OCEntityHandlerResult
OCEntityHandlerCb (OCEntityHandlerFlag flag,
OCEntityHandlerRequest *entityHandlerRequest)
{
OC_LOG_V (INFO, TAG, "Inside entity handler - flags: 0x%x", flag);
OCEntityHandlerResult ehResult = OC_EH_OK;
OCEntityHandlerResponse response;
char payload[MAX_RESPONSE_LENGTH] = {0};
// Validate pointer
if (!entityHandlerRequest)
{
OC_LOG (ERROR, TAG, "Invalid request pointer");
return OC_EH_ERROR;
}
// Initialize certain response fields
response.numSendVendorSpecificHeaderOptions = 0;
memset(response.sendVendorSpecificHeaderOptions, 0, sizeof response.sendVendorSpecificHeaderOptions);
memset(response.resourceUri, 0, sizeof response.resourceUri);
if (flag & OC_INIT_FLAG)
{
OC_LOG (INFO, TAG, "Flag includes OC_INIT_FLAG");
}
if (flag & OC_REQUEST_FLAG)
{
OC_LOG (INFO, TAG, "Flag includes OC_REQUEST_FLAG");
if (OC_REST_GET == entityHandlerRequest->method)
{
OC_LOG (INFO, TAG, "Received OC_REST_GET from client");
ehResult = ProcessGetRequest (entityHandlerRequest, payload, sizeof(payload) - 1);
}
else if (OC_REST_PUT == entityHandlerRequest->method)
{
OC_LOG (INFO, TAG, "Received OC_REST_PUT from client");
ehResult = ProcessPutRequest (entityHandlerRequest, payload, sizeof(payload) - 1);
}
else if (OC_REST_POST == entityHandlerRequest->method)
{
OC_LOG (INFO, TAG, "Received OC_REST_POST from client");
ehResult = ProcessPostRequest (entityHandlerRequest, &response, payload, sizeof(payload) - 1);
}
else if (OC_REST_DELETE == entityHandlerRequest->method)
{
OC_LOG (INFO, TAG, "Received OC_REST_DELETE from client");
ehResult = ProcessDeleteRequest (entityHandlerRequest, payload, sizeof(payload) - 1);
}
else
{
OC_LOG_V (INFO, TAG, "Received unsupported method %d from client",
entityHandlerRequest->method);
}
// If the result isn't an error or forbidden, send response
if (!((ehResult == OC_EH_ERROR) || (ehResult == OC_EH_FORBIDDEN)))
{
// Format the response. Note this requires some info about the request
response.requestHandle = entityHandlerRequest->requestHandle;
response.resourceHandle = entityHandlerRequest->resource;
response.ehResult = ehResult;
response.payload = (unsigned char *)payload;
response.payloadSize = strlen(payload);
// Indicate that response is NOT in a persistent buffer
response.persistentBufferFlag = 0;
// Handle vendor specific options
if(entityHandlerRequest->rcvdVendorSpecificHeaderOptions &&
entityHandlerRequest->numRcvdVendorSpecificHeaderOptions)
{
OC_LOG (INFO, TAG, "Received vendor specific options");
uint8_t i = 0;
OCHeaderOption * rcvdOptions = entityHandlerRequest->rcvdVendorSpecificHeaderOptions;
for( i = 0; i < entityHandlerRequest->numRcvdVendorSpecificHeaderOptions; i++)
{
if(((OCHeaderOption)rcvdOptions[i]).protocolID == OC_COAP_ID)
{
OC_LOG_V(INFO, TAG, "Received option with OC_COAP_ID and ID %u with",
((OCHeaderOption)rcvdOptions[i]).optionID );
OC_LOG_BUFFER(INFO, TAG, ((OCHeaderOption)rcvdOptions[i]).optionData,
((OCHeaderOption)rcvdOptions[i]).optionLength);
}
}
OCHeaderOption * sendOptions = response.sendVendorSpecificHeaderOptions;
uint8_t option2[] = {21,22,23,24,25,26,27,28,29,30};
uint8_t option3[] = {31,32,33,34,35,36,37,38,39,40};
sendOptions[0].protocolID = OC_COAP_ID;
sendOptions[0].optionID = 2248;
memcpy(sendOptions[0].optionData, option2, sizeof(option2));
sendOptions[0].optionLength = 10;
sendOptions[1].protocolID = OC_COAP_ID;
sendOptions[1].optionID = 2600;
memcpy(sendOptions[1].optionData, option3, sizeof(option3));
sendOptions[1].optionLength = 10;
response.numSendVendorSpecificHeaderOptions = 2;
}
// Send the response
if (OCDoResponse(&response) != OC_STACK_OK)
{
OC_LOG(ERROR, TAG, "Error sending response");
ehResult = OC_EH_ERROR;
}
}
}
if (flag & OC_OBSERVE_FLAG)
{
OC_LOG(INFO, TAG, "Flag includes OC_OBSERVE_FLAG");
if (OC_OBSERVE_REGISTER == entityHandlerRequest->obsInfo.action)
{
OC_LOG (INFO, TAG, "Received OC_OBSERVE_REGISTER from client");
ProcessObserveRegister (entityHandlerRequest);
}
else if (OC_OBSERVE_DEREGISTER == entityHandlerRequest->obsInfo.action)
{
OC_LOG (INFO, TAG, "Received OC_OBSERVE_DEREGISTER from client");
ProcessObserveDeregister (entityHandlerRequest);
}
}
return ehResult;
}
// This is the entity handler for the registered resource.
// This is invoked by OCStack whenever it recevies a request for this resource.
OCEntityHandlerResult OCEntityHandlerCb(OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest )
{
OCEntityHandlerResult ehRet = OC_EH_OK;
OCEntityHandlerResponse response = {0};
// MAX_RESPONSE_LENGTH for arduino is 256, for demo 64 is enough
char payload[64] = {0};
if(entityHandlerRequest && (flag & OC_REQUEST_FLAG))
{
OC_LOG (INFO, TAG, PCF("Flag includes OC_REQUEST_FLAG"));
if(OC_REST_GET == entityHandlerRequest->method)
{
char *getResp = constructJsonResponse(entityHandlerRequest);
size_t responsePayloadGetLength = strlen(getResp);
if (responsePayloadGetLength < (sizeof(payload) - 1))
{
strncpy(payload, getResp, responsePayloadGetLength);
}
else
{
ehRet = OC_EH_ERROR;
}
free(getResp);
}
else if(OC_REST_PUT == entityHandlerRequest->method)
{
//Do something with the 'put' payload
char *putResp = constructJsonResponse(entityHandlerRequest);
size_t responsePayloadPutLength = strlen(putResp);
if (responsePayloadPutLength < (sizeof(payload) - 1))
{
strncpy((char *)payload, putResp, responsePayloadPutLength);
}
else
{
ehRet = OC_EH_ERROR;
}
free(putResp);
}
if (ehRet == OC_EH_OK)
{
// Format the response. Note this requires some info about the request
response.requestHandle = entityHandlerRequest->requestHandle;
response.resourceHandle = entityHandlerRequest->resource;
response.ehResult = ehRet;
response.payload = (unsigned char *)payload;
response.payloadSize = strlen(payload);
response.numSendVendorSpecificHeaderOptions = 0;
memset(response.sendVendorSpecificHeaderOptions, 0, sizeof response.sendVendorSpecificHeaderOptions);
memset(response.resourceUri, 0, sizeof response.resourceUri);
// Indicate that response is NOT in a persistent buffer
response.persistentBufferFlag = 0;
// Send the response
if (OCDoResponse(&response) != OC_STACK_OK)
{
OC_LOG(ERROR, TAG, "Error sending response");
ehRet = OC_EH_ERROR;
}
}
}
if (entityHandlerRequest && (flag & OC_OBSERVE_FLAG))
{
if (OC_OBSERVE_REGISTER == entityHandlerRequest->obsInfo.action)
{
OC_LOG (INFO, TAG, PCF("Received OC_OBSERVE_REGISTER from client"));
ProcessObserveRegister(entityHandlerRequest);
}
else if (OC_OBSERVE_DEREGISTER == entityHandlerRequest->obsInfo.action)
{
OC_LOG (INFO, TAG, PCF("Received OC_OBSERVE_DEREGISTER from client"));
ProcessObserveDeregister(entityHandlerRequest);
}
}
return ehRet;
}
