/* Read the specified configuration file and call the routine to
create the ports. */
int
readconfig(char *filename)
{
FILE *instream;
char inbuf[MAX_LINE_SIZE];
int rv = 0;
lineno = 0;
instream = fopen(filename, "r");
if (instream == NULL) {
syslog(LOG_ERR, "Unable to open config file '%s': %m", filename);
return -1;
}
free_longstrs();
free_tracefiles();
config_num++;
while (fgets(inbuf, MAX_LINE_SIZE, instream) != NULL) {
int len = strlen(inbuf);
if (inbuf[len-1] != '\n') {
lineno++;
syslog(LOG_ERR, "line %d is too long in config file", lineno);
continue;
}
/* Remove the '\n' */
inbuf[len-1] = '\0';
handle_config_line(inbuf);
}
/* Delete anything that wasn't in the new config file. */
clear_old_port_config(config_num);
fclose(instream);
return rv;
}
int
main(int argc, char *argv[])
{
int i;
int err;
err = sel_alloc_selector(&ser2net_sel);
if (err) {
fprintf(stderr,
"Could not initialize ser2net selector: '%s'\n",
strerror(err));
return -1;
}
for (i=1; i<argc; i++) {
if ((argv[i][0] != '-') || (strlen(argv[i]) != 2)) {
fprintf(stderr, "Invalid argument: '%s'\n", argv[i]);
arg_error(argv[0]);
}
switch (argv[i][1]) {
case 'n':
detach = 0;
break;
case 'd':
detach = 0;
debug = 1;
break;
case 'b':
cisco_ios_baud_rates = 1;
break;
case 'C':
/* Get a config line. */
i++;
if (i == argc) {
fprintf(stderr, "No config line specified with -C\n");
arg_error(argv[0]);
}
handle_config_line(argv[i]);
config_file = NULL;
break;
case 'c':
/* Get a config file. */
i++;
if (i == argc) {
fprintf(stderr, "No config file specified with -c\n");
arg_error(argv[0]);
}
config_file = argv[i];
break;
case 'p':
/* Get the control port. */
i++;
if (i == argc) {
fprintf(stderr, "No control port specified with -p\n");
arg_error(argv[0]);
}
config_port = argv[i];
break;
case 'P':
i++;
if (i == argc) {
fprintf(stderr, "No pid file specified with -P\n");
arg_error(argv[0]);
}
pid_file = argv[i];
break;
#ifdef USE_UUCP_LOCKING
case 'u':
uucp_locking_enabled = 0;
break;
#endif
case 'v':
printf("%s version %s\n", argv[0], VERSION);
exit(0);
default:
fprintf(stderr, "Invalid option: '%s'\n", argv[i]);
arg_error(argv[0]);
}
}
setup_sighup();
if (config_port != NULL) {
if (controller_init(config_port) == -1) {
fprintf(stderr, "Invalid control port specified with -p\n");
arg_error(argv[0]);
}
}
if (debug && !detach)
openlog("ser2net", LOG_PID | LOG_CONS | LOG_PERROR, LOG_DAEMON);
if (config_file) {
if (readconfig(config_file) == -1) {
return 1;
}
}
if (detach) {
int pid;
/* Detach from the calling terminal. */
openlog("ser2net", LOG_PID | LOG_CONS, LOG_DAEMON);
syslog(LOG_NOTICE, "ser2net startup");
if ((pid = fork()) > 0) {
exit(0);
} else if (pid < 0) {
syslog(LOG_ERR, "Error forking first fork");
exit(1);
} else {
/* setsid() is necessary if we really want to demonize */
setsid();
/* Second fork to really deamonize me. */
if ((pid = fork()) > 0) {
exit(0);
} else if (pid < 0) {
syslog(LOG_ERR, "Error forking second fork");
exit(1);
}
}
/* Close all my standard I/O. */
chdir("/");
close(0);
close(1);
close(2);
}
/* write pid file */
make_pidfile(pid_file);
/* Ignore SIGPIPEs so they don't kill us. */
signal(SIGPIPE, SIG_IGN);
set_sighup_handler(reread_config);
sel_select_loop(ser2net_sel);
return 0;
}
