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