resource/csdk/security/provisioning/src/pmutility.c

   1 /* *****************************************************************
   2  *
   3  * Copyright 2015 Samsung Electronics All Rights Reserved.
   4  *
   5  *
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *     http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  * *****************************************************************/
  20 #ifndef _POSIX_C_SOURCE
  21 #define _POSIX_C_SOURCE 200112L
  22 #endif
  23
  24 #include "iotivity_config.h"
  25 #ifdef HAVE_UNISTD_H
  26 #include <unistd.h>
  27 #endif
  28 #ifdef HAVE_STRING_H
  29 #include <string.h>
  30 #endif
  31
  32 #include "ocstack.h"
  33 #include "oic_malloc.h"
  34 #include "oic_string.h"
  35 #include "oic_time.h"
  36 #include "logger.h"
  37 #include "cJSON.h"
  38 #include "utlist.h"
  39 #include "ocpayload.h"
  40
  41 #include "securevirtualresourcetypes.h"
  42 #include "srmresourcestrings.h" //@note: SRM's internal header
  43 #include "doxmresource.h"       //@note: SRM's internal header
  44 #include "pstatresource.h"      //@note: SRM's internal header
  45 #include "verresource.h"      //@note: SRM's internal header
  46
  47 #include "pmtypes.h"
  48 #include "pmutility.h"
  49
  50 #include "srmutility.h"
  51
  52 #define TAG ("OIC_PM_UTILITY")
  53
  54 typedef struct _DiscoveryInfo{
  55     OCProvisionDev_t    **ppDevicesList;
  56     OCProvisionDev_t    *pCandidateList;
  57     bool                isOwnedDiscovery;
  58     bool                isSingleDiscovery;
  59     bool                isFound;
  60     const OicUuid_t     *targetId;
  61 } DiscoveryInfo;
  62
  63 /*
  64  * Function to discover secre port information through unicast
  65  *
  66  * @param[in] discoveryInfo The pointer of discovery information to matain result of discovery
  67  * @param[in] clientResponse  Response information(It will contain payload)
  68  *
  69  * @return OC_STACK_OK on success otherwise error.
  70  */
  71 static OCStackResult SecurePortDiscovery(DiscoveryInfo* discoveryInfo,
  72                                          const OCClientResponse *clientResponse);
  73
  74 /*
  75  * Function to discover security version information through unicast
  76  *
  77  * @param[in] discoveryInfo The pointer of discovery information to matain result of discovery
  78  * @param[in] clientResponse  Response information(It will contain payload)
  79  *
  80  * @return OC_STACK_OK on success otherwise error.
  81  */
  82 static OCStackResult SecurityVersionDiscovery(DiscoveryInfo* discoveryInfo,
  83                                               const OCClientResponse *clientResponse);
  84
  85 /**
  86  * Callback handler for PMDeviceDiscovery API.
  87  *
  88  * @param[in] ctx             User context
  89  * @param[in] handle          Handler for response
  90  * @param[in] clientResponse  Response information (It will contain payload)
  91  * @return OC_STACK_KEEP_TRANSACTION to keep transaction and
  92  *         OC_STACK_DELETE_TRANSACTION to delete it.
  93  */
  94 static OCStackApplicationResult DeviceDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
  95                                 OCClientResponse *clientResponse);
  96
  97 /**
  98  * Callback handler for getting secure port information using /oic/res discovery.
  99  *
 100  * @param[in] ctx             user context
 101  * @param[in] handle          Handle for response
 102  * @param[in] clientResponse  Response information(It will contain payload)
 103  *
 104  * @return OC_STACK_KEEP_TRANSACTION to keep transaction and
 105  *         OC_STACK_DELETE_TRANSACTION to delete it.
 106  */
 107 static OCStackApplicationResult SecurePortDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 108                                  OCClientResponse *clientResponse);
 109
 110 /**
 111  * Callback handler for security version discovery.
 112  *
 113  * @param[in] ctx             User context
 114  * @param[in] handle          Handler for response
 115  * @param[in] clientResponse  Response information (It will contain payload)
 116  * @return OC_STACK_KEEP_TRANSACTION to keep transaction and
 117  *         OC_STACK_DELETE_TRANSACTION to delete it.
 118  */
 119 static OCStackApplicationResult SecVersionDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 120                                 OCClientResponse *clientResponse);
 121
 122 /**
 123  * Function to search node in linked list that matches given IP and port.
 124  *
 125  * @param[in] pList         List of OCProvisionDev_t.
 126  * @param[in] addr          address of target device.
 127  * @param[in] port          port of remote server.
 128  *
 129  * @return pointer of OCProvisionDev_t if exist, otherwise NULL
 130  */
 131 OCProvisionDev_t* GetDevice(OCProvisionDev_t **ppDevicesList, const char* addr, const uint16_t port)
 132 {
 133     if(NULL == addr || NULL == *ppDevicesList)
 134     {
 135         OIC_LOG_V(ERROR, TAG, "Invalid Input parameters in [%s]\n", __FUNCTION__);
 136         return NULL;
 137     }
 138
 139     OCProvisionDev_t *ptr = NULL;
 140     LL_FOREACH(*ppDevicesList, ptr)
 141     {
 142         if( strcmp(ptr->endpoint.addr, addr) == 0 && port == ptr->endpoint.port)
 143         {
 144             return ptr;
 145         }
 146     }
 147
 148     return NULL;
 149 }
 150
 151
 152 /**
 153  * Add device information to list.
 154  *
 155  * @param[in] pList         List of OCProvisionDev_t.
 156  * @param[in] endpoint      target device endpoint.
 157  * @param[in] connType      connectivity type of endpoint
 158  * @param[in] doxm          pointer to doxm instance.
 159  *
 160  * @return OC_STACK_OK for success and error code otherwise.
 161  */
 162 OCStackResult AddDevice(OCProvisionDev_t **ppDevicesList, OCDevAddr* endpoint,
 163                         OCConnectivityType connType, OicSecDoxm_t *doxm)
 164 {
 165     if (NULL == endpoint)
 166     {
 167         return OC_STACK_INVALID_PARAM;
 168     }
 169
 170     OCProvisionDev_t *ptr = GetDevice(ppDevicesList, endpoint->addr, endpoint->port);
 171     if(!ptr)
 172     {
 173         ptr = (OCProvisionDev_t *)OICCalloc(1, sizeof (OCProvisionDev_t));
 174         if (NULL == ptr)
 175         {
 176             OIC_LOG(ERROR, TAG, "Error while allocating memory for linkedlist node !!");
 177             return OC_STACK_NO_MEMORY;
 178         }
 179
 180         ptr->endpoint = *endpoint;
 181         ptr->doxm = doxm;
 182         ptr->securePort = DEFAULT_SECURE_PORT;
 183         ptr->next = NULL;
 184         ptr->connType = connType;
 185         ptr->devStatus = DEV_STATUS_ON; //AddDevice is called when discovery(=alive)
 186         OICStrcpy(ptr->secVer, MAX_VERSION_LEN, DEFAULT_SEC_VERSION); // version initialization
 187         ptr->handle = NULL;
 188
 189         LL_PREPEND(*ppDevicesList, ptr);
 190     }
 191
 192     return OC_STACK_OK;
 193 }
 194
 195 /**
 196  * Move device object between two device lists.
 197  *
 198  * @param[in] ppDstDevicesList         Destination list of OCProvisionDev_t.
 199  * @param[in] ppSrcDevicesList         Source list of OCProvisionDev_t.
 200  * @param[in] endpoint      target device endpoint.
 201  *
 202  * @return OC_STACK_OK for success and error code otherwise.
 203  */
 204 OCStackResult MoveDeviceList(OCProvisionDev_t **ppDstDevicesList,
 205                         OCProvisionDev_t **ppSrcDevicesList, OCDevAddr* endpoint)
 206 {
 207     if (NULL == ppSrcDevicesList || NULL == endpoint)
 208     {
 209         return OC_STACK_INVALID_PARAM;
 210     }
 211
 212     OCProvisionDev_t *ptr = GetDevice(ppSrcDevicesList, endpoint->addr, endpoint->port);
 213     if(ptr)
 214     {
 215         LL_DELETE(*ppSrcDevicesList, ptr);
 216         LL_PREPEND(*ppDstDevicesList, ptr);
 217         OIC_LOG_V(DEBUG, TAG, "MoveDeviceList success : %s(%d)", endpoint->addr, endpoint->port);
 218         return OC_STACK_OK;
 219     }
 220
 221     return OC_STACK_ERROR;
 222 }
 223
 224 /**
 225  * Function to set secure port information from the given list of devices.
 226  *
 227  * @param[in] pList         List of OCProvisionDev_t.
 228  * @param[in] addr          address of target device.
 229  * @param[in] port          port of remote server.
 230  * @param[in] secureport    secure port information.
 231  *
 232  * @return OC_STACK_OK for success and errorcode otherwise.
 233  */
 234 static OCStackResult UpdateSecurePortOfDevice(OCProvisionDev_t **ppDevicesList, const char *addr,
 235                                        uint16_t port, uint16_t securePort
 236 #ifdef __WITH_TLS__
 237                                        ,uint16_t tcpPort
 238 #endif
 239                                        )
 240 {
 241     OCProvisionDev_t *ptr = GetDevice(ppDevicesList, addr, port);
 242
 243     if(!ptr)
 244     {
 245         OIC_LOG(ERROR, TAG, "Can not find device information in the discovery device list");
 246         return OC_STACK_ERROR;
 247     }
 248
 249     ptr->securePort = securePort;
 250
 251 #ifdef __WITH_TLS__
 252     ptr->tcpPort = tcpPort;
 253 #endif
 254
 255     return OC_STACK_OK;
 256 }
 257
 258 /**
 259  * Function to set security version information from the given list of devices.
 260  *
 261  * @param[in] pList         List of OCProvisionDev_t.
 262  * @param[in] addr          address of target device.
 263  * @param[in] port          port of remote server.
 264  * @param[in] secVer    security version information.
 265  *
 266  * @return OC_STACK_OK for success and errorcode otherwise.
 267  */
 268 OCStackResult UpdateSecVersionOfDevice(OCProvisionDev_t **ppDevicesList, const char *addr,
 269                                        uint16_t port, const char* secVer)
 270 {
 271     if (NULL == secVer)
 272     {
 273         return OC_STACK_INVALID_PARAM;
 274     }
 275
 276     OCProvisionDev_t *ptr = GetDevice(ppDevicesList, addr, port);
 277
 278     if(!ptr)
 279     {
 280         OIC_LOG(ERROR, TAG, "Can not find device information in the discovery device list");
 281         return OC_STACK_ERROR;
 282     }
 283
 284     OICStrcpy(ptr->secVer, MAX_VERSION_LEN, secVer);
 285
 286     return OC_STACK_OK;
 287 }
 288
 289 /**
 290  * This function deletes list of provision target devices
 291  *
 292  * @param[in] pDevicesList         List of OCProvisionDev_t.
 293  */
 294 void PMDeleteDeviceList(OCProvisionDev_t *pDevicesList)
 295 {
 296     if(pDevicesList)
 297     {
 298         OCProvisionDev_t *del = NULL, *tmp = NULL;
 299         LL_FOREACH_SAFE(pDevicesList, del, tmp)
 300         {
 301             LL_DELETE(pDevicesList, del);
 302
 303             DeleteDoxmBinData(del->doxm);
 304             DeletePstatBinData(del->pstat);
 305             OICFree(del);
 306         }
 307     }
 308 }
 309
 310 OCProvisionDev_t* PMCloneOCProvisionDev(const OCProvisionDev_t* src)
 311 {
 312     OIC_LOG(DEBUG, TAG, "IN PMCloneOCProvisionDev");
 313
 314     if (!src)
 315     {
 316         OIC_LOG(ERROR, TAG, "PMCloneOCProvisionDev : Invalid parameter");
 317         return NULL;
 318     }
 319
 320     // TODO: Consider use VERIFY_NON_NULL instead of if ( null check ) { goto exit; }
 321     OCProvisionDev_t* newDev = (OCProvisionDev_t*)OICCalloc(1, sizeof(OCProvisionDev_t));
 322     VERIFY_NON_NULL(TAG, newDev, ERROR);
 323
 324     memcpy(&newDev->endpoint, &src->endpoint, sizeof(OCDevAddr));
 325
 326     if (src->pstat)
 327     {
 328         newDev->pstat= (OicSecPstat_t*)OICCalloc(1, sizeof(OicSecPstat_t));
 329         VERIFY_NON_NULL(TAG, newDev->pstat, ERROR);
 330
 331         memcpy(newDev->pstat, src->pstat, sizeof(OicSecPstat_t));
 332         // We have to assign NULL for not necessary information to prevent memory corruption.
 333         newDev->pstat->sm = NULL;
 334     }
 335
 336     if (src->doxm)
 337     {
 338         newDev->doxm = (OicSecDoxm_t*)OICCalloc(1, sizeof(OicSecDoxm_t));
 339         VERIFY_NON_NULL(TAG, newDev->doxm, ERROR);
 340
 341         memcpy(newDev->doxm, src->doxm, sizeof(OicSecDoxm_t));
 342         // We have to assign NULL for not necessary information to prevent memory corruption.
 343         newDev->doxm->oxmType = NULL;
 344         newDev->doxm->oxm = NULL;
 345     }
 346
 347     if (0 == strlen(src->secVer))
 348     {
 349         OICStrcpy(newDev->secVer, MAX_VERSION_LEN, DEFAULT_SEC_VERSION);
 350     }
 351     else
 352     {
 353         OICStrcpy(newDev->secVer, MAX_VERSION_LEN, src->secVer);
 354     }
 355
 356     newDev->securePort = src->securePort;
 357     newDev->devStatus = src->devStatus;
 358     newDev->connType = src->connType;
 359     newDev->next = NULL;
 360
 361     OIC_LOG(DEBUG, TAG, "OUT PMCloneOCProvisionDev");
 362
 363     return newDev;
 364
 365 exit:
 366     OIC_LOG(ERROR, TAG, "PMCloneOCProvisionDev : Failed to allocate memory");
 367     if (newDev)
 368     {
 369         OICFree(newDev->pstat);
 370         OICFree(newDev->doxm);
 371         OICFree(newDev);
 372     }
 373     return NULL;
 374 }
 375
 376 /**
 377  * Timeout implementation for secure discovery. When performing secure discovery,
 378  * we should wait a certain period of time for getting response of each devices.
 379  *
 380  * @param[in]  waittime  Timeout in seconds.
 381  * @param[in]  waitForStackResponse if true timeout function will call OCProcess while waiting.
 382  * @return OC_STACK_OK on success otherwise error.
 383  */
 384 OCStackResult PMTimeout(unsigned short waittime, bool waitForStackResponse)
 385 {
 386     OCStackResult res = OC_STACK_OK;
 387
 388     uint64_t startTime = OICGetCurrentTime(TIME_IN_MS);
 389     while (OC_STACK_OK == res)
 390     {
 391         uint64_t currTime = OICGetCurrentTime(TIME_IN_MS);
 392
 393         long elapsed = (long)((currTime - startTime) / MS_PER_SEC);
 394         if (elapsed > waittime)
 395         {
 396             return OC_STACK_OK;
 397         }
 398         if (waitForStackResponse)
 399         {
 400             res = OCProcess();
 401         }
 402     }
 403     return res;
 404 }
 405
 406 /**
 407  * Extract secure port information from payload of discovery response.
 408  *
 409  * @param[in] jsonStr response payload of /oic/res discovery.
 410  *
 411  * @return Secure port
 412  */
 413 uint16_t GetSecurePortFromJSON(char* jsonStr)
 414 {
 415     // TODO: Modify error handling
 416     if (NULL == jsonStr)
 417     {
 418         return 0;
 419     }
 420     cJSON *jsonProp = NULL;
 421     cJSON *jsonP = NULL;
 422     cJSON *jsonPort = NULL;
 423
 424     cJSON *jsonRoot = cJSON_Parse(jsonStr);
 425     if(!jsonRoot)
 426     {
 427         // TODO: Add error log & return default secure port
 428         return 0;
 429     }
 430
 431     jsonProp = cJSON_GetObjectItem(jsonRoot, "prop");
 432     if(!jsonProp)
 433     {
 434         // TODO: Add error log & return default secure port
 435         return 0;
 436     }
 437
 438     jsonP = cJSON_GetObjectItem(jsonProp, "p");
 439     if(!jsonP)
 440     {
 441         // TODO: Add error log & return default secure port
 442         return 0;
 443     }
 444
 445     jsonPort = cJSON_GetObjectItem(jsonP, "port");
 446     if(!jsonPort)
 447     {
 448         // TODO: Add error log & return default secure port
 449         return 0;
 450     }
 451
 452     return (uint16_t)jsonPort->valueint;
 453 }
 454
 455 bool PMGenerateQuery(bool isSecure,
 456                      const char* address, uint16_t port,
 457                      OCConnectivityType connType,
 458                      char* buffer, size_t bufferSize, const char* uri)
 459 {
 460     if(!address || !buffer || !uri)
 461     {
 462         OIC_LOG(ERROR, TAG, "PMGenerateQuery : Invalid parameters.");
 463         return false;
 464     }
 465
 466     int snRet = 0;
 467     char* prefix = (isSecure == true) ? COAPS_PREFIX : COAP_PREFIX;
 468
 469     switch(connType & CT_MASK_ADAPTER)
 470     {
 471         case CT_ADAPTER_TCP:
 472             prefix = (isSecure == true) ? COAPS_TCP_PREFIX : COAP_TCP_PREFIX;
 473         case CT_ADAPTER_IP:
 474             switch(connType & CT_MASK_FLAGS & ~CT_FLAG_SECURE)
 475             {
 476                 case CT_IP_USE_V4:
 477                     snRet = snprintf(buffer, bufferSize, "%s%s:%d%s",
 478                                      prefix, address, port, uri);
 479                     break;
 480                 case CT_IP_USE_V6:
 481                 {
 482                     char addressEncoded[128] = {0};
 483
 484                     OCStackResult result = OCEncodeAddressForRFC6874(addressEncoded,
 485                                                                      sizeof(addressEncoded),
 486                                                                      address);
 487                     if (OC_STACK_OK != result)
 488                     {
 489                         OIC_LOG_V(ERROR, TAG, "PMGenerateQuery : encoding error %d\n", result);
 490                         return false;
 491                     }
 492
 493                     snRet = snprintf(buffer, bufferSize, "%s[%s]:%d%s",
 494                                      prefix, addressEncoded, port, uri);
 495                     break;
 496                 }
 497                 default:
 498                     OIC_LOG(ERROR, TAG, "Unknown address format.");
 499                     return false;
 500             }
 501             // snprintf return value check
 502             if (snRet < 0)
 503             {
 504                 OIC_LOG_V(ERROR, TAG, "PMGenerateQuery : Error (snprintf) %d\n", snRet);
 505                 return false;
 506             }
 507             else if ((size_t)snRet >= bufferSize)
 508             {
 509                 OIC_LOG_V(ERROR, TAG, "PMGenerateQuery : Truncated (snprintf) %d\n", snRet);
 510                 return false;
 511             }
 512
 513             break;
 514         // TODO: We need to verify tinyDTLS in below cases
 515         case CT_ADAPTER_GATT_BTLE:
 516         case CT_ADAPTER_RFCOMM_BTEDR:
 517             OIC_LOG(ERROR, TAG, "Not supported connectivity adapter.");
 518             return false;
 519             break;
 520         default:
 521             OIC_LOG(ERROR, TAG, "Unknown connectivity adapter.");
 522             return false;
 523     }
 524
 525     return true;
 526 }
 527
 528 static OCStackApplicationResult SecurityVersionDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 529                                 OCClientResponse *clientResponse)
 530 {
 531     if (ctx == NULL)
 532     {
 533         OIC_LOG(ERROR, TAG, "Lost List of device information");
 534         return OC_STACK_KEEP_TRANSACTION;
 535     }
 536     (void)UNUSED;
 537     if (clientResponse)
 538     {
 539         if  (NULL == clientResponse->payload)
 540         {
 541             OIC_LOG(INFO, TAG, "Skiping Null payload");
 542             return OC_STACK_KEEP_TRANSACTION;
 543         }
 544         if (OC_STACK_OK != clientResponse->result)
 545         {
 546             OIC_LOG(INFO, TAG, "Error in response");
 547             return OC_STACK_KEEP_TRANSACTION;
 548         }
 549         else
 550         {
 551             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
 552             {
 553                 OIC_LOG(INFO, TAG, "Unknown payload type");
 554                 return OC_STACK_KEEP_TRANSACTION;
 555             }
 556
 557             OicSecVer_t *ptrVer = NULL;
 558             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
 559             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
 560
 561             OCStackResult res = CBORPayloadToVer(payload, size, &ptrVer);
 562             if ((NULL == ptrVer) && (OC_STACK_OK != res))
 563             {
 564                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
 565                 return OC_STACK_KEEP_TRANSACTION;
 566             }
 567             else
 568             {
 569                 OIC_LOG(DEBUG, TAG, "Successfully converted ver cbor to bin.");
 570
 571                 //If this is owend device discovery we have to filter out the responses.
 572                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 573                 res = UpdateSecVersionOfDevice(pDInfo->ppDevicesList, clientResponse->devAddr.addr,
 574                                                          clientResponse->devAddr.port, ptrVer->secv);
 575                 if (OC_STACK_OK != res)
 576                 {
 577                     OIC_LOG(ERROR, TAG, "Error while getting security version.");
 578                     DeleteVerBinData(ptrVer);
 579                     return OC_STACK_KEEP_TRANSACTION;
 580                 }
 581
 582                 OIC_LOG(INFO, TAG, "= Discovered security version =");
 583                 OIC_LOG_V(DEBUG, TAG, "IP %s", clientResponse->devAddr.addr);
 584                 OIC_LOG_V(DEBUG, TAG, "PORT %d", clientResponse->devAddr.port);
 585                 OIC_LOG_V(DEBUG, TAG, "VERSION %s", ptrVer->secv);
 586
 587                 OIC_LOG(INFO, TAG, "Exiting SecVersionDiscoveryHandler.");
 588                 DeleteVerBinData(ptrVer);
 589             }
 590         }
 591     }
 592     else
 593     {
 594         OIC_LOG(INFO, TAG, "Skiping Null response");
 595         return OC_STACK_KEEP_TRANSACTION;
 596     }
 597
 598     return  OC_STACK_DELETE_TRANSACTION;
 599 }
 600
 601 static OCStackApplicationResult SecurePortDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 602                                  OCClientResponse *clientResponse)
 603 {
 604     if (ctx == NULL)
 605     {
 606         OIC_LOG(ERROR, TAG, "Lost List of device information");
 607         return OC_STACK_DELETE_TRANSACTION;
 608     }
 609     (void)UNUSED;
 610     if (clientResponse)
 611     {
 612         if  (NULL == clientResponse->payload)
 613         {
 614             OIC_LOG(INFO, TAG, "Skiping Null payload");
 615         }
 616         else
 617         {
 618             if (PAYLOAD_TYPE_DISCOVERY != clientResponse->payload->type)
 619             {
 620                 OIC_LOG(INFO, TAG, "Wrong payload type");
 621                 return OC_STACK_DELETE_TRANSACTION;
 622             }
 623
 624             uint16_t securePort = 0;
 625             OCResourcePayload* resPayload = ((OCDiscoveryPayload*)clientResponse->payload)->resources;
 626
 627             // Use seure port of doxm for OTM and Provision.
 628             while (resPayload)
 629             {
 630                 if (0 == strncmp(resPayload->uri, OIC_RSRC_DOXM_URI, strlen(OIC_RSRC_DOXM_URI)))
 631                 {
 632                     OIC_LOG_V(INFO,TAG,"resPaylod->uri:%s",resPayload->uri);
 633                     OIC_LOG(INFO, TAG, "Found doxm resource.");
 634                     break;
 635                 }
 636                 else
 637                 {
 638                     resPayload = resPayload->next;
 639                 }
 640             }
 641             if (NULL == resPayload)
 642             {
 643                 OIC_LOG(ERROR, TAG, "Can not find doxm resource.");
 644                 return OC_STACK_DELETE_TRANSACTION;
 645             }
 646             if (resPayload && resPayload->secure)
 647             {
 648                 securePort = resPayload->port;
 649             }
 650             else
 651             {
 652                 OIC_LOG(INFO, TAG, "Can not find secure port information.");
 653                 return OC_STACK_DELETE_TRANSACTION;
 654             }
 655 #ifdef __WITH_TLS__
 656             OIC_LOG_V(DEBUG, TAG, "%s: TCP port from discovery = %d", __func__, resPayload->tcpPort);
 657 #endif
 658             DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 659             OCProvisionDev_t *ptr = GetDevice(&pDInfo->pCandidateList,
 660                                                          clientResponse->devAddr.addr,
 661                                                          clientResponse->devAddr.port);
 662             if(!ptr)
 663             {
 664                 OIC_LOG(ERROR, TAG, "Can not find device information in the discovery candidate device list");
 665                 return OC_STACK_DELETE_TRANSACTION;
 666             }
 667
 668             OCStackResult res = UpdateSecurePortOfDevice(&pDInfo->pCandidateList,
 669                                                          clientResponse->devAddr.addr,
 670                                                          clientResponse->devAddr.port,
 671                                                          securePort
 672 #ifdef __WITH_TLS__
 673                                                          ,resPayload->tcpPort
 674 #endif
 675                                                          );
 676             if (OC_STACK_OK != res)
 677             {
 678                 OIC_LOG(ERROR, TAG, "Error while getting secure port.");
 679                 return OC_STACK_DELETE_TRANSACTION;
 680             }
 681
 682             res = MoveDeviceList(pDInfo->ppDevicesList, &pDInfo->pCandidateList, &clientResponse->devAddr);
 683             if(OC_STACK_OK != res)
 684             {
 685                 OIC_LOG(ERROR, TAG, "Error while move the discovered device to list.");
 686                 return OC_STACK_DELETE_TRANSACTION;
 687             }
 688
 689             if(pDInfo->isSingleDiscovery)
 690             {
 691                 pDInfo->isFound = true;
 692             }
 693
 694 /*
 695  * Since security version discovery does not used anymore, disable security version discovery.
 696  * Need to discussion to removing all version discovery related codes.
 697  */
 698 #if 0
 699             res = SecurityVersionDiscovery(pDInfo, clientResponse);
 700             if(OC_STACK_OK != res)
 701             {
 702                 OIC_LOG(ERROR, TAG, "Failed to SecurityVersionDiscovery");
 703                 return OC_STACK_DELETE_TRANSACTION;
 704             }
 705 #endif
 706
 707             OIC_LOG(INFO, TAG, "Exiting SecurePortDiscoveryHandler.");
 708         }
 709
 710         return  OC_STACK_DELETE_TRANSACTION;
 711     }
 712     else
 713     {
 714         OIC_LOG(INFO, TAG, "Skiping Null response");
 715     }
 716
 717     return  OC_STACK_DELETE_TRANSACTION;
 718 }
 719
 720 static OCStackApplicationResult DeviceDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 721                                 OCClientResponse *clientResponse)
 722 {
 723     if (ctx == NULL)
 724     {
 725         OIC_LOG(ERROR, TAG, "Lost List of device information");
 726         return OC_STACK_KEEP_TRANSACTION;
 727     }
 728     (void)UNUSED;
 729     if (clientResponse)
 730     {
 731         if  (NULL == clientResponse->payload)
 732         {
 733             OIC_LOG(INFO, TAG, "Skiping Null payload");
 734             return OC_STACK_KEEP_TRANSACTION;
 735         }
 736         if (OC_STACK_OK != clientResponse->result)
 737         {
 738             OIC_LOG(INFO, TAG, "Error in response");
 739             return OC_STACK_KEEP_TRANSACTION;
 740         }
 741         else
 742         {
 743             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
 744             {
 745                 OIC_LOG(INFO, TAG, "Unknown payload type");
 746                 return OC_STACK_KEEP_TRANSACTION;
 747             }
 748
 749             OicSecDoxm_t *ptrDoxm = NULL;
 750             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
 751             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
 752
 753             OCStackResult res = CBORPayloadToDoxm(payload, size, &ptrDoxm);
 754             if ((NULL == ptrDoxm) || (OC_STACK_OK != res))
 755             {
 756                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
 757                 return OC_STACK_KEEP_TRANSACTION;
 758             }
 759             else
 760             {
 761                 OIC_LOG(DEBUG, TAG, "Successfully converted doxm cbor to bin.");
 762
 763                 //If this is owend device discovery we have to filter out the responses.
 764                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 765                 OCProvisionDev_t **ppDevicesList = &pDInfo->pCandidateList;
 766
 767                 // Get my device ID from doxm resource
 768                 OicUuid_t myId;
 769                 memset(&myId, 0, sizeof(myId));
 770                 OCStackResult res = GetDoxmDevOwnerId(&myId);
 771                 if(OC_STACK_OK != res)
 772                 {
 773                     OIC_LOG(ERROR, TAG, "Error while getting my device ID.");
 774                     DeleteDoxmBinData(ptrDoxm);
 775                     return OC_STACK_KEEP_TRANSACTION;
 776                 }
 777
 778                 // If this is owned discovery response but owner is not me then discard it.
 779                 if( (pDInfo->isOwnedDiscovery) &&
 780                     (0 != memcmp(&ptrDoxm->owner.id, &myId.id, sizeof(myId.id))) )
 781                 {
 782                     OIC_LOG(DEBUG, TAG, "Discovered device is not owend by me");
 783                     DeleteDoxmBinData(ptrDoxm);
 784                     return OC_STACK_KEEP_TRANSACTION;
 785                 }
 786
 787                 res = GetDoxmDeviceID(&myId);
 788                 if(OC_STACK_OK != res)
 789                 {
 790                     OIC_LOG(ERROR, TAG, "Error while getting my UUID.");
 791                     DeleteDoxmBinData(ptrDoxm);
 792                     return OC_STACK_KEEP_TRANSACTION;
 793                 }
 794                 //if targetId and discovered deviceID are different, discard it
 795                 if ((pDInfo->isSingleDiscovery) &&
 796                     (0 != memcmp(&ptrDoxm->deviceID.id, &pDInfo->targetId->id, sizeof(pDInfo->targetId->id))) )
 797                 {
 798                     OIC_LOG(DEBUG, TAG, "Discovered device is not target device");
 799                     DeleteDoxmBinData(ptrDoxm);
 800                     return OC_STACK_KEEP_TRANSACTION;
 801                 }
 802                 //if this is owned discovery and this is PT's reply, discard it
 803                 if (((pDInfo->isSingleDiscovery) || (pDInfo->isOwnedDiscovery)) &&
 804                         (0 == memcmp(&ptrDoxm->deviceID.id, &myId.id, sizeof(myId.id))) )
 805                 {
 806                     OIC_LOG(DEBUG, TAG, "discarding provision tool's reply");
 807                     DeleteDoxmBinData(ptrDoxm);
 808                     return OC_STACK_KEEP_TRANSACTION;
 809                 }
 810
 811                 res = AddDevice(ppDevicesList, &clientResponse->devAddr,
 812                         clientResponse->connType, ptrDoxm);
 813                 if (OC_STACK_OK != res)
 814                 {
 815                     OIC_LOG(ERROR, TAG, "Error while adding data to linkedlist.");
 816                     DeleteDoxmBinData(ptrDoxm);
 817                     return OC_STACK_KEEP_TRANSACTION;
 818                 }
 819
 820                 res = SecurePortDiscovery(pDInfo, clientResponse);
 821                 if(OC_STACK_OK != res)
 822                 {
 823                     OIC_LOG(ERROR, TAG, "Failed to SecurePortDiscovery");
 824                     DeleteDoxmBinData(ptrDoxm);
 825                     return OC_STACK_KEEP_TRANSACTION;
 826                 }
 827
 828                 OIC_LOG(INFO, TAG, "Exiting ProvisionDiscoveryHandler.");
 829             }
 830
 831             return  OC_STACK_KEEP_TRANSACTION;
 832         }
 833     }
 834     else
 835     {
 836         OIC_LOG(INFO, TAG, "Skiping Null response");
 837         return OC_STACK_KEEP_TRANSACTION;
 838     }
 839
 840     return  OC_STACK_DELETE_TRANSACTION;
 841 }
 842
 843 static void DeviceDiscoveryDeleteHandler(void *ctx)
 844 {
 845     OIC_LOG(DEBUG, TAG, "IN DeviceDiscoveryDeleteHandler");
 846     if (NULL == ctx)
 847     {
 848         OIC_LOG(WARNING, TAG, "Not found context in DeviceDiscoveryDeleteHandler");
 849         return;
 850     }
 851
 852     DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 853     if (NULL != pDInfo->pCandidateList)
 854     {
 855         OCProvisionDev_t *pDev = NULL;
 856         LL_FOREACH(pDInfo->pCandidateList, pDev)
 857         {
 858             OIC_LOG_V(DEBUG, TAG, "OCCancel - %s : %d",
 859                             pDev->endpoint.addr, pDev->endpoint.port);
 860             if(OC_STACK_OK !=  OCCancel(pDev->handle,OC_HIGH_QOS,NULL,0))
 861             {
 862                 OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 863             }
 864         }
 865         PMDeleteDeviceList(pDInfo->pCandidateList);
 866     }
 867     OIC_LOG(DEBUG, TAG, "OUT DeviceDiscoveryDeleteHandler");
 868 }
 869
 870 /**
 871  * Discover owned/unowned device in the specified endpoint/deviceID.
 872  * It will return the found device even though timeout is not exceeded.
 873  *
 874  * @param[in] waittime           Timeout in seconds
 875  * @param[in] deviceID           deviceID of target device.
 876  * @param[out] ppFoundDevice     OCProvisionDev_t of found device
 877  *
 878  * @return OC_STACK_OK on success otherwise error.\n
 879  *         OC_STACK_INVALID_PARAM when deviceID is NULL or ppFoundDevice is not initailized.
 880  */
 881 OCStackResult PMSingleDeviceDiscovery(unsigned short waittime, const OicUuid_t* deviceID,
 882                                  OCProvisionDev_t **ppFoundDevice)
 883 {
 884     OIC_LOG(DEBUG, TAG, "IN PMSingleDeviceDiscovery");
 885
 886     if (NULL != *ppFoundDevice)
 887     {
 888         OIC_LOG(ERROR, TAG, "List is not null can cause memory leak");
 889         return OC_STACK_INVALID_PARAM;
 890     }
 891
 892     if (NULL == deviceID)
 893     {
 894         OIC_LOG(ERROR, TAG, "Invalid device ID");
 895         return OC_STACK_INVALID_PARAM;
 896     }
 897
 898
 899     DiscoveryInfo *pDInfo = OICCalloc(1, sizeof(DiscoveryInfo));
 900     if(NULL == pDInfo)
 901     {
 902         OIC_LOG(ERROR, TAG, "PMSingleDeviceDiscovery : Memory allocation failed.");
 903         return OC_STACK_NO_MEMORY;
 904     }
 905
 906     pDInfo->ppDevicesList = ppFoundDevice;
 907     pDInfo->pCandidateList = NULL;
 908     pDInfo->isOwnedDiscovery = false;
 909     pDInfo->isSingleDiscovery = true;
 910     pDInfo->isFound = false;
 911     pDInfo->targetId = deviceID;
 912
 913     OCCallbackData cbData;
 914     cbData.cb = &DeviceDiscoveryHandler;
 915     cbData.context = (void *)pDInfo;
 916     cbData.cd = &DeviceDiscoveryDeleteHandler;
 917
 918     OCStackResult res = OC_STACK_ERROR;
 919
 920     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH + 1] = { '\0' };
 921     snprintf(query, MAX_URI_LENGTH + MAX_QUERY_LENGTH + 1, "/oic/sec/doxm");
 922
 923     OCDoHandle handle = NULL;
 924     res = OCDoResource(&handle, OC_REST_DISCOVER, query, 0, 0,
 925                                      CT_DEFAULT, OC_HIGH_QOS, &cbData, NULL, 0);
 926     if (res != OC_STACK_OK)
 927     {
 928         OIC_LOG(ERROR, TAG, "OCStack resource error");
 929         OICFree(pDInfo);
 930         return res;
 931     }
 932
 933     //Waiting for each response.
 934     res = OC_STACK_OK;
 935     uint64_t startTime = OICGetCurrentTime(TIME_IN_MS);
 936     while (OC_STACK_OK == res && !pDInfo->isFound)
 937     {
 938         uint64_t currTime = OICGetCurrentTime(TIME_IN_MS);
 939
 940         long elapsed = (long)((currTime - startTime) / MS_PER_SEC);
 941         if (elapsed > waittime)
 942         {
 943             break;
 944         }
 945         res = OCProcess();
 946     }
 947
 948     if(OC_STACK_OK != res)
 949     {
 950         OIC_LOG(ERROR, TAG, "Failed to wait response for secure discovery.");
 951         OICFree(pDInfo);
 952         OCStackResult resCancel = OCCancel(handle, OC_HIGH_QOS, NULL, 0);
 953         if(OC_STACK_OK !=  resCancel)
 954         {
 955             OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 956         }
 957         return res;
 958     }
 959
 960     res = OCCancel(handle,OC_HIGH_QOS,NULL,0);
 961     if (OC_STACK_OK != res)
 962     {
 963         OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 964         OICFree(pDInfo);
 965         return res;
 966     }
 967     OIC_LOG(DEBUG, TAG, "OUT PMSingleDeviceDiscovery");
 968     OICFree(pDInfo);
 969     return res;
 970 }
 971
 972
 973 /**
 974  * Discover owned/unowned devices in the same IP subnet. .
 975  *
 976  * @param[in] waittime      Timeout in seconds.
 977  * @param[in] isOwned       bool flag for owned / unowned discovery
 978  * @param[in] ppDevicesList        List of OCProvisionDev_t.
 979  *
 980  * @return OC_STACK_OK on success otherwise error.
 981  */
 982 OCStackResult PMDeviceDiscovery(unsigned short waittime, bool isOwned, OCProvisionDev_t **ppDevicesList)
 983 {
 984     OIC_LOG(DEBUG, TAG, "IN PMDeviceDiscovery");
 985
 986     if (NULL != *ppDevicesList)
 987     {
 988         OIC_LOG(ERROR, TAG, "List is not null can cause memory leak");
 989         return OC_STACK_INVALID_PARAM;
 990     }
 991
 992     const char DOXM_OWNED_FALSE_MULTICAST_QUERY[] = "/oic/sec/doxm?Owned=FALSE";
 993     const char DOXM_OWNED_TRUE_MULTICAST_QUERY[] = "/oic/sec/doxm?Owned=TRUE";
 994
 995     DiscoveryInfo *pDInfo = OICCalloc(1, sizeof(DiscoveryInfo));
 996     if(NULL == pDInfo)
 997     {
 998         OIC_LOG(ERROR, TAG, "PMDeviceDiscovery : Memory allocation failed.");
 999         return OC_STACK_NO_MEMORY;
1000     }
1001
1002     pDInfo->ppDevicesList = ppDevicesList;
1003     pDInfo->pCandidateList = NULL;
1004     pDInfo->isOwnedDiscovery = isOwned;
1005     pDInfo->isSingleDiscovery = false;
1006     pDInfo->targetId = NULL;
1007
1008     OCCallbackData cbData;
1009     cbData.cb = &DeviceDiscoveryHandler;
1010     cbData.context = (void *)pDInfo;
1011     cbData.cd = &DeviceDiscoveryDeleteHandler;
1012     OCStackResult res = OC_STACK_ERROR;
1013
1014     const char* query = isOwned ? DOXM_OWNED_TRUE_MULTICAST_QUERY :
1015                                   DOXM_OWNED_FALSE_MULTICAST_QUERY;
1016
1017     OCDoHandle handle = NULL;
1018     res = OCDoResource(&handle, OC_REST_DISCOVER, query, 0, 0,
1019                                      CT_DEFAULT, OC_HIGH_QOS, &cbData, NULL, 0);
1020     if (res != OC_STACK_OK)
1021     {
1022         OIC_LOG(ERROR, TAG, "OCStack resource error");
1023         OICFree(pDInfo);
1024         return res;
1025     }
1026
1027     //Waiting for each response.
1028     res = PMTimeout(waittime, true);
1029     if(OC_STACK_OK != res)
1030     {
1031         OIC_LOG(ERROR, TAG, "Failed to wait response for secure discovery.");
1032         OICFree(pDInfo);
1033         OCStackResult resCancel = OCCancel(handle, OC_HIGH_QOS, NULL, 0);
1034         if(OC_STACK_OK !=  resCancel)
1035         {
1036             OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
1037         }
1038         return res;
1039     }
1040     res = OCCancel(handle,OC_HIGH_QOS,NULL,0);
1041     if (OC_STACK_OK != res)
1042     {
1043         OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
1044         OICFree(pDInfo);
1045         return res;
1046     }
1047     OIC_LOG(DEBUG, TAG, "OUT PMDeviceDiscovery");
1048     OICFree(pDInfo);
1049     return res;
1050 }
1051
1052 #ifdef _ENABLE_MULTIPLE_OWNER_
1053 static OCStackApplicationResult MOTDeviceDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
1054                                 OCClientResponse *clientResponse)
1055 {
1056     if (ctx == NULL)
1057     {
1058         OIC_LOG(ERROR, TAG, "Lost List of device information");
1059         return OC_STACK_KEEP_TRANSACTION;
1060     }
1061     (void)UNUSED;
1062     if (clientResponse)
1063     {
1064         if  (NULL == clientResponse->payload)
1065         {
1066             OIC_LOG(INFO, TAG, "Skipping Null payload");
1067             return OC_STACK_KEEP_TRANSACTION;
1068         }
1069         if (OC_STACK_OK != clientResponse->result)
1070         {
1071             OIC_LOG(INFO, TAG, "Error in response");
1072             return OC_STACK_KEEP_TRANSACTION;
1073         }
1074         else
1075         {
1076             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
1077             {
1078                 OIC_LOG(INFO, TAG, "Unknown payload type");
1079                 return OC_STACK_KEEP_TRANSACTION;
1080             }
1081
1082             OicSecDoxm_t *ptrDoxm = NULL;
1083             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
1084             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
1085
1086             OCStackResult res = CBORPayloadToDoxm(payload, size, &ptrDoxm);
1087             if ((NULL == ptrDoxm) || (OC_STACK_OK != res))
1088             {
1089                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
1090                 return OC_STACK_KEEP_TRANSACTION;
1091             }
1092             else
1093             {
1094                 OIC_LOG(DEBUG, TAG, "Successfully converted doxm cbor to bin.");
1095
1096                 //If this is owend device discovery we have to filter out the responses.
1097                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
1098                 OCProvisionDev_t **ppDevicesList = &pDInfo->pCandidateList;
1099
1100                 // Get my device ID from doxm resource
1101                 OicUuid_t myId;
1102                 memset(&myId, 0, sizeof(myId));
1103                 OCStackResult res = GetDoxmDevOwnerId(&myId);
1104                 if(OC_STACK_OK != res)
1105                 {
1106                     OIC_LOG(ERROR, TAG, "Error while getting my device ID.");
1107                     DeleteDoxmBinData(ptrDoxm);
1108                     return OC_STACK_KEEP_TRANSACTION;
1109                 }
1110
1111                 res = GetDoxmDeviceID(&myId);
1112                 if(OC_STACK_OK != res)
1113                 {
1114                     OIC_LOG(ERROR, TAG, "Error while getting my UUID.");
1115                     DeleteDoxmBinData(ptrDoxm);
1116                     return OC_STACK_KEEP_TRANSACTION;
1117                 }
1118                 //if this is owned discovery and this is PT's reply, discard it
1119                 if((pDInfo->isOwnedDiscovery) &&
1120                         (0 == memcmp(&ptrDoxm->deviceID.id, &myId.id, sizeof(myId.id))) )
1121                 {
1122                     OIC_LOG(DEBUG, TAG, "discarding provision tool's reply");
1123                     DeleteDoxmBinData(ptrDoxm);
1124                     return OC_STACK_KEEP_TRANSACTION;
1125                 }
1126
1127                 if(pDInfo->isOwnedDiscovery)
1128                 {
1129                     OicSecSubOwner_t* subOwner = NULL;
1130                     LL_FOREACH(ptrDoxm->subOwners, subOwner)
1131                     {
1132                         if(memcmp(myId.id, subOwner->uuid.id, sizeof(myId.id)) == 0)
1133                         {
1134                             break;
1135                         }
1136                     }
1137
1138                     if(subOwner)
1139                     {
1140                         res = AddDevice(ppDevicesList, &clientResponse->devAddr,
1141                                 clientResponse->connType, ptrDoxm);
1142                         if (OC_STACK_OK != res)
1143                         {
1144                             OIC_LOG(ERROR, TAG, "Error while adding data to linkedlist.");
1145                             DeleteDoxmBinData(ptrDoxm);
1146                             return OC_STACK_KEEP_TRANSACTION;
1147                         }
1148
1149                         res = SecurePortDiscovery(pDInfo, clientResponse);
1150                         if(OC_STACK_OK != res)
1151                         {
1152                             OIC_LOG(ERROR, TAG, "Failed to SecurePortDiscovery");
1153                             DeleteDoxmBinData(ptrDoxm);
1154                             return OC_STACK_KEEP_TRANSACTION;
1155                         }
1156                     }
1157                     else
1158                     {
1159                         OIC_LOG(ERROR, TAG, "discarding device's reply, because not a SubOwner.");
1160                         DeleteDoxmBinData(ptrDoxm);
1161                         return OC_STACK_KEEP_TRANSACTION;
1162                     }
1163                 }
1164                 else
1165                 {
1166                     if(ptrDoxm->mom && OIC_MULTIPLE_OWNER_DISABLE != ptrDoxm->mom->mode)
1167                     {
1168                         res = AddDevice(ppDevicesList, &clientResponse->devAddr,
1169                                 clientResponse->connType, ptrDoxm);
1170                         if (OC_STACK_OK != res)
1171                         {
1172                             OIC_LOG(ERROR, TAG, "Error while adding data to linkedlist.");
1173                             DeleteDoxmBinData(ptrDoxm);
1174                             return OC_STACK_KEEP_TRANSACTION;
1175                         }
1176
1177                         res = SecurePortDiscovery(pDInfo, clientResponse);
1178                         if(OC_STACK_OK != res)
1179                         {
1180                             OIC_LOG(ERROR, TAG, "Failed to SecurePortDiscovery");
1181                             DeleteDoxmBinData(ptrDoxm);
1182                             return OC_STACK_KEEP_TRANSACTION;
1183                         }
1184                     }
1185                     else
1186                     {
1187                         OIC_LOG(ERROR, TAG, "discarding mom disabled device's reply");
1188                         DeleteDoxmBinData(ptrDoxm);
1189                         return OC_STACK_KEEP_TRANSACTION;
1190                     }
1191                 }
1192
1193                 OIC_LOG(INFO, TAG, "Exiting ProvisionDiscoveryHandler.");
1194             }
1195
1196             return  OC_STACK_KEEP_TRANSACTION;
1197         }
1198     }
1199     else
1200     {
1201         OIC_LOG(INFO, TAG, "Skiping Null response");
1202         return OC_STACK_KEEP_TRANSACTION;
1203     }
1204
1205     return  OC_STACK_DELETE_TRANSACTION;
1206 }
1207
1208
1209 /**
1210  * Discover multiple OTM enabled devices in the same IP subnet.
1211  *
1212  * @param[in] waittime      Timeout in seconds.
1213  * @param[in] ppDevicesList        List of OCProvisionDev_t.
1214  *
1215  * @return OC_STACK_OK on success otherwise error.
1216  */
1217 OCStackResult PMMultipleOwnerDeviceDiscovery(unsigned short waittime, bool isMultipleOwned, OCProvisionDev_t **ppDevicesList)
1218 {
1219     OIC_LOG(DEBUG, TAG, "IN PMMultipleOwnerEnabledDeviceDiscovery");
1220
1221     if (NULL != *ppDevicesList)
1222     {
1223         OIC_LOG(ERROR, TAG, "List is not null can cause memory leak");
1224         return OC_STACK_INVALID_PARAM;
1225     }
1226
1227     const char *DOXM_MOM_ENABLE_MULTICAST_QUERY = "/oic/sec/doxm?mom!=0&owned=TRUE";
1228     const char *DOXM_MULTIPLE_OWNED_MULTICAST_QUERY = "/oic/sec/doxm?owned=TRUE";
1229
1230     DiscoveryInfo *pDInfo = OICCalloc(1, sizeof(DiscoveryInfo));
1231     if(NULL == pDInfo)
1232     {
1233         OIC_LOG(ERROR, TAG, "PMDeviceDiscovery : Memory allocation failed.");
1234         return OC_STACK_NO_MEMORY;
1235     }
1236
1237     pDInfo->ppDevicesList = ppDevicesList;
1238     pDInfo->pCandidateList = NULL;
1239     pDInfo->isOwnedDiscovery = isMultipleOwned;
1240
1241     OCCallbackData cbData;
1242     cbData.cb = &MOTDeviceDiscoveryHandler;
1243     cbData.context = (void *)pDInfo;
1244     cbData.cd = NULL;
1245     OCStackResult res = OC_STACK_ERROR;
1246
1247     const char* query = isMultipleOwned ? DOXM_MULTIPLE_OWNED_MULTICAST_QUERY :
1248                                           DOXM_MOM_ENABLE_MULTICAST_QUERY;
1249
1250     OCDoHandle handle = NULL;
1251     res = OCDoResource(&handle, OC_REST_DISCOVER, query, 0, 0,
1252                                      CT_DEFAULT, OC_HIGH_QOS, &cbData, NULL, 0);
1253     if (res != OC_STACK_OK)
1254     {
1255         OIC_LOG(ERROR, TAG, "OCStack resource error");
1256         OICFree(pDInfo);
1257         return res;
1258     }
1259
1260     //Waiting for each response.
1261     res = PMTimeout(waittime, true);
1262     if(OC_STACK_OK != res)
1263     {
1264         OIC_LOG(ERROR, TAG, "Failed to wait response for secure discovery.");
1265         OICFree(pDInfo);
1266         OCStackResult resCancel = OCCancel(handle, OC_HIGH_QOS, NULL, 0);
1267         if(OC_STACK_OK !=  resCancel)
1268         {
1269             OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
1270         }
1271         return res;
1272     }
1273     res = OCCancel(handle,OC_HIGH_QOS,NULL,0);
1274     if (OC_STACK_OK != res)
1275     {
1276         OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
1277         OICFree(pDInfo);
1278         return res;
1279     }
1280     OIC_LOG(DEBUG, TAG, "OUT PMMultipleOwnerEnabledDeviceDiscovery");
1281     OICFree(pDInfo);
1282     return res;
1283 }
1284
1285 #endif //_ENABLE_MULTIPLE_OWNER_
1286
1287 static OCStackResult SecurePortDiscovery(DiscoveryInfo* discoveryInfo,
1288                                          const OCClientResponse *clientResponse)
1289 {
1290     OIC_LOG(DEBUG, TAG, "IN SecurePortDiscovery");
1291
1292     if(NULL == discoveryInfo || NULL == clientResponse)
1293     {
1294         return OC_STACK_INVALID_PARAM;
1295     }
1296
1297     OCProvisionDev_t *pDev = GetDevice(&discoveryInfo->pCandidateList,
1298                         clientResponse->devAddr.addr, clientResponse->devAddr.port);
1299     if(NULL == pDev)
1300     {
1301         OIC_LOG(ERROR, TAG, "SecurePortDiscovery : Failed to get device");
1302         return OC_STACK_ERROR;
1303     }
1304
1305     //Try to the unicast discovery to getting secure port
1306     char query[MAX_URI_LENGTH+MAX_QUERY_LENGTH+1] = {0};
1307     if(!PMGenerateQuery(false,
1308                         pDev->endpoint.addr, pDev->endpoint.port,
1309                         pDev->connType,
1310                         query, sizeof(query), OC_RSRVD_WELL_KNOWN_URI))
1311     {
1312         OIC_LOG(ERROR, TAG, "SecurePortDiscovery : Failed to generate query");
1313         return OC_STACK_ERROR;
1314     }
1315     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
1316
1317     // Set filter query with rt=oic.r.doxm
1318     const char RES_DOXM_QUERY_FMT[] = "%s?%s=%s";
1319     char uri[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
1320     snprintf(uri, sizeof(uri), RES_DOXM_QUERY_FMT, query,
1321             OC_RSRVD_RESOURCE_TYPE, OIC_RSRC_TYPE_SEC_DOXM);
1322
1323     OIC_LOG_V(DEBUG, TAG, "URI=%s", uri);
1324
1325     OCCallbackData cbData;
1326     cbData.cb = &SecurePortDiscoveryHandler;
1327     cbData.context = (void*)discoveryInfo;
1328     cbData.cd = NULL;
1329     OCStackResult ret = OCDoResource(&pDev->handle, OC_REST_DISCOVER, uri, 0, 0,
1330             pDev->connType, OC_HIGH_QOS, &cbData, NULL, 0);
1331     if(OC_STACK_OK != ret)
1332     {
1333         OIC_LOG(ERROR, TAG, "Failed to Secure Port Discovery");
1334         return ret;
1335     }
1336     else
1337     {
1338         OIC_LOG_V(INFO, TAG, "OCDoResource with [%s] Success", query);
1339     }
1340
1341     OIC_LOG(DEBUG, TAG, "OUT SecurePortDiscovery");
1342
1343     return ret;
1344 }
1345
1346 static OCStackResult SecurityVersionDiscovery(DiscoveryInfo* discoveryInfo,
1347                                               const OCClientResponse *clientResponse)
1348 {
1349     OIC_LOG(DEBUG, TAG, "IN SecurityVersionDiscovery");
1350
1351     if(NULL == discoveryInfo || NULL == clientResponse)
1352     {
1353         return OC_STACK_INVALID_PARAM;
1354     }
1355
1356     //Try to the unicast discovery to getting security version
1357     char query[MAX_URI_LENGTH+MAX_QUERY_LENGTH+1] = {0};
1358     if(!PMGenerateQuery(false,
1359                         clientResponse->devAddr.addr, clientResponse->devAddr.port,
1360                         clientResponse->connType,
1361                         query, sizeof(query), OIC_RSRC_VER_URI))
1362     {
1363         OIC_LOG(ERROR, TAG, "SecurityVersionDiscovery : Failed to generate query");
1364         return OC_STACK_ERROR;
1365     }
1366     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
1367
1368     OCCallbackData cbData;
1369     cbData.cb = &SecurityVersionDiscoveryHandler;
1370     cbData.context = (void*)discoveryInfo;
1371     cbData.cd = NULL;
1372     OCStackResult ret = OCDoResource(NULL, OC_REST_DISCOVER, query, 0, 0,
1373             clientResponse->connType, OC_HIGH_QOS, &cbData, NULL, 0);
1374     if(OC_STACK_OK != ret)
1375     {
1376         OIC_LOG(ERROR, TAG, "Failed to Security Version Discovery");
1377         return ret;
1378     }
1379     else
1380     {
1381         OIC_LOG_V(INFO, TAG, "OCDoResource with [%s] Success", query);
1382     }
1383
1384     OIC_LOG(DEBUG, TAG, "OUT SecurityVersionDiscovery");
1385
1386     return ret;
1387 }
1388
1389 /**
1390  * Function to print OCProvisionDev_t for debug purpose.
1391  *
1392  * @param[in] pDev Pointer to OCProvisionDev_t. It's information will be printed by OIC_LOG_XX
1393  *
1394  */
1395 void PMPrintOCProvisionDev(const OCProvisionDev_t* pDev)
1396 {
1397     if (pDev)
1398     {
1399         OIC_LOG(DEBUG, TAG, "+++++ OCProvisionDev_t Information +++++");
1400         OIC_LOG_V(DEBUG, TAG, "IP %s", pDev->endpoint.addr);
1401         OIC_LOG_V(DEBUG, TAG, "PORT %d", pDev->endpoint.port);
1402         OIC_LOG_V(DEBUG, TAG, "S-PORT %d", pDev->securePort);
1403         OIC_LOG(DEBUG, TAG, "++++++++++++++++++++++++++++++++++++++++");
1404     }
1405     else
1406     {
1407         OIC_LOG(DEBUG, TAG, "+++++ OCProvisionDev_t is NULL +++++");
1408     }
1409 }
1410
1411 bool PMDeleteFromUUIDList(OCUuidList_t **pUuidList, OicUuid_t *targetId)
1412 {
1413     if(*pUuidList == NULL || targetId == NULL)
1414     {
1415         return false;
1416     }
1417     OCUuidList_t *tmp1 = NULL,*tmp2=NULL;
1418     LL_FOREACH_SAFE(*pUuidList, tmp1, tmp2)
1419     {
1420         if(0 == memcmp(tmp1->dev.id, targetId->id, sizeof(targetId->id)))
1421         {
1422             LL_DELETE(*pUuidList, tmp1);
1423             OICFree(tmp1);
1424             return true;
1425         }
1426     }
1427     return false;
1428 }