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 result = getResourceType(requiredUri, &resourceType, &newUri);
1170 OC_LOG_V(DEBUG, TAG, "Got Resource Type: %s", resourceType);
1174 OC_LOG(DEBUG, TAG, PCF("Got Resource Type is NULL."));
1176 if(result != OC_STACK_OK)
1181 #endif // WITH_PRESENCE
1183 requestUri = (unsigned char *) OCMalloc(uriLen + 1);
1186 memcpy(requestUri, newUri, (uriLen + 1));
1190 result = OC_STACK_NO_MEMORY;
1194 *handle = GenerateInvocationHandle();
1197 result = OC_STACK_NO_MEMORY;
1202 memset(&requestData, 0, sizeof(CAInfo_t));
1203 memset(&requestInfo, 0, sizeof(CARequestInfo_t));
1207 case OC_REST_OBSERVE:
1208 case OC_REST_OBSERVE_ALL:
1209 case OC_REST_CANCEL_OBSERVE:
1211 requestInfo.method = CA_GET;
1216 requestInfo.method = CA_PUT;
1221 requestInfo.method = CA_POST;
1224 case OC_REST_DELETE:
1226 requestInfo.method = CA_DELETE;
1229 #ifdef WITH_PRESENCE
1230 case OC_REST_PRESENCE:
1231 //TODO-CA: What should be the CA method?
1235 result = OC_STACK_INVALID_METHOD;
1239 // TODO-CA: Handle multi-cast scenario
1240 // Create remote end point
1241 caResult = CACreateRemoteEndpoint(newUri, CA_WIFI, &endpoint);
1242 // TODO-CA: Connectivity type should be passed to API
1243 endpoint->connectivityType = CA_WIFI;
1244 if (caResult != CA_STATUS_OK)
1246 OC_LOG(ERROR, TAG, PCF("CACreateRemoteEndpoint error"));
1251 caResult = CAGenerateToken(&caToken);
1253 if (caResult != CA_STATUS_OK)
1255 OC_LOG(ERROR, TAG, PCF("CAGenerateToken error"));
1260 // TODO-CA: Map QoS to the right CA msg type
1261 requestData.type = CA_MSG_NONCONFIRM;
1262 requestData.token = caToken;
1263 if ((method == OC_REST_OBSERVE) || (method == OC_REST_OBSERVE_ALL))
1265 result = CreateObserveHeaderOption (&(requestData.options), options,
1266 numOptions, OC_OBSERVE_REGISTER);
1267 if (result != OC_STACK_OK)
1271 hdrOptionMemAlloc = 1;
1272 requestData.numOptions = numOptions + 1;
1276 requestData.options = (CAHeaderOption_t*)options;
1277 requestData.numOptions = numOptions;
1279 requestData.payload = (char *)request;
1281 requestInfo.info = requestData;
1284 caResult = CASendRequest(endpoint, &requestInfo);
1285 if (caResult != CA_STATUS_OK)
1287 OC_LOG(ERROR, TAG, PCF("CASendRequest"));
1291 if((result = AddClientCB(&clientCB, cbData, &caToken, handle, method,
1292 requestUri, resourceType)) != OC_STACK_OK)
1294 result = OC_STACK_NO_MEMORY;
1300 // Generate token which will be used by OCStack to match responses received
1302 OCGenerateCoAPToken(&token);
1304 if((result = AddClientCB(&clientCB, cbData, &token, handle, method, requestUri, resourceType))
1307 result = OC_STACK_NO_MEMORY;
1311 #ifdef WITH_PRESENCE
1312 if(method == OC_REST_PRESENCE)
1314 // Replacing method type with GET because "presence" is a stack layer only implementation.
1315 method = OC_REST_GET;
1319 // Make call to OCCoAP layer
1320 result = OCDoCoAPResource(method, qos, &token, newUri, request, options, numOptions);
1324 if(newUri != requiredUri)
1328 if (result != OC_STACK_OK)
1330 OC_LOG(ERROR, TAG, PCF("OCDoResource error"));
1331 FindAndDeleteClientCB(clientCB);
1334 CADestroyRemoteEndpoint(endpoint);
1335 if (hdrOptionMemAlloc)
1337 OCFree(requestData.options);
1344 * Cancel a request associated with a specific @ref OCDoResource invocation.
1346 * @param handle - Used to identify a specific OCDoResource invocation.
1347 * @param qos - used to specify Quality of Service (read below for more info)
1348 * @param options- used to specify vendor specific header options when sending
1349 * explicit observe cancellation
1350 * @param numOptions- Number of header options to be included
1353 * OC_STACK_OK - No errors; Success
1354 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
1356 OCStackResult OCCancel(OCDoHandle handle, OCQualityOfService qos, OCHeaderOption * options,
1360 * This ftn is implemented one of two ways in the case of observation:
1362 * 1. qos == OC_NON_CONFIRMABLE. When observe is unobserved..
1363 * Remove the callback associated on client side.
1364 * When the next notification comes in from server,
1365 * reply with RESET message to server.
1366 * Keep in mind that the server will react to RESET only
1367 * if the last notification was sent ans CON
1369 * 2. qos == OC_CONFIRMABLE. When OCCancel is called,
1370 * and it is associated with an observe request
1371 * (i.e. ClientCB->method == OC_REST_OBSERVE || OC_REST_OBSERVE_ALL),
1372 * Send CON Observe request to server with
1373 * observe flag = OC_RESOURCE_OBSERVE_DEREGISTER.
1374 * Remove the callback associated on client side.
1376 OCStackResult ret = OC_STACK_OK;
1378 CARemoteEndpoint_t* endpoint = NULL;
1379 CAResult_t caResult;
1380 CAInfo_t requestData;
1381 CARequestInfo_t requestInfo;
1382 // Track if memory is allocated for additional header options
1383 uint8_t hdrOptionMemAlloc = 0;
1387 return OC_STACK_INVALID_PARAM;
1390 OC_LOG(INFO, TAG, PCF("Entering OCCancel"));
1392 ClientCB *clientCB = GetClientCB(NULL, handle, NULL);
1395 switch (clientCB->method)
1397 case OC_REST_OBSERVE:
1398 case OC_REST_OBSERVE_ALL:
1400 caResult = CACreateRemoteEndpoint((char *)clientCB->requestUri, CA_WIFI,
1402 endpoint->connectivityType = CA_WIFI;
1403 if (caResult != CA_STATUS_OK)
1405 OC_LOG(ERROR, TAG, PCF("CACreateRemoteEndpoint error"));
1406 return OC_STACK_ERROR;
1409 memset(&requestData, 0, sizeof(CAInfo_t));
1410 // TODO-CA: Map QoS to the right CA msg type
1411 requestData.type = CA_MSG_NONCONFIRM;
1412 requestData.token = clientCB->token;
1413 if (CreateObserveHeaderOption (&(requestData.options),
1414 options, numOptions, OC_OBSERVE_DEREGISTER) != OC_STACK_OK)
1416 return OC_STACK_ERROR;
1418 hdrOptionMemAlloc = 1;
1419 requestData.numOptions = numOptions + 1;
1420 memset(&requestInfo, 0, sizeof(CARequestInfo_t));
1421 requestInfo.method = CA_GET;
1422 requestInfo.info = requestData;
1424 caResult = CASendRequest(endpoint, &requestInfo);
1425 if (caResult != CA_STATUS_OK)
1427 OC_LOG(ERROR, TAG, PCF("CASendRequest error"));
1429 if(caResult == CA_STATUS_OK)
1434 if(qos == OC_HIGH_QOS)
1436 ret = OCDoCoAPResource(OC_REST_CANCEL_OBSERVE, qos,
1437 &(clientCB->token), (const char *) clientCB->requestUri, NULL, options,
1442 FindAndDeleteClientCB(clientCB);
1446 #ifdef WITH_PRESENCE
1447 case OC_REST_PRESENCE:
1448 FindAndDeleteClientCB(clientCB);
1452 return OC_STACK_INVALID_METHOD;
1456 CADestroyRemoteEndpoint(endpoint);
1457 if (hdrOptionMemAlloc)
1459 OCFree(requestData.options);
1465 #ifdef WITH_PRESENCE
1466 OCStackResult OCProcessPresence()
1468 OCStackResult result = OC_STACK_OK;
1469 uint8_t ipAddr[4] = { 0 };
1472 OC_LOG(INFO, TAG, PCF("Entering RequestPresence"));
1473 ClientCB* cbNode = NULL;
1475 OCClientResponse clientResponse;
1476 OCResponse * response = NULL;
1478 LL_FOREACH(cbList, cbNode) {
1479 if(OC_REST_PRESENCE == cbNode->method)
1481 if(cbNode->presence)
1483 uint32_t now = GetTime(0);
1484 OC_LOG_V(DEBUG, TAG, "----------------this TTL level %d", cbNode->presence->TTLlevel);
1485 OC_LOG_V(DEBUG, TAG, "----------------current ticks %d", now);
1488 if(cbNode->presence->TTLlevel >= (PresenceTimeOutSize + 1))
1493 if(cbNode->presence->TTLlevel < PresenceTimeOutSize){
1494 OC_LOG_V(DEBUG, TAG, "----------------timeout ticks %d",
1495 cbNode->presence->timeOut[cbNode->presence->TTLlevel]);
1498 if(cbNode->presence->TTLlevel >= PresenceTimeOutSize)
1500 OC_LOG(DEBUG, TAG, PCF("----------------No more timeout ticks"));
1501 if (ParseIPv4Address( cbNode->requestUri, ipAddr, &port))
1503 OCBuildIPv4Address(ipAddr[0], ipAddr[1], ipAddr[2], ipAddr[3], port,
1505 result = FormOCClientResponse(&clientResponse, OC_STACK_PRESENCE_TIMEOUT,
1506 (OCDevAddr *) &dst, 0, NULL);
1507 if(result != OC_STACK_OK)
1511 result = FormOCResponse(&response, cbNode, 0, NULL, NULL,
1512 &cbNode->token, &clientResponse, NULL);
1513 if(result != OC_STACK_OK)
1518 // Increment the TTLLevel (going to a next state), so we don't keep
1519 // sending presence notification to client.
1520 cbNode->presence->TTLlevel++;
1521 OC_LOG_V(DEBUG, TAG, "----------------moving to TTL level %d",
1522 cbNode->presence->TTLlevel);
1526 result = OC_STACK_INVALID_IP;
1529 HandleStackResponses(response);
1531 if(now >= cbNode->presence->timeOut[cbNode->presence->TTLlevel])
1533 OC_LOG(DEBUG, TAG, PCF("time to test server presence =========="));
1535 OCGenerateCoAPToken(&token);
1536 result = OCDoCoAPResource(OC_REST_GET, OC_LOW_QOS,
1537 &token, (const char *)cbNode->requestUri, NULL, NULL, 0);
1538 if(result != OC_STACK_OK)
1542 cbNode->presence->TTLlevel++;
1543 OC_LOG_V(DEBUG, TAG, "----------------moving to TTL level %d", cbNode->presence->TTLlevel);
1549 if (result != OC_STACK_OK)
1551 OC_LOG(ERROR, TAG, PCF("OCProcessPresence error"));
1558 * Called in main loop of OC client or server. Allows low-level processing of
1562 * OC_STACK_OK - no errors
1563 * OC_STACK_ERROR - stack process error
1565 OCStackResult OCProcess() {
1567 OC_LOG(INFO, TAG, PCF("Entering OCProcess"));
1568 #ifdef WITH_PRESENCE
1569 OCProcessPresence();
1572 CAHandleRequestResponse();
1580 #ifdef WITH_PRESENCE
1582 * When operating in @ref OCServer or @ref OCClientServer mode, this API will start sending out
1583 * presence notifications to clients via multicast. Once this API has been called with a success,
1584 * clients may query for this server's presence and this server's stack will respond via multicast.
1586 * Server can call this function when it comes online for the first time, or when it comes back
1587 * online from offline mode, or when it re enters network.
1589 * @param ttl - Time To Live in seconds
1590 * Note: If ttl is '0', then the default stack value will be used (60 Seconds).
1593 * OC_STACK_OK - No errors; Success
1595 OCStackResult OCStartPresence(const uint32_t ttl)
1597 OCChangeResourceProperty(
1598 &(((OCResource *)presenceResource.handle)->resourceProperties),
1603 presenceResource.presenceTTL = ttl;
1606 if(OC_PRESENCE_UNINITIALIZED == presenceState)
1608 OCDevAddr multiCastAddr;
1611 presenceState = OC_PRESENCE_INITIALIZED;
1612 OCGenerateCoAPToken(&token);
1613 OCBuildIPv4Address(224, 0, 1, 187, 5683, &multiCastAddr);
1614 //add the presence observer
1615 AddObserver(OC_PRESENCE_URI, NULL, 0, &token, &multiCastAddr,
1616 (OCResource *)presenceResource.handle, OC_LOW_QOS);
1619 // Each time OCStartPresence is called
1620 // a different random 32-bit integer number is used
1621 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
1623 return SendPresenceNotification(NULL);
1627 * When operating in @ref OCServer or @ref OCClientServer mode, this API will stop sending out
1628 * presence notifications to clients via multicast. Once this API has been called with a success,
1629 * this server's stack will not respond to clients querying for this server's presence.
1631 * Server can call this function when it is terminating, going offline, or when going
1632 * away from network.
1635 * OC_STACK_OK - No errors; Success
1637 OCStackResult OCStopPresence()
1639 OCStackResult result = OC_STACK_ERROR;
1640 //make resource inactive
1641 result = OCChangeResourceProperty(
1642 &(((OCResource *) presenceResource.handle)->resourceProperties),
1644 result = SendPresenceNotification(NULL);
1651 OCStackResult OCSetDefaultDeviceEntityHandler(OCDeviceEntityHandler entityHandler)
1653 defaultDeviceHandler = entityHandler;
1661 * @param handle - pointer to handle to newly created resource. Set by ocstack. Used to refer to resource
1662 * @param resourceTypeName - name of resource type. Example: "core.led"
1663 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
1664 * @param uri - URI of the resource. Example: "/a/led"
1665 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
1666 * NULL for default entity handler
1667 * @param resourceProperties - properties supported by resource. Example: OC_DISCOVERABLE|OC_OBSERVABLE
1670 * OC_STACK_OK - no errors
1671 * OC_STACK_ERROR - stack process error
1673 OCStackResult OCCreateResource(OCResourceHandle *handle,
1674 const char *resourceTypeName,
1675 const char *resourceInterfaceName,
1676 const char *uri, OCEntityHandler entityHandler,
1677 uint8_t resourceProperties) {
1679 OCResource *pointer = NULL;
1682 OCStackResult result = OC_STACK_ERROR;
1684 OC_LOG(INFO, TAG, PCF("Entering OCCreateResource"));
1686 if(myStackMode == OC_CLIENT)
1690 // Validate parameters
1691 // Is it presented during resource discovery?
1692 if (!handle || !resourceTypeName || !uri) {
1693 OC_LOG(ERROR, TAG, PCF("Input parameter is NULL"));
1694 return OC_STACK_INVALID_PARAM;
1697 if(!resourceInterfaceName || strlen(resourceInterfaceName) == 0) {
1698 resourceInterfaceName = OC_RSRVD_INTERFACE_DEFAULT;
1701 // Make sure resourceProperties bitmask has allowed properties specified
1702 if (resourceProperties
1703 > (OC_ACTIVE | OC_DISCOVERABLE | OC_OBSERVABLE | OC_SLOW | OC_SECURE)) {
1704 OC_LOG(ERROR, TAG, PCF("Invalid property"));
1705 return OC_STACK_INVALID_PARAM;
1708 // If the headResource is NULL, then no resources have been created...
1709 pointer = headResource;
1711 // At least one resources is in the resource list, so we need to search for
1712 // repeated URLs, which are not allowed. If a repeat is found, exit with an error
1714 if (strcmp(uri, pointer->uri) == 0) {
1715 OC_LOG(ERROR, TAG, PCF("URI already in use"));
1716 return OC_STACK_INVALID_PARAM;
1718 pointer = pointer->next;
1721 // Create the pointer and insert it into the resource list
1722 pointer = (OCResource *) OCCalloc(1, sizeof(OCResource));
1726 pointer->sequenceNum = OC_OFFSET_SEQUENCE_NUMBER;
1728 insertResource(pointer);
1731 size = strlen(uri) + 1;
1732 str = (char *) OCMalloc(size);
1736 strncpy(str, uri, size);
1739 // Set properties. Set OC_ACTIVE
1740 pointer->resourceProperties = (OCResourceProperty) (resourceProperties
1743 // Add the resourcetype to the resource
1744 result = BindResourceTypeToResource(pointer, resourceTypeName);
1745 if (result != OC_STACK_OK) {
1746 OC_LOG(ERROR, TAG, PCF("Error adding resourcetype"));
1750 // Add the resourceinterface to the resource
1751 result = BindResourceInterfaceToResource(pointer, resourceInterfaceName);
1752 if (result != OC_STACK_OK) {
1753 OC_LOG(ERROR, TAG, PCF("Error adding resourceinterface"));
1757 // If an entity handler has been passed, attach it to the newly created
1758 // resource. Otherwise, set the default entity handler.
1761 pointer->entityHandler = entityHandler;
1765 pointer->entityHandler = defaultResourceEHandler;
1769 result = OC_STACK_OK;
1771 #ifdef WITH_PRESENCE
1772 if(presenceResource.handle)
1774 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
1775 SendPresenceNotification(pointer->rsrcType);
1779 if (result != OC_STACK_OK)
1781 // Deep delete of resource and other dynamic elements that it contains
1782 deleteResource(pointer);
1791 * Create a resource. with host ip address for remote resource
1793 * @param handle - pointer to handle to newly created resource. Set by ocstack.
1794 * Used to refer to resource
1795 * @param resourceTypeName - name of resource type. Example: "core.led"
1796 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
1797 * @param host - HOST address of the remote resource. Example: "coap://xxx.xxx.xxx.xxx:xxxxx"
1798 * @param uri - URI of the resource. Example: "/a/led"
1799 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
1800 * NULL for default entity handler
1801 * @param resourceProperties - properties supported by resource.
1802 * Example: OC_DISCOVERABLE|OC_OBSERVABLE
1805 * OC_STACK_OK - no errors
1806 * OC_STACK_ERROR - stack process error
1809 OCStackResult OCCreateResourceWithHost(OCResourceHandle *handle,
1810 const char *resourceTypeName,
1811 const char *resourceInterfaceName,
1814 OCEntityHandler entityHandler,
1815 uint8_t resourceProperties)
1819 OCStackResult result = OC_STACK_ERROR;
1821 result = OCCreateResource(handle, resourceTypeName, resourceInterfaceName,
1822 uri, entityHandler, resourceProperties);
1824 if (result != OC_STACK_ERROR)
1827 size = strlen(host) + 1;
1828 str = (char *) OCMalloc(size);
1831 return OC_STACK_ERROR;
1833 strncpy(str, host, size);
1834 ((OCResource *) *handle)->host = str;
1841 * Add a resource to a collection resource.
1843 * @param collectionHandle - handle to the collection resource
1844 * @param resourceHandle - handle to resource to be added to the collection resource
1847 * OC_STACK_OK - no errors
1848 * OC_STACK_ERROR - stack process error
1849 * OC_STACK_INVALID_PARAM - invalid collectionhandle
1851 OCStackResult OCBindResource(
1852 OCResourceHandle collectionHandle, OCResourceHandle resourceHandle) {
1853 OCResource *resource;
1856 OC_LOG(INFO, TAG, PCF("Entering OCBindResource"));
1858 // Validate parameters
1859 VERIFY_NON_NULL(collectionHandle, ERROR, OC_STACK_ERROR);
1860 VERIFY_NON_NULL(resourceHandle, ERROR, OC_STACK_ERROR);
1861 // Container cannot contain itself
1862 if (collectionHandle == resourceHandle) {
1863 OC_LOG(ERROR, TAG, PCF("Added handle equals collection handle"));
1864 return OC_STACK_INVALID_PARAM;
1867 // Use the handle to find the resource in the resource linked list
1868 resource = findResource((OCResource *) collectionHandle);
1870 OC_LOG(ERROR, TAG, PCF("Collection handle not found"));
1871 return OC_STACK_INVALID_PARAM;
1874 // Look for an open slot to add add the child resource.
1875 // If found, add it and return success
1876 for (i = 0; i < MAX_CONTAINED_RESOURCES; i++) {
1877 if (!resource->rsrcResources[i]) {
1878 resource->rsrcResources[i] = (OCResource *) resourceHandle;
1879 OC_LOG(INFO, TAG, PCF("resource bound"));
1884 #ifdef WITH_PRESENCE
1885 if(presenceResource.handle)
1887 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
1888 SendPresenceNotification(((OCResource *) resourceHandle)->rsrcType);
1892 // Unable to add resourceHandle, so return error
1893 return OC_STACK_ERROR;
1897 * Remove a resource from a collection resource.
1899 * @param collectionHandle - handle to the collection resource
1900 * @param resourceHandle - handle to resource to be added to the collection resource
1903 * OC_STACK_OK - no errors
1904 * OC_STACK_ERROR - stack process error
1905 * OC_STACK_INVALID_PARAM - invalid collectionHandle
1907 OCStackResult OCUnBindResource(
1908 OCResourceHandle collectionHandle, OCResourceHandle resourceHandle) {
1909 OCResource *resource;
1912 OC_LOG(INFO, TAG, PCF("Entering OCUnBindResource"));
1914 // Validate parameters
1915 VERIFY_NON_NULL(collectionHandle, ERROR, OC_STACK_ERROR);
1916 VERIFY_NON_NULL(resourceHandle, ERROR, OC_STACK_ERROR);
1917 // Container cannot contain itself
1918 if (collectionHandle == resourceHandle) {
1919 OC_LOG(ERROR, TAG, PCF("removing handle equals collection handle"));
1920 return OC_STACK_INVALID_PARAM;
1923 // Use the handle to find the resource in the resource linked list
1924 resource = findResource((OCResource *) collectionHandle);
1926 OC_LOG(ERROR, TAG, PCF("Collection handle not found"));
1927 return OC_STACK_INVALID_PARAM;
1930 // Look for an open slot to add add the child resource.
1931 // If found, add it and return success
1932 for (i = 0; i < MAX_CONTAINED_RESOURCES; i++) {
1933 if (resourceHandle == resource->rsrcResources[i]) {
1934 resource->rsrcResources[i] = (OCResource *) NULL;
1935 OC_LOG(INFO, TAG, PCF("resource unbound"));
1940 OC_LOG(INFO, TAG, PCF("resource not found in collection"));
1942 #ifdef WITH_PRESENCE
1943 if(presenceResource.handle)
1945 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
1946 SendPresenceNotification(((OCResource *) resourceHandle)->rsrcType);
1950 // Unable to add resourceHandle, so return error
1951 return OC_STACK_ERROR;
1954 OCStackResult BindResourceTypeToResource(OCResource* resource,
1955 const char *resourceTypeName)
1957 OCResourceType *pointer = NULL;
1960 OCStackResult result = OC_STACK_ERROR;
1962 OC_LOG(INFO, TAG, PCF("Entering BindResourceTypeToResource"));
1964 // Validate parameters
1965 VERIFY_NON_NULL(resourceTypeName, ERROR, OC_STACK_INVALID_PARAM);
1966 // TODO: Does resource attribute resentation really have to be maintained in stack?
1967 // Is it presented during resource discovery?
1969 TODO ("Make sure that the resourcetypename doesn't already exist in the resource");
1971 // Create the resourcetype and insert it into the resource list
1972 pointer = (OCResourceType *) OCCalloc(1, sizeof(OCResourceType));
1977 // Set the resourceTypeName
1978 size = strlen(resourceTypeName) + 1;
1979 str = (char *) OCMalloc(size);
1983 strncpy(str, resourceTypeName, size);
1984 pointer->resourcetypename = str;
1986 insertResourceType(resource, pointer);
1987 result = OC_STACK_OK;
1989 exit: if (result != OC_STACK_OK) {
1997 OCStackResult BindResourceInterfaceToResource(OCResource* resource,
1998 const char *resourceInterfaceName)
2000 OCResourceInterface *pointer = NULL;
2003 OCStackResult result = OC_STACK_ERROR;
2005 OC_LOG(INFO, TAG, PCF("Entering BindResourceInterfaceToResource"));
2007 // Validate parameters
2008 VERIFY_NON_NULL(resourceInterfaceName, ERROR, OC_STACK_INVALID_PARAM);
2010 TODO ("Make sure that the resourceinterface name doesn't already exist in the resource");
2012 // Create the resourceinterface and insert it into the resource list
2013 pointer = (OCResourceInterface *) OCCalloc(1, sizeof(OCResourceInterface));
2018 // Set the resourceinterface name
2019 size = strlen(resourceInterfaceName) + 1;
2020 str = (char *) OCMalloc(size);
2024 strncpy(str, resourceInterfaceName, size);
2025 pointer->name = str;
2027 // Bind the resourceinterface to the resource
2028 insertResourceInterface(resource, pointer);
2030 result = OC_STACK_OK;
2032 exit: if (result != OC_STACK_OK) {
2041 * Bind a resourcetype to a resource.
2043 * @param handle - handle to the resource
2044 * @param resourceTypeName - name of resource type. Example: "core.led"
2047 * OC_STACK_OK - no errors
2048 * OC_STACK_ERROR - stack process error
2050 OCStackResult OCBindResourceTypeToResource(OCResourceHandle handle,
2051 const char *resourceTypeName) {
2053 OCStackResult result = OC_STACK_ERROR;
2054 OCResource *resource;
2056 // Make sure resource exists
2057 resource = findResource((OCResource *) handle);
2059 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2060 return OC_STACK_ERROR;
2063 // call internal function
2064 result = BindResourceTypeToResource(resource, resourceTypeName);
2066 #ifdef WITH_PRESENCE
2067 if(presenceResource.handle)
2069 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
2070 SendPresenceNotification(resource->rsrcType);
2078 * Bind a resourceinterface to a resource.
2080 * @param handle - handle to the resource
2081 * @param resourceInterfaceName - name of resource interface. Example: "oc.mi.b"
2084 * OC_STACK_OK - no errors
2085 * OC_STACK_ERROR - stack process error
2088 OCStackResult OCBindResourceInterfaceToResource(OCResourceHandle handle,
2089 const char *resourceInterfaceName) {
2091 OCStackResult result = OC_STACK_ERROR;
2092 OCResource *resource;
2094 // Make sure resource exists
2095 resource = findResource((OCResource *) handle);
2097 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2098 return OC_STACK_ERROR;
2101 // call internal function
2102 result = BindResourceInterfaceToResource(resource, resourceInterfaceName);
2104 #ifdef WITH_PRESENCE
2105 if(presenceResource.handle)
2107 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
2108 SendPresenceNotification(resource->rsrcType);
2116 * Get the number of resources that have been created in the stack.
2118 * @param numResources - pointer to count variable
2121 * OC_STACK_OK - no errors
2122 * OC_STACK_ERROR - stack process error
2125 OCStackResult OCGetNumberOfResources(uint8_t *numResources) {
2126 OCResource *pointer = headResource;
2128 OC_LOG(INFO, TAG, PCF("Entering OCGetNumberOfResources"));
2129 VERIFY_NON_NULL(numResources, ERROR, OC_STACK_INVALID_PARAM);
2132 *numResources = *numResources + 1;
2133 pointer = pointer->next;
2139 * Get a resource handle by index.
2141 * @param index - index of resource, 0 to Count - 1
2144 * Resource handle - if found
2145 * NULL - if not found
2147 OCResourceHandle OCGetResourceHandle(uint8_t index) {
2148 OCResource *pointer = headResource;
2151 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceHandle"));
2153 // Iterate through the list
2154 while ((i < index) && pointer) {
2156 pointer = pointer->next;
2158 return (OCResourceHandle) pointer;
2162 * Delete resource specified by handle. Deletes resource and all resourcetype and resourceinterface
2165 * @param handle - handle of resource to be deleted
2168 * OC_STACK_OK - no errors
2169 * OC_STACK_ERROR - stack process error
2170 * OC_STACK_NO_RESOURCE - resource not found
2171 * OC_STACK_INVALID_PARAM - invalid param
2173 OCStackResult OCDeleteResource(OCResourceHandle handle) {
2174 OC_LOG(INFO, TAG, PCF("Entering OCDeleteResource"));
2177 OC_LOG(ERROR, TAG, PCF("Invalid param"));
2178 return OC_STACK_INVALID_PARAM;
2181 OCResource *resource = findResource((OCResource *) handle);
2182 if (resource == NULL) {
2183 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2184 return OC_STACK_NO_RESOURCE;
2187 if (deleteResource((OCResource *) handle) == 0) {
2188 OC_LOG(ERROR, TAG, PCF("Error deleting resource"));
2189 return OC_STACK_ERROR;
2196 * Get the URI of the resource specified by handle.
2198 * @param handle - handle of resource
2200 * URI string - if resource found
2201 * NULL - resource not found
2203 const char *OCGetResourceUri(OCResourceHandle handle) {
2204 OCResource *resource;
2205 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceUri"));
2207 resource = findResource((OCResource *) handle);
2209 return resource->uri;
2211 return (const char *) NULL;
2215 * Get the properties of the resource specified by handle.
2216 * NOTE: that after a resource is created, the OC_ACTIVE property is set
2217 * for the resource by the stack.
2219 * @param handle - handle of resource
2221 * property bitmap - if resource found
2222 * NULL - resource not found
2224 uint8_t OCGetResourceProperties(OCResourceHandle handle) {
2225 OCResource *resource;
2226 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceProperties"));
2228 resource = findResource((OCResource *) handle);
2230 return resource->resourceProperties;
2236 * Get the number of resource types of the resource.
2238 * @param handle - handle of resource
2239 * @param numResourceTypes - pointer to count variable
2242 * OC_STACK_OK - no errors
2243 * OC_STACK_ERROR - stack process error
2245 OCStackResult OCGetNumberOfResourceTypes(OCResourceHandle handle,
2246 uint8_t *numResourceTypes) {
2247 OCResource *resource;
2248 OCResourceType *pointer;
2250 OC_LOG(INFO, TAG, PCF("Entering OCGetNumberOfResourceTypes"));
2251 VERIFY_NON_NULL(numResourceTypes, ERROR, OC_STACK_INVALID_PARAM);
2252 VERIFY_NON_NULL(handle, ERROR, OC_STACK_INVALID_PARAM);
2254 *numResourceTypes = 0;
2256 resource = findResource((OCResource *) handle);
2258 pointer = resource->rsrcType;
2260 *numResourceTypes = *numResourceTypes + 1;
2261 pointer = pointer->next;
2268 * Get name of resource type of the resource.
2270 * @param handle - handle of resource
2271 * @param index - index of resource, 0 to Count - 1
2274 * resource type name - if resource found
2275 * NULL - resource not found
2277 const char *OCGetResourceTypeName(OCResourceHandle handle, uint8_t index) {
2278 OCResourceType *resourceType;
2280 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceTypeName"));
2282 resourceType = findResourceTypeAtIndex(handle, index);
2284 return resourceType->resourcetypename;
2286 return (const char *) NULL;
2292 * Get the number of resource interfaces of the resource.
2294 * @param handle - handle of resource
2295 * @param numResources - pointer to count variable
2298 * OC_STACK_OK - no errors
2299 * OC_STACK_ERROR - stack process error
2301 OCStackResult OCGetNumberOfResourceInterfaces(OCResourceHandle handle,
2302 uint8_t *numResourceInterfaces) {
2303 OCResourceInterface *pointer;
2304 OCResource *resource;
2306 OC_LOG(INFO, TAG, PCF("Entering OCGetNumberOfResourceInterfaces"));
2308 VERIFY_NON_NULL(handle, ERROR, OC_STACK_INVALID_PARAM);
2309 VERIFY_NON_NULL(numResourceInterfaces, ERROR, OC_STACK_INVALID_PARAM);
2311 *numResourceInterfaces = 0;
2312 resource = findResource((OCResource *) handle);
2314 pointer = resource->rsrcInterface;
2316 *numResourceInterfaces = *numResourceInterfaces + 1;
2317 pointer = pointer->next;
2324 * Get name of resource interface of the resource.
2326 * @param handle - handle of resource
2327 * @param index - index of resource, 0 to Count - 1
2330 * resource interface name - if resource found
2331 * NULL - resource not found
2333 const char *OCGetResourceInterfaceName(OCResourceHandle handle, uint8_t index) {
2334 OCResourceInterface *resourceInterface;
2336 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceInterfaceName"));
2338 resourceInterface = findResourceInterfaceAtIndex(handle, index);
2339 if (resourceInterface) {
2340 return resourceInterface->name;
2342 return (const char *) NULL;
2346 * Get resource handle from the collection resource by index.
2348 * @param collectionHandle - handle of collection resource
2349 * @param index - index of contained resource, 0 to Count - 1
2352 * handle to resource - if resource found
2353 * NULL - resource not found
2355 OCResourceHandle OCGetResourceHandleFromCollection(OCResourceHandle collectionHandle,
2357 OCResource *resource;
2359 OC_LOG(INFO, TAG, PCF("Entering OCGetContainedResource"));
2361 if (index >= MAX_CONTAINED_RESOURCES) {
2365 resource = findResource((OCResource *) collectionHandle);
2370 return resource->rsrcResources[index];
2374 * Bind an entity handler to the resource.
2376 * @param handle - handle to the resource that the contained resource is to be bound
2377 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
2379 * OC_STACK_OK - no errors
2380 * OC_STACK_ERROR - stack process error
2382 OCStackResult OCBindResourceHandler(OCResourceHandle handle,
2383 OCEntityHandler entityHandler) {
2384 OCResource *resource;
2386 OC_LOG(INFO, TAG, PCF("Entering OCBindResourceHandler"));
2388 // Validate parameters
2389 VERIFY_NON_NULL(handle, ERROR, OC_STACK_INVALID_PARAM);
2390 //VERIFY_NON_NULL(entityHandler, ERROR, OC_STACK_INVALID_PARAM);
2392 // Use the handle to find the resource in the resource linked list
2393 resource = findResource((OCResource *)handle);
2395 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2396 return OC_STACK_ERROR;
2400 resource->entityHandler = entityHandler;
2402 #ifdef WITH_PRESENCE
2403 if(presenceResource.handle)
2405 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
2406 SendPresenceNotification(resource->rsrcType);
2414 * Get the entity handler for a resource.
2416 * @param handle - handle of resource
2419 * entity handler - if resource found
2420 * NULL - resource not found
2422 OCEntityHandler OCGetResourceHandler(OCResourceHandle handle) {
2423 OCResource *resource;
2425 OC_LOG(INFO, TAG, PCF("Entering OCGetResourceHandler"));
2427 // Use the handle to find the resource in the resource linked list
2428 resource = findResource((OCResource *)handle);
2430 OC_LOG(ERROR, TAG, PCF("Resource not found"));
2435 return resource->entityHandler;
2438 void incrementSequenceNumber(OCResource * resPtr)
2440 // Increment the sequence number
2441 resPtr->sequenceNum += 1;
2442 if (resPtr->sequenceNum == MAX_SEQUENCE_NUMBER)
2444 resPtr->sequenceNum = OC_OFFSET_SEQUENCE_NUMBER+1;
2450 * Notify Presence subscribers that a resource has been modified
2452 * @param resourceType - Handle to the resourceType linked list of resource
2453 * that was modified.
2454 * @param qos - Quality Of Service
2457 #ifdef WITH_PRESENCE
2458 OCStackResult SendPresenceNotification(OCResourceType *resourceType)
2460 OCResource *resPtr = NULL;
2461 OCStackResult result;
2462 OCMethod method = OC_REST_PRESENCE;
2463 uint32_t maxAge = 0;
2464 resPtr = findResource((OCResource *) presenceResource.handle);
2467 return OC_STACK_NO_RESOURCE;
2469 if((((OCResource *) presenceResource.handle)->resourceProperties) & OC_ACTIVE)
2471 maxAge = presenceResource.presenceTTL;
2478 result = SendAllObserverNotification(method, resPtr, maxAge, resourceType, OC_LOW_QOS);
2481 #endif // WITH_PRESENCE
2483 * Notify observers that an observed value has changed.
2485 * @param handle - handle of resource
2488 * OC_STACK_OK - no errors
2489 * OC_STACK_NO_RESOURCE - invalid resource handle
2490 * OC_STACK_NO_OBSERVERS - no more observers intrested in resource
2492 OCStackResult OCNotifyAllObservers(OCResourceHandle handle, OCQualityOfService qos) {
2494 OC_LOG(INFO, TAG, PCF("Entering OCNotifyAllObservers"));
2496 OCResource *resPtr = NULL;
2497 OCStackResult result;
2498 OCMethod method = OC_REST_NOMETHOD;
2499 uint32_t maxAge = 0;
2501 OC_LOG(INFO, TAG, PCF("Entering OCNotifyAllObservers"));
2502 #ifdef WITH_PRESENCE
2503 if(handle == presenceResource.handle)
2507 #endif // WITH_PRESENCE
2508 VERIFY_NON_NULL(handle, ERROR, OC_STACK_ERROR);
2510 // Verify that the resource exists
2511 resPtr = findResource ((OCResource *) handle);
2514 return OC_STACK_NO_RESOURCE;
2518 //only increment in the case of regular observing (not presence)
2519 incrementSequenceNumber(resPtr);
2520 method = OC_REST_OBSERVE;
2521 maxAge = MAX_OBSERVE_AGE;
2522 #ifdef WITH_PRESENCE
2523 result = SendAllObserverNotification (method, resPtr, maxAge, NULL, qos);
2525 result = SendAllObserverNotification (method, resPtr, maxAge, qos);
2532 OCNotifyListOfObservers (OCResourceHandle handle,
2533 OCObservationId *obsIdList,
2534 uint8_t numberOfIds,
2535 unsigned char *notificationJSONPayload,
2536 OCQualityOfService qos)
2538 OC_LOG(INFO, TAG, PCF("Entering OCNotifyListOfObservers"));
2540 OCResource *resPtr = NULL;
2541 //TODO: we should allow the server to define this
2542 uint32_t maxAge = MAX_OBSERVE_AGE;
2544 VERIFY_NON_NULL(handle, ERROR, OC_STACK_ERROR);
2545 VERIFY_NON_NULL(obsIdList, ERROR, OC_STACK_ERROR);
2546 VERIFY_NON_NULL(notificationJSONPayload, ERROR, OC_STACK_ERROR);
2548 // Verify that the resource exists
2549 resPtr = findResource ((OCResource *) handle);
2550 if (NULL == resPtr || myStackMode == OC_CLIENT)
2552 return OC_STACK_NO_RESOURCE;
2556 incrementSequenceNumber(resPtr);
2558 return (SendListObserverNotification(resPtr, obsIdList, numberOfIds,
2559 notificationJSONPayload, maxAge, qos));
2563 * Send a response to a request.
2564 * The response can be a regular, slow, or block (i.e. a response that
2565 * is too large to be sent in a single PDU and must span multiple transmissions)
2567 * @param response - pointer to structure that contains response parameters
2570 * OC_STACK_OK - No errors; Success
2571 * OC_STACK_INVALID_PARAM - Invalid pointer to OCServerResponse
2572 * OC_STACK_INVALID_REQUEST_HANDLE - Request handle not found
2573 * OC_STACK_PERSISTENT_BUFFER_REQUIRED - Block transfer needed for response, so a
2574 * persistent response buffer is necessary
2576 OCStackResult OCDoResponse(OCEntityHandlerResponse *ehResponse)
2578 OCStackResult result = OC_STACK_ERROR;
2579 OCServerRequest *serverRequest = NULL;
2581 OC_LOG(INFO, TAG, PCF("Entering OCDoResponse"));
2583 // Validate input parameters
2584 VERIFY_NON_NULL(ehResponse, ERROR, OC_STACK_INVALID_PARAM);
2585 VERIFY_NON_NULL(ehResponse->requestHandle, ERROR, OC_STACK_INVALID_PARAM);
2587 // TODO: Placeholder for creating a response entry when implementing
2588 // block transfer feature
2590 // If a response payload is present, check if block transfer is required
2591 if (ehResponse->payload && OCIsPacketTransferRequired(NULL,
2592 (const char *)ehResponse->payload, ehResponse->payloadSize))
2594 OC_LOG(INFO, TAG, PCF("Block transfer required"));
2596 // Persistent response buffer is needed for block transfer
2597 if (!ehResponse->persistentBufferFlag)
2599 OC_LOG(WARNING, TAG, PCF("Persistent response buffer required"));
2600 return OC_STACK_PERSISTENT_BUFFER_REQUIRED;
2602 // TODO: Placeholder for block transfer handling
2603 // TODO: Placeholder for setting the the response handle in the OCServerResponse struct
2604 // when implementing the block transfer feature
2610 // Get pointer to request info
2611 serverRequest = GetServerRequestUsingHandle((OCServerRequest *)ehResponse->requestHandle);
2614 result = serverRequest->ehResponseHandler(ehResponse);
2621 * Cancel a response. Applies to a block response
2623 * @param responseHandle - response handle set by stack in OCServerResponse after
2624 * OCDoResponse is called
2627 * OC_STACK_OK - No errors; Success
2628 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
2630 OCStackResult OCCancelResponse(OCResponseHandle responseHandle)
2632 OCStackResult result = OC_STACK_NOTIMPL;
2634 OC_LOG(INFO, TAG, PCF("Entering OCCancelResponse"));
2636 // TODO: validate response handle
2641 //-----------------------------------------------------------------------------
2642 // Private internal function definitions
2643 //-----------------------------------------------------------------------------
2645 * Generate handle of OCDoResource invocation for callback management.
2647 static OCDoHandle GenerateInvocationHandle()
2649 OCDoHandle handle = NULL;
2650 // Generate token here, it will be deleted when the transaction is deleted
2651 handle = (OCDoHandle) OCMalloc(sizeof(uint8_t[MAX_TOKEN_LENGTH]));
2654 OCFillRandomMem((uint8_t*)handle, sizeof(uint8_t[MAX_TOKEN_LENGTH]));
2659 #ifdef WITH_PRESENCE
2660 OCStackResult OCChangeResourceProperty(OCResourceProperty * inputProperty,
2661 OCResourceProperty resourceProperties, uint8_t enable)
2663 if (resourceProperties
2664 > (OC_ACTIVE | OC_DISCOVERABLE | OC_OBSERVABLE | OC_SLOW)) {
2665 OC_LOG(ERROR, TAG, PCF("Invalid property"));
2666 return OC_STACK_INVALID_PARAM;
2670 *inputProperty = (OCResourceProperty) (*inputProperty & ~(resourceProperties));
2674 *inputProperty = (OCResourceProperty) (*inputProperty | resourceProperties);
2681 * Initialize resource data structures, variables, etc.
2683 OCStackResult initResources() {
2684 OCStackResult result = OC_STACK_OK;
2685 // Init application resource vars
2686 headResource = NULL;
2687 // Init Virtual Resources
2688 #ifdef WITH_PRESENCE
2689 presenceResource.presenceTTL = OC_DEFAULT_PRESENCE_TTL;
2690 //presenceResource.token = OCGenerateCoAPToken();
2691 result = OCCreateResource(&presenceResource.handle,
2692 OC_RSRVD_RESOURCE_TYPE_PRESENCE,
2697 //make resource inactive
2698 result = OCChangeResourceProperty(
2699 &(((OCResource *) presenceResource.handle)->resourceProperties),
2706 * Add a resource to the end of the linked list of resources.
2708 * @param resource - resource to be added
2710 void insertResource(OCResource *resource) {
2711 OCResource *pointer;
2713 if (!headResource) {
2714 headResource = resource;
2716 pointer = headResource;
2718 while (pointer->next) {
2719 pointer = pointer->next;
2721 pointer->next = resource;
2723 resource->next = NULL;
2727 * Find a resource in the linked list of resources.
2729 * @param resource - resource to be found
2731 * NULL - resource not found
2732 * pointer to resource - pointer to resource that was found in the linked list
2734 OCResource *findResource(OCResource *resource) {
2735 OCResource *pointer = headResource;
2738 if (pointer == resource) {
2741 pointer = pointer->next;
2746 void deleteAllResources()
2748 OCResource *pointer = headResource;
2753 temp = pointer->next;
2754 #ifdef WITH_PRESENCE
2755 if(pointer != (OCResource *) presenceResource.handle)
2757 #endif // WITH_PRESENCE
2758 deleteResource(pointer);
2759 #ifdef WITH_PRESENCE
2761 #endif // WITH_PRESENCE
2765 #ifdef WITH_PRESENCE
2766 // Ensure that the last resource to be deleted is the presence resource. This allows for all
2767 // presence notification attributed to their deletion to be processed.
2768 deleteResource((OCResource *) presenceResource.handle);
2769 #endif // WITH_PRESENCE
2773 * Delete the resource from the linked list.
2775 * @param resource - resource to be deleted
2780 int deleteResource(OCResource *resource) {
2781 OCResource *prev = NULL;
2784 temp = headResource;
2786 if (temp == resource) {
2787 // Invalidate all Resource Properties.
2788 resource->resourceProperties = (OCResourceProperty) 0;
2789 #ifdef WITH_PRESENCE
2790 if(resource != (OCResource *) presenceResource.handle)
2792 #endif // WITH_PRESENCE
2793 OCNotifyAllObservers((OCResourceHandle)resource, OC_HIGH_QOS);
2794 #ifdef WITH_PRESENCE
2797 if(presenceResource.handle)
2799 ((OCResource *)presenceResource.handle)->sequenceNum = OCGetRandom();
2800 if(resource != (OCResource *) presenceResource.handle)
2802 SendPresenceNotification(resource->rsrcType);
2806 SendPresenceNotification(NULL);
2811 if (temp == headResource) {
2812 headResource = temp->next;
2814 prev->next = temp->next;
2817 deleteResourceElements(temp);
2830 * Delete all of the dynamically allocated elements that were created for the resource.
2832 * @param resource - specified resource
2834 void deleteResourceElements(OCResource *resource) {
2840 OCFree(resource->uri);
2842 // Delete resourcetype linked list
2843 deleteResourceType(resource->rsrcType);
2845 // Delete resourceinterface linked list
2846 deleteResourceInterface(resource->rsrcInterface);
2850 * Delete all of the dynamically allocated elements that were created for the resource type.
2852 * @param resourceType - specified resource type
2854 void deleteResourceType(OCResourceType *resourceType) {
2855 OCResourceType *pointer = resourceType;
2856 OCResourceType *next;
2859 next = pointer->next;
2860 OCFree(pointer->resourcetypename);
2867 * Delete all of the dynamically allocated elements that were created for the resource interface.
2869 * @param resourceInterface - specified resource interface
2871 void deleteResourceInterface(OCResourceInterface *resourceInterface) {
2872 OCResourceInterface *pointer = resourceInterface;
2873 OCResourceInterface *next;
2876 next = pointer->next;
2877 OCFree(pointer->name);
2884 * Insert a resource type into a resource's resource type linked list.
2886 * @param resource - resource where resource type is to be inserted
2887 * @param resourceType - resource type to be inserted
2889 void insertResourceType(OCResource *resource, OCResourceType *resourceType) {
2890 OCResourceType *pointer;
2892 if (resource && !resource->rsrcType) {
2893 resource->rsrcType = resourceType;
2897 pointer = resource->rsrcType;
2901 pointer = resourceType;
2903 while (pointer->next) {
2904 pointer = pointer->next;
2906 pointer->next = resourceType;
2908 resourceType->next = NULL;
2912 * Get a resource type at the specified index within a resource.
2914 * @param handle - handle of resource
2915 * @param index - index of resource type
2918 * resourcetype - if found
2921 OCResourceType *findResourceTypeAtIndex(OCResourceHandle handle, uint8_t index) {
2922 OCResource *resource;
2923 OCResourceType *pointer;
2926 // Find the specified resource
2927 resource = findResource((OCResource *) handle);
2932 // Make sure a resource has a resourcetype
2933 if (!resource->rsrcType) {
2937 // Iterate through the list
2938 pointer = resource->rsrcType;
2940 while ((i < index) && pointer) {
2942 pointer = pointer->next;
2948 * Finds a resource type in an OCResourceType link-list.
2950 * @param resourceTypeList - the link-list to be searched through
2951 * @param resourceTypeName - the key to search for
2954 * resourceType that matches the key (ie. resourceTypeName)
2955 * NULL - either an invalid parameter or this function was unable to find the key.
2957 OCResourceType *findResourceType(OCResourceType * resourceTypeList, const char * resourceTypeName)
2959 if(resourceTypeList && resourceTypeName)
2961 OCResourceType * rtPointer = resourceTypeList;
2962 while(resourceTypeName && rtPointer)
2964 if(rtPointer->resourcetypename &&
2965 strcmp(resourceTypeName, (const char *)
2966 (rtPointer->resourcetypename)) == 0)
2970 rtPointer = rtPointer->next;
2977 * Insert a resource interface into a resource's resource interface linked list.
2979 * @param resource - resource where resource interface is to be inserted
2980 * @param resourceInterface - resource interface to be inserted
2982 void insertResourceInterface(OCResource *resource,
2983 OCResourceInterface *resourceInterface) {
2984 OCResourceInterface *pointer;
2986 if (!resource->rsrcInterface) {
2987 resource->rsrcInterface = resourceInterface;
2989 pointer = resource->rsrcInterface;
2990 while (pointer->next) {
2991 pointer = pointer->next;
2993 pointer->next = resourceInterface;
2995 resourceInterface->next = NULL;
2999 * Get a resource interface at the specified index within a resource.
3001 * @param handle - handle of resource
3002 * @param index - index of resource interface
3005 * resourceinterface - if found
3008 OCResourceInterface *findResourceInterfaceAtIndex(OCResourceHandle handle,
3010 OCResource *resource;
3011 OCResourceInterface *pointer;
3014 // Find the specified resource
3015 resource = findResource((OCResource *) handle);
3020 // Make sure a resource has a resourceinterface
3021 if (!resource->rsrcInterface) {
3025 // Iterate through the list
3026 pointer = resource->rsrcInterface;
3028 while ((i < index) && pointer) {
3030 pointer = pointer->next;
3036 * Determine if a request/response must be sent in a block transfer because it is too large to be
3037 * sent in a single PDU. This function can be used for either a request or a response
3039 * @param request - NULL or pointer to request
3040 * @param response - NULL or pointer to response
3041 * @param size - 0 or size of the request/response. If 0, strlen is used for determining
3042 * the length of the request/response
3045 * 0 - packet transfer NOT required (i.e. normal request/response)
3046 * 1 - packet transfer required (i.e. block transfer needed)
3048 uint8_t OCIsPacketTransferRequired(const char *request, const char *response, uint16_t size)
3052 // Determine if we are checking a request or a response
3055 // If size is greater than 0, use it for the request size value, otherwise
3056 // assume request is null terminated and use strlen for size value
3057 if ((size > MAX_REQUEST_LENGTH) || (strlen(request) > MAX_REQUEST_LENGTH))
3064 // If size is greater than 0, use it for the response size value, otherwise
3065 // assume response is null terminated and use strlen for size value
3066 if ((size > MAX_RESPONSE_LENGTH) || (strlen(response) > MAX_RESPONSE_LENGTH))
3075 * Retrieves a resource type based upon a uri string if the uri string contains only just one
3076 * resource attribute (and that has to be of type "rt").
3078 * @remark This API malloc's memory for the resource type and newURI. Do not malloc resourceType
3079 * or newURI before passing in.
3081 * @param uri - Valid URI for "requiredUri" parameter to OCDoResource API.
3082 * @param resourceType - The resource type to be populated; pass by reference.
3083 * @param newURI - Return URI without resourceType appended to the end of it. This is used to
3084 * ensure that the uri parameter is not modified; pass by reference.
3087 * OC_STACK_INVALID_URI - Returns this if the URI is invalid/NULL.
3088 * OC_STACK_INVALID_PARAM - Returns this if the resourceType parameter is invalid/NULL.
3089 * OC_STACK_OK - Success
3091 OCStackResult getResourceType(const char * uri, unsigned char** resourceType, char ** newURI)
3095 return OC_STACK_INVALID_URI;
3097 if(!resourceType || !newURI)
3099 return OC_STACK_INVALID_PARAM;
3101 char * leftToken = NULL;
3102 char * tempURI = (char *) OCMalloc(strlen(uri) + 1);
3107 strcpy(tempURI, uri);
3108 leftToken = strtok((char *)tempURI, "?");
3110 while(leftToken != NULL)
3112 if(strncmp(leftToken, "rt=", 3) == 0)
3114 *resourceType = (unsigned char *) OCMalloc(strlen(leftToken)-3);
3119 strcpy((char *)*resourceType, ((const char *)&leftToken[3]));
3122 leftToken = strtok(NULL, "?");
3130 return OC_STACK_NO_MEMORY;
3133 const ServerID OCGetServerInstanceID(void)
3135 static bool generated = false;
3136 static ServerID sid;
3143 sid = OCGetRandom();
3148 const char* OCGetServerInstanceIDString(void)
3150 // max printed length of a base 10
3151 // uint32 is 10 characters, so 11 includes null.
3152 // This will change as the representation gets switched
3154 static char buffer[11];
3155 int n = sprintf(buffer, "%u", OCGetServerInstanceID());