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