resource/csdk/stack/src/ocresource.c

   1 //******************************************************************
   2 //
   3 // Copyright 2014 Intel Mobile Communications GmbH All Rights Reserved.
   4 //
   5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   6 //
   7 // Licensed under the Apache License, Version 2.0 (the "License");
   8 // you may not use this file except in compliance with the License.
   9 // You may obtain a copy of the License at
  10 //
  11 //      http://www.apache.org/licenses/LICENSE-2.0
  12 //
  13 // Unless required by applicable law or agreed to in writing, software
  14 // distributed under the License is distributed on an "AS IS" BASIS,
  15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 // See the License for the specific language governing permissions and
  17 // limitations under the License.
  18 //
  19 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  20
  21 // Defining _POSIX_C_SOURCE macro with 200112L (or greater) as value
  22 // causes header files to expose definitions
  23 // corresponding to the POSIX.1-2001 base
  24 // specification (excluding the XSI extension).
  25 // For POSIX.1-2001 base specification,
  26 // Refer http://pubs.opengroup.org/onlinepubs/009695399/
  27 #define _POSIX_C_SOURCE 200112L
  28
  29 #ifdef WITH_STRING_H
  30 #include <string.h>
  31 #endif
  32 #ifdef WITH_STRINGS_H
  33 #include <strings.h>
  34 #endif
  35
  36 #include "ocresource.h"
  37 #include "ocresourcehandler.h"
  38 #include "ocobserve.h"
  39 #include "occollection.h"
  40 #include "oic_malloc.h"
  41 #include "oic_string.h"
  42 #include "logger.h"
  43 #include "cJSON.h"
  44 #include "ocpayload.h"
  45 #include "secureresourcemanager.h"
  46 #include "cacommon.h"
  47 #include "cainterface.h"
  48 #include "rdpayload.h"
  49 #include "ocpayload.h"
  50
  51 #ifdef WITH_RD
  52 #include "rd_server.h"
  53 #endif
  54
  55 #ifdef ROUTING_GATEWAY
  56 #include "routingmanager.h"
  57 #endif
  58
  59 /// Module Name
  60 #define TAG "OIC_RI_RESOURCE"
  61
  62 #define VERIFY_SUCCESS(op, successCode) { if (op != successCode) \
  63             {OIC_LOG_V(FATAL, TAG, "%s failed!!", #op); goto exit;} }
  64
  65 #define VERIFY_NON_NULL(arg, logLevel, retVal) { if (!(arg)) { OIC_LOG((logLevel), \
  66              TAG, #arg " is NULL"); return (retVal); } }
  67
  68 #include "platform_features.h"
  69
  70 extern OCResource *headResource;
  71 static OCPlatformInfo savedPlatformInfo = {0};
  72 static OCDeviceInfo savedDeviceInfo = {0};
  73
  74 /**
  75  * Prepares a Payload for response.
  76  */
  77 static OCStackResult BuildVirtualResourceResponse(const OCResource *resourcePtr,
  78                                                   OCDiscoveryPayload* payload,
  79                                                   OCDevAddr *endpoint,
  80                                                   bool rdResponse);
  81
  82 //-----------------------------------------------------------------------------
  83 // Default resource entity handler function
  84 //-----------------------------------------------------------------------------
  85 OCEntityHandlerResult defaultResourceEHandler(OCEntityHandlerFlag flag,
  86         OCEntityHandlerRequest * request, void* callbackParam)
  87 {
  88     //TODO ("Implement me!!!!");
  89     // TODO:  remove silence unused param warnings
  90     (void) flag;
  91     (void) request;
  92     (void) callbackParam;
  93     return  OC_EH_OK; // Making sure that the Default EH and the Vendor EH have matching signatures
  94 }
  95
  96 /* This method will retrieve the port at which the secure resource is hosted */
  97 static OCStackResult GetSecurePortInfo(OCDevAddr *endpoint, uint16_t *port)
  98 {
  99     uint16_t p = 0;
 100
 101     if (endpoint->adapter == OC_ADAPTER_IP)
 102     {
 103         if (endpoint->flags & OC_IP_USE_V6)
 104         {
 105             p = caglobals.ip.u6s.port;
 106         }
 107         else if (endpoint->flags & OC_IP_USE_V4)
 108         {
 109             p = caglobals.ip.u4s.port;
 110         }
 111     }
 112
 113     *port = p;
 114     return OC_STACK_OK;
 115 }
 116
 117 #ifdef TCP_ADAPTER
 118 /* This method will retrieve the tcp port */
 119 static OCStackResult GetTCPPortInfo(OCDevAddr *endpoint, uint16_t *port)
 120 {
 121     uint16_t p = 0;
 122
 123     if (endpoint->adapter == OC_ADAPTER_IP)
 124     {
 125         if (endpoint->flags & OC_IP_USE_V4)
 126         {
 127             p = caglobals.tcp.ipv4.port;
 128         }
 129         else if (endpoint->flags & OC_IP_USE_V6)
 130         {
 131             p = caglobals.tcp.ipv6.port;
 132         }
 133     }
 134
 135     *port = p;
 136     return OC_STACK_OK;
 137 }
 138 #endif
 139
 140 /*
 141  * Function will extract 0, 1 or 2 filters from query.
 142  * More than 2 filters or unsupported filters will result in error.
 143  * If both filters are of the same supported type, the 2nd one will be picked.
 144  * Resource and device filters in the SAME query are NOT validated
 145  * and resources will likely not clear filters.
 146  */
 147 static OCStackResult ExtractFiltersFromQuery(char *query, char **filterOne, char **filterTwo)
 148 {
 149
 150     char *key = NULL;
 151     char *value = NULL;
 152     char *restOfQuery = NULL;
 153     int numKeyValuePairsParsed = 0;
 154
 155     *filterOne = NULL;
 156     *filterTwo = NULL;
 157
 158     OIC_LOG_V(INFO, TAG, "Extracting params from %s", query);
 159
 160     char *keyValuePair = strtok_r (query, OC_QUERY_SEPARATOR, &restOfQuery);
 161
 162     while(keyValuePair)
 163     {
 164         if (numKeyValuePairsParsed >= 2)
 165         {
 166             OIC_LOG(ERROR, TAG, "More than 2 queries params in URI.");
 167             return OC_STACK_INVALID_QUERY;
 168         }
 169
 170         key = strtok_r(keyValuePair, OC_KEY_VALUE_DELIMITER, &value);
 171
 172         if (!key || !value)
 173         {
 174             return OC_STACK_INVALID_QUERY;
 175         }
 176         else if (strncasecmp(key, OC_RSRVD_INTERFACE, sizeof(OC_RSRVD_INTERFACE) - 1) == 0)
 177         {
 178             *filterOne = value;     // if
 179         }
 180         else if (strncasecmp(key, OC_RSRVD_RESOURCE_TYPE, sizeof(OC_RSRVD_INTERFACE) - 1) == 0)
 181         {
 182             *filterTwo = value;     // rt
 183         }
 184         else
 185         {
 186             OIC_LOG_V(ERROR, TAG, "Unsupported query key: %s", key);
 187             return OC_STACK_INVALID_QUERY;
 188         }
 189         ++numKeyValuePairsParsed;
 190
 191         keyValuePair = strtok_r(NULL, OC_QUERY_SEPARATOR, &restOfQuery);
 192     }
 193
 194     OIC_LOG_V(INFO, TAG, "Extracted params if: %s and rt: %s.", *filterOne, *filterTwo);
 195     return OC_STACK_OK;
 196 }
 197
 198 static OCVirtualResources GetTypeOfVirtualURI(const char *uriInRequest)
 199 {
 200     if (strcmp(uriInRequest, OC_RSRVD_WELL_KNOWN_URI) == 0)
 201     {
 202         return OC_WELL_KNOWN_URI;
 203     }
 204     else if (strcmp(uriInRequest, OC_RSRVD_DEVICE_URI) == 0)
 205     {
 206         return OC_DEVICE_URI;
 207     }
 208     else if (strcmp(uriInRequest, OC_RSRVD_PLATFORM_URI) == 0)
 209     {
 210         return OC_PLATFORM_URI;
 211     }
 212     else if (strcmp(uriInRequest, OC_RSRVD_RESOURCE_TYPES_URI) == 0)
 213     {
 214         return OC_RESOURCE_TYPES_URI;
 215     }
 216 #ifdef ROUTING_GATEWAY
 217     else if (0 == strcmp(uriInRequest, OC_RSRVD_GATEWAY_URI))
 218     {
 219         return OC_GATEWAY_URI;
 220     }
 221 #endif
 222 #ifdef WITH_PRESENCE
 223     else if (strcmp(uriInRequest, OC_RSRVD_PRESENCE_URI) == 0)
 224     {
 225         return OC_PRESENCE;
 226     }
 227 #endif //WITH_PRESENCE
 228     return OC_UNKNOWN_URI;
 229 }
 230
 231 static OCStackResult getQueryParamsForFiltering (OCVirtualResources uri, char *query,
 232                                             char **filterOne, char **filterTwo)
 233 {
 234     if(!filterOne || !filterTwo)
 235     {
 236         return OC_STACK_INVALID_PARAM;
 237     }
 238
 239     *filterOne = NULL;
 240     *filterTwo = NULL;
 241
 242     #ifdef WITH_PRESENCE
 243     if (uri == OC_PRESENCE)
 244     {
 245         //Nothing needs to be done, except for pass a OC_PRESENCE query through as OC_STACK_OK.
 246         OIC_LOG(INFO, TAG, "OC_PRESENCE Request for virtual resource.");
 247         return OC_STACK_OK;
 248     }
 249     #endif
 250
 251     OCStackResult result = OC_STACK_OK;
 252
 253     if (query && *query)
 254     {
 255         result = ExtractFiltersFromQuery(query, filterOne, filterTwo);
 256     }
 257
 258     return result;
 259 }
 260
 261 OCStackResult BuildResponseRepresentation(const OCResource *resourcePtr,
 262                     OCRepPayload** payload)
 263 {
 264     OCRepPayload *tempPayload = OCRepPayloadCreate();
 265
 266     if (!resourcePtr)
 267     {
 268         OCRepPayloadDestroy(tempPayload);
 269         return OC_STACK_INVALID_PARAM;
 270     }
 271
 272     if(!tempPayload)
 273     {
 274         return OC_STACK_NO_MEMORY;
 275     }
 276
 277     OCRepPayloadSetUri(tempPayload, resourcePtr->uri);
 278
 279     OCResourceType *resType = resourcePtr->rsrcType;
 280     while(resType)
 281     {
 282         OCRepPayloadAddResourceType(tempPayload, resType->resourcetypename);
 283         resType = resType->next;
 284     }
 285
 286     OCResourceInterface *resInterface = resourcePtr->rsrcInterface;
 287     while(resInterface)
 288     {
 289         OCRepPayloadAddInterface(tempPayload, resInterface->name);
 290         resInterface = resInterface->next;
 291     }
 292
 293     OCAttribute *resAttrib = resourcePtr->rsrcAttributes;
 294     while(resAttrib)
 295     {
 296         OCRepPayloadSetPropString(tempPayload, resAttrib->attrName,
 297                                 resAttrib->attrValue);
 298         resAttrib = resAttrib->next;
 299     }
 300
 301     if(!*payload)
 302     {
 303         *payload = tempPayload;
 304     }
 305     else
 306     {
 307         OCRepPayloadAppend(*payload, tempPayload);
 308     }
 309
 310     return OC_STACK_OK;
 311 }
 312
 313 OCStackResult BuildVirtualResourceResponse(const OCResource *resourcePtr,
 314                         OCDiscoveryPayload *payload, OCDevAddr *devAddr, bool rdResponse)
 315 {
 316     if (!resourcePtr || !payload)
 317     {
 318         return OC_STACK_INVALID_PARAM;
 319     }
 320     uint16_t securePort = 0;
 321     if (resourcePtr->resourceProperties & OC_SECURE)
 322     {
 323        if (GetSecurePortInfo(devAddr, &securePort) != OC_STACK_OK)
 324        {
 325            securePort = 0;
 326        }
 327     }
 328
 329     if (rdResponse)
 330     {
 331         securePort = devAddr->port;
 332     }
 333
 334     uint16_t tcpPort = 0;
 335 #ifdef TCP_ADAPTER
 336     if (GetTCPPortInfo(devAddr, &tcpPort) != OC_STACK_OK)
 337     {
 338         tcpPort = 0;
 339     }
 340     OCDiscoveryPayloadAddResource(payload, resourcePtr, securePort, tcpPort);
 341 #else
 342     OCDiscoveryPayloadAddResource(payload, resourcePtr, securePort);
 343 #endif
 344
 345     return OC_STACK_OK;
 346 }
 347
 348 uint8_t IsCollectionResource (OCResource *resource)
 349 {
 350     if(!resource)
 351     {
 352         return 0;
 353     }
 354
 355     if(resource->rsrcChildResourcesHead != NULL)
 356     {
 357         return 1;
 358     }
 359
 360     return 0;
 361 }
 362
 363 OCResource *FindResourceByUri(const char* resourceUri)
 364 {
 365     if(!resourceUri)
 366     {
 367         return NULL;
 368     }
 369
 370     OCResource * pointer = headResource;
 371     while (pointer)
 372     {
 373         if (strcmp(resourceUri, pointer->uri) == 0)
 374         {
 375             return pointer;
 376         }
 377         pointer = pointer->next;
 378     }
 379     OIC_LOG_V(INFO, TAG, "Resource %s not found", resourceUri);
 380     return NULL;
 381 }
 382
 383
 384 OCStackResult DetermineResourceHandling (const OCServerRequest *request,
 385                                          ResourceHandling *handling,
 386                                          OCResource **resource)
 387 {
 388     if(!request || !handling || !resource)
 389     {
 390         return OC_STACK_INVALID_PARAM;
 391     }
 392
 393     OIC_LOG_V(INFO, TAG, "DetermineResourceHandling for %s", request->resourceUrl);
 394
 395     // Check if virtual resource
 396     if (GetTypeOfVirtualURI(request->resourceUrl) != OC_UNKNOWN_URI)
 397     {
 398         OIC_LOG_V (INFO, TAG, "%s is virtual", request->resourceUrl);
 399         *handling = OC_RESOURCE_VIRTUAL;
 400         *resource = headResource;
 401         return OC_STACK_OK;
 402     }
 403     if (strlen((const char*)(request->resourceUrl)) == 0)
 404     {
 405         // Resource URL not specified
 406         *handling = OC_RESOURCE_NOT_SPECIFIED;
 407         return OC_STACK_NO_RESOURCE;
 408     }
 409     else
 410     {
 411         OCResource *resourcePtr = FindResourceByUri((const char*)request->resourceUrl);
 412         *resource = resourcePtr;
 413         if (!resourcePtr)
 414         {
 415             if(defaultDeviceHandler)
 416             {
 417                 *handling = OC_RESOURCE_DEFAULT_DEVICE_ENTITYHANDLER;
 418                 return OC_STACK_OK;
 419             }
 420
 421             // Resource does not exist
 422             // and default device handler does not exist
 423             *handling = OC_RESOURCE_NOT_SPECIFIED;
 424             return OC_STACK_NO_RESOURCE;
 425         }
 426
 427         if (IsCollectionResource (resourcePtr))
 428         {
 429             // Collection resource
 430             if (resourcePtr->entityHandler != defaultResourceEHandler)
 431             {
 432                 *handling = OC_RESOURCE_COLLECTION_WITH_ENTITYHANDLER;
 433                 return OC_STACK_OK;
 434             }
 435             else
 436             {
 437                 *handling = OC_RESOURCE_COLLECTION_DEFAULT_ENTITYHANDLER;
 438                 return OC_STACK_OK;
 439             }
 440         }
 441         else
 442         {
 443             // Resource not a collection
 444             if (resourcePtr->entityHandler != defaultResourceEHandler)
 445             {
 446                 *handling = OC_RESOURCE_NOT_COLLECTION_WITH_ENTITYHANDLER;
 447                 return OC_STACK_OK;
 448             }
 449             else
 450             {
 451                 *handling = OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER;
 452                 return OC_STACK_OK;
 453             }
 454         }
 455     }
 456 }
 457
 458 OCStackResult EntityHandlerCodeToOCStackCode(OCEntityHandlerResult ehResult)
 459 {
 460     OCStackResult result;
 461
 462     switch (ehResult)
 463     {
 464         case OC_EH_OK:
 465             result = OC_STACK_OK;
 466             break;
 467         case OC_EH_SLOW:
 468             result = OC_STACK_SLOW_RESOURCE;
 469             break;
 470         case OC_EH_ERROR:
 471             result = OC_STACK_ERROR;
 472             break;
 473         case OC_EH_FORBIDDEN:
 474             result = OC_STACK_RESOURCE_ERROR;
 475             break;
 476         case OC_EH_RESOURCE_CREATED:
 477             result = OC_STACK_RESOURCE_CREATED;
 478             break;
 479         case OC_EH_RESOURCE_DELETED:
 480             result = OC_STACK_RESOURCE_DELETED;
 481             break;
 482         case OC_EH_CHANGED:
 483             result = OC_STACK_RESOURCE_CHANGED;
 484             break;
 485         case OC_EH_RESOURCE_NOT_FOUND:
 486             result = OC_STACK_NO_RESOURCE;
 487             break;
 488         default:
 489             result = OC_STACK_ERROR;
 490     }
 491
 492     return result;
 493 }
 494
 495 static bool resourceMatchesRTFilter(OCResource *resource, char *resourceTypeFilter)
 496 {
 497     if (!resource)
 498     {
 499         return false;
 500     }
 501
 502     // Null or empty is analogous to no filter.
 503     if (resourceTypeFilter == NULL || *resourceTypeFilter == 0)
 504     {
 505         return true;
 506     }
 507
 508     OCResourceType *resourceTypePtr = resource->rsrcType;
 509
 510     while (resourceTypePtr)
 511     {
 512         if (strcmp (resourceTypePtr->resourcetypename, resourceTypeFilter) == 0)
 513         {
 514             return true;
 515         }
 516         resourceTypePtr = resourceTypePtr->next;
 517     }
 518
 519     OIC_LOG_V(INFO, TAG, "%s does not contain rt=%s.", resource->uri, resourceTypeFilter);
 520     return false;
 521 }
 522
 523 static bool resourceMatchesIFFilter(OCResource *resource, char *interfaceFilter)
 524 {
 525     if (!resource)
 526     {
 527         return false;
 528     }
 529
 530     // Null or empty is analogous to no filter.
 531     if (interfaceFilter == NULL || *interfaceFilter == 0)
 532     {
 533         return true;
 534     }
 535
 536     OCResourceInterface *interfacePtr = resource->rsrcInterface;
 537
 538     while (interfacePtr)
 539     {
 540         if ((strcmp (interfacePtr->name, interfaceFilter) == 0) &&
 541             (strcmp (OC_RSRVD_INTERFACE_LL, interfaceFilter) == 0 ||
 542              strcmp (OC_RSRVD_INTERFACE_DEFAULT, interfaceFilter) == 0))
 543         {
 544             return true;
 545         }
 546         interfacePtr = interfacePtr->next;
 547     }
 548
 549     OIC_LOG_V(INFO, TAG, "%s does not contain if=%s.", resource->uri, interfaceFilter);
 550     return false;
 551 }
 552
 553 /*
 554  * If the filters are null, they will be assumed to NOT be present
 555  * and the resource will not be matched against them.
 556  * Function will return true if all non null AND non empty filters passed in find a match.
 557  */
 558 static bool includeThisResourceInResponse(OCResource *resource,
 559                                           char *interfaceFilter,
 560                                           char *resourceTypeFilter)
 561 {
 562     if (!resource)
 563     {
 564         OIC_LOG(ERROR, TAG, "Invalid resource");
 565         return false;
 566     }
 567
 568     if (resource->resourceProperties & OC_EXPLICIT_DISCOVERABLE)
 569     {
 570         /*
 571          * At least one valid filter should be available to
 572          * include the resource in discovery response
 573          */
 574         if (!(resourceTypeFilter && *resourceTypeFilter))
 575         {
 576             OIC_LOG_V(INFO, TAG, "%s no query string for EXPLICIT_DISCOVERABLE \
 577                 resource", resource->uri);
 578             return false;
 579         }
 580     }
 581     else if ( !(resource->resourceProperties & OC_ACTIVE) ||
 582          !(resource->resourceProperties & OC_DISCOVERABLE))
 583     {
 584         OIC_LOG_V(INFO, TAG, "%s not ACTIVE or DISCOVERABLE", resource->uri);
 585         return false;
 586     }
 587
 588     return resourceMatchesIFFilter(resource, interfaceFilter) &&
 589            resourceMatchesRTFilter(resource, resourceTypeFilter);
 590
 591 }
 592
 593 OCStackResult SendNonPersistantDiscoveryResponse(OCServerRequest *request, OCResource *resource,
 594                                 OCPayload *discoveryPayload, OCEntityHandlerResult ehResult)
 595 {
 596     OCEntityHandlerResponse response = {0};
 597
 598     response.ehResult = ehResult;
 599     response.payload = discoveryPayload;
 600     response.persistentBufferFlag = 0;
 601     response.requestHandle = (OCRequestHandle) request;
 602     response.resourceHandle = (OCResourceHandle) resource;
 603
 604     return OCDoResponse(&response);
 605 }
 606
 607 #ifdef WITH_RD
 608 static OCStackResult checkResourceExistsAtRD(const char *interfaceType, const char *resourceType,
 609      OCResource **payload, OCDevAddr *devAddr)
 610 {
 611     OCResourceCollectionPayload *repPayload;
 612     if (!payload)
 613     {
 614         return OC_STACK_ERROR;
 615     }
 616     if (OCRDCheckPublishedResource(interfaceType, resourceType, &repPayload, devAddr) == OC_STACK_OK)
 617     {
 618         if (!repPayload)
 619         {
 620             return OC_STACK_ERROR;
 621         }
 622         OCResource *ptr = ((OCResource *) OICCalloc(1, sizeof(OCResource)));
 623         if (!ptr)
 624         {
 625            return OC_STACK_NO_MEMORY;
 626         }
 627
 628         ptr->uri = OICStrdup(repPayload->setLinks->href);
 629         if (!ptr->uri)
 630         {
 631            return OC_STACK_NO_MEMORY;
 632         }
 633         OCStringLL *rt = repPayload->setLinks->rt;
 634         while (rt)
 635         {
 636             OCResourceType *temp = (OCResourceType *) OICCalloc(1, sizeof(OCResourceType));
 637             if(!temp)
 638             {
 639                 OICFree(ptr->uri);
 640                 return OC_STACK_NO_MEMORY;
 641             }
 642             temp->next = NULL;
 643             temp->resourcetypename = OICStrdup(rt->value);
 644             if (!ptr->rsrcType)
 645             {
 646                 ptr->rsrcType = temp;
 647             }
 648             else
 649             {
 650                 OCResourceType *type = ptr->rsrcType;
 651                 while (type->next)
 652                 {
 653                     type = type->next;
 654                 }
 655                 type->next = temp;
 656             }
 657             rt = rt->next;
 658         }
 659
 660         OCStringLL *itf = repPayload->setLinks->itf;
 661         while (itf)
 662         {
 663             OCResourceInterface *temp = (OCResourceInterface *) OICCalloc(1, sizeof(OCResourceInterface));
 664             if (!temp)
 665             {
 666                 OICFree(ptr->uri);
 667
 668                 return OC_STACK_NO_MEMORY;
 669             }
 670             temp->next = NULL;
 671             temp->name = OICStrdup(itf->value);
 672             if (!ptr->rsrcInterface)
 673             {
 674                 ptr->rsrcInterface = temp;
 675             }
 676             else
 677             {
 678                 OCResourceInterface *type = ptr->rsrcInterface;
 679                 while (type->next)
 680                 {
 681                     type = type->next;
 682                 }
 683                 type->next = temp;
 684             }
 685             itf = itf->next;
 686         }
 687
 688         ptr->resourceProperties = (OCResourceProperty) repPayload->tags->bitmap;
 689
 690         OCFreeCollectionResource(repPayload);
 691         *payload = ptr;
 692         return OC_STACK_OK;
 693     }
 694     else
 695     {
 696         OIC_LOG_V(ERROR, TAG, "The resource type or interface type doe not exist \
 697                              on the resource directory");
 698     }
 699     return OC_STACK_ERROR;
 700 }
 701 #endif
 702
 703 static OCStackResult HandleVirtualResource (OCServerRequest *request, OCResource* resource)
 704 {
 705     if (!request || !resource)
 706     {
 707         return OC_STACK_INVALID_PARAM;
 708     }
 709
 710     OCStackResult discoveryResult = OC_STACK_ERROR;
 711     OCPayload* payload = NULL;
 712
 713     OIC_LOG(INFO, TAG, "Entering HandleVirtualResource");
 714
 715     OCVirtualResources virtualUriInRequest = GetTypeOfVirtualURI (request->resourceUrl);
 716
 717     // Step 1: Generate the response to discovery request
 718     if (virtualUriInRequest == OC_WELL_KNOWN_URI)
 719     {
 720         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 721         {
 722             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 723             return OC_STACK_UNAUTHORIZED_REQ;
 724         }
 725
 726         char *interfaceQuery = NULL;
 727         char *resourceTypeQuery = NULL;
 728
 729         discoveryResult = getQueryParamsForFiltering (virtualUriInRequest, request->query,
 730                 &interfaceQuery, &resourceTypeQuery);
 731         bool interfaceQueryAllocated = false;
 732         if (!interfaceQuery && !resourceTypeQuery)
 733         {
 734             interfaceQueryAllocated = true;
 735             interfaceQuery = OICStrdup(OC_RSRVD_INTERFACE_LL);
 736         }
 737
 738         if (discoveryResult == OC_STACK_OK)
 739         {
 740             payload = (OCPayload *)OCDiscoveryPayloadCreate();
 741
 742             if (payload)
 743             {
 744                 OCDiscoveryPayload *discPayload = (OCDiscoveryPayload *)payload;
 745                 discPayload->sid = (char *)OICCalloc(1, UUID_STRING_SIZE);
 746                 VERIFY_NON_NULL(discPayload->sid, ERROR, OC_STACK_NO_MEMORY);
 747
 748                 const char* uid = OCGetServerInstanceIDString();
 749                 if (uid)
 750                 {
 751                     memcpy(discPayload->sid, uid, UUID_STRING_SIZE);
 752                 }
 753
 754                 if (!resourceTypeQuery && interfaceQuery && (0 == strcmp(interfaceQuery, OC_RSRVD_INTERFACE_LL)))
 755                 {
 756                     for (; resource && discoveryResult == OC_STACK_OK; resource = resource->next)
 757                     {
 758                         bool result = false;
 759                         if (resource->resourceProperties & OC_DISCOVERABLE)
 760                         {
 761                             result = true;
 762                         }
 763
 764                         if (result)
 765                         {
 766                             discoveryResult = BuildVirtualResourceResponse(resource,
 767                             discPayload, &request->devAddr, false);
 768                         }
 769                     }
 770                 }
 771                 else
 772                 {
 773                     if (interfaceQuery && (0 != strcmp(interfaceQuery, OC_RSRVD_INTERFACE_LL)))
 774                     {
 775                         discPayload->uri = OICStrdup(OC_RSRVD_WELL_KNOWN_URI);
 776                         VERIFY_NON_NULL(discPayload->uri, ERROR, OC_STACK_NO_MEMORY);
 777                         if (savedDeviceInfo.deviceName)
 778                         {
 779                             discPayload->name = OICStrdup(savedDeviceInfo.deviceName);
 780                             VERIFY_NON_NULL(discPayload->name, ERROR, OC_STACK_NO_MEMORY);
 781                         }
 782                         discPayload->type = (OCStringLL*)OICCalloc(1, sizeof(OCStringLL));
 783                         VERIFY_NON_NULL(discPayload->type, ERROR, OC_STACK_NO_MEMORY);
 784                         discPayload->type->value = OICStrdup(OC_RSRVD_RESOURCE_TYPE_RES);
 785                         VERIFY_NON_NULL(discPayload->type->value, ERROR, OC_STACK_NO_MEMORY);
 786                         OCResourcePayloadAddStringLL(&discPayload->iface, OC_RSRVD_INTERFACE_LL);
 787                         OCResourcePayloadAddStringLL(&discPayload->iface, OC_RSRVD_INTERFACE_DEFAULT);
 788                         VERIFY_NON_NULL(discPayload->iface, ERROR, OC_STACK_NO_MEMORY);
 789                     }
 790                     bool foundResourceAtRD = false;
 791                     for (;resource && discoveryResult == OC_STACK_OK; resource = resource->next)
 792                     {
 793 #ifdef WITH_RD
 794                         if (strcmp(resource->uri, OC_RSRVD_RD_URI) == 0)
 795                         {
 796                             OCResource *resource1 = NULL;
 797                             OCDevAddr devAddr;
 798                             discoveryResult = checkResourceExistsAtRD(interfaceQuery,
 799                                 resourceTypeQuery, &resource1, &devAddr);
 800                             if (discoveryResult != OC_STACK_OK)
 801                             {
 802                                  break;
 803                             }
 804                             discoveryResult = BuildVirtualResourceResponse(resource1,
 805                                 discPayload, &devAddr, true);
 806                             if (payload)
 807                             {
 808                                 discPayload->baseURI = OICStrdup(devAddr.addr);
 809                             }
 810                             OICFree(resource1->uri);
 811                             for (OCResourceType *rsrcRt = resource1->rsrcType, *rsrcRtNext = NULL; rsrcRt; )
 812                             {
 813                                 rsrcRtNext = rsrcRt->next;
 814                                 OICFree(rsrcRt->resourcetypename);
 815                                 OICFree(rsrcRt);
 816                                 rsrcRt = rsrcRtNext;
 817                             }
 818
 819                             for (OCResourceInterface *rsrcPtr = resource1->rsrcInterface, *rsrcNext = NULL; rsrcPtr; )
 820                             {
 821                                 rsrcNext = rsrcPtr->next;
 822                                 OICFree(rsrcPtr->name);
 823                                 OICFree(rsrcPtr);
 824                                 rsrcPtr = rsrcNext;
 825                             }
 826                             foundResourceAtRD = true;
 827                         }
 828 #endif
 829                         if (!foundResourceAtRD && includeThisResourceInResponse(resource, interfaceQuery, resourceTypeQuery))
 830                         {
 831                             discoveryResult = BuildVirtualResourceResponse(resource,
 832                                 discPayload, &request->devAddr, false);
 833                         }
 834                     }
 835                     // Set discoveryResult appropriately if no 'valid' resources are available
 836                     if (discPayload->resources == NULL && !foundResourceAtRD)
 837                     {
 838                         discoveryResult = OC_STACK_NO_RESOURCE;
 839                     }
 840                 }
 841             }
 842             else
 843             {
 844                 discoveryResult = OC_STACK_NO_MEMORY;
 845             }
 846         }
 847         else
 848         {
 849             OIC_LOG_V(ERROR, TAG, "Error (%d) parsing query.", discoveryResult);
 850         }
 851         if (interfaceQueryAllocated)
 852         {
 853             OICFree(interfaceQuery);
 854         }
 855     }
 856     else if (virtualUriInRequest == OC_DEVICE_URI)
 857     {
 858         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 859         {
 860             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 861             return OC_STACK_UNAUTHORIZED_REQ;
 862         }
 863
 864         const char* deviceId = OCGetServerInstanceIDString();
 865         if (!deviceId)
 866         {
 867             discoveryResult = OC_STACK_ERROR;
 868         }
 869         else
 870         {
 871             char *dataModelVersions = OCCreateString(savedDeviceInfo.dataModelVersions);
 872             if (!dataModelVersions)
 873             {
 874                 discoveryResult = OC_STACK_NO_MEMORY;
 875             }
 876             else
 877             {
 878                 payload = (OCPayload*) OCDevicePayloadCreate(deviceId, savedDeviceInfo.deviceName,
 879                     savedDeviceInfo.types, savedDeviceInfo.specVersion, dataModelVersions);
 880                 if (!payload)
 881                 {
 882                      discoveryResult = OC_STACK_NO_MEMORY;
 883                 }
 884                 else
 885                 {
 886                      discoveryResult = OC_STACK_OK;
 887                 }
 888                 OICFree(dataModelVersions);
 889             }
 890         }
 891     }
 892     else if (virtualUriInRequest == OC_PLATFORM_URI)
 893     {
 894         if (request->method == OC_REST_PUT || request->method == OC_REST_POST || request->method == OC_REST_DELETE)
 895         {
 896             OIC_LOG_V(ERROR, TAG, "Resource : %s not permitted for method: %d", request->resourceUrl, request->method);
 897             return OC_STACK_UNAUTHORIZED_REQ;
 898         }
 899
 900         payload = (OCPayload*)OCPlatformPayloadCreate(&savedPlatformInfo);
 901         if (!payload)
 902         {
 903             discoveryResult = OC_STACK_NO_MEMORY;
 904         }
 905         else
 906         {
 907             discoveryResult = OC_STACK_OK;
 908         }
 909     }
 910 #ifdef ROUTING_GATEWAY
 911     else if (OC_GATEWAY_URI == virtualUriInRequest)
 912     {
 913         // Received request for a gateway
 914         OIC_LOG(INFO, TAG, "Request is for Gateway Virtual Request");
 915         discoveryResult = RMHandleGatewayRequest(request, resource);
 916
 917     }
 918 #endif
 919
 920     /**
 921      * Step 2: Send the discovery response
 922      *
 923      * Iotivity should respond to discovery requests in below manner:
 924      * 1)If query filter matching fails and discovery request is multicast,
 925      *   it should NOT send any response.
 926      * 2)If query filter matching fails and discovery request is unicast,
 927      *   it should send an error(RESOURCE_NOT_FOUND - 404) response.
 928      * 3)If Server does not have any 'DISCOVERABLE' resources and discovery
 929      *   request is multicast, it should NOT send any response.
 930      * 4)If Server does not have any 'DISCOVERABLE' resources and discovery
 931      *   request is unicast, it should send an error(RESOURCE_NOT_FOUND - 404) response.
 932      */
 933
 934 #ifdef WITH_PRESENCE
 935     if ((virtualUriInRequest == OC_PRESENCE) &&
 936         (resource->resourceProperties & OC_ACTIVE))
 937     {
 938         // Presence uses observer notification api to respond via SendPresenceNotification.
 939         SendPresenceNotification(resource->rsrcType, OC_PRESENCE_TRIGGER_CHANGE);
 940     }
 941     else
 942     #endif
 943 #ifdef ROUTING_GATEWAY
 944     // Gateway uses the RMHandleGatewayRequest to respond to the request.
 945     if (OC_GATEWAY_URI != virtualUriInRequest)
 946 #endif
 947     {
 948         if(discoveryResult == OC_STACK_OK)
 949         {
 950             SendNonPersistantDiscoveryResponse(request, resource, payload, OC_EH_OK);
 951         }
 952         else if(((request->devAddr.flags &  OC_MULTICAST) == false) &&
 953             (request->devAddr.adapter != OC_ADAPTER_RFCOMM_BTEDR) &&
 954             (request->devAddr.adapter != OC_ADAPTER_GATT_BTLE))
 955         {
 956             OIC_LOG_V(ERROR, TAG, "Sending a (%d) error to (%d) discovery request",
 957                 discoveryResult, virtualUriInRequest);
 958             SendNonPersistantDiscoveryResponse(request, resource, NULL,
 959                 (discoveryResult == OC_STACK_NO_RESOURCE) ? OC_EH_RESOURCE_NOT_FOUND : OC_EH_ERROR);
 960         }
 961         else
 962         {
 963             // Ignoring the discovery request as per RFC 7252, Section #8.2
 964             OIC_LOG(INFO, TAG, "Silently ignoring the request since no useful data to send. ");
 965         }
 966     }
 967
 968     OCPayloadDestroy(payload);
 969
 970     return OC_STACK_OK;
 971 }
 972
 973 static OCStackResult
 974 HandleDefaultDeviceEntityHandler (OCServerRequest *request)
 975 {
 976     if(!request)
 977     {
 978         return OC_STACK_INVALID_PARAM;
 979     }
 980
 981     OCStackResult result = OC_STACK_OK;
 982     OCEntityHandlerResult ehResult = OC_EH_ERROR;
 983     OCEntityHandlerRequest ehRequest = {0};
 984
 985     OIC_LOG(INFO, TAG, "Entering HandleResourceWithDefaultDeviceEntityHandler");
 986     result = FormOCEntityHandlerRequest(&ehRequest,
 987                                         (OCRequestHandle) request,
 988                                         request->method,
 989                                         &request->devAddr,
 990                                         (OCResourceHandle) NULL, request->query,
 991                                         PAYLOAD_TYPE_REPRESENTATION,
 992                                         request->payload,
 993                                         request->payloadSize,
 994                                         request->numRcvdVendorSpecificHeaderOptions,
 995                                         request->rcvdVendorSpecificHeaderOptions,
 996                                         (OCObserveAction)request->observationOption,
 997                                         (OCObservationId)0,
 998                                         request->coapID);
 999     VERIFY_SUCCESS(result, OC_STACK_OK);
1000
1001     // At this point we know for sure that defaultDeviceHandler exists
1002     ehResult = defaultDeviceHandler(OC_REQUEST_FLAG, &ehRequest,
1003                                   (char*) request->resourceUrl, defaultDeviceHandlerCallbackParameter);
1004     if(ehResult == OC_EH_SLOW)
1005     {
1006         OIC_LOG(INFO, TAG, "This is a slow resource");
1007         request->slowFlag = 1;
1008     }
1009     else if(ehResult == OC_EH_ERROR)
1010     {
1011         FindAndDeleteServerRequest(request);
1012     }
1013     result = EntityHandlerCodeToOCStackCode(ehResult);
1014 exit:
1015     OCPayloadDestroy(ehRequest.payload);
1016     return result;
1017 }
1018
1019 static OCStackResult
1020 HandleResourceWithEntityHandler (OCServerRequest *request,
1021                                  OCResource *resource,
1022                                  uint8_t collectionResource)
1023 {
1024     if(!request || ! resource)
1025     {
1026         return OC_STACK_INVALID_PARAM;
1027     }
1028
1029     OCStackResult result = OC_STACK_ERROR;
1030     OCEntityHandlerResult ehResult = OC_EH_ERROR;
1031     OCEntityHandlerFlag ehFlag = OC_REQUEST_FLAG;
1032     ResourceObserver *resObs = NULL;
1033
1034     OCEntityHandlerRequest ehRequest = {0};
1035
1036     OIC_LOG(INFO, TAG, "Entering HandleResourceWithEntityHandler");
1037     OCPayloadType type = PAYLOAD_TYPE_REPRESENTATION;
1038     // check the security resource
1039     if (request && request->resourceUrl && SRMIsSecurityResourceURI(request->resourceUrl))
1040     {
1041         type = PAYLOAD_TYPE_SECURITY;
1042
1043     }
1044
1045     if (request && strcmp(request->resourceUrl, OC_RSRVD_RD_URI) == 0)
1046     {
1047         type = PAYLOAD_TYPE_RD;
1048     }
1049
1050     result = FormOCEntityHandlerRequest(&ehRequest,
1051                                         (OCRequestHandle)request,
1052                                         request->method,
1053                                         &request->devAddr,
1054                                         (OCResourceHandle)resource,
1055                                         request->query,
1056                                         type,
1057                                         request->payload,
1058                                         request->payloadSize,
1059                                         request->numRcvdVendorSpecificHeaderOptions,
1060                                         request->rcvdVendorSpecificHeaderOptions,
1061                                         (OCObserveAction)request->observationOption,
1062                                         0,
1063                                         request->coapID);
1064     VERIFY_SUCCESS(result, OC_STACK_OK);
1065
1066     if(ehRequest.obsInfo.action == OC_OBSERVE_NO_OPTION)
1067     {
1068         OIC_LOG(INFO, TAG, "No observation requested");
1069         ehFlag = OC_REQUEST_FLAG;
1070     }
1071     else if(ehRequest.obsInfo.action == OC_OBSERVE_REGISTER && !collectionResource)
1072     {
1073         OIC_LOG(INFO, TAG, "Observation registration requested");
1074
1075         ResourceObserver *obs = GetObserverUsingToken (request->requestToken,
1076                                     request->tokenLength);
1077
1078         if (obs)
1079         {
1080             OIC_LOG (INFO, TAG, "Observer with this token already present");
1081             OIC_LOG (INFO, TAG, "Possibly re-transmitted CON OBS request");
1082             OIC_LOG (INFO, TAG, "Not adding observer. Not responding to client");
1083             OIC_LOG (INFO, TAG, "The first request for this token is already ACKED.");
1084
1085             // server requests are usually free'd when the response is sent out
1086             // for the request in ocserverrequest.c : HandleSingleResponse()
1087             // Since we are making an early return and not responding, the server request
1088             // needs to be deleted.
1089             FindAndDeleteServerRequest (request);
1090             return OC_STACK_OK;
1091         }
1092
1093         result = GenerateObserverId(&ehRequest.obsInfo.obsId);
1094         VERIFY_SUCCESS(result, OC_STACK_OK);
1095
1096         result = AddObserver ((const char*)(request->resourceUrl),
1097                 (const char *)(request->query),
1098                 ehRequest.obsInfo.obsId, request->requestToken, request->tokenLength,
1099                 resource, request->qos, request->acceptFormat,
1100                 &request->devAddr);
1101
1102         if(result == OC_STACK_OK)
1103         {
1104             OIC_LOG(INFO, TAG, "Added observer successfully");
1105             request->observeResult = OC_STACK_OK;
1106             ehFlag = (OCEntityHandlerFlag)(OC_REQUEST_FLAG | OC_OBSERVE_FLAG);
1107         }
1108         else
1109         {
1110             // The error in observeResult for the request will be used when responding to this
1111             // request by omitting the observation option/sequence number.
1112             request->observeResult = OC_STACK_ERROR;
1113             OIC_LOG(ERROR, TAG, "Observer Addition failed");
1114             ehFlag = OC_REQUEST_FLAG;
1115             FindAndDeleteServerRequest(request);
1116             goto exit;
1117         }
1118
1119     }
1120     else if(ehRequest.obsInfo.action == OC_OBSERVE_DEREGISTER &&
1121             !collectionResource)
1122     {
1123         OIC_LOG(INFO, TAG, "Deregistering observation requested");
1124
1125         resObs = GetObserverUsingToken (request->requestToken, request->tokenLength);
1126
1127         if (NULL == resObs)
1128         {
1129             // Stack does not contain this observation request
1130             // Either token is incorrect or observation list is corrupted
1131             result = OC_STACK_ERROR;
1132             goto exit;
1133         }
1134         ehRequest.obsInfo.obsId = resObs->observeId;
1135         ehFlag = (OCEntityHandlerFlag)(ehFlag | OC_OBSERVE_FLAG);
1136
1137         result = DeleteObserverUsingToken (request->requestToken, request->tokenLength);
1138
1139         if(result == OC_STACK_OK)
1140         {
1141             OIC_LOG(INFO, TAG, "Removed observer successfully");
1142             request->observeResult = OC_STACK_OK;
1143         }
1144         else
1145         {
1146             request->observeResult = OC_STACK_ERROR;
1147             OIC_LOG(ERROR, TAG, "Observer Removal failed");
1148             FindAndDeleteServerRequest(request);
1149             goto exit;
1150         }
1151     }
1152     else
1153     {
1154         result = OC_STACK_ERROR;
1155         goto exit;
1156     }
1157
1158     ehResult = resource->entityHandler(ehFlag, &ehRequest, resource->entityHandlerCallbackParam);
1159     if(ehResult == OC_EH_SLOW)
1160     {
1161         OIC_LOG(INFO, TAG, "This is a slow resource");
1162         request->slowFlag = 1;
1163     }
1164     else if(ehResult == OC_EH_ERROR)
1165     {
1166         FindAndDeleteServerRequest(request);
1167     }
1168     result = EntityHandlerCodeToOCStackCode(ehResult);
1169 exit:
1170     OCPayloadDestroy(ehRequest.payload);
1171     return result;
1172 }
1173
1174 static OCStackResult
1175 HandleCollectionResourceDefaultEntityHandler (OCServerRequest *request,
1176                                               OCResource *resource)
1177 {
1178     if(!request || !resource)
1179     {
1180         return OC_STACK_INVALID_PARAM;
1181     }
1182
1183     OCStackResult result = OC_STACK_ERROR;
1184     OCEntityHandlerRequest ehRequest = {0};
1185
1186     result = FormOCEntityHandlerRequest(&ehRequest,
1187                                         (OCRequestHandle)request,
1188                                         request->method,
1189                                         &request->devAddr,
1190                                         (OCResourceHandle)resource,
1191                                         request->query,
1192                                         PAYLOAD_TYPE_REPRESENTATION,
1193                                         request->payload,
1194                                         request->payloadSize,
1195                                         request->numRcvdVendorSpecificHeaderOptions,
1196                                         request->rcvdVendorSpecificHeaderOptions,
1197                                         (OCObserveAction)request->observationOption,
1198                                         (OCObservationId)0,
1199                                         request->coapID);
1200     if(result == OC_STACK_OK)
1201     {
1202         result = DefaultCollectionEntityHandler (OC_REQUEST_FLAG, &ehRequest);
1203     }
1204
1205     OCPayloadDestroy(ehRequest.payload);
1206     return result;
1207 }
1208
1209 OCStackResult
1210 ProcessRequest(ResourceHandling resHandling, OCResource *resource, OCServerRequest *request)
1211 {
1212     OCStackResult ret = OC_STACK_OK;
1213
1214     switch (resHandling)
1215     {
1216         case OC_RESOURCE_VIRTUAL:
1217         {
1218             ret = HandleVirtualResource (request, resource);
1219             break;
1220         }
1221         case OC_RESOURCE_DEFAULT_DEVICE_ENTITYHANDLER:
1222         {
1223             ret = HandleDefaultDeviceEntityHandler(request);
1224             break;
1225         }
1226         case OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER:
1227         {
1228             OIC_LOG(INFO, TAG, "OC_RESOURCE_NOT_COLLECTION_DEFAULT_ENTITYHANDLER");
1229             return OC_STACK_ERROR;
1230         }
1231         case OC_RESOURCE_NOT_COLLECTION_WITH_ENTITYHANDLER:
1232         {
1233             ret = HandleResourceWithEntityHandler (request, resource, 0);
1234             break;
1235         }
1236         case OC_RESOURCE_COLLECTION_WITH_ENTITYHANDLER:
1237         {
1238             ret = HandleResourceWithEntityHandler (request, resource, 1);
1239             break;
1240         }
1241         case OC_RESOURCE_COLLECTION_DEFAULT_ENTITYHANDLER:
1242         {
1243             ret = HandleCollectionResourceDefaultEntityHandler (request, resource);
1244             break;
1245         }
1246         case OC_RESOURCE_NOT_SPECIFIED:
1247         {
1248             ret = OC_STACK_NO_RESOURCE;
1249             break;
1250         }
1251         default:
1252         {
1253             OIC_LOG(INFO, TAG, "Invalid Resource Determination");
1254             return OC_STACK_ERROR;
1255         }
1256     }
1257     return ret;
1258 }
1259
1260 void DeletePlatformInfo()
1261 {
1262     OIC_LOG(INFO, TAG, "Deleting platform info.");
1263
1264     OICFree(savedPlatformInfo.platformID);
1265     savedPlatformInfo.platformID = NULL;
1266
1267     OICFree(savedPlatformInfo.manufacturerName);
1268     savedPlatformInfo.manufacturerName = NULL;
1269
1270     OICFree(savedPlatformInfo.manufacturerUrl);
1271     savedPlatformInfo.manufacturerUrl = NULL;
1272
1273     OICFree(savedPlatformInfo.modelNumber);
1274     savedPlatformInfo.modelNumber = NULL;
1275
1276     OICFree(savedPlatformInfo.dateOfManufacture);
1277     savedPlatformInfo.dateOfManufacture = NULL;
1278
1279     OICFree(savedPlatformInfo.platformVersion);
1280     savedPlatformInfo.platformVersion = NULL;
1281
1282     OICFree(savedPlatformInfo.operatingSystemVersion);
1283     savedPlatformInfo.operatingSystemVersion = NULL;
1284
1285     OICFree(savedPlatformInfo.hardwareVersion);
1286     savedPlatformInfo.hardwareVersion = NULL;
1287
1288     OICFree(savedPlatformInfo.firmwareVersion);
1289     savedPlatformInfo.firmwareVersion = NULL;
1290
1291     OICFree(savedPlatformInfo.supportUrl);
1292     savedPlatformInfo.supportUrl = NULL;
1293
1294     OICFree(savedPlatformInfo.systemTime);
1295     savedPlatformInfo.systemTime = NULL;
1296 }
1297
1298 static OCStackResult DeepCopyPlatFormInfo(OCPlatformInfo info)
1299 {
1300     savedPlatformInfo.platformID = OICStrdup(info.platformID);
1301     savedPlatformInfo.manufacturerName = OICStrdup(info.manufacturerName);
1302     savedPlatformInfo.manufacturerUrl = OICStrdup(info.manufacturerUrl);
1303     savedPlatformInfo.modelNumber = OICStrdup(info.modelNumber);
1304     savedPlatformInfo.dateOfManufacture = OICStrdup(info.dateOfManufacture);
1305     savedPlatformInfo.platformVersion = OICStrdup(info.platformVersion);
1306     savedPlatformInfo.operatingSystemVersion = OICStrdup(info.operatingSystemVersion);
1307     savedPlatformInfo.hardwareVersion = OICStrdup(info.hardwareVersion);
1308     savedPlatformInfo.firmwareVersion = OICStrdup(info.firmwareVersion);
1309     savedPlatformInfo.supportUrl = OICStrdup(info.supportUrl);
1310     savedPlatformInfo.systemTime = OICStrdup(info.systemTime);
1311
1312     if ((!savedPlatformInfo.platformID && info.platformID)||
1313         (!savedPlatformInfo.manufacturerName && info.manufacturerName)||
1314         (!savedPlatformInfo.manufacturerUrl && info.manufacturerUrl)||
1315         (!savedPlatformInfo.modelNumber && info.modelNumber)||
1316         (!savedPlatformInfo.dateOfManufacture && info.dateOfManufacture)||
1317         (!savedPlatformInfo.platformVersion && info.platformVersion)||
1318         (!savedPlatformInfo.operatingSystemVersion && info.operatingSystemVersion)||
1319         (!savedPlatformInfo.hardwareVersion && info.hardwareVersion)||
1320         (!savedPlatformInfo.firmwareVersion && info.firmwareVersion)||
1321         (!savedPlatformInfo.supportUrl && info.supportUrl)||
1322         (!savedPlatformInfo.systemTime && info.systemTime))
1323     {
1324         DeletePlatformInfo();
1325         return OC_STACK_INVALID_PARAM;
1326     }
1327
1328     return OC_STACK_OK;
1329
1330 }
1331
1332 OCStackResult SavePlatformInfo(OCPlatformInfo info)
1333 {
1334     DeletePlatformInfo();
1335
1336     OCStackResult res = DeepCopyPlatFormInfo(info);
1337
1338     if (res != OC_STACK_OK)
1339     {
1340         OIC_LOG_V(ERROR, TAG, "Failed to save platform info. errno(%d)", res);
1341     }
1342     else
1343     {
1344         OIC_LOG(INFO, TAG, "Platform info saved.");
1345     }
1346
1347     return res;
1348 }
1349
1350 void DeleteDeviceInfo()
1351 {
1352     OIC_LOG(INFO, TAG, "Deleting device info.");
1353
1354     OICFree(savedDeviceInfo.deviceName);
1355     OCFreeOCStringLL(savedDeviceInfo.types);
1356     OICFree(savedDeviceInfo.specVersion);
1357     OCFreeOCStringLL(savedDeviceInfo.dataModelVersions);
1358     savedDeviceInfo.deviceName = NULL;
1359     savedDeviceInfo.specVersion = NULL;
1360     savedDeviceInfo.dataModelVersions = NULL;
1361 }
1362
1363 static OCStackResult DeepCopyDeviceInfo(OCDeviceInfo info)
1364 {
1365     savedDeviceInfo.deviceName = OICStrdup(info.deviceName);
1366
1367     if(!savedDeviceInfo.deviceName && info.deviceName)
1368     {
1369         DeleteDeviceInfo();
1370         return OC_STACK_NO_MEMORY;
1371     }
1372
1373     if (info.types)
1374     {
1375         savedDeviceInfo.types = CloneOCStringLL(info.types);
1376         OCStringLL *type = info.types;
1377         bool found = false;
1378         while (type)
1379         {
1380             if (type && type->value && 0 == strcmp(type->value, OC_RSRVD_RESOURCE_TYPE_DEVICE))
1381             {
1382                 found = true;
1383             }
1384             type = type->next;
1385         }
1386         if (!found)
1387         {
1388             // Append the oic.wk.d at the start of rt link parameter value.
1389             OCStringLL *dest = (OCStringLL*)OICCalloc (1, sizeof (OCStringLL));
1390             if (!dest)
1391             {
1392                 DeleteDeviceInfo();
1393                 return OC_STACK_NO_MEMORY;
1394             }
1395             dest->value = OICStrdup (OC_RSRVD_RESOURCE_TYPE_DEVICE);
1396             if (!dest->value)
1397             {
1398                 DeleteDeviceInfo();
1399                 return OC_STACK_NO_MEMORY;
1400             }
1401             dest->next = savedDeviceInfo.types;
1402             savedDeviceInfo.types = dest;
1403         }
1404         if(!savedDeviceInfo.types && info.types)
1405         {
1406             DeleteDeviceInfo();
1407             return OC_STACK_NO_MEMORY;
1408         }
1409     }
1410
1411     if (info.specVersion)
1412     {
1413         savedDeviceInfo.specVersion = OICStrdup(info.specVersion);
1414         if(!savedDeviceInfo.specVersion && info.specVersion)
1415         {
1416             DeleteDeviceInfo();
1417             return OC_STACK_NO_MEMORY;
1418         }
1419     }
1420     else
1421     {
1422         savedDeviceInfo.specVersion = OICStrdup(OC_SPEC_VERSION);
1423         if(!savedDeviceInfo.specVersion && OC_SPEC_VERSION)
1424         {
1425             DeleteDeviceInfo();
1426             return OC_STACK_NO_MEMORY;
1427         }
1428     }
1429
1430     if (info.dataModelVersions)
1431     {
1432         savedDeviceInfo.dataModelVersions = CloneOCStringLL(info.dataModelVersions);
1433         if(!savedDeviceInfo.dataModelVersions && info.dataModelVersions)
1434         {
1435             DeleteDeviceInfo();
1436             return OC_STACK_NO_MEMORY;
1437         }
1438     }
1439     else
1440     {
1441         savedDeviceInfo.dataModelVersions = (OCStringLL *)OICCalloc(1,sizeof(OCStringLL));
1442         if (!savedDeviceInfo.dataModelVersions)
1443         {
1444             return OC_STACK_NO_MEMORY;
1445         }
1446         savedDeviceInfo.dataModelVersions->value = OICStrdup(OC_DATA_MODEL_VERSION);
1447         if(!savedDeviceInfo.dataModelVersions->value && OC_DATA_MODEL_VERSION)
1448         {
1449             DeleteDeviceInfo();
1450             return OC_STACK_NO_MEMORY;
1451         }
1452     }
1453
1454     return OC_STACK_OK;
1455 }
1456
1457 OCStackResult SaveDeviceInfo(OCDeviceInfo info)
1458 {
1459     OCStackResult res = OC_STACK_OK;
1460
1461     DeleteDeviceInfo();
1462
1463     res = DeepCopyDeviceInfo(info);
1464
1465     VERIFY_SUCCESS(res, OC_STACK_OK);
1466
1467     if (OCGetServerInstanceIDString() == NULL)
1468     {
1469         OIC_LOG(INFO, TAG, "Device ID generation failed");
1470         res =  OC_STACK_ERROR;
1471         goto exit;
1472     }
1473
1474     OIC_LOG(INFO, TAG, "Device initialized successfully.");
1475     return OC_STACK_OK;
1476
1477 exit:
1478     DeleteDeviceInfo();
1479     return res;
1480 }