resource/csdk/stack/src/ocresource.c

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