resource/csdk/stack/src/ocresource.c

   1 //******************************************************************
   2 //
   3 // Copyright 2014 Intel Mobile Communications GmbH All Rights Reserved.
   4 //
   5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   6 //
   7 // Licensed under the Apache License, Version 2.0 (the "License");
   8 // you may not use this file except in compliance with the License.
   9 // You may obtain a copy of the License at
  10 //
  11 //      http://www.apache.org/licenses/LICENSE-2.0
  12 //
  13 // Unless required by applicable law or agreed to in writing, software
  14 // distributed under the License is distributed on an "AS IS" BASIS,
  15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 // See the License for the specific language governing permissions and
  17 // limitations under the License.
  18 //
  19 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  20
  21 // Defining _POSIX_C_SOURCE macro with 200112L (or greater) as value
  22 // causes header files to expose definitions
  23 // corresponding to the POSIX.1-2001 base
  24 // specification (excluding the XSI extension).
  25 // For POSIX.1-2001 base specification,
  26 // Refer http://pubs.opengroup.org/onlinepubs/009695399/
  27 #define _POSIX_C_SOURCE 200112L
  28 #ifndef _GNU_SOURCE
  29 #define _GNU_SOURCE
  30 #endif
  31
  32 #include "iotivity_config.h"
  33 #ifdef HAVE_STRING_H
  34 #include <string.h>
  35 #endif
  36 #ifdef HAVE_STRINGS_H
  37 #include <strings.h>
  38 #endif
  39
  40 #include "ocresource.h"
  41 #include "ocresourcehandler.h"
  42 #include "ocobserve.h"
  43 #include "occollection.h"
  44 #include "oic_malloc.h"
  45 #include "oic_string.h"
  46 #include "logger.h"
  47 #include "cJSON.h"
  48 #include "ocpayload.h"
  49 #include "secureresourcemanager.h"
  50 #include "cacommon.h"
  51 #include "cainterface.h"
  52 #include "ocpayload.h"
  53
  54 #ifdef ROUTING_GATEWAY
  55 #include "routingmanager.h"
  56 #endif
  57
  58 #ifdef RD_SERVER
  59 #include "rd_database.h"
  60 #endif
  61
  62 /// Module Name
  63 #define TAG "OIC_RI_RESOURCE"
  64
  65 #define VERIFY_SUCCESS(op, successCode) { if (op != successCode) \
  66             {OIC_LOG_V(FATAL, TAG, "%s failed!!", #op); goto exit;} }
  67
  68 #define VERIFY_NON_NULL(arg, logLevel, retVal) { if (!(arg)) { OIC_LOG((logLevel), \
  69              TAG, #arg " is NULL"); return (retVal); } }
  70
  71 #include "platform_features.h"
  72
  73 extern OCResource *headResource;
  74 static OCPlatformInfo savedPlatformInfo = {0};
  75 static OCDeviceInfo savedDeviceInfo = {0};
  76
  77 /**
  78  * Prepares a Payload for response.
  79  */
  80 static OCStackResult BuildVirtualResourceResponse(const OCResource *resourcePtr,
  81                                                   OCDiscoveryPayload* payload,
  82                                                   OCDevAddr *endpoint);
  83
  84 //-----------------------------------------------------------------------------
  85 // Default resource entity handler function
  86 //-----------------------------------------------------------------------------
  87 OCEntityHandlerResult defaultResourceEHandler(OCEntityHandlerFlag flag,
  88         OCEntityHandlerRequest * request, void* callbackParam)
  89 {
  90     //TODO ("Implement me!!!!");
  91     // TODO:  remove silence unused param warnings
  92     (void) flag;
  93     (void) request;
  94     (void) callbackParam;
  95     return  OC_EH_OK; // Making sure that the Default EH and the Vendor EH have matching signatures
  96 }
  97
  98 /* This method will retrieve the port at which the secure resource is hosted */
  99 static OCStackResult GetSecurePortInfo(OCDevAddr *endpoint, uint16_t *port)
 100 {
 101     uint16_t p = 0;
 102
 103     if (endpoint->adapter == OC_ADAPTER_IP)
 104     {
 105         if (endpoint->flags & OC_IP_USE_V6)
 106         {
 107             p = caglobals.ip.u6s.port;
 108         }
 109         else if (endpoint->flags & OC_IP_USE_V4)
 110         {
 111             p = caglobals.ip.u4s.port;
 112         }
 113     }
 114
 115     *port = p;
 116     return OC_STACK_OK;
 117 }
 118
 119 #ifdef TCP_ADAPTER
 120 /* This method will retrieve the tcp port */
 121 static OCStackResult GetTCPPortInfo(OCDevAddr *endpoint, uint16_t *port)
 122 {
 123     uint16_t p = 0;
 124
 125     if (endpoint->adapter == OC_ADAPTER_IP)
 126     {
 127         if (endpoint->flags & OC_IP_USE_V4)
 128         {
 129             p = caglobals.tcp.ipv4.port;
 130         }
 131         else if (endpoint->flags & OC_IP_USE_V6)
 132         {
 133             p = caglobals.tcp.ipv6.port;
 134         }
 135     }
 136
 137     *port = p;
 138     return OC_STACK_OK;
 139 }
 140 #endif
 141
 142 /*
 143  * Function will extract 0, 1 or 2 filters from query.
 144  * More than 2 filters or unsupported filters will result in error.
 145  * If both filters are of the same supported type, the 2nd one will be picked.
 146  * Resource and device filters in the SAME query are NOT validated
 147  * and resources will likely not clear filters.
 148  */
 149 static OCStackResult ExtractFiltersFromQuery(char *query, char **filterOne, char **filterTwo)
 150 {
 151
 152     char *key = NULL;
 153     char *value = NULL;
 154     char *restOfQuery = NULL;
 155     int numKeyValuePairsParsed = 0;
 156
 157     *filterOne = NULL;
 158     *filterTwo = NULL;
 159
 160     OIC_LOG_V(INFO, TAG, "Extracting params from %s", query);
 161
 162     if (strnlen(query, MAX_QUERY_LENGTH) >= MAX_QUERY_LENGTH)
 163     {
 164         OIC_LOG(ERROR, TAG, "Query exceeds maximum length.");
 165         return OC_STACK_INVALID_QUERY;
 166     }
 167
 168     char *keyValuePair = strtok_r (query, OC_QUERY_SEPARATOR, &restOfQuery);
 169
 170     while(keyValuePair)
 171     {
 172         if (numKeyValuePairsParsed >= 2)
 173         {
 174             OIC_LOG(ERROR, TAG, "More than 2 queries params in URI.");
 175             return OC_STACK_INVALID_QUERY;
 176         }
 177
 178         key = strtok_r(keyValuePair, OC_KEY_VALUE_DELIMITER, &value);
 179
 180         if (!key || !value)
 181         {
 182             return OC_STACK_INVALID_QUERY;
 183         }
 184         else if (strncasecmp(key, OC_RSRVD_INTERFACE, sizeof(OC_RSRVD_INTERFACE) - 1) == 0)
 185         {
 186             *filterOne = value;     // if
 187         }
 188         else if (strncasecmp(key, OC_RSRVD_RESOURCE_TYPE, sizeof(OC_RSRVD_INTERFACE) - 1) == 0)
 189         {
 190             *filterTwo = value;     // rt
 191         }
 192         else
 193         {
 194             OIC_LOG_V(ERROR, TAG, "Unsupported query key: %s", key);
 195             return OC_STACK_INVALID_QUERY;
 196         }
 197         ++numKeyValuePairsParsed;
 198
 199         keyValuePair = strtok_r(NULL, OC_QUERY_SEPARATOR, &restOfQuery);
 200     }
 201
 202     OIC_LOG_V(INFO, TAG, "Extracted params if: %s and rt: %s.", *filterOne, *filterTwo);
 203     return OC_STACK_OK;
 204 }
 205
 206 static OCVirtualResources GetTypeOfVirtualURI(const char *uriInRequest)
 207 {
 208     if (strcmp(uriInRequest, OC_RSRVD_WELL_KNOWN_URI) == 0)
 209     {
 210         return OC_WELL_KNOWN_URI;
 211     }
 212     else if (strcmp(uriInRequest, OC_RSRVD_DEVICE_URI) == 0)
 213     {
 214         return OC_DEVICE_URI;
 215     }
 216     else if (strcmp(uriInRequest, OC_RSRVD_PLATFORM_URI) == 0)
 217     {
 218         return OC_PLATFORM_URI;
 219     }
 220     else if (strcmp(uriInRequest, OC_RSRVD_RESOURCE_TYPES_URI) == 0)
 221     {
 222         return OC_RESOURCE_TYPES_URI;
 223     }
 224 #ifdef ROUTING_GATEWAY
 225     else if (0 == strcmp(uriInRequest, OC_RSRVD_GATEWAY_URI))
 226     {
 227         return OC_GATEWAY_URI;
 228     }
 229 #endif
 230 #ifdef WITH_PRESENCE
 231     else if (strcmp(uriInRequest, OC_RSRVD_PRESENCE_URI) == 0)
 232     {
 233         return OC_PRESENCE;
 234     }
 235 #endif //WITH_PRESENCE
 236
 237 #ifdef MQ_BROKER
 238     else if (0 == strcmp(uriInRequest, OC_RSRVD_WELL_KNOWN_MQ_URI))
 239     {
 240         return OC_MQ_BROKER_URI;
 241     }
 242 #endif //MQ_BROKER
 243     return OC_UNKNOWN_URI;
 244 }
 245
 246 static OCStackResult getQueryParamsForFiltering (OCVirtualResources uri, char *query,
 247                                             char **filterOne, char **filterTwo)
 248 {
 249     if(!filterOne || !filterTwo)
 250     {
 251         return OC_STACK_INVALID_PARAM;
 252     }
 253
 254     *filterOne = NULL;
 255     *filterTwo = NULL;
 256
 257     #ifdef WITH_PRESENCE
 258     if (uri == OC_PRESENCE)
 259     {
 260         //Nothing needs to be done, except for pass a OC_PRESENCE query through as OC_STACK_OK.
 261         OIC_LOG(INFO, TAG, "OC_PRESENCE Request for virtual resource.");
 262         return OC_STACK_OK;
 263     }
 264     #endif
 265
 266     OCStackResult result = OC_STACK_OK;
 267
 268     if (query && *query)
 269     {
 270         result = ExtractFiltersFromQuery(query, filterOne, filterTwo);
 271     }
 272
 273     return result;
 274 }
 275
 276 OCStackResult BuildResponseRepresentation(const OCResource *resourcePtr,
 277                     OCRepPayload** payload)
 278 {
 279     OCRepPayload *tempPayload = OCRepPayloadCreate();
 280
 281     if (!resourcePtr)
 282     {
 283         OCRepPayloadDestroy(tempPayload);
 284         return OC_STACK_INVALID_PARAM;
 285     }
 286
 287     if(!tempPayload)
 288     {
 289         return OC_STACK_NO_MEMORY;
 290     }
 291
 292     OCRepPayloadSetUri(tempPayload, resourcePtr->uri);
 293
 294     OCResourceType *resType = resourcePtr->rsrcType;
 295     while(resType)
 296     {
 297         OCRepPayloadAddResourceType(tempPayload, resType->resourcetypename);
 298         resType = resType->next;
 299     }
 300
 301     OCResourceInterface *resInterface = resourcePtr->rsrcInterface;
 302     while(resInterface)
 303     {
 304         OCRepPayloadAddInterface(tempPayload, resInterface->name);
 305         resInterface = resInterface->next;
 306     }
 307
 308     OCAttribute *resAttrib = resourcePtr->rsrcAttributes;
 309     while(resAttrib)
 310     {
 311         OCRepPayloadSetPropString(tempPayload, resAttrib->attrName,
 312                                 resAttrib->attrValue);
 313         resAttrib = resAttrib->next;
 314     }
 315
 316     if(!*payload)
 317     {
 318         *payload = tempPayload;
 319     }
 320     else
 321     {
 322         OCRepPayloadAppend(*payload, tempPayload);
 323     }
 324
 325     return OC_STACK_OK;
 326 }
 327
 328 OCStackResult BuildVirtualResourceResponse(const OCResource *resourcePtr,
 329                         OCDiscoveryPayload *payload, OCDevAddr *devAddr)
 330 {
 331     if (!resourcePtr || !payload)
 332     {
 333         return OC_STACK_INVALID_PARAM;
 334     }
 335     uint16_t securePort = 0;
 336     if (resourcePtr->resourceProperties & OC_SECURE)
 337     {
 338        if (GetSecurePortInfo(devAddr, &securePort) != OC_STACK_OK)
 339        {
 340            securePort = 0;
 341        }
 342     }
 343
 344 #ifdef TCP_ADAPTER
 345     uint16_t tcpPort = 0;
 346     if (GetTCPPortInfo(devAddr, &tcpPort) != OC_STACK_OK)
 347     {
 348         tcpPort = 0;
 349     }
 350     OCDiscoveryPayloadAddResource(payload, resourcePtr, securePort, tcpPort);
 351 #else
 352     OCDiscoveryPayloadAddResource(payload, resourcePtr, securePort);
 353 #endif
 354
 355     return OC_STACK_OK;
 356 }
 357
 358 uint8_t IsCollectionResource (OCResource *resource)
 359 {
 360     if(!resource)
 361     {
 362         return 0;
 363     }
 364
 365     if(resource->rsrcChildResourcesHead != NULL)
 366     {
 367         return 1;
 368     }
 369
 370     return 0;
 371 }
 372
 373 OCResource *FindResourceByUri(const char* resourceUri)
 374 {
 375     if(!resourceUri)
 376     {
 377         return NULL;
 378     }
 379
 380     OCResource * pointer = headResource;
 381     while (pointer)
 382     {
 383         if (strcmp(resourceUri, pointer->uri) == 0)
 384         {
 385             return pointer;
 386         }
 387         pointer = pointer->next;
 388     }
 389     OIC_LOG_V(INFO, TAG, "Resource %s not found", resourceUri);
 390     return NULL;
 391 }
 392
 393
 394 OCStackResult DetermineResourceHandling (const OCServerRequest *request,
 395                                          ResourceHandling *handling,
 396                                          OCResource **resource)
 397 {
 398     if(!request || !handling || !resource)
 399     {
 400         return OC_STACK_INVALID_PARAM;
 401     }
 402
 403     OIC_LOG_V(INFO, TAG, "DetermineResourceHandling for %s", request->resourceUrl);
 404
 405     // Check if virtual resource
 406     if (GetTypeOfVirtualURI(request->resourceUrl) != OC_UNKNOWN_URI)
 407     {
 408         OIC_LOG_V (INFO, TAG, "%s is virtual", request->resourceUrl);
 409         *handling = OC_RESOURCE_VIRTUAL;
 410         *resource = headResource;
 411         return OC_STACK_OK;
 412     }
 413     if (strlen((const char*)(request->resourceUrl)) == 0)
 414     {
 415         // Resource URL not specified
 416         *handling = OC_RESOURCE_NOT_SPECIFIED;
 417         return OC_STACK_NO_RESOURCE;
 418     }
 419     else
 420     {
 421         OCResource *resourcePtr = FindResourceByUri((const char*)request->resourceUrl);
 422         *resource = resourcePtr;
 423         if (!resourcePtr)
 424         {
 425             if(defaultDeviceHandler)
 426             {
 427                 *handling = OC_RESOURCE_DEFAULT_DEVICE_ENTITYHANDLER;
 428                 return OC_STACK_OK;
 429             }
 430
 431             // Resource does not exist
 432             // and default device handler does not exist
 433             *handling = OC_RESOURCE_NOT_SPECIFIED;
 434             return OC_STACK_NO_RESOURCE;
 435         }
 436
 437         if (IsCollectionResource (resourcePtr))
 438         {
 439             // Collection resource
 440             if (resourcePtr->entityHandler != defaultResourceEHandler)
 441             {
 442                 *handling = OC_RESOURCE_COLLECTION_WITH_ENTITYHANDLER;
 443                 return OC_STACK_OK;
 444             }
 445             else
 446             {
 447                 *handling = OC_RESOURCE_COLLECTION_DEFAULT_ENTITYHANDLER;
 448                 return OC_STACK_OK;
 449             }
 450         }
 451         else
 452         {
 453             // Resource not a collection
 454             if (resourcePtr->entityHandler != defaultResourceEHandler)
 455             {
 456                 *handling = OC_RESOURCE_NOT_COLLECTION_WITH_ENTITYHANDLER;
 457                 return OC_STACK_OK;
 458             }
 459             else
 460             {
 461                 *handling = OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER;
 462                 return OC_STACK_OK;
 463             }
 464         }
 465     }
 466 }
 467
 468 OCStackResult EntityHandlerCodeToOCStackCode(OCEntityHandlerResult ehResult)
 469 {
 470     OCStackResult result;
 471
 472     switch (ehResult)
 473     {
 474         case OC_EH_OK:
 475         case OC_EH_CONTENT:
 476         case OC_EH_VALID:
 477             result = OC_STACK_OK;
 478             break;
 479         case OC_EH_SLOW:
 480             result = OC_STACK_SLOW_RESOURCE;
 481             break;
 482         case OC_EH_ERROR:
 483             result = OC_STACK_ERROR;
 484             break;
 485         case OC_EH_FORBIDDEN:
 486             result = OC_STACK_RESOURCE_ERROR;
 487             break;
 488         case OC_EH_RESOURCE_CREATED:
 489             result = OC_STACK_RESOURCE_CREATED;
 490             break;
 491         case OC_EH_RESOURCE_DELETED:
 492             result = OC_STACK_RESOURCE_DELETED;
 493             break;
 494         case OC_EH_CHANGED:
 495             result = OC_STACK_RESOURCE_CHANGED;
 496             break;
 497         case OC_EH_RESOURCE_NOT_FOUND:
 498             result = OC_STACK_NO_RESOURCE;
 499             break;
 500         default:
 501             result = OC_STACK_ERROR;
 502     }
 503
 504     return result;
 505 }
 506
 507 static bool resourceMatchesRTFilter(OCResource *resource, char *resourceTypeFilter)
 508 {
 509     if (!resource)
 510     {
 511         return false;
 512     }
 513
 514     // Null or empty is analogous to no filter.
 515     if (resourceTypeFilter == NULL || *resourceTypeFilter == 0)
 516     {
 517         return true;
 518     }
 519
 520     OCResourceType *resourceTypePtr = resource->rsrcType;
 521
 522     while (resourceTypePtr)
 523     {
 524         if (strcmp (resourceTypePtr->resourcetypename, resourceTypeFilter) == 0)
 525         {
 526             return true;
 527         }
 528         resourceTypePtr = resourceTypePtr->next;
 529     }
 530
 531     OIC_LOG_V(INFO, TAG, "%s does not contain rt=%s.", resource->uri, resourceTypeFilter);
 532     return false;
 533 }
 534
 535 static bool resourceMatchesIFFilter(OCResource *resource, char *interfaceFilter)
 536 {
 537     if (!resource)
 538     {
 539         return false;
 540     }
 541
 542     // Null or empty is analogous to no filter.
 543     if (interfaceFilter == NULL || *interfaceFilter == 0)
 544     {
 545         return true;
 546     }
 547
 548     OCResourceInterface *interfacePtr = resource->rsrcInterface;
 549
 550     while (interfacePtr)
 551     {
 552         if ((strcmp (interfacePtr->name, interfaceFilter) == 0) &&
 553             (strcmp (OC_RSRVD_INTERFACE_LL, interfaceFilter) == 0 ||
 554              strcmp (OC_RSRVD_INTERFACE_DEFAULT, interfaceFilter) == 0))
 555         {
 556             return true;
 557         }
 558         interfacePtr = interfacePtr->next;
 559     }
 560
 561     OIC_LOG_V(INFO, TAG, "%s does not contain if=%s.", resource->uri, interfaceFilter);
 562     return false;
 563 }
 564
 565 /*
 566  * If the filters are null, they will be assumed to NOT be present
 567  * and the resource will not be matched against them.
 568  * Function will return true if all non null AND non empty filters passed in find a match.
 569  */
 570 static bool includeThisResourceInResponse(OCResource *resource,
 571                                           char *interfaceFilter,
 572                                           char *resourceTypeFilter)
 573 {
 574     if (!resource)
 575     {
 576         OIC_LOG(ERROR, TAG, "Invalid resource");
 577         return false;
 578     }
 579
 580     if (resource->resourceProperties & OC_EXPLICIT_DISCOVERABLE)
 581     {
 582         /*
 583          * At least one valid filter should be available to
 584          * include the resource in discovery response
 585          */
 586         if (!(resourceTypeFilter && *resourceTypeFilter))
 587         {
 588             OIC_LOG_V(INFO, TAG, "%s no query string for EXPLICIT_DISCOVERABLE \
 589                 resource", resource->uri);
 590             return false;
 591         }
 592     }
 593     else if ( !(resource->resourceProperties & OC_ACTIVE) ||
 594          !(resource->resourceProperties & OC_DISCOVERABLE))
 595     {
 596         OIC_LOG_V(INFO, TAG, "%s not ACTIVE or DISCOVERABLE", resource->uri);
 597         return false;
 598     }
 599
 600     return resourceMatchesIFFilter(resource, interfaceFilter) &&
 601            resourceMatchesRTFilter(resource, resourceTypeFilter);
 602
 603 }
 604
 605 OCStackResult SendNonPersistantDiscoveryResponse(OCServerRequest *request, OCResource *resource,
 606                                 OCPayload *discoveryPayload, OCEntityHandlerResult ehResult)
 607 {
 608     OCEntityHandlerResponse response = {0};
 609
 610     response.ehResult = ehResult;
 611     response.payload = discoveryPayload;
 612     response.persistentBufferFlag = 0;
 613     response.requestHandle = (OCRequestHandle) request;
 614     response.resourceHandle = (OCResourceHandle) resource;
 615
 616     return OCDoResponse(&response);
 617 }
 618
 619 static OCStackResult HandleVirtualResource (OCServerRequest *request, OCResource* resource)
 620 {
 621     if (!request || !resource)
 622     {
 623         return OC_STACK_INVALID_PARAM;
 624     }
 625
 626     OCStackResult discoveryResult = OC_STACK_ERROR;
 627     OCPayload* payload = NULL;
 628
 629     OIC_LOG(INFO, TAG, "Entering HandleVirtualResource");
 630
 631     OCVirtualResources virtualUriInRequest = GetTypeOfVirtualURI (request->resourceUrl);
 632
 633     // Step 1: Generate the response to discovery request
 634     if (virtualUriInRequest == OC_WELL_KNOWN_URI
 635 #ifdef MQ_BROKER
 636             || virtualUriInRequest == OC_MQ_BROKER_URI
 637 #endif
 638             )
 639     {
 640         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 641         {
 642             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 643             return OC_STACK_UNAUTHORIZED_REQ;
 644         }
 645
 646         char *interfaceQuery = NULL;
 647         char *resourceTypeQuery = NULL;
 648
 649         discoveryResult = getQueryParamsForFiltering (virtualUriInRequest, request->query,
 650                 &interfaceQuery, &resourceTypeQuery);
 651         bool interfaceQueryAllocated = false;
 652         if (!interfaceQuery && !resourceTypeQuery)
 653         {
 654             interfaceQueryAllocated = true;
 655             interfaceQuery = OICStrdup(OC_RSRVD_INTERFACE_LL);
 656         }
 657
 658         if (discoveryResult == OC_STACK_OK)
 659         {
 660             payload = (OCPayload *)OCDiscoveryPayloadCreate();
 661
 662             if (payload)
 663             {
 664                 OCDiscoveryPayload *discPayload = (OCDiscoveryPayload *)payload;
 665                 bool foundResourceAtRD = false;
 666
 667                 if (!resourceTypeQuery && interfaceQuery && (0 == strcmp(interfaceQuery, OC_RSRVD_INTERFACE_LL)))
 668                 {
 669                     OCResourceProperty prop = OC_DISCOVERABLE;
 670 #ifdef MQ_BROKER
 671                     if (OC_MQ_BROKER_URI == virtualUriInRequest)
 672                     {
 673                         prop = OC_MQ_BROKER;
 674                     }
 675 #endif
 676
 677                     for (; resource && discoveryResult == OC_STACK_OK; resource = resource->next)
 678                     {
 679                         foundResourceAtRD = false;
 680 #ifdef RD_SERVER
 681                         if (strcmp(resource->uri, OC_RSRVD_RD_URI) == 0)
 682                         {
 683                             if (OC_STACK_OK == OCRDDatabaseCheckResources(interfaceQuery, resourceTypeQuery, discPayload))
 684                             {
 685                                 foundResourceAtRD = true;
 686                                 discoveryResult = OC_STACK_OK;
 687                             }
 688                         }
 689 #endif
 690                         if (!foundResourceAtRD && (resource->resourceProperties & prop))
 691                         {
 692                             discoveryResult = BuildVirtualResourceResponse(resource, discPayload, &request->devAddr);
 693                         }
 694                     }
 695                 }
 696                 else
 697                 {
 698                     if (interfaceQuery && (0 != strcmp(interfaceQuery, OC_RSRVD_INTERFACE_LL)))
 699                     {
 700                         discPayload->uri = OICStrdup(OC_RSRVD_WELL_KNOWN_URI);
 701                         VERIFY_NON_NULL(discPayload->uri, ERROR, OC_STACK_NO_MEMORY);
 702                         if (savedDeviceInfo.deviceName)
 703                         {
 704                             discPayload->name = OICStrdup(savedDeviceInfo.deviceName);
 705                             VERIFY_NON_NULL(discPayload->name, ERROR, OC_STACK_NO_MEMORY);
 706                         }
 707                         discPayload->type = (OCStringLL*)OICCalloc(1, sizeof(OCStringLL));
 708                         VERIFY_NON_NULL(discPayload->type, ERROR, OC_STACK_NO_MEMORY);
 709                         discPayload->type->value = OICStrdup(OC_RSRVD_RESOURCE_TYPE_RES);
 710                         VERIFY_NON_NULL(discPayload->type->value, ERROR, OC_STACK_NO_MEMORY);
 711                         OCResourcePayloadAddStringLL(&discPayload->iface, OC_RSRVD_INTERFACE_LL);
 712                         OCResourcePayloadAddStringLL(&discPayload->iface, OC_RSRVD_INTERFACE_DEFAULT);
 713                         VERIFY_NON_NULL(discPayload->iface, ERROR, OC_STACK_NO_MEMORY);
 714                     }
 715                     for (;resource && discoveryResult == OC_STACK_OK; resource = resource->next)
 716                     {
 717 #ifdef RD_SERVER
 718                         if (strcmp(resource->uri, OC_RSRVD_RD_URI) == 0)
 719                         {
 720                             if (OC_STACK_OK == OCRDDatabaseCheckResources(interfaceQuery, resourceTypeQuery, discPayload))
 721                             {
 722                                 foundResourceAtRD = true;
 723                                 discoveryResult = OC_STACK_OK;
 724                             }
 725                         }
 726 #endif
 727                         if (!foundResourceAtRD && includeThisResourceInResponse(resource, interfaceQuery, resourceTypeQuery))
 728                         {
 729                             discoveryResult = BuildVirtualResourceResponse(resource, discPayload, &request->devAddr);
 730                         }
 731                     }
 732                     // Set discoveryResult appropriately if no 'valid' resources are available
 733                     if (discPayload->resources == NULL && !foundResourceAtRD)
 734                     {
 735                         discoveryResult = OC_STACK_NO_RESOURCE;
 736                     }
 737                 }
 738                 if (discoveryResult == OC_STACK_OK && foundResourceAtRD == false)
 739                 {
 740                     discPayload->sid = (char *)OICCalloc(1, UUID_STRING_SIZE);
 741                     VERIFY_NON_NULL(discPayload->sid, ERROR, OC_STACK_NO_MEMORY);
 742
 743                     const char* uid = OCGetServerInstanceIDString();
 744                     if (uid)
 745                     {
 746                         memcpy(discPayload->sid, uid, UUID_STRING_SIZE);
 747                     }
 748                 }
 749             }
 750             else
 751             {
 752                 discoveryResult = OC_STACK_NO_MEMORY;
 753             }
 754
 755         }
 756         else
 757         {
 758             OIC_LOG_V(ERROR, TAG, "Error (%d) parsing query.", discoveryResult);
 759         }
 760         if (interfaceQueryAllocated)
 761         {
 762             OICFree(interfaceQuery);
 763         }
 764     }
 765     else if (virtualUriInRequest == OC_DEVICE_URI)
 766     {
 767         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 768         {
 769             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 770             return OC_STACK_UNAUTHORIZED_REQ;
 771         }
 772
 773         const char* deviceId = OCGetServerInstanceIDString();
 774         if (!deviceId)
 775         {
 776             discoveryResult = OC_STACK_ERROR;
 777         }
 778         else
 779         {
 780             char *dataModelVersions = OCCreateString(savedDeviceInfo.dataModelVersions);
 781             if (!dataModelVersions)
 782             {
 783                 discoveryResult = OC_STACK_NO_MEMORY;
 784             }
 785             else
 786             {
 787                 payload = (OCPayload*) OCDevicePayloadCreate(deviceId, savedDeviceInfo.deviceName,
 788                     savedDeviceInfo.types, savedDeviceInfo.specVersion, dataModelVersions);
 789                 if (!payload)
 790                 {
 791                      discoveryResult = OC_STACK_NO_MEMORY;
 792                 }
 793                 else
 794                 {
 795                      discoveryResult = OC_STACK_OK;
 796                 }
 797                 OICFree(dataModelVersions);
 798             }
 799         }
 800     }
 801     else if (virtualUriInRequest == OC_PLATFORM_URI)
 802     {
 803         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 804         {
 805             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 806             return OC_STACK_UNAUTHORIZED_REQ;
 807         }
 808
 809         payload = (OCPayload*)OCPlatformPayloadCreate(&savedPlatformInfo);
 810         if (!payload)
 811         {
 812             discoveryResult = OC_STACK_NO_MEMORY;
 813         }
 814         else
 815         {
 816             discoveryResult = OC_STACK_OK;
 817         }
 818     }
 819 #ifdef ROUTING_GATEWAY
 820     else if (OC_GATEWAY_URI == virtualUriInRequest)
 821     {
 822         // Received request for a gateway
 823         OIC_LOG(INFO, TAG, "Request is for Gateway Virtual Request");
 824         discoveryResult = RMHandleGatewayRequest(request, resource);
 825
 826     }
 827 #endif
 828
 829     /**
 830      * Step 2: Send the discovery response
 831      *
 832      * Iotivity should respond to discovery requests in below manner:
 833      * 1)If query filter matching fails and discovery request is multicast,
 834      *   it should NOT send any response.
 835      * 2)If query filter matching fails and discovery request is unicast,
 836      *   it should send an error(RESOURCE_NOT_FOUND - 404) response.
 837      * 3)If Server does not have any 'DISCOVERABLE' resources and discovery
 838      *   request is multicast, it should NOT send any response.
 839      * 4)If Server does not have any 'DISCOVERABLE' resources and discovery
 840      *   request is unicast, it should send an error(RESOURCE_NOT_FOUND - 404) response.
 841      */
 842
 843 #ifdef WITH_PRESENCE
 844     if ((virtualUriInRequest == OC_PRESENCE) &&
 845         (resource->resourceProperties & OC_ACTIVE))
 846     {
 847         // Need to send ACK when the request is CON.
 848         if (request->qos == OC_HIGH_QOS)
 849         {
 850             CAEndpoint_t endpoint = { .adapter = CA_DEFAULT_ADAPTER };
 851             CopyDevAddrToEndpoint(&request->devAddr, &endpoint);
 852             SendDirectStackResponse(&endpoint, request->coapID, CA_EMPTY, CA_MSG_ACKNOWLEDGE,
 853                                     0, NULL, NULL, 0, NULL, CA_RESPONSE_FOR_RES);
 854         }
 855
 856         // Presence uses observer notification api to respond via SendPresenceNotification.
 857         SendPresenceNotification(resource->rsrcType, OC_PRESENCE_TRIGGER_CHANGE);
 858     }
 859     else
 860     #endif
 861 #ifdef ROUTING_GATEWAY
 862     // Gateway uses the RMHandleGatewayRequest to respond to the request.
 863     if (OC_GATEWAY_URI != virtualUriInRequest)
 864 #endif
 865     {
 866         if(discoveryResult == OC_STACK_OK)
 867         {
 868             SendNonPersistantDiscoveryResponse(request, resource, payload, OC_EH_OK);
 869         }
 870         else if(((request->devAddr.flags &  OC_MULTICAST) == false) &&
 871             (request->devAddr.adapter != OC_ADAPTER_RFCOMM_BTEDR) &&
 872             (request->devAddr.adapter != OC_ADAPTER_GATT_BTLE))
 873         {
 874             OIC_LOG_V(ERROR, TAG, "Sending a (%d) error to (%d) discovery request",
 875                 discoveryResult, virtualUriInRequest);
 876             SendNonPersistantDiscoveryResponse(request, resource, NULL,
 877                 (discoveryResult == OC_STACK_NO_RESOURCE) ? OC_EH_RESOURCE_NOT_FOUND : OC_EH_ERROR);
 878         }
 879         else
 880         {
 881             // Ignoring the discovery request as per RFC 7252, Section #8.2
 882             OIC_LOG(INFO, TAG, "Silently ignoring the request since no useful data to send. ");
 883         }
 884     }
 885
 886     OCPayloadDestroy(payload);
 887
 888     return OC_STACK_OK;
 889 }
 890
 891 static OCStackResult
 892 HandleDefaultDeviceEntityHandler (OCServerRequest *request)
 893 {
 894     if(!request)
 895     {
 896         return OC_STACK_INVALID_PARAM;
 897     }
 898
 899     OCStackResult result = OC_STACK_OK;
 900     OCEntityHandlerResult ehResult = OC_EH_ERROR;
 901     OCEntityHandlerRequest ehRequest = {0};
 902
 903     OIC_LOG(INFO, TAG, "Entering HandleResourceWithDefaultDeviceEntityHandler");
 904     result = FormOCEntityHandlerRequest(&ehRequest,
 905                                         (OCRequestHandle) request,
 906                                         request->method,
 907                                         &request->devAddr,
 908                                         (OCResourceHandle) NULL, request->query,
 909                                         PAYLOAD_TYPE_REPRESENTATION,
 910                                         request->payload,
 911                                         request->payloadSize,
 912                                         request->numRcvdVendorSpecificHeaderOptions,
 913                                         request->rcvdVendorSpecificHeaderOptions,
 914                                         (OCObserveAction)request->observationOption,
 915                                         (OCObservationId)0,
 916                                         request->coapID);
 917     VERIFY_SUCCESS(result, OC_STACK_OK);
 918
 919     // At this point we know for sure that defaultDeviceHandler exists
 920     ehResult = defaultDeviceHandler(OC_REQUEST_FLAG, &ehRequest,
 921                                   (char*) request->resourceUrl, defaultDeviceHandlerCallbackParameter);
 922     if(ehResult == OC_EH_SLOW)
 923     {
 924         OIC_LOG(INFO, TAG, "This is a slow resource");
 925         request->slowFlag = 1;
 926     }
 927     else if(ehResult == OC_EH_ERROR)
 928     {
 929         FindAndDeleteServerRequest(request);
 930     }
 931     result = EntityHandlerCodeToOCStackCode(ehResult);
 932 exit:
 933     OCPayloadDestroy(ehRequest.payload);
 934     return result;
 935 }
 936
 937 static OCStackResult
 938 HandleResourceWithEntityHandler (OCServerRequest *request,
 939                                  OCResource *resource,
 940                                  uint8_t collectionResource)
 941 {
 942     if(!request || ! resource)
 943     {
 944         return OC_STACK_INVALID_PARAM;
 945     }
 946
 947     OCStackResult result = OC_STACK_ERROR;
 948     OCEntityHandlerResult ehResult = OC_EH_ERROR;
 949     OCEntityHandlerFlag ehFlag = OC_REQUEST_FLAG;
 950     ResourceObserver *resObs = NULL;
 951
 952     OCEntityHandlerRequest ehRequest = {0};
 953
 954     OIC_LOG(INFO, TAG, "Entering HandleResourceWithEntityHandler");
 955     OCPayloadType type = PAYLOAD_TYPE_REPRESENTATION;
 956     // check the security resource
 957     if (request && request->resourceUrl && SRMIsSecurityResourceURI(request->resourceUrl))
 958     {
 959         type = PAYLOAD_TYPE_SECURITY;
 960
 961     }
 962
 963     result = FormOCEntityHandlerRequest(&ehRequest,
 964                                         (OCRequestHandle)request,
 965                                         request->method,
 966                                         &request->devAddr,
 967                                         (OCResourceHandle)resource,
 968                                         request->query,
 969                                         type,
 970                                         request->payload,
 971                                         request->payloadSize,
 972                                         request->numRcvdVendorSpecificHeaderOptions,
 973                                         request->rcvdVendorSpecificHeaderOptions,
 974                                         (OCObserveAction)request->observationOption,
 975                                         0,
 976                                         request->coapID);
 977     VERIFY_SUCCESS(result, OC_STACK_OK);
 978
 979     if(ehRequest.obsInfo.action == OC_OBSERVE_NO_OPTION)
 980     {
 981         OIC_LOG(INFO, TAG, "No observation requested");
 982         ehFlag = OC_REQUEST_FLAG;
 983     }
 984     else if(ehRequest.obsInfo.action == OC_OBSERVE_REGISTER && !collectionResource)
 985     {
 986         OIC_LOG(INFO, TAG, "Observation registration requested");
 987
 988         ResourceObserver *obs = GetObserverUsingToken (request->requestToken,
 989                                     request->tokenLength);
 990
 991         if (obs)
 992         {
 993             OIC_LOG (INFO, TAG, "Observer with this token already present");
 994             OIC_LOG (INFO, TAG, "Possibly re-transmitted CON OBS request");
 995             OIC_LOG (INFO, TAG, "Not adding observer. Not responding to client");
 996             OIC_LOG (INFO, TAG, "The first request for this token is already ACKED.");
 997
 998             // server requests are usually free'd when the response is sent out
 999             // for the request in ocserverrequest.c : HandleSingleResponse()
1000             // Since we are making an early return and not responding, the server request
1001             // needs to be deleted.
1002             FindAndDeleteServerRequest (request);
1003             return OC_STACK_OK;
1004         }
1005
1006         result = GenerateObserverId(&ehRequest.obsInfo.obsId);
1007         VERIFY_SUCCESS(result, OC_STACK_OK);
1008
1009         result = AddObserver ((const char*)(request->resourceUrl),
1010                 (const char *)(request->query),
1011                 ehRequest.obsInfo.obsId, request->requestToken, request->tokenLength,
1012                 resource, request->qos, request->acceptFormat,
1013                 &request->devAddr);
1014
1015         if(result == OC_STACK_OK)
1016         {
1017             OIC_LOG(INFO, TAG, "Added observer successfully");
1018             request->observeResult = OC_STACK_OK;
1019             ehFlag = (OCEntityHandlerFlag)(OC_REQUEST_FLAG | OC_OBSERVE_FLAG);
1020         }
1021         else if (result == OC_STACK_RESOURCE_ERROR)
1022         {
1023             OIC_LOG(INFO, TAG, "The Resource is not active, discoverable or observable");
1024             request->observeResult = OC_STACK_ERROR;
1025             ehFlag = OC_REQUEST_FLAG;
1026         }
1027         else
1028         {
1029             // The error in observeResult for the request will be used when responding to this
1030             // request by omitting the observation option/sequence number.
1031             request->observeResult = OC_STACK_ERROR;
1032             OIC_LOG(ERROR, TAG, "Observer Addition failed");
1033             ehFlag = OC_REQUEST_FLAG;
1034             FindAndDeleteServerRequest(request);
1035             goto exit;
1036         }
1037
1038     }
1039     else if(ehRequest.obsInfo.action == OC_OBSERVE_DEREGISTER &&
1040             !collectionResource)
1041     {
1042         OIC_LOG(INFO, TAG, "Deregistering observation requested");
1043
1044         resObs = GetObserverUsingToken (request->requestToken, request->tokenLength);
1045
1046         if (NULL == resObs)
1047         {
1048             // Stack does not contain this observation request
1049             // Either token is incorrect or observation list is corrupted
1050             result = OC_STACK_ERROR;
1051             goto exit;
1052         }
1053         ehRequest.obsInfo.obsId = resObs->observeId;
1054         ehFlag = (OCEntityHandlerFlag)(ehFlag | OC_OBSERVE_FLAG);
1055
1056         result = DeleteObserverUsingToken (request->requestToken, request->tokenLength);
1057
1058         if(result == OC_STACK_OK)
1059         {
1060             OIC_LOG(INFO, TAG, "Removed observer successfully");
1061             request->observeResult = OC_STACK_OK;
1062             // There should be no observe option header for de-registration response.
1063             // Set as an invalid value here so we can detect it later and remove the field in response.
1064             request->observationOption = MAX_SEQUENCE_NUMBER + 1;
1065         }
1066         else
1067         {
1068             request->observeResult = OC_STACK_ERROR;
1069             OIC_LOG(ERROR, TAG, "Observer Removal failed");
1070             FindAndDeleteServerRequest(request);
1071             goto exit;
1072         }
1073     }
1074     else
1075     {
1076         result = OC_STACK_ERROR;
1077         goto exit;
1078     }
1079
1080     ehResult = resource->entityHandler(ehFlag, &ehRequest, resource->entityHandlerCallbackParam);
1081     if(ehResult == OC_EH_SLOW)
1082     {
1083         OIC_LOG(INFO, TAG, "This is a slow resource");
1084         request->slowFlag = 1;
1085     }
1086     else if(ehResult == OC_EH_ERROR)
1087     {
1088         FindAndDeleteServerRequest(request);
1089     }
1090     result = EntityHandlerCodeToOCStackCode(ehResult);
1091 exit:
1092     OCPayloadDestroy(ehRequest.payload);
1093     return result;
1094 }
1095
1096 static OCStackResult
1097 HandleCollectionResourceDefaultEntityHandler (OCServerRequest *request,
1098                                               OCResource *resource)
1099 {
1100     if(!request || !resource)
1101     {
1102         return OC_STACK_INVALID_PARAM;
1103     }
1104
1105     OCStackResult result = OC_STACK_ERROR;
1106     OCEntityHandlerRequest ehRequest = {0};
1107
1108     result = FormOCEntityHandlerRequest(&ehRequest,
1109                                         (OCRequestHandle)request,
1110                                         request->method,
1111                                         &request->devAddr,
1112                                         (OCResourceHandle)resource,
1113                                         request->query,
1114                                         PAYLOAD_TYPE_REPRESENTATION,
1115                                         request->payload,
1116                                         request->payloadSize,
1117                                         request->numRcvdVendorSpecificHeaderOptions,
1118                                         request->rcvdVendorSpecificHeaderOptions,
1119                                         (OCObserveAction)request->observationOption,
1120                                         (OCObservationId)0,
1121                                         request->coapID);
1122     if(result == OC_STACK_OK)
1123     {
1124         result = DefaultCollectionEntityHandler (OC_REQUEST_FLAG, &ehRequest);
1125     }
1126
1127     OCPayloadDestroy(ehRequest.payload);
1128     return result;
1129 }
1130
1131 OCStackResult
1132 ProcessRequest(ResourceHandling resHandling, OCResource *resource, OCServerRequest *request)
1133 {
1134     OCStackResult ret = OC_STACK_OK;
1135
1136     switch (resHandling)
1137     {
1138         case OC_RESOURCE_VIRTUAL:
1139         {
1140             ret = HandleVirtualResource (request, resource);
1141             break;
1142         }
1143         case OC_RESOURCE_DEFAULT_DEVICE_ENTITYHANDLER:
1144         {
1145             ret = HandleDefaultDeviceEntityHandler(request);
1146             break;
1147         }
1148         case OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER:
1149         {
1150             OIC_LOG(INFO, TAG, "OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER");
1151             return OC_STACK_ERROR;
1152         }
1153         case OC_RESOURCE_NOT_COLLECTION_WITH_ENTITYHANDLER:
1154         {
1155             ret = HandleResourceWithEntityHandler (request, resource, 0);
1156             break;
1157         }
1158         case OC_RESOURCE_COLLECTION_WITH_ENTITYHANDLER:
1159         {
1160             ret = HandleResourceWithEntityHandler (request, resource, 1);
1161             break;
1162         }
1163         case OC_RESOURCE_COLLECTION_DEFAULT_ENTITYHANDLER:
1164         {
1165             ret = HandleCollectionResourceDefaultEntityHandler (request, resource);
1166             break;
1167         }
1168         case OC_RESOURCE_NOT_SPECIFIED:
1169         {
1170             ret = OC_STACK_NO_RESOURCE;
1171             break;
1172         }
1173         default:
1174         {
1175             OIC_LOG(INFO, TAG, "Invalid Resource Determination");
1176             return OC_STACK_ERROR;
1177         }
1178     }
1179     return ret;
1180 }
1181
1182 void DeletePlatformInfo()
1183 {
1184     OIC_LOG(INFO, TAG, "Deleting platform info.");
1185
1186     OICFree(savedPlatformInfo.platformID);
1187     savedPlatformInfo.platformID = NULL;
1188
1189     OICFree(savedPlatformInfo.manufacturerName);
1190     savedPlatformInfo.manufacturerName = NULL;
1191
1192     OICFree(savedPlatformInfo.manufacturerUrl);
1193     savedPlatformInfo.manufacturerUrl = NULL;
1194
1195     OICFree(savedPlatformInfo.modelNumber);
1196     savedPlatformInfo.modelNumber = NULL;
1197
1198     OICFree(savedPlatformInfo.dateOfManufacture);
1199     savedPlatformInfo.dateOfManufacture = NULL;
1200
1201     OICFree(savedPlatformInfo.platformVersion);
1202     savedPlatformInfo.platformVersion = NULL;
1203
1204     OICFree(savedPlatformInfo.operatingSystemVersion);
1205     savedPlatformInfo.operatingSystemVersion = NULL;
1206
1207     OICFree(savedPlatformInfo.hardwareVersion);
1208     savedPlatformInfo.hardwareVersion = NULL;
1209
1210     OICFree(savedPlatformInfo.firmwareVersion);
1211     savedPlatformInfo.firmwareVersion = NULL;
1212
1213     OICFree(savedPlatformInfo.supportUrl);
1214     savedPlatformInfo.supportUrl = NULL;
1215
1216     OICFree(savedPlatformInfo.systemTime);
1217     savedPlatformInfo.systemTime = NULL;
1218 }
1219
1220 static OCStackResult DeepCopyPlatFormInfo(OCPlatformInfo info)
1221 {
1222     savedPlatformInfo.platformID = OICStrdup(info.platformID);
1223     savedPlatformInfo.manufacturerName = OICStrdup(info.manufacturerName);
1224     savedPlatformInfo.manufacturerUrl = OICStrdup(info.manufacturerUrl);
1225     savedPlatformInfo.modelNumber = OICStrdup(info.modelNumber);
1226     savedPlatformInfo.dateOfManufacture = OICStrdup(info.dateOfManufacture);
1227     savedPlatformInfo.platformVersion = OICStrdup(info.platformVersion);
1228     savedPlatformInfo.operatingSystemVersion = OICStrdup(info.operatingSystemVersion);
1229     savedPlatformInfo.hardwareVersion = OICStrdup(info.hardwareVersion);
1230     savedPlatformInfo.firmwareVersion = OICStrdup(info.firmwareVersion);
1231     savedPlatformInfo.supportUrl = OICStrdup(info.supportUrl);
1232     savedPlatformInfo.systemTime = OICStrdup(info.systemTime);
1233
1234     if ((!savedPlatformInfo.platformID && info.platformID)||
1235         (!savedPlatformInfo.manufacturerName && info.manufacturerName)||
1236         (!savedPlatformInfo.manufacturerUrl && info.manufacturerUrl)||
1237         (!savedPlatformInfo.modelNumber && info.modelNumber)||
1238         (!savedPlatformInfo.dateOfManufacture && info.dateOfManufacture)||
1239         (!savedPlatformInfo.platformVersion && info.platformVersion)||
1240         (!savedPlatformInfo.operatingSystemVersion && info.operatingSystemVersion)||
1241         (!savedPlatformInfo.hardwareVersion && info.hardwareVersion)||
1242         (!savedPlatformInfo.firmwareVersion && info.firmwareVersion)||
1243         (!savedPlatformInfo.supportUrl && info.supportUrl)||
1244         (!savedPlatformInfo.systemTime && info.systemTime))
1245     {
1246         DeletePlatformInfo();
1247         return OC_STACK_INVALID_PARAM;
1248     }
1249
1250     return OC_STACK_OK;
1251
1252 }
1253
1254 OCStackResult SavePlatformInfo(OCPlatformInfo info)
1255 {
1256     DeletePlatformInfo();
1257
1258     OCStackResult res = DeepCopyPlatFormInfo(info);
1259
1260     if (res != OC_STACK_OK)
1261     {
1262         OIC_LOG_V(ERROR, TAG, "Failed to save platform info. errno(%d)", res);
1263     }
1264     else
1265     {
1266         OIC_LOG(INFO, TAG, "Platform info saved.");
1267     }
1268
1269     return res;
1270 }
1271
1272 void DeleteDeviceInfo()
1273 {
1274     OIC_LOG(INFO, TAG, "Deleting device info.");
1275
1276     OICFree(savedDeviceInfo.deviceName);
1277     OCFreeOCStringLL(savedDeviceInfo.types);
1278     OICFree(savedDeviceInfo.specVersion);
1279     OCFreeOCStringLL(savedDeviceInfo.dataModelVersions);
1280     savedDeviceInfo.deviceName = NULL;
1281     savedDeviceInfo.specVersion = NULL;
1282     savedDeviceInfo.dataModelVersions = NULL;
1283 }
1284
1285 static OCStackResult DeepCopyDeviceInfo(OCDeviceInfo info)
1286 {
1287     savedDeviceInfo.deviceName = OICStrdup(info.deviceName);
1288
1289     if(!savedDeviceInfo.deviceName && info.deviceName)
1290     {
1291         DeleteDeviceInfo();
1292         return OC_STACK_NO_MEMORY;
1293     }
1294
1295     if (info.types)
1296     {
1297         savedDeviceInfo.types = CloneOCStringLL(info.types);
1298         OCStringLL *type = info.types;
1299         bool found = false;
1300         while (type)
1301         {
1302             if (type && type->value && 0 == strcmp(type->value, OC_RSRVD_RESOURCE_TYPE_DEVICE))
1303             {
1304                 found = true;
1305             }
1306             type = type->next;
1307         }
1308         if (!found)
1309         {
1310             // Append the oic.wk.d at the start of rt link parameter value.
1311             OCStringLL *dest = (OCStringLL*)OICCalloc (1, sizeof (OCStringLL));
1312             if (!dest)
1313             {
1314                 DeleteDeviceInfo();
1315                 return OC_STACK_NO_MEMORY;
1316             }
1317             dest->value = OICStrdup (OC_RSRVD_RESOURCE_TYPE_DEVICE);
1318             if (!dest->value)
1319             {
1320                 DeleteDeviceInfo();
1321                 return OC_STACK_NO_MEMORY;
1322             }
1323             dest->next = savedDeviceInfo.types;
1324             savedDeviceInfo.types = dest;
1325         }
1326         if(!savedDeviceInfo.types && info.types)
1327         {
1328             DeleteDeviceInfo();
1329             return OC_STACK_NO_MEMORY;
1330         }
1331     }
1332
1333     if (info.specVersion)
1334     {
1335         savedDeviceInfo.specVersion = OICStrdup(info.specVersion);
1336         if(!savedDeviceInfo.specVersion && info.specVersion)
1337         {
1338             DeleteDeviceInfo();
1339             return OC_STACK_NO_MEMORY;
1340         }
1341     }
1342     else
1343     {
1344         savedDeviceInfo.specVersion = OICStrdup(OC_SPEC_VERSION);
1345         if(!savedDeviceInfo.specVersion && OC_SPEC_VERSION)
1346         {
1347             DeleteDeviceInfo();
1348             return OC_STACK_NO_MEMORY;
1349         }
1350     }
1351
1352     if (info.dataModelVersions)
1353     {
1354         savedDeviceInfo.dataModelVersions = CloneOCStringLL(info.dataModelVersions);
1355         if(!savedDeviceInfo.dataModelVersions && info.dataModelVersions)
1356         {
1357             DeleteDeviceInfo();
1358             return OC_STACK_NO_MEMORY;
1359         }
1360     }
1361     else
1362     {
1363         savedDeviceInfo.dataModelVersions = (OCStringLL *)OICCalloc(1,sizeof(OCStringLL));
1364         if (!savedDeviceInfo.dataModelVersions)
1365         {
1366             return OC_STACK_NO_MEMORY;
1367         }
1368         savedDeviceInfo.dataModelVersions->value = OICStrdup(OC_DATA_MODEL_VERSION);
1369         if(!savedDeviceInfo.dataModelVersions->value && OC_DATA_MODEL_VERSION)
1370         {
1371             DeleteDeviceInfo();
1372             return OC_STACK_NO_MEMORY;
1373         }
1374     }
1375
1376     return OC_STACK_OK;
1377 }
1378
1379 OCStackResult SaveDeviceInfo(OCDeviceInfo info)
1380 {
1381     OCStackResult res = OC_STACK_OK;
1382
1383     DeleteDeviceInfo();
1384
1385     res = DeepCopyDeviceInfo(info);
1386
1387     VERIFY_SUCCESS(res, OC_STACK_OK);
1388
1389     if (OCGetServerInstanceIDString() == NULL)
1390     {
1391         OIC_LOG(INFO, TAG, "Device ID generation failed");
1392         res =  OC_STACK_ERROR;
1393         goto exit;
1394     }
1395
1396     OIC_LOG(INFO, TAG, "Device initialized successfully.");
1397     return OC_STACK_OK;
1398
1399 exit:
1400     DeleteDeviceInfo();
1401     return res;
1402 }