/* * 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 #include #include "fifoqueue.h" #include "broevent.h" #ifdef BROCCOLI #include #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); } printf("Successfully connected to Bro.\n"); 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); abort(); }