coap_pdu_t *CAGeneratePDU(uint32_t code, const CAInfo_t *info, const CAEndpoint_t *endpoint)
{
OIC_LOG(DEBUG, TAG, "IN");
VERIFY_NON_NULL_RET(info, TAG, "info", NULL);
VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint", NULL);
coap_pdu_t *pdu = NULL;
// RESET have to use only 4byte (empty message)
// and ACKNOWLEDGE can use empty message when code is empty.
if (CA_MSG_RESET == info->type || (CA_EMPTY == code && CA_MSG_ACKNOWLEDGE == info->type))
{
OIC_LOG(DEBUG, TAG, "code is empty");
if (!(pdu = CAGeneratePDUImpl((code_t) code, info, endpoint, NULL)))
{
OIC_LOG(ERROR, TAG, "pdu NULL");
return NULL;
}
}
else
{
coap_list_t *optlist = NULL;
if (CA_MSG_ACKNOWLEDGE != info->type && info->resourceUri)
{
uint32_t length = strlen(info->resourceUri);
if (CA_MAX_URI_LENGTH < length)
{
OIC_LOG(ERROR, TAG, "URI len err");
return NULL;
}
uint32_t uriLength = length + sizeof(COAP_URI_HEADER);
char *coapUri = (char *) OICCalloc(1, uriLength);
if (NULL == coapUri)
{
OIC_LOG(ERROR, TAG, "out of memory");
return NULL;
}
OICStrcat(coapUri, uriLength, COAP_URI_HEADER);
OICStrcat(coapUri, uriLength, info->resourceUri);
// parsing options in URI
CAResult_t res = CAParseURI(coapUri, &optlist);
if (CA_STATUS_OK != res)
{
if (optlist)
{
coap_delete_list(optlist);
}
OICFree(coapUri);
return NULL;
}
OICFree(coapUri);
}
// parsing options in HeadOption
CAResult_t ret = CAParseHeadOption(code, info, &optlist);
if (CA_STATUS_OK != ret)
{
coap_delete_list(optlist);
return NULL;
}
pdu = CAGeneratePDUImpl((code_t) code, info, endpoint, optlist);
if (NULL == pdu)
{
OIC_LOG(ERROR, TAG, "pdu NULL");
coap_delete_list(optlist);
return NULL;
}
// free option list
coap_delete_list(optlist);
}
// pdu print method : coap_show_pdu(pdu);
OIC_LOG(DEBUG, TAG, "OUT");
return pdu;
}
coap_pdu_t *CAGeneratePDU(uint32_t code, const CAInfo_t *info, const CAEndpoint_t *endpoint,
coap_list_t **optlist, coap_transport_t *transport)
{
VERIFY_NON_NULL_RET(info, TAG, "info", NULL);
VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint", NULL);
VERIFY_NON_NULL_RET(optlist, TAG, "optlist", NULL);
OIC_LOG_V(DEBUG, TAG, "generate pdu for [%d]adapter, [%d]flags",
endpoint->adapter, endpoint->flags);
coap_pdu_t *pdu = NULL;
// RESET have to use only 4byte (empty message)
// and ACKNOWLEDGE can use empty message when code is empty.
if (CA_MSG_RESET == info->type || (CA_EMPTY == code && CA_MSG_ACKNOWLEDGE == info->type))
{
if (CA_EMPTY != code)
{
OIC_LOG(ERROR, TAG, "reset is not empty message");
return NULL;
}
if (info->payloadSize > 0 || info->payload || info->token || info->tokenLength > 0)
{
OIC_LOG(ERROR, TAG, "Empty message has unnecessary data after messageID");
return NULL;
}
OIC_LOG(DEBUG, TAG, "code is empty");
if (!(pdu = CAGeneratePDUImpl((code_t) code, info, endpoint, NULL, transport)))
{
OIC_LOG(ERROR, TAG, "pdu NULL");
return NULL;
}
}
else
{
if (info->resourceUri)
{
OIC_LOG_V(DEBUG, TAG, "uri : %s", info->resourceUri);
uint32_t length = strlen(info->resourceUri);
if (CA_MAX_URI_LENGTH < length)
{
OIC_LOG(ERROR, TAG, "URI len err");
return NULL;
}
uint32_t uriLength = length + sizeof(COAP_URI_HEADER);
char *coapUri = (char *) OICCalloc(1, uriLength);
if (NULL == coapUri)
{
OIC_LOG(ERROR, TAG, "out of memory");
return NULL;
}
OICStrcat(coapUri, uriLength, COAP_URI_HEADER);
OICStrcat(coapUri, uriLength, info->resourceUri);
// parsing options in URI
CAResult_t res = CAParseURI(coapUri, optlist);
if (CA_STATUS_OK != res)
{
OICFree(coapUri);
return NULL;
}
OICFree(coapUri);
}
// parsing options in HeadOption
CAResult_t ret = CAParseHeadOption(code, info, optlist);
if (CA_STATUS_OK != ret)
{
return NULL;
}
pdu = CAGeneratePDUImpl((code_t) code, info, endpoint, *optlist, transport);
if (NULL == pdu)
{
OIC_LOG(ERROR, TAG, "pdu NULL");
return NULL;
}
}
// pdu print method : coap_show_pdu(pdu);
return pdu;
}
