1 //******************************************************************
3 // Copyright 2014 Intel Mobile Communications GmbH All Rights Reserved.
5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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
11 // http://www.apache.org/licenses/LICENSE-2.0
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.
19 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
22 //-----------------------------------------------------------------------------
24 //-----------------------------------------------------------------------------
26 #include "ocstackinternal.h"
27 #include "ocresourcehandler.h"
28 #include "occlientcb.h"
29 #include "ocobserve.h"
34 #include "ocserverrequest.h"
38 #include "cainterface.h"
41 //-----------------------------------------------------------------------------
43 //-----------------------------------------------------------------------------
45 OC_STACK_UNINITIALIZED = 0, OC_STACK_INITIALIZED
50 OC_PRESENCE_UNINITIALIZED = 0, OC_PRESENCE_INITIALIZED
54 //-----------------------------------------------------------------------------
56 //-----------------------------------------------------------------------------
57 static OCStackState stackState = OC_STACK_UNINITIALIZED;
59 OCResource *headResource = NULL;
61 static OCPresenceState presenceState = OC_PRESENCE_UNINITIALIZED;
62 static PresenceResource presenceResource;
63 uint8_t PresenceTimeOutSize = 0;
64 uint32_t PresenceTimeOut[] = {50, 75, 85, 95, 100};
68 OCDeviceEntityHandler defaultDeviceHandler;
70 //-----------------------------------------------------------------------------
72 //-----------------------------------------------------------------------------
73 #define TAG PCF("OCStack")
74 #define VERIFY_SUCCESS(op, successCode) { if (op != successCode) \
75 {OC_LOG_V(FATAL, TAG, "%s failed!!", #op); goto exit;} }
76 #define VERIFY_NON_NULL(arg, logLevel, retVal) { if (!(arg)) { OC_LOG((logLevel), \
77 TAG, PCF(#arg " is NULL")); return (retVal); } }
78 #define VERIFY_NON_NULL_V(arg) { if (!arg) {OC_LOG_V(FATAL, TAG, "%s is NULL", #arg);\
81 //TODO: we should allow the server to define this
82 #define MAX_OBSERVE_AGE (0x2FFFFUL)
84 //-----------------------------------------------------------------------------
86 //-----------------------------------------------------------------------------
87 extern void DeinitOCSecurityInfo();
89 //-----------------------------------------------------------------------------
90 // Internal API function
91 //-----------------------------------------------------------------------------
93 // This internal function is called to update the stack with the status of
94 // observers and communication failures
95 OCStackResult OCStackFeedBack(OCCoAPToken * token, uint8_t status)
97 OCStackResult result = OC_STACK_ERROR;
98 ResourceObserver * observer = NULL;
99 OCEntityHandlerRequest ehRequest = {0};
103 case OC_OBSERVER_NOT_INTERESTED:
104 OC_LOG(DEBUG, TAG, PCF("observer is not interested in our notifications anymore"));
106 observer = GetObserverUsingToken (token->token);
108 observer = GetObserverUsingToken (token);
112 result = FormOCEntityHandlerRequest(&ehRequest, (OCRequestHandle) NULL,
113 OC_REST_NOMETHOD, (OCResourceHandle) NULL, NULL, NULL, 0,
114 NULL, OC_OBSERVE_DEREGISTER, observer->observeId);
115 if(result != OC_STACK_OK)
119 observer->resource->entityHandler(OC_OBSERVE_FLAG, &ehRequest);
121 //observer is not observing anymore
123 result = DeleteObserverUsingToken (token->token);
125 result = DeleteObserverUsingToken (token);
127 if(result == OC_STACK_OK)
129 OC_LOG(DEBUG, TAG, PCF("Removed observer successfully"));
133 result = OC_STACK_OK;
134 OC_LOG(DEBUG, TAG, PCF("Observer Removal failed"));
137 case OC_OBSERVER_STILL_INTERESTED:
138 //observer is still interested
139 OC_LOG(DEBUG, TAG, PCF("observer is interested in our \
140 notifications, reset the failedCount"));
142 observer = GetObserverUsingToken (token->token);
144 observer = GetObserverUsingToken (token);
148 observer->forceHighQos = 0;
149 observer->failedCommCount = 0;
150 result = OC_STACK_OK;
154 result = OC_STACK_OBSERVER_NOT_FOUND;
157 case OC_OBSERVER_FAILED_COMM:
158 //observer is not reachable
159 OC_LOG(DEBUG, TAG, PCF("observer is unreachable"));
161 observer = GetObserverUsingToken (token->token);
163 observer = GetObserverUsingToken (token);
167 if(observer->failedCommCount >= MAX_OBSERVER_FAILED_COMM)
169 result = FormOCEntityHandlerRequest(&ehRequest, (OCRequestHandle) NULL,
170 OC_REST_NOMETHOD, (OCResourceHandle) NULL, NULL, NULL, 0,
171 NULL, OC_OBSERVE_DEREGISTER, observer->observeId);
172 if(result != OC_STACK_OK)
174 return OC_STACK_ERROR;
176 observer->resource->entityHandler(OC_OBSERVE_FLAG, &ehRequest);
177 //observer is unreachable
178 result = DeleteObserverUsingToken (token);
179 if(result == OC_STACK_OK)
181 OC_LOG(DEBUG, TAG, PCF("Removed observer successfully"));
185 result = OC_STACK_OK;
186 OC_LOG(DEBUG, TAG, PCF("Observer Removal failed"));
191 observer->failedCommCount++;
192 result = OC_STACK_CONTINUE;
194 observer->forceHighQos = 1;
195 OC_LOG_V(DEBUG, TAG, "Failed count for this observer is %d",observer->failedCommCount);
199 OC_LOG(ERROR, TAG, PCF("Unknown status"));
200 result = OC_STACK_ERROR;
207 OCStackResult CAToOCStackResult(CAResponseResult_t caCode)
209 OCStackResult ret = OC_STACK_ERROR;
217 ret = OC_STACK_RESOURCE_CREATED;
220 ret = OC_STACK_RESOURCE_DELETED;
223 ret = OC_STACK_INVALID_QUERY;
226 ret = OC_STACK_INVALID_OPTION;
229 ret = OC_STACK_NO_RESOURCE;
237 //This function will be called back by CA layer when a response is received
238 void HandleCAResponses(const CARemoteEndpoint_t* endPoint, const CAResponseInfo_t* responseInfo)
240 OC_LOG(INFO, TAG, PCF("Enter HandleCAResponses"));
241 printf ("Received payload: %s\n", (char *)responseInfo->info.payload);
242 OCStackApplicationResult result = OC_STACK_DELETE_TRANSACTION;
243 ClientCB *cbNode = GetClientCB((CAToken_t *)&responseInfo->info.token, NULL, NULL);
246 OC_LOG(INFO, TAG, PCF("Calling into application address space"));
247 OCClientResponse response;
248 struct sockaddr_in sa;
250 inet_pton(AF_INET, endPoint->addressInfo.IP.ipAddress, &(sa.sin_addr));
251 sa.sin_port = htons(endPoint->addressInfo.IP.port);
252 static OCDevAddr address;
253 memcpy((void*)&address.addr, &(sa), sizeof(sa));
254 response.addr = &address;
255 response.result = CAToOCStackResult(responseInfo->result);
256 response.resJSONPayload = (unsigned char*)responseInfo->info.payload;
257 response.numRcvdVendorSpecificHeaderOptions = 0;
258 if(responseInfo->info.numOptions > 0)
260 //First option alwas with option ID COAP_OPTION_OBSERVE if it is availbale
261 if(responseInfo->info.options[0].optionID == COAP_OPTION_OBSERVE)
263 memcpy (&(response.sequenceNumber),
264 &(responseInfo->info.options[0].optionData), 4);
268 memcpy (&(response.rcvdVendorSpecificHeaderOptions[0]),
269 &(responseInfo->info.options[0]), sizeof(OCHeaderOption));
271 for (uint8_t i = 1; i < responseInfo->info.numOptions; i++)
273 memcpy (&(response.rcvdVendorSpecificHeaderOptions[i]),
274 &(responseInfo->info.options[i]), sizeof(OCHeaderOption));
276 response.numRcvdVendorSpecificHeaderOptions = responseInfo->info.numOptions;
278 result = cbNode->callBack(cbNode->context,
279 cbNode->handle, &response);
280 if (result == OC_STACK_DELETE_TRANSACTION)
282 FindAndDeleteClientCB(cbNode);
285 OC_LOG_V(INFO, TAG, PCF("Received payload: %s\n"), (char*)responseInfo->info.payload);
286 OC_LOG(INFO, TAG, PCF("Exit HandleCAResponses"));
289 //This function will be called back by CA layer when a request is received
290 void HandleCARequests(const CARemoteEndpoint_t* endPoint, const CARequestInfo_t* requestInfo)
292 CAInfo_t responseData;
293 CAResponseInfo_t responseInfo;
294 OCStackResult requestResult = OC_STACK_ERROR;
296 OC_LOG(INFO, TAG, PCF("Enter HandleCARequests"));
299 if(myStackMode == OC_CLIENT)
301 //TODO: should the client be responding to requests?
305 OCServerProtocolRequest serverRequest;
307 memset (&serverRequest, 0, sizeof(OCServerProtocolRequest));
308 // copy URI of resource
309 memcpy (&(serverRequest.resourceUrl), endPoint->resourceUri, strlen(endPoint->resourceUri));
311 // TODO-CA: Is the query part of header option?
312 //copy request payload
313 if (requestInfo->info.payload)
315 serverRequest.reqTotalSize = strlen(requestInfo->info.payload) + 1;
316 memcpy (&(serverRequest.reqJSONPayload), requestInfo->info.payload,
317 strlen(requestInfo->info.payload));
318 serverRequest.reqTotalSize = strlen((const char *)requestInfo->info.payload) + 1;
322 serverRequest.reqTotalSize = 1;
325 switch (requestInfo->method)
329 serverRequest.method = OC_REST_GET;
334 serverRequest.method = OC_REST_PUT;
339 serverRequest.method = OC_REST_POST;
344 serverRequest.method = OC_REST_DELETE;
349 OC_LOG(ERROR, TAG, PCF("Received CA method %d not supported"));
355 OC_LOG_V(INFO, TAG, "HandleCARequests: CA token length = %d", strlen(requestInfo->info.token));
356 OC_LOG_BUFFER(INFO, TAG, requestInfo->info.token, strlen(requestInfo->info.token));
357 // TODO-CA: For CA integration currently copying CAToken to OCCoapToken:
358 // Need to remove OCCoapToken
359 memcpy (&(serverRequest.requestToken.token), requestInfo->info.token,
360 strlen(requestInfo->info.token));
361 serverRequest.requestToken.tokenLength = strlen(requestInfo->info.token);
363 if (requestInfo->info.type == CA_MSG_CONFIRM)
365 serverRequest.qos = OC_HIGH_QOS;
367 else if (requestInfo->info.type == CA_MSG_NONCONFIRM)
369 serverRequest.qos = OC_LOW_QOS;
371 else if (requestInfo->info.type == CA_MSG_ACKNOWLEDGE)
373 // TODO-CA: Need to handle this
375 else if (requestInfo->info.type == CA_MSG_RESET)
377 // TODO-CA: Need to handle this
379 // CA does not need the following 3 fields
380 serverRequest.coapID = 0;
381 serverRequest.delayedResNeeded = 0;
382 serverRequest.secured = endPoint->isSecured;
385 serverRequest.addressInfo = endPoint->addressInfo;
386 serverRequest.connectivityType = endPoint->connectivityType;
387 if (requestInfo->info.token)
389 strncpy(serverRequest.token, requestInfo->info.token, sizeof(serverRequest.token) - 1);
392 struct sockaddr_in sa;
393 inet_pton(AF_INET, endPoint->addressInfo.IP.ipAddress, &(sa.sin_addr));
394 sa.sin_port = htons(endPoint->addressInfo.IP.port);
395 memcpy((void*)&serverRequest.requesterAddr, &(sa), sizeof(sa));
397 // copy vendor specific header options
398 // TODO-CA: CA is including non-vendor header options as well, like observe.
399 // Need to filter those out
400 GetObserveHeaderOption(&serverRequest.observationOption, requestInfo->info.options, &(requestInfo->info.numOptions));
401 if (requestInfo->info.numOptions > MAX_HEADER_OPTIONS)
403 // TODO-CA: Need to send an error indicating the num of options is incorrect
406 serverRequest.numRcvdVendorSpecificHeaderOptions = requestInfo->info.numOptions;
407 if (serverRequest.numRcvdVendorSpecificHeaderOptions)
409 memcpy (&(serverRequest.rcvdVendorSpecificHeaderOptions), requestInfo->info.options,
410 sizeof(CAHeaderOption_t)*requestInfo->info.numOptions);
413 requestResult = HandleStackRequests (&serverRequest);
417 // generate the pdu, if the request was CON, then the response is ACK, otherwire NON
418 memset(&responseData, 0, sizeof(CAInfo_t));
419 responseData.token = (requestInfo != NULL) ? requestInfo->info.token : "";
421 // TODO : I guess we need to allocate memeory?
422 responseData.payload = "{\"oc\":[{\"href\":\"/a/led\",\"sid\":\"\",\"prop\":{\"rt\":[\"core.led\"],\"if\":[\"oc.mi.def\"],\"obs\":1}}]}";
424 //responseInfo = (CAResponseInfo*) malloc(sizeof(CAResponseInfo));
425 memset(&responseInfo, 0, sizeof(CAResponseInfo_t));
426 responseInfo.result = 200;
427 responseInfo.info = responseData;
429 // send request (connectivityType from remoteEndpoint of request Info)
430 OC_LOG(INFO, TAG, PCF("CASendResponse in HandleCARequests"));
431 //TODO-CA: CASendResponse returns the result (we need to check if the
433 CAResult_t caResult = CASendResponse(endPoint, &responseInfo);
434 if(caResult != CA_STATUS_OK)
436 OC_LOG(ERROR, TAG, PCF("CASendResponse error"));
440 OC_LOG(INFO, TAG, PCF("Exit HandleCARequests"));
445 //This function will be called back by occoap layer when a request is received
446 OCStackResult HandleStackRequests(OCServerProtocolRequest * protocolRequest)
448 OC_LOG(INFO, TAG, PCF("Entering HandleStackRequests (OCStack Layer)"));
450 OCStackResult result = OC_STACK_ERROR;
451 ResourceHandling resHandling;
452 OCResource *resource;
454 OCServerRequest * request = GetServerRequestUsingToken(protocolRequest->requestToken);
457 OC_LOG(INFO, TAG, PCF("This is a new Server Request"));
459 result = AddServerCARequest(&request, protocolRequest->coapID,
460 protocolRequest->delayedResNeeded, protocolRequest->secured, 0,
461 protocolRequest->method, protocolRequest->numRcvdVendorSpecificHeaderOptions,
462 protocolRequest->observationOption, protocolRequest->qos,
463 protocolRequest->query, protocolRequest->rcvdVendorSpecificHeaderOptions,
464 protocolRequest->reqJSONPayload, &protocolRequest->requestToken,
465 &protocolRequest->requesterAddr, protocolRequest->resourceUrl,
466 protocolRequest->reqTotalSize,
467 &protocolRequest->addressInfo, protocolRequest->connectivityType, protocolRequest->token);
469 result = AddServerRequest(&request, protocolRequest->coapID,
470 protocolRequest->delayedResNeeded, protocolRequest->secured, 0,
471 protocolRequest->method, protocolRequest->numRcvdVendorSpecificHeaderOptions,
472 protocolRequest->observationOption, protocolRequest->qos,
473 protocolRequest->query, protocolRequest->rcvdVendorSpecificHeaderOptions,
474 protocolRequest->reqJSONPayload, &protocolRequest->requestToken,
475 &protocolRequest->requesterAddr, protocolRequest->resourceUrl,
476 protocolRequest->reqTotalSize);
478 if (OC_STACK_OK != result)
480 OC_LOG(ERROR, TAG, PCF("Error adding server request"));
483 VERIFY_NON_NULL(request, ERROR, OC_STACK_NO_MEMORY);
485 if(!protocolRequest->reqMorePacket)
487 request->requestComplete = 1;
492 OC_LOG(INFO, TAG, PCF("This is either a repeated Server Request or blocked Server Request"));
495 if(request->requestComplete)
497 OC_LOG(INFO, TAG, PCF("This Server Request is complete"));
498 result = DetermineResourceHandling (request, &resHandling, &resource);
499 if (result == OC_STACK_OK)
501 result = ProcessRequest(resHandling, resource, request);
505 result = OC_STACK_ERROR;
510 OC_LOG(INFO, TAG, PCF("This Server Request is incomplete"));
511 result = OC_STACK_CONTINUE;
516 //This function will be called back by occoap layer when a response is received
517 OCStackResult HandleStackResponses(OCResponse * response)
519 OC_LOG(INFO, TAG, PCF("Entering HandleStackResponses (OCStack Layer)"));
520 OCStackResult result = OC_STACK_OK;
521 OCStackApplicationResult cbResult = OC_STACK_DELETE_TRANSACTION;
522 uint8_t isObserveNotification = 0;
523 ClientCB * cbNode = NULL;
525 uint8_t isPresenceNotification = 0;
526 uint8_t isMulticastPresence = 0;
527 char * resourceTypeName = NULL;
528 uint32_t lowerBound = 0;
529 uint32_t higherBound = 0;
531 unsigned char * bufRes = response->bufRes;
532 #endif // WITH_PRESENCE
534 cbNode = response->cbNode;
537 cbNode = GetClientCB(response->rcvdToken, NULL, NULL);
540 if(response->clientResponse->sequenceNumber >= OC_OFFSET_SEQUENCE_NUMBER)
542 isObserveNotification = 1;
543 OC_LOG(INFO, TAG, PCF("Received an observe notification"));
546 OC_LOG_V(DEBUG, TAG, "The sequenceNumber/NONCE of this response %u",
547 response->clientResponse->sequenceNumber);
548 OC_LOG_V(DEBUG, TAG, "The maxAge/TTL of this response %u", response->maxAge);
549 OC_LOG_V(DEBUG, TAG, "The response received is %s", bufRes);
552 if(!strcmp((char *)response->rcvdUri, (char *)OC_PRESENCE_URI)){
553 isPresenceNotification = 1;
556 result = OC_STACK_INVALID_PARAM;
559 tok = strtok((char *)bufRes, "[:]}");
560 bufRes[strlen((char *)bufRes)] = ':';
561 tok = strtok(NULL, "[:]}");
562 bufRes[strlen((char *)bufRes)] = ':';
563 response->clientResponse->sequenceNumber = (uint32_t )atoi(tok);
564 OC_LOG_V(DEBUG, TAG, "The received NONCE is %u", response->clientResponse->sequenceNumber);
565 tok = strtok(NULL, "[:]}");
566 response->maxAge = (uint32_t )atoi(tok);
567 OC_LOG_V(DEBUG, TAG, "The received TTL is %u", response->maxAge);
568 tok = strtok(NULL, "[:]}");
571 resourceTypeName = (char *)OCMalloc(strlen(tok));
572 if(!resourceTypeName)
576 bufRes[strlen((char *)bufRes)] = ':';
577 strcpy(resourceTypeName, tok);
578 OC_LOG_V(DEBUG, TAG, "----------------resourceTypeName %s",
581 bufRes[strlen((char *)bufRes)] = ']';
584 // Check if the application subcribed for presence
587 cbNode = GetClientCB(NULL, NULL, response->fullUri);
590 // Check if application subscribed for multicast presence
593 snprintf((char *)response->fullUri, MAX_URI_LENGTH, "%s%s",
594 OC_MULTICAST_IP, response->rcvdUri);
595 cbNode = GetClientCB(NULL, NULL, response->fullUri);
598 isMulticastPresence = 1;
599 isPresenceNotification = 0;
603 if(cbNode && isPresenceNotification)
605 OC_LOG(INFO, TAG, PCF("Received a presence notification"));
606 if(!cbNode->presence)
608 cbNode->presence = (OCPresence *) OCMalloc(sizeof(OCPresence));
609 VERIFY_NON_NULL_V(cbNode->presence);
610 cbNode->presence->timeOut = NULL;
611 cbNode->presence->timeOut = (uint32_t *)
612 OCMalloc(PresenceTimeOutSize * sizeof(uint32_t));
613 if(!(cbNode->presence->timeOut)){
614 OCFree(cbNode->presence);
615 result = OC_STACK_NO_MEMORY;
618 if(response->maxAge == 0)
620 OC_LOG(INFO, TAG, PCF("===============Stopping presence"));
621 response->clientResponse->result = OC_STACK_PRESENCE_STOPPED;
624 OCFree(cbNode->presence->timeOut);
625 OCFree(cbNode->presence);
626 cbNode->presence = NULL;
631 OC_LOG_V(INFO, TAG, "===============Update presence TTL, now time is %d", GetTime(0));
632 cbNode->presence->TTL = response->maxAge;
633 for(int index = 0; index < PresenceTimeOutSize; index++)
635 lowerBound = GetTime(((float)(PresenceTimeOut[index])
636 /(float)100)*(float)cbNode->presence->TTL);
637 higherBound = GetTime(((float)(PresenceTimeOut[index + 1])
638 /(float)100)*(float)cbNode->presence->TTL);
639 cbNode->presence->timeOut[index] = OCGetRandomRange(lowerBound, higherBound);
640 OC_LOG_V(DEBUG, TAG, "----------------lowerBound timeout %d", lowerBound);
641 OC_LOG_V(DEBUG, TAG, "----------------higherBound timeout %d", higherBound);
642 OC_LOG_V(DEBUG, TAG, "----------------timeOut entry %d",
643 cbNode->presence->timeOut[index]);
645 cbNode->presence->TTLlevel = 0;
646 OC_LOG_V(DEBUG, TAG, "----------------this TTL level %d", cbNode->presence->TTLlevel);
647 if(cbNode->sequenceNumber == response->clientResponse->sequenceNumber)
649 OC_LOG(INFO, TAG, PCF("===============No presence change"));
652 OC_LOG(INFO, TAG, PCF("===============Presence changed, calling up the stack"));
653 cbNode->sequenceNumber = response->clientResponse->sequenceNumber;;
656 // Ensure that a filter is actually applied.
657 if(resourceTypeName && cbNode->filterResourceType)
659 if(!findResourceType(cbNode->filterResourceType, resourceTypeName))
665 else if(cbNode && isMulticastPresence)
667 // Check if the same nonce for a given host
668 OCMulticastNode* mcNode = NULL;
669 mcNode = GetMCPresenceNode(response->fullUri);
671 if(response->maxAge == 0)
673 OC_LOG(INFO, TAG, PCF("===============Stopping presence"));
674 response->clientResponse->result = OC_STACK_PRESENCE_STOPPED;
677 OCFree(cbNode->presence->timeOut);
678 OCFree(cbNode->presence);
679 cbNode->presence = NULL;
682 else if(mcNode != NULL)
684 if(mcNode->nonce == response->clientResponse->sequenceNumber)
686 OC_LOG(INFO, TAG, PCF("===============No presence change (Multicast)"));
687 result = OC_STACK_NO_MEMORY;
690 mcNode->nonce = response->clientResponse->sequenceNumber;
694 uint32_t uriLen = strlen((char*)response->fullUri);
695 unsigned char* uri = (unsigned char *) OCMalloc(uriLen + 1);
698 memcpy(uri, response->fullUri, (uriLen + 1));
703 PCF("===============No Memory for URI to store in the presence node"));
704 result = OC_STACK_NO_MEMORY;
707 result = AddMCPresenceNode(&mcNode, (unsigned char*) uri,
708 response->clientResponse->sequenceNumber);
709 if(result == OC_STACK_NO_MEMORY)
712 PCF("===============No Memory for Multicast Presence Node"));
713 result = OC_STACK_NO_MEMORY;
718 // Ensure that a filter is actually applied.
719 if(resourceTypeName && cbNode->filterResourceType)
721 if(!findResourceType(cbNode->filterResourceType, resourceTypeName))
728 else if(!cbNode && isPresenceNotification)
730 OC_LOG(INFO, TAG, PCF("Received a presence notification, but I do not have callback \
731 ------------ ignoring"));
733 #endif // WITH_PRESENCE
737 if(isObserveNotification)
739 OC_LOG(INFO, TAG, PCF("Received an observe notification"));
740 //TODO: check the standard for methods to detect wrap around condition
741 if(cbNode->method == OC_REST_OBSERVE &&
742 (response->clientResponse->sequenceNumber <= cbNode->sequenceNumber ||
743 (response->clientResponse->sequenceNumber > cbNode->sequenceNumber &&
744 response->clientResponse->sequenceNumber ==
745 MAX_SEQUENCE_NUMBER)))
747 OC_LOG_V(DEBUG, TAG, "Observe notification came out of order. \
748 Ignoring Incoming:%d Against Current:%d.",
749 response->clientResponse->sequenceNumber, cbNode->sequenceNumber);
752 if(response->clientResponse->sequenceNumber > cbNode->sequenceNumber){
753 cbNode->sequenceNumber = response->clientResponse->sequenceNumber;
757 response->clientResponse->resJSONPayload = bufRes;
759 cbResult = cbNode->callBack(cbNode->context, cbNode->handle, response->clientResponse);
761 if (cbResult == OC_STACK_DELETE_TRANSACTION ||
762 response->clientResponse->result == OC_STACK_COMM_ERROR ||
763 (response->clientResponse->result == OC_STACK_RESOURCE_DELETED &&
764 !isPresenceNotification && !isMulticastPresence))
766 FindAndDeleteClientCB(cbNode);
771 result = OC_STACK_ERROR;
776 OCFree(resourceTypeName);
781 int ParseIPv4Address(unsigned char * ipAddrStr, uint8_t * ipAddr, uint16_t * port)
784 unsigned char *itr, *coap;
785 uint8_t dotCount = 0;
789 /* search for scheme */
791 if (!isdigit((unsigned char) *ipAddrStr))
793 coap = (unsigned char *) OC_COAP_SCHEME;
794 while (*coap && tolower(*itr) == *coap)
803 if (isdigit((unsigned char) *ipAddrStr))
806 ipAddr[index] += *ipAddrStr - '0';
808 else if ((unsigned char) *ipAddrStr == '.')
820 if(*ipAddrStr == ':')
824 if (isdigit((unsigned char) *ipAddrStr))
827 *port += *ipAddrStr - '0';
838 if (ipAddr[0] < 255 && ipAddr[1] < 255 && ipAddr[2] < 255 && ipAddr[3] < 255
849 //-----------------------------------------------------------------------------
850 // Private internal function prototypes
851 //-----------------------------------------------------------------------------
853 static OCDoHandle GenerateInvocationHandle();
854 static OCStackResult initResources();
855 static void insertResource(OCResource *resource);
856 static OCResource *findResource(OCResource *resource);
857 static void insertResourceType(OCResource *resource,
858 OCResourceType *resourceType);
859 static OCResourceType *findResourceTypeAtIndex(OCResourceHandle handle,
861 static void insertResourceInterface(OCResource *resource,
862 OCResourceInterface *resourceInterface);
863 static OCResourceInterface *findResourceInterfaceAtIndex(
864 OCResourceHandle handle, uint8_t index);
865 static void deleteResourceType(OCResourceType *resourceType);
866 static void deleteResourceInterface(OCResourceInterface *resourceInterface);
867 static void deleteResourceElements(OCResource *resource);
868 static int deleteResource(OCResource *resource);
869 static void deleteAllResources();
870 static void incrementSequenceNumber(OCResource * resPtr);
871 static OCStackResult verifyUriQueryLength(const char * inputUri,
873 static uint8_t OCIsPacketTransferRequired(const char *request, const char *response, uint16_t size);
874 OCStackResult getResourceType(const char * uri, unsigned char** resourceType, char ** newURI);
876 //-----------------------------------------------------------------------------
878 //-----------------------------------------------------------------------------
881 * Initialize the OC Stack. Must be called prior to starting the stack.
884 * IP Address of host device
886 * Port of host device
888 * Host device is client, server, or client-server
891 * OC_STACK_OK - no errors
892 * OC_STACK_ERROR - stack init error
894 OCStackResult OCInit(const char *ipAddr, uint16_t port, OCMode mode)
896 OCStackResult result = OC_STACK_ERROR;
897 OC_LOG(INFO, TAG, PCF("Entering OCInit"));
901 OC_LOG_V(INFO, TAG, "IP Address = %s", ipAddr);
905 //It is ok to select network to CA_WIFI for now
906 CAResult_t caResult = CASelectNetwork(CA_WIFI);
907 if(caResult == CA_STATUS_OK)
909 OC_LOG(INFO, TAG, PCF("CASelectNetwork to WIFI"));
910 caResult = CARegisterHandler(HandleCARequests, HandleCAResponses);
911 if(caResult == CA_STATUS_OK)
913 OC_LOG(INFO, TAG, PCF("CARegisterHandler..."));
914 stackState = OC_STACK_INITIALIZED;
915 result = OC_STACK_OK;
919 caResult = CAStartDiscoveryServer();
920 OC_LOG(INFO, TAG, PCF("Client mode: CAStartDiscoveryServer"));
923 caResult = CAStartListeningServer();
924 OC_LOG(INFO, TAG, PCF("Server mode: CAStartListeningServer"));
926 case OC_CLIENT_SERVER:
927 caResult = CAStartListeningServer();
928 if(caResult == CA_STATUS_OK)
930 caResult = CAStartDiscoveryServer();
932 OC_LOG(INFO, TAG, PCF("Client-server mode"));
935 OC_LOG(ERROR, TAG, PCF("Invalid mode"));
936 return OC_STACK_ERROR;
941 if (caResult == CA_STATUS_OK)
943 result = OC_STACK_OK;
947 result = OC_STACK_ERROR;
954 OC_LOG(INFO, TAG, PCF("Client mode"));
957 OC_LOG(INFO, TAG, PCF("Server mode"));
959 case OC_CLIENT_SERVER:
960 OC_LOG(INFO, TAG, PCF("Client-server mode"));
963 OC_LOG(ERROR, TAG, PCF("Invalid mode"));
964 return OC_STACK_ERROR;
968 // Make call to OCCoAP layer
969 result = OCInitCoAP(ipAddr, (uint16_t) port, myStackMode);
973 defaultDeviceHandler = NULL;
976 PresenceTimeOutSize = sizeof(PresenceTimeOut)/sizeof(PresenceTimeOut[0]) - 1;
977 #endif // WITH_PRESENCE
979 if (result == OC_STACK_OK)
981 stackState = OC_STACK_INITIALIZED;
983 // Initialize resource
984 if(result == OC_STACK_OK && myStackMode != OC_CLIENT)
986 result = initResources();
988 if(result != OC_STACK_OK)
990 OC_LOG(ERROR, TAG, PCF("Stack initialization error"));
996 * Stop the OC stack. Use for a controlled shutdown.
998 * OC_STACK_OK - no errors
999 * OC_STACK_ERROR - stack not initialized
1001 OCStackResult OCStop()
1003 OCStackResult result = OC_STACK_ERROR;
1005 OC_LOG(INFO, TAG, PCF("Entering OCStop"));
1007 if (stackState != OC_STACK_INITIALIZED)
1009 OC_LOG(ERROR, TAG, PCF("Stack not initialized"));
1010 return OC_STACK_ERROR;
1013 #ifdef WITH_PRESENCE
1014 // Ensure that the TTL associated with ANY and ALL presence notifications originating from
1015 // here send with the code "OC_STACK_PRESENCE_STOPPED" result.
1016 presenceResource.presenceTTL = 0;
1017 #endif // WITH_PRESENCE
1019 // Free memory dynamically allocated for resources
1020 deleteAllResources();
1022 // Make call to OCCoAP layer
1023 if (OCStopCoAP() == OC_STACK_OK)
1025 // Remove all observers
1026 DeleteObserverList();
1027 // Remove all the client callbacks
1028 DeleteClientCBList();
1029 stackState = OC_STACK_UNINITIALIZED;
1030 result = OC_STACK_OK;
1032 result = OC_STACK_ERROR;
1035 // Deinit security blob
1036 DeinitOCSecurityInfo();
1038 if (result != OC_STACK_OK) {
1039 OC_LOG(ERROR, TAG, PCF("Stack stop error"));
1046 * Verify the lengths of the URI and the query separately
1048 * @param inputUri - Input URI and query.
1049 * @param uriLen - The length of the initial URI with query.
1051 * Note: The '?' that appears after the URI is not considered as
1052 * a part of the query.
1054 OCStackResult verifyUriQueryLength(const char *inputUri, uint16_t uriLen)
1058 query = strchr (inputUri, '?');
1062 if((query - inputUri) > MAX_URI_LENGTH)
1064 return OC_STACK_INVALID_URI;
1067 if((inputUri + uriLen - 1 - query) > MAX_QUERY_LENGTH)
1069 return OC_STACK_INVALID_QUERY;
1072 else if(uriLen > MAX_URI_LENGTH)
1074 return OC_STACK_INVALID_URI;
1080 * Discover or Perform requests on a specified resource (specified by that Resource's respective URI).
1082 * @param handle - @ref OCDoHandle to refer to the request sent out on behalf of calling this API.
1083 * @param method - @ref OCMethod to perform on the resource
1084 * @param requiredUri - URI of the resource to interact with
1085 * @param referenceUri - URI of the reference resource
1086 * @param request - JSON encoded request
1087 * @param qos - quality of service
1088 * @param cbData - struct that contains asynchronous callback function that is invoked
1089 * by the stack when discovery or resource interaction is complete
1090 * @param options - The address of an array containing the vendor specific header
1091 * header options to be sent with the request
1092 * @param numOptions - Number of vendor specific header options to be included
1095 * OC_STACK_OK - no errors
1096 * OC_STACK_INVALID_CALLBACK - invalid callback function pointer
1097 * OC_STACK_INVALID_METHOD - invalid resource method
1098 * OC_STACK_INVALID_URI - invalid required or reference URI
1101 OCStackResult OCDoResource(OCDoHandle *handle, OCMethod method, const char *requiredUri,
1102 const char *referenceUri, const char *request,
1103 OCQualityOfService qos, OCCallbackData *cbData,
1104 OCHeaderOption * options, uint8_t numOptions)
1106 OCStackResult result = OC_STACK_ERROR;
1108 ClientCB *clientCB = NULL;
1109 unsigned char * requestUri = NULL;
1110 unsigned char * resourceType = NULL;
1111 char * newUri = (char *)requiredUri;
1112 (void) referenceUri;
1114 CARemoteEndpoint_t* endpoint = NULL;
1115 CAResult_t caResult;
1116 CAToken_t caToken = NULL;
1117 CAInfo_t requestData;
1118 CARequestInfo_t requestInfo;
1119 // To track if memory is allocated for additional header options
1120 uint8_t hdrOptionMemAlloc = 0;
1123 OC_LOG(INFO, TAG, PCF("Entering OCDoResource"));
1125 // Validate input parameters
1126 VERIFY_NON_NULL(cbData, FATAL, OC_STACK_INVALID_CALLBACK);
1127 VERIFY_NON_NULL(cbData->cb, FATAL, OC_STACK_INVALID_CALLBACK);
1129 TODO ("Need to form the final query by concatenating require and reference URI's");
1130 VERIFY_NON_NULL(requiredUri, FATAL, OC_STACK_INVALID_URI);
1132 uint16_t uriLen = strlen(requiredUri);
1134 // ToDo: We should also check if the requiredUri has a mutlicast address, then qos has to be OC_Low_QOS
1140 case OC_REST_DELETE:
1141 case OC_REST_OBSERVE:
1142 case OC_REST_OBSERVE_ALL:
1143 case OC_REST_CANCEL_OBSERVE:
1145 #ifdef WITH_PRESENCE
1146 case OC_REST_PRESENCE:
1150 result = OC_STACK_INVALID_METHOD;
1154 if((result = verifyUriQueryLength(requiredUri, uriLen)) != OC_STACK_OK)
1159 if((request) && (strlen(request) > MAX_REQUEST_LENGTH))
1161 result = OC_STACK_INVALID_PARAM;
1165 #ifdef WITH_PRESENCE
1166 if(method == OC_REST_PRESENCE)
1168 // Replacing method type with GET because "presence" is a stack layer only implementation.
1169 method = OC_REST_GET;
1171 result = getResourceType(requiredUri, &resourceType, &newUri);
1173 OC_LOG_V(DEBUG, TAG, "Got Resource Type: %s", resourceType);
1177 OC_LOG(DEBUG, TAG, PCF("Got Resource Type is NULL."));
1179 if(result != OC_STACK_OK)
1184 #endif // WITH_PRESENCE
1186 requestUri = (unsigned char *) OCMalloc(uriLen + 1);
1189 memcpy(requestUri, newUri, (uriLen + 1));
1193 result = OC_STACK_NO_MEMORY;
1197 *handle = GenerateInvocationHandle();
1200 result = OC_STACK_NO_MEMORY;
1205 memset(&requestData, 0, sizeof(CAInfo_t));
1206 memset(&requestInfo, 0, sizeof(CARequestInfo_t));
1210 case OC_REST_OBSERVE:
1211 case OC_REST_OBSERVE_ALL:
1212 case OC_REST_CANCEL_OBSERVE:
1214 requestInfo.method = CA_GET;
1219 requestInfo.method = CA_PUT;
1224 requestInfo.method = CA_POST;
1227 case OC_REST_DELETE:
1229 requestInfo.method = CA_DELETE;
1232 #ifdef WITH_PRESENCE
1233 case OC_REST_PRESENCE:
1234 //TODO-CA: What should be the CA method?
1238 result = OC_STACK_INVALID_METHOD;
1242 // TODO-CA: Handle multi-cast scenario
1243 // Create remote end point
1244 caResult = CACreateRemoteEndpoint(newUri, CA_WIFI, &endpoint);
1245 // TODO-CA: Connectivity type should be passed to API
1246 endpoint->connectivityType = CA_WIFI;
1247 if (caResult != CA_STATUS_OK)
1249 OC_LOG(ERROR, TAG, PCF("CACreateRemoteEndpoint error"));
1254 caResult = CAGenerateToken(&caToken);
1256 if (caResult != CA_STATUS_OK)
1258 OC_LOG(ERROR, TAG, PCF("CAGenerateToken error"));
1263 // TODO-CA: Map QoS to the right CA msg type
1264 requestData.type = CA_MSG_NONCONFIRM;
1265 requestData.token = caToken;
1266 if ((method == OC_REST_OBSERVE) || (method == OC_REST_OBSERVE_ALL))
1268 result = CreateObserveHeaderOption (&(requestData.options), options,
1269 numOptions, OC_OBSERVE_REGISTER);
1270 if (result != OC_STACK_OK)
1274 hdrOptionMemAlloc = 1;
1275 requestData.numOptions = numOptions + 1;
1279 requestData.options = (CAHeaderOption_t*)options;
1280 requestData.numOptions = numOptions;
1282 requestData.payload = (char *)request;
1284 requestInfo.info = requestData;
1287 caResult = CASendRequest(endpoint, &requestInfo);
1288 if (caResult != CA_STATUS_OK)
1290 OC_LOG(ERROR, TAG, PCF("CASendRequest"));
1294 if((result = AddClientCB(&clientCB, cbData, &caToken, handle, method,
1295 requestUri, resourceType)) != OC_STACK_OK)
1297 result = OC_STACK_NO_MEMORY;
1303 // Generate token which will be used by OCStack to match responses received
1305 OCGenerateCoAPToken(&token);
1307 if((result = AddClientCB(&clientCB, cbData, &token, handle, method, requestUri, resourceType))
1310 result = OC_STACK_NO_MEMORY;
1314 // Make call to OCCoAP layer
1315 result = OCDoCoAPResource(method, qos, &token, newUri, request, options, numOptions);
1319 if(newUri != requiredUri)
1323 if (result != OC_STACK_OK)
1325 OC_LOG(ERROR, TAG, PCF("OCDoResource error"));
1326 FindAndDeleteClientCB(clientCB);
1329 CADestroyRemoteEndpoint(endpoint);
1330 if (hdrOptionMemAlloc)
1332 OCFree(requestData.options);
1339 * Cancel a request associated with a specific @ref OCDoResource invocation.
1341 * @param handle - Used to identify a specific OCDoResource invocation.
1342 * @param qos - used to specify Quality of Service (read below for more info)
1343 * @param options- used to specify vendor specific header options when sending
1344 * explicit observe cancellation
1345 * @param numOptions- Number of header options to be included
1348 * OC_STACK_OK - No errors; Success
1349 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
1351 OCStackResult OCCancel(OCDoHandle handle, OCQualityOfService qos, OCHeaderOption * options,
1355 * This ftn is implemented one of two ways in the case of observation:
1357 * 1. qos == OC_NON_CONFIRMABLE. When observe is unobserved..
1358 * Remove the callback associated on client side.
1359 * When the next notification comes in from server,
1360 * reply with RESET message to server.
1361 * Keep in mind that the server will react to RESET only
1362 * if the last notification was sent ans CON
1364 * 2. qos == OC_CONFIRMABLE. When OCCancel is called,
1365 * and it is associated with an observe request
1366 * (i.e. ClientCB->method == OC_REST_OBSERVE || OC_REST_OBSERVE_ALL),
1367 * Send CON Observe request to server with
1368 * observe flag = OC_RESOURCE_OBSERVE_DEREGISTER.
1369 * Remove the callback associated on client side.
1371 OCStackResult ret = OC_STACK_OK;
1373 CARemoteEndpoint_t* endpoint = NULL;
1374 CAResult_t caResult;
1375 CAInfo_t requestData;
1376 CARequestInfo_t requestInfo;
1377 // Track if memory is allocated for additional header options
1378 uint8_t hdrOptionMemAlloc = 0;
1382 return OC_STACK_INVALID_PARAM;
1385 OC_LOG(INFO, TAG, PCF("Entering OCCancel"));
1387 ClientCB *clientCB = GetClientCB(NULL, handle, NULL);
1390 switch (clientCB->method)
1392 case OC_REST_OBSERVE:
1393 case OC_REST_OBSERVE_ALL:
1395 caResult = CACreateRemoteEndpoint((char *)clientCB->requestUri, CA_WIFI,
1397 endpoint->connectivityType = CA_WIFI;
1398 if (caResult != CA_STATUS_OK)
1400 OC_LOG(ERROR, TAG, PCF("CACreateRemoteEndpoint error"));
1401 return OC_STACK_ERROR;
1404 memset(&requestData, 0, sizeof(CAInfo_t));
1405 // TODO-CA: Map QoS to the right CA msg type
1406 requestData.type = CA_MSG_NONCONFIRM;
1407 requestData.token = clientCB->token;
1408 if (CreateObserveHeaderOption (&(requestData.options),
1409 options, numOptions, OC_OBSERVE_DEREGISTER) != OC_STACK_OK)
1411 return OC_STACK_ERROR;
1413 hdrOptionMemAlloc = 1;
1414 requestData.numOptions = numOptions + 1;
1415 memset(&requestInfo, 0, sizeof(CARequestInfo_t));
1416 requestInfo.method = CA_GET;
1417 requestInfo.info = requestData;
1419 caResult = CASendRequest(endpoint, &requestInfo);
1420 if (caResult != CA_STATUS_OK)
1422 OC_LOG(ERROR, TAG, PCF("CASendRequest error"));
1424 if(caResult == CA_STATUS_OK)
1429 if(qos == OC_HIGH_QOS)
1431 ret = OCDoCoAPResource(OC_REST_CANCEL_OBSERVE, qos,
1432 &(clientCB->token), (const char *) clientCB->requestUri, NULL, options,
1437 FindAndDeleteClientCB(clientCB);
1441 #ifdef WITH_PRESENCE
1442 case OC_REST_PRESENCE:
1443 FindAndDeleteClientCB(clientCB);
1447 return OC_STACK_INVALID_METHOD;
1451 CADestroyRemoteEndpoint(endpoint);
1452 if (hdrOptionMemAlloc)
1454 OCFree(requestData.options);
1460 #ifdef WITH_PRESENCE
1461 OCStackResult OCProcessPresence()
1463 OCStackResult result = OC_STACK_OK;
1464 uint8_t ipAddr[4] = { 0 };
1467 OC_LOG(INFO, TAG, PCF("Entering RequestPresence"));
1468 ClientCB* cbNode = NULL;
1470 OCClientResponse clientResponse;
1471 OCResponse * response = NULL;
1473 LL_FOREACH(cbList, cbNode) {
1474 if(OC_REST_PRESENCE == cbNode->method)
1476 if(cbNode->presence)
1478 uint32_t now = GetTime(0);
1479 OC_LOG_V(DEBUG, TAG, "----------------this TTL level %d", cbNode->presence->TTLlevel);
1480 OC_LOG_V(DEBUG, TAG, "----------------current ticks %d", now);
1483 if(cbNode->presence->TTLlevel >= (PresenceTimeOutSize + 1))
1488 if(cbNode->presence->TTLlevel < PresenceTimeOutSize){
1489 OC_LOG_V(DEBUG, TAG, "----------------timeout ticks %d",
1490 cbNode->presence->timeOut[cbNode->presence->TTLlevel]);
1493 if(cbNode->presence->TTLlevel >= PresenceTimeOutSize)
1495 OC_LOG(DEBUG, TAG, PCF("----------------No more timeout ticks"));
1496 if (ParseIPv4Address( cbNode->requestUri, ipAddr, &port))
1498 OCBuildIPv4Address(ipAddr[0], ipAddr[1], ipAddr[2], ipAddr[3], port,
1500 result = FormOCClientResponse(&clientResponse, OC_STACK_PRESENCE_TIMEOUT,
1501 (OCDevAddr *) &dst, 0, NULL);
1502 if(result != OC_STACK_OK)
1506 result = FormOCResponse(&response, cbNode, 0, NULL, NULL,
1507 &cbNode->token, &clientResponse, NULL);
1508 if(result != OC_STACK_OK)
1513 // Increment the TTLLevel (going to a next state), so we don't keep
1514 // sending presence notification to client.
1515 cbNode->presence->TTLlevel++;
1516 OC_LOG_V(DEBUG, TAG, "----------------moving to TTL level %d",
1517 cbNode->presence->TTLlevel);
1521 result = OC_STACK_INVALID_IP;
1524 HandleStackResponses(response);
1526 if(now >= cbNode->presence->timeOut[cbNode->presence->TTLlevel])
1528 OC_LOG(DEBUG, TAG, PCF("time to test server presence =========="));
1530 OCGenerateCoAPToken(&token);
1531 result = OCDoCoAPResource(OC_REST_GET, OC_LOW_QOS,
1532 &token, (const char *)cbNode->requestUri, NULL, NULL, 0);
1533 if(result != OC_STACK_OK)
1537 cbNode->presence->TTLlevel++;
1538 OC_LOG_V(DEBUG, TAG, "----------------moving to TTL level %d", cbNode->presence->TTLlevel);
1544 if (result != OC_STACK_OK)
1546 OC_LOG(ERROR, TAG, PCF("OCProcessPresence error"));
1553 * Called in main loop of OC client or server. Allows low-level processing of
1557 * OC_STACK_OK - no errors
1558 * OC_STACK_ERROR - stack process error
1560 OCStackResult OCProcess() {
1562 OC_LOG(INFO, TAG, PCF("Entering OCProcess"));
1563 #ifdef WITH_PRESENCE
1564 OCProcessPresence();
1567 CAHandleRequestResponse();
1575 #ifdef WITH_PRESENCE
1577 * When operating in @ref OCServer or @ref OCClientServer mode, this API will start sending out
1578 * presence notifications to clients via multicast. Once this API has been called with a success,
1579 * clients may query for this server's presence and this server's stack will respond via multicast.
1581 * Server can call this function when it comes online for the first time, or when it comes back
1582 * online from offline mode, or when it re enters network.
1584 * @param ttl - Time To Live in seconds
1585 * Note: If ttl is '0', then the default stack value will be used (60 Seconds).
1588 * OC_STACK_OK - No errors; Success
1590 OCStackResult OCStartPresence(const uint32_t ttl)
1592 OCChangeResourceProperty(
1593 &(((OCResource *)presenceResource.handle)->resourceProperties),
1598 presenceResource.presenceTTL = ttl;
1601 if(OC_PRESENCE_UNINITIALIZED == presenceState)
1603 OCDevAddr multiCastAddr;
1606 presenceState = OC_PRESENCE_INITIALIZED;
1607 OCGenerateCoAPToken(&token);
1608 OCBuildIPv4Address(224, 0, 1, 187, 5683, &multiCastAddr);
1609 //add the presence observer
1610 AddObserver(OC_PRESENCE_URI, NULL, 0, &token, &multiCastAddr,
1611 (OCResource *)presenceResource.handle, OC_LOW_QOS);
1614 // Each time OCStartPresence is called
1615 // a different random 32-bit integer number is used
1616 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
1618 return SendPresenceNotification(NULL);
1622 * When operating in @ref OCServer or @ref OCClientServer mode, this API will stop sending out
1623 * presence notifications to clients via multicast. Once this API has been called with a success,
1624 * this server's stack will not respond to clients querying for this server's presence.
1626 * Server can call this function when it is terminating, going offline, or when going
1627 * away from network.
1630 * OC_STACK_OK - No errors; Success
1632 OCStackResult OCStopPresence()
1634 OCStackResult result = OC_STACK_ERROR;
1635 //make resource inactive
1636 result = OCChangeResourceProperty(
1637 &(((OCResource *) presenceResource.handle)->resourceProperties),
1639 result = SendPresenceNotification(NULL);
1646 OCStackResult OCSetDefaultDeviceEntityHandler(OCDeviceEntityHandler entityHandler)
1648 defaultDeviceHandler = entityHandler;
1656 * @param handle - pointer to handle to newly created resource. Set by ocstack. Used to refer to resource
1657 * @param resourceTypeName - name of resource type. Example: "core.led"
1658 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
1659 * @param uri - URI of the resource. Example: "/a/led"
1660 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
1661 * NULL for default entity handler
1662 * @param resourceProperties - properties supported by resource. Example: OC_DISCOVERABLE|OC_OBSERVABLE
1665 * OC_STACK_OK - no errors
1666 * OC_STACK_ERROR - stack process error
1668 OCStackResult OCCreateResource(OCResourceHandle *handle,
1669 const char *resourceTypeName,
1670 const char *resourceInterfaceName,
1671 const char *uri, OCEntityHandler entityHandler,
1672 uint8_t resourceProperties) {
1674 OCResource *pointer = NULL;
1677 OCStackResult result = OC_STACK_ERROR;
1679 OC_LOG(INFO, TAG, PCF("Entering OCCreateResource"));
1681 if(myStackMode == OC_CLIENT)
1685 // Validate parameters
1686 // Is it presented during resource discovery?
1687 if (!handle || !resourceTypeName || !uri) {
1688 OC_LOG(ERROR, TAG, PCF("Input parameter is NULL"));
1689 return OC_STACK_INVALID_PARAM;
1692 if(!resourceInterfaceName || strlen(resourceInterfaceName) == 0) {
1693 resourceInterfaceName = OC_RSRVD_INTERFACE_DEFAULT;
1696 // Make sure resourceProperties bitmask has allowed properties specified
1697 if (resourceProperties
1698 > (OC_ACTIVE | OC_DISCOVERABLE | OC_OBSERVABLE | OC_SLOW | OC_SECURE)) {
1699 OC_LOG(ERROR, TAG, PCF("Invalid property"));
1700 return OC_STACK_INVALID_PARAM;
1703 // If the headResource is NULL, then no resources have been created...
1704 pointer = headResource;
1706 // At least one resources is in the resource list, so we need to search for
1707 // repeated URLs, which are not allowed. If a repeat is found, exit with an error
1709 if (strcmp(uri, pointer->uri) == 0) {
1710 OC_LOG(ERROR, TAG, PCF("URI already in use"));
1711 return OC_STACK_INVALID_PARAM;
1713 pointer = pointer->next;
1716 // Create the pointer and insert it into the resource list
1717 pointer = (OCResource *) OCCalloc(1, sizeof(OCResource));
1721 pointer->sequenceNum = OC_OFFSET_SEQUENCE_NUMBER;
1723 insertResource(pointer);
1726 size = strlen(uri) + 1;
1727 str = (char *) OCMalloc(size);
1731 strncpy(str, uri, size);
1734 // Set properties. Set OC_ACTIVE
1735 pointer->resourceProperties = (OCResourceProperty) (resourceProperties
1738 // Add the resourcetype to the resource
1739 result = BindResourceTypeToResource(pointer, resourceTypeName);
1740 if (result != OC_STACK_OK) {
1741 OC_LOG(ERROR, TAG, PCF("Error adding resourcetype"));
1745 // Add the resourceinterface to the resource
1746 result = BindResourceInterfaceToResource(pointer, resourceInterfaceName);
1747 if (result != OC_STACK_OK) {
1748 OC_LOG(ERROR, TAG, PCF("Error adding resourceinterface"));
1752 // If an entity handler has been passed, attach it to the newly created
1753 // resource. Otherwise, set the default entity handler.
1756 pointer->entityHandler = entityHandler;
1760 pointer->entityHandler = defaultResourceEHandler;
1764 result = OC_STACK_OK;
1766 #ifdef WITH_PRESENCE
1767 if(presenceResource.handle)
1769 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
1770 SendPresenceNotification(pointer->rsrcType);
1774 if (result != OC_STACK_OK)
1776 // Deep delete of resource and other dynamic elements that it contains
1777 deleteResource(pointer);
1786 * Create a resource. with host ip address for remote resource
1788 * @param handle - pointer to handle to newly created resource. Set by ocstack.
1789 * Used to refer to resource
1790 * @param resourceTypeName - name of resource type. Example: "core.led"
1791 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
1792 * @param host - HOST address of the remote resource. Example: "coap://xxx.xxx.xxx.xxx:xxxxx"
1793 * @param uri - URI of the resource. Example: "/a/led"
1794 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
1795 * NULL for default entity handler
1796 * @param resourceProperties - properties supported by resource.
1797 * Example: OC_DISCOVERABLE|OC_OBSERVABLE
1800 * OC_STACK_OK - no errors
1801 * OC_STACK_ERROR - stack process error
1804 OCStackResult OCCreateResourceWithHost(OCResourceHandle *handle,
1805 const char *resourceTypeName,
1806 const char *resourceInterfaceName,
1809 OCEntityHandler entityHandler,
1810 uint8_t resourceProperties)
1814 OCStackResult result = OC_STACK_ERROR;
1816 result = OCCreateResource(handle, resourceTypeName, resourceInterfaceName,
1817 uri, entityHandler, resourceProperties);
1819 if (result != OC_STACK_ERROR)
1822 size = strlen(host) + 1;
1823 str = (char *) OCMalloc(size);
1826 return OC_STACK_ERROR;
1828 strncpy(str, host, size);
1829 ((OCResource *) *handle)->host = str;
1836 * Add a resource to a collection resource.
1838 * @param collectionHandle - handle to the collection resource
1839 * @param resourceHandle - handle to resource to be added to the collection resource
1842 * OC_STACK_OK - no errors
1843 * OC_STACK_ERROR - stack process error
1844 * OC_STACK_INVALID_PARAM - invalid collectionhandle
1846 OCStackResult OCBindResource(
1847 OCResourceHandle collectionHandle, OCResourceHandle resourceHandle) {
1848 OCResource *resource;
1851 OC_LOG(INFO, TAG, PCF("Entering OCBindResource"));
1853 // Validate parameters
1854 VERIFY_NON_NULL(collectionHandle, ERROR, OC_STACK_ERROR);
1855 VERIFY_NON_NULL(resourceHandle, ERROR, OC_STACK_ERROR);
1856 // Container cannot contain itself
1857 if (collectionHandle == resourceHandle) {
1858 OC_LOG(ERROR, TAG, PCF("Added handle equals collection handle"));
1859 return OC_STACK_INVALID_PARAM;
1862 // Use the handle to find the resource in the resource linked list
1863 resource = findResource((OCResource *) collectionHandle);
1865 OC_LOG(ERROR, TAG, PCF("Collection handle not found"));
1866 return OC_STACK_INVALID_PARAM;
1869 // Look for an open slot to add add the child resource.
1870 // If found, add it and return success
1871 for (i = 0; i < MAX_CONTAINED_RESOURCES; i++) {
1872 if (!resource->rsrcResources[i]) {
1873 resource->rsrcResources[i] = (OCResource *) resourceHandle;
1874 OC_LOG(INFO, TAG, PCF("resource bound"));
1879 #ifdef WITH_PRESENCE
1880 if(presenceResource.handle)
1882 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
1883 SendPresenceNotification(((OCResource *) resourceHandle)->rsrcType);
1887 // Unable to add resourceHandle, so return error
1888 return OC_STACK_ERROR;
1892 * Remove a resource from a collection resource.
1894 * @param collectionHandle - handle to the collection resource
1895 * @param resourceHandle - handle to resource to be added to the collection resource
1898 * OC_STACK_OK - no errors
1899 * OC_STACK_ERROR - stack process error
1900 * OC_STACK_INVALID_PARAM - invalid collectionHandle
1902 OCStackResult OCUnBindResource(
1903 OCResourceHandle collectionHandle, OCResourceHandle resourceHandle) {
1904 OCResource *resource;
1907 OC_LOG(INFO, TAG, PCF("Entering OCUnBindResource"));
1909 // Validate parameters
1910 VERIFY_NON_NULL(collectionHandle, ERROR, OC_STACK_ERROR);
1911 VERIFY_NON_NULL(resourceHandle, ERROR, OC_STACK_ERROR);
1912 // Container cannot contain itself
1913 if (collectionHandle == resourceHandle) {
1914 OC_LOG(ERROR, TAG, PCF("removing handle equals collection handle"));
1915 return OC_STACK_INVALID_PARAM;
1918 // Use the handle to find the resource in the resource linked list
1919 resource = findResource((OCResource *) collectionHandle);
1921 OC_LOG(ERROR, TAG, PCF("Collection handle not found"));
1922 return OC_STACK_INVALID_PARAM;
1925 // Look for an open slot to add add the child resource.
1926 // If found, add it and return success
1927 for (i = 0; i < MAX_CONTAINED_RESOURCES; i++) {
1928 if (resourceHandle == resource->rsrcResources[i]) {
1929 resource->rsrcResources[i] = (OCResource *) NULL;
1930 OC_LOG(INFO, TAG, PCF("resource unbound"));
1935 OC_LOG(INFO, TAG, PCF("resource not found in collection"));
1937 #ifdef WITH_PRESENCE
1938 if(presenceResource.handle)
1940 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
1941 SendPresenceNotification(((OCResource *) resourceHandle)->rsrcType);
1945 // Unable to add resourceHandle, so return error
1946 return OC_STACK_ERROR;
1949 OCStackResult BindResourceTypeToResource(OCResource* resource,
1950 const char *resourceTypeName)
1952 OCResourceType *pointer = NULL;
1955 OCStackResult result = OC_STACK_ERROR;
1957 OC_LOG(INFO, TAG, PCF("Entering BindResourceTypeToResource"));
1959 // Validate parameters
1960 VERIFY_NON_NULL(resourceTypeName, ERROR, OC_STACK_INVALID_PARAM);
1961 // TODO: Does resource attribute resentation really have to be maintained in stack?
1962 // Is it presented during resource discovery?
1964 TODO ("Make sure that the resourcetypename doesn't already exist in the resource");
1966 // Create the resourcetype and insert it into the resource list
1967 pointer = (OCResourceType *) OCCalloc(1, sizeof(OCResourceType));
1972 // Set the resourceTypeName
1973 size = strlen(resourceTypeName) + 1;
1974 str = (char *) OCMalloc(size);
1978 strncpy(str, resourceTypeName, size);
1979 pointer->resourcetypename = str;
1981 insertResourceType(resource, pointer);
1982 result = OC_STACK_OK;
1984 exit: if (result != OC_STACK_OK) {
1992 OCStackResult BindResourceInterfaceToResource(OCResource* resource,
1993 const char *resourceInterfaceName)
1995 OCResourceInterface *pointer = NULL;
1998 OCStackResult result = OC_STACK_ERROR;
2000 OC_LOG(INFO, TAG, PCF("Entering BindResourceInterfaceToResource"));
2002 // Validate parameters
2003 VERIFY_NON_NULL(resourceInterfaceName, ERROR, OC_STACK_INVALID_PARAM);
2005 TODO ("Make sure that the resourceinterface name doesn't already exist in the resource");
2007 // Create the resourceinterface and insert it into the resource list
2008 pointer = (OCResourceInterface *) OCCalloc(1, sizeof(OCResourceInterface));
2013 // Set the resourceinterface name
2014 size = strlen(resourceInterfaceName) + 1;
2015 str = (char *) OCMalloc(size);
2019 strncpy(str, resourceInterfaceName, size);
2020 pointer->name = str;
2022 // Bind the resourceinterface to the resource
2023 insertResourceInterface(resource, pointer);
2025 result = OC_STACK_OK;
2027 exit: if (result != OC_STACK_OK) {
2036 * Bind a resourcetype to a resource.
2038 * @param handle - handle to the resource
2039 * @param resourceTypeName - name of resource type. Example: "core.led"
2042 * OC_STACK_OK - no errors
2043 * OC_STACK_ERROR - stack process error
2045 OCStackResult OCBindResourceTypeToResource(OCResourceHandle handle,
2046 const char *resourceTypeName) {
2048 OCStackResult result = OC_STACK_ERROR;
2049 OCResource *resource;
2051 // Make sure resource exists
2052 resource = findResource((OCResource *) handle);
2054 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2055 return OC_STACK_ERROR;
2058 // call internal function
2059 result = BindResourceTypeToResource(resource, resourceTypeName);
2061 #ifdef WITH_PRESENCE
2062 if(presenceResource.handle)
2064 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
2065 SendPresenceNotification(resource->rsrcType);
2073 * Bind a resourceinterface to a resource.
2075 * @param handle - handle to the resource
2076 * @param resourceInterfaceName - name of resource interface. Example: "oc.mi.b"
2079 * OC_STACK_OK - no errors
2080 * OC_STACK_ERROR - stack process error
2083 OCStackResult OCBindResourceInterfaceToResource(OCResourceHandle handle,
2084 const char *resourceInterfaceName) {
2086 OCStackResult result = OC_STACK_ERROR;
2087 OCResource *resource;
2089 // Make sure resource exists
2090 resource = findResource((OCResource *) handle);
2092 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2093 return OC_STACK_ERROR;
2096 // call internal function
2097 result = BindResourceInterfaceToResource(resource, resourceInterfaceName);
2099 #ifdef WITH_PRESENCE
2100 if(presenceResource.handle)
2102 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
2103 SendPresenceNotification(resource->rsrcType);
2111 * Get the number of resources that have been created in the stack.
2113 * @param numResources - pointer to count variable
2116 * OC_STACK_OK - no errors
2117 * OC_STACK_ERROR - stack process error
2120 OCStackResult OCGetNumberOfResources(uint8_t *numResources) {
2121 OCResource *pointer = headResource;
2123 OC_LOG(INFO, TAG, PCF("Entering OCGetNumberOfResources"));
2124 VERIFY_NON_NULL(numResources, ERROR, OC_STACK_INVALID_PARAM);
2127 *numResources = *numResources + 1;
2128 pointer = pointer->next;
2134 * Get a resource handle by index.
2136 * @param index - index of resource, 0 to Count - 1
2139 * Resource handle - if found
2140 * NULL - if not found
2142 OCResourceHandle OCGetResourceHandle(uint8_t index) {
2143 OCResource *pointer = headResource;
2146 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceHandle"));
2148 // Iterate through the list
2149 while ((i < index) && pointer) {
2151 pointer = pointer->next;
2153 return (OCResourceHandle) pointer;
2157 * Delete resource specified by handle. Deletes resource and all resourcetype and resourceinterface
2160 * @param handle - handle of resource to be deleted
2163 * OC_STACK_OK - no errors
2164 * OC_STACK_ERROR - stack process error
2165 * OC_STACK_NO_RESOURCE - resource not found
2166 * OC_STACK_INVALID_PARAM - invalid param
2168 OCStackResult OCDeleteResource(OCResourceHandle handle) {
2169 OC_LOG(INFO, TAG, PCF("Entering OCDeleteResource"));
2172 OC_LOG(ERROR, TAG, PCF("Invalid param"));
2173 return OC_STACK_INVALID_PARAM;
2176 OCResource *resource = findResource((OCResource *) handle);
2177 if (resource == NULL) {
2178 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2179 return OC_STACK_NO_RESOURCE;
2182 if (deleteResource((OCResource *) handle) == 0) {
2183 OC_LOG(ERROR, TAG, PCF("Error deleting resource"));
2184 return OC_STACK_ERROR;
2191 * Get the URI of the resource specified by handle.
2193 * @param handle - handle of resource
2195 * URI string - if resource found
2196 * NULL - resource not found
2198 const char *OCGetResourceUri(OCResourceHandle handle) {
2199 OCResource *resource;
2200 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceUri"));
2202 resource = findResource((OCResource *) handle);
2204 return resource->uri;
2206 return (const char *) NULL;
2210 * Get the properties of the resource specified by handle.
2211 * NOTE: that after a resource is created, the OC_ACTIVE property is set
2212 * for the resource by the stack.
2214 * @param handle - handle of resource
2216 * property bitmap - if resource found
2217 * NULL - resource not found
2219 uint8_t OCGetResourceProperties(OCResourceHandle handle) {
2220 OCResource *resource;
2221 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceProperties"));
2223 resource = findResource((OCResource *) handle);
2225 return resource->resourceProperties;
2231 * Get the number of resource types of the resource.
2233 * @param handle - handle of resource
2234 * @param numResourceTypes - pointer to count variable
2237 * OC_STACK_OK - no errors
2238 * OC_STACK_ERROR - stack process error
2240 OCStackResult OCGetNumberOfResourceTypes(OCResourceHandle handle,
2241 uint8_t *numResourceTypes) {
2242 OCResource *resource;
2243 OCResourceType *pointer;
2245 OC_LOG(INFO, TAG, PCF("Entering OCGetNumberOfResourceTypes"));
2246 VERIFY_NON_NULL(numResourceTypes, ERROR, OC_STACK_INVALID_PARAM);
2247 VERIFY_NON_NULL(handle, ERROR, OC_STACK_INVALID_PARAM);
2249 *numResourceTypes = 0;
2251 resource = findResource((OCResource *) handle);
2253 pointer = resource->rsrcType;
2255 *numResourceTypes = *numResourceTypes + 1;
2256 pointer = pointer->next;
2263 * Get name of resource type of the resource.
2265 * @param handle - handle of resource
2266 * @param index - index of resource, 0 to Count - 1
2269 * resource type name - if resource found
2270 * NULL - resource not found
2272 const char *OCGetResourceTypeName(OCResourceHandle handle, uint8_t index) {
2273 OCResourceType *resourceType;
2275 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceTypeName"));
2277 resourceType = findResourceTypeAtIndex(handle, index);
2279 return resourceType->resourcetypename;
2281 return (const char *) NULL;
2287 * Get the number of resource interfaces of the resource.
2289 * @param handle - handle of resource
2290 * @param numResources - pointer to count variable
2293 * OC_STACK_OK - no errors
2294 * OC_STACK_ERROR - stack process error
2296 OCStackResult OCGetNumberOfResourceInterfaces(OCResourceHandle handle,
2297 uint8_t *numResourceInterfaces) {
2298 OCResourceInterface *pointer;
2299 OCResource *resource;
2301 OC_LOG(INFO, TAG, PCF("Entering OCGetNumberOfResourceInterfaces"));
2303 VERIFY_NON_NULL(handle, ERROR, OC_STACK_INVALID_PARAM);
2304 VERIFY_NON_NULL(numResourceInterfaces, ERROR, OC_STACK_INVALID_PARAM);
2306 *numResourceInterfaces = 0;
2307 resource = findResource((OCResource *) handle);
2309 pointer = resource->rsrcInterface;
2311 *numResourceInterfaces = *numResourceInterfaces + 1;
2312 pointer = pointer->next;
2319 * Get name of resource interface of the resource.
2321 * @param handle - handle of resource
2322 * @param index - index of resource, 0 to Count - 1
2325 * resource interface name - if resource found
2326 * NULL - resource not found
2328 const char *OCGetResourceInterfaceName(OCResourceHandle handle, uint8_t index) {
2329 OCResourceInterface *resourceInterface;
2331 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceInterfaceName"));
2333 resourceInterface = findResourceInterfaceAtIndex(handle, index);
2334 if (resourceInterface) {
2335 return resourceInterface->name;
2337 return (const char *) NULL;
2341 * Get resource handle from the collection resource by index.
2343 * @param collectionHandle - handle of collection resource
2344 * @param index - index of contained resource, 0 to Count - 1
2347 * handle to resource - if resource found
2348 * NULL - resource not found
2350 OCResourceHandle OCGetResourceHandleFromCollection(OCResourceHandle collectionHandle,
2352 OCResource *resource;
2354 OC_LOG(INFO, TAG, PCF("Entering OCGetContainedResource"));
2356 if (index >= MAX_CONTAINED_RESOURCES) {
2360 resource = findResource((OCResource *) collectionHandle);
2365 return resource->rsrcResources[index];
2369 * Bind an entity handler to the resource.
2371 * @param handle - handle to the resource that the contained resource is to be bound
2372 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
2374 * OC_STACK_OK - no errors
2375 * OC_STACK_ERROR - stack process error
2377 OCStackResult OCBindResourceHandler(OCResourceHandle handle,
2378 OCEntityHandler entityHandler) {
2379 OCResource *resource;
2381 OC_LOG(INFO, TAG, PCF("Entering OCBindResourceHandler"));
2383 // Validate parameters
2384 VERIFY_NON_NULL(handle, ERROR, OC_STACK_INVALID_PARAM);
2385 //VERIFY_NON_NULL(entityHandler, ERROR, OC_STACK_INVALID_PARAM);
2387 // Use the handle to find the resource in the resource linked list
2388 resource = findResource((OCResource *)handle);
2390 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2391 return OC_STACK_ERROR;
2395 resource->entityHandler = entityHandler;
2397 #ifdef WITH_PRESENCE
2398 if(presenceResource.handle)
2400 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
2401 SendPresenceNotification(resource->rsrcType);
2409 * Get the entity handler for a resource.
2411 * @param handle - handle of resource
2414 * entity handler - if resource found
2415 * NULL - resource not found
2417 OCEntityHandler OCGetResourceHandler(OCResourceHandle handle) {
2418 OCResource *resource;
2420 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceHandler"));
2422 // Use the handle to find the resource in the resource linked list
2423 resource = findResource((OCResource *)handle);
2425 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2430 return resource->entityHandler;
2433 void incrementSequenceNumber(OCResource * resPtr)
2435 // Increment the sequence number
2436 resPtr->sequenceNum += 1;
2437 if (resPtr->sequenceNum == MAX_SEQUENCE_NUMBER)
2439 resPtr->sequenceNum = OC_OFFSET_SEQUENCE_NUMBER+1;
2445 * Notify Presence subscribers that a resource has been modified
2447 * @param resourceType - Handle to the resourceType linked list of resource
2448 * that was modified.
2449 * @param qos - Quality Of Service
2452 #ifdef WITH_PRESENCE
2453 OCStackResult SendPresenceNotification(OCResourceType *resourceType)
2455 OCResource *resPtr = NULL;
2456 OCStackResult result;
2457 OCMethod method = OC_REST_PRESENCE;
2458 uint32_t maxAge = 0;
2459 resPtr = findResource((OCResource *) presenceResource.handle);
2462 return OC_STACK_NO_RESOURCE;
2464 if((((OCResource *) presenceResource.handle)->resourceProperties) & OC_ACTIVE)
2466 maxAge = presenceResource.presenceTTL;
2473 result = SendAllObserverNotification(method, resPtr, maxAge, resourceType, OC_LOW_QOS);
2476 #endif // WITH_PRESENCE
2478 * Notify observers that an observed value has changed.
2480 * @param handle - handle of resource
2483 * OC_STACK_OK - no errors
2484 * OC_STACK_NO_RESOURCE - invalid resource handle
2485 * OC_STACK_NO_OBSERVERS - no more observers intrested in resource
2487 OCStackResult OCNotifyAllObservers(OCResourceHandle handle, OCQualityOfService qos) {
2489 OC_LOG(INFO, TAG, PCF("Entering OCNotifyAllObservers"));
2491 OCResource *resPtr = NULL;
2492 OCStackResult result;
2493 OCMethod method = OC_REST_NOMETHOD;
2494 uint32_t maxAge = 0;
2496 OC_LOG(INFO, TAG, PCF("Entering OCNotifyAllObservers"));
2497 #ifdef WITH_PRESENCE
2498 if(handle == presenceResource.handle)
2502 #endif // WITH_PRESENCE
2503 VERIFY_NON_NULL(handle, ERROR, OC_STACK_ERROR);
2505 // Verify that the resource exists
2506 resPtr = findResource ((OCResource *) handle);
2509 return OC_STACK_NO_RESOURCE;
2513 //only increment in the case of regular observing (not presence)
2514 incrementSequenceNumber(resPtr);
2515 method = OC_REST_OBSERVE;
2516 maxAge = MAX_OBSERVE_AGE;
2517 #ifdef WITH_PRESENCE
2518 result = SendAllObserverNotification (method, resPtr, maxAge, NULL, qos);
2520 result = SendAllObserverNotification (method, resPtr, maxAge, qos);
2527 OCNotifyListOfObservers (OCResourceHandle handle,
2528 OCObservationId *obsIdList,
2529 uint8_t numberOfIds,
2530 unsigned char *notificationJSONPayload,
2531 OCQualityOfService qos)
2533 OC_LOG(INFO, TAG, PCF("Entering OCNotifyListOfObservers"));
2535 OCResource *resPtr = NULL;
2536 //TODO: we should allow the server to define this
2537 uint32_t maxAge = MAX_OBSERVE_AGE;
2539 VERIFY_NON_NULL(handle, ERROR, OC_STACK_ERROR);
2540 VERIFY_NON_NULL(obsIdList, ERROR, OC_STACK_ERROR);
2541 VERIFY_NON_NULL(notificationJSONPayload, ERROR, OC_STACK_ERROR);
2543 // Verify that the resource exists
2544 resPtr = findResource ((OCResource *) handle);
2545 if (NULL == resPtr || myStackMode == OC_CLIENT)
2547 return OC_STACK_NO_RESOURCE;
2551 incrementSequenceNumber(resPtr);
2553 return (SendListObserverNotification(resPtr, obsIdList, numberOfIds,
2554 notificationJSONPayload, maxAge, qos));
2558 * Send a response to a request.
2559 * The response can be a regular, slow, or block (i.e. a response that
2560 * is too large to be sent in a single PDU and must span multiple transmissions)
2562 * @param response - pointer to structure that contains response parameters
2565 * OC_STACK_OK - No errors; Success
2566 * OC_STACK_INVALID_PARAM - Invalid pointer to OCServerResponse
2567 * OC_STACK_INVALID_REQUEST_HANDLE - Request handle not found
2568 * OC_STACK_PERSISTENT_BUFFER_REQUIRED - Block transfer needed for response, so a
2569 * persistent response buffer is necessary
2571 OCStackResult OCDoResponse(OCEntityHandlerResponse *ehResponse)
2573 OCStackResult result = OC_STACK_ERROR;
2574 OCServerRequest *serverRequest = NULL;
2576 OC_LOG(INFO, TAG, PCF("Entering OCDoResponse"));
2578 // Validate input parameters
2579 VERIFY_NON_NULL(ehResponse, ERROR, OC_STACK_INVALID_PARAM);
2580 VERIFY_NON_NULL(ehResponse->requestHandle, ERROR, OC_STACK_INVALID_PARAM);
2582 // TODO: Placeholder for creating a response entry when implementing
2583 // block transfer feature
2585 // If a response payload is present, check if block transfer is required
2586 if (ehResponse->payload && OCIsPacketTransferRequired(NULL,
2587 (const char *)ehResponse->payload, ehResponse->payloadSize))
2589 OC_LOG(INFO, TAG, PCF("Block transfer required"));
2591 // Persistent response buffer is needed for block transfer
2592 if (!ehResponse->persistentBufferFlag)
2594 OC_LOG(WARNING, TAG, PCF("Persistent response buffer required"));
2595 return OC_STACK_PERSISTENT_BUFFER_REQUIRED;
2597 // TODO: Placeholder for block transfer handling
2598 // TODO: Placeholder for setting the the response handle in the OCServerResponse struct
2599 // when implementing the block transfer feature
2605 // Get pointer to request info
2606 serverRequest = GetServerRequestUsingHandle((OCServerRequest *)ehResponse->requestHandle);
2609 result = serverRequest->ehResponseHandler(ehResponse);
2616 * Cancel a response. Applies to a block response
2618 * @param responseHandle - response handle set by stack in OCServerResponse after
2619 * OCDoResponse is called
2622 * OC_STACK_OK - No errors; Success
2623 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
2625 OCStackResult OCCancelResponse(OCResponseHandle responseHandle)
2627 OCStackResult result = OC_STACK_NOTIMPL;
2629 OC_LOG(INFO, TAG, PCF("Entering OCCancelResponse"));
2631 // TODO: validate response handle
2636 //-----------------------------------------------------------------------------
2637 // Private internal function definitions
2638 //-----------------------------------------------------------------------------
2640 * Generate handle of OCDoResource invocation for callback management.
2642 static OCDoHandle GenerateInvocationHandle()
2644 OCDoHandle handle = NULL;
2645 // Generate token here, it will be deleted when the transaction is deleted
2646 handle = (OCDoHandle) OCMalloc(sizeof(uint8_t[MAX_TOKEN_LENGTH]));
2649 OCFillRandomMem((uint8_t*)handle, sizeof(uint8_t[MAX_TOKEN_LENGTH]));
2654 #ifdef WITH_PRESENCE
2655 OCStackResult OCChangeResourceProperty(OCResourceProperty * inputProperty,
2656 OCResourceProperty resourceProperties, uint8_t enable)
2658 if (resourceProperties
2659 > (OC_ACTIVE | OC_DISCOVERABLE | OC_OBSERVABLE | OC_SLOW)) {
2660 OC_LOG(ERROR, TAG, PCF("Invalid property"));
2661 return OC_STACK_INVALID_PARAM;
2665 *inputProperty = (OCResourceProperty) (*inputProperty & ~(resourceProperties));
2669 *inputProperty = (OCResourceProperty) (*inputProperty | resourceProperties);
2676 * Initialize resource data structures, variables, etc.
2678 OCStackResult initResources() {
2679 OCStackResult result = OC_STACK_OK;
2680 // Init application resource vars
2681 headResource = NULL;
2682 // Init Virtual Resources
2683 #ifdef WITH_PRESENCE
2684 presenceResource.presenceTTL = OC_DEFAULT_PRESENCE_TTL;
2685 //presenceResource.token = OCGenerateCoAPToken();
2686 result = OCCreateResource(&presenceResource.handle,
2687 OC_RSRVD_RESOURCE_TYPE_PRESENCE,
2692 //make resource inactive
2693 result = OCChangeResourceProperty(
2694 &(((OCResource *) presenceResource.handle)->resourceProperties),
2701 * Add a resource to the end of the linked list of resources.
2703 * @param resource - resource to be added
2705 void insertResource(OCResource *resource) {
2706 OCResource *pointer;
2708 if (!headResource) {
2709 headResource = resource;
2711 pointer = headResource;
2713 while (pointer->next) {
2714 pointer = pointer->next;
2716 pointer->next = resource;
2718 resource->next = NULL;
2722 * Find a resource in the linked list of resources.
2724 * @param resource - resource to be found
2726 * NULL - resource not found
2727 * pointer to resource - pointer to resource that was found in the linked list
2729 OCResource *findResource(OCResource *resource) {
2730 OCResource *pointer = headResource;
2733 if (pointer == resource) {
2736 pointer = pointer->next;
2741 void deleteAllResources()
2743 OCResource *pointer = headResource;
2748 temp = pointer->next;
2749 #ifdef WITH_PRESENCE
2750 if(pointer != (OCResource *) presenceResource.handle)
2752 #endif // WITH_PRESENCE
2753 deleteResource(pointer);
2754 #ifdef WITH_PRESENCE
2756 #endif // WITH_PRESENCE
2760 #ifdef WITH_PRESENCE
2761 // Ensure that the last resource to be deleted is the presence resource. This allows for all
2762 // presence notification attributed to their deletion to be processed.
2763 deleteResource((OCResource *) presenceResource.handle);
2764 #endif // WITH_PRESENCE
2768 * Delete the resource from the linked list.
2770 * @param resource - resource to be deleted
2775 int deleteResource(OCResource *resource) {
2776 OCResource *prev = NULL;
2779 temp = headResource;
2781 if (temp == resource) {
2782 // Invalidate all Resource Properties.
2783 resource->resourceProperties = (OCResourceProperty) 0;
2784 #ifdef WITH_PRESENCE
2785 if(resource != (OCResource *) presenceResource.handle)
2787 #endif // WITH_PRESENCE
2788 OCNotifyAllObservers((OCResourceHandle)resource, OC_HIGH_QOS);
2789 #ifdef WITH_PRESENCE
2792 if(presenceResource.handle)
2794 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
2795 if(resource != (OCResource *) presenceResource.handle)
2797 SendPresenceNotification(resource->rsrcType);
2801 SendPresenceNotification(NULL);
2806 if (temp == headResource) {
2807 headResource = temp->next;
2809 prev->next = temp->next;
2812 deleteResourceElements(temp);
2825 * Delete all of the dynamically allocated elements that were created for the resource.
2827 * @param resource - specified resource
2829 void deleteResourceElements(OCResource *resource) {
2835 OCFree(resource->uri);
2837 // Delete resourcetype linked list
2838 deleteResourceType(resource->rsrcType);
2840 // Delete resourceinterface linked list
2841 deleteResourceInterface(resource->rsrcInterface);
2845 * Delete all of the dynamically allocated elements that were created for the resource type.
2847 * @param resourceType - specified resource type
2849 void deleteResourceType(OCResourceType *resourceType) {
2850 OCResourceType *pointer = resourceType;
2851 OCResourceType *next;
2854 next = pointer->next;
2855 OCFree(pointer->resourcetypename);
2862 * Delete all of the dynamically allocated elements that were created for the resource interface.
2864 * @param resourceInterface - specified resource interface
2866 void deleteResourceInterface(OCResourceInterface *resourceInterface) {
2867 OCResourceInterface *pointer = resourceInterface;
2868 OCResourceInterface *next;
2871 next = pointer->next;
2872 OCFree(pointer->name);
2879 * Insert a resource type into a resource's resource type linked list.
2881 * @param resource - resource where resource type is to be inserted
2882 * @param resourceType - resource type to be inserted
2884 void insertResourceType(OCResource *resource, OCResourceType *resourceType) {
2885 OCResourceType *pointer;
2887 if (resource && !resource->rsrcType) {
2888 resource->rsrcType = resourceType;
2892 pointer = resource->rsrcType;
2896 pointer = resourceType;
2898 while (pointer->next) {
2899 pointer = pointer->next;
2901 pointer->next = resourceType;
2903 resourceType->next = NULL;
2907 * Get a resource type at the specified index within a resource.
2909 * @param handle - handle of resource
2910 * @param index - index of resource type
2913 * resourcetype - if found
2916 OCResourceType *findResourceTypeAtIndex(OCResourceHandle handle, uint8_t index) {
2917 OCResource *resource;
2918 OCResourceType *pointer;
2921 // Find the specified resource
2922 resource = findResource((OCResource *) handle);
2927 // Make sure a resource has a resourcetype
2928 if (!resource->rsrcType) {
2932 // Iterate through the list
2933 pointer = resource->rsrcType;
2935 while ((i < index) && pointer) {
2937 pointer = pointer->next;
2943 * Finds a resource type in an OCResourceType link-list.
2945 * @param resourceTypeList - the link-list to be searched through
2946 * @param resourceTypeName - the key to search for
2949 * resourceType that matches the key (ie. resourceTypeName)
2950 * NULL - either an invalid parameter or this function was unable to find the key.
2952 OCResourceType *findResourceType(OCResourceType * resourceTypeList, const char * resourceTypeName)
2954 if(resourceTypeList && resourceTypeName)
2956 OCResourceType * rtPointer = resourceTypeList;
2957 while(resourceTypeName && rtPointer)
2959 if(rtPointer->resourcetypename &&
2960 strcmp(resourceTypeName, (const char *)
2961 (rtPointer->resourcetypename)) == 0)
2965 rtPointer = rtPointer->next;
2972 * Insert a resource interface into a resource's resource interface linked list.
2974 * @param resource - resource where resource interface is to be inserted
2975 * @param resourceInterface - resource interface to be inserted
2977 void insertResourceInterface(OCResource *resource,
2978 OCResourceInterface *resourceInterface) {
2979 OCResourceInterface *pointer;
2981 if (!resource->rsrcInterface) {
2982 resource->rsrcInterface = resourceInterface;
2984 pointer = resource->rsrcInterface;
2985 while (pointer->next) {
2986 pointer = pointer->next;
2988 pointer->next = resourceInterface;
2990 resourceInterface->next = NULL;
2994 * Get a resource interface at the specified index within a resource.
2996 * @param handle - handle of resource
2997 * @param index - index of resource interface
3000 * resourceinterface - if found
3003 OCResourceInterface *findResourceInterfaceAtIndex(OCResourceHandle handle,
3005 OCResource *resource;
3006 OCResourceInterface *pointer;
3009 // Find the specified resource
3010 resource = findResource((OCResource *) handle);
3015 // Make sure a resource has a resourceinterface
3016 if (!resource->rsrcInterface) {
3020 // Iterate through the list
3021 pointer = resource->rsrcInterface;
3023 while ((i < index) && pointer) {
3025 pointer = pointer->next;
3031 * Determine if a request/response must be sent in a block transfer because it is too large to be
3032 * sent in a single PDU. This function can be used for either a request or a response
3034 * @param request - NULL or pointer to request
3035 * @param response - NULL or pointer to response
3036 * @param size - 0 or size of the request/response. If 0, strlen is used for determining
3037 * the length of the request/response
3040 * 0 - packet transfer NOT required (i.e. normal request/response)
3041 * 1 - packet transfer required (i.e. block transfer needed)
3043 uint8_t OCIsPacketTransferRequired(const char *request, const char *response, uint16_t size)
3047 // Determine if we are checking a request or a response
3050 // If size is greater than 0, use it for the request size value, otherwise
3051 // assume request is null terminated and use strlen for size value
3052 if ((size > MAX_REQUEST_LENGTH) || (strlen(request) > MAX_REQUEST_LENGTH))
3059 // If size is greater than 0, use it for the response size value, otherwise
3060 // assume response is null terminated and use strlen for size value
3061 if ((size > MAX_RESPONSE_LENGTH) || (strlen(response) > MAX_RESPONSE_LENGTH))
3070 * Retrieves a resource type based upon a uri string if the uri string contains only just one
3071 * resource attribute (and that has to be of type "rt").
3073 * @remark This API malloc's memory for the resource type and newURI. Do not malloc resourceType
3074 * or newURI before passing in.
3076 * @param uri - Valid URI for "requiredUri" parameter to OCDoResource API.
3077 * @param resourceType - The resource type to be populated; pass by reference.
3078 * @param newURI - Return URI without resourceType appended to the end of it. This is used to
3079 * ensure that the uri parameter is not modified; pass by reference.
3082 * OC_STACK_INVALID_URI - Returns this if the URI is invalid/NULL.
3083 * OC_STACK_INVALID_PARAM - Returns this if the resourceType parameter is invalid/NULL.
3084 * OC_STACK_OK - Success
3086 OCStackResult getResourceType(const char * uri, unsigned char** resourceType, char ** newURI)
3090 return OC_STACK_INVALID_URI;
3092 if(!resourceType || !newURI)
3094 return OC_STACK_INVALID_PARAM;
3096 char * leftToken = NULL;
3097 char * tempURI = (char *) OCMalloc(strlen(uri) + 1);
3102 strcpy(tempURI, uri);
3103 leftToken = strtok((char *)tempURI, "?");
3105 while(leftToken != NULL)
3107 if(strncmp(leftToken, "rt=", 3) == 0)
3109 *resourceType = (unsigned char *) OCMalloc(strlen(leftToken)-3);
3114 strcpy((char *)*resourceType, ((const char *)&leftToken[3]));
3117 leftToken = strtok(NULL, "?");
3125 return OC_STACK_NO_MEMORY;
3128 const ServerID OCGetServerInstanceID(void)
3130 static bool generated = false;
3131 static ServerID sid;
3138 sid = OCGetRandom();
3143 const char* OCGetServerInstanceIDString(void)
3145 // max printed length of a base 10
3146 // uint32 is 10 characters, so 11 includes null.
3147 // This will change as the representation gets switched
3149 static char buffer[11];
3150 int n = sprintf(buffer, "%u", OCGetServerInstanceID());