/** 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); } } }
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; }
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; }
/** 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); } } }