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 ("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                         snRet = snprintf(buffer, bufferSize, "%s[%s]:%d%s",
 482                                          prefix, address, port, uri);
 483                     break;
 484                 default:
 485                     OIC_LOG(ERROR, TAG, "Unknown address format.");
 486                     return false;
 487             }
 488             // snprintf return value check
 489             if (snRet < 0)
 490             {
 491                 OIC_LOG_V(ERROR, TAG, "PMGenerateQuery : Error (snprintf) %d\n", snRet);
 492                 return false;
 493             }
 494             else if ((size_t)snRet >= bufferSize)
 495             {
 496                 OIC_LOG_V(ERROR, TAG, "PMGenerateQuery : Truncated (snprintf) %d\n", snRet);
 497                 return false;
 498             }
 499
 500             break;
 501         // TODO: We need to verify tinyDTLS in below cases
 502         case CT_ADAPTER_GATT_BTLE:
 503         case CT_ADAPTER_RFCOMM_BTEDR:
 504             OIC_LOG(ERROR, TAG, "Not supported connectivity adapter.");
 505             return false;
 506             break;
 507         default:
 508             OIC_LOG(ERROR, TAG, "Unknown connectivity adapter.");
 509             return false;
 510     }
 511
 512     return true;
 513 }
 514
 515 static OCStackApplicationResult SecurityVersionDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 516                                 OCClientResponse *clientResponse)
 517 {
 518     if (ctx == NULL)
 519     {
 520         OIC_LOG(ERROR, TAG, "Lost List of device information");
 521         return OC_STACK_KEEP_TRANSACTION;
 522     }
 523     (void)UNUSED;
 524     if (clientResponse)
 525     {
 526         if  (NULL == clientResponse->payload)
 527         {
 528             OIC_LOG(INFO, TAG, "Skiping Null payload");
 529             return OC_STACK_KEEP_TRANSACTION;
 530         }
 531         if (OC_STACK_OK != clientResponse->result)
 532         {
 533             OIC_LOG(INFO, TAG, "Error in response");
 534             return OC_STACK_KEEP_TRANSACTION;
 535         }
 536         else
 537         {
 538             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
 539             {
 540                 OIC_LOG(INFO, TAG, "Unknown payload type");
 541                 return OC_STACK_KEEP_TRANSACTION;
 542             }
 543
 544             OicSecVer_t *ptrVer = NULL;
 545             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
 546             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
 547
 548             OCStackResult res = CBORPayloadToVer(payload, size, &ptrVer);
 549             if ((NULL == ptrVer) && (OC_STACK_OK != res))
 550             {
 551                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
 552                 return OC_STACK_KEEP_TRANSACTION;
 553             }
 554             else
 555             {
 556                 OIC_LOG(DEBUG, TAG, "Successfully converted ver cbor to bin.");
 557
 558                 //If this is owend device discovery we have to filter out the responses.
 559                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 560                 res = UpdateSecVersionOfDevice(pDInfo->ppDevicesList, clientResponse->devAddr.addr,
 561                                                          clientResponse->devAddr.port, ptrVer->secv);
 562                 if (OC_STACK_OK != res)
 563                 {
 564                     OIC_LOG(ERROR, TAG, "Error while getting security version.");
 565                     DeleteVerBinData(ptrVer);
 566                     return OC_STACK_KEEP_TRANSACTION;
 567                 }
 568
 569                 OIC_LOG(INFO, TAG, "= Discovered security version =");
 570                 OIC_LOG_V(DEBUG, TAG, "IP %s", clientResponse->devAddr.addr);
 571                 OIC_LOG_V(DEBUG, TAG, "PORT %d", clientResponse->devAddr.port);
 572                 OIC_LOG_V(DEBUG, TAG, "VERSION %s", ptrVer->secv);
 573
 574                 OIC_LOG(INFO, TAG, "Exiting SecVersionDiscoveryHandler.");
 575                 DeleteVerBinData(ptrVer);
 576             }
 577         }
 578     }
 579     else
 580     {
 581         OIC_LOG(INFO, TAG, "Skiping Null response");
 582         return OC_STACK_KEEP_TRANSACTION;
 583     }
 584
 585     return  OC_STACK_DELETE_TRANSACTION;
 586 }
 587
 588 static OCStackApplicationResult SecurePortDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 589                                  OCClientResponse *clientResponse)
 590 {
 591     if (ctx == NULL)
 592     {
 593         OIC_LOG(ERROR, TAG, "Lost List of device information");
 594         return OC_STACK_DELETE_TRANSACTION;
 595     }
 596     (void)UNUSED;
 597     if (clientResponse)
 598     {
 599         if  (NULL == clientResponse->payload)
 600         {
 601             OIC_LOG(INFO, TAG, "Skiping Null payload");
 602         }
 603         else
 604         {
 605             if (PAYLOAD_TYPE_DISCOVERY != clientResponse->payload->type)
 606             {
 607                 OIC_LOG(INFO, TAG, "Wrong payload type");
 608                 return OC_STACK_DELETE_TRANSACTION;
 609             }
 610
 611             uint16_t securePort = 0;
 612             OCResourcePayload* resPayload = ((OCDiscoveryPayload*)clientResponse->payload)->resources;
 613
 614             // Use seure port of doxm for OTM and Provision.
 615             while (resPayload)
 616             {
 617                 if (0 == strncmp(resPayload->uri, OIC_RSRC_DOXM_URI, strlen(OIC_RSRC_DOXM_URI)))
 618                 {
 619                     OIC_LOG_V(INFO,TAG,"resPaylod->uri:%s",resPayload->uri);
 620                     OIC_LOG(INFO, TAG, "Found doxm resource.");
 621                     break;
 622                 }
 623                 else
 624                 {
 625                     resPayload = resPayload->next;
 626                 }
 627             }
 628             if (NULL == resPayload)
 629             {
 630                 OIC_LOG(ERROR, TAG, "Can not find doxm resource.");
 631                 return OC_STACK_DELETE_TRANSACTION;
 632             }
 633             if (resPayload && resPayload->secure)
 634             {
 635                 securePort = resPayload->port;
 636             }
 637             else
 638             {
 639                 OIC_LOG(INFO, TAG, "Can not find secure port information.");
 640                 return OC_STACK_DELETE_TRANSACTION;
 641             }
 642 #ifdef __WITH_TLS__
 643             OIC_LOG_V(DEBUG, TAG, "%s: TCP port from discovery = %d", __func__, resPayload->tcpPort);
 644 #endif
 645             DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 646             OCProvisionDev_t *ptr = GetDevice(&pDInfo->pCandidateList,
 647                                                          clientResponse->devAddr.addr,
 648                                                          clientResponse->devAddr.port);
 649             if(!ptr)
 650             {
 651                 OIC_LOG(ERROR, TAG, "Can not find device information in the discovery candidate device list");
 652                 return OC_STACK_DELETE_TRANSACTION;
 653             }
 654
 655             OCStackResult res = UpdateSecurePortOfDevice(&pDInfo->pCandidateList,
 656                                                          clientResponse->devAddr.addr,
 657                                                          clientResponse->devAddr.port,
 658                                                          securePort
 659 #ifdef __WITH_TLS__
 660                                                          ,resPayload->tcpPort
 661 #endif
 662                                                          );
 663             if (OC_STACK_OK != res)
 664             {
 665                 OIC_LOG(ERROR, TAG, "Error while getting secure port.");
 666                 return OC_STACK_DELETE_TRANSACTION;
 667             }
 668
 669             res = MoveDeviceList(pDInfo->ppDevicesList, &pDInfo->pCandidateList, &clientResponse->devAddr);
 670             if(OC_STACK_OK != res)
 671             {
 672                 OIC_LOG(ERROR, TAG, "Error while move the discovered device to list.");
 673                 return OC_STACK_DELETE_TRANSACTION;
 674             }
 675
 676             if(pDInfo->isSingleDiscovery)
 677             {
 678                 pDInfo->isFound = true;
 679             }
 680
 681 /*
 682  * Since security version discovery does not used anymore, disable security version discovery.
 683  * Need to discussion to removing all version discovery related codes.
 684  */
 685 #if 0
 686             res = SecurityVersionDiscovery(pDInfo, clientResponse);
 687             if(OC_STACK_OK != res)
 688             {
 689                 OIC_LOG(ERROR, TAG, "Failed to SecurityVersionDiscovery");
 690                 return OC_STACK_DELETE_TRANSACTION;
 691             }
 692 #endif
 693
 694             OIC_LOG(INFO, TAG, "Exiting SecurePortDiscoveryHandler.");
 695         }
 696
 697         return  OC_STACK_DELETE_TRANSACTION;
 698     }
 699     else
 700     {
 701         OIC_LOG(INFO, TAG, "Skiping Null response");
 702     }
 703
 704     return  OC_STACK_DELETE_TRANSACTION;
 705 }
 706
 707 static OCStackApplicationResult DeviceDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 708                                 OCClientResponse *clientResponse)
 709 {
 710     if (ctx == NULL)
 711     {
 712         OIC_LOG(ERROR, TAG, "Lost List of device information");
 713         return OC_STACK_KEEP_TRANSACTION;
 714     }
 715     (void)UNUSED;
 716     if (clientResponse)
 717     {
 718         if  (NULL == clientResponse->payload)
 719         {
 720             OIC_LOG(INFO, TAG, "Skiping Null payload");
 721             return OC_STACK_KEEP_TRANSACTION;
 722         }
 723         if (OC_STACK_OK != clientResponse->result)
 724         {
 725             OIC_LOG(INFO, TAG, "Error in response");
 726             return OC_STACK_KEEP_TRANSACTION;
 727         }
 728         else
 729         {
 730             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
 731             {
 732                 OIC_LOG(INFO, TAG, "Unknown payload type");
 733                 return OC_STACK_KEEP_TRANSACTION;
 734             }
 735
 736             OicSecDoxm_t *ptrDoxm = NULL;
 737             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
 738             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
 739
 740             OCStackResult res = CBORPayloadToDoxm(payload, size, &ptrDoxm);
 741             if ((NULL == ptrDoxm) || (OC_STACK_OK != res))
 742             {
 743                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
 744                 return OC_STACK_KEEP_TRANSACTION;
 745             }
 746             else
 747             {
 748                 OIC_LOG(DEBUG, TAG, "Successfully converted doxm cbor to bin.");
 749
 750                 //If this is owend device discovery we have to filter out the responses.
 751                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 752                 OCProvisionDev_t **ppDevicesList = &pDInfo->pCandidateList;
 753
 754                 // Get my device ID from doxm resource
 755                 OicUuid_t myId;
 756                 memset(&myId, 0, sizeof(myId));
 757                 OCStackResult res = GetDoxmDevOwnerId(&myId);
 758                 if(OC_STACK_OK != res)
 759                 {
 760                     OIC_LOG(ERROR, TAG, "Error while getting my device ID.");
 761                     DeleteDoxmBinData(ptrDoxm);
 762                     return OC_STACK_KEEP_TRANSACTION;
 763                 }
 764
 765                 // If this is owned discovery response but owner is not me then discard it.
 766                 if( (pDInfo->isOwnedDiscovery) &&
 767                     (0 != memcmp(&ptrDoxm->owner.id, &myId.id, sizeof(myId.id))) )
 768                 {
 769                     OIC_LOG(DEBUG, TAG, "Discovered device is not owend by me");
 770                     DeleteDoxmBinData(ptrDoxm);
 771                     return OC_STACK_KEEP_TRANSACTION;
 772                 }
 773
 774                 res = GetDoxmDeviceID(&myId);
 775                 if(OC_STACK_OK != res)
 776                 {
 777                     OIC_LOG(ERROR, TAG, "Error while getting my UUID.");
 778                     DeleteDoxmBinData(ptrDoxm);
 779                     return OC_STACK_KEEP_TRANSACTION;
 780                 }
 781                 //if targetId and discovered deviceID are different, discard it
 782                 if ((pDInfo->isSingleDiscovery) &&
 783                     (0 != memcmp(&ptrDoxm->deviceID.id, &pDInfo->targetId->id, sizeof(pDInfo->targetId->id))) )
 784                 {
 785                     OIC_LOG(DEBUG, TAG, "Discovered device is not target device");
 786                     DeleteDoxmBinData(ptrDoxm);
 787                     return OC_STACK_KEEP_TRANSACTION;
 788                 }
 789                 //if this is owned discovery and this is PT's reply, discard it
 790                 if (((pDInfo->isSingleDiscovery) || (pDInfo->isOwnedDiscovery)) &&
 791                         (0 == memcmp(&ptrDoxm->deviceID.id, &myId.id, sizeof(myId.id))) )
 792                 {
 793                     OIC_LOG(DEBUG, TAG, "discarding provision tool's reply");
 794                     DeleteDoxmBinData(ptrDoxm);
 795                     return OC_STACK_KEEP_TRANSACTION;
 796                 }
 797
 798                 res = AddDevice(ppDevicesList, &clientResponse->devAddr,
 799                         clientResponse->connType, ptrDoxm);
 800                 if (OC_STACK_OK != res)
 801                 {
 802                     OIC_LOG(ERROR, TAG, "Error while adding data to linkedlist.");
 803                     DeleteDoxmBinData(ptrDoxm);
 804                     return OC_STACK_KEEP_TRANSACTION;
 805                 }
 806
 807                 res = SecurePortDiscovery(pDInfo, clientResponse);
 808                 if(OC_STACK_OK != res)
 809                 {
 810                     OIC_LOG(ERROR, TAG, "Failed to SecurePortDiscovery");
 811                     DeleteDoxmBinData(ptrDoxm);
 812                     return OC_STACK_KEEP_TRANSACTION;
 813                 }
 814
 815                 OIC_LOG(INFO, TAG, "Exiting ProvisionDiscoveryHandler.");
 816             }
 817
 818             return  OC_STACK_KEEP_TRANSACTION;
 819         }
 820     }
 821     else
 822     {
 823         OIC_LOG(INFO, TAG, "Skiping Null response");
 824         return OC_STACK_KEEP_TRANSACTION;
 825     }
 826
 827     return  OC_STACK_DELETE_TRANSACTION;
 828 }
 829
 830 static void DeviceDiscoveryDeleteHandler(void *ctx)
 831 {
 832     OIC_LOG(DEBUG, TAG, "IN DeviceDiscoveryDeleteHandler");
 833     if (NULL == ctx)
 834     {
 835         OIC_LOG(WARNING, TAG, "Not found context in DeviceDiscoveryDeleteHandler");
 836         return;
 837     }
 838
 839     DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 840     if (NULL != pDInfo->pCandidateList)
 841     {
 842         OCProvisionDev_t *pDev = NULL;
 843         LL_FOREACH(pDInfo->pCandidateList, pDev)
 844         {
 845             OIC_LOG_V(DEBUG, TAG, "OCCancel - %s : %d",
 846                             pDev->endpoint.addr, pDev->endpoint.port);
 847             if(OC_STACK_OK !=  OCCancel(pDev->handle,OC_HIGH_QOS,NULL,0))
 848             {
 849                 OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 850             }
 851         }
 852         PMDeleteDeviceList(pDInfo->pCandidateList);
 853     }
 854     OIC_LOG(DEBUG, TAG, "OUT DeviceDiscoveryDeleteHandler");
 855 }
 856
 857 /**
 858  * Discover owned/unowned device in the specified endpoint/deviceID.
 859  * It will return the found device even though timeout is not exceeded.
 860  *
 861  * @param[in] waittime           Timeout in seconds
 862  * @param[in] deviceID           deviceID of target device.
 863  * @param[out] ppFoundDevice     OCProvisionDev_t of found device
 864  *
 865  * @return OC_STACK_OK on success otherwise error.\n
 866  *         OC_STACK_INVALID_PARAM when deviceID is NULL or ppFoundDevice is not initailized.
 867  */
 868 OCStackResult PMSingleDeviceDiscovery(unsigned short waittime, const OicUuid_t* deviceID,
 869                                  OCProvisionDev_t **ppFoundDevice)
 870 {
 871     OIC_LOG(DEBUG, TAG, "IN PMSingleDeviceDiscovery");
 872
 873     if (NULL != *ppFoundDevice)
 874     {
 875         OIC_LOG(ERROR, TAG, "List is not null can cause memory leak");
 876         return OC_STACK_INVALID_PARAM;
 877     }
 878
 879     if (NULL == deviceID)
 880     {
 881         OIC_LOG(ERROR, TAG, "Invalid device ID");
 882         return OC_STACK_INVALID_PARAM;
 883     }
 884
 885
 886     DiscoveryInfo *pDInfo = OICCalloc(1, sizeof(DiscoveryInfo));
 887     if(NULL == pDInfo)
 888     {
 889         OIC_LOG(ERROR, TAG, "PMSingleDeviceDiscovery : Memory allocation failed.");
 890         return OC_STACK_NO_MEMORY;
 891     }
 892
 893     pDInfo->ppDevicesList = ppFoundDevice;
 894     pDInfo->pCandidateList = NULL;
 895     pDInfo->isOwnedDiscovery = false;
 896     pDInfo->isSingleDiscovery = true;
 897     pDInfo->isFound = false;
 898     pDInfo->targetId = deviceID;
 899
 900     OCCallbackData cbData;
 901     cbData.cb = &DeviceDiscoveryHandler;
 902     cbData.context = (void *)pDInfo;
 903     cbData.cd = &DeviceDiscoveryDeleteHandler;
 904
 905     OCStackResult res = OC_STACK_ERROR;
 906
 907     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH + 1] = { '\0' };
 908     snprintf(query, MAX_URI_LENGTH + MAX_QUERY_LENGTH + 1, "/oic/sec/doxm");
 909
 910     OCDoHandle handle = NULL;
 911     res = OCDoResource(&handle, OC_REST_DISCOVER, query, 0, 0,
 912                                      CT_DEFAULT, OC_HIGH_QOS, &cbData, NULL, 0);
 913     if (res != OC_STACK_OK)
 914     {
 915         OIC_LOG(ERROR, TAG, "OCStack resource error");
 916         OICFree(pDInfo);
 917         return res;
 918     }
 919
 920     //Waiting for each response.
 921     res = OC_STACK_OK;
 922     uint64_t startTime = OICGetCurrentTime(TIME_IN_MS);
 923     while (OC_STACK_OK == res && !pDInfo->isFound)
 924     {
 925         uint64_t currTime = OICGetCurrentTime(TIME_IN_MS);
 926
 927         long elapsed = (long)((currTime - startTime) / MS_PER_SEC);
 928         if (elapsed > waittime)
 929         {
 930             break;
 931         }
 932         res = OCProcess();
 933     }
 934
 935     if(OC_STACK_OK != res)
 936     {
 937         OIC_LOG(ERROR, TAG, "Failed to wait response for secure discovery.");
 938         OICFree(pDInfo);
 939         OCStackResult resCancel = OCCancel(handle, OC_HIGH_QOS, NULL, 0);
 940         if(OC_STACK_OK !=  resCancel)
 941         {
 942             OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 943         }
 944         return res;
 945     }
 946
 947     res = OCCancel(handle,OC_HIGH_QOS,NULL,0);
 948     if (OC_STACK_OK != res)
 949     {
 950         OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 951         OICFree(pDInfo);
 952         return res;
 953     }
 954     OIC_LOG(DEBUG, TAG, "OUT PMSingleDeviceDiscovery");
 955     OICFree(pDInfo);
 956     return res;
 957 }
 958
 959
 960 /**
 961  * Discover owned/unowned devices in the same IP subnet. .
 962  *
 963  * @param[in] waittime      Timeout in seconds.
 964  * @param[in] isOwned       bool flag for owned / unowned discovery
 965  * @param[in] ppDevicesList        List of OCProvisionDev_t.
 966  *
 967  * @return OC_STACK_OK on success otherwise error.
 968  */
 969 OCStackResult PMDeviceDiscovery(unsigned short waittime, bool isOwned, OCProvisionDev_t **ppDevicesList)
 970 {
 971     OIC_LOG(DEBUG, TAG, "IN PMDeviceDiscovery");
 972
 973     if (NULL != *ppDevicesList)
 974     {
 975         OIC_LOG(ERROR, TAG, "List is not null can cause memory leak");
 976         return OC_STACK_INVALID_PARAM;
 977     }
 978
 979     const char DOXM_OWNED_FALSE_MULTICAST_QUERY[] = "/oic/sec/doxm?Owned=FALSE";
 980     const char DOXM_OWNED_TRUE_MULTICAST_QUERY[] = "/oic/sec/doxm?Owned=TRUE";
 981
 982     DiscoveryInfo *pDInfo = OICCalloc(1, sizeof(DiscoveryInfo));
 983     if(NULL == pDInfo)
 984     {
 985         OIC_LOG(ERROR, TAG, "PMDeviceDiscovery : Memory allocation failed.");
 986         return OC_STACK_NO_MEMORY;
 987     }
 988
 989     pDInfo->ppDevicesList = ppDevicesList;
 990     pDInfo->pCandidateList = NULL;
 991     pDInfo->isOwnedDiscovery = isOwned;
 992     pDInfo->isSingleDiscovery = false;
 993     pDInfo->targetId = NULL;
 994
 995     OCCallbackData cbData;
 996     cbData.cb = &DeviceDiscoveryHandler;
 997     cbData.context = (void *)pDInfo;
 998     cbData.cd = &DeviceDiscoveryDeleteHandler;
 999     OCStackResult res = OC_STACK_ERROR;
1000
1001     const char* query = isOwned ? DOXM_OWNED_TRUE_MULTICAST_QUERY :
1002                                   DOXM_OWNED_FALSE_MULTICAST_QUERY;
1003
1004     OCDoHandle handle = NULL;
1005     res = OCDoResource(&handle, OC_REST_DISCOVER, query, 0, 0,
1006                                      CT_DEFAULT, OC_HIGH_QOS, &cbData, NULL, 0);
1007     if (res != OC_STACK_OK)
1008     {
1009         OIC_LOG(ERROR, TAG, "OCStack resource error");
1010         OICFree(pDInfo);
1011         return res;
1012     }
1013
1014     //Waiting for each response.
1015     res = PMTimeout(waittime, true);
1016     if(OC_STACK_OK != res)
1017     {
1018         OIC_LOG(ERROR, TAG, "Failed to wait response for secure discovery.");
1019         OICFree(pDInfo);
1020         OCStackResult resCancel = OCCancel(handle, OC_HIGH_QOS, NULL, 0);
1021         if(OC_STACK_OK !=  resCancel)
1022         {
1023             OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
1024         }
1025         return res;
1026     }
1027     res = OCCancel(handle,OC_HIGH_QOS,NULL,0);
1028     if (OC_STACK_OK != res)
1029     {
1030         OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
1031         OICFree(pDInfo);
1032         return res;
1033     }
1034     OIC_LOG(DEBUG, TAG, "OUT PMDeviceDiscovery");
1035     OICFree(pDInfo);
1036     return res;
1037 }
1038
1039 #ifdef _ENABLE_MULTIPLE_OWNER_
1040 static OCStackApplicationResult MOTDeviceDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
1041                                 OCClientResponse *clientResponse)
1042 {
1043     if (ctx == NULL)
1044     {
1045         OIC_LOG(ERROR, TAG, "Lost List of device information");
1046         return OC_STACK_KEEP_TRANSACTION;
1047     }
1048     (void)UNUSED;
1049     if (clientResponse)
1050     {
1051         if  (NULL == clientResponse->payload)
1052         {
1053             OIC_LOG(INFO, TAG, "Skipping Null payload");
1054             return OC_STACK_KEEP_TRANSACTION;
1055         }
1056         if (OC_STACK_OK != clientResponse->result)
1057         {
1058             OIC_LOG(INFO, TAG, "Error in response");
1059             return OC_STACK_KEEP_TRANSACTION;
1060         }
1061         else
1062         {
1063             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
1064             {
1065                 OIC_LOG(INFO, TAG, "Unknown payload type");
1066                 return OC_STACK_KEEP_TRANSACTION;
1067             }
1068
1069             OicSecDoxm_t *ptrDoxm = NULL;
1070             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
1071             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
1072
1073             OCStackResult res = CBORPayloadToDoxm(payload, size, &ptrDoxm);
1074             if ((NULL == ptrDoxm) || (OC_STACK_OK != res))
1075             {
1076                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
1077                 return OC_STACK_KEEP_TRANSACTION;
1078             }
1079             else
1080             {
1081                 OIC_LOG(DEBUG, TAG, "Successfully converted doxm cbor to bin.");
1082
1083                 //If this is owend device discovery we have to filter out the responses.
1084                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
1085                 OCProvisionDev_t **ppDevicesList = &pDInfo->pCandidateList;
1086
1087                 // Get my device ID from doxm resource
1088                 OicUuid_t myId;
1089                 memset(&myId, 0, sizeof(myId));
1090                 OCStackResult res = GetDoxmDevOwnerId(&myId);
1091                 if(OC_STACK_OK != res)
1092                 {
1093                     OIC_LOG(ERROR, TAG, "Error while getting my device ID.");
1094                     DeleteDoxmBinData(ptrDoxm);
1095                     return OC_STACK_KEEP_TRANSACTION;
1096                 }
1097
1098                 res = GetDoxmDeviceID(&myId);
1099                 if(OC_STACK_OK != res)
1100                 {
1101                     OIC_LOG(ERROR, TAG, "Error while getting my UUID.");
1102                     DeleteDoxmBinData(ptrDoxm);
1103                     return OC_STACK_KEEP_TRANSACTION;
1104                 }
1105                 //if this is owned discovery and this is PT's reply, discard it
1106                 if((pDInfo->isOwnedDiscovery) &&
1107                         (0 == memcmp(&ptrDoxm->deviceID.id, &myId.id, sizeof(myId.id))) )
1108                 {
1109                     OIC_LOG(DEBUG, TAG, "discarding provision tool's reply");
1110                     DeleteDoxmBinData(ptrDoxm);
1111                     return OC_STACK_KEEP_TRANSACTION;
1112                 }
1113
1114                 if(pDInfo->isOwnedDiscovery)
1115                 {
1116                     OicSecSubOwner_t* subOwner = NULL;
1117                     LL_FOREACH(ptrDoxm->subOwners, subOwner)
1118                     {
1119                         if(memcmp(myId.id, subOwner->uuid.id, sizeof(myId.id)) == 0)
1120                         {
1121                             break;
1122                         }
1123                     }
1124
1125                     if(subOwner)
1126                     {
1127                         res = AddDevice(ppDevicesList, &clientResponse->devAddr,
1128                                 clientResponse->connType, ptrDoxm);
1129                         if (OC_STACK_OK != res)
1130                         {
1131                             OIC_LOG(ERROR, TAG, "Error while adding data to linkedlist.");
1132                             DeleteDoxmBinData(ptrDoxm);
1133                             return OC_STACK_KEEP_TRANSACTION;
1134                         }
1135
1136                         res = SecurePortDiscovery(pDInfo, clientResponse);
1137                         if(OC_STACK_OK != res)
1138                         {
1139                             OIC_LOG(ERROR, TAG, "Failed to SecurePortDiscovery");
1140                             DeleteDoxmBinData(ptrDoxm);
1141                             return OC_STACK_KEEP_TRANSACTION;
1142                         }
1143                     }
1144                     else
1145                     {
1146                         OIC_LOG(ERROR, TAG, "discarding device's reply, because not a SubOwner.");
1147                         DeleteDoxmBinData(ptrDoxm);
1148                         return OC_STACK_KEEP_TRANSACTION;
1149                     }
1150                 }
1151                 else
1152                 {
1153                     if(ptrDoxm->mom && OIC_MULTIPLE_OWNER_DISABLE != ptrDoxm->mom->mode)
1154                     {
1155                         res = AddDevice(ppDevicesList, &clientResponse->devAddr,
1156                                 clientResponse->connType, ptrDoxm);
1157                         if (OC_STACK_OK != res)
1158                         {
1159                             OIC_LOG(ERROR, TAG, "Error while adding data to linkedlist.");
1160                             DeleteDoxmBinData(ptrDoxm);
1161                             return OC_STACK_KEEP_TRANSACTION;
1162                         }
1163
1164                         res = SecurePortDiscovery(pDInfo, clientResponse);
1165                         if(OC_STACK_OK != res)
1166                         {
1167                             OIC_LOG(ERROR, TAG, "Failed to SecurePortDiscovery");
1168                             DeleteDoxmBinData(ptrDoxm);
1169                             return OC_STACK_KEEP_TRANSACTION;
1170                         }
1171                     }
1172                     else
1173                     {
1174                         OIC_LOG(ERROR, TAG, "discarding mom disabled device's reply");
1175                         DeleteDoxmBinData(ptrDoxm);
1176                         return OC_STACK_KEEP_TRANSACTION;
1177                     }
1178                 }
1179
1180                 OIC_LOG(INFO, TAG, "Exiting ProvisionDiscoveryHandler.");
1181             }
1182
1183             return  OC_STACK_KEEP_TRANSACTION;
1184         }
1185     }
1186     else
1187     {
1188         OIC_LOG(INFO, TAG, "Skiping Null response");
1189         return OC_STACK_KEEP_TRANSACTION;
1190     }
1191
1192     return  OC_STACK_DELETE_TRANSACTION;
1193 }
1194
1195
1196 /**
1197  * Discover multiple OTM enabled devices in the same IP subnet.
1198  *
1199  * @param[in] waittime      Timeout in seconds.
1200  * @param[in] ppDevicesList        List of OCProvisionDev_t.
1201  *
1202  * @return OC_STACK_OK on success otherwise error.
1203  */
1204 OCStackResult PMMultipleOwnerDeviceDiscovery(unsigned short waittime, bool isMultipleOwned, OCProvisionDev_t **ppDevicesList)
1205 {
1206     OIC_LOG(DEBUG, TAG, "IN PMMultipleOwnerEnabledDeviceDiscovery");
1207
1208     if (NULL != *ppDevicesList)
1209     {
1210         OIC_LOG(ERROR, TAG, "List is not null can cause memory leak");
1211         return OC_STACK_INVALID_PARAM;
1212     }
1213
1214     const char *DOXM_MOM_ENABLE_MULTICAST_QUERY = "/oic/sec/doxm?mom!=0&owned=TRUE";
1215     const char *DOXM_MULTIPLE_OWNED_MULTICAST_QUERY = "/oic/sec/doxm?owned=TRUE";
1216
1217     DiscoveryInfo *pDInfo = OICCalloc(1, sizeof(DiscoveryInfo));
1218     if(NULL == pDInfo)
1219     {
1220         OIC_LOG(ERROR, TAG, "PMDeviceDiscovery : Memory allocation failed.");
1221         return OC_STACK_NO_MEMORY;
1222     }
1223
1224     pDInfo->ppDevicesList = ppDevicesList;
1225     pDInfo->pCandidateList = NULL;
1226     pDInfo->isOwnedDiscovery = isMultipleOwned;
1227
1228     OCCallbackData cbData;
1229     cbData.cb = &MOTDeviceDiscoveryHandler;
1230     cbData.context = (void *)pDInfo;
1231     cbData.cd = NULL;
1232     OCStackResult res = OC_STACK_ERROR;
1233
1234     const char* query = isMultipleOwned ? DOXM_MULTIPLE_OWNED_MULTICAST_QUERY :
1235                                           DOXM_MOM_ENABLE_MULTICAST_QUERY;
1236
1237     OCDoHandle handle = NULL;
1238     res = OCDoResource(&handle, OC_REST_DISCOVER, query, 0, 0,
1239                                      CT_DEFAULT, OC_HIGH_QOS, &cbData, NULL, 0);
1240     if (res != OC_STACK_OK)
1241     {
1242         OIC_LOG(ERROR, TAG, "OCStack resource error");
1243         OICFree(pDInfo);
1244         return res;
1245     }
1246
1247     //Waiting for each response.
1248     res = PMTimeout(waittime, true);
1249     if(OC_STACK_OK != res)
1250     {
1251         OIC_LOG(ERROR, TAG, "Failed to wait response for secure discovery.");
1252         OICFree(pDInfo);
1253         OCStackResult resCancel = OCCancel(handle, OC_HIGH_QOS, NULL, 0);
1254         if(OC_STACK_OK !=  resCancel)
1255         {
1256             OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
1257         }
1258         return res;
1259     }
1260     res = OCCancel(handle,OC_HIGH_QOS,NULL,0);
1261     if (OC_STACK_OK != res)
1262     {
1263         OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
1264         OICFree(pDInfo);
1265         return res;
1266     }
1267     OIC_LOG(DEBUG, TAG, "OUT PMMultipleOwnerEnabledDeviceDiscovery");
1268     OICFree(pDInfo);
1269     return res;
1270 }
1271
1272 #endif //_ENABLE_MULTIPLE_OWNER_
1273
1274 static OCStackResult SecurePortDiscovery(DiscoveryInfo* discoveryInfo,
1275                                          const OCClientResponse *clientResponse)
1276 {
1277     OIC_LOG(DEBUG, TAG, "IN SecurePortDiscovery");
1278
1279     if(NULL == discoveryInfo || NULL == clientResponse)
1280     {
1281         return OC_STACK_INVALID_PARAM;
1282     }
1283
1284     OCProvisionDev_t *pDev = GetDevice(&discoveryInfo->pCandidateList,
1285                         clientResponse->devAddr.addr, clientResponse->devAddr.port);
1286     if(NULL == pDev)
1287     {
1288         OIC_LOG(ERROR, TAG, "SecurePortDiscovery : Failed to get device");
1289         return OC_STACK_ERROR;
1290     }
1291
1292     //Try to the unicast discovery to getting secure port
1293     char query[MAX_URI_LENGTH+MAX_QUERY_LENGTH+1] = {0};
1294     if(!PMGenerateQuery(false,
1295                         pDev->endpoint.addr, pDev->endpoint.port,
1296                         pDev->connType,
1297                         query, sizeof(query), OC_RSRVD_WELL_KNOWN_URI))
1298     {
1299         OIC_LOG(ERROR, TAG, "SecurePortDiscovery : Failed to generate query");
1300         return OC_STACK_ERROR;
1301     }
1302     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
1303
1304     // Set filter query with rt=oic.r.doxm
1305     const char RES_DOXM_QUERY_FMT[] = "%s?%s=%s";
1306     char uri[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
1307     snprintf(uri, sizeof(uri), RES_DOXM_QUERY_FMT, query,
1308             OC_RSRVD_RESOURCE_TYPE, OIC_RSRC_TYPE_SEC_DOXM);
1309
1310     OIC_LOG_V(DEBUG, TAG, "URI=%s", uri);
1311
1312     OCCallbackData cbData;
1313     cbData.cb = &SecurePortDiscoveryHandler;
1314     cbData.context = (void*)discoveryInfo;
1315     cbData.cd = NULL;
1316     OCStackResult ret = OCDoResource(&pDev->handle, OC_REST_DISCOVER, uri, 0, 0,
1317             pDev->connType, OC_HIGH_QOS, &cbData, NULL, 0);
1318     if(OC_STACK_OK != ret)
1319     {
1320         OIC_LOG(ERROR, TAG, "Failed to Secure Port Discovery");
1321         return ret;
1322     }
1323     else
1324     {
1325         OIC_LOG_V(INFO, TAG, "OCDoResource with [%s] Success", query);
1326     }
1327
1328     OIC_LOG(DEBUG, TAG, "OUT SecurePortDiscovery");
1329
1330     return ret;
1331 }
1332
1333 static OCStackResult SecurityVersionDiscovery(DiscoveryInfo* discoveryInfo,
1334                                               const OCClientResponse *clientResponse)
1335 {
1336     OIC_LOG(DEBUG, TAG, "IN SecurityVersionDiscovery");
1337
1338     if(NULL == discoveryInfo || NULL == clientResponse)
1339     {
1340         return OC_STACK_INVALID_PARAM;
1341     }
1342
1343     //Try to the unicast discovery to getting security version
1344     char query[MAX_URI_LENGTH+MAX_QUERY_LENGTH+1] = {0};
1345     if(!PMGenerateQuery(false,
1346                         clientResponse->devAddr.addr, clientResponse->devAddr.port,
1347                         clientResponse->connType,
1348                         query, sizeof(query), OIC_RSRC_VER_URI))
1349     {
1350         OIC_LOG(ERROR, TAG, "SecurityVersionDiscovery : Failed to generate query");
1351         return OC_STACK_ERROR;
1352     }
1353     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
1354
1355     OCCallbackData cbData;
1356     cbData.cb = &SecurityVersionDiscoveryHandler;
1357     cbData.context = (void*)discoveryInfo;
1358     cbData.cd = NULL;
1359     OCStackResult ret = OCDoResource(NULL, OC_REST_DISCOVER, query, 0, 0,
1360             clientResponse->connType, OC_HIGH_QOS, &cbData, NULL, 0);
1361     if(OC_STACK_OK != ret)
1362     {
1363         OIC_LOG(ERROR, TAG, "Failed to Security Version Discovery");
1364         return ret;
1365     }
1366     else
1367     {
1368         OIC_LOG_V(INFO, TAG, "OCDoResource with [%s] Success", query);
1369     }
1370
1371     OIC_LOG(DEBUG, TAG, "OUT SecurityVersionDiscovery");
1372
1373     return ret;
1374 }
1375
1376 /**
1377  * Function to print OCProvisionDev_t for debug purpose.
1378  *
1379  * @param[in] pDev Pointer to OCProvisionDev_t. It's information will be printed by OIC_LOG_XX
1380  *
1381  */
1382 void PMPrintOCProvisionDev(const OCProvisionDev_t* pDev)
1383 {
1384     if (pDev)
1385     {
1386         OIC_LOG(DEBUG, TAG, "+++++ OCProvisionDev_t Information +++++");
1387         OIC_LOG_V(DEBUG, TAG, "IP %s", pDev->endpoint.addr);
1388         OIC_LOG_V(DEBUG, TAG, "PORT %d", pDev->endpoint.port);
1389         OIC_LOG_V(DEBUG, TAG, "S-PORT %d", pDev->securePort);
1390         OIC_LOG(DEBUG, TAG, "++++++++++++++++++++++++++++++++++++++++");
1391     }
1392     else
1393     {
1394         OIC_LOG(DEBUG, TAG, "+++++ OCProvisionDev_t is NULL +++++");
1395     }
1396 }
1397
1398 bool PMDeleteFromUUIDList(OCUuidList_t **pUuidList, OicUuid_t *targetId)
1399 {
1400     if(*pUuidList == NULL || targetId == NULL)
1401     {
1402         return false;
1403     }
1404     OCUuidList_t *tmp1 = NULL,*tmp2=NULL;
1405     LL_FOREACH_SAFE(*pUuidList, tmp1, tmp2)
1406     {
1407         if(0 == memcmp(tmp1->dev.id, targetId->id, sizeof(targetId->id)))
1408         {
1409             LL_DELETE(*pUuidList, tmp1);
1410             OICFree(tmp1);
1411             return true;
1412         }
1413     }
1414     return false;
1415 }