resource/csdk/stack/src/ocresource.c

   1 //******************************************************************
   2 //
   3 // Copyright 2014 Intel Mobile Communications GmbH All Rights Reserved.
   4 //
   5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   6 //
   7 // Licensed under the Apache License, Version 2.0 (the "License");
   8 // you may not use this file except in compliance with the License.
   9 // You may obtain a copy of the License at
  10 //
  11 //      http://www.apache.org/licenses/LICENSE-2.0
  12 //
  13 // Unless required by applicable law or agreed to in writing, software
  14 // distributed under the License is distributed on an "AS IS" BASIS,
  15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 // See the License for the specific language governing permissions and
  17 // limitations under the License.
  18 //
  19 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  20
  21 // Defining _POSIX_C_SOURCE macro with 200112L (or greater) as value
  22 // causes header files to expose definitions
  23 // corresponding to the POSIX.1-2001 base
  24 // specification (excluding the XSI extension).
  25 // For POSIX.1-2001 base specification,
  26 // Refer http://pubs.opengroup.org/onlinepubs/009695399/
  27 #define _POSIX_C_SOURCE 200112L
  28 #ifndef _GNU_SOURCE
  29 #define _GNU_SOURCE
  30 #endif
  31
  32 #include "iotivity_config.h"
  33 #ifdef HAVE_STRING_H
  34 #include <string.h>
  35 #endif
  36 #ifdef HAVE_STRINGS_H
  37 #include <strings.h>
  38 #endif
  39
  40 #include "ocresource.h"
  41 #include "ocresourcehandler.h"
  42 #include "ocobserve.h"
  43 #include "occollection.h"
  44 #include "oic_malloc.h"
  45 #include "oic_string.h"
  46 #include "logger.h"
  47 #include "cJSON.h"
  48 #include "ocpayload.h"
  49 #include "secureresourcemanager.h"
  50 #include "cacommon.h"
  51 #include "cainterface.h"
  52 #include "ocpayload.h"
  53
  54 #ifdef ROUTING_GATEWAY
  55 #include "routingmanager.h"
  56 #endif
  57
  58 #ifdef RD_SERVER
  59 #include "rd_database.h"
  60 #endif
  61
  62 /// Module Name
  63 #define TAG "OIC_RI_RESOURCE"
  64
  65 #define VERIFY_SUCCESS(op, successCode) { if (op != successCode) \
  66             {OIC_LOG_V(FATAL, TAG, "%s failed!!", #op); goto exit;} }
  67
  68 #define VERIFY_NON_NULL(arg, logLevel, retVal) { if (!(arg)) { OIC_LOG((logLevel), \
  69              TAG, #arg " is NULL"); return (retVal); } }
  70
  71 #include "platform_features.h"
  72
  73 extern OCResource *headResource;
  74 static OCPlatformInfo savedPlatformInfo = {0};
  75 static OCDeviceInfo savedDeviceInfo = {0};
  76
  77 /**
  78  * Prepares a Payload for response.
  79  */
  80 static OCStackResult BuildVirtualResourceResponse(const OCResource *resourcePtr,
  81                                                   OCDiscoveryPayload* payload,
  82                                                   OCDevAddr *endpoint);
  83
  84 //-----------------------------------------------------------------------------
  85 // Default resource entity handler function
  86 //-----------------------------------------------------------------------------
  87 OCEntityHandlerResult defaultResourceEHandler(OCEntityHandlerFlag flag,
  88         OCEntityHandlerRequest * request, void* callbackParam)
  89 {
  90     //TODO ("Implement me!!!!");
  91     // TODO:  remove silence unused param warnings
  92     (void) flag;
  93     (void) request;
  94     (void) callbackParam;
  95     return  OC_EH_OK; // Making sure that the Default EH and the Vendor EH have matching signatures
  96 }
  97
  98 /* This method will retrieve the port at which the secure resource is hosted */
  99 static OCStackResult GetSecurePortInfo(OCDevAddr *endpoint, uint16_t *port)
 100 {
 101     uint16_t p = 0;
 102
 103     if (endpoint->adapter == OC_ADAPTER_IP)
 104     {
 105         if (endpoint->flags & OC_IP_USE_V6)
 106         {
 107             p = caglobals.ip.u6s.port;
 108         }
 109         else if (endpoint->flags & OC_IP_USE_V4)
 110         {
 111             p = caglobals.ip.u4s.port;
 112         }
 113     }
 114
 115     *port = p;
 116     return OC_STACK_OK;
 117 }
 118
 119 #ifdef TCP_ADAPTER
 120 /* This method will retrieve the tcp port */
 121 static OCStackResult GetTCPPortInfo(OCDevAddr *endpoint, uint16_t *port)
 122 {
 123     uint16_t p = 0;
 124
 125     if (endpoint->adapter == OC_ADAPTER_IP)
 126     {
 127         if (endpoint->flags & OC_IP_USE_V4)
 128         {
 129             p = caglobals.tcp.ipv4.port;
 130         }
 131         else if (endpoint->flags & OC_IP_USE_V6)
 132         {
 133             p = caglobals.tcp.ipv6.port;
 134         }
 135     }
 136
 137     *port = p;
 138     return OC_STACK_OK;
 139 }
 140 #endif
 141
 142 /*
 143  * Function will extract 0, 1 or 2 filters from query.
 144  * More than 2 filters or unsupported filters will result in error.
 145  * If both filters are of the same supported type, the 2nd one will be picked.
 146  * Resource and device filters in the SAME query are NOT validated
 147  * and resources will likely not clear filters.
 148  */
 149 static OCStackResult ExtractFiltersFromQuery(char *query, char **filterOne, char **filterTwo)
 150 {
 151
 152     char *key = NULL;
 153     char *value = NULL;
 154     char *restOfQuery = NULL;
 155     int numKeyValuePairsParsed = 0;
 156
 157     *filterOne = NULL;
 158     *filterTwo = NULL;
 159
 160     OIC_LOG_V(INFO, TAG, "Extracting params from %s", query);
 161
 162     if (strnlen(query, MAX_QUERY_LENGTH) >= MAX_QUERY_LENGTH)
 163     {
 164         OIC_LOG(ERROR, TAG, "Query exceeds maximum length.");
 165         return OC_STACK_INVALID_QUERY;
 166     }
 167
 168     char *keyValuePair = strtok_r (query, OC_QUERY_SEPARATOR, &restOfQuery);
 169
 170     while(keyValuePair)
 171     {
 172         if (numKeyValuePairsParsed >= 2)
 173         {
 174             OIC_LOG(ERROR, TAG, "More than 2 queries params in URI.");
 175             return OC_STACK_INVALID_QUERY;
 176         }
 177
 178         key = strtok_r(keyValuePair, OC_KEY_VALUE_DELIMITER, &value);
 179
 180         if (!key || !value)
 181         {
 182             return OC_STACK_INVALID_QUERY;
 183         }
 184         else if (strncasecmp(key, OC_RSRVD_INTERFACE, sizeof(OC_RSRVD_INTERFACE) - 1) == 0)
 185         {
 186             *filterOne = value;     // if
 187         }
 188         else if (strncasecmp(key, OC_RSRVD_RESOURCE_TYPE, sizeof(OC_RSRVD_INTERFACE) - 1) == 0)
 189         {
 190             *filterTwo = value;     // rt
 191         }
 192         else
 193         {
 194             OIC_LOG_V(ERROR, TAG, "Unsupported query key: %s", key);
 195             return OC_STACK_INVALID_QUERY;
 196         }
 197         ++numKeyValuePairsParsed;
 198
 199         keyValuePair = strtok_r(NULL, OC_QUERY_SEPARATOR, &restOfQuery);
 200     }
 201
 202     OIC_LOG_V(INFO, TAG, "Extracted params if: %s and rt: %s.", *filterOne, *filterTwo);
 203     return OC_STACK_OK;
 204 }
 205
 206 static OCVirtualResources GetTypeOfVirtualURI(const char *uriInRequest)
 207 {
 208     if (strcmp(uriInRequest, OC_RSRVD_WELL_KNOWN_URI) == 0)
 209     {
 210         return OC_WELL_KNOWN_URI;
 211     }
 212     else if (strcmp(uriInRequest, OC_RSRVD_DEVICE_URI) == 0)
 213     {
 214         return OC_DEVICE_URI;
 215     }
 216     else if (strcmp(uriInRequest, OC_RSRVD_PLATFORM_URI) == 0)
 217     {
 218         return OC_PLATFORM_URI;
 219     }
 220     else if (strcmp(uriInRequest, OC_RSRVD_RESOURCE_TYPES_URI) == 0)
 221     {
 222         return OC_RESOURCE_TYPES_URI;
 223     }
 224 #ifdef ROUTING_GATEWAY
 225     else if (0 == strcmp(uriInRequest, OC_RSRVD_GATEWAY_URI))
 226     {
 227         return OC_GATEWAY_URI;
 228     }
 229 #endif
 230 #ifdef WITH_PRESENCE
 231     else if (strcmp(uriInRequest, OC_RSRVD_PRESENCE_URI) == 0)
 232     {
 233         return OC_PRESENCE;
 234     }
 235 #endif //WITH_PRESENCE
 236
 237 #ifdef MQ_BROKER
 238     else if (0 == strcmp(uriInRequest, OC_RSRVD_WELL_KNOWN_MQ_URI))
 239     {
 240         return OC_MQ_BROKER_URI;
 241     }
 242 #endif //MQ_BROKER
 243
 244 #ifdef TCP_ADAPTER
 245     else if (strcmp(uriInRequest, OC_RSRVD_KEEPALIVE_URI) == 0)
 246     {
 247         return OC_KEEPALIVE_RESOURCE_URI;
 248     }
 249 #endif
 250
 251     return OC_UNKNOWN_URI;
 252 }
 253
 254 static OCStackResult getQueryParamsForFiltering (OCVirtualResources uri, char *query,
 255                                             char **filterOne, char **filterTwo)
 256 {
 257     if(!filterOne || !filterTwo)
 258     {
 259         return OC_STACK_INVALID_PARAM;
 260     }
 261
 262     *filterOne = NULL;
 263     *filterTwo = NULL;
 264
 265     #ifdef WITH_PRESENCE
 266     if (uri == OC_PRESENCE)
 267     {
 268         //Nothing needs to be done, except for pass a OC_PRESENCE query through as OC_STACK_OK.
 269         OIC_LOG(INFO, TAG, "OC_PRESENCE Request for virtual resource.");
 270         return OC_STACK_OK;
 271     }
 272     #endif
 273
 274     OCStackResult result = OC_STACK_OK;
 275
 276     if (query && *query)
 277     {
 278         result = ExtractFiltersFromQuery(query, filterOne, filterTwo);
 279     }
 280
 281     return result;
 282 }
 283
 284 OCStackResult BuildResponseRepresentation(const OCResource *resourcePtr,
 285                     OCRepPayload** payload)
 286 {
 287     OCRepPayload *tempPayload = OCRepPayloadCreate();
 288
 289     if (!resourcePtr)
 290     {
 291         OCRepPayloadDestroy(tempPayload);
 292         return OC_STACK_INVALID_PARAM;
 293     }
 294
 295     if(!tempPayload)
 296     {
 297         return OC_STACK_NO_MEMORY;
 298     }
 299
 300     OCRepPayloadSetUri(tempPayload, resourcePtr->uri);
 301
 302     OCResourceType *resType = resourcePtr->rsrcType;
 303     while(resType)
 304     {
 305         OCRepPayloadAddResourceType(tempPayload, resType->resourcetypename);
 306         resType = resType->next;
 307     }
 308
 309     OCResourceInterface *resInterface = resourcePtr->rsrcInterface;
 310     while(resInterface)
 311     {
 312         OCRepPayloadAddInterface(tempPayload, resInterface->name);
 313         resInterface = resInterface->next;
 314     }
 315
 316     OCAttribute *resAttrib = resourcePtr->rsrcAttributes;
 317     while(resAttrib)
 318     {
 319         OCRepPayloadSetPropString(tempPayload, resAttrib->attrName,
 320                                 resAttrib->attrValue);
 321         resAttrib = resAttrib->next;
 322     }
 323
 324     if(!*payload)
 325     {
 326         *payload = tempPayload;
 327     }
 328     else
 329     {
 330         OCRepPayloadAppend(*payload, tempPayload);
 331     }
 332
 333     return OC_STACK_OK;
 334 }
 335
 336 OCStackResult BuildVirtualResourceResponse(const OCResource *resourcePtr,
 337                         OCDiscoveryPayload *payload, OCDevAddr *devAddr)
 338 {
 339     if (!resourcePtr || !payload)
 340     {
 341         return OC_STACK_INVALID_PARAM;
 342     }
 343     uint16_t securePort = 0;
 344     if (resourcePtr->resourceProperties & OC_SECURE)
 345     {
 346        if (GetSecurePortInfo(devAddr, &securePort) != OC_STACK_OK)
 347        {
 348            securePort = 0;
 349        }
 350     }
 351
 352 #ifdef TCP_ADAPTER
 353     uint16_t tcpPort = 0;
 354     if (GetTCPPortInfo(devAddr, &tcpPort) != OC_STACK_OK)
 355     {
 356         tcpPort = 0;
 357     }
 358     OCDiscoveryPayloadAddResource(payload, resourcePtr, securePort, tcpPort);
 359 #else
 360     OCDiscoveryPayloadAddResource(payload, resourcePtr, securePort);
 361 #endif
 362
 363     return OC_STACK_OK;
 364 }
 365
 366 uint8_t IsCollectionResource (OCResource *resource)
 367 {
 368     if(!resource)
 369     {
 370         return 0;
 371     }
 372
 373     if(resource->rsrcChildResourcesHead != NULL)
 374     {
 375         return 1;
 376     }
 377
 378     return 0;
 379 }
 380
 381 OCResource *FindResourceByUri(const char* resourceUri)
 382 {
 383     if(!resourceUri)
 384     {
 385         return NULL;
 386     }
 387
 388     OCResource * pointer = headResource;
 389     while (pointer)
 390     {
 391         if (strcmp(resourceUri, pointer->uri) == 0)
 392         {
 393             return pointer;
 394         }
 395         pointer = pointer->next;
 396     }
 397     OIC_LOG_V(INFO, TAG, "Resource %s not found", resourceUri);
 398     return NULL;
 399 }
 400
 401
 402 OCStackResult DetermineResourceHandling (const OCServerRequest *request,
 403                                          ResourceHandling *handling,
 404                                          OCResource **resource)
 405 {
 406     if(!request || !handling || !resource)
 407     {
 408         return OC_STACK_INVALID_PARAM;
 409     }
 410
 411     OIC_LOG_V(INFO, TAG, "DetermineResourceHandling for %s", request->resourceUrl);
 412
 413     // Check if virtual resource
 414     if (GetTypeOfVirtualURI(request->resourceUrl) != OC_UNKNOWN_URI)
 415     {
 416         OIC_LOG_V (INFO, TAG, "%s is virtual", request->resourceUrl);
 417         *handling = OC_RESOURCE_VIRTUAL;
 418         *resource = headResource;
 419         return OC_STACK_OK;
 420     }
 421     if (strlen((const char*)(request->resourceUrl)) == 0)
 422     {
 423         // Resource URL not specified
 424         *handling = OC_RESOURCE_NOT_SPECIFIED;
 425         return OC_STACK_NO_RESOURCE;
 426     }
 427     else
 428     {
 429         OCResource *resourcePtr = FindResourceByUri((const char*)request->resourceUrl);
 430         *resource = resourcePtr;
 431         if (!resourcePtr)
 432         {
 433             if(defaultDeviceHandler)
 434             {
 435                 *handling = OC_RESOURCE_DEFAULT_DEVICE_ENTITYHANDLER;
 436                 return OC_STACK_OK;
 437             }
 438
 439             // Resource does not exist
 440             // and default device handler does not exist
 441             *handling = OC_RESOURCE_NOT_SPECIFIED;
 442             return OC_STACK_NO_RESOURCE;
 443         }
 444
 445         if (IsCollectionResource (resourcePtr))
 446         {
 447             // Collection resource
 448             if (resourcePtr->entityHandler != defaultResourceEHandler)
 449             {
 450                 *handling = OC_RESOURCE_COLLECTION_WITH_ENTITYHANDLER;
 451                 return OC_STACK_OK;
 452             }
 453             else
 454             {
 455                 *handling = OC_RESOURCE_COLLECTION_DEFAULT_ENTITYHANDLER;
 456                 return OC_STACK_OK;
 457             }
 458         }
 459         else
 460         {
 461             // Resource not a collection
 462             if (resourcePtr->entityHandler != defaultResourceEHandler)
 463             {
 464                 *handling = OC_RESOURCE_NOT_COLLECTION_WITH_ENTITYHANDLER;
 465                 return OC_STACK_OK;
 466             }
 467             else
 468             {
 469                 *handling = OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER;
 470                 return OC_STACK_OK;
 471             }
 472         }
 473     }
 474 }
 475
 476 OCStackResult EntityHandlerCodeToOCStackCode(OCEntityHandlerResult ehResult)
 477 {
 478     OCStackResult result;
 479
 480     switch (ehResult)
 481     {
 482         case OC_EH_OK:
 483         case OC_EH_CONTENT:
 484         case OC_EH_VALID:
 485             result = OC_STACK_OK;
 486             break;
 487         case OC_EH_SLOW:
 488             result = OC_STACK_SLOW_RESOURCE;
 489             break;
 490         case OC_EH_ERROR:
 491             result = OC_STACK_ERROR;
 492             break;
 493         case OC_EH_FORBIDDEN:
 494             result = OC_STACK_RESOURCE_ERROR;
 495             break;
 496         case OC_EH_RESOURCE_CREATED:
 497             result = OC_STACK_RESOURCE_CREATED;
 498             break;
 499         case OC_EH_RESOURCE_DELETED:
 500             result = OC_STACK_RESOURCE_DELETED;
 501             break;
 502         case OC_EH_CHANGED:
 503             result = OC_STACK_RESOURCE_CHANGED;
 504             break;
 505         case OC_EH_RESOURCE_NOT_FOUND:
 506             result = OC_STACK_NO_RESOURCE;
 507             break;
 508         default:
 509             result = OC_STACK_ERROR;
 510     }
 511
 512     return result;
 513 }
 514
 515 static bool resourceMatchesRTFilter(OCResource *resource, char *resourceTypeFilter)
 516 {
 517     if (!resource)
 518     {
 519         return false;
 520     }
 521
 522     // Null or empty is analogous to no filter.
 523     if (resourceTypeFilter == NULL || *resourceTypeFilter == 0)
 524     {
 525         return true;
 526     }
 527
 528     OCResourceType *resourceTypePtr = resource->rsrcType;
 529
 530     while (resourceTypePtr)
 531     {
 532         if (strcmp (resourceTypePtr->resourcetypename, resourceTypeFilter) == 0)
 533         {
 534             return true;
 535         }
 536         resourceTypePtr = resourceTypePtr->next;
 537     }
 538
 539     OIC_LOG_V(INFO, TAG, "%s does not contain rt=%s.", resource->uri, resourceTypeFilter);
 540     return false;
 541 }
 542
 543 static bool resourceMatchesIFFilter(OCResource *resource, char *interfaceFilter)
 544 {
 545     if (!resource)
 546     {
 547         return false;
 548     }
 549
 550     // Null or empty is analogous to no filter.
 551     if (interfaceFilter == NULL || *interfaceFilter == 0)
 552     {
 553         return true;
 554     }
 555
 556     OCResourceInterface *interfacePtr = resource->rsrcInterface;
 557
 558     while (interfacePtr)
 559     {
 560         if ((strcmp (interfacePtr->name, interfaceFilter) == 0) &&
 561             (strcmp (OC_RSRVD_INTERFACE_LL, interfaceFilter) == 0 ||
 562              strcmp (OC_RSRVD_INTERFACE_DEFAULT, interfaceFilter) == 0))
 563         {
 564             return true;
 565         }
 566         interfacePtr = interfacePtr->next;
 567     }
 568
 569     OIC_LOG_V(INFO, TAG, "%s does not contain if=%s.", resource->uri, interfaceFilter);
 570     return false;
 571 }
 572
 573 /*
 574  * If the filters are null, they will be assumed to NOT be present
 575  * and the resource will not be matched against them.
 576  * Function will return true if all non null AND non empty filters passed in find a match.
 577  */
 578 static bool includeThisResourceInResponse(OCResource *resource,
 579                                           char *interfaceFilter,
 580                                           char *resourceTypeFilter)
 581 {
 582     if (!resource)
 583     {
 584         OIC_LOG(ERROR, TAG, "Invalid resource");
 585         return false;
 586     }
 587
 588     if (resource->resourceProperties & OC_EXPLICIT_DISCOVERABLE)
 589     {
 590         /*
 591          * At least one valid filter should be available to
 592          * include the resource in discovery response
 593          */
 594         if (!(resourceTypeFilter && *resourceTypeFilter))
 595         {
 596             OIC_LOG_V(INFO, TAG, "%s no query string for EXPLICIT_DISCOVERABLE \
 597                 resource", resource->uri);
 598             return false;
 599         }
 600     }
 601     else if ( !(resource->resourceProperties & OC_ACTIVE) ||
 602          !(resource->resourceProperties & OC_DISCOVERABLE))
 603     {
 604         OIC_LOG_V(INFO, TAG, "%s not ACTIVE or DISCOVERABLE", resource->uri);
 605         return false;
 606     }
 607
 608     return resourceMatchesIFFilter(resource, interfaceFilter) &&
 609            resourceMatchesRTFilter(resource, resourceTypeFilter);
 610
 611 }
 612
 613 OCStackResult SendNonPersistantDiscoveryResponse(OCServerRequest *request, OCResource *resource,
 614                                 OCPayload *discoveryPayload, OCEntityHandlerResult ehResult)
 615 {
 616     OCEntityHandlerResponse response = {0};
 617
 618     response.ehResult = ehResult;
 619     response.payload = discoveryPayload;
 620     response.persistentBufferFlag = 0;
 621     response.requestHandle = (OCRequestHandle) request;
 622     response.resourceHandle = (OCResourceHandle) resource;
 623
 624     return OCDoResponse(&response);
 625 }
 626
 627 static OCStackResult HandleVirtualResource (OCServerRequest *request, OCResource* resource)
 628 {
 629     if (!request || !resource)
 630     {
 631         return OC_STACK_INVALID_PARAM;
 632     }
 633
 634     OCStackResult discoveryResult = OC_STACK_ERROR;
 635     OCPayload* payload = NULL;
 636
 637     OIC_LOG(INFO, TAG, "Entering HandleVirtualResource");
 638
 639     OCVirtualResources virtualUriInRequest = GetTypeOfVirtualURI (request->resourceUrl);
 640
 641     // Step 1: Generate the response to discovery request
 642     if (virtualUriInRequest == OC_WELL_KNOWN_URI
 643 #ifdef MQ_BROKER
 644             || virtualUriInRequest == OC_MQ_BROKER_URI
 645 #endif
 646             )
 647     {
 648         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 649         {
 650             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 651             return OC_STACK_UNAUTHORIZED_REQ;
 652         }
 653
 654         char *interfaceQuery = NULL;
 655         char *resourceTypeQuery = NULL;
 656
 657         discoveryResult = getQueryParamsForFiltering (virtualUriInRequest, request->query,
 658                 &interfaceQuery, &resourceTypeQuery);
 659         bool interfaceQueryAllocated = false;
 660         if (!interfaceQuery && !resourceTypeQuery)
 661         {
 662             interfaceQueryAllocated = true;
 663             interfaceQuery = OICStrdup(OC_RSRVD_INTERFACE_LL);
 664         }
 665
 666         if (discoveryResult == OC_STACK_OK)
 667         {
 668             payload = (OCPayload *)OCDiscoveryPayloadCreate();
 669
 670             if (payload)
 671             {
 672                 OCDiscoveryPayload *discPayload = (OCDiscoveryPayload *)payload;
 673                 bool foundResourceAtRD = false;
 674
 675                 if (!resourceTypeQuery && interfaceQuery && (0 == strcmp(interfaceQuery, OC_RSRVD_INTERFACE_LL)))
 676                 {
 677                     OCResourceProperty prop = OC_DISCOVERABLE;
 678 #ifdef MQ_BROKER
 679                     if (OC_MQ_BROKER_URI == virtualUriInRequest)
 680                     {
 681                         prop = OC_MQ_BROKER;
 682                     }
 683 #endif
 684
 685                     for (; resource && discoveryResult == OC_STACK_OK; resource = resource->next)
 686                     {
 687                         foundResourceAtRD = false;
 688 #ifdef RD_SERVER
 689                         if (strcmp(resource->uri, OC_RSRVD_RD_URI) == 0)
 690                         {
 691                             if (OC_STACK_OK == OCRDDatabaseCheckResources(interfaceQuery, resourceTypeQuery, discPayload))
 692                             {
 693                                 foundResourceAtRD = true;
 694                                 discoveryResult = OC_STACK_OK;
 695                             }
 696                         }
 697 #endif
 698                         if (!foundResourceAtRD && (resource->resourceProperties & prop))
 699                         {
 700                             discoveryResult = BuildVirtualResourceResponse(resource, discPayload, &request->devAddr);
 701                         }
 702                     }
 703                 }
 704                 else
 705                 {
 706                     if (interfaceQuery && (0 != strcmp(interfaceQuery, OC_RSRVD_INTERFACE_LL)))
 707                     {
 708                         discPayload->uri = OICStrdup(OC_RSRVD_WELL_KNOWN_URI);
 709                         VERIFY_NON_NULL(discPayload->uri, ERROR, OC_STACK_NO_MEMORY);
 710                         if (savedDeviceInfo.deviceName)
 711                         {
 712                             discPayload->name = OICStrdup(savedDeviceInfo.deviceName);
 713                             VERIFY_NON_NULL(discPayload->name, ERROR, OC_STACK_NO_MEMORY);
 714                         }
 715                         discPayload->type = (OCStringLL*)OICCalloc(1, sizeof(OCStringLL));
 716                         VERIFY_NON_NULL(discPayload->type, ERROR, OC_STACK_NO_MEMORY);
 717                         discPayload->type->value = OICStrdup(OC_RSRVD_RESOURCE_TYPE_RES);
 718                         VERIFY_NON_NULL(discPayload->type->value, ERROR, OC_STACK_NO_MEMORY);
 719                         OCResourcePayloadAddStringLL(&discPayload->iface, OC_RSRVD_INTERFACE_LL);
 720                         OCResourcePayloadAddStringLL(&discPayload->iface, OC_RSRVD_INTERFACE_DEFAULT);
 721                         VERIFY_NON_NULL(discPayload->iface, ERROR, OC_STACK_NO_MEMORY);
 722                     }
 723                     for (;resource && discoveryResult == OC_STACK_OK; resource = resource->next)
 724                     {
 725 #ifdef RD_SERVER
 726                         if (strcmp(resource->uri, OC_RSRVD_RD_URI) == 0)
 727                         {
 728                             if (OC_STACK_OK == OCRDDatabaseCheckResources(interfaceQuery, resourceTypeQuery, discPayload))
 729                             {
 730                                 foundResourceAtRD = true;
 731                                 discoveryResult = OC_STACK_OK;
 732                             }
 733                         }
 734 #endif
 735                         if (!foundResourceAtRD && includeThisResourceInResponse(resource, interfaceQuery, resourceTypeQuery))
 736                         {
 737                             discoveryResult = BuildVirtualResourceResponse(resource, discPayload, &request->devAddr);
 738                         }
 739                     }
 740                     // Set discoveryResult appropriately if no 'valid' resources are available
 741                     if (discPayload->resources == NULL && !foundResourceAtRD)
 742                     {
 743                         discoveryResult = OC_STACK_NO_RESOURCE;
 744                     }
 745                 }
 746                 if (discoveryResult == OC_STACK_OK && foundResourceAtRD == false)
 747                 {
 748                     discPayload->sid = (char *)OICCalloc(1, UUID_STRING_SIZE);
 749                     VERIFY_NON_NULL(discPayload->sid, ERROR, OC_STACK_NO_MEMORY);
 750
 751                     const char* uid = OCGetServerInstanceIDString();
 752                     if (uid)
 753                     {
 754                         memcpy(discPayload->sid, uid, UUID_STRING_SIZE);
 755                     }
 756                 }
 757             }
 758             else
 759             {
 760                 discoveryResult = OC_STACK_NO_MEMORY;
 761             }
 762
 763         }
 764         else
 765         {
 766             OIC_LOG_V(ERROR, TAG, "Error (%d) parsing query.", discoveryResult);
 767         }
 768         if (interfaceQueryAllocated)
 769         {
 770             OICFree(interfaceQuery);
 771         }
 772     }
 773     else if (virtualUriInRequest == OC_DEVICE_URI)
 774     {
 775         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 776         {
 777             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 778             return OC_STACK_UNAUTHORIZED_REQ;
 779         }
 780
 781         const char* deviceId = OCGetServerInstanceIDString();
 782         if (!deviceId)
 783         {
 784             discoveryResult = OC_STACK_ERROR;
 785         }
 786         else
 787         {
 788             char *dataModelVersions = OCCreateString(savedDeviceInfo.dataModelVersions);
 789             if (!dataModelVersions)
 790             {
 791                 discoveryResult = OC_STACK_NO_MEMORY;
 792             }
 793             else
 794             {
 795                 payload = (OCPayload*) OCDevicePayloadCreate(deviceId, savedDeviceInfo.deviceName,
 796                     savedDeviceInfo.types, savedDeviceInfo.specVersion, dataModelVersions);
 797                 if (!payload)
 798                 {
 799                      discoveryResult = OC_STACK_NO_MEMORY;
 800                 }
 801                 else
 802                 {
 803                      discoveryResult = OC_STACK_OK;
 804                 }
 805                 OICFree(dataModelVersions);
 806             }
 807         }
 808     }
 809     else if (virtualUriInRequest == OC_PLATFORM_URI)
 810     {
 811         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 812         {
 813             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 814             return OC_STACK_UNAUTHORIZED_REQ;
 815         }
 816
 817         payload = (OCPayload*)OCPlatformPayloadCreate(&savedPlatformInfo);
 818         if (!payload)
 819         {
 820             discoveryResult = OC_STACK_NO_MEMORY;
 821         }
 822         else
 823         {
 824             discoveryResult = OC_STACK_OK;
 825         }
 826     }
 827 #ifdef ROUTING_GATEWAY
 828     else if (OC_GATEWAY_URI == virtualUriInRequest)
 829     {
 830         // Received request for a gateway
 831         OIC_LOG(INFO, TAG, "Request is for Gateway Virtual Request");
 832         discoveryResult = RMHandleGatewayRequest(request, resource);
 833
 834     }
 835 #endif
 836 #ifdef TCP_ADAPTER
 837     else if (OC_KEEPALIVE_RESOURCE_URI == virtualUriInRequest)
 838     {
 839         // Received request for a keepalive
 840         OIC_LOG(INFO, TAG, "Request is for KeepAlive Request");
 841         discoveryResult = HandleKeepAliveRequest(request, resource);
 842     }
 843 #endif
 844     /**
 845      * Step 2: Send the discovery response
 846      *
 847      * Iotivity should respond to discovery requests in below manner:
 848      * 1)If query filter matching fails and discovery request is multicast,
 849      *   it should NOT send any response.
 850      * 2)If query filter matching fails and discovery request is unicast,
 851      *   it should send an error(RESOURCE_NOT_FOUND - 404) response.
 852      * 3)If Server does not have any 'DISCOVERABLE' resources and discovery
 853      *   request is multicast, it should NOT send any response.
 854      * 4)If Server does not have any 'DISCOVERABLE' resources and discovery
 855      *   request is unicast, it should send an error(RESOURCE_NOT_FOUND - 404) response.
 856      */
 857
 858 #ifdef WITH_PRESENCE
 859     if ((virtualUriInRequest == OC_PRESENCE) &&
 860         (resource->resourceProperties & OC_ACTIVE))
 861     {
 862         // Need to send ACK when the request is CON.
 863         if (request->qos == OC_HIGH_QOS)
 864         {
 865             CAEndpoint_t endpoint = { .adapter = CA_DEFAULT_ADAPTER };
 866             CopyDevAddrToEndpoint(&request->devAddr, &endpoint);
 867             SendDirectStackResponse(&endpoint, request->coapID, CA_EMPTY, CA_MSG_ACKNOWLEDGE,
 868                                     0, NULL, NULL, 0, NULL, CA_RESPONSE_FOR_RES);
 869         }
 870         FindAndDeleteServerRequest(request);
 871
 872         // Presence uses observer notification api to respond via SendPresenceNotification.
 873         SendPresenceNotification(resource->rsrcType, OC_PRESENCE_TRIGGER_CHANGE);
 874     }
 875     else
 876 #endif
 877 #if ROUTING_GATEWAY
 878     // Gateway uses the RMHandleGatewayRequest to respond to the request.
 879     if (OC_GATEWAY_URI != virtualUriInRequest)
 880 #endif
 881     {
 882 #if TCP_ADAPTER
 883         // KeepAlive uses the HandleKeepAliveRequest to respond to the request.
 884         if (OC_KEEPALIVE_RESOURCE_URI != virtualUriInRequest)
 885 #endif
 886         {
 887             if(discoveryResult == OC_STACK_OK)
 888             {
 889                 SendNonPersistantDiscoveryResponse(request, resource, payload, OC_EH_OK);
 890             }
 891             else if(((request->devAddr.flags &  OC_MULTICAST) == false) &&
 892                 (request->devAddr.adapter != OC_ADAPTER_RFCOMM_BTEDR) &&
 893                 (request->devAddr.adapter != OC_ADAPTER_GATT_BTLE))
 894             {
 895                 OIC_LOG_V(ERROR, TAG, "Sending a (%d) error to (%d) discovery request",
 896                     discoveryResult, virtualUriInRequest);
 897                 SendNonPersistantDiscoveryResponse(request, resource, NULL,
 898                     (discoveryResult == OC_STACK_NO_RESOURCE) ?
 899                             OC_EH_RESOURCE_NOT_FOUND : OC_EH_ERROR);
 900             }
 901             else
 902             {
 903                 // Ignoring the discovery request as per RFC 7252, Section #8.2
 904                 OIC_LOG(INFO, TAG, "Silently ignoring the request since no useful data to send.");
 905                 // the request should be removed.
 906                 // since it never remove and causes a big memory waste.
 907                 FindAndDeleteServerRequest(request);
 908             }
 909         }
 910     }
 911
 912     OCPayloadDestroy(payload);
 913
 914     return OC_STACK_OK;
 915 }
 916
 917 static OCStackResult
 918 HandleDefaultDeviceEntityHandler (OCServerRequest *request)
 919 {
 920     if(!request)
 921     {
 922         return OC_STACK_INVALID_PARAM;
 923     }
 924
 925     OCStackResult result = OC_STACK_OK;
 926     OCEntityHandlerResult ehResult = OC_EH_ERROR;
 927     OCEntityHandlerRequest ehRequest = {0};
 928
 929     OIC_LOG(INFO, TAG, "Entering HandleResourceWithDefaultDeviceEntityHandler");
 930     result = FormOCEntityHandlerRequest(&ehRequest,
 931                                         (OCRequestHandle) request,
 932                                         request->method,
 933                                         &request->devAddr,
 934                                         (OCResourceHandle) NULL, request->query,
 935                                         PAYLOAD_TYPE_REPRESENTATION,
 936                                         request->payload,
 937                                         request->payloadSize,
 938                                         request->numRcvdVendorSpecificHeaderOptions,
 939                                         request->rcvdVendorSpecificHeaderOptions,
 940                                         (OCObserveAction)request->observationOption,
 941                                         (OCObservationId)0,
 942                                         request->coapID);
 943     VERIFY_SUCCESS(result, OC_STACK_OK);
 944
 945     // At this point we know for sure that defaultDeviceHandler exists
 946     ehResult = defaultDeviceHandler(OC_REQUEST_FLAG, &ehRequest,
 947                                   (char*) request->resourceUrl, defaultDeviceHandlerCallbackParameter);
 948     if(ehResult == OC_EH_SLOW)
 949     {
 950         OIC_LOG(INFO, TAG, "This is a slow resource");
 951         request->slowFlag = 1;
 952     }
 953     else if(ehResult == OC_EH_ERROR)
 954     {
 955         FindAndDeleteServerRequest(request);
 956     }
 957     result = EntityHandlerCodeToOCStackCode(ehResult);
 958 exit:
 959     OCPayloadDestroy(ehRequest.payload);
 960     return result;
 961 }
 962
 963 static OCStackResult
 964 HandleResourceWithEntityHandler (OCServerRequest *request,
 965                                  OCResource *resource,
 966                                  uint8_t collectionResource)
 967 {
 968     if(!request || ! resource)
 969     {
 970         return OC_STACK_INVALID_PARAM;
 971     }
 972
 973     OCStackResult result = OC_STACK_ERROR;
 974     OCEntityHandlerResult ehResult = OC_EH_ERROR;
 975     OCEntityHandlerFlag ehFlag = OC_REQUEST_FLAG;
 976     ResourceObserver *resObs = NULL;
 977
 978     OCEntityHandlerRequest ehRequest = {0};
 979
 980     OIC_LOG(INFO, TAG, "Entering HandleResourceWithEntityHandler");
 981     OCPayloadType type = PAYLOAD_TYPE_REPRESENTATION;
 982     // check the security resource
 983     if (request && request->resourceUrl && SRMIsSecurityResourceURI(request->resourceUrl))
 984     {
 985         type = PAYLOAD_TYPE_SECURITY;
 986
 987     }
 988
 989     result = FormOCEntityHandlerRequest(&ehRequest,
 990                                         (OCRequestHandle)request,
 991                                         request->method,
 992                                         &request->devAddr,
 993                                         (OCResourceHandle)resource,
 994                                         request->query,
 995                                         type,
 996                                         request->payload,
 997                                         request->payloadSize,
 998                                         request->numRcvdVendorSpecificHeaderOptions,
 999                                         request->rcvdVendorSpecificHeaderOptions,
1000                                         (OCObserveAction)request->observationOption,
1001                                         0,
1002                                         request->coapID);
1003     VERIFY_SUCCESS(result, OC_STACK_OK);
1004
1005     if(ehRequest.obsInfo.action == OC_OBSERVE_NO_OPTION)
1006     {
1007         OIC_LOG(INFO, TAG, "No observation requested");
1008         ehFlag = OC_REQUEST_FLAG;
1009     }
1010     else if(ehRequest.obsInfo.action == OC_OBSERVE_REGISTER && !collectionResource)
1011     {
1012         OIC_LOG(INFO, TAG, "Observation registration requested");
1013
1014         ResourceObserver *obs = GetObserverUsingToken (request->requestToken,
1015                                     request->tokenLength);
1016
1017         if (obs)
1018         {
1019             OIC_LOG (INFO, TAG, "Observer with this token already present");
1020             OIC_LOG (INFO, TAG, "Possibly re-transmitted CON OBS request");
1021             OIC_LOG (INFO, TAG, "Not adding observer. Not responding to client");
1022             OIC_LOG (INFO, TAG, "The first request for this token is already ACKED.");
1023
1024             // server requests are usually free'd when the response is sent out
1025             // for the request in ocserverrequest.c : HandleSingleResponse()
1026             // Since we are making an early return and not responding, the server request
1027             // needs to be deleted.
1028             FindAndDeleteServerRequest (request);
1029             return OC_STACK_OK;
1030         }
1031
1032         result = GenerateObserverId(&ehRequest.obsInfo.obsId);
1033         VERIFY_SUCCESS(result, OC_STACK_OK);
1034
1035         result = AddObserver ((const char*)(request->resourceUrl),
1036                 (const char *)(request->query),
1037                 ehRequest.obsInfo.obsId, request->requestToken, request->tokenLength,
1038                 resource, request->qos, request->acceptFormat,
1039                 &request->devAddr);
1040
1041         if(result == OC_STACK_OK)
1042         {
1043             OIC_LOG(INFO, TAG, "Added observer successfully");
1044             request->observeResult = OC_STACK_OK;
1045             ehFlag = (OCEntityHandlerFlag)(OC_REQUEST_FLAG | OC_OBSERVE_FLAG);
1046         }
1047         else if (result == OC_STACK_RESOURCE_ERROR)
1048         {
1049             OIC_LOG(INFO, TAG, "The Resource is not active, discoverable or observable");
1050             request->observeResult = OC_STACK_ERROR;
1051             ehFlag = OC_REQUEST_FLAG;
1052         }
1053         else
1054         {
1055             // The error in observeResult for the request will be used when responding to this
1056             // request by omitting the observation option/sequence number.
1057             request->observeResult = OC_STACK_ERROR;
1058             OIC_LOG(ERROR, TAG, "Observer Addition failed");
1059             ehFlag = OC_REQUEST_FLAG;
1060             FindAndDeleteServerRequest(request);
1061             goto exit;
1062         }
1063
1064     }
1065     else if(ehRequest.obsInfo.action == OC_OBSERVE_DEREGISTER &&
1066             !collectionResource)
1067     {
1068         OIC_LOG(INFO, TAG, "Deregistering observation requested");
1069
1070         resObs = GetObserverUsingToken (request->requestToken, request->tokenLength);
1071
1072         if (NULL == resObs)
1073         {
1074             // Stack does not contain this observation request
1075             // Either token is incorrect or observation list is corrupted
1076             result = OC_STACK_ERROR;
1077             goto exit;
1078         }
1079         ehRequest.obsInfo.obsId = resObs->observeId;
1080         ehFlag = (OCEntityHandlerFlag)(ehFlag | OC_OBSERVE_FLAG);
1081
1082         result = DeleteObserverUsingToken (request->requestToken, request->tokenLength);
1083
1084         if(result == OC_STACK_OK)
1085         {
1086             OIC_LOG(INFO, TAG, "Removed observer successfully");
1087             request->observeResult = OC_STACK_OK;
1088             // There should be no observe option header for de-registration response.
1089             // Set as an invalid value here so we can detect it later and remove the field in response.
1090             request->observationOption = MAX_SEQUENCE_NUMBER + 1;
1091         }
1092         else
1093         {
1094             request->observeResult = OC_STACK_ERROR;
1095             OIC_LOG(ERROR, TAG, "Observer Removal failed");
1096             FindAndDeleteServerRequest(request);
1097             goto exit;
1098         }
1099     }
1100     else
1101     {
1102         result = OC_STACK_ERROR;
1103         goto exit;
1104     }
1105
1106     ehResult = resource->entityHandler(ehFlag, &ehRequest, resource->entityHandlerCallbackParam);
1107     if(ehResult == OC_EH_SLOW)
1108     {
1109         OIC_LOG(INFO, TAG, "This is a slow resource");
1110         request->slowFlag = 1;
1111     }
1112     else if(ehResult == OC_EH_ERROR)
1113     {
1114         FindAndDeleteServerRequest(request);
1115     }
1116     result = EntityHandlerCodeToOCStackCode(ehResult);
1117 exit:
1118     OCPayloadDestroy(ehRequest.payload);
1119     return result;
1120 }
1121
1122 static OCStackResult
1123 HandleCollectionResourceDefaultEntityHandler (OCServerRequest *request,
1124                                               OCResource *resource)
1125 {
1126     if(!request || !resource)
1127     {
1128         return OC_STACK_INVALID_PARAM;
1129     }
1130
1131     OCStackResult result = OC_STACK_ERROR;
1132     OCEntityHandlerRequest ehRequest = {0};
1133
1134     result = FormOCEntityHandlerRequest(&ehRequest,
1135                                         (OCRequestHandle)request,
1136                                         request->method,
1137                                         &request->devAddr,
1138                                         (OCResourceHandle)resource,
1139                                         request->query,
1140                                         PAYLOAD_TYPE_REPRESENTATION,
1141                                         request->payload,
1142                                         request->payloadSize,
1143                                         request->numRcvdVendorSpecificHeaderOptions,
1144                                         request->rcvdVendorSpecificHeaderOptions,
1145                                         (OCObserveAction)request->observationOption,
1146                                         (OCObservationId)0,
1147                                         request->coapID);
1148     if(result == OC_STACK_OK)
1149     {
1150         result = DefaultCollectionEntityHandler (OC_REQUEST_FLAG, &ehRequest);
1151     }
1152
1153     OCPayloadDestroy(ehRequest.payload);
1154     return result;
1155 }
1156
1157 OCStackResult
1158 ProcessRequest(ResourceHandling resHandling, OCResource *resource, OCServerRequest *request)
1159 {
1160     OCStackResult ret = OC_STACK_OK;
1161
1162     switch (resHandling)
1163     {
1164         case OC_RESOURCE_VIRTUAL:
1165         {
1166             ret = HandleVirtualResource (request, resource);
1167             break;
1168         }
1169         case OC_RESOURCE_DEFAULT_DEVICE_ENTITYHANDLER:
1170         {
1171             ret = HandleDefaultDeviceEntityHandler(request);
1172             break;
1173         }
1174         case OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER:
1175         {
1176             OIC_LOG(INFO, TAG, "OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER");
1177             return OC_STACK_ERROR;
1178         }
1179         case OC_RESOURCE_NOT_COLLECTION_WITH_ENTITYHANDLER:
1180         {
1181             ret = HandleResourceWithEntityHandler (request, resource, 0);
1182             break;
1183         }
1184         case OC_RESOURCE_COLLECTION_WITH_ENTITYHANDLER:
1185         {
1186             ret = HandleResourceWithEntityHandler (request, resource, 1);
1187             break;
1188         }
1189         case OC_RESOURCE_COLLECTION_DEFAULT_ENTITYHANDLER:
1190         {
1191             ret = HandleCollectionResourceDefaultEntityHandler (request, resource);
1192             break;
1193         }
1194         case OC_RESOURCE_NOT_SPECIFIED:
1195         {
1196             ret = OC_STACK_NO_RESOURCE;
1197             break;
1198         }
1199         default:
1200         {
1201             OIC_LOG(INFO, TAG, "Invalid Resource Determination");
1202             return OC_STACK_ERROR;
1203         }
1204     }
1205     return ret;
1206 }
1207
1208 void DeletePlatformInfo()
1209 {
1210     OIC_LOG(INFO, TAG, "Deleting platform info.");
1211
1212     OICFree(savedPlatformInfo.platformID);
1213     savedPlatformInfo.platformID = NULL;
1214
1215     OICFree(savedPlatformInfo.manufacturerName);
1216     savedPlatformInfo.manufacturerName = NULL;
1217
1218     OICFree(savedPlatformInfo.manufacturerUrl);
1219     savedPlatformInfo.manufacturerUrl = NULL;
1220
1221     OICFree(savedPlatformInfo.modelNumber);
1222     savedPlatformInfo.modelNumber = NULL;
1223
1224     OICFree(savedPlatformInfo.dateOfManufacture);
1225     savedPlatformInfo.dateOfManufacture = NULL;
1226
1227     OICFree(savedPlatformInfo.platformVersion);
1228     savedPlatformInfo.platformVersion = NULL;
1229
1230     OICFree(savedPlatformInfo.operatingSystemVersion);
1231     savedPlatformInfo.operatingSystemVersion = NULL;
1232
1233     OICFree(savedPlatformInfo.hardwareVersion);
1234     savedPlatformInfo.hardwareVersion = NULL;
1235
1236     OICFree(savedPlatformInfo.firmwareVersion);
1237     savedPlatformInfo.firmwareVersion = NULL;
1238
1239     OICFree(savedPlatformInfo.supportUrl);
1240     savedPlatformInfo.supportUrl = NULL;
1241
1242     OICFree(savedPlatformInfo.systemTime);
1243     savedPlatformInfo.systemTime = NULL;
1244 }
1245
1246 static OCStackResult DeepCopyPlatFormInfo(OCPlatformInfo info)
1247 {
1248     savedPlatformInfo.platformID = OICStrdup(info.platformID);
1249     savedPlatformInfo.manufacturerName = OICStrdup(info.manufacturerName);
1250     savedPlatformInfo.manufacturerUrl = OICStrdup(info.manufacturerUrl);
1251     savedPlatformInfo.modelNumber = OICStrdup(info.modelNumber);
1252     savedPlatformInfo.dateOfManufacture = OICStrdup(info.dateOfManufacture);
1253     savedPlatformInfo.platformVersion = OICStrdup(info.platformVersion);
1254     savedPlatformInfo.operatingSystemVersion = OICStrdup(info.operatingSystemVersion);
1255     savedPlatformInfo.hardwareVersion = OICStrdup(info.hardwareVersion);
1256     savedPlatformInfo.firmwareVersion = OICStrdup(info.firmwareVersion);
1257     savedPlatformInfo.supportUrl = OICStrdup(info.supportUrl);
1258     savedPlatformInfo.systemTime = OICStrdup(info.systemTime);
1259
1260     if ((!savedPlatformInfo.platformID && info.platformID)||
1261         (!savedPlatformInfo.manufacturerName && info.manufacturerName)||
1262         (!savedPlatformInfo.manufacturerUrl && info.manufacturerUrl)||
1263         (!savedPlatformInfo.modelNumber && info.modelNumber)||
1264         (!savedPlatformInfo.dateOfManufacture && info.dateOfManufacture)||
1265         (!savedPlatformInfo.platformVersion && info.platformVersion)||
1266         (!savedPlatformInfo.operatingSystemVersion && info.operatingSystemVersion)||
1267         (!savedPlatformInfo.hardwareVersion && info.hardwareVersion)||
1268         (!savedPlatformInfo.firmwareVersion && info.firmwareVersion)||
1269         (!savedPlatformInfo.supportUrl && info.supportUrl)||
1270         (!savedPlatformInfo.systemTime && info.systemTime))
1271     {
1272         DeletePlatformInfo();
1273         return OC_STACK_INVALID_PARAM;
1274     }
1275
1276     return OC_STACK_OK;
1277
1278 }
1279
1280 OCStackResult SavePlatformInfo(OCPlatformInfo info)
1281 {
1282     DeletePlatformInfo();
1283
1284     OCStackResult res = DeepCopyPlatFormInfo(info);
1285
1286     if (res != OC_STACK_OK)
1287     {
1288         OIC_LOG_V(ERROR, TAG, "Failed to save platform info. errno(%d)", res);
1289     }
1290     else
1291     {
1292         OIC_LOG(INFO, TAG, "Platform info saved.");
1293     }
1294
1295     return res;
1296 }
1297
1298 void DeleteDeviceInfo()
1299 {
1300     OIC_LOG(INFO, TAG, "Deleting device info.");
1301
1302     OICFree(savedDeviceInfo.deviceName);
1303     OCFreeOCStringLL(savedDeviceInfo.types);
1304     OICFree(savedDeviceInfo.specVersion);
1305     OCFreeOCStringLL(savedDeviceInfo.dataModelVersions);
1306     savedDeviceInfo.deviceName = NULL;
1307     savedDeviceInfo.specVersion = NULL;
1308     savedDeviceInfo.dataModelVersions = NULL;
1309 }
1310
1311 static OCStackResult DeepCopyDeviceInfo(OCDeviceInfo info)
1312 {
1313     savedDeviceInfo.deviceName = OICStrdup(info.deviceName);
1314
1315     if(!savedDeviceInfo.deviceName && info.deviceName)
1316     {
1317         DeleteDeviceInfo();
1318         return OC_STACK_NO_MEMORY;
1319     }
1320
1321     if (info.types)
1322     {
1323         savedDeviceInfo.types = CloneOCStringLL(info.types);
1324         OCStringLL *type = info.types;
1325         bool found = false;
1326         while (type)
1327         {
1328             if (type && type->value && 0 == strcmp(type->value, OC_RSRVD_RESOURCE_TYPE_DEVICE))
1329             {
1330                 found = true;
1331             }
1332             type = type->next;
1333         }
1334         if (!found)
1335         {
1336             // Append the oic.wk.d at the start of rt link parameter value.
1337             OCStringLL *dest = (OCStringLL*)OICCalloc (1, sizeof (OCStringLL));
1338             if (!dest)
1339             {
1340                 DeleteDeviceInfo();
1341                 return OC_STACK_NO_MEMORY;
1342             }
1343             dest->value = OICStrdup (OC_RSRVD_RESOURCE_TYPE_DEVICE);
1344             if (!dest->value)
1345             {
1346                 DeleteDeviceInfo();
1347                 return OC_STACK_NO_MEMORY;
1348             }
1349             dest->next = savedDeviceInfo.types;
1350             savedDeviceInfo.types = dest;
1351         }
1352         if(!savedDeviceInfo.types && info.types)
1353         {
1354             DeleteDeviceInfo();
1355             return OC_STACK_NO_MEMORY;
1356         }
1357     }
1358
1359     if (info.specVersion)
1360     {
1361         savedDeviceInfo.specVersion = OICStrdup(info.specVersion);
1362         if(!savedDeviceInfo.specVersion && info.specVersion)
1363         {
1364             DeleteDeviceInfo();
1365             return OC_STACK_NO_MEMORY;
1366         }
1367     }
1368     else
1369     {
1370         savedDeviceInfo.specVersion = OICStrdup(OC_SPEC_VERSION);
1371         if(!savedDeviceInfo.specVersion && OC_SPEC_VERSION)
1372         {
1373             DeleteDeviceInfo();
1374             return OC_STACK_NO_MEMORY;
1375         }
1376     }
1377
1378     if (info.dataModelVersions)
1379     {
1380         savedDeviceInfo.dataModelVersions = CloneOCStringLL(info.dataModelVersions);
1381         if(!savedDeviceInfo.dataModelVersions && info.dataModelVersions)
1382         {
1383             DeleteDeviceInfo();
1384             return OC_STACK_NO_MEMORY;
1385         }
1386     }
1387     else
1388     {
1389         savedDeviceInfo.dataModelVersions = (OCStringLL *)OICCalloc(1,sizeof(OCStringLL));
1390         if (!savedDeviceInfo.dataModelVersions)
1391         {
1392             return OC_STACK_NO_MEMORY;
1393         }
1394         savedDeviceInfo.dataModelVersions->value = OICStrdup(OC_DATA_MODEL_VERSION);
1395         if(!savedDeviceInfo.dataModelVersions->value && OC_DATA_MODEL_VERSION)
1396         {
1397             DeleteDeviceInfo();
1398             return OC_STACK_NO_MEMORY;
1399         }
1400     }
1401
1402     return OC_STACK_OK;
1403 }
1404
1405 OCStackResult SaveDeviceInfo(OCDeviceInfo info)
1406 {
1407     OCStackResult res = OC_STACK_OK;
1408
1409     DeleteDeviceInfo();
1410
1411     res = DeepCopyDeviceInfo(info);
1412
1413     VERIFY_SUCCESS(res, OC_STACK_OK);
1414
1415     if (OCGetServerInstanceIDString() == NULL)
1416     {
1417         OIC_LOG(INFO, TAG, "Device ID generation failed");
1418         res =  OC_STACK_ERROR;
1419         goto exit;
1420     }
1421
1422     OIC_LOG(INFO, TAG, "Device initialized successfully.");
1423     return OC_STACK_OK;
1424
1425 exit:
1426     DeleteDeviceInfo();
1427     return res;
1428 }