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/*
* Copyright 2017 Robert Gustafsson
* Copyright 2017 Robin Krahl
* Copyright 2017 Andreas Lindhé
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <unistd.h>
#include "fifoqueue.h"
#include "broevent.h"
#ifdef BROCCOLI
#include <broccoli.h>
#endif
char *host_default = "127.0.0.1";
char *port_default = "47760";
Fifo_q * q;
static void
modbus_register_received(BroConn *conn, void *data, BroRecord *record)
{
int type = BRO_TYPE_COUNT;
uint64 *address = NULL;
uint64 *value = NULL;
// TODO: handle regtype
address = bro_record_get_named_val(record, "address", &type);
if (!address) {
// TODO: handle error
return;
}
value = bro_record_get_named_val(record, "register", &type);
if (!value) {
// TODO: handle error
return;
}
#ifdef DEBUG
printf("Received value %"PRIu64" from uid=%"PRIu64"\n",*value,*address);
#endif
add_to_queue(q, create_sensor_object(*value, *address));
#ifdef DEBUG
printf("Added to queue.\n");
#endif
}
void *
bro_event_listener(void * args)
{
q = (Fifo_q *) args;
int fd = -1;
BroConn *bc = NULL;
bro_init(NULL);
char hostname[512];
snprintf(hostname, 512, "%s:%s", host_default, port_default);
if (! (bc = bro_conn_new_str(hostname, BRO_CFLAG_RECONNECT | BRO_CFLAG_ALWAYS_QUEUE)))
{
printf("Could not get Bro connection handle.\n");
exit(-1);
}
bro_debug_calltrace = 0;
bro_debug_messages = 0;
bro_event_registry_add(bc, "modbus_register_received",
(BroEventFunc) modbus_register_received, NULL);
while (! bro_conn_connect(bc))
{
printf("Could not connect to Bro at %s:%s. Retrying in one second.\n",
host_default, port_default);
sleep(1);
}
fd =bro_conn_get_fd(bc);
fd_set rfds;
setbuf(stdout,NULL);
while(true)
{
FD_ZERO(&rfds);
FD_SET(fd,&rfds);
if(select(fd+1,&rfds,NULL,NULL,NULL) == -1){
printf("select(): Bad file descriptor");
break;
}
bro_conn_process_input(bc);
}
bro_conn_delete(bc);
}
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