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
  29 #ifdef WITH_ARDUINO
  30 #include <string.h>
  31 #else
  32 #include <strings.h>
  33 #endif
  34
  35 #include "ocresource.h"
  36 #include "ocresourcehandler.h"
  37 #include "ocobserve.h"
  38 #include "occollection.h"
  39 #include "oic_malloc.h"
  40 #include "oic_string.h"
  41 #include "logger.h"
  42 #include "cJSON.h"
  43 #include "ocpayload.h"
  44 #include "secureresourcemanager.h"
  45 #include "cacommon.h"
  46 #include "cainterface.h"
  47 #include "rdpayload.h"
  48 #include "ocpayload.h"
  49
  50 #ifdef WITH_RD
  51 #include "rd_server.h"
  52 #endif
  53
  54 #ifdef ROUTING_GATEWAY
  55 #include "routingmanager.h"
  56 #endif
  57
  58 /// Module Name
  59 #define TAG "OIC_RI_RESOURCE"
  60
  61 #define VERIFY_SUCCESS(op, successCode) { if (op != successCode) \
  62             {OIC_LOG_V(FATAL, TAG, "%s failed!!", #op); goto exit;} }
  63
  64 #define VERIFY_NON_NULL(arg, logLevel, retVal) { if (!(arg)) { OIC_LOG((logLevel), \
  65              TAG, #arg " is NULL"); return (retVal); } }
  66
  67 extern OCResource *headResource;
  68 static OCPlatformInfo savedPlatformInfo = {0};
  69 static OCDeviceInfo savedDeviceInfo = {0};
  70
  71 /**
  72  * Prepares a Payload for response.
  73  */
  74 static OCStackResult BuildVirtualResourceResponse(const OCResource *resourcePtr,
  75                                                   OCDiscoveryPayload* payload,
  76                                                   OCDevAddr *endpoint,
  77                                                   bool rdResponse);
  78
  79 //-----------------------------------------------------------------------------
  80 // Default resource entity handler function
  81 //-----------------------------------------------------------------------------
  82 OCEntityHandlerResult defaultResourceEHandler(OCEntityHandlerFlag flag,
  83         OCEntityHandlerRequest * request, void* callbackParam)
  84 {
  85     //TODO ("Implement me!!!!");
  86     // TODO:  remove silence unused param warnings
  87     (void) flag;
  88     (void) request;
  89     (void) callbackParam;
  90     return  OC_EH_OK; // Making sure that the Default EH and the Vendor EH have matching signatures
  91 }
  92
  93 /* This method will retrieve the port at which the secure resource is hosted */
  94 static OCStackResult GetSecurePortInfo(OCDevAddr *endpoint, uint16_t *port)
  95 {
  96     uint16_t p = 0;
  97
  98     if (endpoint->adapter == OC_ADAPTER_IP)
  99     {
 100         if (endpoint->flags & OC_IP_USE_V6)
 101         {
 102             p = caglobals.ip.u6s.port;
 103         }
 104         else if (endpoint->flags & OC_IP_USE_V4)
 105         {
 106             p = caglobals.ip.u4s.port;
 107         }
 108     }
 109
 110     *port = p;
 111     return OC_STACK_OK;
 112 }
 113
 114 #ifdef TCP_ADAPTER
 115 /* This method will retrieve the tcp port */
 116 static OCStackResult GetTCPPortInfo(OCDevAddr *endpoint, uint16_t *port)
 117 {
 118     uint16_t p = 0;
 119
 120     if (endpoint->adapter == OC_ADAPTER_IP)
 121     {
 122         if (endpoint->flags & OC_IP_USE_V4)
 123         {
 124             p = caglobals.tcp.ipv4.port;
 125         }
 126         else if (endpoint->flags & OC_IP_USE_V6)
 127         {
 128             p = caglobals.tcp.ipv6.port;
 129         }
 130     }
 131
 132     *port = p;
 133     return OC_STACK_OK;
 134 }
 135 #endif
 136
 137 /*
 138  * Function will extract 0, 1 or 2 filters from query.
 139  * More than 2 filters or unsupported filters will result in error.
 140  * If both filters are of the same supported type, the 2nd one will be picked.
 141  * Resource and device filters in the SAME query are NOT validated
 142  * and resources will likely not clear filters.
 143  */
 144 static OCStackResult ExtractFiltersFromQuery(char *query, char **filterOne, char **filterTwo)
 145 {
 146
 147     char *key = NULL;
 148     char *value = NULL;
 149     char *restOfQuery = NULL;
 150     int numKeyValuePairsParsed = 0;
 151
 152     *filterOne = NULL;
 153     *filterTwo = NULL;
 154
 155     OIC_LOG_V(INFO, TAG, "Extracting params from %s", query);
 156
 157     char *keyValuePair = strtok_r (query, OC_QUERY_SEPARATOR, &restOfQuery);
 158
 159     while(keyValuePair)
 160     {
 161         if (numKeyValuePairsParsed >= 2)
 162         {
 163             OIC_LOG(ERROR, TAG, "More than 2 queries params in URI.");
 164             return OC_STACK_INVALID_QUERY;
 165         }
 166
 167         key = strtok_r(keyValuePair, OC_KEY_VALUE_DELIMITER, &value);
 168
 169         if (!key || !value)
 170         {
 171             return OC_STACK_INVALID_QUERY;
 172         }
 173         else if (strncasecmp(key, OC_RSRVD_INTERFACE, sizeof(OC_RSRVD_INTERFACE) - 1) == 0)
 174         {
 175             *filterOne = value;     // if
 176         }
 177         else if (strncasecmp(key, OC_RSRVD_RESOURCE_TYPE, sizeof(OC_RSRVD_INTERFACE) - 1) == 0)
 178         {
 179             *filterTwo = value;     // rt
 180         }
 181         else
 182         {
 183             OIC_LOG_V(ERROR, TAG, "Unsupported query key: %s", key);
 184             return OC_STACK_INVALID_QUERY;
 185         }
 186         ++numKeyValuePairsParsed;
 187
 188         keyValuePair = strtok_r(NULL, OC_QUERY_SEPARATOR, &restOfQuery);
 189     }
 190
 191     OIC_LOG_V(INFO, TAG, "Extracted params if: %s and rt: %s.", *filterOne, *filterTwo);
 192     return OC_STACK_OK;
 193 }
 194
 195 static OCVirtualResources GetTypeOfVirtualURI(const char *uriInRequest)
 196 {
 197     if (strcmp(uriInRequest, OC_RSRVD_WELL_KNOWN_URI) == 0)
 198     {
 199         return OC_WELL_KNOWN_URI;
 200     }
 201     else if (strcmp(uriInRequest, OC_RSRVD_DEVICE_URI) == 0)
 202     {
 203         return OC_DEVICE_URI;
 204     }
 205     else if (strcmp(uriInRequest, OC_RSRVD_PLATFORM_URI) == 0)
 206     {
 207         return OC_PLATFORM_URI;
 208     }
 209     else if (strcmp(uriInRequest, OC_RSRVD_RESOURCE_TYPES_URI) == 0)
 210     {
 211         return OC_RESOURCE_TYPES_URI;
 212     }
 213 #ifdef ROUTING_GATEWAY
 214     else if (0 == strcmp(uriInRequest, OC_RSRVD_GATEWAY_URI))
 215     {
 216         return OC_GATEWAY_URI;
 217     }
 218 #endif
 219 #ifdef WITH_PRESENCE
 220     else if (strcmp(uriInRequest, OC_RSRVD_PRESENCE_URI) == 0)
 221     {
 222         return OC_PRESENCE;
 223     }
 224 #endif //WITH_PRESENCE
 225     return OC_UNKNOWN_URI;
 226 }
 227
 228 static OCStackResult getQueryParamsForFiltering (OCVirtualResources uri, char *query,
 229                                             char **filterOne, char **filterTwo)
 230 {
 231     if(!filterOne || !filterTwo)
 232     {
 233         return OC_STACK_INVALID_PARAM;
 234     }
 235
 236     *filterOne = NULL;
 237     *filterTwo = NULL;
 238
 239     #ifdef WITH_PRESENCE
 240     if (uri == OC_PRESENCE)
 241     {
 242         //Nothing needs to be done, except for pass a OC_PRESENCE query through as OC_STACK_OK.
 243         OIC_LOG(INFO, TAG, "OC_PRESENCE Request for virtual resource.");
 244         return OC_STACK_OK;
 245     }
 246     #endif
 247
 248     OCStackResult result = OC_STACK_OK;
 249
 250     if (query && *query)
 251     {
 252         result = ExtractFiltersFromQuery(query, filterOne, filterTwo);
 253     }
 254
 255     return result;
 256 }
 257
 258 OCStackResult BuildResponseRepresentation(const OCResource *resourcePtr,
 259                     OCRepPayload** payload)
 260 {
 261     OCRepPayload *tempPayload = OCRepPayloadCreate();
 262
 263     if (!resourcePtr)
 264     {
 265         OCRepPayloadDestroy(tempPayload);
 266         return OC_STACK_INVALID_PARAM;
 267     }
 268
 269     if(!tempPayload)
 270     {
 271         return OC_STACK_NO_MEMORY;
 272     }
 273
 274     OCRepPayloadSetUri(tempPayload, resourcePtr->uri);
 275
 276     OCResourceType *resType = resourcePtr->rsrcType;
 277     while(resType)
 278     {
 279         OCRepPayloadAddResourceType(tempPayload, resType->resourcetypename);
 280         resType = resType->next;
 281     }
 282
 283     OCResourceInterface *resInterface = resourcePtr->rsrcInterface;
 284     while(resInterface)
 285     {
 286         OCRepPayloadAddInterface(tempPayload, resInterface->name);
 287         resInterface = resInterface->next;
 288     }
 289
 290     OCAttribute *resAttrib = resourcePtr->rsrcAttributes;
 291     while(resAttrib)
 292     {
 293         OCRepPayloadSetPropString(tempPayload, resAttrib->attrName,
 294                                 resAttrib->attrValue);
 295         resAttrib = resAttrib->next;
 296     }
 297
 298     if(!*payload)
 299     {
 300         *payload = tempPayload;
 301     }
 302     else
 303     {
 304         OCRepPayloadAppend(*payload, tempPayload);
 305     }
 306
 307     return OC_STACK_OK;
 308 }
 309
 310 OCStackResult BuildVirtualResourceResponse(const OCResource *resourcePtr,
 311                         OCDiscoveryPayload *payload, OCDevAddr *devAddr, bool rdResponse)
 312 {
 313     if (!resourcePtr || !payload)
 314     {
 315         return OC_STACK_INVALID_PARAM;
 316     }
 317     uint16_t securePort = 0;
 318     if (resourcePtr->resourceProperties & OC_SECURE)
 319     {
 320        if (GetSecurePortInfo(devAddr, &securePort) != OC_STACK_OK)
 321        {
 322            securePort = 0;
 323        }
 324     }
 325
 326     if (rdResponse)
 327     {
 328         securePort = devAddr->port;
 329     }
 330
 331 #ifdef TCP_ADAPTER
 332     uint16_t tcpPort = 0;
 333     if (GetTCPPortInfo(devAddr, &tcpPort) != OC_STACK_OK)
 334     {
 335         tcpPort = 0;
 336     }
 337     OCDiscoveryPayloadAddResource(payload, resourcePtr, securePort, tcpPort);
 338 #else
 339     OCDiscoveryPayloadAddResource(payload, resourcePtr, securePort);
 340 #endif
 341
 342     return OC_STACK_OK;
 343 }
 344
 345 uint8_t IsCollectionResource (OCResource *resource)
 346 {
 347     if(!resource)
 348     {
 349         return 0;
 350     }
 351
 352     if(resource->rsrcChildResourcesHead != NULL)
 353     {
 354         return 1;
 355     }
 356
 357     return 0;
 358 }
 359
 360 OCResource *FindResourceByUri(const char* resourceUri)
 361 {
 362     if(!resourceUri)
 363     {
 364         return NULL;
 365     }
 366
 367     OCResource * pointer = headResource;
 368     while (pointer)
 369     {
 370         if (strcmp(resourceUri, pointer->uri) == 0)
 371         {
 372             return pointer;
 373         }
 374         pointer = pointer->next;
 375     }
 376     OIC_LOG_V(INFO, TAG, "Resource %s not found", resourceUri);
 377     return NULL;
 378 }
 379
 380
 381 OCStackResult DetermineResourceHandling (const OCServerRequest *request,
 382                                          ResourceHandling *handling,
 383                                          OCResource **resource)
 384 {
 385     if(!request || !handling || !resource)
 386     {
 387         return OC_STACK_INVALID_PARAM;
 388     }
 389
 390     OIC_LOG_V(INFO, TAG, "DetermineResourceHandling for %s", request->resourceUrl);
 391
 392     // Check if virtual resource
 393     if (GetTypeOfVirtualURI(request->resourceUrl) != OC_UNKNOWN_URI)
 394     {
 395         OIC_LOG_V (INFO, TAG, "%s is virtual", request->resourceUrl);
 396         *handling = OC_RESOURCE_VIRTUAL;
 397         *resource = headResource;
 398         return OC_STACK_OK;
 399     }
 400     if (strlen((const char*)(request->resourceUrl)) == 0)
 401     {
 402         // Resource URL not specified
 403         *handling = OC_RESOURCE_NOT_SPECIFIED;
 404         return OC_STACK_NO_RESOURCE;
 405     }
 406     else
 407     {
 408         OCResource *resourcePtr = FindResourceByUri((const char*)request->resourceUrl);
 409         *resource = resourcePtr;
 410         if (!resourcePtr)
 411         {
 412             if(defaultDeviceHandler)
 413             {
 414                 *handling = OC_RESOURCE_DEFAULT_DEVICE_ENTITYHANDLER;
 415                 return OC_STACK_OK;
 416             }
 417
 418             // Resource does not exist
 419             // and default device handler does not exist
 420             *handling = OC_RESOURCE_NOT_SPECIFIED;
 421             return OC_STACK_NO_RESOURCE;
 422         }
 423
 424         if (IsCollectionResource (resourcePtr))
 425         {
 426             // Collection resource
 427             if (resourcePtr->entityHandler != defaultResourceEHandler)
 428             {
 429                 *handling = OC_RESOURCE_COLLECTION_WITH_ENTITYHANDLER;
 430                 return OC_STACK_OK;
 431             }
 432             else
 433             {
 434                 *handling = OC_RESOURCE_COLLECTION_DEFAULT_ENTITYHANDLER;
 435                 return OC_STACK_OK;
 436             }
 437         }
 438         else
 439         {
 440             // Resource not a collection
 441             if (resourcePtr->entityHandler != defaultResourceEHandler)
 442             {
 443                 *handling = OC_RESOURCE_NOT_COLLECTION_WITH_ENTITYHANDLER;
 444                 return OC_STACK_OK;
 445             }
 446             else
 447             {
 448                 *handling = OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER;
 449                 return OC_STACK_OK;
 450             }
 451         }
 452     }
 453 }
 454
 455 OCStackResult EntityHandlerCodeToOCStackCode(OCEntityHandlerResult ehResult)
 456 {
 457     OCStackResult result;
 458
 459     switch (ehResult)
 460     {
 461         case OC_EH_OK:
 462             result = OC_STACK_OK;
 463             break;
 464         case OC_EH_SLOW:
 465             result = OC_STACK_SLOW_RESOURCE;
 466             break;
 467         case OC_EH_ERROR:
 468             result = OC_STACK_ERROR;
 469             break;
 470         case OC_EH_FORBIDDEN:
 471             result = OC_STACK_RESOURCE_ERROR;
 472             break;
 473         case OC_EH_RESOURCE_CREATED:
 474             result = OC_STACK_RESOURCE_CREATED;
 475             break;
 476         case OC_EH_RESOURCE_DELETED:
 477             result = OC_STACK_RESOURCE_DELETED;
 478             break;
 479         case OC_EH_RESOURCE_NOT_FOUND:
 480             result = OC_STACK_NO_RESOURCE;
 481             break;
 482         default:
 483             result = OC_STACK_ERROR;
 484     }
 485
 486     return result;
 487 }
 488
 489 static bool resourceMatchesRTFilter(OCResource *resource, char *resourceTypeFilter)
 490 {
 491     if (!resource)
 492     {
 493         return false;
 494     }
 495
 496     // Null or empty is analogous to no filter.
 497     if (resourceTypeFilter == NULL || *resourceTypeFilter == 0)
 498     {
 499         return true;
 500     }
 501
 502     OCResourceType *resourceTypePtr = resource->rsrcType;
 503
 504     while (resourceTypePtr)
 505     {
 506         if (strcmp (resourceTypePtr->resourcetypename, resourceTypeFilter) == 0)
 507         {
 508             return true;
 509         }
 510         resourceTypePtr = resourceTypePtr->next;
 511     }
 512
 513     OIC_LOG_V(INFO, TAG, "%s does not contain rt=%s.", resource->uri, resourceTypeFilter);
 514     return false;
 515 }
 516
 517 static bool resourceMatchesIFFilter(OCResource *resource, char *interfaceFilter)
 518 {
 519     if (!resource)
 520     {
 521         return false;
 522     }
 523
 524     // Null or empty is analogous to no filter.
 525     if (interfaceFilter == NULL || *interfaceFilter == 0)
 526     {
 527         return true;
 528     }
 529
 530     OCResourceInterface *interfacePtr = resource->rsrcInterface;
 531
 532     while (interfacePtr)
 533     {
 534         if ((strcmp (interfacePtr->name, interfaceFilter) == 0) &&
 535             (strcmp (OC_RSRVD_INTERFACE_LL, interfaceFilter) == 0 ||
 536              strcmp (OC_RSRVD_INTERFACE_DEFAULT, interfaceFilter) == 0))
 537         {
 538             return true;
 539         }
 540         interfacePtr = interfacePtr->next;
 541     }
 542
 543     OIC_LOG_V(INFO, TAG, "%s does not contain if=%s.", resource->uri, interfaceFilter);
 544     return false;
 545 }
 546
 547 /*
 548  * If the filters are null, they will be assumed to NOT be present
 549  * and the resource will not be matched against them.
 550  * Function will return true if all non null AND non empty filters passed in find a match.
 551  */
 552 static bool includeThisResourceInResponse(OCResource *resource,
 553                                           char *interfaceFilter,
 554                                           char *resourceTypeFilter)
 555 {
 556     if (!resource)
 557     {
 558         OIC_LOG(ERROR, TAG, "Invalid resource");
 559         return false;
 560     }
 561
 562     if (resource->resourceProperties & OC_EXPLICIT_DISCOVERABLE)
 563     {
 564         /*
 565          * At least one valid filter should be available to
 566          * include the resource in discovery response
 567          */
 568         if (!(resourceTypeFilter && *resourceTypeFilter))
 569         {
 570             OIC_LOG_V(INFO, TAG, "%s no query string for EXPLICIT_DISCOVERABLE \
 571                 resource", resource->uri);
 572             return false;
 573         }
 574     }
 575     else if ( !(resource->resourceProperties & OC_ACTIVE) ||
 576          !(resource->resourceProperties & OC_DISCOVERABLE))
 577     {
 578         OIC_LOG_V(INFO, TAG, "%s not ACTIVE or DISCOVERABLE", resource->uri);
 579         return false;
 580     }
 581
 582     return resourceMatchesIFFilter(resource, interfaceFilter) &&
 583            resourceMatchesRTFilter(resource, resourceTypeFilter);
 584
 585 }
 586
 587 OCStackResult SendNonPersistantDiscoveryResponse(OCServerRequest *request, OCResource *resource,
 588                                 OCPayload *discoveryPayload, OCEntityHandlerResult ehResult)
 589 {
 590     OCEntityHandlerResponse response = {0};
 591
 592     response.ehResult = ehResult;
 593     response.payload = discoveryPayload;
 594     response.persistentBufferFlag = 0;
 595     response.requestHandle = (OCRequestHandle) request;
 596     response.resourceHandle = (OCResourceHandle) resource;
 597
 598     return OCDoResponse(&response);
 599 }
 600
 601 #ifdef WITH_RD
 602 static OCStackResult checkResourceExistsAtRD(const char *interfaceType, const char *resourceType,
 603      OCResource **payload, OCDevAddr *devAddr)
 604 {
 605     OCResourceCollectionPayload *repPayload;
 606     if (!payload)
 607     {
 608         return OC_STACK_ERROR;
 609     }
 610     if (OCRDCheckPublishedResource(interfaceType, resourceType, &repPayload, devAddr) == OC_STACK_OK)
 611     {
 612         if (!repPayload)
 613         {
 614             return OC_STACK_ERROR;
 615         }
 616         OCResource *ptr = ((OCResource *) OICCalloc(1, sizeof(OCResource)));
 617         if (!ptr)
 618         {
 619            return OC_STACK_NO_MEMORY;
 620         }
 621
 622         ptr->uri = OICStrdup(repPayload->setLinks->href);
 623         if (!ptr->uri)
 624         {
 625            return OC_STACK_NO_MEMORY;
 626         }
 627         OCStringLL *rt = repPayload->setLinks->rt;
 628         while (rt)
 629         {
 630             OCResourceType *temp = (OCResourceType *) OICCalloc(1, sizeof(OCResourceType));
 631             if(!temp)
 632             {
 633                 OICFree(ptr->uri);
 634                 return OC_STACK_NO_MEMORY;
 635             }
 636             temp->next = NULL;
 637             temp->resourcetypename = OICStrdup(rt->value);
 638             if (!ptr->rsrcType)
 639             {
 640                 ptr->rsrcType = temp;
 641             }
 642             else
 643             {
 644                 OCResourceType *type = ptr->rsrcType;
 645                 while (type->next)
 646                 {
 647                     type = type->next;
 648                 }
 649                 type->next = temp;
 650             }
 651             rt = rt->next;
 652         }
 653
 654         OCStringLL *itf = repPayload->setLinks->itf;
 655         while (itf)
 656         {
 657             OCResourceInterface *temp = (OCResourceInterface *) OICCalloc(1, sizeof(OCResourceInterface));
 658             if (!temp)
 659             {
 660                 OICFree(ptr->uri);
 661
 662                 return OC_STACK_NO_MEMORY;
 663             }
 664             temp->next = NULL;
 665             temp->name = OICStrdup(itf->value);
 666             if (!ptr->rsrcInterface)
 667             {
 668                 ptr->rsrcInterface = temp;
 669             }
 670             else
 671             {
 672                 OCResourceInterface *type = ptr->rsrcInterface;
 673                 while (type->next)
 674                 {
 675                     type = type->next;
 676                 }
 677                 type->next = temp;
 678             }
 679             itf = itf->next;
 680         }
 681
 682         ptr->resourceProperties = (OCResourceProperty) repPayload->tags->bitmap;
 683
 684         OCFreeCollectionResource(repPayload);
 685         *payload = ptr;
 686         return OC_STACK_OK;
 687     }
 688     else
 689     {
 690         OIC_LOG_V(ERROR, TAG, "The resource type or interface type doe not exist \
 691                              on the resource directory");
 692     }
 693     return OC_STACK_ERROR;
 694 }
 695 #endif
 696
 697 static OCStackResult HandleVirtualResource (OCServerRequest *request, OCResource* resource)
 698 {
 699     if (!request || !resource)
 700     {
 701         return OC_STACK_INVALID_PARAM;
 702     }
 703
 704     OCStackResult discoveryResult = OC_STACK_ERROR;
 705
 706     bool bMulticast    = false;     // Was the discovery request a multicast request?
 707     OCPayload* payload = NULL;
 708
 709     OIC_LOG(INFO, TAG, "Entering HandleVirtualResource");
 710
 711     OCVirtualResources virtualUriInRequest = GetTypeOfVirtualURI (request->resourceUrl);
 712
 713     // Step 1: Generate the response to discovery request
 714     if (virtualUriInRequest == OC_WELL_KNOWN_URI)
 715     {
 716         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 717         {
 718             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 719             return OC_STACK_UNAUTHORIZED_REQ;
 720         }
 721
 722         char *interfaceQuery = NULL;
 723         char *resourceTypeQuery = NULL;
 724
 725         discoveryResult = getQueryParamsForFiltering (virtualUriInRequest, request->query,
 726                 &interfaceQuery, &resourceTypeQuery);
 727         bool interfaceQueryAllocated = false;
 728         if (!interfaceQuery && !resourceTypeQuery)
 729         {
 730             interfaceQueryAllocated = true;
 731             interfaceQuery = OICStrdup(OC_RSRVD_INTERFACE_LL);
 732         }
 733
 734         if (discoveryResult == OC_STACK_OK)
 735         {
 736             payload = (OCPayload *)OCDiscoveryPayloadCreate();
 737
 738             if (payload)
 739             {
 740                 OCDiscoveryPayload *discPayload = (OCDiscoveryPayload *)payload;
 741                 discPayload->sid = (char *)OICCalloc(1, UUID_STRING_SIZE);
 742                 VERIFY_NON_NULL(discPayload->sid, ERROR, OC_STACK_NO_MEMORY);
 743
 744                 const char* uid = OCGetServerInstanceIDString();
 745                 if (uid)
 746                 {
 747                     memcpy(discPayload->sid, uid, UUID_STRING_SIZE);
 748                 }
 749
 750                 if (!resourceTypeQuery && interfaceQuery && (0 == strcmp(interfaceQuery, OC_RSRVD_INTERFACE_LL)))
 751                 {
 752                     for (; resource && discoveryResult == OC_STACK_OK; resource = resource->next)
 753                     {
 754                         bool result = false;
 755                         if (resource->resourceProperties & OC_DISCOVERABLE)
 756                         {
 757                             result = true;
 758                         }
 759
 760                         if (result)
 761                         {
 762                             discoveryResult = BuildVirtualResourceResponse(resource,
 763                             discPayload, &request->devAddr, false);
 764                         }
 765                     }
 766                 }
 767                 else
 768                 {
 769                     if (interfaceQuery && (0 != strcmp(interfaceQuery, OC_RSRVD_INTERFACE_LL)))
 770                     {
 771                         discPayload->uri = OICStrdup(OC_RSRVD_WELL_KNOWN_URI);
 772                         VERIFY_NON_NULL(discPayload->uri, ERROR, OC_STACK_NO_MEMORY);
 773                         if (savedDeviceInfo.deviceName)
 774                         {
 775                             discPayload->name = OICStrdup(savedDeviceInfo.deviceName);
 776                             VERIFY_NON_NULL(discPayload->name, ERROR, OC_STACK_NO_MEMORY);
 777                         }
 778                         discPayload->type = (OCStringLL*)OICCalloc(1, sizeof(OCStringLL));
 779                         VERIFY_NON_NULL(discPayload->type, ERROR, OC_STACK_NO_MEMORY);
 780                         discPayload->type->value = OICStrdup(OC_RSRVD_RESOURCE_TYPE_RES);
 781                         VERIFY_NON_NULL(discPayload->type->value, ERROR, OC_STACK_NO_MEMORY);
 782                         OCResourcePayloadAddStringLL(&discPayload->interface, OC_RSRVD_INTERFACE_LL);
 783                         OCResourcePayloadAddStringLL(&discPayload->interface, OC_RSRVD_INTERFACE_DEFAULT);
 784                         VERIFY_NON_NULL(discPayload->interface, ERROR, OC_STACK_NO_MEMORY);
 785                     }
 786                     bool foundResourceAtRD = false;
 787                     for (;resource && discoveryResult == OC_STACK_OK; resource = resource->next)
 788                     {
 789 #ifdef WITH_RD
 790                         if (strcmp(resource->uri, OC_RSRVD_RD_URI) == 0)
 791                         {
 792                             OCResource *resource1 = NULL;
 793                             OCDevAddr devAddr;
 794                             discoveryResult = checkResourceExistsAtRD(interfaceQuery,
 795                                 resourceTypeQuery, &resource1, &devAddr);
 796                             if (discoveryResult != OC_STACK_OK)
 797                             {
 798                                  break;
 799                             }
 800                             discoveryResult = BuildVirtualResourceResponse(resource1,
 801                                 discPayload, &devAddr, true);
 802                             if (payload)
 803                             {
 804                                 discPayload->baseURI = OICStrdup(devAddr.addr);
 805                             }
 806                             OICFree(resource1->uri);
 807                             for (OCResourceType *rsrcRt = resource1->rsrcType, *rsrcRtNext = NULL; rsrcRt; )
 808                             {
 809                                 rsrcRtNext = rsrcRt->next;
 810                                 OICFree(rsrcRt->resourcetypename);
 811                                 OICFree(rsrcRt);
 812                                 rsrcRt = rsrcRtNext;
 813                             }
 814
 815                             for (OCResourceInterface *rsrcPtr = resource1->rsrcInterface, *rsrcNext = NULL; rsrcPtr; )
 816                             {
 817                                 rsrcNext = rsrcPtr->next;
 818                                 OICFree(rsrcPtr->name);
 819                                 OICFree(rsrcPtr);
 820                                 rsrcPtr = rsrcNext;
 821                             }
 822                             foundResourceAtRD = true;
 823                         }
 824 #endif
 825                         if (!foundResourceAtRD && includeThisResourceInResponse(resource, interfaceQuery, resourceTypeQuery))
 826                         {
 827                             discoveryResult = BuildVirtualResourceResponse(resource,
 828                                 discPayload, &request->devAddr, false);
 829                         }
 830                     }
 831                     // Set discoveryResult appropriately if no 'valid' resources are available
 832                     if (discPayload->resources == NULL && !foundResourceAtRD)
 833                     {
 834                         discoveryResult = OC_STACK_NO_RESOURCE;
 835                     }
 836                 }
 837             }
 838             else
 839             {
 840                 discoveryResult = OC_STACK_NO_MEMORY;
 841             }
 842         }
 843         else
 844         {
 845             OIC_LOG_V(ERROR, TAG, "Error (%d) parsing query.", discoveryResult);
 846         }
 847         if (interfaceQueryAllocated)
 848         {
 849             OICFree(interfaceQuery);
 850         }
 851     }
 852     else if (virtualUriInRequest == OC_DEVICE_URI)
 853     {
 854         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 855         {
 856             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 857             return OC_STACK_UNAUTHORIZED_REQ;
 858         }
 859
 860         const char* deviceId = OCGetServerInstanceIDString();
 861         if (!deviceId)
 862         {
 863             discoveryResult = OC_STACK_ERROR;
 864         }
 865         else
 866         {
 867             char *dataModelVersions = OCCreateString(savedDeviceInfo.dataModelVersions);
 868             if (!dataModelVersions)
 869             {
 870                 discoveryResult = OC_STACK_NO_MEMORY;
 871             }
 872             else
 873             {
 874                 payload = (OCPayload*) OCDevicePayloadCreate(deviceId, savedDeviceInfo.deviceName,
 875                     savedDeviceInfo.types, savedDeviceInfo.specVersion, dataModelVersions);
 876                 if (!payload)
 877                 {
 878                      discoveryResult = OC_STACK_NO_MEMORY;
 879                 }
 880                 else
 881                 {
 882                      discoveryResult = OC_STACK_OK;
 883                 }
 884                 OICFree(dataModelVersions);
 885             }
 886         }
 887     }
 888     else if (virtualUriInRequest == OC_PLATFORM_URI)
 889     {
 890         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 891         {
 892             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 893             return OC_STACK_UNAUTHORIZED_REQ;
 894         }
 895
 896         payload = (OCPayload*)OCPlatformPayloadCreate(&savedPlatformInfo);
 897         if (!payload)
 898         {
 899             discoveryResult = OC_STACK_NO_MEMORY;
 900         }
 901         else
 902         {
 903             discoveryResult = OC_STACK_OK;
 904         }
 905     }
 906 #ifdef ROUTING_GATEWAY
 907     else if (OC_GATEWAY_URI == virtualUriInRequest)
 908     {
 909         // Received request for a gateway
 910         OIC_LOG(INFO, TAG, "Request is for Gateway Virtual Request");
 911         discoveryResult = RMHandleGatewayRequest(request, resource);
 912
 913     }
 914 #endif
 915
 916     /**
 917      * Step 2: Send the discovery response
 918      *
 919      * Iotivity should respond to discovery requests in below manner:
 920      * 1)If query filter matching fails and discovery request is multicast,
 921      *   it should NOT send any response.
 922      * 2)If query filter matching fails and discovery request is unicast,
 923      *   it should send an error(RESOURCE_NOT_FOUND - 404) response.
 924      * 3)If Server does not have any 'DISCOVERABLE' resources and discovery
 925      *   request is multicast, it should NOT send any response.
 926      * 4)If Server does not have any 'DISCOVERABLE' resources and discovery
 927      *   request is unicast, it should send an error(RESOURCE_NOT_FOUND - 404) response.
 928      */
 929
 930 #ifdef WITH_PRESENCE
 931     if ((virtualUriInRequest == OC_PRESENCE) &&
 932         (resource->resourceProperties & OC_ACTIVE))
 933     {
 934         // Presence uses observer notification api to respond via SendPresenceNotification.
 935         SendPresenceNotification(resource->rsrcType, OC_PRESENCE_TRIGGER_CHANGE);
 936     }
 937     else
 938     #endif
 939 #ifdef ROUTING_GATEWAY
 940     // Gateway uses the RMHandleGatewayRequest to respond to the request.
 941     if (OC_GATEWAY_URI != virtualUriInRequest)
 942 #endif
 943     {
 944         if(discoveryResult == OC_STACK_OK)
 945         {
 946             SendNonPersistantDiscoveryResponse(request, resource, payload, OC_EH_OK);
 947         }
 948         else if(bMulticast == false && (request->devAddr.adapter != OC_ADAPTER_RFCOMM_BTEDR) &&
 949                (request->devAddr.adapter != OC_ADAPTER_GATT_BTLE))
 950         {
 951             OIC_LOG_V(ERROR, TAG, "Sending a (%d) error to (%d)  \
 952                 discovery request", discoveryResult, virtualUriInRequest);
 953             SendNonPersistantDiscoveryResponse(request, resource, NULL,
 954                 (discoveryResult == OC_STACK_NO_RESOURCE) ? OC_EH_RESOURCE_NOT_FOUND : OC_EH_ERROR);
 955         }
 956         else
 957         {
 958             // Ignoring the discovery request as per RFC 7252, Section #8.2
 959             OIC_LOG(INFO, TAG, "Silently ignoring the request since device does not have \
 960                 any useful data to send");
 961         }
 962     }
 963
 964     OCPayloadDestroy(payload);
 965
 966     return OC_STACK_OK;
 967 }
 968
 969 static OCStackResult
 970 HandleDefaultDeviceEntityHandler (OCServerRequest *request)
 971 {
 972     if(!request)
 973     {
 974         return OC_STACK_INVALID_PARAM;
 975     }
 976
 977     OCStackResult result = OC_STACK_OK;
 978     OCEntityHandlerResult ehResult = OC_EH_ERROR;
 979     OCEntityHandlerRequest ehRequest = {0};
 980
 981     OIC_LOG(INFO, TAG, "Entering HandleResourceWithDefaultDeviceEntityHandler");
 982     result = FormOCEntityHandlerRequest(&ehRequest,
 983                                         (OCRequestHandle) request,
 984                                         request->method,
 985                                         &request->devAddr,
 986                                         (OCResourceHandle) NULL, request->query,
 987                                         PAYLOAD_TYPE_REPRESENTATION,
 988                                         request->payload,
 989                                         request->payloadSize,
 990                                         request->numRcvdVendorSpecificHeaderOptions,
 991                                         request->rcvdVendorSpecificHeaderOptions,
 992                                         (OCObserveAction)request->observationOption,
 993                                         (OCObservationId)0,
 994                                         request->coapID);
 995     VERIFY_SUCCESS(result, OC_STACK_OK);
 996
 997     // At this point we know for sure that defaultDeviceHandler exists
 998     ehResult = defaultDeviceHandler(OC_REQUEST_FLAG, &ehRequest,
 999                                   (char*) request->resourceUrl, defaultDeviceHandlerCallbackParameter);
1000     if(ehResult == OC_EH_SLOW)
1001     {
1002         OIC_LOG(INFO, TAG, "This is a slow resource");
1003         request->slowFlag = 1;
1004     }
1005     else if(ehResult == OC_EH_ERROR)
1006     {
1007         FindAndDeleteServerRequest(request);
1008     }
1009     result = EntityHandlerCodeToOCStackCode(ehResult);
1010 exit:
1011     OCPayloadDestroy(ehRequest.payload);
1012     return result;
1013 }
1014
1015 static OCStackResult
1016 HandleResourceWithEntityHandler (OCServerRequest *request,
1017                                  OCResource *resource,
1018                                  uint8_t collectionResource)
1019 {
1020     if(!request || ! resource)
1021     {
1022         return OC_STACK_INVALID_PARAM;
1023     }
1024
1025     OCStackResult result = OC_STACK_ERROR;
1026     OCEntityHandlerResult ehResult = OC_EH_ERROR;
1027     OCEntityHandlerFlag ehFlag = OC_REQUEST_FLAG;
1028     ResourceObserver *resObs = NULL;
1029
1030     OCEntityHandlerRequest ehRequest = {0};
1031
1032     OIC_LOG(INFO, TAG, "Entering HandleResourceWithEntityHandler");
1033     OCPayloadType type = PAYLOAD_TYPE_REPRESENTATION;
1034     // check the security resource
1035     if (request && request->resourceUrl && SRMIsSecurityResourceURI(request->resourceUrl))
1036     {
1037         type = PAYLOAD_TYPE_SECURITY;
1038
1039     }
1040
1041     if (request && strcmp(request->resourceUrl, OC_RSRVD_RD_URI) == 0)
1042     {
1043         type = PAYLOAD_TYPE_RD;
1044     }
1045
1046     result = FormOCEntityHandlerRequest(&ehRequest,
1047                                         (OCRequestHandle)request,
1048                                         request->method,
1049                                         &request->devAddr,
1050                                         (OCResourceHandle)resource,
1051                                         request->query,
1052                                         type,
1053                                         request->payload,
1054                                         request->payloadSize,
1055                                         request->numRcvdVendorSpecificHeaderOptions,
1056                                         request->rcvdVendorSpecificHeaderOptions,
1057                                         (OCObserveAction)request->observationOption,
1058                                         0,
1059                                         request->coapID);
1060     VERIFY_SUCCESS(result, OC_STACK_OK);
1061
1062     if(ehRequest.obsInfo.action == OC_OBSERVE_NO_OPTION)
1063     {
1064         OIC_LOG(INFO, TAG, "No observation requested");
1065         ehFlag = OC_REQUEST_FLAG;
1066     }
1067     else if(ehRequest.obsInfo.action == OC_OBSERVE_REGISTER && !collectionResource)
1068     {
1069         OIC_LOG(INFO, TAG, "Observation registration requested");
1070
1071         ResourceObserver *obs = GetObserverUsingToken (request->requestToken,
1072                                     request->tokenLength);
1073
1074         if (obs)
1075         {
1076             OIC_LOG (INFO, TAG, "Observer with this token already present");
1077             OIC_LOG (INFO, TAG, "Possibly re-transmitted CON OBS request");
1078             OIC_LOG (INFO, TAG, "Not adding observer. Not responding to client");
1079             OIC_LOG (INFO, TAG, "The first request for this token is already ACKED.");
1080
1081             // server requests are usually free'd when the response is sent out
1082             // for the request in ocserverrequest.c : HandleSingleResponse()
1083             // Since we are making an early return and not responding, the server request
1084             // needs to be deleted.
1085             FindAndDeleteServerRequest (request);
1086             return OC_STACK_OK;
1087         }
1088
1089         result = GenerateObserverId(&ehRequest.obsInfo.obsId);
1090         VERIFY_SUCCESS(result, OC_STACK_OK);
1091
1092         result = AddObserver ((const char*)(request->resourceUrl),
1093                 (const char *)(request->query),
1094                 ehRequest.obsInfo.obsId, request->requestToken, request->tokenLength,
1095                 resource, request->qos, request->acceptFormat,
1096                 &request->devAddr);
1097
1098         if(result == OC_STACK_OK)
1099         {
1100             OIC_LOG(INFO, TAG, "Added observer successfully");
1101             request->observeResult = OC_STACK_OK;
1102             ehFlag = (OCEntityHandlerFlag)(OC_REQUEST_FLAG | OC_OBSERVE_FLAG);
1103         }
1104         else
1105         {
1106             result = OC_STACK_OK;
1107
1108             // The error in observeResult for the request will be used when responding to this
1109             // request by omitting the observation option/sequence number.
1110             request->observeResult = OC_STACK_ERROR;
1111             OIC_LOG(ERROR, TAG, "Observer Addition failed");
1112             ehFlag = OC_REQUEST_FLAG;
1113         }
1114
1115     }
1116     else if(ehRequest.obsInfo.action == OC_OBSERVE_DEREGISTER &&
1117             !collectionResource)
1118     {
1119         OIC_LOG(INFO, TAG, "Deregistering observation requested");
1120
1121         resObs = GetObserverUsingToken (request->requestToken, request->tokenLength);
1122
1123         if (NULL == resObs)
1124         {
1125             // Stack does not contain this observation request
1126             // Either token is incorrect or observation list is corrupted
1127             result = OC_STACK_ERROR;
1128             goto exit;
1129         }
1130         ehRequest.obsInfo.obsId = resObs->observeId;
1131         ehFlag = (OCEntityHandlerFlag)(ehFlag | OC_OBSERVE_FLAG);
1132
1133         result = DeleteObserverUsingToken (request->requestToken, request->tokenLength);
1134
1135         if(result == OC_STACK_OK)
1136         {
1137             OIC_LOG(INFO, TAG, "Removed observer successfully");
1138             request->observeResult = OC_STACK_OK;
1139         }
1140         else
1141         {
1142             result = OC_STACK_OK;
1143             request->observeResult = OC_STACK_ERROR;
1144             OIC_LOG(ERROR, TAG, "Observer Removal failed");
1145         }
1146     }
1147     else
1148     {
1149         result = OC_STACK_ERROR;
1150         goto exit;
1151     }
1152
1153     ehResult = resource->entityHandler(ehFlag, &ehRequest, resource->entityHandlerCallbackParam);
1154     if(ehResult == OC_EH_SLOW)
1155     {
1156         OIC_LOG(INFO, TAG, "This is a slow resource");
1157         request->slowFlag = 1;
1158     }
1159     else if(ehResult == OC_EH_ERROR)
1160     {
1161         FindAndDeleteServerRequest(request);
1162     }
1163     result = EntityHandlerCodeToOCStackCode(ehResult);
1164 exit:
1165     OCPayloadDestroy(ehRequest.payload);
1166     return result;
1167 }
1168
1169 static OCStackResult
1170 HandleCollectionResourceDefaultEntityHandler (OCServerRequest *request,
1171                                               OCResource *resource)
1172 {
1173     if(!request || !resource)
1174     {
1175         return OC_STACK_INVALID_PARAM;
1176     }
1177
1178     OCStackResult result = OC_STACK_ERROR;
1179     OCEntityHandlerRequest ehRequest = {0};
1180
1181     result = FormOCEntityHandlerRequest(&ehRequest,
1182                                         (OCRequestHandle)request,
1183                                         request->method,
1184                                         &request->devAddr,
1185                                         (OCResourceHandle)resource,
1186                                         request->query,
1187                                         PAYLOAD_TYPE_REPRESENTATION,
1188                                         request->payload,
1189                                         request->payloadSize,
1190                                         request->numRcvdVendorSpecificHeaderOptions,
1191                                         request->rcvdVendorSpecificHeaderOptions,
1192                                         (OCObserveAction)request->observationOption,
1193                                         (OCObservationId)0,
1194                                         request->coapID);
1195     if(result == OC_STACK_OK)
1196     {
1197         result = DefaultCollectionEntityHandler (OC_REQUEST_FLAG, &ehRequest);
1198     }
1199
1200     OCPayloadDestroy(ehRequest.payload);
1201     return result;
1202 }
1203
1204 OCStackResult
1205 ProcessRequest(ResourceHandling resHandling, OCResource *resource, OCServerRequest *request)
1206 {
1207     OCStackResult ret = OC_STACK_OK;
1208
1209     switch (resHandling)
1210     {
1211         case OC_RESOURCE_VIRTUAL:
1212         {
1213             ret = HandleVirtualResource (request, resource);
1214             break;
1215         }
1216         case OC_RESOURCE_DEFAULT_DEVICE_ENTITYHANDLER:
1217         {
1218             ret = HandleDefaultDeviceEntityHandler(request);
1219             break;
1220         }
1221         case OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER:
1222         {
1223             OIC_LOG(INFO, TAG, "OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER");
1224             return OC_STACK_ERROR;
1225         }
1226         case OC_RESOURCE_NOT_COLLECTION_WITH_ENTITYHANDLER:
1227         {
1228             ret = HandleResourceWithEntityHandler (request, resource, 0);
1229             break;
1230         }
1231         case OC_RESOURCE_COLLECTION_WITH_ENTITYHANDLER:
1232         {
1233             ret = HandleResourceWithEntityHandler (request, resource, 1);
1234             break;
1235         }
1236         case OC_RESOURCE_COLLECTION_DEFAULT_ENTITYHANDLER:
1237         {
1238             ret = HandleCollectionResourceDefaultEntityHandler (request, resource);
1239             break;
1240         }
1241         case OC_RESOURCE_NOT_SPECIFIED:
1242         {
1243             ret = OC_STACK_NO_RESOURCE;
1244             break;
1245         }
1246         default:
1247         {
1248             OIC_LOG(INFO, TAG, "Invalid Resource Determination");
1249             return OC_STACK_ERROR;
1250         }
1251     }
1252     return ret;
1253 }
1254
1255 void DeletePlatformInfo()
1256 {
1257     OIC_LOG(INFO, TAG, "Deleting platform info.");
1258
1259     OICFree(savedPlatformInfo.platformID);
1260     savedPlatformInfo.platformID = NULL;
1261
1262     OICFree(savedPlatformInfo.manufacturerName);
1263     savedPlatformInfo.manufacturerName = NULL;
1264
1265     OICFree(savedPlatformInfo.manufacturerUrl);
1266     savedPlatformInfo.manufacturerUrl = NULL;
1267
1268     OICFree(savedPlatformInfo.modelNumber);
1269     savedPlatformInfo.modelNumber = NULL;
1270
1271     OICFree(savedPlatformInfo.dateOfManufacture);
1272     savedPlatformInfo.dateOfManufacture = NULL;
1273
1274     OICFree(savedPlatformInfo.platformVersion);
1275     savedPlatformInfo.platformVersion = NULL;
1276
1277     OICFree(savedPlatformInfo.operatingSystemVersion);
1278     savedPlatformInfo.operatingSystemVersion = NULL;
1279
1280     OICFree(savedPlatformInfo.hardwareVersion);
1281     savedPlatformInfo.hardwareVersion = NULL;
1282
1283     OICFree(savedPlatformInfo.firmwareVersion);
1284     savedPlatformInfo.firmwareVersion = NULL;
1285
1286     OICFree(savedPlatformInfo.supportUrl);
1287     savedPlatformInfo.supportUrl = NULL;
1288
1289     OICFree(savedPlatformInfo.systemTime);
1290     savedPlatformInfo.systemTime = NULL;
1291 }
1292
1293 static OCStackResult DeepCopyPlatFormInfo(OCPlatformInfo info)
1294 {
1295     savedPlatformInfo.platformID = OICStrdup(info.platformID);
1296     savedPlatformInfo.manufacturerName = OICStrdup(info.manufacturerName);
1297     savedPlatformInfo.manufacturerUrl = OICStrdup(info.manufacturerUrl);
1298     savedPlatformInfo.modelNumber = OICStrdup(info.modelNumber);
1299     savedPlatformInfo.dateOfManufacture = OICStrdup(info.dateOfManufacture);
1300     savedPlatformInfo.platformVersion = OICStrdup(info.platformVersion);
1301     savedPlatformInfo.operatingSystemVersion = OICStrdup(info.operatingSystemVersion);
1302     savedPlatformInfo.hardwareVersion = OICStrdup(info.hardwareVersion);
1303     savedPlatformInfo.firmwareVersion = OICStrdup(info.firmwareVersion);
1304     savedPlatformInfo.supportUrl = OICStrdup(info.supportUrl);
1305     savedPlatformInfo.systemTime = OICStrdup(info.systemTime);
1306
1307     if ((!savedPlatformInfo.platformID && info.platformID)||
1308         (!savedPlatformInfo.manufacturerName && info.manufacturerName)||
1309         (!savedPlatformInfo.manufacturerUrl && info.manufacturerUrl)||
1310         (!savedPlatformInfo.modelNumber && info.modelNumber)||
1311         (!savedPlatformInfo.dateOfManufacture && info.dateOfManufacture)||
1312         (!savedPlatformInfo.platformVersion && info.platformVersion)||
1313         (!savedPlatformInfo.operatingSystemVersion && info.operatingSystemVersion)||
1314         (!savedPlatformInfo.hardwareVersion && info.hardwareVersion)||
1315         (!savedPlatformInfo.firmwareVersion && info.firmwareVersion)||
1316         (!savedPlatformInfo.supportUrl && info.supportUrl)||
1317         (!savedPlatformInfo.systemTime && info.systemTime))
1318     {
1319         DeletePlatformInfo();
1320         return OC_STACK_INVALID_PARAM;
1321     }
1322
1323     return OC_STACK_OK;
1324
1325 }
1326
1327 OCStackResult SavePlatformInfo(OCPlatformInfo info)
1328 {
1329     DeletePlatformInfo();
1330
1331     OCStackResult res = DeepCopyPlatFormInfo(info);
1332
1333     if (res != OC_STACK_OK)
1334     {
1335         OIC_LOG_V(ERROR, TAG, "Failed to save platform info. errno(%d)", res);
1336     }
1337     else
1338     {
1339         OIC_LOG(INFO, TAG, "Platform info saved.");
1340     }
1341
1342     return res;
1343 }
1344
1345 void DeleteDeviceInfo()
1346 {
1347     OIC_LOG(INFO, TAG, "Deleting device info.");
1348
1349     OICFree(savedDeviceInfo.deviceName);
1350     OCFreeOCStringLL(savedDeviceInfo.types);
1351     OICFree(savedDeviceInfo.specVersion);
1352     OCFreeOCStringLL(savedDeviceInfo.dataModelVersions);
1353     savedDeviceInfo.deviceName = NULL;
1354     savedDeviceInfo.specVersion = NULL;
1355     savedDeviceInfo.dataModelVersions = NULL;
1356 }
1357
1358 static OCStackResult DeepCopyDeviceInfo(OCDeviceInfo info)
1359 {
1360     savedDeviceInfo.deviceName = OICStrdup(info.deviceName);
1361
1362     if(!savedDeviceInfo.deviceName && info.deviceName)
1363     {
1364         DeleteDeviceInfo();
1365         return OC_STACK_NO_MEMORY;
1366     }
1367
1368     if (info.types)
1369     {
1370         savedDeviceInfo.types = CloneOCStringLL(info.types);
1371         if(!savedDeviceInfo.types && info.types)
1372         {
1373             DeleteDeviceInfo();
1374             return OC_STACK_NO_MEMORY;
1375         }
1376     }
1377
1378     if (info.specVersion)
1379     {
1380         savedDeviceInfo.specVersion = OICStrdup(info.specVersion);
1381         if(!savedDeviceInfo.specVersion && info.specVersion)
1382         {
1383             DeleteDeviceInfo();
1384             return OC_STACK_NO_MEMORY;
1385         }
1386     }
1387     else
1388     {
1389         savedDeviceInfo.specVersion = OICStrdup(OC_SPEC_VERSION);
1390         if(!savedDeviceInfo.specVersion && OC_SPEC_VERSION)
1391         {
1392             DeleteDeviceInfo();
1393             return OC_STACK_NO_MEMORY;
1394         }
1395     }
1396
1397     if (info.dataModelVersions)
1398     {
1399         savedDeviceInfo.dataModelVersions = CloneOCStringLL(info.dataModelVersions);
1400         if(!savedDeviceInfo.dataModelVersions && info.dataModelVersions)
1401         {
1402             DeleteDeviceInfo();
1403             return OC_STACK_NO_MEMORY;
1404         }
1405     }
1406     else
1407     {
1408         savedDeviceInfo.dataModelVersions = (OCStringLL *)OICCalloc(1,sizeof(OCStringLL));
1409         if (!savedDeviceInfo.dataModelVersions)
1410         {
1411             return OC_STACK_NO_MEMORY;
1412         }
1413         savedDeviceInfo.dataModelVersions->value = OICStrdup(OC_DATA_MODEL_VERSION);
1414         if(!savedDeviceInfo.dataModelVersions->value && OC_DATA_MODEL_VERSION)
1415         {
1416             DeleteDeviceInfo();
1417             return OC_STACK_NO_MEMORY;
1418         }
1419     }
1420
1421     return OC_STACK_OK;
1422 }
1423
1424 OCStackResult SaveDeviceInfo(OCDeviceInfo info)
1425 {
1426     OCStackResult res = OC_STACK_OK;
1427
1428     DeleteDeviceInfo();
1429
1430     res = DeepCopyDeviceInfo(info);
1431
1432     VERIFY_SUCCESS(res, OC_STACK_OK);
1433
1434     if (OCGetServerInstanceIDString() == NULL)
1435     {
1436         OIC_LOG(INFO, TAG, "Device ID generation failed");
1437         res =  OC_STACK_ERROR;
1438         goto exit;
1439     }
1440
1441     OIC_LOG(INFO, TAG, "Device initialized successfully.");
1442     return OC_STACK_OK;
1443
1444 exit:
1445     DeleteDeviceInfo();
1446     return res;
1447 }