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 #if HAVE_UNISTD_H
  25 #include <unistd.h>
  26 #endif
  27 #ifdef HAVE_WINDOWS_H
  28 #include <windows.h>
  29 #endif
  30 #ifdef HAVE_STRING_H
  31 #include <string.h>
  32 #endif
  33 #ifdef HAVE_TIME_H
  34 #include <time.h>
  35 #endif
  36 #ifdef HAVE_SYS_TIME_H
  37 #include <sys/time.h>
  38 #endif
  39
  40 #include "ocstack.h"
  41 #include "oic_malloc.h"
  42 #include "oic_string.h"
  43 #include "logger.h"
  44 #include "cJSON.h"
  45 #include "utlist.h"
  46 #include "ocpayload.h"
  47
  48 #include "securevirtualresourcetypes.h"
  49 #include "srmresourcestrings.h" //@note: SRM's internal header
  50 #include "doxmresource.h"       //@note: SRM's internal header
  51 #include "pstatresource.h"      //@note: SRM's internal header
  52 #include "verresource.h"      //@note: SRM's internal header
  53
  54 #include "pmtypes.h"
  55 #include "pmutility.h"
  56
  57 #include "srmutility.h"
  58
  59 #define TAG ("PM-UTILITY")
  60
  61 typedef struct _DiscoveryInfo{
  62     OCProvisionDev_t    **ppDevicesList;
  63     bool                isOwnedDiscovery;
  64 } DiscoveryInfo;
  65
  66 /*
  67  * Function to discover secre port information through unicast
  68  *
  69  * @param[in] discoveryInfo The pointer of discovery information to matain result of discovery
  70  * @param[in] clientResponse  Response information(It will contain payload)
  71  *
  72  * @return OC_STACK_OK on success otherwise error.
  73  */
  74 static OCStackResult SecurePortDiscovery(DiscoveryInfo* discoveryInfo,
  75                                          const OCClientResponse *clientResponse);
  76
  77 /*
  78  * Function to discover security version information through unicast
  79  *
  80  * @param[in] discoveryInfo The pointer of discovery information to matain result of discovery
  81  * @param[in] clientResponse  Response information(It will contain payload)
  82  *
  83  * @return OC_STACK_OK on success otherwise error.
  84  */
  85 static OCStackResult SecurityVersionDiscovery(DiscoveryInfo* discoveryInfo,
  86                                               const OCClientResponse *clientResponse);
  87
  88 /**
  89  * Callback handler for PMDeviceDiscovery API.
  90  *
  91  * @param[in] ctx             User context
  92  * @param[in] handle          Handler for response
  93  * @param[in] clientResponse  Response information (It will contain payload)
  94  * @return OC_STACK_KEEP_TRANSACTION to keep transaction and
  95  *         OC_STACK_DELETE_TRANSACTION to delete it.
  96  */
  97 static OCStackApplicationResult DeviceDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
  98                                 OCClientResponse *clientResponse);
  99
 100 /**
 101  * Callback handler for getting secure port information using /oic/res discovery.
 102  *
 103  * @param[in] ctx             user context
 104  * @param[in] handle          Handle for response
 105  * @param[in] clientResponse  Response information(It will contain payload)
 106  *
 107  * @return OC_STACK_KEEP_TRANSACTION to keep transaction and
 108  *         OC_STACK_DELETE_TRANSACTION to delete it.
 109  */
 110 static OCStackApplicationResult SecurePortDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 111                                  OCClientResponse *clientResponse);
 112
 113 /**
 114  * Callback handler for security version discovery.
 115  *
 116  * @param[in] ctx             User context
 117  * @param[in] handle          Handler for response
 118  * @param[in] clientResponse  Response information (It will contain payload)
 119  * @return OC_STACK_KEEP_TRANSACTION to keep transaction and
 120  *         OC_STACK_DELETE_TRANSACTION to delete it.
 121  */
 122 static OCStackApplicationResult SecVersionDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 123                                 OCClientResponse *clientResponse);
 124
 125 /**
 126  * Function to search node in linked list that matches given IP and port.
 127  *
 128  * @param[in] pList         List of OCProvisionDev_t.
 129  * @param[in] addr          address of target device.
 130  * @param[in] port          port of remote server.
 131  *
 132  * @return pointer of OCProvisionDev_t if exist, otherwise NULL
 133  */
 134 OCProvisionDev_t* GetDevice(OCProvisionDev_t **ppDevicesList, const char* addr, const uint16_t port)
 135 {
 136     if(NULL == addr || NULL == *ppDevicesList)
 137     {
 138         OIC_LOG_V(ERROR, TAG, "Invalid Input parameters in [%s]\n", __FUNCTION__);
 139         return NULL;
 140     }
 141
 142     OCProvisionDev_t *ptr = NULL;
 143     LL_FOREACH(*ppDevicesList, ptr)
 144     {
 145         if( strcmp(ptr->endpoint.addr, addr) == 0 && port == ptr->endpoint.port)
 146         {
 147             return ptr;
 148         }
 149     }
 150
 151     return NULL;
 152 }
 153
 154
 155 /**
 156  * Add device information to list.
 157  *
 158  * @param[in] pList         List of OCProvisionDev_t.
 159  * @param[in] addr          address of target device.
 160  * @param[in] port          port of remote server.
 161  * @param[in] adapter       adapter type of endpoint.
 162  * @param[in] doxm          pointer to doxm instance.
 163  * @param[in] connType  connectivity type of endpoint
 164  *
 165  * @return OC_STACK_OK for success and errorcode otherwise.
 166  */
 167 OCStackResult AddDevice(OCProvisionDev_t **ppDevicesList, const char* addr, const uint16_t port,
 168                         OCTransportAdapter adapter, OCConnectivityType connType, OicSecDoxm_t *doxm)
 169 {
 170     if (NULL == addr)
 171     {
 172         return OC_STACK_INVALID_PARAM;
 173     }
 174
 175     OCProvisionDev_t *ptr = GetDevice(ppDevicesList, addr, port);
 176     if(!ptr)
 177     {
 178         ptr = (OCProvisionDev_t *)OICCalloc(1, sizeof (OCProvisionDev_t));
 179         if (NULL == ptr)
 180         {
 181             OIC_LOG(ERROR, TAG, "Error while allocating memory for linkedlist node !!");
 182             return OC_STACK_NO_MEMORY;
 183         }
 184
 185         OICStrcpy(ptr->endpoint.addr, MAX_ADDR_STR_SIZE, addr);
 186         ptr->endpoint.port = port;
 187         ptr->doxm = doxm;
 188         ptr->securePort = DEFAULT_SECURE_PORT;
 189         ptr->endpoint.adapter = adapter;
 190         ptr->next = NULL;
 191         ptr->connType = connType;
 192         ptr->devStatus = DEV_STATUS_ON; //AddDevice is called when discovery(=alive)
 193         OICStrcpy(ptr->secVer, MAX_VERSION_LEN, DEFAULT_SEC_VERSION); // version initialization
 194
 195         LL_PREPEND(*ppDevicesList, ptr);
 196     }
 197
 198     return OC_STACK_OK;
 199 }
 200
 201 /**
 202  * Function to set secure port information from the given list of devices.
 203  *
 204  * @param[in] pList         List of OCProvisionDev_t.
 205  * @param[in] addr          address of target device.
 206  * @param[in] port          port of remote server.
 207  * @param[in] secureport    secure port information.
 208  *
 209  * @return OC_STACK_OK for success and errorcode otherwise.
 210  */
 211 OCStackResult UpdateSecurePortOfDevice(OCProvisionDev_t **ppDevicesList, const char *addr,
 212                                        uint16_t port, uint16_t securePort)
 213 {
 214     OCProvisionDev_t *ptr = GetDevice(ppDevicesList, addr, port);
 215
 216     if(!ptr)
 217     {
 218         OIC_LOG(ERROR, TAG, "Can not find device information in the discovery device list");
 219         return OC_STACK_ERROR;
 220     }
 221
 222     ptr->securePort = securePort;
 223
 224     return OC_STACK_OK;
 225 }
 226
 227 /**
 228  * Function to set security version information from the given list of devices.
 229  *
 230  * @param[in] pList         List of OCProvisionDev_t.
 231  * @param[in] addr          address of target device.
 232  * @param[in] port          port of remote server.
 233  * @param[in] secVer    security version information.
 234  *
 235  * @return OC_STACK_OK for success and errorcode otherwise.
 236  */
 237 OCStackResult UpdateSecVersionOfDevice(OCProvisionDev_t **ppDevicesList, const char *addr,
 238                                        uint16_t port, const char* secVer)
 239 {
 240     if (NULL == secVer)
 241     {
 242         return OC_STACK_INVALID_PARAM;
 243     }
 244
 245     OCProvisionDev_t *ptr = GetDevice(ppDevicesList, addr, port);
 246
 247     if(!ptr)
 248     {
 249         OIC_LOG(ERROR, TAG, "Can not find device information in the discovery device list");
 250         return OC_STACK_ERROR;
 251     }
 252
 253     OICStrcpy(ptr->secVer, MAX_VERSION_LEN, secVer);
 254
 255     return OC_STACK_OK;
 256 }
 257
 258 /**
 259  * This function deletes list of provision target devices
 260  *
 261  * @param[in] pDevicesList         List of OCProvisionDev_t.
 262  */
 263 void PMDeleteDeviceList(OCProvisionDev_t *pDevicesList)
 264 {
 265     if(pDevicesList)
 266     {
 267         OCProvisionDev_t *del = NULL, *tmp = NULL;
 268         LL_FOREACH_SAFE(pDevicesList, del, tmp)
 269         {
 270             LL_DELETE(pDevicesList, del);
 271
 272             DeleteDoxmBinData(del->doxm);
 273             DeletePstatBinData(del->pstat);
 274             OICFree(del);
 275         }
 276     }
 277 }
 278
 279 OCProvisionDev_t* PMCloneOCProvisionDev(const OCProvisionDev_t* src)
 280 {
 281     OIC_LOG(DEBUG, TAG, "IN PMCloneOCProvisionDev");
 282
 283     if (!src)
 284     {
 285         OIC_LOG(ERROR, TAG, "PMCloneOCProvisionDev : Invalid parameter");
 286         return NULL;
 287     }
 288
 289     // TODO: Consider use VERIFY_NON_NULL instead of if ( null check ) { goto exit; }
 290     OCProvisionDev_t* newDev = (OCProvisionDev_t*)OICCalloc(1, sizeof(OCProvisionDev_t));
 291     VERIFY_NON_NULL(TAG, newDev, ERROR);
 292
 293     memcpy(&newDev->endpoint, &src->endpoint, sizeof(OCDevAddr));
 294
 295     if (src->pstat)
 296     {
 297         newDev->pstat= (OicSecPstat_t*)OICCalloc(1, sizeof(OicSecPstat_t));
 298         VERIFY_NON_NULL(TAG, newDev->pstat, ERROR);
 299
 300         memcpy(newDev->pstat, src->pstat, sizeof(OicSecPstat_t));
 301         // We have to assign NULL for not necessary information to prevent memory corruption.
 302         newDev->pstat->sm = NULL;
 303     }
 304
 305     if (src->doxm)
 306     {
 307         newDev->doxm = (OicSecDoxm_t*)OICCalloc(1, sizeof(OicSecDoxm_t));
 308         VERIFY_NON_NULL(TAG, newDev->doxm, ERROR);
 309
 310         memcpy(newDev->doxm, src->doxm, sizeof(OicSecDoxm_t));
 311         // We have to assign NULL for not necessary information to prevent memory corruption.
 312         newDev->doxm->oxmType = NULL;
 313         newDev->doxm->oxm = NULL;
 314     }
 315
 316     if (0 == strlen(src->secVer))
 317     {
 318         OICStrcpy(newDev->secVer, MAX_VERSION_LEN, DEFAULT_SEC_VERSION);
 319     }
 320     else
 321     {
 322         OICStrcpy(newDev->secVer, MAX_VERSION_LEN, src->secVer);
 323     }
 324
 325     newDev->securePort = src->securePort;
 326     newDev->devStatus = src->devStatus;
 327     newDev->connType = src->connType;
 328     newDev->next = NULL;
 329
 330     OIC_LOG(DEBUG, TAG, "OUT PMCloneOCProvisionDev");
 331
 332     return newDev;
 333
 334 exit:
 335     OIC_LOG(ERROR, TAG, "PMCloneOCProvisionDev : Failed to allocate memory");
 336     if (newDev)
 337     {
 338         OICFree(newDev->pstat);
 339         OICFree(newDev->doxm);
 340         OICFree(newDev);
 341     }
 342     return NULL;
 343 }
 344
 345 /**
 346  * Timeout implementation for secure discovery. When performing secure discovery,
 347  * we should wait a certain period of time for getting response of each devices.
 348  *
 349  * @param[in]  waittime  Timeout in seconds.
 350  * @param[in]  waitForStackResponse if true timeout function will call OCProcess while waiting.
 351  * @return OC_STACK_OK on success otherwise error.
 352  */
 353 OCStackResult PMTimeout(unsigned short waittime, bool waitForStackResponse)
 354 {
 355     OCStackResult res = OC_STACK_OK;
 356 #if defined(HAVE_GETSYSTEMTIMEASFILETIME)
 357     FILETIME startTime = {0};
 358     FILETIME currTime = {0};
 359
 360     GetSystemTimeAsFileTime(&startTime);
 361 #elif defined(HAVE_CLOCK_GETTIME)
 362     struct timespec startTime = {.tv_sec=0, .tv_nsec=0};
 363     struct timespec currTime  = {.tv_sec=0, .tv_nsec=0};
 364
 365 # if defined(_POSIX_MONOTONIC_CLOCK)
 366     int clock_res = clock_gettime(CLOCK_MONOTONIC, &startTime);
 367 # else
 368     int clock_res = clock_gettime(CLOCK_REALTIME, &startTime);
 369 # endif // defined(_POSIX_MONOTONIC_CLOCK)
 370     if (0 != clock_res)
 371     {
 372         return OC_STACK_ERROR;
 373     }
 374
 375 #else
 376     ERROR Need PMTimeout implementation
 377     return OC_STACK_ERROR;
 378 #endif
 379
 380     while (OC_STACK_OK == res)
 381     {
 382 #if defined(HAVE_GETSYSTEMTIMEASFILETIME)
 383         GetSystemTimeAsFileTime(&currTime);
 384 #elif defined(HAVE_CLOCK_GETTIME)
 385
 386 # if defined(_POSIX_MONOTONIC_CLOCK)
 387         clock_res = clock_gettime(CLOCK_MONOTONIC, &currTime);
 388 # else
 389         clock_res = clock_gettime(CLOCK_REALTIME, &currTime);
 390 # endif
 391         if (0 != clock_res)
 392         {
 393             return OC_STACK_TIMEOUT;
 394         }
 395 #else
 396         ERROR Need PMTimeout implementation
 397 #endif
 398
 399 #if defined(HAVE_GETSYSTEMTIMEASFILETIME)
 400 #define HNS_TO_S(VAL)  ((VAL)/(10*1000*1000))
 401         ULARGE_INTEGER currTimeInt;
 402         ULARGE_INTEGER startTimeInt;
 403
 404         currTimeInt.LowPart  = currTime.dwLowDateTime;
 405         currTimeInt.HighPart = currTime.dwHighDateTime;
 406
 407         startTimeInt.LowPart  = startTime.dwLowDateTime;
 408         startTimeInt.HighPart = startTime.dwHighDateTime;
 409
 410         long elapsed = (long)HNS_TO_S(currTimeInt.QuadPart - startTimeInt.QuadPart);
 411 #elif defined(HAVE_CLOCK_GETTIME)
 412         long elapsed = (currTime.tv_sec - startTime.tv_sec);
 413 #else
 414         ERROR Need PMTimeout implementation
 415 #endif
 416         if (elapsed > waittime)
 417         {
 418             return OC_STACK_OK;
 419         }
 420         if (waitForStackResponse)
 421         {
 422             res = OCProcess();
 423         }
 424     }
 425     return res;
 426 }
 427
 428 /**
 429  * Extract secure port information from payload of discovery response.
 430  *
 431  * @param[in] jsonStr response payload of /oic/res discovery.
 432  *
 433  * @return Secure port
 434  */
 435 uint16_t GetSecurePortFromJSON(char* jsonStr)
 436 {
 437     // TODO: Modify error handling
 438     if (NULL == jsonStr)
 439     {
 440         return 0;
 441     }
 442     cJSON *jsonProp = NULL;
 443     cJSON *jsonP = NULL;
 444     cJSON *jsonPort = NULL;
 445
 446     cJSON *jsonRoot = cJSON_Parse(jsonStr);
 447     if(!jsonRoot)
 448     {
 449         // TODO: Add error log & return default secure port
 450         return 0;
 451     }
 452
 453     jsonProp = cJSON_GetObjectItem(jsonRoot, "prop");
 454     if(!jsonProp)
 455     {
 456         // TODO: Add error log & return default secure port
 457         return 0;
 458     }
 459
 460     jsonP = cJSON_GetObjectItem(jsonProp, "p");
 461     if(!jsonP)
 462     {
 463         // TODO: Add error log & return default secure port
 464         return 0;
 465     }
 466
 467     jsonPort = cJSON_GetObjectItem(jsonP, "port");
 468     if(!jsonPort)
 469     {
 470         // TODO: Add error log & return default secure port
 471         return 0;
 472     }
 473
 474     return (uint16_t)jsonPort->valueint;
 475 }
 476
 477 bool PMGenerateQuery(bool isSecure,
 478                      const char* address, uint16_t port,
 479                      OCConnectivityType connType,
 480                      char* buffer, size_t bufferSize, const char* uri)
 481 {
 482     if(!address || !buffer || !uri)
 483     {
 484         OIC_LOG(ERROR, TAG, "PMGenerateQuery : Invalid parameters.");
 485         return false;
 486     }
 487
 488     int snRet = 0;
 489     char* prefix = (isSecure == true) ? COAPS_PREFIX : COAP_PREFIX;
 490
 491     switch(connType & CT_MASK_ADAPTER)
 492     {
 493         case CT_ADAPTER_IP:
 494             switch(connType & CT_MASK_FLAGS & ~CT_FLAG_SECURE)
 495             {
 496                 case CT_IP_USE_V4:
 497                         snRet = snprintf(buffer, bufferSize, "%s%s:%d%s",
 498                                          prefix, address, port, uri);
 499                     break;
 500                 case CT_IP_USE_V6:
 501                         snRet = snprintf(buffer, bufferSize, "%s[%s]:%d%s",
 502                                          prefix, address, port, uri);
 503                     break;
 504                 default:
 505                     OIC_LOG(ERROR, TAG, "Unknown address format.");
 506                     return false;
 507             }
 508             // snprintf return value check
 509             if (snRet < 0)
 510             {
 511                 OIC_LOG_V(ERROR, TAG, "PMGenerateQuery : Error (snprintf) %d\n", snRet);
 512                 return false;
 513             }
 514             else if ((size_t)snRet >= bufferSize)
 515             {
 516                 OIC_LOG_V(ERROR, TAG, "PMGenerateQuery : Truncated (snprintf) %d\n", snRet);
 517                 return false;
 518             }
 519
 520             break;
 521         // TODO: We need to verify tinyDTLS in below cases
 522         case CT_ADAPTER_GATT_BTLE:
 523         case CT_ADAPTER_RFCOMM_BTEDR:
 524             OIC_LOG(ERROR, TAG, "Not supported connectivity adapter.");
 525             return false;
 526             break;
 527         default:
 528             OIC_LOG(ERROR, TAG, "Unknown connectivity adapter.");
 529             return false;
 530     }
 531
 532     return true;
 533 }
 534
 535 static OCStackApplicationResult SecurityVersionDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 536                                 OCClientResponse *clientResponse)
 537 {
 538     if (ctx == NULL)
 539     {
 540         OIC_LOG(ERROR, TAG, "Lost List of device information");
 541         return OC_STACK_KEEP_TRANSACTION;
 542     }
 543     (void)UNUSED;
 544     if (clientResponse)
 545     {
 546         if  (NULL == clientResponse->payload)
 547         {
 548             OIC_LOG(INFO, TAG, "Skiping Null payload");
 549             return OC_STACK_KEEP_TRANSACTION;
 550         }
 551         if (OC_STACK_OK != clientResponse->result)
 552         {
 553             OIC_LOG(INFO, TAG, "Error in response");
 554             return OC_STACK_KEEP_TRANSACTION;
 555         }
 556         else
 557         {
 558             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
 559             {
 560                 OIC_LOG(INFO, TAG, "Unknown payload type");
 561                 return OC_STACK_KEEP_TRANSACTION;
 562             }
 563
 564             OicSecVer_t *ptrVer = NULL;
 565             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
 566             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
 567
 568             OCStackResult res = CBORPayloadToVer(payload, size, &ptrVer);
 569             if ((NULL == ptrVer) && (OC_STACK_OK != res))
 570             {
 571                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
 572                 return OC_STACK_KEEP_TRANSACTION;
 573             }
 574             else
 575             {
 576                 OIC_LOG(DEBUG, TAG, "Successfully converted ver cbor to bin.");
 577
 578                 //If this is owend device discovery we have to filter out the responses.
 579                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 580                 res = UpdateSecVersionOfDevice(pDInfo->ppDevicesList, clientResponse->devAddr.addr,
 581                                                          clientResponse->devAddr.port, ptrVer->secv);
 582                 if (OC_STACK_OK != res)
 583                 {
 584                     OIC_LOG(ERROR, TAG, "Error while getting security version.");
 585                     DeleteVerBinData(ptrVer);
 586                     return OC_STACK_KEEP_TRANSACTION;
 587                 }
 588
 589                 OIC_LOG(INFO, TAG, "= Discovered security version =");
 590                 OIC_LOG_V(DEBUG, TAG, "IP %s", clientResponse->devAddr.addr);
 591                 OIC_LOG_V(DEBUG, TAG, "PORT %d", clientResponse->devAddr.port);
 592                 OIC_LOG_V(DEBUG, TAG, "VERSION %s", ptrVer->secv);
 593
 594                 OIC_LOG(INFO, TAG, "Exiting SecVersionDiscoveryHandler.");
 595                 DeleteVerBinData(ptrVer);
 596             }
 597         }
 598     }
 599     else
 600     {
 601         OIC_LOG(INFO, TAG, "Skiping Null response");
 602         return OC_STACK_KEEP_TRANSACTION;
 603     }
 604
 605     return  OC_STACK_DELETE_TRANSACTION;
 606 }
 607
 608 static OCStackApplicationResult SecurePortDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 609                                  OCClientResponse *clientResponse)
 610 {
 611     if (ctx == NULL)
 612     {
 613         OIC_LOG(ERROR, TAG, "Lost List of device information");
 614         return OC_STACK_DELETE_TRANSACTION;
 615     }
 616     (void)UNUSED;
 617     if (clientResponse)
 618     {
 619         if  (NULL == clientResponse->payload)
 620         {
 621             OIC_LOG(INFO, TAG, "Skiping Null payload");
 622         }
 623         else
 624         {
 625             if (PAYLOAD_TYPE_DISCOVERY != clientResponse->payload->type)
 626             {
 627                 OIC_LOG(INFO, TAG, "Wrong payload type");
 628                 return OC_STACK_DELETE_TRANSACTION;
 629             }
 630
 631             uint16_t securePort = 0;
 632             OCResourcePayload* resPayload = ((OCDiscoveryPayload*)clientResponse->payload)->resources;
 633
 634             if (resPayload && resPayload->secure)
 635             {
 636                 securePort = resPayload->port;
 637             }
 638             else
 639             {
 640                 OIC_LOG(INFO, TAG, "Can not find secure port information.");
 641                 return OC_STACK_DELETE_TRANSACTION;
 642             }
 643
 644             DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 645             OCStackResult res = UpdateSecurePortOfDevice(pDInfo->ppDevicesList,
 646                                                          clientResponse->devAddr.addr,
 647                                                          clientResponse->devAddr.port, securePort);
 648             if (OC_STACK_OK != res)
 649             {
 650                 OIC_LOG(ERROR, TAG, "Error while getting secure port.");
 651                 return OC_STACK_DELETE_TRANSACTION;
 652             }
 653
 654             res = SecurityVersionDiscovery(pDInfo, clientResponse);
 655             if(OC_STACK_OK != res)
 656             {
 657                 OIC_LOG(ERROR, TAG, "Failed to SecurityVersionDiscovery");
 658                 return OC_STACK_DELETE_TRANSACTION;
 659             }
 660
 661             OIC_LOG(INFO, TAG, "Exiting SecurePortDiscoveryHandler.");
 662         }
 663
 664         return  OC_STACK_DELETE_TRANSACTION;
 665     }
 666     else
 667     {
 668         OIC_LOG(INFO, TAG, "Skiping Null response");
 669     }
 670
 671     return  OC_STACK_DELETE_TRANSACTION;
 672 }
 673
 674 static OCStackApplicationResult DeviceDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 675                                 OCClientResponse *clientResponse)
 676 {
 677     if (ctx == NULL)
 678     {
 679         OIC_LOG(ERROR, TAG, "Lost List of device information");
 680         return OC_STACK_KEEP_TRANSACTION;
 681     }
 682     (void)UNUSED;
 683     if (clientResponse)
 684     {
 685         if  (NULL == clientResponse->payload)
 686         {
 687             OIC_LOG(INFO, TAG, "Skiping Null payload");
 688             return OC_STACK_KEEP_TRANSACTION;
 689         }
 690         if (OC_STACK_OK != clientResponse->result)
 691         {
 692             OIC_LOG(INFO, TAG, "Error in response");
 693             return OC_STACK_KEEP_TRANSACTION;
 694         }
 695         else
 696         {
 697             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
 698             {
 699                 OIC_LOG(INFO, TAG, "Unknown payload type");
 700                 return OC_STACK_KEEP_TRANSACTION;
 701             }
 702
 703             OicSecDoxm_t *ptrDoxm = NULL;
 704             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
 705             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
 706
 707             OCStackResult res = CBORPayloadToDoxm(payload, size, &ptrDoxm);
 708             if ((NULL == ptrDoxm) || (OC_STACK_OK != res))
 709             {
 710                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
 711                 return OC_STACK_KEEP_TRANSACTION;
 712             }
 713             else
 714             {
 715                 OIC_LOG(DEBUG, TAG, "Successfully converted doxm cbor to bin.");
 716
 717                 //If this is owend device discovery we have to filter out the responses.
 718                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 719                 OCProvisionDev_t **ppDevicesList = pDInfo->ppDevicesList;
 720
 721                 // Get my device ID from doxm resource
 722                 OicUuid_t myId;
 723                 memset(&myId, 0, sizeof(myId));
 724                 OCStackResult res = GetDoxmDevOwnerId(&myId);
 725                 if(OC_STACK_OK != res)
 726                 {
 727                     OIC_LOG(ERROR, TAG, "Error while getting my device ID.");
 728                     DeleteDoxmBinData(ptrDoxm);
 729                     return OC_STACK_KEEP_TRANSACTION;
 730                 }
 731
 732                 // If this is owned discovery response but owner is not me then discard it.
 733                 if( (pDInfo->isOwnedDiscovery) &&
 734                     (0 != memcmp(&ptrDoxm->owner.id, &myId.id, sizeof(myId.id))) )
 735                 {
 736                     OIC_LOG(DEBUG, TAG, "Discovered device is not owend by me");
 737                     DeleteDoxmBinData(ptrDoxm);
 738                     return OC_STACK_KEEP_TRANSACTION;
 739                 }
 740
 741                 res = AddDevice(ppDevicesList, clientResponse->devAddr.addr,
 742                         clientResponse->devAddr.port,
 743                         clientResponse->devAddr.adapter,
 744                         clientResponse->connType, ptrDoxm);
 745                 if (OC_STACK_OK != res)
 746                 {
 747                     OIC_LOG(ERROR, TAG, "Error while adding data to linkedlist.");
 748                     DeleteDoxmBinData(ptrDoxm);
 749                     return OC_STACK_KEEP_TRANSACTION;
 750                 }
 751
 752                 res = SecurePortDiscovery(pDInfo, clientResponse);
 753                 if(OC_STACK_OK != res)
 754                 {
 755                     OIC_LOG(ERROR, TAG, "Failed to SecurePortDiscovery");
 756                     DeleteDoxmBinData(ptrDoxm);
 757                     return OC_STACK_KEEP_TRANSACTION;
 758                 }
 759
 760                 OIC_LOG(INFO, TAG, "Exiting ProvisionDiscoveryHandler.");
 761             }
 762
 763             return  OC_STACK_KEEP_TRANSACTION;
 764         }
 765     }
 766     else
 767     {
 768         OIC_LOG(INFO, TAG, "Skiping Null response");
 769         return OC_STACK_KEEP_TRANSACTION;
 770     }
 771
 772     return  OC_STACK_DELETE_TRANSACTION;
 773 }
 774
 775 /**
 776  * Discover owned/unowned devices in the same IP subnet. .
 777  *
 778  * @param[in] waittime      Timeout in seconds.
 779  * @param[in] isOwned       bool flag for owned / unowned discovery
 780  * @param[in] ppDevicesList        List of OCProvisionDev_t.
 781  *
 782  * @return OC_STACK_OK on success otherwise error.
 783  */
 784 OCStackResult PMDeviceDiscovery(unsigned short waittime, bool isOwned, OCProvisionDev_t **ppDevicesList)
 785 {
 786     OIC_LOG(DEBUG, TAG, "IN PMDeviceDiscovery");
 787
 788     if (NULL != *ppDevicesList)
 789     {
 790         OIC_LOG(ERROR, TAG, "List is not null can cause memory leak");
 791         return OC_STACK_INVALID_PARAM;
 792     }
 793
 794     const char DOXM_OWNED_FALSE_MULTICAST_QUERY[] = "/oic/sec/doxm?Owned=FALSE";
 795     const char DOXM_OWNED_TRUE_MULTICAST_QUERY[] = "/oic/sec/doxm?Owned=TRUE";
 796
 797     DiscoveryInfo *pDInfo = OICCalloc(1, sizeof(DiscoveryInfo));
 798     if(NULL == pDInfo)
 799     {
 800         OIC_LOG(ERROR, TAG, "PMDeviceDiscovery : Memory allocation failed.");
 801         return OC_STACK_NO_MEMORY;
 802     }
 803
 804     pDInfo->ppDevicesList = ppDevicesList;
 805     pDInfo->isOwnedDiscovery = isOwned;
 806
 807     OCCallbackData cbData;
 808     cbData.cb = &DeviceDiscoveryHandler;
 809     cbData.context = (void *)pDInfo;
 810     cbData.cd = NULL;
 811     OCStackResult res = OC_STACK_ERROR;
 812
 813     const char* query = isOwned ? DOXM_OWNED_TRUE_MULTICAST_QUERY :
 814                                   DOXM_OWNED_FALSE_MULTICAST_QUERY;
 815
 816     OCDoHandle handle = NULL;
 817     res = OCDoResource(&handle, OC_REST_DISCOVER, query, 0, 0,
 818                                      CT_DEFAULT, OC_HIGH_QOS, &cbData, NULL, 0);
 819     if (res != OC_STACK_OK)
 820     {
 821         OIC_LOG(ERROR, TAG, "OCStack resource error");
 822         OICFree(pDInfo);
 823         return res;
 824     }
 825
 826     //Waiting for each response.
 827     res = PMTimeout(waittime, true);
 828     if(OC_STACK_OK != res)
 829     {
 830         OIC_LOG(ERROR, TAG, "Failed to wait response for secure discovery.");
 831         OICFree(pDInfo);
 832         OCStackResult resCancel = OCCancel(handle, OC_HIGH_QOS, NULL, 0);
 833         if(OC_STACK_OK !=  resCancel)
 834         {
 835             OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 836         }
 837         return res;
 838     }
 839     res = OCCancel(handle,OC_HIGH_QOS,NULL,0);
 840     if (OC_STACK_OK != res)
 841     {
 842         OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 843         OICFree(pDInfo);
 844         return res;
 845     }
 846     OIC_LOG(DEBUG, TAG, "OUT PMDeviceDiscovery");
 847     OICFree(pDInfo);
 848     return res;
 849 }
 850
 851 static OCStackResult SecurePortDiscovery(DiscoveryInfo* discoveryInfo,
 852                                          const OCClientResponse *clientResponse)
 853 {
 854     OIC_LOG(DEBUG, TAG, "IN SecurePortDiscovery");
 855
 856     if(NULL == discoveryInfo || NULL == clientResponse)
 857     {
 858         return OC_STACK_INVALID_PARAM;
 859     }
 860
 861     char rsrc_uri[MAX_URI_LENGTH+1] = {0};
 862     int wr_len = snprintf(rsrc_uri, sizeof(rsrc_uri), "%s?%s=%s",
 863               OC_RSRVD_WELL_KNOWN_URI, OC_RSRVD_RESOURCE_TYPE, OIC_RSRC_TYPE_SEC_DOXM);
 864     if(wr_len <= 0 || (size_t)wr_len >= sizeof(rsrc_uri))
 865     {
 866         OIC_LOG(ERROR, TAG, "rsrc_uri_string_print failed");
 867         return OC_STACK_ERROR;
 868     }
 869     //Try to the unicast discovery to getting secure port
 870     char query[MAX_URI_LENGTH+MAX_QUERY_LENGTH+1] = {0};
 871     if(!PMGenerateQuery(false,
 872                         clientResponse->devAddr.addr, clientResponse->devAddr.port,
 873                         clientResponse->connType,
 874                         query, sizeof(query), rsrc_uri))
 875     {
 876         OIC_LOG(ERROR, TAG, "SecurePortDiscovery : Failed to generate query");
 877         return OC_STACK_ERROR;
 878     }
 879     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
 880
 881     OCCallbackData cbData;
 882     cbData.cb = &SecurePortDiscoveryHandler;
 883     cbData.context = (void*)discoveryInfo;
 884     cbData.cd = NULL;
 885     OCStackResult ret = OCDoResource(NULL, OC_REST_DISCOVER, query, 0, 0,
 886             clientResponse->connType, OC_HIGH_QOS, &cbData, NULL, 0);
 887     if(OC_STACK_OK != ret)
 888     {
 889         OIC_LOG(ERROR, TAG, "Failed to Secure Port Discovery");
 890         return ret;
 891     }
 892     else
 893     {
 894         OIC_LOG_V(INFO, TAG, "OCDoResource with [%s] Success", query);
 895     }
 896
 897     OIC_LOG(DEBUG, TAG, "OUT SecurePortDiscovery");
 898
 899     return ret;
 900 }
 901
 902 static OCStackResult SecurityVersionDiscovery(DiscoveryInfo* discoveryInfo,
 903                                               const OCClientResponse *clientResponse)
 904 {
 905     OIC_LOG(DEBUG, TAG, "IN SecurityVersionDiscovery");
 906
 907     if(NULL == discoveryInfo || NULL == clientResponse)
 908     {
 909         return OC_STACK_INVALID_PARAM;
 910     }
 911
 912     //Try to the unicast discovery to getting security version
 913     char query[MAX_URI_LENGTH+MAX_QUERY_LENGTH+1] = {0};
 914     if(!PMGenerateQuery(false,
 915                         clientResponse->devAddr.addr, clientResponse->devAddr.port,
 916                         clientResponse->connType,
 917                         query, sizeof(query), OIC_RSRC_VER_URI))
 918     {
 919         OIC_LOG(ERROR, TAG, "SecurityVersionDiscovery : Failed to generate query");
 920         return OC_STACK_ERROR;
 921     }
 922     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
 923
 924     OCCallbackData cbData;
 925     cbData.cb = &SecurityVersionDiscoveryHandler;
 926     cbData.context = (void*)discoveryInfo;
 927     cbData.cd = NULL;
 928     OCStackResult ret = OCDoResource(NULL, OC_REST_DISCOVER, query, 0, 0,
 929             clientResponse->connType, OC_HIGH_QOS, &cbData, NULL, 0);
 930     if(OC_STACK_OK != ret)
 931     {
 932         OIC_LOG(ERROR, TAG, "Failed to Security Version Discovery");
 933         return ret;
 934     }
 935     else
 936     {
 937         OIC_LOG_V(INFO, TAG, "OCDoResource with [%s] Success", query);
 938     }
 939
 940     OIC_LOG(DEBUG, TAG, "OUT SecurityVersionDiscovery");
 941
 942     return ret;
 943 }
 944
 945 /**
 946  * Function to print OCProvisionDev_t for debug purpose.
 947  *
 948  * @param[in] pDev Pointer to OCProvisionDev_t. It's information will be printed by OIC_LOG_XX
 949  *
 950  */
 951 void PMPrintOCProvisionDev(const OCProvisionDev_t* pDev)
 952 {
 953     if (pDev)
 954     {
 955         OIC_LOG(DEBUG, TAG, "+++++ OCProvisionDev_t Information +++++");
 956         OIC_LOG_V(DEBUG, TAG, "IP %s", pDev->endpoint.addr);
 957         OIC_LOG_V(DEBUG, TAG, "PORT %d", pDev->endpoint.port);
 958         OIC_LOG_V(DEBUG, TAG, "S-PORT %d", pDev->securePort);
 959         OIC_LOG(DEBUG, TAG, "++++++++++++++++++++++++++++++++++++++++");
 960     }
 961     else
 962     {
 963         OIC_LOG(DEBUG, TAG, "+++++ OCProvisionDev_t is NULL +++++");
 964     }
 965 }
 966
 967 bool PMDeleteFromUUIDList(OCUuidList_t *pUuidList, OicUuid_t *targetId)
 968 {
 969     if(pUuidList == NULL || targetId == NULL)
 970     {
 971         return false;
 972     }
 973     OCUuidList_t *tmp1 = NULL,*tmp2=NULL;
 974     LL_FOREACH_SAFE(pUuidList, tmp1, tmp2)
 975     {
 976         if(0 == memcmp(tmp1->dev.id, targetId->id, sizeof(targetId->id)))
 977         {
 978             LL_DELETE(pUuidList, tmp1);
 979             OICFree(tmp1);
 980             return true;
 981         }
 982     }
 983     return false;
 984 }