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 "EnrolleeResource.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< EnrolleeResource > EnrolleeResource,
  51         std::string secDbPath)
  52         {
  53             m_enrolleeSecState = EnrolleeSecState::ES_SEC_UNKNOWN;
  54             m_EnrolleeResource = EnrolleeResource;
  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             OIC_LOG(ERROR, ENROLEE_SECURITY_TAG,"Error!!! DeviceList_t is NULL");
  84             return NULL;
  85         }
  86
  87         void EnrolleeSecurity::convertUUIDToString(OicUuid_t uuid, std::string& uuidString)
  88         {
  89             char base64Buff[B64ENCODE_OUT_SAFESIZE(sizeof(((OicUuid_t*) 0)->id)) + 1] =
  90             { 0, };
  91             uint32_t outLen = 0;
  92             B64Result b64Ret = B64_OK;
  93             std::ostringstream deviceId("");
  94
  95             b64Ret = b64Encode(uuid.id, sizeof(uuid.id),
  96                     base64Buff, sizeof(base64Buff), &outLen);
  97
  98             if (B64_OK == b64Ret)
  99             {
 100                 deviceId << base64Buff;
 101             }
 102             uuidString =  deviceId.str();
 103         }
 104
 105         void EnrolleeSecurity::ownershipTransferCb(OC::PMResultList_t *result, int hasError)
 106         {
 107             if (hasError)
 108             {
 109                 OIC_LOG(ERROR, ENROLEE_SECURITY_TAG,"Error!!! in OwnershipTransfer");
 110
 111                 std::shared_ptr< SecProvisioningStatus > securityProvisioningStatus = nullptr;
 112                 std::string uuid;
 113                 convertUUIDToString(result->at(0).deviceId, uuid);
 114                 securityProvisioningStatus = std::make_shared< SecProvisioningStatus >(uuid,
 115                         ES_ERROR);
 116
 117                 m_enrolleeSecStatusCb(securityProvisioningStatus);
 118                 return;
 119             }
 120             else
 121             {
 122                 OIC_LOG(DEBUG, ENROLEE_SECURITY_TAG, "ownershipTransferCb : Received provisioning results: ");
 123                 for (unsigned int i = 0; i < result->size(); i++)
 124                 {
 125                     OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "Result is = %d for device",result->at(i).res);
 126                     std::string uuid;
 127                     convertUUIDToString(result->at(0).deviceId, uuid);
 128
 129                     OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "UUID : %s",uuid.c_str());
 130                     std::shared_ptr< SecProvisioningStatus > securityProvisioningStatus = nullptr;
 131                     securityProvisioningStatus = std::make_shared< SecProvisioningStatus >(uuid,
 132                             ES_OK);
 133
 134                     m_enrolleeSecStatusCb(securityProvisioningStatus);
 135                     return;
 136                 }
 137
 138                 delete result;
 139             }
 140         }
 141
 142         bool EnrolleeSecurity::performOwnershipTransfer()
 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                 //Throw exception
 185                 throw ESPlatformException(result);
 186             }
 187             else if (pUnownedDevList.size())
 188             {
 189                 OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "Found Unowned devices. Count =%d",
 190                         pUnownedDevList.size());
 191
 192                 m_unownedDevice = getEnrollee(pUnownedDevList);
 193                 if (m_unownedDevice)
 194                 {
 195                     OTMCallbackData_t justWorksCBData;
 196                     justWorksCBData.loadSecretCB = LoadSecretJustWorksCallback;
 197                     justWorksCBData.createSecureSessionCB = CreateSecureSessionJustWorksCallback;
 198                     justWorksCBData.createSelectOxmPayloadCB = CreateJustWorksSelectOxmPayload;
 199                     justWorksCBData.createOwnerTransferPayloadCB =
 200                             CreateJustWorksOwnerTransferPayload;
 201                     OCSecure::setOwnerTransferCallbackData(OIC_JUST_WORKS, &justWorksCBData, NULL);
 202
 203                     OIC_LOG_V(DEBUG, ENROLEE_SECURITY_TAG, "Transfering ownership for : %s ",
 204                             m_unownedDevice->getDeviceID().c_str());
 205
 206                     OC::ResultCallBack ownershipTransferCb = std::bind(
 207                             &EnrolleeSecurity::ownershipTransferCb, this, std::placeholders::_1,
 208                             std::placeholders::_2);
 209
 210                     if (m_unownedDevice->doOwnershipTransfer(ownershipTransferCb) != OC_STACK_OK)
 211                     {
 212                         OIC_LOG(ERROR, ENROLEE_SECURITY_TAG, "OwnershipTransferCallback is failed");
 213                         return false;
 214                     }
 215                 }
 216             }
 217             else
 218             {
 219                 OIC_LOG(ERROR, ENROLEE_SECURITY_TAG, "No unOwned devices found.");
 220                 return false;
 221             }
 222
 223             return true;
 224         }
 225     }
 226 }