resource/csdk/security/src/doxmresource.c

   1 //******************************************************************
   2 //
   3 // Copyright 2015 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 #include "iotivity_config.h"
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #ifdef HAVE_STRINGS_H
  25 #include <strings.h>
  26 #endif
  27
  28 #include "ocstack.h"
  29 #include "oic_malloc.h"
  30 #include "payload_logging.h"
  31 #include "utlist.h"
  32 #include "ocrandom.h"
  33 #include "ocpayload.h"
  34 #include "ocpayloadcbor.h"
  35 #include "cainterface.h"
  36 #include "ocserverrequest.h"
  37 #include "resourcemanager.h"
  38 #include "doxmresource.h"
  39 #include "pstatresource.h"
  40 #include "aclresource.h"
  41 #include "amaclresource.h"
  42 #include "pconfresource.h"
  43 #include "dpairingresource.h"
  44 #include "psinterface.h"
  45 #include "srmresourcestrings.h"
  46 #include "securevirtualresourcetypes.h"
  47 #include "credresource.h"
  48 #include "srmutility.h"
  49 #include "pinoxmcommon.h"
  50 #include "oxmverifycommon.h"
  51 #include "octhread.h"
  52 #include "oic_time.h"
  53 #include "oic_string.h"
  54
  55 #if defined(__WITH_DTLS__) || defined (__WITH_TLS__)
  56 #include "pkix_interface.h"
  57 #include "ca_adapter_net_ssl.h"
  58 #endif
  59
  60 #define TAG  "OIC_SRM_DOXM"
  61 #define CHAR_ZERO ('0')
  62
  63 /** Default cbor payload size. This value is increased in case of CborErrorOutOfMemory.
  64  * The value of payload size is increased until reaching belox max cbor size. */
  65 static const uint16_t CBOR_SIZE = 512;
  66
  67 /** Max cbor size payload. */
  68 static const uint16_t CBOR_MAX_SIZE = 4400;
  69
  70 #if defined(__WITH_DTLS__) || defined (__WITH_TLS__)
  71 /** MAX uuid seed size */
  72 #define MAX_UUID_SEED_SIZE (64)
  73 /** MIN uuid seed size */
  74 #define MIN_UUID_SEED_SIZE (8)
  75
  76 /** Buffer to save the seed of device UUID */
  77 static uint8_t gUuidSeed[MAX_UUID_SEED_SIZE];
  78 static size_t gUuidSeedSize = 0;
  79 #endif
  80
  81 #ifdef MULTIPLE_OWNER
  82 #define MAX_SUBOWNER_SIZE (64)
  83 #define MIN_SUBOWNER_SIZE (1)
  84 #define DEFAULT_SUBOWNER_SIZE (32)
  85
  86 static size_t gMaxSubOwnerSize = DEFAULT_SUBOWNER_SIZE;
  87 #endif
  88
  89 typedef enum ConfirmState{
  90     CONFIRM_STATE_READY = 0,
  91     CONFIRM_STATE_WAIT = 1,
  92     CONFIRM_STATE_ACCEPTED = 2,
  93     CONFIRM_STATE_DENIED = 3
  94 }ConfirmState_t;
  95
  96 static OicSecDoxm_t        *gDoxm = NULL;
  97 static oc_mutex            g_mutexDoxm = NULL;
  98 static bool                g_isDoxmNull = false;
  99 static OCResourceHandle    gDoxmHandle = NULL;
 100 static oc_mutex            g_mutexWait;
 101 static oc_thread           g_waitConfirmThreadId;
 102 oc_cond                    g_condWait;
 103 static InformOxmSelectedCallback_t g_InformOxmSelectedCallback = NULL;
 104 static bool                g_isConfirmResult;
 105
 106 static OicSecOxm_t gOicSecDoxmJustWorks = OIC_JUST_WORKS;
 107 static OicSecDoxm_t gDefaultDoxm =
 108 {
 109     NULL,                   /* OicUrn_t *oxmType */
 110     0,                      /* size_t oxmTypeLen */
 111     &gOicSecDoxmJustWorks,  /* uint16_t *oxm */
 112     1,                      /* size_t oxmLen */
 113     OIC_JUST_WORKS,         /* uint16_t oxmSel */
 114     SYMMETRIC_PAIR_WISE_KEY,/* OicSecCredType_t sct */
 115     false,                  /* bool owned */
 116     {.id = {0}},            /* OicUuid_t deviceID */
 117     false,                  /* bool dpc */
 118     {.id = {0}},            /* OicUuid_t owner */
 119 #ifdef MULTIPLE_OWNER
 120     NULL,                   /* OicSecSubOwner_t sub-owner list */
 121     NULL,                   /* OicSecMomType_t multiple owner mode */
 122 #endif //MULTIPLE_OWNER
 123     {.id = {0}},            /* OicUuid_t rownerID */
 124 };
 125
 126 static uint16_t gConfirmMsgId = 0;
 127 static ConfirmState_t gConfirmState = CONFIRM_STATE_READY;
 128
 129 static uint8_t gEmptyUuid[UUID_LENGTH] = {0};
 130
 131 /**
 132  * This method is internal method.
 133  * the param roParsed is optionally used to know whether cborPayload has
 134  * at least read only property value or not.
 135  */
 136 static OCStackResult CBORPayloadToDoxmBin(const uint8_t *cborPayload, size_t size,
 137                                 OicSecDoxm_t **doxm, bool *roParsed);
 138
 139 void DeleteDoxmBinData(OicSecDoxm_t* doxm)
 140 {
 141     if (doxm)
 142     {
 143         //Clean oxmType
 144         for (size_t i = 0; i < doxm->oxmTypeLen; i++)
 145         {
 146             OICFree(doxm->oxmType[i]);
 147         }
 148         OICFree(doxm->oxmType);
 149
 150         //clean oxm
 151         OICFree(doxm->oxm);
 152
 153 #ifdef MULTIPLE_OWNER
 154         //clean mom
 155         OICFree(doxm->mom);
 156
 157         //clean sub-owner list
 158         if(NULL != doxm->subOwners)
 159         {
 160             OicSecSubOwner_t* subowner = NULL;
 161             OicSecSubOwner_t* temp = NULL;
 162             LL_FOREACH_SAFE(doxm->subOwners, subowner, temp)
 163             {
 164                 LL_DELETE(doxm->subOwners, subowner);
 165                 OICFree(subowner);
 166             }
 167         }
 168 #endif //MULTIPLE_OWNER
 169
 170         //Clean doxm itself
 171         OICFree(doxm);
 172     }
 173
 174     if(g_mutexDoxm)
 175     {
 176         oc_mutex_free(g_mutexDoxm);
 177         g_mutexDoxm = NULL;
 178     }
 179 }
 180
 181 OCStackResult DoxmToCBORPayload(const OicSecDoxm_t *doxm, uint8_t **payload, size_t *size,
 182                                 bool rwOnly)
 183 {
 184     if (NULL == doxm || NULL == payload || NULL != *payload || NULL == size)
 185     {
 186         return OC_STACK_INVALID_PARAM;
 187     }
 188     size_t cborLen = *size;
 189     if (0 == cborLen)
 190     {
 191         cborLen = CBOR_SIZE;
 192     }
 193     *payload = NULL;
 194     *size = 0;
 195
 196     OCStackResult ret = OC_STACK_ERROR;
 197
 198     CborEncoder encoder;
 199     CborEncoder doxmMap;
 200     char* strUuid = NULL;
 201
 202     int64_t cborEncoderResult = CborNoError;
 203
 204     uint8_t *outPayload = (uint8_t *)OICCalloc(1, cborLen);
 205     VERIFY_NON_NULL(TAG, outPayload, ERROR);
 206     cbor_encoder_init(&encoder, outPayload, cborLen, 0);
 207
 208     cborEncoderResult = cbor_encoder_create_map(&encoder, &doxmMap, CborIndefiniteLength);
 209     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Doxm Map.");
 210
 211     //OxmType -- Not Mandatory
 212     if (doxm->oxmTypeLen > 0)
 213     {
 214         CborEncoder oxmType;
 215         cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_OXM_TYPE_NAME,
 216             strlen(OIC_JSON_OXM_TYPE_NAME));
 217         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding oxmType Tag.");
 218         cborEncoderResult = cbor_encoder_create_array(&doxmMap, &oxmType, doxm->oxmTypeLen);
 219         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding oxmType Array.");
 220
 221         for (size_t i = 0; i < doxm->oxmTypeLen; i++)
 222         {
 223             cborEncoderResult = cbor_encode_text_string(&oxmType, doxm->oxmType[i],
 224                 strlen(doxm->oxmType[i]));
 225             VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding oxmType Value.");
 226         }
 227         cborEncoderResult = cbor_encoder_close_container(&doxmMap, &oxmType);
 228         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Closing oxmType.");
 229     }
 230
 231     //Oxm -- Not Mandatory
 232     if (doxm->oxmLen > 0 && false == rwOnly)
 233     {
 234         CborEncoder oxm;
 235         cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_OXMS_NAME,
 236             strlen(OIC_JSON_OXMS_NAME));
 237         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding oxmName Tag.");
 238         cborEncoderResult = cbor_encoder_create_array(&doxmMap, &oxm, doxm->oxmLen);
 239         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding oxmName Array.");
 240
 241         for (size_t i = 0; i < doxm->oxmLen; i++)
 242         {
 243             cborEncoderResult = cbor_encode_int(&oxm, doxm->oxm[i]);
 244             VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding oxmName Value");
 245         }
 246         cborEncoderResult = cbor_encoder_close_container(&doxmMap, &oxm);
 247         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Closing oxmName.");
 248     }
 249
 250     //OxmSel -- Mandatory
 251     cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_OXM_SEL_NAME,
 252         strlen(OIC_JSON_OXM_SEL_NAME));
 253     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Sel Tag.");
 254     cborEncoderResult = cbor_encode_int(&doxmMap, doxm->oxmSel);
 255     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Sel Value.");
 256
 257     //sct -- Mandatory
 258     if (false == rwOnly)
 259     {
 260         cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_SUPPORTED_CRED_TYPE_NAME,
 261             strlen(OIC_JSON_SUPPORTED_CRED_TYPE_NAME));
 262         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Cred Type Tag");
 263         cborEncoderResult = cbor_encode_int(&doxmMap, doxm->sct);
 264         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Cred Type Value.");
 265     }
 266
 267     //Owned -- Mandatory
 268     cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_OWNED_NAME,
 269         strlen(OIC_JSON_OWNED_NAME));
 270     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Owned Tag.");
 271     cborEncoderResult = cbor_encode_boolean(&doxmMap, doxm->owned);
 272     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Owned Value.");
 273
 274     if (false == rwOnly)
 275     {
 276         //DeviceId -- Mandatory
 277         cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_DEVICE_ID_NAME,
 278             strlen(OIC_JSON_DEVICE_ID_NAME));
 279         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Device Id Tag.");
 280         ret = ConvertUuidToStr(&doxm->deviceID, &strUuid);
 281         VERIFY_SUCCESS(TAG, OC_STACK_OK == ret , ERROR);
 282         cborEncoderResult = cbor_encode_text_string(&doxmMap, strUuid, strlen(strUuid));
 283         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Device Id Value.");
 284         OICFree(strUuid);
 285         strUuid = NULL;
 286     }
 287
 288 #ifdef MULTIPLE_OWNER
 289     //Device SubOwnerID -- Not Mandatory
 290     if(doxm->subOwners)
 291     {
 292         size_t subOwnerLen = 0;
 293         OicSecSubOwner_t* subOwner = NULL;
 294         LL_FOREACH(doxm->subOwners, subOwner)
 295         {
 296             subOwnerLen++;
 297         }
 298
 299         CborEncoder subOwners;
 300         cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_SUBOWNERID_NAME,
 301             strlen(OIC_JSON_SUBOWNERID_NAME));
 302         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding SubOwnerId Tag.");
 303         cborEncoderResult = cbor_encoder_create_array(&doxmMap, &subOwners, subOwnerLen);
 304         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding SubOwner Array.");
 305
 306         subOwner = NULL;
 307         LL_FOREACH(doxm->subOwners, subOwner)
 308         {
 309             char* strUuid = NULL;
 310             ret = ConvertUuidToStr(&subOwner->uuid, &strUuid);
 311             VERIFY_SUCCESS(TAG, OC_STACK_OK == ret , ERROR);
 312             cborEncoderResult = cbor_encode_text_string(&subOwners, strUuid, strlen(strUuid));
 313             OICFree(strUuid);
 314             VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding SubOwnerId Value");
 315         }
 316         cborEncoderResult = cbor_encoder_close_container(&doxmMap, &subOwners);
 317         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Closing SubOwnerId.");
 318     }
 319
 320     //Multiple Owner Mode -- Not Mandatory
 321     if(doxm->mom)
 322     {
 323         cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_MOM_NAME,
 324             strlen(OIC_JSON_MOM_NAME));
 325         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding mom Tag");
 326         cborEncoderResult = cbor_encode_int(&doxmMap, (int64_t)doxm->mom->mode);
 327         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding mom Value.");
 328     }
 329 #endif //MULTIPLE_OWNER
 330
 331     //devownerid -- Mandatory
 332     cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_DEVOWNERID_NAME,
 333         strlen(OIC_JSON_DEVOWNERID_NAME));
 334     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Owner Id Tag.");
 335     ret = ConvertUuidToStr(&doxm->owner, &strUuid);
 336     VERIFY_SUCCESS(TAG, OC_STACK_OK == ret , ERROR);
 337     cborEncoderResult = cbor_encode_text_string(&doxmMap, strUuid, strlen(strUuid));
 338     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding Owner Id Value.");
 339     OICFree(strUuid);
 340     strUuid = NULL;
 341
 342     //ROwner -- Mandatory
 343     cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_ROWNERID_NAME,
 344         strlen(OIC_JSON_ROWNERID_NAME));
 345     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding ROwner Id Tag.");
 346     ret = ConvertUuidToStr(&doxm->rownerID, &strUuid);
 347     VERIFY_SUCCESS(TAG, OC_STACK_OK == ret , ERROR);
 348     cborEncoderResult = cbor_encode_text_string(&doxmMap, strUuid, strlen(strUuid));
 349     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding ROwner Id Value.");
 350     OICFree(strUuid);
 351     strUuid = NULL;
 352
 353     //RT -- Mandatory
 354     CborEncoder rtArray;
 355     cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_RT_NAME,
 356             strlen(OIC_JSON_RT_NAME));
 357     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Addding RT Name Tag.");
 358     cborEncoderResult = cbor_encoder_create_array(&doxmMap, &rtArray, 1);
 359     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Addding RT Value.");
 360     for (size_t i = 0; i < 1; i++)
 361     {
 362         cborEncoderResult = cbor_encode_text_string(&rtArray, OIC_RSRC_TYPE_SEC_DOXM,
 363                 strlen(OIC_RSRC_TYPE_SEC_DOXM));
 364         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding RT Value.");
 365     }
 366     cborEncoderResult = cbor_encoder_close_container(&doxmMap, &rtArray);
 367     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Closing RT.");
 368
 369     //IF-- Mandatory
 370      CborEncoder ifArray;
 371      cborEncoderResult = cbor_encode_text_string(&doxmMap, OIC_JSON_IF_NAME,
 372              strlen(OIC_JSON_IF_NAME));
 373      VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Addding IF Name Tag.");
 374      cborEncoderResult = cbor_encoder_create_array(&doxmMap, &ifArray, 1);
 375      VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Addding IF Value.");
 376     for (size_t i = 0; i < 1; i++)
 377     {
 378         cborEncoderResult = cbor_encode_text_string(&ifArray, OC_RSRVD_INTERFACE_DEFAULT,
 379                 strlen(OC_RSRVD_INTERFACE_DEFAULT));
 380         VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Adding IF Value.");
 381     }
 382     cborEncoderResult = cbor_encoder_close_container(&doxmMap, &ifArray);
 383     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Closing IF.");
 384
 385     cborEncoderResult = cbor_encoder_close_container(&encoder, &doxmMap);
 386     VERIFY_CBOR_SUCCESS(TAG, cborEncoderResult, "Failed Closing DoxmMap.");
 387
 388     if (CborNoError == cborEncoderResult)
 389     {
 390         *size = cbor_encoder_get_buffer_size(&encoder, outPayload);
 391         *payload = outPayload;
 392         ret = OC_STACK_OK;
 393     }
 394 exit:
 395     if ((CborErrorOutOfMemory == cborEncoderResult) && (cborLen < CBOR_MAX_SIZE))
 396     {
 397         OIC_LOG(DEBUG, TAG, "Memory getting reallocated.");
 398         // reallocate and try again!
 399         OICFree(outPayload);
 400         outPayload = NULL;
 401         // Since the allocated initial memory failed, double the memory.
 402         cborLen += cbor_encoder_get_buffer_size(&encoder, encoder.end);
 403         OIC_LOG_V(DEBUG, TAG, "Doxm reallocation size : %zd.", cborLen);
 404         cborEncoderResult = CborNoError;
 405         ret = DoxmToCBORPayload(doxm, payload, &cborLen, rwOnly);
 406         *size = cborLen;
 407     }
 408
 409     if ((CborNoError != cborEncoderResult) || (OC_STACK_OK != ret))
 410     {
 411        OICFree(outPayload);
 412        outPayload = NULL;
 413        *payload = NULL;
 414        *size = 0;
 415        ret = OC_STACK_ERROR;
 416     }
 417
 418     return ret;
 419 }
 420
 421 OCStackResult CBORPayloadToDoxm(const uint8_t *cborPayload, size_t size,
 422                                 OicSecDoxm_t **secDoxm)
 423 {
 424     return CBORPayloadToDoxmBin(cborPayload, size, secDoxm, NULL);
 425 }
 426
 427 static OCStackResult CBORPayloadToDoxmBin(const uint8_t *cborPayload, size_t size,
 428                                 OicSecDoxm_t **secDoxm, bool *roParsed)
 429 {
 430     if (NULL == cborPayload || NULL == secDoxm || NULL != *secDoxm || 0 == size)
 431     {
 432         return OC_STACK_INVALID_PARAM;
 433     }
 434
 435     OCStackResult ret = OC_STACK_ERROR;
 436     *secDoxm = NULL;
 437
 438     CborParser parser;
 439     CborError cborFindResult = CborNoError;
 440     char* strUuid = NULL;
 441     size_t len = 0;
 442     CborValue doxmCbor;
 443
 444     cbor_parser_init(cborPayload, size, 0, &parser, &doxmCbor);
 445     CborValue doxmMap;
 446     OicSecDoxm_t *doxm = (OicSecDoxm_t *)OICCalloc(1, sizeof(*doxm));
 447     VERIFY_NON_NULL(TAG, doxm, ERROR);
 448
 449     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_OXM_TYPE_NAME, &doxmMap);
 450     //OxmType -- not Mandatory
 451     if (CborNoError == cborFindResult && cbor_value_is_array(&doxmMap))
 452     {
 453         CborValue oxmType;
 454
 455         cborFindResult = cbor_value_get_array_length(&doxmMap, &doxm->oxmTypeLen);
 456         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding oxmTypeLen.");
 457         VERIFY_SUCCESS(TAG, doxm->oxmTypeLen != 0, ERROR);
 458
 459         doxm->oxmType = (OicUrn_t *)OICCalloc(doxm->oxmTypeLen, sizeof(*doxm->oxmType));
 460         VERIFY_NON_NULL(TAG, doxm->oxmType, ERROR);
 461
 462         cborFindResult = cbor_value_enter_container(&doxmMap, &oxmType);
 463         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Entering oxmType Array.")
 464
 465         int i = 0;
 466         size_t len = 0;
 467         while (cbor_value_is_valid(&oxmType) && cbor_value_is_text_string(&oxmType))
 468         {
 469             cborFindResult = cbor_value_dup_text_string(&oxmType, &doxm->oxmType[i++],
 470                                                         &len, NULL);
 471             VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding omxType text string.");
 472             cborFindResult = cbor_value_advance(&oxmType);
 473             VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Advancing oxmType.");
 474         }
 475     }
 476
 477     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_OXMS_NAME, &doxmMap);
 478     //Oxm -- not Mandatory
 479     if (CborNoError == cborFindResult && cbor_value_is_array(&doxmMap))
 480     {
 481         CborValue oxm;
 482         cborFindResult = cbor_value_get_array_length(&doxmMap, &doxm->oxmLen);
 483         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding oxmName array Length.");
 484         VERIFY_SUCCESS(TAG, doxm->oxmLen != 0, ERROR);
 485
 486         doxm->oxm = (OicSecOxm_t *)OICCalloc(doxm->oxmLen, sizeof(*doxm->oxm));
 487         VERIFY_NON_NULL(TAG, doxm->oxm, ERROR);
 488
 489         cborFindResult = cbor_value_enter_container(&doxmMap, &oxm);
 490         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Entering oxmName Array.")
 491
 492         int i = 0;
 493         while (cbor_value_is_valid(&oxm) && cbor_value_is_integer(&oxm))
 494         {
 495             int tmp;
 496
 497             cborFindResult = cbor_value_get_int(&oxm, &tmp);
 498             VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding oxmName Value")
 499             doxm->oxm[i++] = (OicSecOxm_t)tmp;
 500             cborFindResult = cbor_value_advance(&oxm);
 501             VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Advancing oxmName.")
 502         }
 503
 504         if (roParsed)
 505         {
 506             *roParsed = true;
 507         }
 508     }
 509     else
 510     {
 511         VERIFY_NON_NULL(TAG, gDoxm, ERROR);
 512         doxm->oxm = (OicSecOxm_t *) OICCalloc(gDoxm->oxmLen, sizeof(*doxm->oxm));
 513         VERIFY_NON_NULL(TAG, doxm->oxm, ERROR);
 514         doxm->oxmLen = gDoxm->oxmLen;
 515         for (size_t i = 0; i < gDoxm->oxmLen; i++)
 516         {
 517             doxm->oxm[i] = gDoxm->oxm[i];
 518         }
 519     }
 520
 521     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_OXM_SEL_NAME, &doxmMap);
 522     if (CborNoError == cborFindResult && cbor_value_is_integer(&doxmMap))
 523     {
 524         int oxmSel;
 525
 526         cborFindResult = cbor_value_get_int(&doxmMap, &oxmSel);
 527         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding Sel Name Value.")
 528         doxm->oxmSel = (OicSecOxm_t)oxmSel;
 529     }
 530     else // PUT/POST JSON may not have oxmsel so set it to the gDoxm->oxmSel
 531     {
 532         VERIFY_NON_NULL(TAG, gDoxm, ERROR);
 533         doxm->oxmSel = gDoxm->oxmSel;
 534     }
 535
 536     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_SUPPORTED_CRED_TYPE_NAME, &doxmMap);
 537     if (CborNoError == cborFindResult && cbor_value_is_integer(&doxmMap))
 538     {
 539         int sct;
 540
 541         cborFindResult = cbor_value_get_int(&doxmMap, &sct);
 542         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding Sct Name Value.")
 543         doxm->sct = (OicSecCredType_t)sct;
 544
 545         if (roParsed)
 546         {
 547             *roParsed = true;
 548         }
 549     }
 550     else // PUT/POST JSON may not have sct so set it to the gDoxm->sct
 551     {
 552         VERIFY_NON_NULL(TAG, gDoxm, ERROR);
 553         doxm->sct = gDoxm->sct;
 554     }
 555
 556     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_OWNED_NAME, &doxmMap);
 557     if (CborNoError == cborFindResult && cbor_value_is_boolean(&doxmMap))
 558     {
 559         cborFindResult = cbor_value_get_boolean(&doxmMap, &doxm->owned);
 560         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding Owned Value.")
 561     }
 562     else // PUT/POST JSON may not have owned so set it to the gDomx->owned
 563     {
 564         VERIFY_NON_NULL(TAG, gDoxm, ERROR);
 565         doxm->owned = gDoxm->owned;
 566     }
 567
 568     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_DEVICE_ID_NAME, &doxmMap);
 569     if (CborNoError == cborFindResult && cbor_value_is_text_string(&doxmMap))
 570     {
 571         cborFindResult = cbor_value_dup_text_string(&doxmMap, &strUuid , &len, NULL);
 572         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding Device Id Value.");
 573         ret = ConvertStrToUuid(strUuid , &doxm->deviceID);
 574         VERIFY_SUCCESS(TAG, OC_STACK_OK == ret, ERROR);
 575         OICFree(strUuid);
 576         strUuid  = NULL;
 577     }
 578     else
 579     {
 580         VERIFY_NON_NULL(TAG, gDoxm, ERROR);
 581         memcpy(doxm->deviceID.id, &gDoxm->deviceID.id, sizeof(doxm->deviceID.id));
 582     }
 583
 584     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_DEVOWNERID_NAME, &doxmMap);
 585     if (CborNoError == cborFindResult && cbor_value_is_text_string(&doxmMap))
 586     {
 587         cborFindResult = cbor_value_dup_text_string(&doxmMap, &strUuid , &len, NULL);
 588         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding Owner Value.");
 589         ret = ConvertStrToUuid(strUuid , &doxm->owner);
 590         VERIFY_SUCCESS(TAG, OC_STACK_OK == ret, ERROR);
 591         OICFree(strUuid);
 592         strUuid  = NULL;
 593     }
 594     else
 595     {
 596         VERIFY_NON_NULL(TAG, gDoxm, ERROR);
 597         memcpy(doxm->owner.id, gDoxm->owner.id, sizeof(doxm->owner.id));
 598     }
 599
 600 #ifdef MULTIPLE_OWNER
 601     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_MOM_NAME, &doxmMap);
 602     if(CborNoError == cborFindResult && cbor_value_is_integer(&doxmMap))
 603     {
 604         int mode = 0;
 605         cborFindResult = cbor_value_get_int(&doxmMap, &mode);
 606         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding mom Name Value.")
 607         if(NULL == doxm->mom)
 608         {
 609             doxm->mom = (OicSecMom_t*)OICCalloc(1, sizeof(OicSecMom_t));
 610             VERIFY_NON_NULL(TAG, doxm->mom, ERROR);
 611         }
 612         doxm->mom->mode = (OicSecMomType_t)mode;
 613     }
 614     else if(NULL != gDoxm && NULL != gDoxm->mom)
 615     {
 616         // PUT/POST JSON may not have 'mom' so set it to the gDomx->mom
 617         if(NULL == doxm->mom)
 618         {
 619             doxm->mom = (OicSecMom_t*)OICCalloc(1, sizeof(OicSecMom_t));
 620             VERIFY_NON_NULL(TAG, doxm->mom, ERROR);
 621         }
 622         doxm->mom->mode = gDoxm->mom->mode;
 623     }
 624
 625     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_SUBOWNERID_NAME, &doxmMap);
 626     if(CborNoError == cborFindResult && cbor_value_is_array(&doxmMap))
 627     {
 628         size_t subOwnerLen = 0;
 629         CborValue subOwnerCbor;
 630         cborFindResult = cbor_value_get_array_length(&doxmMap, &subOwnerLen);
 631         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding SubOwner array Length.");
 632         VERIFY_SUCCESS(TAG, 0 != subOwnerLen, ERROR);
 633
 634         cborFindResult = cbor_value_enter_container(&doxmMap, &subOwnerCbor);
 635         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Entering SubOwner Array.")
 636
 637         while (cbor_value_is_valid(&subOwnerCbor) && cbor_value_is_text_string(&subOwnerCbor))
 638         {
 639             OCStackResult convertRes = OC_STACK_ERROR;
 640             OicSecSubOwner_t* subOwner = NULL;
 641             char* strUuid = NULL;
 642             size_t uuidLen = 0;
 643
 644             cborFindResult = cbor_value_dup_text_string(&subOwnerCbor, &strUuid, &uuidLen, NULL);
 645             VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding SubOwnerId Value");
 646
 647             subOwner = (OicSecSubOwner_t*)OICCalloc(1, sizeof(OicSecSubOwner_t));
 648             VERIFY_NON_NULL(TAG, subOwner, ERROR);
 649
 650             convertRes = ConvertStrToUuid(strUuid, &subOwner->uuid);
 651             VERIFY_SUCCESS(TAG, OC_STACK_OK == convertRes, ERROR);
 652             subOwner->status = MOT_STATUS_DONE;
 653             LL_APPEND(doxm->subOwners, subOwner);
 654
 655             cborFindResult = cbor_value_advance(&subOwnerCbor);
 656             VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Advancing SubOwnerId.")
 657         }
 658     }
 659     else if(NULL != gDoxm && NULL != gDoxm->subOwners)
 660     {
 661         // PUT/POST JSON may not have 'subOwners' so set it to the gDomx->subOwners
 662         OicSecSubOwner_t* subOwnerItor = NULL;
 663         LL_FOREACH(gDoxm->subOwners, subOwnerItor)
 664         {
 665             OicSecSubOwner_t* subOwnerId = (OicSecSubOwner_t*)OICCalloc(1, sizeof(OicSecSubOwner_t));
 666             VERIFY_NON_NULL(TAG, subOwnerId, ERROR);
 667
 668             memcpy(&subOwnerId->uuid, &subOwnerItor->uuid, sizeof(OicUuid_t));
 669             subOwnerId->status = MOT_STATUS_DONE;
 670
 671             LL_APPEND(doxm->subOwners, subOwnerId);
 672         }
 673     }
 674 #endif //MULTIPLE_OWNER
 675
 676     cborFindResult = cbor_value_map_find_value(&doxmCbor, OIC_JSON_ROWNERID_NAME, &doxmMap);
 677     if (CborNoError == cborFindResult && cbor_value_is_text_string(&doxmMap))
 678     {
 679         cborFindResult = cbor_value_dup_text_string(&doxmMap, &strUuid , &len, NULL);
 680         VERIFY_CBOR_SUCCESS(TAG, cborFindResult, "Failed Finding ROwner Value.");
 681         ret = ConvertStrToUuid(strUuid , &doxm->rownerID);
 682         VERIFY_SUCCESS(TAG, OC_STACK_OK == ret, ERROR);
 683         OICFree(strUuid);
 684         strUuid  = NULL;
 685     }
 686     else
 687     {
 688         VERIFY_NON_NULL(TAG, gDoxm, ERROR);
 689         memcpy(doxm->rownerID.id, gDoxm->rownerID.id, sizeof(doxm->rownerID.id));
 690     }
 691
 692     *secDoxm = doxm;
 693     ret = OC_STACK_OK;
 694
 695 exit:
 696     if (CborNoError != cborFindResult)
 697     {
 698         OIC_LOG (ERROR, TAG, "CBORPayloadToDoxm failed!!!");
 699         DeleteDoxmBinData(doxm);
 700         doxm = NULL;
 701         *secDoxm = NULL;
 702         ret = OC_STACK_ERROR;
 703     }
 704     return ret;
 705 }
 706
 707 /**
 708  * @todo document this function including why code might need to call this.
 709  * The current suspicion is that it's not being called as much as it should.
 710  */
 711 static bool UpdatePersistentStorage(OicSecDoxm_t * doxm)
 712 {
 713     bool bRet = false;
 714
 715     if (NULL != doxm)
 716     {
 717         // Convert Doxm data into CBOR for update to persistent storage
 718         uint8_t *payload = NULL;
 719         size_t size = 0;
 720         OCStackResult res = DoxmToCBORPayload(doxm, &payload, &size, false);
 721         if (payload && (OC_STACK_OK == res)
 722             && (OC_STACK_OK == UpdateSecureResourceInPS(OIC_JSON_DOXM_NAME, payload, size)))
 723         {
 724                 bRet = true;
 725         }
 726         OICFree(payload);
 727     }
 728     else
 729     {
 730         if (OC_STACK_OK == UpdateSecureResourceInPS(OIC_JSON_DOXM_NAME, NULL, 0))
 731         {
 732                 bRet = true;
 733         }
 734     }
 735
 736     return bRet;
 737 }
 738
 739 static bool ValidateQuery(const char * query)
 740 {
 741     // Send doxm resource data if the state of doxm resource
 742     // matches with the query parameters.
 743     // else send doxm resource data as NULL
 744     // TODO Remove this check and rely on Policy Engine
 745     // and Provisioning Mode to enforce provisioning-state
 746     // access rules. Eventually, the PE and PM code will
 747     // not send a request to the /doxm Entity Handler at all
 748     // if it should not respond.
 749     OIC_LOG (DEBUG, TAG, "In ValidateQuery");
 750     if(NULL == gDoxm)
 751     {
 752         return false;
 753     }
 754
 755     bool bOwnedQry = false;         // does querystring contains 'owned' query ?
 756     bool bOwnedMatch = false;       // does 'owned' query value matches with doxm.owned status?
 757     bool bDeviceIDQry = false;      // does querystring contains 'deviceid' query ?
 758     bool bDeviceIDMatch = false;    // does 'deviceid' query matches with doxm.deviceid ?
 759     bool bInterfaceQry = false;      // does querystring contains 'if' query ?
 760     bool bInterfaceMatch = false;    // does 'if' query matches with oic.if.baseline ?
 761 #ifdef MULTIPLE_OWNER
 762     bool bMotMatch = false;       // does 'mom' query value is not '0' && does query value matches with doxm.owned status?
 763 #endif //MULTIPLE_OWNER
 764
 765     OicParseQueryIter_t parseIter = {.attrPos = NULL};
 766
 767     ParseQueryIterInit((unsigned char*)query, &parseIter);
 768
 769     while (GetNextQuery(&parseIter))
 770     {
 771         if (strncasecmp((char *)parseIter.attrPos, OIC_JSON_OWNED_NAME, parseIter.attrLen) == 0)
 772         {
 773             bOwnedQry = true;
 774             if ((strncasecmp((char *)parseIter.valPos, OIC_SEC_TRUE, parseIter.valLen) == 0) &&
 775                     (gDoxm->owned))
 776             {
 777                 bOwnedMatch = true;
 778             }
 779             else if ((strncasecmp((char *)parseIter.valPos, OIC_SEC_FALSE, parseIter.valLen) == 0)
 780                     && (!gDoxm->owned))
 781             {
 782                 bOwnedMatch = true;
 783             }
 784         }
 785
 786 #ifdef MULTIPLE_OWNER
 787         if (strncasecmp((char *)parseIter.attrPos, OIC_JSON_MOM_NAME, strlen(OIC_JSON_MOM_NAME)) == 0)
 788         {
 789             OicSecMomType_t momMode = (OicSecMomType_t)(parseIter.valPos[0] - CHAR_ZERO);
 790             if(NULL != gDoxm->mom && momMode != gDoxm->mom->mode)
 791             {
 792                 if(GetNextQuery(&parseIter))
 793                 {
 794                     if (strncasecmp((char *)parseIter.attrPos, OIC_JSON_OWNED_NAME, parseIter.attrLen) == 0)
 795                     {
 796                         if ((strncasecmp((char *)parseIter.valPos, OIC_SEC_TRUE, parseIter.valLen) == 0) &&
 797                                 (gDoxm->owned))
 798                         {
 799                             bMotMatch = true;
 800                         }
 801                     }
 802                 }
 803             }
 804             return bMotMatch;
 805         }
 806 #endif //MULTIPLE_OWNER
 807
 808         if (strncasecmp((char *)parseIter.attrPos, OIC_JSON_DEVICE_ID_NAME, parseIter.attrLen) == 0)
 809         {
 810             bDeviceIDQry = true;
 811             OicUuid_t subject = {.id={0}};
 812
 813             memcpy(subject.id, parseIter.valPos, parseIter.valLen);
 814             if (0 == memcmp(&gDoxm->deviceID.id, &subject.id, sizeof(gDoxm->deviceID.id)))
 815             {
 816                 bDeviceIDMatch = true;
 817             }
 818         }
 819
 820         if (strncasecmp((char *)parseIter.attrPos, OC_RSRVD_INTERFACE, parseIter.attrLen) == 0)
 821         {
 822             bInterfaceQry = true;
 823             if ((strncasecmp((char *)parseIter.valPos, OC_RSRVD_INTERFACE_DEFAULT, parseIter.valLen) == 0))
 824             {
 825                 bInterfaceMatch = true;
 826             }
 827             return (bInterfaceQry ? bInterfaceMatch: true);
 828         }
 829     }
 830
 831     return ((bOwnedQry ? bOwnedMatch : true) &&
 832             (bDeviceIDQry ? bDeviceIDMatch : true));
 833 }
 834
 835 static OCEntityHandlerResult HandleDoxmGetRequest (const OCEntityHandlerRequest * ehRequest)
 836 {
 837     OCEntityHandlerResult ehRet = OC_EH_OK;
 838
 839     OIC_LOG(DEBUG, TAG, "Doxm EntityHandle processing GET request");
 840
 841     //Checking if Get request is a query.
 842     if (ehRequest->query)
 843     {
 844         OIC_LOG_V(DEBUG,TAG,"query:%s",ehRequest->query);
 845         OIC_LOG(DEBUG, TAG, "HandleDoxmGetRequest processing query");
 846         if (!ValidateQuery(ehRequest->query))
 847         {
 848             ehRet = OC_EH_ERROR;
 849         }
 850     }
 851
 852     /*
 853      * For GET or Valid Query request return doxm resource CBOR payload.
 854      * For non-valid query return NULL json payload.
 855      * A device will 'always' have a default Doxm, so DoxmToCBORPayload will
 856      * return valid doxm resource json.
 857      */
 858     uint8_t *payload = NULL;
 859     size_t size = 0;
 860
 861     if (ehRet == OC_EH_OK)
 862     {
 863         if (OC_STACK_OK != DoxmToCBORPayload(gDoxm, &payload, &size, false))
 864         {
 865             OIC_LOG(WARNING, TAG, "DoxmToCBORPayload failed in HandleDoxmGetRequest");
 866         }
 867     }
 868
 869     OIC_LOG(DEBUG, TAG, "Send payload for doxm GET request");
 870     OIC_LOG_BUFFER(DEBUG, TAG, payload, size);
 871
 872     // Send response payload to request originator
 873     ehRet = ((SendSRMResponse(ehRequest, ehRet, payload, size)) == OC_STACK_OK) ?
 874                    OC_EH_OK : OC_EH_ERROR;
 875
 876     OICFree(payload);
 877
 878     return ehRet;
 879 }
 880
 881 static void updateWriteableProperty(const OicSecDoxm_t* src, OicSecDoxm_t* dst)
 882 {
 883     if(src && dst)
 884    {
 885         // update oxmsel
 886         dst->oxmSel = src->oxmSel;
 887
 888         //update owner
 889         memcpy(&(dst->owner), &(src->owner), sizeof(OicUuid_t));
 890
 891         //update rowner
 892         memcpy(&(dst->rownerID), &(src->rownerID), sizeof(OicUuid_t));
 893
 894         //update deviceuuid
 895         memcpy(&(dst->deviceID), &(src->deviceID), sizeof(OicUuid_t));
 896
 897         //Update owned status
 898         if(dst->owned != src->owned)
 899         {
 900             dst->owned = src->owned;
 901         }
 902
 903 #ifdef MULTIPLE_OWNER
 904         if(src->mom)
 905         {
 906             OIC_LOG(DEBUG, TAG, "dectected 'mom' property");
 907             if(NULL == dst->mom)
 908             {
 909                 dst->mom = (OicSecMom_t*)OICCalloc(1, sizeof(OicSecMom_t));
 910                 if(NULL != dst->mom)
 911                 {
 912                     dst->mom->mode = src->mom->mode;
 913                 }
 914             }
 915         }
 916 #endif //MULTIPLE_OWNER
 917     }
 918 }
 919
 920 #if defined(__WITH_DTLS__) || defined (__WITH_TLS__)
 921 #ifdef MULTIPLE_OWNER
 922 /**
 923  * Internal function to get number of sub-owner
 924  */
 925 static size_t GetSubOwnerSize()
 926 {
 927     OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
 928
 929     size_t numberOfSubOwner = 0;
 930
 931     if (gDoxm && gDoxm->subOwners)
 932     {
 933         OicSecSubOwner_t* subowner = NULL;
 934         LL_FOREACH(gDoxm->subOwners, subowner)
 935         {
 936             numberOfSubOwner++;
 937         }
 938     }
 939
 940     OIC_LOG_V(DEBUG, TAG, "Numer of registered sub-owner=%zd", numberOfSubOwner);
 941     OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
 942
 943     return numberOfSubOwner;
 944 }
 945
 946 /**
 947  * Callback function to handle MOT DTLS handshake result.
 948  * @param[out]   endpoint           remote device information.
 949  * @param[out]   errorInfo        CA Error information.
 950  */
 951 void MultipleOwnerDTLSHandshakeCB(const CAEndpoint_t *endpoint,
 952                                 const CAErrorInfo_t *errorInfo)
 953 {
 954     OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
 955     if (!endpoint || !errorInfo)
 956     {
 957         OIC_LOG(ERROR, TAG, "Invalid param");
 958         return;
 959     }
 960
 961     if (!gDoxm)
 962     {
 963         OIC_LOG_V(ERROR, TAG, "%s: gDoxm is NULL", __func__);
 964         return;
 965     }
 966
 967     if ((CA_STATUS_OK == errorInfo->result) && (true == gDoxm->owned)
 968         && (OIC_PRECONFIG_PIN == gDoxm->oxmSel) && (NULL != gDoxm->mom)
 969         && (OIC_MULTIPLE_OWNER_DISABLE != gDoxm->mom->mode) && (CA_ADAPTER_TCP != endpoint->adapter))
 970     {
 971         OIC_LOG_V(INFO, TAG, "DTLS session established for sub-owner authentication : (%s:%d)",
 972                   endpoint->addr, endpoint->port);
 973
 974         const CASecureEndpoint_t* authenticatedSubOwnerInfo = CAGetSecureEndpointData(endpoint);
 975         if (authenticatedSubOwnerInfo)
 976         {
 977             if (0 == memcmp(authenticatedSubOwnerInfo->identity.id, gDoxm->owner.id,
 978                             authenticatedSubOwnerInfo->identity.id_length))
 979             {
 980                 OIC_LOG(WARNING, TAG, "Super owner tried MOT, this request will be ignored.");
 981                 return;
 982             }
 983
 984             OicSecSubOwner_t* subOwnerInst = NULL;
 985             LL_FOREACH(gDoxm->subOwners, subOwnerInst)
 986             {
 987                 if(0 == memcmp(subOwnerInst->uuid.id,
 988                                authenticatedSubOwnerInfo->identity.id,
 989                                authenticatedSubOwnerInfo->identity.id_length))
 990                 {
 991                     break;
 992                 }
 993             }
 994
 995             if (NULL == subOwnerInst)
 996             {
 997                 subOwnerInst = (OicSecSubOwner_t*)OICCalloc(1, sizeof(OicSecSubOwner_t));
 998                 if (subOwnerInst)
 999                 {
1000                     char* strUuid = NULL;
1001                     if (OC_STACK_OK != ConvertUuidToStr(&subOwnerInst->uuid, &strUuid))
1002                     {
1003                         OIC_LOG(WARNING, TAG, "ConvertUuidToStr error");
1004                     }
1005                     OIC_LOG_V(DEBUG, TAG, "Adding New SubOwner(%s)", strUuid);
1006
1007                     if (gMaxSubOwnerSize > GetSubOwnerSize())
1008                     {
1009                         memcpy(subOwnerInst->uuid.id, authenticatedSubOwnerInfo->identity.id,
1010                                authenticatedSubOwnerInfo->identity.id_length);
1011                         LL_APPEND(gDoxm->subOwners, subOwnerInst);
1012                         if (!UpdatePersistentStorage(gDoxm))
1013                         {
1014                             OIC_LOG(ERROR, TAG, "Failed to register SubOwner UUID into Doxm");
1015                         }
1016                     }
1017                     else
1018                     {
1019                         OIC_LOG_V(ERROR, TAG, "Number of sub-owner exceeded : (MAX SIZE=%zd)", gMaxSubOwnerSize);
1020
1021                         //Close DTLS session
1022                         if (CA_STATUS_OK != CAcloseSslSession(endpoint))
1023                         {
1024                             OIC_LOG_V(ERROR, TAG, "CAcloseSslSession error for [%s:%d]", endpoint->addr, endpoint->port);
1025                         }
1026
1027                         //Remove credential
1028                         if (OC_STACK_RESOURCE_DELETED != RemoveCredential(&subOwnerInst->uuid))
1029                         {
1030                             OIC_LOG_V(ERROR, TAG, "RemoveCredential error for [%s]", strUuid);
1031                         }
1032
1033                         // TODO: How to send error to client side?
1034                     }
1035
1036                     OICFree(strUuid);
1037                 }
1038             }
1039         }
1040     }
1041
1042     if(CA_STATUS_OK != CAregisterPskCredentialsHandler(GetDtlsPskCredentials))
1043     {
1044         OIC_LOG(WARNING, TAG, "Failed to revert the DTLS credential handler");
1045     }
1046
1047     OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
1048 }
1049 #endif //MULTIPLE_OWNER
1050 #endif // defined(__WITH_DTLS__) || defined (__WITH_TLS__)
1051
1052 /**
1053  * Function to validate oxmsel with oxms.
1054  *
1055  * @param[in] supportedMethods   Array of supported methods
1056  * @param[in] numberOfMethods   number of supported methods
1057  * @param[out]  selectedMethod         Selected methods
1058  * @return  TRUE on success
1059  */
1060 static bool ValidateOxmsel(const OicSecOxm_t *supportedMethods,
1061         size_t numberOfMethods, OicSecOxm_t *selectedMethod)
1062 {
1063     bool isValidOxmsel = false;
1064
1065     OIC_LOG(DEBUG, TAG, "IN ValidateOxmsel");
1066     if (numberOfMethods == 0 || !supportedMethods)
1067     {
1068         OIC_LOG(WARNING, TAG, "Could not find a supported OxM.");
1069         return isValidOxmsel;
1070     }
1071
1072     for (size_t i = 0; i < numberOfMethods; i++)
1073     {
1074             if (*selectedMethod  == supportedMethods[i])
1075             {
1076                 isValidOxmsel = true;
1077                 break;
1078             }
1079     }
1080     if (!isValidOxmsel)
1081     {
1082         OIC_LOG(ERROR, TAG, "Not allowed Oxmsel.");
1083         return isValidOxmsel;
1084     }
1085
1086     OIC_LOG(DEBUG, TAG, "OUT ValidateOxmsel");
1087
1088     return isValidOxmsel;
1089 }
1090
1091 void SetInformOxmSelCB(InformOxmSelectedCallback_t informOxmSelCB)
1092 {
1093     OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
1094     g_InformOxmSelectedCallback = informOxmSelCB;
1095     OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
1096 }
1097
1098 void UnsetInformOxmSelCB()
1099 {
1100     OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
1101     g_InformOxmSelectedCallback = NULL;
1102     OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
1103 }
1104
1105 #if defined(__WITH_DTLS__) || defined (__WITH_TLS__)
1106 static OCEntityHandlerResult HandleDoxmPostRequest(OCEntityHandlerRequest * ehRequest);
1107
1108 static void DestroyEntityHandlerRequest(OCEntityHandlerRequest * ehRequest)
1109 {
1110     if (ehRequest == NULL) {
1111         OIC_LOG(WARNING, TAG, "ehRequest is NULL");
1112         return;
1113     }
1114
1115     OICFree(ehRequest->query);
1116
1117     if (ehRequest->payload) {
1118         OICFree(((OCSecurityPayload *)ehRequest->payload)->securityData);
1119         OICFree(ehRequest->payload);
1120     }
1121
1122     OICFree(ehRequest);
1123 }
1124
1125 void * WaitConfirm(OCEntityHandlerRequest * ehRequest)
1126 {
1127     bool confirmResult = false, confirmState = false;
1128
1129     oc_mutex_lock(g_mutexWait);
1130     oc_cond_wait(g_condWait, g_mutexWait);
1131     oc_cond_free(g_condWait);
1132     g_condWait = NULL;
1133
1134     oc_mutex_unlock(g_mutexWait);
1135     oc_mutex_free(g_mutexWait);
1136     g_mutexWait = NULL;
1137
1138     g_isConfirmResult = true;
1139     GetAsyncVerifyUserResult(&confirmResult, &confirmState);
1140     if (confirmResult == true)
1141     {
1142         gConfirmState = CONFIRM_STATE_ACCEPTED;
1143         HandleDoxmPostRequest(ehRequest);
1144         g_isConfirmResult = false;
1145         return NULL;
1146     }
1147     else
1148     {
1149         gConfirmState = CONFIRM_STATE_DENIED;
1150         HandleDoxmPostRequest(ehRequest);
1151         g_isConfirmResult = false;
1152         return NULL;
1153     }
1154
1155     DestroyEntityHandlerRequest(ehRequest);
1156
1157     return NULL;
1158 }
1159
1160 static OCEntityHandlerRequest *CopyRequest(OCEntityHandlerRequest *entityHandlerRequest)
1161 {
1162     OIC_LOG(INFO, TAG, "Copying received request for slow response");
1163
1164     if (!entityHandlerRequest)
1165     {
1166         OIC_LOG_V(ERROR, TAG, "%s: entityHandlerRequest is NULL", __func__);
1167         return NULL;
1168     }
1169
1170     OCEntityHandlerRequest *copyOfRequest =
1171             (OCEntityHandlerRequest *)OICCalloc(1, sizeof(OCEntityHandlerRequest));
1172     if(!copyOfRequest)
1173     {
1174         OIC_LOG(ERROR, TAG, "Copy failed due to allocation failure");
1175         return NULL;
1176     }
1177
1178     memcpy(copyOfRequest, entityHandlerRequest, sizeof(OCEntityHandlerRequest));
1179
1180     if (entityHandlerRequest->query)
1181     {
1182         copyOfRequest->query = OICStrdup(entityHandlerRequest->query);
1183         if(!copyOfRequest->query)
1184         {
1185             OIC_LOG(ERROR, TAG, "Copy failed due to allocation failure");
1186             OICFree(copyOfRequest);
1187             return NULL;
1188         }
1189     }
1190
1191     if (entityHandlerRequest->payload)
1192     {
1193         copyOfRequest->payload =
1194                 (OCSecurityPayload *)OICCalloc(1, sizeof(OCSecurityPayload));
1195         if(!copyOfRequest->payload)
1196         {
1197             OIC_LOG(ERROR, TAG, "Copy failed due to allocation failure");
1198             OICFree(copyOfRequest->query);
1199             OICFree(copyOfRequest);
1200             return NULL;
1201         }
1202
1203         if (((OCSecurityPayload *)entityHandlerRequest->payload)->payloadSize)
1204         {
1205             ((OCSecurityPayload *)copyOfRequest->payload)->securityData =
1206                     (uint8_t *)OICCalloc(1, ((OCSecurityPayload *)entityHandlerRequest->payload)->payloadSize);
1207             if(!((OCSecurityPayload *)copyOfRequest->payload)->securityData)
1208             {
1209                 OIC_LOG(ERROR, TAG, "Copy failed due to allocation failure");
1210                 OICFree(copyOfRequest->payload);
1211                 OICFree(copyOfRequest->query);
1212                 OICFree(copyOfRequest);
1213                 return NULL;
1214             }
1215
1216             memcpy(((OCSecurityPayload *)copyOfRequest->payload)->securityData,
1217                   ((OCSecurityPayload *)entityHandlerRequest->payload)->securityData,
1218                   ((OCSecurityPayload *)entityHandlerRequest->payload)->payloadSize);
1219
1220             ((OCSecurityPayload *)(copyOfRequest->payload))->payloadSize =
1221                     ((OCSecurityPayload *)(entityHandlerRequest->payload))->payloadSize;
1222         }
1223
1224         copyOfRequest->payload->type = entityHandlerRequest->payload->type;
1225         copyOfRequest->messageID = entityHandlerRequest->messageID;
1226     }
1227
1228     // Ignore vendor specific header options for example
1229     copyOfRequest->numRcvdVendorSpecificHeaderOptions = 0;
1230     copyOfRequest->rcvdVendorSpecificHeaderOptions = NULL;
1231
1232     if (copyOfRequest)
1233     {
1234         OIC_LOG(INFO, TAG, "Copied client request");
1235     }
1236     else
1237     {
1238         OIC_LOG(ERROR, TAG, "Error copying client request");
1239     }
1240     return copyOfRequest;
1241 }
1242 #endif // defined(__WITH_DTLS__) || defined (__WITH_TLS__)
1243
1244 static OCEntityHandlerResult HandleDoxmPostRequest(OCEntityHandlerRequest * ehRequest)
1245 {
1246     OIC_LOG (DEBUG, TAG, "Doxm EntityHandle  processing POST request");
1247     OCEntityHandlerResult ehRet = OC_EH_ERROR;
1248     OicUuid_t emptyOwner = {.id = {0} };
1249     static uint16_t previousMsgId = 0;
1250     bool isDuplicatedMsg = false;
1251
1252     /*
1253      * Convert CBOR Doxm data into binary. This will also validate
1254      * the Doxm data received.
1255      */
1256     OicSecDoxm_t *newDoxm = NULL;
1257
1258     if (ehRequest->payload)
1259     {
1260         uint8_t *payload = ((OCSecurityPayload *)ehRequest->payload)->securityData;
1261         size_t size = ((OCSecurityPayload *)ehRequest->payload)->payloadSize;
1262         bool roParsed = false;
1263         OCStackResult res = CBORPayloadToDoxmBin(payload, size, &newDoxm, &roParsed);
1264         if (newDoxm && OC_STACK_OK == res)
1265         {
1266             /*
1267              * message ID is supported for CoAP over UDP only according to RFC 7252
1268              * So we should check message ID to prevent duplicate request handling in case of OC_ADAPTER_IP.
1269              * In case of other transport adapter, duplicate message check is not required.
1270              */
1271             if (OC_ADAPTER_IP == ehRequest->devAddr.adapter &&
1272                  previousMsgId == ehRequest->messageID && g_isConfirmResult == false)
1273             {
1274                 isDuplicatedMsg = true;
1275             }
1276
1277             if (isDuplicatedMsg && ehRequest->messageID == gConfirmMsgId)
1278             {
1279                 if (CONFIRM_STATE_WAIT == gConfirmState)
1280                 {
1281                     OIC_LOG(DEBUG, TAG, "Confirm callback already invoked.");
1282                     OIC_LOG(DEBUG, TAG, "This request will be ignored.");
1283                     DeleteDoxmBinData(newDoxm);
1284                     return OC_EH_OK;
1285                 }
1286                 else
1287                 {
1288                     OIC_LOG_V(DEBUG, TAG, "Confirm request already done, Confirm Result = %s", (CONFIRM_STATE_ACCEPTED == gConfirmState ? "ACCEPTED" : "DENIED"));
1289                     ehRet = (CONFIRM_STATE_ACCEPTED == gConfirmState ? OC_EH_OK : OC_EH_NOT_ACCEPTABLE);
1290                     goto exit;
1291                 }
1292             }
1293
1294             // Check request on RO property
1295             if (true == roParsed)
1296             {
1297                 OIC_LOG(ERROR, TAG, "Not acceptable request because of read-only propertys");
1298                 ehRet = OC_EH_NOT_ACCEPTABLE;
1299                 goto exit;
1300             }
1301
1302             VERIFY_NON_NULL(TAG, gDoxm, ERROR);
1303
1304             // in owned state
1305             if (true == gDoxm->owned)
1306             {
1307                 if (false == ValidateOxmsel(gDoxm->oxm, gDoxm->oxmLen, &newDoxm->oxmSel))
1308                 {
1309                     OIC_LOG(ERROR, TAG, "Not acceptable request because oxmsel does not support on Server");
1310                     ehRet = OC_EH_NOT_ACCEPTABLE;
1311                     goto exit;
1312                 }
1313                 //Update gDoxm based on newDoxm
1314                 updateWriteableProperty(newDoxm, gDoxm);
1315
1316 #if defined(__WITH_DTLS__) || defined (__WITH_TLS__)
1317 #ifdef MULTIPLE_OWNER
1318                 //handle mom
1319                 if(gDoxm->mom)
1320                 {
1321                     if(OIC_MULTIPLE_OWNER_DISABLE != gDoxm->mom->mode)
1322                     {
1323                         CAResult_t caRes = CA_STATUS_FAILED;
1324                         if(OIC_PRECONFIG_PIN == gDoxm->oxmSel || OIC_RANDOM_DEVICE_PIN == gDoxm->oxmSel)
1325                         {
1326                             caRes = CAEnableAnonECDHCipherSuite(false);
1327                             VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
1328                             OIC_LOG(INFO, TAG, "ECDH_ANON CipherSuite is DISABLED");
1329
1330                             caRes = CASelectCipherSuite((uint16_t)MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256, ehRequest->devAddr.adapter);
1331                             VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
1332                             OIC_LOG(INFO, TAG, "ECDHE_PSK CipherSuite will be used for MOT");
1333
1334                             //Set the device id to derive temporal PSK
1335                             SetUuidForPinBasedOxm(&gDoxm->deviceID);
1336                         }
1337                         else
1338                         {
1339                             OIC_LOG(WARNING, TAG, "Unsupported OxM for Multiple Ownership Transfer.");
1340                         }
1341
1342                         CAregisterSslHandshakeCallback(MultipleOwnerDTLSHandshakeCB);
1343                     }
1344                     else
1345                     {
1346                         //if MOM is disabled, revert the DTLS handshake callback
1347                         if(CA_STATUS_OK != CAregisterSslHandshakeCallback(NULL))
1348                         {
1349                             OIC_LOG(WARNING, TAG, "Error while revert the DTLS Handshake Callback.");
1350                         }
1351                     }
1352                 }
1353
1354                 if(newDoxm->subOwners)
1355                 {
1356                     OicSecSubOwner_t* subowner = NULL;
1357                     OicSecSubOwner_t* temp = NULL;
1358
1359                     OIC_LOG(DEBUG, TAG, "dectected 'subowners' property");
1360
1361                     if(gDoxm->subOwners)
1362                     {
1363                         LL_FOREACH_SAFE(gDoxm->subOwners, subowner, temp)
1364                         {
1365                             LL_DELETE(gDoxm->subOwners, subowner);
1366                             OICFree(subowner);
1367                         }
1368                     }
1369
1370                     subowner = NULL;
1371                     temp = NULL;
1372                     LL_FOREACH_SAFE(newDoxm->subOwners, subowner, temp)
1373                     {
1374                         LL_DELETE(newDoxm->subOwners, subowner);
1375                         LL_APPEND(gDoxm->subOwners, subowner);
1376                     }
1377                 }
1378 #endif //MULTIPLE_OWNER
1379 #endif // defined(__WITH_DTLS__) || defined (__WITH_TLS__)
1380
1381                 //Update new state in persistent storage
1382                 if (UpdatePersistentStorage(gDoxm) == true)
1383                 {
1384                     ehRet = OC_EH_OK;
1385                 }
1386                 else
1387                 {
1388                     OIC_LOG(ERROR, TAG, "Failed to update DOXM in persistent storage");
1389                     ehRet = OC_EH_ERROR;
1390                 }
1391                 goto exit;
1392             }
1393
1394             // in unowned state
1395             if ((false == gDoxm->owned) && (false == newDoxm->owned))
1396             {
1397                 if (false == ValidateOxmsel(gDoxm->oxm, gDoxm->oxmLen, &newDoxm->oxmSel))
1398                 {
1399                     OIC_LOG(ERROR, TAG, "Not acceptable request because oxmsel does not support on Server");
1400                     ehRet = OC_EH_NOT_ACCEPTABLE;
1401                     goto exit;
1402                 }
1403                 if (g_InformOxmSelectedCallback)
1404                 {
1405                     g_InformOxmSelectedCallback(newDoxm->oxmSel);
1406                 }
1407
1408 #if defined (__WITH_TLS__) || defined(__WITH_DTLS__)
1409                 if (memcmp(&(newDoxm->owner), &emptyOwner, sizeof(OicUuid_t)) == 0)
1410                 {
1411                     InvokeOtmEventHandler(ehRequest->devAddr.addr, ehRequest->devAddr.port,
1412                                           NULL, OIC_OTM_STARTED);
1413                 }
1414                 else
1415                 {
1416                     OIC_LOG_V(INFO, TAG, "%s: request owner not empty",__func__);
1417                     char* strUuid = NULL;
1418                     if (OC_STACK_OK == ConvertUuidToStr(&newDoxm->owner, &strUuid))
1419                     {
1420                         OIC_LOG_V(INFO, TAG, "%s: request owner: %s",__func__, strUuid);
1421                         OICFree(strUuid);
1422                     }
1423                 }
1424 #endif
1425
1426                 if (OIC_JUST_WORKS == newDoxm->oxmSel || OIC_MV_JUST_WORKS == newDoxm->oxmSel)
1427                 {
1428                     /*
1429                      * If current state of the device is un-owned, enable
1430                      * anonymous ECDH cipher in tinyDTLS so that Provisioning
1431                      * tool can initiate JUST_WORKS ownership transfer process.
1432                      */
1433                     if (memcmp(&(newDoxm->owner), &emptyOwner, sizeof(OicUuid_t)) == 0)
1434                     {
1435                         gDoxm->oxmSel = newDoxm->oxmSel;
1436                         //Update new state in persistent storage
1437                         if ((UpdatePersistentStorage(gDoxm) == true))
1438                         {
1439                             ehRet = OC_EH_OK;
1440                         }
1441                         else
1442                         {
1443                             OIC_LOG(WARNING, TAG, "Failed to update DOXM in persistent storage");
1444                             ehRet = OC_EH_ERROR;
1445                             goto exit;
1446                         }
1447                         OIC_LOG (INFO, TAG, "Doxm EntityHandle  enabling AnonECDHCipherSuite");
1448 #if defined(__WITH_DTLS__) || defined(__WITH_TLS__)
1449                         ehRet = (CAEnableAnonECDHCipherSuite(true) == CA_STATUS_OK) ? OC_EH_OK : OC_EH_ERROR;
1450 #endif // __WITH_DTLS__ or __WITH_TLS__
1451                         goto exit;
1452                     }
1453                     else
1454                     {
1455 #if defined(__WITH_DTLS__) || defined(__WITH_TLS__)
1456                         //Save the owner's UUID to derive owner credential
1457                         memcpy(&(gDoxm->owner), &(newDoxm->owner), sizeof(OicUuid_t));
1458
1459                         // Update new state in persistent storage
1460                         if (true == UpdatePersistentStorage(gDoxm))
1461                         {
1462                             ehRet = OC_EH_OK;
1463                         }
1464                         else
1465                         {
1466                             OIC_LOG(ERROR, TAG, "Failed to update DOXM in persistent storage");
1467                             ehRet = OC_EH_ERROR;
1468                             goto exit;
1469                         }
1470
1471                         /*
1472                          * Disable anonymous ECDH cipher in tinyDTLS since device is now
1473                          * in owned state.
1474                          */
1475                         CAResult_t caRes = CA_STATUS_OK;
1476                         caRes = CAEnableAnonECDHCipherSuite(false);
1477                         VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
1478                         OIC_LOG(INFO, TAG, "ECDH_ANON CipherSuite is DISABLED");
1479
1480                         //In case of Mutual Verified Just-Works, verify mutualVerifNum
1481                         if (OIC_MV_JUST_WORKS == newDoxm->oxmSel && false == newDoxm->owned &&
1482                             false == isDuplicatedMsg)
1483                         {
1484                             uint8_t preMutualVerifNum[OWNER_PSK_LENGTH_128] = {0};
1485                             uint8_t mutualVerifNum[MUTUAL_VERIF_NUM_LEN] = {0};
1486                             OicUuid_t deviceID = {.id = {0}};
1487
1488                             //Generate mutualVerifNum
1489                             OCServerRequest * request = GetServerRequestUsingHandle(ehRequest->requestHandle);
1490
1491                             char label[LABEL_LEN] = {0};
1492                             snprintf(label, LABEL_LEN, "%s%s", MUTUAL_VERIF_NUM, OXM_MV_JUST_WORKS);
1493                             if (OC_STACK_OK != GetDoxmDeviceID(&deviceID))
1494                             {
1495                                 OIC_LOG(ERROR, TAG, "Error while retrieving Owner's device ID");
1496                                 ehRet = OC_EH_ERROR;
1497                                 goto exit;
1498
1499                             }
1500
1501                             CAResult_t pskRet = CAGenerateOwnerPSK((CAEndpoint_t *)&request->devAddr,
1502                                     (uint8_t *)label,
1503                                     strlen(label),
1504                                     gDoxm->owner.id, sizeof(gDoxm->owner.id),
1505                                     gDoxm->deviceID.id, sizeof(gDoxm->deviceID.id),
1506                                     preMutualVerifNum, OWNER_PSK_LENGTH_128);
1507                             if (CA_STATUS_OK != pskRet)
1508                             {
1509                                 OIC_LOG(WARNING, TAG, "Failed to remove the invaild owner credential");
1510                                 ehRet = OC_EH_ERROR;
1511                                 goto exit;
1512
1513                             }
1514
1515                             memcpy(mutualVerifNum, preMutualVerifNum + OWNER_PSK_LENGTH_128 - sizeof(mutualVerifNum),
1516                                     sizeof(mutualVerifNum));
1517
1518                             gConfirmMsgId = ehRequest->messageID;
1519                             gConfirmState = CONFIRM_STATE_WAIT;
1520                             //Wait for user confirmation
1521                             if (OC_STACK_OK != VerifyOwnershipTransfer(mutualVerifNum, DISPLAY_NUM | USER_CONFIRM))
1522                             {
1523                                 ehRet = OC_EH_NOT_ACCEPTABLE;
1524                                 gConfirmState = CONFIRM_STATE_DENIED;
1525                             }
1526                             else
1527                             {
1528                                 ehRet = OC_EH_OK;
1529                                 gConfirmState = CONFIRM_STATE_ACCEPTED;
1530                             }
1531                         }
1532
1533 #endif // __WITH_DTLS__ or __WITH_TLS__
1534                     }
1535                 }
1536                 else if (OIC_RANDOM_DEVICE_PIN == newDoxm->oxmSel)
1537                 {
1538                     /*
1539                      * If current state of the device is un-owned, enable
1540                      * anonymous ECDH cipher in tinyDTLS so that Provisioning
1541                      * tool can initiate JUST_WORKS ownership transfer process.
1542                      */
1543                     if(memcmp(&(newDoxm->owner), &emptyOwner, sizeof(OicUuid_t)) == 0)
1544                     {
1545                         gDoxm->oxmSel = newDoxm->oxmSel;
1546                         //Update new state in persistent storage
1547                         if ((UpdatePersistentStorage(gDoxm) == true))
1548                         {
1549                             ehRet = OC_EH_OK;
1550                         }
1551                         else
1552                         {
1553                             OIC_LOG(WARNING, TAG, "Failed to update DOXM in persistent storage");
1554                             ehRet = OC_EH_ERROR;
1555                         }
1556
1557 #if defined(__WITH_DTLS__) || defined(__WITH_TLS__)
1558                         CAResult_t caRes = CA_STATUS_OK;
1559
1560                         caRes = CAEnableAnonECDHCipherSuite(false);
1561                         VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
1562                         OIC_LOG(INFO, TAG, "ECDH_ANON CipherSuite is DISABLED");
1563
1564                         caRes = CASelectCipherSuite(MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256,
1565                                                     ehRequest->devAddr.adapter);
1566                         VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
1567
1568                         if (!isDuplicatedMsg)
1569                         {
1570                             char ranPin[OXM_RANDOM_PIN_MAX_SIZE + 1] = {0};
1571                             if (OC_STACK_OK == GeneratePin(ranPin, sizeof(ranPin)))
1572                             {
1573                                 //Set the device id to derive temporal PSK
1574                                 SetUuidForPinBasedOxm(&gDoxm->deviceID);
1575
1576                                 /**
1577                                  * Since PSK will be used directly by DTLS layer while PIN based ownership transfer,
1578                                  * Credential should not be saved into SVR.
1579                                  * For this reason, use a temporary get_psk_info callback to random PIN OxM.
1580                                  */
1581                                 caRes = CAregisterPskCredentialsHandler(GetDtlsPskForRandomPinOxm);
1582                                 VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
1583                                 ehRet = OC_EH_OK;
1584                             }
1585                             else
1586                             {
1587                                 OIC_LOG(ERROR, TAG, "Failed to generate random PIN");
1588                                 ehRet = OC_EH_ERROR;
1589                             }
1590                         }
1591 #endif // __WITH_DTLS__ or __WITH_TLS__
1592                     }
1593 #if defined(__WITH_DTLS__) || defined(__WITH_TLS__)
1594                     else
1595                     {
1596                         //Save the owner's UUID to derive owner credential
1597                         memcpy(&(gDoxm->owner), &(newDoxm->owner), sizeof(OicUuid_t));
1598
1599                         // In case of random-pin based OTM, close the PIN display if callback is registered.
1600                         if (!isDuplicatedMsg)
1601                         {
1602                             ClosePinDisplay();
1603                         }
1604
1605                         //Update new state in persistent storage
1606                         if (UpdatePersistentStorage(gDoxm) == true)
1607                         {
1608                             ehRet = OC_EH_OK;
1609                         }
1610                         else
1611                         {
1612                             OIC_LOG(ERROR, TAG, "Failed to update DOXM in persistent storage");
1613                             ehRet = OC_EH_ERROR;
1614                         }
1615                     }
1616 #endif // __WITH_DTLS__ or __WITH_TLS__
1617                 }
1618 #if defined(__WITH_DTLS__) || defined (__WITH_TLS__)
1619                 else if (OIC_MANUFACTURER_CERTIFICATE ==  newDoxm->oxmSel || OIC_CON_MFG_CERT == newDoxm->oxmSel)
1620                 {
1621                     if (CONFIRM_STATE_ACCEPTED != gConfirmState && CONFIRM_STATE_DENIED != gConfirmState)
1622                     {
1623                         //Get user confirmation
1624                         if (false == newDoxm->owned &&
1625                             false == isDuplicatedMsg &&
1626                             memcmp(&(newDoxm->owner), &emptyOwner, sizeof(OicUuid_t)) != 0)
1627                         {
1628                             gConfirmMsgId = ehRequest->messageID;
1629                             gConfirmState = CONFIRM_STATE_WAIT;
1630
1631                             if (OC_STACK_OK != VerifyUserConfirm())
1632                             {
1633                                 if (OC_STACK_OK != VerifyOwnershipTransfer(NULL, USER_CONFIRM))
1634                                 {
1635                                     ehRet = OC_EH_NOT_ACCEPTABLE;
1636                                     gConfirmState = CONFIRM_STATE_DENIED;
1637                                     goto exit;
1638                                 }
1639                             }
1640                             else
1641                             {
1642                                 OCEntityHandlerRequest * ehRequestCopy = CopyRequest(ehRequest);
1643                                 VERIFY_NON_NULL(TAG, ehRequestCopy, ERROR);
1644
1645                                 g_condWait = oc_cond_new();
1646                                 g_mutexWait = oc_mutex_new();
1647                                 if (oc_thread_new (&g_waitConfirmThreadId, WaitConfirm, ehRequestCopy))
1648                                 {
1649                                     oc_thread_detach(g_waitConfirmThreadId);
1650                                 }
1651
1652                                 previousMsgId = ehRequest->messageID;
1653
1654                                 return OC_EH_SLOW;
1655                             }
1656                         }
1657                     }
1658                     else if (CONFIRM_STATE_DENIED == gConfirmState)
1659                     {
1660                         ehRet = OC_EH_NOT_ACCEPTABLE;
1661                         goto exit;
1662                     }
1663
1664                     //Save the owner's UUID to derive owner credential
1665                     memcpy(&(gDoxm->owner), &(newDoxm->owner), sizeof(OicUuid_t));
1666                     gDoxm->oxmSel = newDoxm->oxmSel;
1667                     //Update new state in persistent storage
1668                     if (UpdatePersistentStorage(gDoxm))
1669                     {
1670                         ehRet = OC_EH_OK;
1671                     }
1672                     else
1673                     {
1674                         OIC_LOG(WARNING, TAG, "Failed to update DOXM in persistent storage");
1675                         ehRet = OC_EH_ERROR;
1676                     }
1677                     CAResult_t caRes = CAEnableAnonECDHCipherSuite(false);
1678                     VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
1679                     OIC_LOG(INFO, TAG, "ECDH_ANON CipherSuite is DISABLED");
1680
1681                     //Unset pre-selected ciphersuite, if any
1682                     caRes = CASelectCipherSuite(0, ehRequest->devAddr.adapter);
1683                     VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
1684                     OIC_LOG(DEBUG, TAG, "No ciphersuite preferred");
1685
1686                     VERIFY_SUCCESS(TAG, CA_STATUS_OK == CAregisterPkixInfoHandler(GetManufacturerPkixInfo), ERROR);
1687                     VERIFY_SUCCESS(TAG, CA_STATUS_OK == CAregisterGetCredentialTypesHandler(InitManufacturerCipherSuiteList), ERROR);
1688                 }
1689 #endif // __WITH_DTLS__ or __WITH_TLS__
1690             }
1691
1692             /*
1693              * When current state of the device is un-owned and Provisioning
1694              * Tool is attempting to change the state to 'Owned' with a
1695              * qualified value for the field 'Owner'
1696              */
1697             if ((false == gDoxm->owned) && (true == newDoxm->owned) &&
1698                     (memcmp(&(gDoxm->owner), &(newDoxm->owner), sizeof(OicUuid_t)) == 0))
1699             {
1700                 //Change the SVR's resource owner as owner device.
1701                 OCStackResult ownerRes = SetAclRownerId(&gDoxm->owner);
1702                 if(OC_STACK_OK != ownerRes && OC_STACK_NO_RESOURCE != ownerRes)
1703                 {
1704                     ehRet = OC_EH_ERROR;
1705                     goto exit;
1706                 }
1707                 ownerRes = SetAmaclRownerId(&gDoxm->owner);
1708                 if(OC_STACK_OK != ownerRes && OC_STACK_NO_RESOURCE != ownerRes)
1709                 {
1710                     ehRet = OC_EH_ERROR;
1711                     goto exit;
1712                 }
1713                 ownerRes = SetCredRownerId(&gDoxm->owner);
1714                 if(OC_STACK_OK != ownerRes && OC_STACK_NO_RESOURCE != ownerRes)
1715                 {
1716                     ehRet = OC_EH_ERROR;
1717                     goto exit;
1718                 }
1719                 ownerRes = SetPstatRownerId(&gDoxm->owner);
1720                 if(OC_STACK_OK != ownerRes && OC_STACK_NO_RESOURCE != ownerRes)
1721                 {
1722                     ehRet = OC_EH_ERROR;
1723                     goto exit;
1724                 }
1725
1726                 gDoxm->owned = true;
1727                 memcpy(&gDoxm->rownerID, &gDoxm->owner, sizeof(OicUuid_t));
1728
1729                 // Update new state in persistent storage
1730                 if (UpdatePersistentStorage(gDoxm))
1731                 {
1732                     //Update default ACE of security resource to prevent anonymous user access.
1733                     if(OC_STACK_OK == UpdateDefaultSecProvACE())
1734                     {
1735                         ehRet = OC_EH_OK;
1736                     }
1737                     else
1738                     {
1739                         OIC_LOG(ERROR, TAG, "Failed to remove default ACL for security provisioning");
1740                         ehRet = OC_EH_ERROR;
1741                     }
1742                 }
1743                 else
1744                 {
1745                     OIC_LOG(ERROR, TAG, "Failed to update DOXM in persistent storage");
1746                     ehRet = OC_EH_ERROR;
1747                 }
1748 #if defined(__WITH_DTLS__) || defined (__WITH_TLS__)
1749                 if (OIC_MANUFACTURER_CERTIFICATE == gDoxm->oxmSel ||
1750                                             OIC_CON_MFG_CERT== gDoxm->oxmSel)
1751                 {
1752                     CAregisterPkixInfoHandler(GetPkixInfo);
1753                     CAregisterGetCredentialTypesHandler(InitCipherSuiteList);
1754                 }
1755
1756                 InvokeOtmEventHandler(ehRequest->devAddr.addr, ehRequest->devAddr.port,
1757                                       &gDoxm->owner, OIC_OTM_DONE);
1758 #endif // __WITH_DTLS__ or __WITH_TLS__
1759             }
1760         }
1761     }
1762
1763 exit:
1764     if(OC_EH_OK != ehRet)
1765     {
1766         /*
1767          * If some error is occured while ownership transfer,
1768          * ownership transfer related resource should be revert back to initial status.
1769         */
1770         if(gDoxm)
1771         {
1772             if(!gDoxm->owned)
1773             {
1774                 OIC_LOG(WARNING, TAG, "The operation failed during handle DOXM request");
1775
1776                 if (!isDuplicatedMsg)
1777                 {
1778 #if defined (__WITH_TLS__) || defined(__WITH_DTLS__)
1779                     InvokeOtmEventHandler(ehRequest->devAddr.addr, ehRequest->devAddr.port,
1780                                           NULL, OIC_OTM_ERROR);
1781 #endif
1782                     RestoreDoxmToInitState();
1783                     RestorePstatToInitState();
1784                     OIC_LOG(WARNING, TAG, "DOXM will be reverted.");
1785                 }
1786             }
1787         }
1788         else
1789         {
1790             OIC_LOG(ERROR, TAG, "Invalid DOXM resource.");
1791         }
1792     }
1793
1794     previousMsgId = ehRequest->messageID;
1795
1796 #if defined (__WITH_TLS__) || defined(__WITH_DTLS__)
1797     CAEndpoint_t peer = {0};
1798     OCDevAddr devAddr =  ehRequest->devAddr;
1799
1800     memcpy(&peer.addr, &devAddr.addr, sizeof(peer.addr));
1801     peer.port = devAddr.port;
1802     peer.adapter = (CATransportAdapter_t)devAddr.adapter;
1803
1804     if ((devAddr.flags & OC_FLAG_SECURE) && (false == CAIsExistSslPeer(&peer)))
1805     {
1806         OIC_LOG_V(WARNING, TAG, "Not Exist Peer");
1807         ehRet = OC_EH_OK;
1808     }
1809     else
1810     {
1811         //Send payload to request originator
1812         ehRet = ((SendSRMResponse(ehRequest, ehRet, NULL, 0)) == OC_STACK_OK) ?
1813             OC_EH_OK : OC_EH_ERROR;
1814     }
1815 #else
1816     //Send payload to request originator
1817     ehRet = ((SendSRMResponse(ehRequest, ehRet, NULL, 0)) == OC_STACK_OK) ?
1818         OC_EH_OK : OC_EH_ERROR;
1819 #endif
1820
1821     DeleteDoxmBinData(newDoxm);
1822
1823     return ehRet;
1824 }
1825
1826 #ifdef MULTIPLE_OWNER
1827 static OCEntityHandlerResult HandleDoxmDeleteRequest(const OCEntityHandlerRequest *ehRequest)
1828 {
1829     OIC_LOG(DEBUG, TAG, "Processing DoxmDeleteRequest");
1830
1831     OCEntityHandlerResult ehRet = OC_EH_BAD_REQ;
1832
1833     if (NULL == ehRequest->query)
1834     {
1835         return ehRet;
1836     }
1837
1838     OicParseQueryIter_t parseIter = { .attrPos=NULL };
1839     OicUuid_t subject = {.id={0}};
1840
1841     //Parsing REST query to get the subject
1842     ParseQueryIterInit((unsigned char *)ehRequest->query, &parseIter);
1843     while (GetNextQuery(&parseIter))
1844     {
1845         if (strncasecmp((char *)parseIter.attrPos, OIC_JSON_SUBOWNERID_NAME,
1846                 parseIter.attrLen) == 0)
1847         {
1848             if (0 == strncmp((const char*)parseIter.valPos, WILDCARD_RESOURCE_URI,
1849                              strlen(WILDCARD_RESOURCE_URI)))
1850             {
1851                 if(OC_STACK_RESOURCE_DELETED == RemoveSubOwner(&WILDCARD_SUBJECT_ID))
1852                 {
1853                     ehRet = OC_EH_RESOURCE_DELETED;
1854                 }
1855             }
1856             else
1857             {
1858                 OCStackResult ret = ConvertStrToUuid((const char*)parseIter.valPos, &subject);
1859                 VERIFY_SUCCESS(TAG, OC_STACK_OK == ret, ERROR);
1860
1861                 if(OC_STACK_RESOURCE_DELETED == RemoveSubOwner(&subject))
1862                 {
1863                     ehRet = OC_EH_RESOURCE_DELETED;
1864                 }
1865             }
1866         }
1867     }
1868
1869     //Send response to request originator
1870     ehRet = ((SendSRMResponse(ehRequest, ehRet, NULL, 0)) == OC_STACK_OK) ?
1871                    OC_EH_OK : OC_EH_ERROR;
1872
1873     return ehRet;
1874 exit:
1875     return OC_EH_ERROR;
1876 }
1877 #endif //MULTIPLE_OWNER
1878
1879 OCEntityHandlerResult DoxmEntityHandler(OCEntityHandlerFlag flag,
1880                                         OCEntityHandlerRequest * ehRequest,
1881                                         void* callbackParam)
1882 {
1883     (void)callbackParam;
1884     OCEntityHandlerResult ehRet = OC_EH_ERROR;
1885
1886     if(NULL == ehRequest)
1887     {
1888         return ehRet;
1889     }
1890
1891     oc_mutex_lock(g_mutexDoxm);
1892
1893     if(g_isDoxmNull)
1894     {
1895         oc_mutex_unlock(g_mutexDoxm);
1896         return OC_EH_SERVICE_UNAVAILABLE;
1897     }
1898
1899     if (flag & OC_REQUEST_FLAG)
1900     {
1901         OIC_LOG(DEBUG, TAG, "Flag includes OC_REQUEST_FLAG");
1902
1903         switch (ehRequest->method)
1904         {
1905             case OC_REST_GET:
1906                 ehRet = HandleDoxmGetRequest(ehRequest);
1907                 break;
1908
1909             case OC_REST_POST:
1910                 ehRet = HandleDoxmPostRequest(ehRequest);
1911                 break;
1912
1913 #ifdef MULTIPLE_OWNER
1914             case OC_REST_DELETE:
1915                 ehRet = HandleDoxmDeleteRequest(ehRequest);
1916                 break;
1917 #endif //MULTIPLE_OWNER
1918
1919             default:
1920                 ehRet = ((SendSRMResponse(ehRequest, ehRet, NULL, 0)) == OC_STACK_OK) ?
1921                                OC_EH_OK : OC_EH_ERROR;
1922                 break;
1923         }
1924
1925         oc_mutex_unlock(g_mutexDoxm);
1926     }
1927
1928     return ehRet;
1929 }
1930
1931 OCStackResult CreateDoxmResource()
1932 {
1933     OCStackResult ret = OCCreateResource(&gDoxmHandle,
1934                                          OIC_RSRC_TYPE_SEC_DOXM,
1935                                          OC_RSRVD_INTERFACE_DEFAULT,
1936                                          OIC_RSRC_DOXM_URI,
1937                                          DoxmEntityHandler,
1938                                          NULL,
1939                                          OC_SECURE |
1940                                          OC_DISCOVERABLE);
1941
1942     if (OC_STACK_OK != ret)
1943     {
1944         OIC_LOG (FATAL, TAG, "Unable to instantiate Doxm resource");
1945         DeInitDoxmResource();
1946     }
1947     return ret;
1948 }
1949
1950 /**
1951  * Checks if DeviceID is generated during provisioning for the new device.
1952  * If DeviceID is NULL then generates the new DeviceID.
1953  * Once DeviceID is assigned to the device it does not change for the lifetime of the device.
1954  */
1955 static OCStackResult CheckDeviceID()
1956 {
1957     OIC_LOG_V(DEBUG, TAG, "IN: %s", __func__);
1958
1959     OCStackResult ret = OC_STACK_ERROR;
1960     bool validId = false;
1961
1962     if (!gDoxm)
1963     {
1964         OIC_LOG_V(ERROR, TAG, "%s: gDoxm is NULL", __func__);
1965         return OC_STACK_INVALID_PARAM;
1966     }
1967
1968     for (uint8_t i = 0; i < UUID_LENGTH; i++)
1969     {
1970         if (gDoxm->deviceID.id[i] != 0)
1971         {
1972             validId = true;
1973             break;
1974         }
1975     }
1976
1977     if (!validId)
1978     {
1979         char* strUuid = NULL;
1980 #if defined(__WITH_DTLS__) || defined (__WITH_TLS__)
1981         //If seed value is exist, generate UUID using seed with SHA256
1982         if (0 != gUuidSeedSize)
1983         {
1984             uint8_t hashVal[MBEDTLS_MD_MAX_SIZE] = {0};
1985             mbedtls_md_context_t sha_ctx;
1986             int mbedret = 1;
1987
1988             OIC_LOG(DEBUG, TAG, "UUID will be generated using seed w/ SHA256");
1989             OIC_LOG(DEBUG, TAG, "Seed value : ");
1990             OIC_LOG_BUFFER(DEBUG, TAG, gUuidSeed, gUuidSeedSize);
1991
1992             mbedtls_md_init( &sha_ctx );
1993             mbedret = mbedtls_md_setup( &sha_ctx, mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 ), 1 );
1994             if (0 == mbedret)
1995             {
1996                 mbedtls_md_starts( &sha_ctx );
1997                 mbedtls_md_update( &sha_ctx, gUuidSeed, gUuidSeedSize);
1998                 mbedtls_md_finish(&sha_ctx, (unsigned char*)hashVal);
1999                 memcpy(gDoxm->deviceID.id, hashVal, sizeof(gDoxm->deviceID.id));
2000                 ret = OC_STACK_OK;
2001             }
2002             else
2003             {
2004                 OIC_LOG_V(ERROR, TAG,  "mbedtls_md_setup() returned -0x%04x\n", -mbedret);
2005                 ret = OC_STACK_ERROR;
2006             }
2007             mbedtls_md_free( &sha_ctx );
2008         }
2009         else
2010         {
2011             if (RAND_UUID_OK != OCGenerateUuid(gDoxm->deviceID.id))
2012             {
2013                 OIC_LOG(FATAL, TAG, "Generate UUID for Server Instance failed!");
2014                 return OC_STACK_ERROR;
2015             }
2016             ret = OC_STACK_OK;
2017         }
2018 #else
2019         if (RAND_UUID_OK != OCGenerateUuid(gDoxm->deviceID.id))
2020         {
2021             OIC_LOG(FATAL, TAG, "Generate UUID for Server Instance failed!");
2022             return ret;
2023         }
2024         ret = OC_STACK_OK;
2025 #endif
2026
2027         if (OC_STACK_OK == ConvertUuidToStr(&gDoxm->deviceID, &strUuid))
2028         {
2029             OIC_LOG_V(DEBUG, TAG, "Generated device UUID is [%s]", strUuid);
2030             OICFree(strUuid);
2031         }
2032         else
2033         {
2034             OIC_LOG(WARNING, TAG, "Failed to convert UUID to string");
2035         }
2036
2037
2038         if (!UpdatePersistentStorage(gDoxm))
2039         {
2040             //TODO: After registering PSI handler in all samples, do ret = OC_STACK_OK here.
2041             OIC_LOG(FATAL, TAG, "UpdatePersistentStorage failed!");
2042         }
2043     }
2044     else
2045     {
2046         ret = OC_STACK_OK;
2047     }
2048
2049     OIC_LOG_V(DEBUG, TAG, "OUT: %s", __func__);
2050
2051     return ret;
2052 }
2053
2054 /**
2055  * Get the default value.
2056  *
2057  * @return the default value of doxm, @ref OicSecDoxm_t.
2058  */
2059 static OicSecDoxm_t* GetDoxmDefault()
2060 {
2061     OIC_LOG(DEBUG, TAG, "GetDoxmToDefault");
2062     return &gDefaultDoxm;
2063 }
2064
2065 const OicSecDoxm_t* GetDoxmResourceData()
2066 {
2067     return gDoxm;
2068 }
2069
2070 #if defined(__WITH_DTLS__) && defined(MULTIPLE_OWNER)
2071 /**
2072  * Internal API to prepare MOT
2073  */
2074 static void PrepareMOT(const OicSecDoxm_t* doxm)
2075 {
2076     OIC_LOG(INFO, TAG, "IN PrepareMOT");
2077     VERIFY_NON_NULL(TAG, doxm, ERROR);
2078
2079     if(true == doxm->owned && NULL != doxm->mom && OIC_MULTIPLE_OWNER_DISABLE != doxm->mom->mode)
2080     {
2081         CAResult_t caRes = CA_STATUS_FAILED;
2082
2083         OIC_LOG(INFO, TAG, "Multiple Ownership Transfer Enabled!");
2084
2085         if(OIC_PRECONFIG_PIN == doxm->oxmSel)
2086         {
2087             caRes = CAEnableAnonECDHCipherSuite(false);
2088             VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
2089             OIC_LOG(INFO, TAG, "ECDH_ANON CipherSuite is DISABLED");
2090
2091             caRes = CASelectCipherSuite((uint16_t)MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256, CA_ADAPTER_IP);
2092             VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
2093 #ifdef __WITH_TLS__
2094             caRes = CASelectCipherSuite((uint16_t)MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256, CA_ADAPTER_TCP);
2095             VERIFY_SUCCESS(TAG, caRes == CA_STATUS_OK, ERROR);
2096 #endif
2097             OIC_LOG(INFO, TAG, "ECDHE_PSK CipherSuite will be used for MOT");
2098
2099             //Set the device id to derive temporal PSK
2100             SetUuidForPinBasedOxm(&doxm->deviceID);
2101         }
2102         else
2103         {
2104             OIC_LOG(ERROR, TAG, "Unsupported OxM for Multiple Ownership Transfer.");
2105             return;
2106         }
2107
2108         CAregisterSslHandshakeCallback(MultipleOwnerDTLSHandshakeCB);
2109     }
2110
2111     OIC_LOG(INFO, TAG, "OUT PrepareMOT");
2112     return;
2113 exit:
2114     OIC_LOG(WARNING, TAG, "Error in PrepareMOT");
2115 }
2116 #endif //defined(__WITH_DTLS__) && defined(MULTIPLE_OWNER)
2117
2118 OCStackResult InitDoxmResource()
2119 {
2120     OCStackResult ret = OC_STACK_ERROR;
2121
2122     if (!g_mutexDoxm)
2123     {
2124         g_mutexDoxm = oc_mutex_new();
2125             if(!g_mutexDoxm)
2126             {
2127                 return OC_STACK_ERROR;
2128             }
2129     }
2130
2131     gConfirmState = CONFIRM_STATE_READY;
2132     gConfirmMsgId = 0;
2133
2134     //Read DOXM resource from PS
2135     uint8_t *data = NULL;
2136     size_t size = 0;
2137     ret = GetSecureVirtualDatabaseFromPS(OIC_JSON_DOXM_NAME, &data, &size);
2138     // If database read failed
2139     if (OC_STACK_OK != ret)
2140     {
2141        OIC_LOG (DEBUG, TAG, "ReadSVDataFromPS failed");
2142     }
2143     if (data)
2144     {
2145        // Read DOXM resource from PS
2146        ret = CBORPayloadToDoxm(data, size, &gDoxm);
2147     }
2148     /*
2149      * If SVR database in persistent storage got corrupted or
2150      * is not available for some reason, a default doxm is created
2151      * which allows user to initiate doxm provisioning again.
2152      */
2153      if ((OC_STACK_OK != ret) || !data || !gDoxm)
2154     {
2155         gDoxm = GetDoxmDefault();
2156     }
2157
2158      oc_mutex_lock(g_mutexDoxm);
2159      g_isDoxmNull = false;
2160      oc_mutex_unlock(g_mutexDoxm);
2161
2162     //In case of the server is shut down unintentionally, we should initialize the owner
2163     if(gDoxm && (false == gDoxm->owned))
2164     {
2165         OicUuid_t emptyUuid = {.id={0}};
2166         memcpy(&gDoxm->owner, &emptyUuid, sizeof(OicUuid_t));
2167 #if defined (__WITH_TLS__) || defined(__WITH_DTLS__)
2168         InvokeOtmEventHandler(NULL, 0, NULL, OIC_OTM_READY);
2169 #endif
2170     }
2171
2172     ret = CheckDeviceID();
2173     if (ret == OC_STACK_OK)
2174     {
2175         OIC_LOG_V(DEBUG, TAG, "Initial Doxm Owned = %d", gDoxm->owned);
2176         //Instantiate 'oic.sec.doxm'
2177         ret = CreateDoxmResource();
2178     }
2179     else
2180     {
2181         OIC_LOG (ERROR, TAG, "CheckDeviceID failed");
2182     }
2183     OICFree(data);
2184
2185 #if defined(__WITH_DTLS__) && defined(MULTIPLE_OWNER)
2186     //if MOT is enabled, MOT should be prepared.
2187     if(gDoxm && gDoxm->owned)
2188     {
2189         PrepareMOT(gDoxm);
2190     }
2191 #endif // defined(__WITH_DTLS__) && defined(MULTIPLE_OWNER)
2192
2193     return ret;
2194 }
2195
2196 OCStackResult DeInitDoxmResource()
2197 {
2198     oc_mutex_lock(g_mutexDoxm);
2199     OCStackResult ret = OCDeleteResource(gDoxmHandle);
2200     if (gDoxm  != &gDefaultDoxm)
2201     {
2202         DeleteDoxmBinData(gDoxm);
2203     }
2204     gDoxm = NULL;
2205     g_isDoxmNull = true;
2206
2207     if (OC_STACK_OK == ret)
2208     {
2209         oc_mutex_unlock(g_mutexDoxm);
2210         return OC_STACK_OK;
2211     }
2212     else
2213     {
2214         oc_mutex_unlock(g_mutexDoxm);
2215         return OC_STACK_ERROR;
2216     }
2217 }
2218
2219 OCStackResult GetDoxmDeviceID(OicUuid_t *deviceID)
2220 {
2221     if (deviceID && gDoxm)
2222     {
2223        *deviceID = gDoxm->deviceID;
2224         return OC_STACK_OK;
2225     }
2226     return OC_STACK_ERROR;
2227 }
2228
2229 OCStackResult GetDoxmIsOwned(bool *isOwned)
2230 {
2231     if (isOwned && gDoxm)
2232     {
2233        *isOwned = gDoxm->owned;
2234         return OC_STACK_OK;
2235     }
2236     return OC_STACK_ERROR;
2237 }
2238
2239 #if defined(__WITH_DTLS__) || defined (__WITH_TLS__)
2240 OCStackResult SetDoxmDeviceIDSeed(const uint8_t* seed, size_t seedSize)
2241 {
2242     OIC_LOG_V(INFO, TAG, "In %s", __func__);
2243
2244     if (NULL == seed)
2245     {
2246         return OC_STACK_INVALID_PARAM;
2247     }
2248     if (MAX_UUID_SEED_SIZE < seedSize)
2249     {
2250         OIC_LOG_V(ERROR, TAG, "Seed size is too long (MAX size is %d bytes)", MAX_UUID_SEED_SIZE);
2251         return OC_STACK_INVALID_PARAM;
2252     }
2253     if (MIN_UUID_SEED_SIZE > seedSize)
2254     {
2255         OIC_LOG_V(ERROR, TAG, "Seed size is too small (MIN size is %d bytes)", MIN_UUID_SEED_SIZE);
2256         return OC_STACK_INVALID_PARAM;
2257     }
2258
2259     memset(gUuidSeed, 0x00, sizeof(gUuidSeed));
2260     memcpy(gUuidSeed, seed, seedSize);
2261     gUuidSeedSize = seedSize;
2262
2263     OIC_LOG_V(INFO, TAG, "Out %s", __func__);
2264
2265     return OC_STACK_OK;
2266 }
2267
2268 #endif
2269
2270 OCStackResult SetDoxmDeviceID(const OicUuid_t *deviceID)
2271 {
2272     bool isOwnerUpdated = false;
2273     bool isRownerUpdated = false;
2274     if (NULL == deviceID)
2275     {
2276         return OC_STACK_INVALID_PARAM;
2277     }
2278     if (NULL == gDoxm)
2279     {
2280         OIC_LOG(ERROR, TAG, "Doxm resource is not initialized.");
2281         return OC_STACK_NO_RESOURCE;
2282     }
2283
2284 #ifdef __WITH_DTLS__
2285     //for normal device.
2286     if (true == gDoxm->owned
2287             && memcmp(gEmptyUuid, gDoxm->owner.id, sizeof(gDoxm->owner.id)) != 0
2288             && memcmp(gDoxm->deviceID.id, gDoxm->owner.id, sizeof(gDoxm->owner.id)) != 0)
2289     {
2290         OIC_LOG(ERROR, TAG, "This device owned by owner's device.");
2291         OIC_LOG(ERROR, TAG, "Device UUID cannot be changed to guarantee the reliability of the connection.");
2292         return OC_STACK_ERROR;
2293     }
2294 #endif //__WITH_DTLS
2295
2296     //Save the previous UUID
2297     OicUuid_t prevUuid;
2298     memcpy(prevUuid.id, gDoxm->deviceID.id, sizeof(prevUuid.id));
2299
2300     //Change the device UUID
2301     memcpy(gDoxm->deviceID.id, deviceID->id, sizeof(deviceID->id));
2302
2303     //Change the owner ID if necessary
2304     if (memcmp(gDoxm->owner.id, prevUuid.id, sizeof(prevUuid.id)) == 0)
2305     {
2306         memcpy(gDoxm->owner.id, deviceID->id, sizeof(deviceID->id));
2307         isOwnerUpdated = true;
2308     }
2309     //Change the resource owner ID if necessary
2310     if (memcmp(gDoxm->rownerID.id, prevUuid.id, sizeof(prevUuid.id)) == 0)
2311     {
2312         memcpy(gDoxm->rownerID.id, deviceID->id, sizeof(deviceID->id));
2313         isRownerUpdated = true;
2314     }
2315     // TODO: T.B.D Change resource owner for pstat, acl and cred
2316
2317     //Update PS
2318     if (!UpdatePersistentStorage(gDoxm))
2319     {
2320         //revert UUID in case of PSI error
2321         memcpy(gDoxm->deviceID.id, prevUuid.id, sizeof(prevUuid.id));
2322         if (isOwnerUpdated)
2323         {
2324             memcpy(gDoxm->owner.id, prevUuid.id, sizeof(prevUuid.id));
2325         }
2326         if (isRownerUpdated)
2327         {
2328             memcpy(gDoxm->rownerID.id, prevUuid.id, sizeof(prevUuid.id));
2329         }
2330         // TODO: T.B.D Revert resource owner for pstat, acl and cred
2331
2332         OIC_LOG(ERROR, TAG, "Failed to update persistent storage");
2333         return OC_STACK_ERROR;
2334     }
2335     return OC_STACK_OK;
2336 }
2337
2338 OCStackResult GetDoxmDevOwnerId(OicUuid_t *devownerid)
2339 {
2340     OCStackResult retVal = OC_STACK_ERROR;
2341     if (gDoxm)
2342     {
2343         OIC_LOG_V(DEBUG, TAG, "GetDoxmDevOwnerId(): gDoxm owned =  %d.", \
2344             gDoxm->owned);
2345         if (gDoxm->owned)
2346         {
2347             *devownerid = gDoxm->owner;
2348             retVal = OC_STACK_OK;
2349         }
2350     }
2351     return retVal;
2352 }
2353
2354 OCStackResult GetDoxmRownerId(OicUuid_t *rowneruuid)
2355 {
2356     OCStackResult retVal = OC_STACK_ERROR;
2357     if (gDoxm)
2358     {
2359         if( gDoxm->owned )
2360         {
2361             *rowneruuid = gDoxm->rownerID;
2362                     retVal = OC_STACK_OK;
2363         }
2364     }
2365     return retVal;
2366 }
2367
2368 #ifdef MULTIPLE_OWNER
2369 /**
2370  * Compare the UUID to SubOwner.
2371  *
2372  * @param[in] uuid device UUID
2373  *
2374  * @return true if context->subjectId exist subowner list, else false.
2375  */
2376 bool IsSubOwner(const OicUuid_t* uuid)
2377 {
2378     bool retVal = false;
2379
2380     if (NULL == uuid)
2381     {
2382         return retVal;
2383     }
2384
2385     if (gDoxm && gDoxm->subOwners)
2386     {
2387         if (memcmp(gDoxm->owner.id, uuid->id, sizeof(gDoxm->owner.id)) == 0)
2388         {
2389             return false;
2390         }
2391
2392         OicSecSubOwner_t* subOwner = NULL;
2393         LL_FOREACH(gDoxm->subOwners, subOwner)
2394         {
2395             if (memcmp(subOwner->uuid.id, uuid->id, sizeof(uuid->id)) == 0)
2396             {
2397                 return true;
2398             }
2399         }
2400     }
2401     return retVal;
2402 }
2403 #endif //MULTIPLE_OWNER
2404
2405 OCStackResult SetMOTStatus(bool enable)
2406 {
2407     OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
2408 #ifdef MULTIPLE_OWNER
2409     OCStackResult ret = OC_STACK_NO_MEMORY;
2410     uint8_t *cborPayload = NULL;
2411     size_t size = 0;
2412     bool isDeallocateRequired = false;
2413
2414     VERIFY_NON_NULL(TAG, gDoxm, ERROR);
2415
2416     if (NULL == gDoxm->mom && !enable)
2417     {
2418         OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
2419         return OC_STACK_OK;
2420     }
2421
2422     if (NULL == gDoxm->mom)
2423     {
2424         gDoxm->mom = (OicSecMom_t*)OICCalloc(1, sizeof(OicSecMom_t));
2425         VERIFY_NON_NULL(TAG, gDoxm->mom, ERROR);
2426         isDeallocateRequired = true;
2427     }
2428
2429     gDoxm->mom->mode = (enable ? OIC_MULTIPLE_OWNER_ENABLE : OIC_MULTIPLE_OWNER_DISABLE);
2430     gDoxm->oxmSel = OIC_PRECONFIG_PIN;
2431
2432     ret = DoxmToCBORPayload(gDoxm, &cborPayload, &size, false);
2433     VERIFY_SUCCESS(TAG, OC_STACK_OK == ret, ERROR);
2434
2435     ret = UpdateSecureResourceInPS(OIC_JSON_DOXM_NAME, cborPayload, size);
2436     VERIFY_SUCCESS(TAG, OC_STACK_OK == ret, ERROR);
2437
2438     isDeallocateRequired = false;
2439
2440 exit:
2441     if (isDeallocateRequired)
2442     {
2443         OICFree(gDoxm->mom);
2444     }
2445     if (cborPayload)
2446     {
2447         OICFree(cborPayload);
2448     }
2449     OIC_LOG_V(DEBUG, TAG, "Out %s : %d", __func__, ret);
2450     return ret;
2451 #else
2452     OC_UNUSED(enable);
2453     OIC_LOG(DEBUG, TAG, "Multiple Owner is not enabled.");
2454     OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
2455     return OC_STACK_ERROR;
2456 #endif //MULTIPLE_OWNER
2457 }
2458
2459 OCStackResult RemoveSubOwner(const OicUuid_t* subOwner)
2460 {
2461     OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
2462 #ifdef MULTIPLE_OWNER
2463     OCStackResult ret = OC_STACK_ERROR;
2464     bool isDeleted = false;
2465
2466     if (NULL == subOwner)
2467     {
2468         OIC_LOG(ERROR, TAG, "Invalid sub owner UUID.");
2469         return OC_STACK_INVALID_PARAM;
2470     }
2471     if (NULL == gDoxm)
2472     {
2473         OIC_LOG(ERROR, TAG, "Doxm resource is NULL");
2474         return OC_STACK_NO_RESOURCE;
2475     }
2476     if ( NULL == gDoxm->subOwners)
2477     {
2478         OIC_LOG(WARNING, TAG, "Sub Owner list is empty.");
2479         return OC_STACK_ERROR;
2480     }
2481
2482     OicSecSubOwner_t* curSubOwner = NULL;
2483     OicSecSubOwner_t* tempSubOwner = NULL;
2484     LL_FOREACH_SAFE(gDoxm->subOwners, curSubOwner, tempSubOwner)
2485     {
2486         if (memcmp(curSubOwner->uuid.id, subOwner->id, sizeof(subOwner->id)) == 0 ||
2487             memcmp(WILDCARD_SUBJECT_ID.id, subOwner->id, sizeof(OicUuid_t)) == 0)
2488         {
2489             char* strUuid = NULL;
2490             ret = ConvertUuidToStr(&curSubOwner->uuid, &strUuid);
2491             if (OC_STACK_OK != ret)
2492             {
2493                 OIC_LOG_V(ERROR, TAG, "ConvertUuidToStr error : %d", ret);
2494                 break;
2495             }
2496
2497             OIC_LOG_V(INFO, TAG, "[%s] will be removed from sub owner list.", strUuid);
2498             LL_DELETE(gDoxm->subOwners, curSubOwner);
2499
2500             //Remove the cred for sub owner
2501             ret = RemoveCredential(&curSubOwner->uuid);
2502             if (OC_STACK_RESOURCE_DELETED != ret)
2503             {
2504                 OIC_LOG_V(WARNING, TAG, "RemoveCredential error for [%s] : %d", strUuid, ret);
2505                 break;
2506             }
2507
2508             // TODO: Remove the ACL for sub owner (Currently ACL is not required for sub-owner)
2509
2510             OICFree(strUuid);
2511
2512             isDeleted = true;
2513         }
2514     }
2515
2516     if (isDeleted)
2517     {
2518         //Update persistent storage
2519         if (UpdatePersistentStorage(gDoxm))
2520         {
2521             ret = OC_STACK_RESOURCE_DELETED;
2522         }
2523         else
2524         {
2525             OIC_LOG(ERROR, TAG, "UpdatePersistentStorage error");
2526             ret = OC_STACK_ERROR;
2527         }
2528     }
2529
2530     OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
2531     return ret;
2532 #else
2533     OC_UNUSED(subOwner);
2534     OIC_LOG(DEBUG, TAG, "Multiple Owner is not enabled.");
2535     OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
2536     return OC_STACK_ERROR;
2537 #endif //MULTIPLE_OWNER
2538
2539 }
2540
2541 OCStackResult SetNumberOfSubOwner(size_t numOfSubOwner)
2542 {
2543     OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
2544 #ifdef MULTIPLE_OWNER
2545     if (MAX_SUBOWNER_SIZE < numOfSubOwner || MIN_SUBOWNER_SIZE > numOfSubOwner)
2546     {
2547         OIC_LOG_V(ERROR, TAG, "Invalid number of sub owner : %zd", numOfSubOwner);
2548         return OC_STACK_INVALID_PARAM;
2549     }
2550     gMaxSubOwnerSize = numOfSubOwner;
2551     OIC_LOG_V(DEBUG, TAG, "Number of SubOwner = %zd", gMaxSubOwnerSize);
2552     OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
2553     return OC_STACK_OK;
2554 #else
2555     OC_UNUSED(numOfSubOwner);
2556     OIC_LOG(DEBUG, TAG, "Multiple Owner is not enabled.");
2557     OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
2558     return OC_STACK_ERROR;
2559 #endif //MULTIPLE_OWNER
2560 }
2561
2562 /**
2563  * Function to restore doxm resurce to initial status.
2564  * This function will use in case of error while ownership transfer
2565  */
2566 void RestoreDoxmToInitState()
2567 {
2568
2569     gConfirmState = CONFIRM_STATE_READY;
2570     gConfirmMsgId = 0;
2571
2572     if(gDoxm)
2573     {
2574         OIC_LOG(INFO, TAG, "DOXM resource will revert back to initial status.");
2575
2576         OicUuid_t emptyUuid = {.id={0}};
2577         memcpy(&(gDoxm->owner), &emptyUuid, sizeof(OicUuid_t));
2578         gDoxm->owned = false;
2579         gDoxm->oxmSel = OIC_JUST_WORKS;
2580
2581         if(!UpdatePersistentStorage(gDoxm))
2582         {
2583             OIC_LOG(ERROR, TAG, "Failed to revert DOXM in persistent storage");
2584         }
2585     }
2586 }
2587
2588 OCStackResult SetDoxmSelfOwnership(const OicUuid_t* newROwner)
2589 {
2590     OCStackResult ret = OC_STACK_ERROR;
2591     uint8_t *cborPayload = NULL;
2592     size_t size = 0;
2593
2594     if(NULL == gDoxm)
2595     {
2596         ret = OC_STACK_NO_RESOURCE;
2597         return ret;
2598     }
2599
2600     if( newROwner && (false == gDoxm->owned) )
2601     {
2602         gDoxm->owned = true;
2603         memcpy(gDoxm->owner.id, newROwner->id, sizeof(newROwner->id));
2604         memcpy(gDoxm->rownerID.id, newROwner->id, sizeof(newROwner->id));
2605
2606         ret = DoxmToCBORPayload(gDoxm, &cborPayload, &size, false);
2607         VERIFY_SUCCESS(TAG, OC_STACK_OK == ret, ERROR);
2608
2609         ret = UpdateSecureResourceInPS(OIC_JSON_DOXM_NAME, cborPayload, size);
2610         VERIFY_SUCCESS(TAG, OC_STACK_OK == ret, ERROR);
2611
2612         OICFree(cborPayload);
2613     }
2614
2615     return ret;
2616
2617 exit:
2618     OICFree(cborPayload);
2619     return ret;
2620 }
2621