From dfd78a8066857c56284a263623a4ffabd1021ce6 Mon Sep 17 00:00:00 2001 From: Yasuyuki KOZAKAI Date: Sat, 4 Aug 2007 08:28:23 +0000 Subject: Add IPv6 support to statistic match --- extensions/libipt_statistic.c | 184 ------------------------------------------ 1 file changed, 184 deletions(-) delete mode 100644 extensions/libipt_statistic.c (limited to 'extensions/libipt_statistic.c') diff --git a/extensions/libipt_statistic.c b/extensions/libipt_statistic.c deleted file mode 100644 index 21122591..00000000 --- a/extensions/libipt_statistic.c +++ /dev/null @@ -1,184 +0,0 @@ -#include -#include -#include -#include -#include -#include - -#include -#include - -static void -help(void) -{ - printf( -"statistic match v%s options:\n" -" --mode mode Match mode (random, nth)\n" -" random mode:\n" -" --probability p Probability\n" -" nth mode:\n" -" --every n Match every nth packet\n" -" --packet p Initial counter value (0 <= p <= n-1, default 0)\n" -"\n", -IPTABLES_VERSION); -} - -static const struct option opts[] = { - { "mode", 1, 0, '1' }, - { "probability", 1, 0, '2' }, - { "every", 1, 0, '3' }, - { "packet", 1, 0, '4' }, - { 0 } -}; - -static struct xt_statistic_info *info; - -static int -parse(int c, char **argv, int invert, unsigned int *flags, - const void *entry, - unsigned int *nfcache, - struct xt_entry_match **match) -{ - double prob; - - info = (void *)(*match)->data; - - if (invert) - info->flags |= XT_STATISTIC_INVERT; - - switch (c) { - case '1': - if (*flags & 0x1) - exit_error(PARAMETER_PROBLEM, "double --mode"); - if (!strcmp(optarg, "random")) - info->mode = XT_STATISTIC_MODE_RANDOM; - else if (!strcmp(optarg, "nth")) - info->mode = XT_STATISTIC_MODE_NTH; - else - exit_error(PARAMETER_PROBLEM, "Bad mode `%s'", optarg); - *flags |= 0x1; - break; - case '2': - if (*flags & 0x2) - exit_error(PARAMETER_PROBLEM, "double --probability"); - prob = atof(optarg); - if (prob < 0 || prob > 1) - exit_error(PARAMETER_PROBLEM, - "--probability must be between 0 and 1"); - info->u.random.probability = 0x80000000 * prob; - *flags |= 0x2; - break; - case '3': - if (*flags & 0x4) - exit_error(PARAMETER_PROBLEM, "double --every"); - if (string_to_number(optarg, 0, 0xFFFFFFFF, - &info->u.nth.every) == -1) - exit_error(PARAMETER_PROBLEM, - "cannot parse --every `%s'", optarg); - if (info->u.nth.every == 0) - exit_error(PARAMETER_PROBLEM, "--every cannot be 0"); - info->u.nth.every--; - *flags |= 0x4; - break; - case '4': - if (*flags & 0x8) - exit_error(PARAMETER_PROBLEM, "double --packet"); - if (string_to_number(optarg, 0, 0xFFFFFFFF, - &info->u.nth.packet) == -1) - exit_error(PARAMETER_PROBLEM, - "cannot parse --packet `%s'", optarg); - *flags |= 0x8; - break; - default: - return 0; - } - return 1; -} - -/* Final check; must have specified --mark. */ -static void -final_check(unsigned int flags) -{ - if (!(flags & 0x1)) - exit_error(PARAMETER_PROBLEM, "no mode specified"); - if ((flags & 0x2) && (flags & (0x4 | 0x8))) - exit_error(PARAMETER_PROBLEM, - "both nth and random parameters given"); - if (flags & 0x2 && info->mode != XT_STATISTIC_MODE_RANDOM) - exit_error(PARAMETER_PROBLEM, - "--probability can only be used in random mode"); - if (flags & 0x4 && info->mode != XT_STATISTIC_MODE_NTH) - exit_error(PARAMETER_PROBLEM, - "--every can only be used in nth mode"); - if (flags & 0x8 && info->mode != XT_STATISTIC_MODE_NTH) - exit_error(PARAMETER_PROBLEM, - "--packet can only be used in nth mode"); - if ((flags & 0x8) && !(flags & 0x4)) - exit_error(PARAMETER_PROBLEM, - "--packet can only be used with --every"); - /* at this point, info->u.nth.every have been decreased. */ - if (!(info->u.nth.packet >= 0 && info->u.nth.packet <= info->u.nth.every)) - exit_error(PARAMETER_PROBLEM, - "the --packet p must be 0 <= p <= n-1"); - - - info->u.nth.count = info->u.nth.every - info->u.nth.packet; -} - -/* Prints out the matchinfo. */ -static void print_match(const struct xt_statistic_info *info, char *prefix) -{ - if (info->flags & XT_STATISTIC_INVERT) - printf("! "); - - switch (info->mode) { - case XT_STATISTIC_MODE_RANDOM: - printf("%smode random %sprobability %f ", prefix, prefix, - 1.0 * info->u.random.probability / 0x80000000); - break; - case XT_STATISTIC_MODE_NTH: - printf("%smode nth %severy %u ", prefix, prefix, - info->u.nth.every + 1); - if (info->u.nth.packet) - printf("%spacket %u ", prefix, info->u.nth.packet); - break; - } -} - -static void -print(const void *ip, - const struct xt_entry_match *match, - int numeric) -{ - struct xt_statistic_info *info = (struct xt_statistic_info *)match->data; - - printf("statistic "); - print_match(info, ""); -} - -/* Saves the union ipt_matchinfo in parsable form to stdout. */ -static void -save(const void *ip, const struct xt_entry_match *match) -{ - struct xt_statistic_info *info = (struct xt_statistic_info *)match->data; - - print_match(info, "--"); -} - -static struct iptables_match statistic = { - .name = "statistic", - .version = IPTABLES_VERSION, - .size = IPT_ALIGN(sizeof(struct xt_statistic_info)), - .userspacesize = offsetof(struct xt_statistic_info, u.nth.count), - .help = help, - .parse = parse, - .final_check = final_check, - .print = print, - .save = save, - .extra_opts = opts -}; - -void _init(void) -{ - register_match(&statistic); -} -- cgit v1.2.3