Xtables-addons 3.0

Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>

INSTALL

@@ -12,16 +12,17 @@ in combination with the kernel's Kbuild system.
 Supported configurations for this release
 =========================================
 
-	* iptables >= 1.4.5
+	* iptables >= 1.6.0
 
-	* kernel-devel >= 3.7
+	* kernel-devel >= 4.15
 	  with prepared build/output directory
 	  - CONFIG_NF_CONNTRACK
 	  - CONFIG_NF_CONNTRACK_MARK enabled =y or as module (=m)
 	  - CONFIG_CONNECTOR y/m if you wish to receive userspace
 	    notifications from pknock through netlink/connector
 
-(Use xtables-addons-1.x if you need support for Linux < 3.7.)
+(Use xtables-addons-1.x if you need support for Linux < 3.7.
+Use xtables-addons-2.x if you need support for Linux < 4.15.)
 
 
 Selecting extensions

configure.ac

@@ -1,4 +1,4 @@
-AC_INIT([xtables-addons], [2.13])
+AC_INIT([xtables-addons], [3.0])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
@@ -57,12 +57,10 @@ if test -n "$kbuilddir"; then
 		echo "WARNING: Version detection did not succeed. Continue at own luck.";
 	else
 		echo "$kmajor.$kminor.$kmicro.$kstable in $kbuilddir";
-		if test "$kmajor" -gt 4 -o "$kmajor" -eq 4 -a "$kminor" -gt 12; then
+		if test "$kmajor" -gt 4 -o "$kmajor" -eq 4 -a "$kminor" -gt 16; then
 			echo "WARNING: That kernel version is not officially supported yet. Continue at own luck.";
-		elif test "$kmajor" -eq 4 -a "$kminor" -le 10; then
+		elif test "$kmajor" -eq 4 -a "$kminor" -ge 15; then
-			:;
+			:
-		elif test "$kmajor" -eq 3 -a "$kminor" -ge 7; then
-			:;
 		else
 			echo "WARNING: That kernel version is not officially supported.";
 		fi;

doc/changelog.txt

@@ -1,6 +1,18 @@
 
 HEAD
 ====
+Enhancements:
+- support for Linux 4.15, 4.16
+Changes:
+- remove support for Linux 3.7--4.14
+
+
+v2.14 (2017-11-22)
+==================
+Enhancements:
+- support for Linux up to 4.14
+Fixes:
+- xt_DNETMAP: fix some reports from PVSStudio (a static checker)
 
 
 v2.13 (2017-06-29)
@@ -119,5 +131,5 @@ Changes:
 Enhancements:
 - Support for Linux 3.7
 
-If you want to use Xtables-addons with kernels older than 3.7,
+If you want to use Xtables-addons with kernels older than 4.15,
-use the addons 1.x series (maintained but without new features).
+use the addons 2.x series.

extensions/ACCOUNT/xt_ACCOUNT.c

@@ -482,16 +482,7 @@ static void ipt_acc_depth2_insert(struct ipt_acc_mask_8 *mask_8,
 static unsigned int
 ipt_acc_target(struct sk_buff *skb, const struct xt_action_param *par)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 	struct ipt_acc_net *ian = net_generic(par->state->net, ipt_acc_net_id);
-#else
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)
-	struct ipt_acc_net *ian = net_generic(par->net, ipt_acc_net_id);
-#else
-	struct net *net = dev_net(par->in ? par->in : par->out);
-	struct ipt_acc_net *ian = net_generic(net, ipt_acc_net_id);
-#endif
-#endif
 	struct ipt_acc_table *ipt_acc_tables = ian->ipt_acc_tables;
 	const struct ipt_acc_info *info =
 		par->targinfo;

extensions/compat_xtables.h

@@ -8,12 +8,8 @@
 
 #define DEBUGP Use__pr_debug__instead
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
-#	warning Kernels below 3.7 not supported.
+#	warning Kernels below 4.15 not supported.
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 8, 0)
-#	define prandom_u32() random32()
 #endif
 
 #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
@@ -46,51 +42,13 @@
 #	define NIPQUAD_FMT "%hhu.%hhu.%hhu.%hhu"
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 9, 0)
-static inline struct inode *file_inode(struct file *f)
-{
-	return f->f_path.dentry->d_inode;
-}
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
-static inline void proc_set_user(struct proc_dir_entry *de,
-    typeof(de->uid) uid, typeof(de->gid) gid)
-{
-	de->uid = uid;
-	de->gid = gid;
-}
-
-static inline void *PDE_DATA(struct inode *inode)
-{
-	return PDE(inode)->data;
-}
-
-static inline void proc_remove(struct proc_dir_entry *de)
-{
-	if (de != NULL)
-		remove_proc_entry(de->name, de->parent);
-}
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0)
-#	define ip6_local_out(xnet, xsk, xskb) ip6_local_out(xskb)
-#	define ip6_route_me_harder(xnet, xskb) ip6_route_me_harder(xskb)
-#	define ip_local_out(xnet, xsk, xskb) ip_local_out(xskb)
-#	define ip_route_me_harder(xnet, xskb, xaddrtype) ip_route_me_harder((xskb), (xaddrtype))
-#endif
-
 static inline struct net *par_net(const struct xt_action_param *par)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
 	return par->state->net;
-#else
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)
-	return par->net;
-#else
-	return dev_net((par->in != NULL) ? par->in : par->out);
-#endif
-#endif
 }
 
+#ifndef NF_CT_ASSERT
+#	define NF_CT_ASSERT(x)	WARN_ON(!(x))
+#endif
+
 #endif /* _XTABLES_COMPAT_H */

extensions/pknock/xt_pknock.c

@@ -357,11 +357,10 @@ has_logged_during_this_minute(const struct peer *peer)
  *
  * @r: rule
  */
-static void
+static void peer_gc(struct timer_list *tl)
-peer_gc(unsigned long r)
 {
 	unsigned int i;
-	struct xt_pknock_rule *rule = (struct xt_pknock_rule *)r;
+	struct xt_pknock_rule *rule = from_timer(rule, tl, timer);
 	struct peer *peer;
 	struct list_head *pos, *n;
 
@@ -468,11 +467,7 @@ add_rule(struct xt_pknock_mtinfo *info)
 	rule->peer_head      = alloc_hashtable(peer_hashsize);
 	if (rule->peer_head == NULL)
 		goto out;
-
+	timer_setup(&rule->timer, peer_gc, 0);
-	init_timer(&rule->timer);
-	rule->timer.function	= peer_gc;
-	rule->timer.data	= (unsigned long)rule;
-
 	rule->status_proc = proc_create_data(info->rule_name, 0, pde,
 	                    &pknock_proc_ops, rule);
 	if (rule->status_proc == NULL)
@@ -619,8 +614,9 @@ static void add_peer(struct peer *peer, struct xt_pknock_rule *rule)
  */
 static void remove_peer(struct peer *peer)
 {
+	if (peer == NULL)
+		return;
 	list_del(&peer->head);
-	if (peer != NULL)
 	kfree(peer);
 }
 
@@ -698,13 +694,7 @@ msg_to_userspace_nl(const struct xt_pknock_mtinfo *info,
 	scnprintf(msg.rule_name, info->rule_name_len + 1, info->rule_name);
 
 	memcpy(m + 1, &msg, m->len);
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 15, 0)
 	cn_netlink_send(m, 0, multicast_group, GFP_ATOMIC);
-#else
-	cn_netlink_send(m, multicast_group, GFP_ATOMIC);
-#endif
-
 	kfree(m);
 #endif
 	return true;

extensions/xt_CHAOS.c

@@ -58,12 +58,7 @@ xt_chaos_total(struct sk_buff *skb, const struct xt_action_param *par)
 
 	{
 		struct xt_action_param local_par;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 		local_par.state    = par->state;
-#else
-		local_par.in        = par->in,
-		local_par.out       = par->out,
-#endif
 		local_par.match     = xm_tcp;
 		local_par.matchinfo = &tcp_params;
 		local_par.fragoff   = fragoff;
@@ -78,14 +73,7 @@ xt_chaos_total(struct sk_buff *skb, const struct xt_action_param *par)
 	destiny = (info->variant == XTCHAOS_TARPIT) ? xt_tarpit : xt_delude;
 	{
 		struct xt_action_param local_par;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 		local_par.state    = par->state;
-#else
-		local_par.in       = par->in;
-		local_par.out      = par->out;
-		local_par.hooknum  = par->hooknum;
-		local_par.family   = par->family;
-#endif
 		local_par.target   = destiny;
 		local_par.targinfo = par->targinfo;
 		destiny->target(skb, &local_par);
@@ -108,27 +96,15 @@ chaos_tg(struct sk_buff *skb, const struct xt_action_param *par)
 
 	if ((unsigned int)prandom_u32() <= reject_percentage) {
 		struct xt_action_param local_par;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 		local_par.state    = par->state;
-#else
-		local_par.in       = par->in;
-		local_par.out      = par->out;
-		local_par.hooknum  = par->hooknum;
-#endif
 		local_par.target   = xt_reject;
 		local_par.targinfo = &reject_params;
 		return xt_reject->target(skb, &local_par);
 	}
 
 	/* TARPIT/DELUDE may not be called from the OUTPUT chain */
-	if (iph->protocol == IPPROTO_TCP &&
+	if (iph->protocol == IPPROTO_TCP && info->variant != XTCHAOS_NORMAL &&
-	    info->variant != XTCHAOS_NORMAL &&
+	    par->state->hook != NF_INET_LOCAL_OUT)
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
-	    par->state->hook
-#else
-	    par->hooknum
-#endif
-	    != NF_INET_LOCAL_OUT)
 		xt_chaos_total(skb, par);
 
 	return NF_DROP;

extensions/xt_DELUDE.c

@@ -79,7 +79,7 @@ static void delude_send_reset(struct net *net, struct sk_buff *oldskb,
 	tcph->doff   = sizeof(struct tcphdr) / 4;
 
 	/* DELUDE essential part */
-	if (oth->syn && !oth->ack && !oth->rst && !oth->fin) {
+	if (oth->syn && !oth->ack && !oth->fin) {
 		tcph->syn     = true;
 		tcph->seq     = 0;
 		tcph->ack     = true;
@@ -107,13 +107,8 @@ static void delude_send_reset(struct net *net, struct sk_buff *oldskb,
 
 	addr_type = RTN_UNSPEC;
 #ifdef CONFIG_BRIDGE_NETFILTER
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0)
 	if (hook != NF_INET_FORWARD || (nskb->nf_bridge != NULL &&
 	    nskb->nf_bridge->physoutdev))
-#else
-	if (hook != NF_INET_FORWARD || (nskb->nf_bridge != NULL &&
-	    nskb->nf_bridge->mask & BRNF_BRIDGED))
-#endif
 #else
 	if (hook != NF_INET_FORWARD)
 #endif
@@ -151,13 +146,7 @@ delude_tg(struct sk_buff *skb, const struct xt_action_param *par)
 	 * a problem, as that is supported since Linux 2.6.35. But since we do not
 	 * actually want to have a connection open, we are still going to drop it.
 	 */
-	delude_send_reset(par_net(par), skb,
+	delude_send_reset(par_net(par), skb, par->state->hook);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
-	                  par->state->hook
-#else
-	                  par->hooknum
-#endif
-	                  );
 	return NF_DROP;
 }
 

extensions/xt_DNETMAP.c

@@ -356,11 +356,7 @@ out:
 static unsigned int
 dnetmap_tg(struct sk_buff *skb, const struct xt_action_param *par)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 	struct net *net = dev_net(par->state->in ? par->state->in : par->state->out);
-#else
-	struct net *net = dev_net(par->in ? par->in : par->out);
-#endif
 	struct dnetmap_net *dnetmap_net = dnetmap_pernet(net);
 	struct nf_conn *ct;
 	enum ip_conntrack_info ctinfo;
@@ -371,15 +367,7 @@ dnetmap_tg(struct sk_buff *skb, const struct xt_action_param *par)
 	struct dnetmap_entry *e;
 	struct dnetmap_prefix *p;
 	__s32 jttl;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 	unsigned int hooknum = par->state->hook;
-#else
-	unsigned int hooknum = par->hooknum;
-#endif
-
-	NF_CT_ASSERT(hooknum == NF_INET_POST_ROUTING ||
-		     hooknum == NF_INET_LOCAL_OUT ||
-		     hooknum == NF_INET_PRE_ROUTING);
 	ct = nf_ct_get(skb, &ctinfo);
 
 	jttl = tginfo->flags & XT_DNETMAP_TTL ? tginfo->ttl * HZ : jtimeout;
@@ -398,7 +386,7 @@ dnetmap_tg(struct sk_buff *skb, const struct xt_action_param *par)
 		/* if prefix is specified, we check if
 		it matches lookedup entry */
 		if (tginfo->flags & XT_DNETMAP_PREFIX)
-			if (memcmp(mr, &e->prefix, sizeof(*mr)))
+			if (memcmp(mr, &e->prefix->prefix, sizeof(*mr)))
 				goto no_rev_map;
 		/* don't reset ttl if flag is set */
 		if (jttl >= 0 && (! (e->flags & XT_DNETMAP_STATIC) ) ) {
@@ -504,12 +492,7 @@ bind_new_prefix:
 	newrange.max_addr.ip = postnat_ip;
 	newrange.min_proto = mr->min_proto;
 	newrange.max_proto = mr->max_proto;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 	return nf_nat_setup_info(ct, &newrange, HOOK2MANIP(par->state->hook));
-#else
-	return nf_nat_setup_info(ct, &newrange, HOOK2MANIP(par->hooknum));
-#endif
-
 no_rev_map:
 no_free_ip:
 	spin_unlock_bh(&dnetmap_lock);

extensions/xt_ECHO.c

@@ -35,11 +35,7 @@ echo_tg6(struct sk_buff *oldskb, const struct xt_action_param *par)
 	void *payload;
 	struct flowi6 fl;
 	struct dst_entry *dst = NULL;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 	struct net *net = dev_net((par->state->in != NULL) ? par->state->in : par->state->out);
-#else
-	struct net *net = dev_net((par->in != NULL) ? par->in : par->out);
-#endif
 
 	/* This allows us to do the copy operation in fewer lines of code. */
 	if (skb_linearize(oldskb) < 0)

extensions/xt_LOGMARK.c

@@ -64,12 +64,7 @@ static void logmark_ct(const struct nf_conn *ct, enum ip_conntrack_info ctinfo)
 		printk("%s""CONFIRMED", prev ? "," : "");
 		prev = true;
 	}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,9,0)
 	printk(" lifetime=%lus", nf_ct_expires(ct) / HZ);
-#else
-	printk(" lifetime=%lus",
-	       (jiffies - ct->timeout.expires) / HZ);
-#endif
 }
 
 static unsigned int
@@ -82,21 +77,13 @@ logmark_tg(struct sk_buff *skb, const struct xt_action_param *par)
 	printk("<%u>%.*s""iif=%d hook=%s nfmark=0x%x "
 	       "secmark=0x%x classify=0x%x",
 	       info->level, (unsigned int)sizeof(info->prefix), info->prefix,
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 	       skb_ifindex(skb), hook_names[par->state->hook],
-#else
-	       skb_ifindex(skb), hook_names[par->hooknum],
-#endif
 	       skb_nfmark(skb), skb_secmark(skb), skb->priority);
 
 	ct = nf_ct_get(skb, &ctinfo);
 	printk(" ctdir=%s", dir_names[ctinfo >= IP_CT_IS_REPLY]);
 	if (ct == NULL)
 		printk(" ct=NULL ctmark=NULL ctstate=INVALID ctstatus=NONE");
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)
-	else if (nf_ct_is_untracked(ct))
-		printk(" ct=UNTRACKED ctmark=NULL ctstate=UNTRACKED ctstatus=NONE");
-#endif
 	else
 		logmark_ct(ct, ctinfo);
 

extensions/xt_TARPIT.c

@@ -249,13 +249,8 @@ static void tarpit_tcp4(struct net *net, struct sk_buff *oldskb,
 		niph->id = ~oldhdr->id + 1;
 
 #ifdef CONFIG_BRIDGE_NETFILTER
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0)
 	if (hook != NF_INET_FORWARD || (nskb->nf_bridge != NULL &&
 	    nskb->nf_bridge->physoutdev != NULL))
-#else
-	if (hook != NF_INET_FORWARD || (nskb->nf_bridge != NULL &&
-	    nskb->nf_bridge->mask & BRNF_BRIDGED))
-#endif
 #else
 	if (hook != NF_INET_FORWARD)
 #endif
@@ -283,17 +278,8 @@ static void tarpit_tcp4(struct net *net, struct sk_buff *oldskb,
 		goto free_nskb;
 
 	nf_ct_attach(nskb, oldskb);
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)
 	NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, net, nskb->sk, nskb, NULL,
 		skb_dst(nskb)->dev, dst_output);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0)
-	NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, nskb->sk, nskb, NULL,
-		skb_dst(nskb)->dev, dst_output_sk);
-#else
-	NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, nskb, NULL,
-		skb_dst(nskb)->dev, dst_output);
-#endif
 	return;
 
  free_nskb:
@@ -406,17 +392,8 @@ static void tarpit_tcp6(struct net *net, struct sk_buff *oldskb,
 	nskb->ip_summed = CHECKSUM_NONE;
 
 	nf_ct_attach(nskb, oldskb);
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)
 	NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, net, nskb->sk, nskb, NULL,
 	        skb_dst(nskb)->dev, dst_output);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0)
-	NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, nskb->sk, nskb, NULL,
-	        skb_dst(nskb)->dev, dst_output_sk);
-#else
-	NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, nskb, NULL,
-	        skb_dst(nskb)->dev, dst_output);
-#endif
 	return;
 
  free_nskb:
@@ -454,12 +431,7 @@ tarpit_tg4(struct sk_buff *skb, const struct xt_action_param *par)
 	/* We are not interested in fragments */
 	if (iph->frag_off & htons(IP_OFFSET))
 		return NF_DROP;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 	tarpit_tcp4(par_net(par), skb, par->state->hook, info->variant);
-#else
-	tarpit_tcp4(par_net(par), skb, par->hooknum, info->variant);
-#endif
 	return NF_DROP;
 }
 
@@ -500,12 +472,7 @@ tarpit_tg6(struct sk_buff *skb, const struct xt_action_param *par)
 		pr_debug("addr is not unicast.\n");
 		return NF_DROP;
 	}
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 	tarpit_tcp6(par_net(par), skb, par->state->hook, info->variant);
-#else
-	tarpit_tcp6(par_net(par), skb, par->hooknum, info->variant);
-#endif
 	return NF_DROP;
 }
 #endif

extensions/xt_iface.c

@@ -45,17 +45,9 @@ static const struct net_device *iface_get(const struct xt_iface_mtinfo *info,
     const struct xt_action_param *par, struct net_device **put)
 {
 	if (info->flags & XT_IFACE_DEV_IN)
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 		return par->state->in;
-#else
-		return par->in;
-#endif
 	else if (info->flags & XT_IFACE_DEV_OUT)
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 		return par->state->out;
-#else
-		return par->out;
-#endif
 	return *put = dev_get_by_name(&init_net, info->ifname);
 }
 

extensions/xt_ipp2p.c

@@ -511,7 +511,7 @@ search_bittorrent(const unsigned char *payload, const unsigned int plen)
 		 * but *must have* one (or more) of strings listed below (true for scrape and announce)
 		 */
 		if (memcmp(payload, "GET /", 5) == 0) {
-			if (HX_memmem(payload, plen, "info_hash=", 9) != NULL)
+			if (HX_memmem(payload, plen, "info_hash=", 10) != NULL)
 				return IPP2P_BIT * 100 + 1;
 			if (HX_memmem(payload, plen, "peer_id=", 8) != NULL)
 				return IPP2P_BIT * 100 + 2;

extensions/xt_lscan.c

@@ -204,11 +204,7 @@ lscan_mt(const struct sk_buff *skb, struct xt_action_param *par)
 		unsigned int n;
 
 		n = lscan_mt_full(ctdata->mark & connmark_mask, ctstate,
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
 		    par->state->in == init_net.loopback_dev, tcph,
-#else
-		    par->in == init_net.loopback_dev, tcph,
-#endif
 		    skb->len - par->thoff - 4 * tcph->doff);
 
 		ctdata->mark = (ctdata->mark & ~connmark_mask) | n;

geoip/xt_geoip_build

@@ -8,23 +8,45 @@ use IO::Handle;
 use Text::CSV_XS; # or trade for Text::CSV
 use strict;
 
+my $le32 = pack("V", 0x10000000);
+my $be32 = pack("N", 0x10000000);
+my $u32 = undef;
+
+sub wantBE { return !$u32 || $u32 eq $be32; }
+sub wantLE { return !$u32 || $u32 eq $le32; }
+
 my $csv = Text::CSV_XS->new({
 	allow_whitespace => 1,
 	binary => 1,
 	eol => $/,
 }); # or Text::CSV
 my $target_dir = ".";
+my $native_only = 0;
 
 &Getopt::Long::Configure(qw(bundling));
 &GetOptions(
 	"D=s" => \$target_dir,
+	"n"   => \$native_only,
 );
 
 if (!-d $target_dir) {
 	print STDERR "Target directory $target_dir does not exist.\n";
 	exit 1;
 }
-foreach (qw(LE BE)) {
+my @dbs = qw(LE BE);
+if ($native_only) {
+	$u32 = pack("L", 0x10000000);
+	if ($u32 eq $le32) {
+		@dbs = qw(LE);
+	} elsif ($u32 eq $be32) {
+		@dbs = qw(BE);
+	} else {
+		print STDERRR "Cannot determine endianness.\n";
+		exit 1;
+	}
+}
+
+foreach (@dbs) {
 	my $dir = "$target_dir/$_";
 	if (!-e $dir && !mkdir($dir)) {
 		print STDERR "Could not mkdir $dir: $!\n";
@@ -80,11 +102,18 @@ sub dump_one
 		scalar(@{$country->{pool_v6}}),
 		$iso_code, $country->{name};
 
+	if (wantLE) {
 		$file = "$target_dir/LE/".uc($iso_code).".iv6";
 		if (!open($fh_le, "> $file")) {
 			print STDERR "Error opening $file: $!\n";
 			exit 1;
 		}
+		foreach my $range (@{$country->{pool_v6}}) {
+			print $fh_le &ip6_swap($range->[0]), &ip6_swap($range->[1]);
+		}
+		close $fh_le;
+	}
+	if (wantBE) {
 		$file = "$target_dir/BE/".uc($iso_code).".iv6";
 		if (!open($fh_be, "> $file")) {
 			print STDERR "Error opening $file: $!\n";
@@ -92,31 +121,36 @@ sub dump_one
 		}
 		foreach my $range (@{$country->{pool_v6}}) {
 			print $fh_be $range->[0], $range->[1];
-		print $fh_le &ip6_swap($range->[0]), &ip6_swap($range->[1]);
 		}
-	close $fh_le;
 		close $fh_be;
+	}
 
 	printf "%5u IPv4 ranges for %s %s\n",
 		scalar(@{$country->{pool_v4}}),
 		$iso_code, $country->{name};
 
+	if (wantLE) {
 		$file = "$target_dir/LE/".uc($iso_code).".iv4";
 		if (!open($fh_le, "> $file")) {
 			print STDERR "Error opening $file: $!\n";
 			exit 1;
 		}
+		foreach my $range (@{$country->{pool_v4}}) {
+			print $fh_le pack("VV", $range->[0], $range->[1]);
+		}
+		close $fh_le;
+	}
+	if (wantBE) {
 		$file = "$target_dir/BE/".uc($iso_code).".iv4";
 		if (!open($fh_be, "> $file")) {
 			print STDERR "Error opening $file: $!\n";
 			exit 1;
 		}
 		foreach my $range (@{$country->{pool_v4}}) {
-		print $fh_le pack("VV", $range->[0], $range->[1]);
 			print $fh_be pack("NN", $range->[0], $range->[1]);
 		}
-	close $fh_le;
 		close $fh_be;
+	}
 }
 
 sub ip6_pack

xtables-addons.8.in

@@ -1,4 +1,4 @@
-.TH xtables-addons 8 "" "" "v2.13 (2017-06-27)"
+.TH xtables-addons 8 "Lilac" "" "v3.0 (2018-02-12)"
 .SH Name
 Xtables-addons \(em additional extensions for iptables, ip6tables, etc.
 .SH Targets