Esempio n. 1
0
/** Handler for Who-Has requests in the virtual routing setup,
 * with broadcast I-Have response.
 * Will respond if the device Object ID matches, and we have
 * the Object or Object Name requested.
 *
 * @ingroup DMDOB
 * @param service_request [in] The received message to be handled.
 * @param service_len [in] Length of the service_request message.
 * @param src [in] The BACNET_ADDRESS of the message's source (ignored).
 */
void handler_who_has_for_routing(
    uint8_t * service_request,
    uint16_t service_len,
    BACNET_ADDRESS * src)
{
    int len = 0;
    BACNET_WHO_HAS_DATA data;
    int32_t dev_instance;
    int cursor = 0;     /* Starting hint */
    int my_list[2] = { 0, -1 }; /* Not really used, so dummy values */
    BACNET_ADDRESS bcast_net;

    (void) src;
    len = whohas_decode_service_request(service_request, service_len, &data);
    if (len > 0) {
        /* Go through all devices, starting with the root gateway Device */
        memset(&bcast_net, 0, sizeof(BACNET_ADDRESS));
        bcast_net.net = BACNET_BROADCAST_NETWORK;       /* That's all we have to set */
        while (Routed_Device_GetNext(&bcast_net, my_list, &cursor)) {
            dev_instance = Device_Object_Instance_Number();
            if ((data.low_limit == -1) || (data.high_limit == -1) ||
                ((dev_instance >= data.low_limit) &&
                    (dev_instance <= data.high_limit)))
                match_name_or_object(&data);
        }
    }
}
Esempio n. 2
0
void handler_who_has(
    uint8_t * service_request,
    uint16_t service_len,
    BACNET_ADDRESS * src)
{
    int len = 0;
    BACNET_WHO_HAS_DATA data;
    bool directed_to_me = false;
    int object_type = 0;
    uint32_t object_instance = 0;
    char *object_name = NULL;
    bool found = false;

    (void) src;
    len = whohas_decode_service_request(service_request, service_len, &data);
    if (len > 0) {
        if ((data.low_limit == -1) || (data.high_limit == -1))
            directed_to_me = true;
        else if ((Device_Object_Instance_Number() >= (uint32_t) data.low_limit)
            && (Device_Object_Instance_Number() <= (uint32_t) data.high_limit))
            directed_to_me = true;
        if (directed_to_me) {
            /* do we have such an object?  If so, send an I-Have.
               note: we should have only 1 of such an object */
            if (data.object_name) {
                /* valid name in my device? */
                object_name = characterstring_value(&data.object.name);
                found =
                    Device_Valid_Object_Name(object_name, &object_type,
                    &object_instance);
                if (found)
                    Send_I_Have(Device_Object_Instance_Number(), object_type,
                        object_instance, object_name);
            } else {
                /* valid object in my device? */
                object_name =
                    Device_Valid_Object_Id(data.object.identifier.type,
                    data.object.identifier.instance);
                if (object_name)
                    Send_I_Have(Device_Object_Instance_Number(),
                        data.object.identifier.type,
                        data.object.identifier.instance, object_name);
            }
        }
    }

    return;
}
Esempio n. 3
0
int whohas_decode_apdu(
    uint8_t * apdu,
    unsigned apdu_len,
    BACNET_WHO_HAS_DATA * data)
{
    int len = 0;

    if (!apdu)
        return -1;
    /* optional checking - most likely was already done prior to this call */
    if (apdu[0] != PDU_TYPE_UNCONFIRMED_SERVICE_REQUEST)
        return -1;
    if (apdu[1] != SERVICE_UNCONFIRMED_WHO_HAS)
        return -1;
    /* optional limits - must be used as a pair */
    if (apdu_len > 2) {
        len = whohas_decode_service_request(&apdu[2], apdu_len - 2, data);
    }

    return len;
}
Esempio n. 4
0
/** Handler for Who-Has requests, with broadcast I-Have response.
 * Will respond if the device Object ID matches, and we have
 * the Object or Object Name requested.
 *
 * @ingroup DMDOB
 * @param service_request [in] The received message to be handled.
 * @param service_len [in] Length of the service_request message.
 * @param src [in] The BACNET_ADDRESS of the message's source.
 */
void handler_who_has(
    uint8_t * service_request,
    uint16_t service_len,
    BACNET_ADDRESS * src)
{
    int len = 0;
    BACNET_WHO_HAS_DATA data;
    bool directed_to_me = false;

    (void) src;
    len = whohas_decode_service_request(service_request, service_len, &data);
    if (len > 0) {
        if ((data.low_limit == -1) || (data.high_limit == -1))
            directed_to_me = true;
        else if ((Device_Object_Instance_Number() >= (uint32_t) data.low_limit)
            && (Device_Object_Instance_Number() <= (uint32_t) data.high_limit))
            directed_to_me = true;
        if (directed_to_me) {
            match_name_or_object(&data);
        }
    }
}