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     int clock_res = 1;
 360
 361     GetSystemTimeAsFileTime(&startTime);
 362 #elif defined(HAVE_CLOCK_GETTIME)
 363     struct timespec startTime = {.tv_sec=0, .tv_nsec=0};
 364     struct timespec currTime  = {.tv_sec=0, .tv_nsec=0};
 365
 366 # if defined(_POSIX_MONOTONIC_CLOCK)
 367     int clock_res = clock_gettime(CLOCK_MONOTONIC, &startTime);
 368 # else
 369     int clock_res = clock_gettime(CLOCK_REALTIME, &startTime);
 370 # endif // defined(_POSIX_MONOTONIC_CLOCK)
 371
 372 #else
 373     ERROR Need PMTimeout implementation
 374     return OC_STACK_ERROR;
 375 #endif
 376
 377     if (0 != clock_res)
 378     {
 379         return OC_STACK_ERROR;
 380     }
 381     while (OC_STACK_OK == res)
 382     {
 383 #if defined(HAVE_GETSYSTEMTIMEASFILETIME)
 384         GetSystemTimeAsFileTime(&currTime);
 385 #elif defined(HAVE_CLOCK_GETTIME)
 386
 387 # if defined(_POSIX_MONOTONIC_CLOCK)
 388         clock_res = clock_gettime(CLOCK_MONOTONIC, &currTime);
 389 # else
 390         clock_res = clock_gettime(CLOCK_REALTIME, &currTime);
 391 # endif
 392         if (0 != clock_res)
 393         {
 394             return OC_STACK_TIMEOUT;
 395         }
 396 #else
 397         ERROR Need PMTimeout implementation
 398 #endif
 399
 400 #if defined(HAVE_GETSYSTEMTIMEASFILETIME)
 401 #define HNS_TO_S(VAL)  ((VAL)/(10*1000*1000))
 402         ULARGE_INTEGER currTimeInt;
 403         ULARGE_INTEGER startTimeInt;
 404
 405         currTimeInt.LowPart  = currTime.dwLowDateTime;
 406         currTimeInt.HighPart = currTime.dwHighDateTime;
 407
 408         startTimeInt.LowPart  = startTime.dwLowDateTime;
 409         startTimeInt.HighPart = startTime.dwHighDateTime;
 410
 411         long elapsed = (long)HNS_TO_S(currTimeInt.QuadPart - startTimeInt.QuadPart);
 412 #elif defined(HAVE_CLOCK_GETTIME)
 413         long elapsed = (currTime.tv_sec - startTime.tv_sec);
 414 #else
 415         ERROR Need PMTimeout implementation
 416 #endif
 417         if (elapsed > waittime)
 418         {
 419             return OC_STACK_OK;
 420         }
 421         if (waitForStackResponse)
 422         {
 423             res = OCProcess();
 424         }
 425     }
 426     return res;
 427 }
 428
 429 /**
 430  * Extract secure port information from payload of discovery response.
 431  *
 432  * @param[in] jsonStr response payload of /oic/res discovery.
 433  *
 434  * @return Secure port
 435  */
 436 uint16_t GetSecurePortFromJSON(char* jsonStr)
 437 {
 438     // TODO: Modify error handling
 439     if (NULL == jsonStr)
 440     {
 441         return 0;
 442     }
 443     cJSON *jsonProp = NULL;
 444     cJSON *jsonP = NULL;
 445     cJSON *jsonPort = NULL;
 446
 447     cJSON *jsonRoot = cJSON_Parse(jsonStr);
 448     if(!jsonRoot)
 449     {
 450         // TODO: Add error log & return default secure port
 451         return 0;
 452     }
 453
 454     jsonProp = cJSON_GetObjectItem(jsonRoot, "prop");
 455     if(!jsonProp)
 456     {
 457         // TODO: Add error log & return default secure port
 458         return 0;
 459     }
 460
 461     jsonP = cJSON_GetObjectItem(jsonProp, "p");
 462     if(!jsonP)
 463     {
 464         // TODO: Add error log & return default secure port
 465         return 0;
 466     }
 467
 468     jsonPort = cJSON_GetObjectItem(jsonP, "port");
 469     if(!jsonPort)
 470     {
 471         // TODO: Add error log & return default secure port
 472         return 0;
 473     }
 474
 475     return (uint16_t)jsonPort->valueint;
 476 }
 477
 478 bool PMGenerateQuery(bool isSecure,
 479                      const char* address, uint16_t port,
 480                      OCConnectivityType connType,
 481                      char* buffer, size_t bufferSize, const char* uri)
 482 {
 483     if(!address || !buffer || !uri)
 484     {
 485         OIC_LOG(ERROR, TAG, "PMGenerateQuery : Invalid parameters.");
 486         return false;
 487     }
 488
 489     int snRet = 0;
 490     char* prefix = (isSecure == true) ? COAPS_PREFIX : COAP_PREFIX;
 491
 492     switch(connType & CT_MASK_ADAPTER)
 493     {
 494         case CT_ADAPTER_IP:
 495             switch(connType & CT_MASK_FLAGS & ~CT_FLAG_SECURE)
 496             {
 497                 case CT_IP_USE_V4:
 498                         snRet = snprintf(buffer, bufferSize, "%s%s:%d%s",
 499                                          prefix, address, port, uri);
 500                     break;
 501                 case CT_IP_USE_V6:
 502                         snRet = snprintf(buffer, bufferSize, "%s[%s]:%d%s",
 503                                          prefix, address, port, uri);
 504                     break;
 505                 default:
 506                     OIC_LOG(ERROR, TAG, "Unknown address format.");
 507                     return false;
 508             }
 509             // snprintf return value check
 510             if (snRet < 0)
 511             {
 512                 OIC_LOG_V(ERROR, TAG, "PMGenerateQuery : Error (snprintf) %d\n", snRet);
 513                 return false;
 514             }
 515             else if ((size_t)snRet >= bufferSize)
 516             {
 517                 OIC_LOG_V(ERROR, TAG, "PMGenerateQuery : Truncated (snprintf) %d\n", snRet);
 518                 return false;
 519             }
 520
 521             break;
 522         // TODO: We need to verify tinyDTLS in below cases
 523         case CT_ADAPTER_GATT_BTLE:
 524         case CT_ADAPTER_RFCOMM_BTEDR:
 525             OIC_LOG(ERROR, TAG, "Not supported connectivity adapter.");
 526             return false;
 527             break;
 528         default:
 529             OIC_LOG(ERROR, TAG, "Unknown connectivity adapter.");
 530             return false;
 531     }
 532
 533     return true;
 534 }
 535
 536 static OCStackApplicationResult SecurityVersionDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 537                                 OCClientResponse *clientResponse)
 538 {
 539     if (ctx == NULL)
 540     {
 541         OIC_LOG(ERROR, TAG, "Lost List of device information");
 542         return OC_STACK_KEEP_TRANSACTION;
 543     }
 544     (void)UNUSED;
 545     if (clientResponse)
 546     {
 547         if  (NULL == clientResponse->payload)
 548         {
 549             OIC_LOG(INFO, TAG, "Skiping Null payload");
 550             return OC_STACK_KEEP_TRANSACTION;
 551         }
 552         if (OC_STACK_OK != clientResponse->result)
 553         {
 554             OIC_LOG(INFO, TAG, "Error in response");
 555             return OC_STACK_KEEP_TRANSACTION;
 556         }
 557         else
 558         {
 559             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
 560             {
 561                 OIC_LOG(INFO, TAG, "Unknown payload type");
 562                 return OC_STACK_KEEP_TRANSACTION;
 563             }
 564
 565             OicSecVer_t *ptrVer = NULL;
 566             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
 567             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
 568
 569             OCStackResult res = CBORPayloadToVer(payload, size, &ptrVer);
 570             if ((NULL == ptrVer) && (OC_STACK_OK != res))
 571             {
 572                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
 573                 return OC_STACK_KEEP_TRANSACTION;
 574             }
 575             else
 576             {
 577                 OIC_LOG(DEBUG, TAG, "Successfully converted ver cbor to bin.");
 578
 579                 //If this is owend device discovery we have to filter out the responses.
 580                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 581                 res = UpdateSecVersionOfDevice(pDInfo->ppDevicesList, clientResponse->devAddr.addr,
 582                                                          clientResponse->devAddr.port, ptrVer->secv);
 583                 if (OC_STACK_OK != res)
 584                 {
 585                     OIC_LOG(ERROR, TAG, "Error while getting security version.");
 586                     DeleteVerBinData(ptrVer);
 587                     return OC_STACK_KEEP_TRANSACTION;
 588                 }
 589
 590                 OIC_LOG(INFO, TAG, "= Discovered security version =");
 591                 OIC_LOG_V(DEBUG, TAG, "IP %s", clientResponse->devAddr.addr);
 592                 OIC_LOG_V(DEBUG, TAG, "PORT %d", clientResponse->devAddr.port);
 593                 OIC_LOG_V(DEBUG, TAG, "VERSION %s", ptrVer->secv);
 594
 595                 OIC_LOG(INFO, TAG, "Exiting SecVersionDiscoveryHandler.");
 596                 DeleteVerBinData(ptrVer);
 597             }
 598         }
 599     }
 600     else
 601     {
 602         OIC_LOG(INFO, TAG, "Skiping Null response");
 603         return OC_STACK_KEEP_TRANSACTION;
 604     }
 605
 606     return  OC_STACK_DELETE_TRANSACTION;
 607 }
 608
 609 static OCStackApplicationResult SecurePortDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 610                                  OCClientResponse *clientResponse)
 611 {
 612     if (ctx == NULL)
 613     {
 614         OIC_LOG(ERROR, TAG, "Lost List of device information");
 615         return OC_STACK_DELETE_TRANSACTION;
 616     }
 617     (void)UNUSED;
 618     if (clientResponse)
 619     {
 620         if  (NULL == clientResponse->payload)
 621         {
 622             OIC_LOG(INFO, TAG, "Skiping Null payload");
 623         }
 624         else
 625         {
 626             if (PAYLOAD_TYPE_DISCOVERY != clientResponse->payload->type)
 627             {
 628                 OIC_LOG(INFO, TAG, "Wrong payload type");
 629                 return OC_STACK_DELETE_TRANSACTION;
 630             }
 631
 632             uint16_t securePort = 0;
 633             OCResourcePayload* resPayload = ((OCDiscoveryPayload*)clientResponse->payload)->resources;
 634
 635             if (resPayload && resPayload->secure)
 636             {
 637                 securePort = resPayload->port;
 638             }
 639             else
 640             {
 641                 OIC_LOG(INFO, TAG, "Can not find secure port information.");
 642                 return OC_STACK_DELETE_TRANSACTION;
 643             }
 644
 645             DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 646             OCStackResult res = UpdateSecurePortOfDevice(pDInfo->ppDevicesList,
 647                                                          clientResponse->devAddr.addr,
 648                                                          clientResponse->devAddr.port, securePort);
 649             if (OC_STACK_OK != res)
 650             {
 651                 OIC_LOG(ERROR, TAG, "Error while getting secure port.");
 652                 return OC_STACK_DELETE_TRANSACTION;
 653             }
 654
 655             res = SecurityVersionDiscovery(pDInfo, clientResponse);
 656             if(OC_STACK_OK != res)
 657             {
 658                 OIC_LOG(ERROR, TAG, "Failed to SecurityVersionDiscovery");
 659                 return OC_STACK_DELETE_TRANSACTION;
 660             }
 661
 662             OIC_LOG(INFO, TAG, "Exiting SecurePortDiscoveryHandler.");
 663         }
 664
 665         return  OC_STACK_DELETE_TRANSACTION;
 666     }
 667     else
 668     {
 669         OIC_LOG(INFO, TAG, "Skiping Null response");
 670     }
 671
 672     return  OC_STACK_DELETE_TRANSACTION;
 673 }
 674
 675 static OCStackApplicationResult DeviceDiscoveryHandler(void *ctx, OCDoHandle UNUSED,
 676                                 OCClientResponse *clientResponse)
 677 {
 678     if (ctx == NULL)
 679     {
 680         OIC_LOG(ERROR, TAG, "Lost List of device information");
 681         return OC_STACK_KEEP_TRANSACTION;
 682     }
 683     (void)UNUSED;
 684     if (clientResponse)
 685     {
 686         if  (NULL == clientResponse->payload)
 687         {
 688             OIC_LOG(INFO, TAG, "Skiping Null payload");
 689             return OC_STACK_KEEP_TRANSACTION;
 690         }
 691         if (OC_STACK_OK != clientResponse->result)
 692         {
 693             OIC_LOG(INFO, TAG, "Error in response");
 694             return OC_STACK_KEEP_TRANSACTION;
 695         }
 696         else
 697         {
 698             if (PAYLOAD_TYPE_SECURITY != clientResponse->payload->type)
 699             {
 700                 OIC_LOG(INFO, TAG, "Unknown payload type");
 701                 return OC_STACK_KEEP_TRANSACTION;
 702             }
 703
 704             OicSecDoxm_t *ptrDoxm = NULL;
 705             uint8_t *payload = ((OCSecurityPayload*)clientResponse->payload)->securityData;
 706             size_t size = ((OCSecurityPayload*)clientResponse->payload)->payloadSize;
 707
 708             OCStackResult res = CBORPayloadToDoxm(payload, size, &ptrDoxm);
 709             if ((NULL == ptrDoxm) || (OC_STACK_OK != res))
 710             {
 711                 OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");
 712                 return OC_STACK_KEEP_TRANSACTION;
 713             }
 714             else
 715             {
 716                 OIC_LOG(DEBUG, TAG, "Successfully converted doxm cbor to bin.");
 717
 718                 //If this is owend device discovery we have to filter out the responses.
 719                 DiscoveryInfo* pDInfo = (DiscoveryInfo*)ctx;
 720                 OCProvisionDev_t **ppDevicesList = pDInfo->ppDevicesList;
 721
 722                 // Get my device ID from doxm resource
 723                 OicUuid_t myId;
 724                 memset(&myId, 0, sizeof(myId));
 725                 OCStackResult res = GetDoxmDevOwnerId(&myId);
 726                 if(OC_STACK_OK != res)
 727                 {
 728                     OIC_LOG(ERROR, TAG, "Error while getting my device ID.");
 729                     DeleteDoxmBinData(ptrDoxm);
 730                     return OC_STACK_KEEP_TRANSACTION;
 731                 }
 732
 733                 // If this is owned discovery response but owner is not me then discard it.
 734                 if( (pDInfo->isOwnedDiscovery) &&
 735                     (0 != memcmp(&ptrDoxm->owner.id, &myId.id, sizeof(myId.id))) )
 736                 {
 737                     OIC_LOG(DEBUG, TAG, "Discovered device is not owend by me");
 738                     DeleteDoxmBinData(ptrDoxm);
 739                     return OC_STACK_KEEP_TRANSACTION;
 740                 }
 741
 742                 res = AddDevice(ppDevicesList, clientResponse->devAddr.addr,
 743                         clientResponse->devAddr.port,
 744                         clientResponse->devAddr.adapter,
 745                         clientResponse->connType, ptrDoxm);
 746                 if (OC_STACK_OK != res)
 747                 {
 748                     OIC_LOG(ERROR, TAG, "Error while adding data to linkedlist.");
 749                     DeleteDoxmBinData(ptrDoxm);
 750                     return OC_STACK_KEEP_TRANSACTION;
 751                 }
 752
 753                 res = SecurePortDiscovery(pDInfo, clientResponse);
 754                 if(OC_STACK_OK != res)
 755                 {
 756                     OIC_LOG(ERROR, TAG, "Failed to SecurePortDiscovery");
 757                     DeleteDoxmBinData(ptrDoxm);
 758                     return OC_STACK_KEEP_TRANSACTION;
 759                 }
 760
 761                 OIC_LOG(INFO, TAG, "Exiting ProvisionDiscoveryHandler.");
 762             }
 763
 764             return  OC_STACK_KEEP_TRANSACTION;
 765         }
 766     }
 767     else
 768     {
 769         OIC_LOG(INFO, TAG, "Skiping Null response");
 770         return OC_STACK_KEEP_TRANSACTION;
 771     }
 772
 773     return  OC_STACK_DELETE_TRANSACTION;
 774 }
 775
 776 /**
 777  * Discover owned/unowned devices in the same IP subnet. .
 778  *
 779  * @param[in] waittime      Timeout in seconds.
 780  * @param[in] isOwned       bool flag for owned / unowned discovery
 781  * @param[in] ppDevicesList        List of OCProvisionDev_t.
 782  *
 783  * @return OC_STACK_OK on success otherwise error.
 784  */
 785 OCStackResult PMDeviceDiscovery(unsigned short waittime, bool isOwned, OCProvisionDev_t **ppDevicesList)
 786 {
 787     OIC_LOG(DEBUG, TAG, "IN PMDeviceDiscovery");
 788
 789     if (NULL != *ppDevicesList)
 790     {
 791         OIC_LOG(ERROR, TAG, "List is not null can cause memory leak");
 792         return OC_STACK_INVALID_PARAM;
 793     }
 794
 795     const char DOXM_OWNED_FALSE_MULTICAST_QUERY[] = "/oic/sec/doxm?Owned=FALSE";
 796     const char DOXM_OWNED_TRUE_MULTICAST_QUERY[] = "/oic/sec/doxm?Owned=TRUE";
 797
 798     DiscoveryInfo *pDInfo = OICCalloc(1, sizeof(DiscoveryInfo));
 799     if(NULL == pDInfo)
 800     {
 801         OIC_LOG(ERROR, TAG, "PMDeviceDiscovery : Memory allocation failed.");
 802         return OC_STACK_NO_MEMORY;
 803     }
 804
 805     pDInfo->ppDevicesList = ppDevicesList;
 806     pDInfo->isOwnedDiscovery = isOwned;
 807
 808     OCCallbackData cbData;
 809     cbData.cb = &DeviceDiscoveryHandler;
 810     cbData.context = (void *)pDInfo;
 811     cbData.cd = NULL;
 812     OCStackResult res = OC_STACK_ERROR;
 813
 814     const char* query = isOwned ? DOXM_OWNED_TRUE_MULTICAST_QUERY :
 815                                   DOXM_OWNED_FALSE_MULTICAST_QUERY;
 816
 817     OCDoHandle handle = NULL;
 818     res = OCDoResource(&handle, OC_REST_DISCOVER, query, 0, 0,
 819                                      CT_DEFAULT, OC_HIGH_QOS, &cbData, NULL, 0);
 820     if (res != OC_STACK_OK)
 821     {
 822         OIC_LOG(ERROR, TAG, "OCStack resource error");
 823         OICFree(pDInfo);
 824         return res;
 825     }
 826
 827     //Waiting for each response.
 828     res = PMTimeout(waittime, true);
 829     if(OC_STACK_OK != res)
 830     {
 831         OIC_LOG(ERROR, TAG, "Failed to wait response for secure discovery.");
 832         OICFree(pDInfo);
 833         OCStackResult resCancel = OCCancel(handle, OC_HIGH_QOS, NULL, 0);
 834         if(OC_STACK_OK !=  resCancel)
 835         {
 836             OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 837         }
 838         return res;
 839     }
 840     res = OCCancel(handle,OC_HIGH_QOS,NULL,0);
 841     if (OC_STACK_OK != res)
 842     {
 843         OIC_LOG(ERROR, TAG, "Failed to remove registered callback");
 844         OICFree(pDInfo);
 845         return res;
 846     }
 847     OIC_LOG(DEBUG, TAG, "OUT PMDeviceDiscovery");
 848     OICFree(pDInfo);
 849     return res;
 850 }
 851
 852 static OCStackResult SecurePortDiscovery(DiscoveryInfo* discoveryInfo,
 853                                          const OCClientResponse *clientResponse)
 854 {
 855     OIC_LOG(DEBUG, TAG, "IN SecurePortDiscovery");
 856
 857     if(NULL == discoveryInfo || NULL == clientResponse)
 858     {
 859         return OC_STACK_INVALID_PARAM;
 860     }
 861
 862     char rsrc_uri[MAX_URI_LENGTH+1] = {0};
 863     int wr_len = snprintf(rsrc_uri, sizeof(rsrc_uri), "%s?%s=%s",
 864               OC_RSRVD_WELL_KNOWN_URI, OC_RSRVD_RESOURCE_TYPE, OIC_RSRC_TYPE_SEC_DOXM);
 865     if(wr_len <= 0 || (size_t)wr_len >= sizeof(rsrc_uri))
 866     {
 867         OIC_LOG(ERROR, TAG, "rsrc_uri_string_print failed");
 868         return OC_STACK_ERROR;
 869     }
 870     //Try to the unicast discovery to getting secure port
 871     char query[MAX_URI_LENGTH+MAX_QUERY_LENGTH+1] = {0};
 872     if(!PMGenerateQuery(false,
 873                         clientResponse->devAddr.addr, clientResponse->devAddr.port,
 874                         clientResponse->connType,
 875                         query, sizeof(query), rsrc_uri))
 876     {
 877         OIC_LOG(ERROR, TAG, "SecurePortDiscovery : Failed to generate query");
 878         return OC_STACK_ERROR;
 879     }
 880     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
 881
 882     OCCallbackData cbData;
 883     cbData.cb = &SecurePortDiscoveryHandler;
 884     cbData.context = (void*)discoveryInfo;
 885     cbData.cd = NULL;
 886     OCStackResult ret = OCDoResource(NULL, OC_REST_DISCOVER, query, 0, 0,
 887             clientResponse->connType, OC_HIGH_QOS, &cbData, NULL, 0);
 888     if(OC_STACK_OK != ret)
 889     {
 890         OIC_LOG(ERROR, TAG, "Failed to Secure Port Discovery");
 891         return ret;
 892     }
 893     else
 894     {
 895         OIC_LOG_V(INFO, TAG, "OCDoResource with [%s] Success", query);
 896     }
 897
 898     OIC_LOG(DEBUG, TAG, "OUT SecurePortDiscovery");
 899
 900     return ret;
 901 }
 902
 903 static OCStackResult SecurityVersionDiscovery(DiscoveryInfo* discoveryInfo,
 904                                               const OCClientResponse *clientResponse)
 905 {
 906     OIC_LOG(DEBUG, TAG, "IN SecurityVersionDiscovery");
 907
 908     if(NULL == discoveryInfo || NULL == clientResponse)
 909     {
 910         return OC_STACK_INVALID_PARAM;
 911     }
 912
 913     //Try to the unicast discovery to getting security version
 914     char query[MAX_URI_LENGTH+MAX_QUERY_LENGTH+1] = {0};
 915     if(!PMGenerateQuery(false,
 916                         clientResponse->devAddr.addr, clientResponse->devAddr.port,
 917                         clientResponse->connType,
 918                         query, sizeof(query), OIC_RSRC_VER_URI))
 919     {
 920         OIC_LOG(ERROR, TAG, "SecurityVersionDiscovery : Failed to generate query");
 921         return OC_STACK_ERROR;
 922     }
 923     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
 924
 925     OCCallbackData cbData;
 926     cbData.cb = &SecurityVersionDiscoveryHandler;
 927     cbData.context = (void*)discoveryInfo;
 928     cbData.cd = NULL;
 929     OCStackResult ret = OCDoResource(NULL, OC_REST_DISCOVER, query, 0, 0,
 930             clientResponse->connType, OC_HIGH_QOS, &cbData, NULL, 0);
 931     if(OC_STACK_OK != ret)
 932     {
 933         OIC_LOG(ERROR, TAG, "Failed to Security Version Discovery");
 934         return ret;
 935     }
 936     else
 937     {
 938         OIC_LOG_V(INFO, TAG, "OCDoResource with [%s] Success", query);
 939     }
 940
 941     OIC_LOG(DEBUG, TAG, "OUT SecurityVersionDiscovery");
 942
 943     return ret;
 944 }
 945
 946 /**
 947  * Function to print OCProvisionDev_t for debug purpose.
 948  *
 949  * @param[in] pDev Pointer to OCProvisionDev_t. It's information will be printed by OIC_LOG_XX
 950  *
 951  */
 952 void PMPrintOCProvisionDev(const OCProvisionDev_t* pDev)
 953 {
 954     if (pDev)
 955     {
 956         OIC_LOG(DEBUG, TAG, "+++++ OCProvisionDev_t Information +++++");
 957         OIC_LOG_V(DEBUG, TAG, "IP %s", pDev->endpoint.addr);
 958         OIC_LOG_V(DEBUG, TAG, "PORT %d", pDev->endpoint.port);
 959         OIC_LOG_V(DEBUG, TAG, "S-PORT %d", pDev->securePort);
 960         OIC_LOG(DEBUG, TAG, "++++++++++++++++++++++++++++++++++++++++");
 961     }
 962     else
 963     {
 964         OIC_LOG(DEBUG, TAG, "+++++ OCProvisionDev_t is NULL +++++");
 965     }
 966 }
 967
 968 bool PMDeleteFromUUIDList(OCUuidList_t *pUuidList, OicUuid_t *targetId)
 969 {
 970     if(pUuidList == NULL || targetId == NULL)
 971     {
 972         return false;
 973     }
 974     OCUuidList_t *tmp1 = NULL,*tmp2=NULL;
 975     LL_FOREACH_SAFE(pUuidList, tmp1, tmp2)
 976     {
 977         if(0 == memcmp(tmp1->dev.id, targetId->id, sizeof(targetId->id)))
 978         {
 979             LL_DELETE(pUuidList, tmp1);
 980             OICFree(tmp1);
 981             return true;
 982         }
 983     }
 984     return false;
 985 }