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#include <config.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>
#include <signal.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netax25/ax25.h>
#include <netrose/rose.h>
#include <netax25/axlib.h>
#include <netax25/axconfig.h>
#include <netax25/daemon.h>
static int logging = FALSE;
static int mail = FALSE;
static int single = FALSE;
static void terminate(int sig)
{
if (logging) {
syslog(LOG_INFO, "terminating on SIGTERM\n");
closelog();
}
exit(0);
}
int main(int argc, char *argv[])
{
struct full_sockaddr_ax25 dest;
struct full_sockaddr_ax25 src;
int s, n, dlen, len, interval = 30;
char *addr, *port, *message, *portcall;
char *srccall = NULL, *destcall = NULL;
while ((n = getopt(argc, argv, "c:d:lmst:v")) != -1) {
switch (n) {
case 'c':
srccall = optarg;
break;
case 'd':
destcall = optarg;
break;
case 'l':
logging = TRUE;
break;
case 'm':
mail = TRUE;
/* falls through */
case 's':
single = TRUE;
break;
case 't':
interval = atoi(optarg);
if (interval < 1) {
fprintf(stderr, "beacon: interval must be greater than on minute\n");
return 1;
}
break;
case 'v':
printf("beacon: %s\n", VERSION);
return 0;
case '?':
case ':':
fprintf(stderr, "usage: beacon [-c <src_call>] [-d <dest_call>] [-l] [-m] [-s] [-t interval] [-v] <port> <message>\n");
return 1;
}
}
signal(SIGTERM, terminate);
if (optind == argc || optind == argc - 1) {
fprintf(stderr, "usage: beacon [-c <src_call>] [-d <dest_call>] [-l] [-m] [-s] [-t interval] [-v] <port> <message>\n");
return 1;
}
port = argv[optind];
message = argv[optind + 1];
if (ax25_config_load_ports() == 0) {
fprintf(stderr, "beacon: no AX.25 ports defined\n");
return 1;
}
if ((portcall = ax25_config_get_addr(port)) == NULL) {
fprintf(stderr, "beacon: invalid AX.25 port setting - %s\n", port);
return 1;
}
addr = NULL;
if (mail)
addr = strdup("MAIL");
else if (destcall != NULL)
addr = strdup(destcall);
else
addr = strdup("IDENT");
if (addr == NULL)
return 1;
if ((dlen = ax25_aton(addr, &dest)) == -1) {
fprintf(stderr, "beacon: unable to convert callsign '%s'\n", addr);
return 1;
}
if (addr != NULL) free(addr); addr = NULL;
if (srccall != NULL && strcmp(srccall, portcall) != 0) {
if ((addr = (char *) malloc(strlen(srccall) + 1 + strlen(portcall) + 1)) == NULL)
return 1;
sprintf(addr, "%s %s", srccall, portcall);
} else {
if ((addr = strdup(portcall)) == NULL)
return 1;
}
if ((len = ax25_aton(addr, &src)) == -1) {
fprintf(stderr, "beacon: unable to convert callsign '%s'\n", addr);
return 1;
}
if (addr != NULL) free(addr); addr = NULL;
if (!single) {
if (!daemon_start(FALSE)) {
fprintf(stderr, "beacon: cannot become a daemon\n");
return 1;
}
}
if (logging) {
openlog("beacon", LOG_PID, LOG_DAEMON);
syslog(LOG_INFO, "starting");
}
for (;;) {
if ((s = socket(AF_AX25, SOCK_DGRAM, 0)) == -1) {
if (logging) {
syslog(LOG_ERR, "socket: %m");
closelog();
}
return 1;
}
if (bind(s, (struct sockaddr *)&src, len) == -1) {
if (logging) {
syslog(LOG_ERR, "bind: %m");
closelog();
}
return 1;
}
if (sendto(s, message, strlen(message), 0, (struct sockaddr *)&dest, dlen) == -1) {
if (logging) {
syslog(LOG_ERR, "sendto: %m");
closelog();
}
return 1;
}
close(s);
if (!single)
sleep(interval * 60);
else
break;
}
return 0;
}
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