static void help(void)
{
- printf("OS fingerprint match v%s options:\n"
- " --genre [!] string Match a OS genre bypassive fingerprinting.\n",
- IPTABLES_VERSION);
+ printf("OS fingerprint match options:\n"
+ "--genre [!] string Match a OS genre by passive fingerprinting.\n"
+ "--smart Use some smart extensions to determine OS (do not use TTL).\n"
+ "--log level Log all(or only first) determined genres even if "
+ "they do not match desired one. "
+ "Level may be 0(all) or 1(only first entry).\n"
+ "--netlink Log through netlink(NETLINK_NFLOG).\n",
+ "--connector Log through kernel connector [in 2.6.12-mm+].\n"
+ );
}
static struct option opts[] = {
- { .name = "genre", .has_arg = 1, .flag = 0, .val = '1' },
+ { .name = "genre", .has_arg = 1, .flag = 0, .val = '1' },
+ { .name = "smart", .has_arg = 0, .flag = 0, .val = '2' },
+ { .name = "log", .has_arg = 1, .flag = 0, .val = '3' },
+ { .name = "netlink", .has_arg = 0, .flag = 0, .val = '4' },
+ { .name = "connector", .has_arg = 0, .flag = 0, .val = '5' },
{ .name = 0 }
};
-
-static void init(struct ipt_entry_match *m, unsigned int *nfcache)
-{
- *nfcache |= NFC_UNKNOWN;
-}
-
-
static void parse_string(const unsigned char *s, struct ipt_osf_info *info)
{
if (strlen(s) < MAXGENRELEN)
switch(c)
{
- case '1':
- if (*flags)
- exit_error(PARAMETER_PROBLEM, "Can't specify multiple strings");
+ case '1': /* --genre */
+ if (*flags & IPT_OSF_GENRE)
+ exit_error(PARAMETER_PROBLEM, "Can't specify multiple genre parameter");
check_inverse(optarg, &invert, &optind, 0);
parse_string(argv[optind-1], info);
if (invert)
info->invert = 1;
info->len=strlen((char *)info->genre);
- *flags = 1;
+ *flags |= IPT_OSF_GENRE;
+ break;
+ case '2': /* --smart */
+ if (*flags & IPT_OSF_SMART)
+ exit_error(PARAMETER_PROBLEM, "Can't specify multiple smart parameter");
+ *flags |= IPT_OSF_SMART;
+ info->flags |= IPT_OSF_SMART;
+ break;
+ case '3': /* --log */
+ if (*flags & IPT_OSF_LOG)
+ exit_error(PARAMETER_PROBLEM, "Can't specify multiple log parameter");
+ *flags |= IPT_OSF_LOG;
+ info->loglevel = atoi(argv[optind-1]);
+ info->flags |= IPT_OSF_LOG;
+ break;
+ case '4': /* --netlink */
+ if (*flags & IPT_OSF_NETLINK)
+ exit_error(PARAMETER_PROBLEM, "Can't specify multiple netlink parameter");
+ *flags |= IPT_OSF_NETLINK;
+ info->flags |= IPT_OSF_NETLINK;
+ break;
+ case '5': /* --connector */
+ if (*flags & IPT_OSF_CONNECTOR)
+ exit_error(PARAMETER_PROBLEM, "Can't specify multiple connector parameter");
+ *flags |= IPT_OSF_CONNECTOR;
+ info->flags |= IPT_OSF_CONNECTOR;
break;
default:
return 0;
.size = IPT_ALIGN(sizeof(struct ipt_osf_info)),
.userspacesize = IPT_ALIGN(sizeof(struct ipt_osf_info)),
.help = &help,
- .init = &init,
.parse = &parse,
.final_check = &final_check,
.print = &print,