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