/* * cmd_args.c = command-line argument processing */ #ifdef HAVE_CONFIG_H # include #endif #include "ntpd.h" #include "ntp_stdlib.h" #include "ntp_cmdargs.h" /* * Definitions of things either imported from or exported to outside */ extern char const *progname; int listen_to_virtual_ips = 0; static const char *ntp_options = "aAbc:dD:f:gk:l:LmnN:p:P:qr:s:t:v:V:x"; #ifdef HAVE_NETINFO extern int check_netinfo; #endif /* * getstartup - search through the options looking for a debugging flag */ void getstartup( int argc, char *argv[] ) { int errflg; extern int priority_done; int c; #ifdef DEBUG debug = 0; /* no debugging by default */ #endif /* * This is a big hack. We don't really want to read command line * configuration until everything else is initialized, since * the ability to configure the system may depend on storage * and the like having been initialized. Except that we also * don't want to initialize anything until after detaching from * the terminal, but we won't know to do that until we've * parsed the command line. Do that now, crudely, and do it * again later. Our ntp_getopt() is explicitly reusable, by the * way. Your own mileage may vary. * * This hack is even called twice (to allow complete logging to file) */ errflg = 0; progname = argv[0]; /* * Decode argument list */ while ((c = ntp_getopt(argc, argv, ntp_options)) != EOF) switch (c) { #ifdef DEBUG case 'd': ++debug; break; case 'D': debug = (int)atol(ntp_optarg); printf("Debug1: %s -> %x = %d\n", ntp_optarg, debug, debug); break; #else case 'd': case 'D': msyslog(LOG_ERR, "ntpd not compiled with -DDEBUG option - no DEBUG support"); fprintf(stderr, "ntpd not compiled with -DDEBUG option - no DEBUG support"); ++errflg; break; #endif case 'L': listen_to_virtual_ips = 1; break; case 'l': { FILE *new_file; new_file = fopen(ntp_optarg, "a"); if (new_file != NULL) { NLOG(NLOG_SYSINFO) msyslog(LOG_NOTICE, "logging to file %s", ntp_optarg); if (syslog_file != NULL && fileno(syslog_file) != fileno(new_file)) (void)fclose(syslog_file); syslog_file = new_file; syslogit = 0; } else msyslog(LOG_ERR, "Cannot open log file %s", ntp_optarg); } break; case 'n': case 'q': ++nofork; break; case 'N': priority_done = strcmp(ntp_optarg, "high"); break; case '?': ++errflg; break; default: break; } if (errflg || ntp_optind != argc) { (void) fprintf(stderr, "usage: %s [ -abdgmnqx ] [ -c config_file ] [ -e e_delay ]\n", progname); (void) fprintf(stderr, "\t\t[ -f freq_file ] [ -k key_file ] [ -l log_file ]\n"); (void) fprintf(stderr, "\t\t[ -p pid_file ] [ -r broad_delay ] [ -s statdir ]\n"); (void) fprintf(stderr, "\t\t[ -t trust_key ] [ -v sys_var ] [ -V default_sysvar ]\n"); #if defined(HAVE_SCHED_SETSCHEDULER) (void) fprintf(stderr, "\t\t[ -P fixed_process_priority ]\n"); #endif exit(2); } ntp_optind = 0; /* reset ntp_optind to restart ntp_getopt */ #ifdef DEBUG if (debug) { #ifdef HAVE_SETVBUF static char buf[BUFSIZ]; setvbuf(stdout, buf, _IOLBF, BUFSIZ); #else setlinebuf(stdout); #endif } #endif } /* * getCmdOpts - get command line options */ void getCmdOpts( int argc, char *argv[] ) { extern char *config_file; int errflg; int c; /* * Initialize, initialize */ errflg = 0; #ifdef DEBUG debug = 0; #endif /* DEBUG */ progname = argv[0]; /* * Decode argument list */ while ((c = ntp_getopt(argc, argv, ntp_options)) != EOF) { switch (c) { case 'a': proto_config(PROTO_AUTHENTICATE, 1, 0.); break; case 'A': proto_config(PROTO_AUTHENTICATE, 0, 0.); break; case 'b': proto_config(PROTO_BROADCLIENT, 1, 0.); break; case 'c': config_file = ntp_optarg; #ifdef HAVE_NETINFO check_netinfo = 0; #endif break; case 'd': #ifdef DEBUG debug++; #else errflg++; #endif /* DEBUG */ break; case 'D': #ifdef DEBUG debug = (int)atol(ntp_optarg); printf("Debug2: %s -> %x = %d\n", ntp_optarg, debug, debug); #else errflg++; #endif /* DEBUG */ break; case 'f': stats_config(STATS_FREQ_FILE, ntp_optarg); break; case 'g': allow_panic = TRUE; break; case 'k': getauthkeys(ntp_optarg); break; case 'L': /* already done at pre-scan */ case 'l': /* already done at pre-scan */ break; case 'm': proto_config(PROTO_MULTICAST_ADD, htonl(INADDR_NTP), 0.); sys_bclient = 1; break; case 'n': /* already done at pre-scan */ break; case 'N': /* already done at pre-scan */ break; case 'p': stats_config(STATS_PID_FILE, ntp_optarg); break; case 'P': #if defined(HAVE_SCHED_SETSCHEDULER) config_priority = (int)atol(ntp_optarg); config_priority_override = 1; #else errflg++; #endif break; case 'q': mode_ntpdate = TRUE; break; case 'r': do { double tmp; if (sscanf(ntp_optarg, "%lf", &tmp) != 1) { msyslog(LOG_ERR, "command line broadcast delay value %s undecodable", ntp_optarg); } else { proto_config(PROTO_BROADDELAY, 0, tmp); } } while (0); break; case 's': stats_config(STATS_STATSDIR, ntp_optarg); break; case 't': do { u_long tkey; tkey = (int)atol(ntp_optarg); if (tkey <= 0 || tkey > NTP_MAXKEY) { msyslog(LOG_ERR, "command line trusted key %s is invalid", ntp_optarg); } else { authtrust(tkey, 1); } } while (0); break; case 'v': case 'V': set_sys_var(ntp_optarg, strlen(ntp_optarg)+1, RW | ((c == 'V') ? DEF : 0)); break; case 'x': allow_step = FALSE; break; default: errflg++; break; } } if (errflg || ntp_optind != argc) { (void) fprintf(stderr, "usage: %s [ -abdgmnx ] [ -c config_file ] [ -e e_delay ]\n", progname); (void) fprintf(stderr, "\t\t[ -f freq_file ] [ -k key_file ] [ -l log_file ]\n"); (void) fprintf(stderr, "\t\t[ -p pid_file ] [ -r broad_delay ] [ -s statdir ]\n"); (void) fprintf(stderr, "\t\t[ -t trust_key ] [ -v sys_var ] [ -V default_sysvar ]\n"); #if defined(HAVE_SCHED_SETSCHEDULER) (void) fprintf(stderr, "\t\t[ -P fixed_process_priority ]\n"); #endif exit(2); } return; }