From 79ddbf202a06e6f018e087a328c2ca91e65a8463 Mon Sep 17 00:00:00 2001 From: Tim Gardner Date: Wed, 30 Nov 2011 08:16:53 -0700 Subject: libxt_recent: Add support for --reap option Support for the reap option was merged in the kernel as of 2.6.35. Cc: Pablo Neira Ayuso Cc: Jan Engelhardt Signed-off-by: Tim Gardner --- extensions/libxt_recent.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'extensions/libxt_recent.c') diff --git a/extensions/libxt_recent.c b/extensions/libxt_recent.c index 1e1a111f..c7dce4e7 100644 --- a/extensions/libxt_recent.c +++ b/extensions/libxt_recent.c @@ -10,6 +10,7 @@ enum { O_UPDATE, O_REMOVE, O_SECONDS, + O_REAP, O_HITCOUNT, O_RTTL, O_NAME, @@ -19,6 +20,7 @@ enum { F_RCHECK = 1 << O_RCHECK, F_UPDATE = 1 << O_UPDATE, F_REMOVE = 1 << O_REMOVE, + F_SECONDS = 1 << O_SECONDS, F_ANY_OP = F_SET | F_RCHECK | F_UPDATE | F_REMOVE, }; @@ -33,7 +35,9 @@ static const struct xt_option_entry recent_opts[] = { {.name = "remove", .id = O_REMOVE, .type = XTTYPE_NONE, .excl = F_ANY_OP, .flags = XTOPT_INVERT}, {.name = "seconds", .id = O_SECONDS, .type = XTTYPE_UINT32, - .flags = XTOPT_PUT, XTOPT_POINTER(s, seconds)}, + .flags = XTOPT_PUT, XTOPT_POINTER(s, seconds), .min = 1}, + {.name = "reap", .id = O_REAP, .type = XTTYPE_NONE, + .also = F_SECONDS }, {.name = "hitcount", .id = O_HITCOUNT, .type = XTTYPE_UINT32, .flags = XTOPT_PUT, XTOPT_POINTER(s, hit_count)}, {.name = "rttl", .id = O_RTTL, .type = XTTYPE_NONE, @@ -57,6 +61,8 @@ static void recent_help(void) " --seconds seconds For check and update commands above.\n" " Specifies that the match will only occur if source address last seen within\n" " the last 'seconds' seconds.\n" +" --reap Purge entries older then 'seconds'.\n" +" Can only be used in conjunction with the seconds option.\n" " --hitcount hits For check and update commands above.\n" " Specifies that the match will only occur if source address seen hits times.\n" " May be used in conjunction with the seconds option.\n" @@ -117,11 +123,16 @@ static void recent_parse(struct xt_option_call *cb) case O_RDEST: info->side = XT_RECENT_DEST; break; + case O_REAP: + info->check_set |= XT_RECENT_REAP; + break; } } static void recent_check(struct xt_fcheck_call *cb) { + struct xt_recent_mtinfo *info = cb->data; + if (!(cb->xflags & F_ANY_OP)) xtables_error(PARAMETER_PROBLEM, "recent: you must specify one of `--set', `--rcheck' " @@ -146,6 +157,8 @@ static void recent_print(const void *ip, const struct xt_entry_match *match, if (info->check_set & XT_RECENT_REMOVE) printf(" REMOVE"); if(info->seconds) printf(" seconds: %d", info->seconds); + if (info->check_set & XT_RECENT_REAP) + printf(" reap"); if(info->hit_count) printf(" hit_count: %d", info->hit_count); if (info->check_set & XT_RECENT_TTL) printf(" TTL-Match"); @@ -172,6 +185,8 @@ static void recent_save(const void *ip, const struct xt_entry_match *match) if (info->check_set & XT_RECENT_REMOVE) printf(" --remove"); if(info->seconds) printf(" --seconds %d", info->seconds); + if (info->check_set & XT_RECENT_REAP) + printf(" --reap"); if(info->hit_count) printf(" --hitcount %d", info->hit_count); if (info->check_set & XT_RECENT_TTL) printf(" --rttl"); -- cgit v1.2.3