static void ICACHE_FLASH_ATTR
prv_obsRequestCallback(lwm2m_transaction_t * transacP,
void * message)
{
lwm2m_observation_t * observationP = (lwm2m_observation_t *)transacP->userData;
coap_packet_t * packet = (coap_packet_t *)message;
uint8_t code;
switch (observationP->status)
{
case STATE_DEREG_PENDING:
// Observation was canceled by the user.
observation_remove(((lwm2m_client_t*)transacP->peerP), observationP);
return;
case STATE_REG_PENDING:
observationP->status = STATE_REGISTERED;
break;
default:
break;
}
if (message == NULL)
{
code = COAP_503_SERVICE_UNAVAILABLE;
}
else if (packet->code == COAP_205_CONTENT
&& !IS_OPTION(packet, COAP_OPTION_OBSERVE))
{
code = COAP_405_METHOD_NOT_ALLOWED;
}
else
{
code = packet->code;
}
if (code != COAP_205_CONTENT)
{
observationP->callback(((lwm2m_client_t*)transacP->peerP)->internalID,
&observationP->uri,
code,
LWM2M_CONTENT_TEXT, NULL, 0,
observationP->userData);
observation_remove(((lwm2m_client_t*)transacP->peerP), observationP);
}
else
{
observationP->callback(((lwm2m_client_t*)transacP->peerP)->internalID,
&observationP->uri,
0,
packet->content_type, packet->payload, packet->payload_len,
observationP->userData);
}
}
int ICACHE_FLASH_ATTR
lwm2m_observe_cancel(lwm2m_context_t * contextP,
uint16_t clientID,
lwm2m_uri_t * uriP,
lwm2m_result_callback_t callback,
void * userData)
{
lwm2m_client_t * clientP;
lwm2m_observation_t * observationP;
clientP = (lwm2m_client_t *)lwm2m_list_find((lwm2m_list_t *)contextP->clientList, clientID);
if (clientP == NULL) return COAP_404_NOT_FOUND;
observationP = prv_findObservationByURI(clientP, uriP);
if (observationP == NULL) return COAP_404_NOT_FOUND;
switch (observationP->status)
{
case STATE_REGISTERED:
observation_remove(clientP, observationP);
break;
case STATE_REG_PENDING:
observationP->status = STATE_DEREG_PENDING;
break;
default:
// Should not happen
break;
}
return 0;
}
int lwm2m_observe_cancel(lwm2m_context_t * contextP,
uint16_t clientID,
lwm2m_uri_t * uriP,
lwm2m_result_callback_t callback,
void * userData)
{
lwm2m_client_t * clientP;
lwm2m_observation_t * observationP;
clientP = (lwm2m_client_t *)lwm2m_list_find((lwm2m_list_t *)contextP->clientList, clientID);
if (clientP == NULL) return COAP_404_NOT_FOUND;
observationP = prv_findObservationByURI(clientP, uriP);
if (observationP == NULL) return COAP_404_NOT_FOUND;
observation_remove(clientP, observationP);
return 0;
}
static void prv_obsRequestCallback(lwm2m_transaction_t * transacP,
void * message)
{
lwm2m_observation_t * observationP = (lwm2m_observation_t *)transacP->userData;
coap_packet_t * packet = (coap_packet_t *)message;
uint8_t code;
if (message == NULL)
{
code = COAP_503_SERVICE_UNAVAILABLE;
}
else if (packet->code == COAP_205_CONTENT
&& !IS_OPTION(packet, COAP_OPTION_OBSERVE))
{
code = COAP_405_METHOD_NOT_ALLOWED;
}
else
{
code = packet->code;
}
if (code != COAP_205_CONTENT)
{
observationP->callback(((lwm2m_client_t*)transacP->peerP)->internalID,
&observationP->uri,
code,
NULL, 0,
observationP->userData);
observation_remove(((lwm2m_client_t*)transacP->peerP), observationP);
}
else
{
observationP->clientP->observationList = (lwm2m_observation_t *)LWM2M_LIST_ADD(observationP->clientP->observationList, observationP);
observationP->callback(((lwm2m_client_t*)transacP->peerP)->internalID,
&observationP->uri,
0,
packet->payload, packet->payload_len,
observationP->userData);
}
}
coap_status_t handle_registration_request(lwm2m_context_t * contextP,
lwm2m_uri_t * uriP,
void * fromSessionH,
coap_packet_t * message,
coap_packet_t * response)
{
coap_status_t result;
time_t tv_sec;
tv_sec = lwm2m_gettime();
if (tv_sec < 0) return COAP_500_INTERNAL_SERVER_ERROR;
switch(message->code)
{
case COAP_POST:
{
char * name = NULL;
uint32_t lifetime;
char * msisdn;
char * altPath;
lwm2m_binding_t binding;
lwm2m_client_object_t * objects;
lwm2m_client_t * clientP;
char location[MAX_LOCATION_LENGTH];
if (0 != prv_getParameters(message->uri_query, &name, &lifetime, &msisdn, &binding))
{
return COAP_400_BAD_REQUEST;
}
objects = prv_decodeRegisterPayload(message->payload, message->payload_len, &altPath);
switch (uriP->flag & LWM2M_URI_MASK_ID)
{
case 0:
// Register operation
if (objects == NULL)
{
lwm2m_free(name);
if (msisdn != NULL) lwm2m_free(msisdn);
return COAP_400_BAD_REQUEST;
}
// Endpoint client name is mandatory
if (name == NULL)
{
if (msisdn != NULL) lwm2m_free(msisdn);
return COAP_400_BAD_REQUEST;
}
if (lifetime == 0)
{
lifetime = LWM2M_DEFAULT_LIFETIME;
}
clientP = prv_getClientByName(contextP, name);
if (clientP != NULL)
{
// we reset this registration
lwm2m_free(clientP->name);
if (clientP->msisdn != NULL) lwm2m_free(clientP->msisdn);
if (clientP->altPath != NULL) lwm2m_free(clientP->altPath);
prv_freeClientObjectList(clientP->objectList);
clientP->objectList = NULL;
}
else
{
clientP = (lwm2m_client_t *)lwm2m_malloc(sizeof(lwm2m_client_t));
if (clientP == NULL)
{
lwm2m_free(name);
lwm2m_free(altPath);
if (msisdn != NULL) lwm2m_free(msisdn);
prv_freeClientObjectList(objects);
return COAP_500_INTERNAL_SERVER_ERROR;
}
memset(clientP, 0, sizeof(lwm2m_client_t));
clientP->internalID = lwm2m_list_newId((lwm2m_list_t *)contextP->clientList);
contextP->clientList = (lwm2m_client_t *)LWM2M_LIST_ADD(contextP->clientList, clientP);
}
clientP->name = name;
clientP->binding = binding;
clientP->msisdn = msisdn;
clientP->altPath = altPath;
clientP->lifetime = lifetime;
clientP->endOfLife = tv_sec + lifetime;
clientP->objectList = objects;
clientP->sessionH = fromSessionH;
if (prv_getLocationString(clientP->internalID, location) == 0)
{
prv_freeClient(clientP);
return COAP_500_INTERNAL_SERVER_ERROR;
}
if (coap_set_header_location_path(response, location) == 0)
{
prv_freeClient(clientP);
return COAP_500_INTERNAL_SERVER_ERROR;
}
if (contextP->monitorCallback != NULL)
{
contextP->monitorCallback(clientP->internalID, NULL, CREATED_2_01, NULL, 0, contextP->monitorUserData);
}
result = COAP_201_CREATED;
break;
case LWM2M_URI_FLAG_OBJECT_ID:
clientP = (lwm2m_client_t *)lwm2m_list_find((lwm2m_list_t *)contextP->clientList, uriP->objectId);
if (clientP == NULL) return COAP_404_NOT_FOUND;
// Endpoint client name MUST NOT be present
if (name != NULL)
{
lwm2m_free(name);
if (msisdn != NULL) lwm2m_free(msisdn);
return COAP_400_BAD_REQUEST;
}
if (binding != BINDING_UNKNOWN)
{
clientP->binding = binding;
}
if (msisdn != NULL)
{
if (clientP->msisdn != NULL) lwm2m_free(clientP->msisdn);
clientP->msisdn = msisdn;
}
if (lifetime != 0)
{
clientP->lifetime = lifetime;
}
// client IP address, port or MSISDN may have changed
clientP->sessionH = fromSessionH;
if (objects != NULL)
{
lwm2m_observation_t * observationP;
// remove observations on object/instance no longer existing
observationP = clientP->observationList;
while (observationP != NULL)
{
lwm2m_client_object_t * objP;
lwm2m_observation_t * nextP;
nextP = observationP->next;
objP = (lwm2m_client_object_t *)lwm2m_list_find((lwm2m_list_t *)objects, observationP->uri.objectId);
if (objP == NULL)
{
observationP->callback(clientP->internalID,
&observationP->uri,
COAP_202_DELETED,
NULL, 0,
observationP->userData);
observation_remove(clientP, observationP);
}
else
{
if ((observationP->uri.flag & LWM2M_URI_FLAG_INSTANCE_ID) != 0)
{
if (lwm2m_list_find((lwm2m_list_t *)objP->instanceList, observationP->uri.instanceId) == NULL)
{
observationP->callback(clientP->internalID,
&observationP->uri,
COAP_202_DELETED,
NULL, 0,
observationP->userData);
observation_remove(clientP, observationP);
}
}
}
observationP = nextP;
}
prv_freeClientObjectList(clientP->objectList);
clientP->objectList = objects;
}
clientP->endOfLife = tv_sec + clientP->lifetime;
if (contextP->monitorCallback != NULL)
{
contextP->monitorCallback(clientP->internalID, NULL, COAP_204_CHANGED, NULL, 0, contextP->monitorUserData);
}
result = COAP_204_CHANGED;
break;
default:
return COAP_400_BAD_REQUEST;
}
}
break;
case COAP_DELETE:
{
lwm2m_client_t * clientP;
if ((uriP->flag & LWM2M_URI_MASK_ID) != LWM2M_URI_FLAG_OBJECT_ID) return COAP_400_BAD_REQUEST;
contextP->clientList = (lwm2m_client_t *)LWM2M_LIST_RM(contextP->clientList, uriP->objectId, &clientP);
if (clientP == NULL) return COAP_400_BAD_REQUEST;
if (contextP->monitorCallback != NULL)
{
contextP->monitorCallback(clientP->internalID, NULL, DELETED_2_02, NULL, 0, contextP->monitorUserData);
}
prv_freeClient(clientP);
result = COAP_202_DELETED;
}
break;
default:
return COAP_400_BAD_REQUEST;
}
return result;
}
