OicUuid_t uuid, std::string& uuidString)
  86         {
  87             char base64Buff[B64ENCODE_OUT_SAFESIZE(sizeof(((OicUuid_t*) 0)->id)) + 1] =
  88             { 0, };
  89             uint32_t outLen = 0;
  90             B64Result b64Ret = B64_OK;
  91             std::ostringstream deviceId("");
  92
  93             b64Ret = b64Encode(uuid.id, sizeof(uuid.id),
  94                     base64Buff, sizeof(base64Buff), &outLen);
  95
  96             if (B64_OK == b64Ret)
  97             {
  98                 deviceId << base64Buff;
  99             }
 100             uuidString =  deviceId.str();
 101         }
 102
 103         void EnrolleeSecurity::ownershipTransferCb(OC::PMResultList_t *result, int hasError)
 104         {
 105             if (hasError)
 106             {
 107                 OIC_LOG(ERROR, ENROLEE_SECURITY_TAG,"Error!!! in OwnershipTransfer");
 108
 109                 std::shared_ptr< SecProvisioningResult > securityProvisioningStatus = nullptr;
 110                 std::string uuid;
 111                 convertUUIDToString(result->at(0).deviceId, uuid);
 112                 securityProvisioningStatus = std::make_shared< SecProvisioningResult >(uuid,
 113                         ES_ERROR);
 114
 115                 m_enrolleeSecStatusCb(securityProvisioningStatus);
 116                 return;
 117             }
 118             else
 119             {
 120                 OIC_LOG(DEBUG, ENROLEE_SECURITY_TAG, "ownershipTransferCb : Received provisioning results: ");
 121                 for (unsigned int i = 0; i < result->size(); i++)
 122                 {
 123                     OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "Result is = %d for device",result->at(i).res);
 124                     std::string uuid;
 125                     convertUUIDToString(result->at(0).deviceId, uuid);
 126
 127                     OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "UUID : %s",uuid.c_str());
 128                     std::shared_ptr< SecProvisioningResult > securityProvisioningStatus = nullptr;
 129                     securityProvisioningStatus = std::make_shared< SecProvisioningResult >(uuid,
 130                             ES_OK);
 131
 132                     m_enrolleeSecStatusCb(securityProvisioningStatus);
 133                     return;
 134                 }
 135
 136                 delete result;
 137             }
 138         }
 139
 140         EasySetupState EnrolleeSecurity::performOwnershipTransfer()
 141         {
 142             EasySetupState ownershipStatus = DEVICE_NOT_OWNED;
 143
 144             OC::DeviceList_t pUnownedDevList, pOwnedDevList;
 145
 146             pOwnedDevList.clear();
 147             pUnownedDevList.clear();
 148
 149             OCStackResult result;
 150
 151             //Developer note : Always test the mediator and enrollee applications on different devices. Running
 152             // Mediator and Enrollee in same device will result in returning the same device as already owned.
 153             /*result = OCSecure::discoverOwnedDevices(ES_SEC_DISCOVERY_TIMEOUT,
 154                     pOwnedDevList);
 155             if (result != OC_STACK_OK)
 156             {
 157                 OIC_LOG(ERROR, ENROLEE_SECURITY_TAG, "Owned Discovery failed.");
 158                 ownershipStatus = DEVICE_NOT_OWNED;
 159                 //Throw exception
 160                 throw ESPlatformException(result);
 161                 return ownershipStatus;
 162             }
 163             else if (pOwnedDevList.size())
 164             {
 165                 OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "Found owned devices. Count =%d",
 166                         pOwnedDevList.size());
 167                 std::shared_ptr< OC::OCSecureResource > ownedDevice = getEnrollee(pOwnedDevList);
 168                 if (ownedDevice)
 169                 {
 170                     ownershipStatus = DEVICE_OWNED;
 171                     return ownershipStatus;
 172                 }
 173             }
 174             else
 175             {
 176                 OIC_LOG(ERROR, ENROLEE_SECURITY_TAG, "No owned devices found.");
 177                 ownershipStatus = DEVICE_NOT_OWNED;
 178             }*/
 179
 180             result = OCSecure::discoverUnownedDevices(ES_SEC_DISCOVERY_TIMEOUT, pUnownedDevList);
 181             if (result != OC_STACK_OK)
 182             {
 183                 OIC_LOG(ERROR, ENROLEE_SECURITY_TAG, "UnOwned Discovery failed.");
 184                 ownershipStatus = DEVICE_NOT_OWNED;
 185                 //Throw exception
 186                 throw ESPlatformException(result);
 187                 return ownershipStatus;
 188             }
 189             else if (pUnownedDevList.size())
 190             {
 191                 OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "Found Unowned devices. Count =%d",
 192                         pUnownedDevList.size());
 193
 194                 m_unownedDevice = getEnrollee(pUnownedDevList);
 195                 if (m_unownedDevice)
 196                 {
 197                     OTMCallbackData_t justWorksCBData;
 198                     justWorksCBData.loadSecretCB = LoadSecretJustWorksCallback;
 199                     justWorksCBData.createSecureSessionCB = CreateSecureSessionJustWorksCallback;
 200                     justWorksCBData.createSelectOxmPayloadCB = CreateJustWorksSelectOxmPayload;
 201                     justWorksCBData.createOwnerTransferPayloadCB =
 202                             CreateJustWorksOwnerTransferPayload;
 203                     OCSecure::setOwnerTransferCallbackData(OIC_JUST_WORKS, &justWorksCBData, NULL);
 204
 205                     OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "Transfering ownership for : %s ",
 206                             m_unownedDevice->getDeviceID().c_str());
 207
 208                     OC::ResultCallBack ownershipTransferCb = std::bind(
 209                             &EnrolleeSecurity::ownershipTransferCb, this, std::placeholders::_1,
 210                             std::placeholders::_2);
 211
 212                     if (m_unownedDevice->doOwnershipTransfer(ownershipTransferCb) != OC_STACK_OK)
 213                     {
 214                         OIC_LOG(ERROR, ENROLEE_SECURITY_TAG, "OwnershipTransferCallback is failed");
 215                         ownershipStatus = DEVICE_NOT_OWNED;
 216                         return ownershipStatus;
 217                     }
 218                     ownershipStatus = DEVICE_NOT_OWNED;
 219                 }
 220             }
 221             else
 222             {
 223                 OIC_LOG(ERROR, ENROLEE_SECURITY_TAG, "No unSecure devices found.");
 224                 ownershipStatus = DEVICE_NOT_OWNED;
 225
 226                 return ownershipStatus;
 227             }
 228
 229             return ownershipStatus;
 230         }
 231     }
 232 }