static void parse_args(int ac, char **av)
{
int c;
gl_env.history_size = 0;
gl_env.quiet = 0;
gl_env.last_update_time = 0;
gl_env.line_by_line = 0;
gl_env.interval = 1;
while (1)
{
int option_index = 0;
static struct option long_options[] = {
{"size", 1, 0, 's'},
{"quiet", 0, 0, 'q'},
{"help", 0, 0, 'h'},
{"version", 0, 0, 'v'},
{"line-by-line", 1, 0, 'l'},
{"interval", 1, 0, 'i'},
{0, 0, 0, 0}
};
c = getopt_long(ac, av, "qhvl:s:i:",
long_options, &option_index);
if (c == -1)
break;
switch (c)
{
case 'l':
gl_env.line_by_line = atoi(optarg);
break;
case 'q':
gl_env.quiet = 1;
break;
case 's':
gl_env.history_size = atoi(optarg);
break;
case 'i':
gl_env.interval = atoi(optarg);
break;
case 'v':
version_and_exit();
case 'h':
usage_and_exit(EXIT_SUCCESS);
default:
usage_and_exit(EXIT_FAILURE);
}
}
if (isatty(fileno(stdin)))
usage_and_exit(EXIT_FAILURE);
if (gl_env.history_size == 0)
gl_env.history_size = DEFAULT_HISTORY_SIZE;
}
static void parse_long_option(
const int argc, const char *const argv[], int *i, struct argument_flags *flags)
{
if (!strcmp(argv[*i], "--help")) {
help_and_exit(flags->program_name);
} else if (!strcmp(argv[*i], "--version")) {
version_and_exit();
} else if (!strcmp(argv[*i], "--foreground")) {
flags->daemonize = false;
} else if (!strcmp(argv[*i], "--config")) {
if (++(*i) == argc) {
fprintf(stderr, "You must specify a configuration file.\n");
cleanup(EXIT_ARGUMENTS, true);
}
flags->conf_file = argv[*i];
} else if (!strcmp(argv[*i], "--noconfig")) {
flags->conf_file = NULL;
} else if (!strcmp(argv[*i], "--lax")) {
fprintf(stderr, "Note: --lax has been enabled. Security checks will *not* be performed.\n");
flags->strict = false;
} else if (!strcmp(argv[*i], "--pidfile")) {
if (++(*i) == argc) {
fprintf(stderr, "You must specify a pid file.\n");
cleanup(EXIT_ARGUMENTS, true);
}
flags->pid_file = argv[*i];
} else if (!strcmp(argv[*i], "--quotes")) {
if (++(*i) == argc) {
fprintf(stderr, "You must specify a quotes file.\n");
cleanup(EXIT_ARGUMENTS, true);
}
flags->quotes_file = argv[*i];
} else if (!strcmp(argv[*i], "--journal")) {
if (++(*i) == argc) {
fprintf(stderr, "You must specify a journal file.\n");
cleanup(EXIT_ARGUMENTS, true);
}
flags->journal_file = argv[*i];
} else if (!strcmp(argv[*i], "--ipv4")) {
if (flags->iproto == PROTOCOL_IPv6) {
fprintf(stderr, "Conflicting options passed: -4 and -6.\n");
cleanup(EXIT_ARGUMENTS, true);
}
flags->iproto = PROTOCOL_IPv4;
} else if (!strcmp(argv[*i], "--ipv6")) {
if (flags->iproto == PROTOCOL_IPv4) {
fprintf(stderr, "Conflicting options passed: -4 and -6.\n");
cleanup(EXIT_ARGUMENTS, true);
}
flags->iproto = PROTOCOL_IPv6;
} else if (!strcmp(argv[*i], "--tcp")) {
if (flags->tproto == PROTOCOL_UDP) {
fprintf(stderr, "Conflicting options passed: -t and -u.\n");
cleanup(EXIT_ARGUMENTS, true);
}
flags->tproto = PROTOCOL_TCP;
} else if (!strcmp(argv[*i], "--udp")) {
if (flags->tproto == PROTOCOL_TCP) {
fprintf(stderr, "Conflicting options passed: -t and -u.\n");
cleanup(EXIT_ARGUMENTS, true);
}
flags->tproto = PROTOCOL_UDP;
} else if (!strcmp(argv[*i], "--quiet")) {
close_journal();
} else {
printf("Unrecognized long option: %s.\n", argv[*i]);
usage_and_exit(flags->program_name);
}
}
