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83 lines
1.9 KiB
83 lines
1.9 KiB
/* |
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* Shared library add-on to iptables to add quota support |
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* |
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* Sam Johnston <samj@samj.net> |
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*/ |
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#include <stdio.h> |
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#include <xtables.h> |
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#include <linux/netfilter/xt_quota.h> |
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enum { |
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O_QUOTA = 0, |
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}; |
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static const struct xt_option_entry quota_opts[] = { |
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{.name = "quota", .id = O_QUOTA, .type = XTTYPE_UINT64, |
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.flags = XTOPT_MAND | XTOPT_INVERT | XTOPT_PUT, |
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XTOPT_POINTER(struct xt_quota_info, quota)}, |
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XTOPT_TABLEEND, |
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}; |
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static void quota_help(void) |
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{ |
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printf("quota match options:\n" |
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"[!] --quota quota quota (bytes)\n"); |
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} |
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static void |
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quota_print(const void *ip, const struct xt_entry_match *match, int numeric) |
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{ |
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const struct xt_quota_info *q = (const void *)match->data; |
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printf(" quota: %llu bytes", (unsigned long long)q->quota); |
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} |
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static void |
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quota_save(const void *ip, const struct xt_entry_match *match) |
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{ |
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const struct xt_quota_info *q = (const void *)match->data; |
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if (q->flags & XT_QUOTA_INVERT) |
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printf(" !"); |
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printf(" --quota %llu", (unsigned long long) q->quota); |
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} |
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static void quota_parse(struct xt_option_call *cb) |
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{ |
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struct xt_quota_info *info = cb->data; |
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xtables_option_parse(cb); |
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if (cb->invert) |
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info->flags |= XT_QUOTA_INVERT; |
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info->quota = cb->val.u64; |
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} |
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static int quota_xlate(struct xt_xlate *xl, |
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const struct xt_xlate_mt_params *params) |
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{ |
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const struct xt_quota_info *q = (void *)params->match->data; |
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xt_xlate_add(xl, "quota %s%llu bytes", |
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q->flags & XT_QUOTA_INVERT ? "over " : "", |
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(unsigned long long) q->quota); |
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return 1; |
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} |
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static struct xtables_match quota_match = { |
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.family = NFPROTO_UNSPEC, |
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.name = "quota", |
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.version = XTABLES_VERSION, |
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.size = XT_ALIGN(sizeof (struct xt_quota_info)), |
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.userspacesize = offsetof(struct xt_quota_info, master), |
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.help = quota_help, |
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.print = quota_print, |
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.save = quota_save, |
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.x6_parse = quota_parse, |
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.x6_options = quota_opts, |
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.xlate = quota_xlate, |
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}; |
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void |
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_init(void) |
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{ |
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xtables_register_match("a_match); |
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}
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