path: root/package/iptables/patches/08-chaostables.patch

diff -ruN iptables-1.3.5.orig/extensions/.CHAOS-test iptables-1.3.5/extensions/.CHAOS-test
--- iptables-1.3.5.orig/extensions/.CHAOS-test	1970-01-01 01:00:00.000000000 +0100
+++ iptables-1.3.5/extensions/.CHAOS-test	2007-01-09 16:05:23.251885840 +0100
@@ -0,0 +1,2 @@
+#!/bin/sh
+[ -f "$KERNEL_DIR/include/linux/netfilter/xt_CHAOS.h" ] && echo "CHAOS";
diff -ruN iptables-1.3.5.orig/extensions/.DELUDE-test iptables-1.3.5/extensions/.DELUDE-test
--- iptables-1.3.5.orig/extensions/.DELUDE-test	1970-01-01 01:00:00.000000000 +0100
+++ iptables-1.3.5/extensions/.DELUDE-test	2007-01-09 16:05:18.104057722 +0100
@@ -0,0 +1,2 @@
+#!/bin/sh
+echo "DELUDE";
diff -ruN iptables-1.3.5.orig/extensions/libipt_CHAOS.c iptables-1.3.5/extensions/libipt_CHAOS.c
--- iptables-1.3.5.orig/extensions/libipt_CHAOS.c	1970-01-01 01:00:00.000000000 +0100
+++ iptables-1.3.5/extensions/libipt_CHAOS.c	2007-01-09 16:05:23.251885840 +0100
@@ -0,0 +1,111 @@
+/*
+    CHAOS target for iptables
+
+    Copyright © Jan Engelhardt <jengelh [at] gmx de>, 2006 - 2007
+    released under the terms of the GNU General Public
+    License version 2.x and only versions 2.x.
+*/
+#include <getopt.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <iptables.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter/xt_CHAOS.h>
+
+static void libipt_chaos_help(void)
+{
+	printf(
+		"CHAOS target v%s options:\n"
+		"  --delude     Enable DELUDE processing for TCP\n"
+		"  --tarpit     Enable TARPIT processing for TCP\n",
+		IPTABLES_VERSION);
+	return;
+}
+
+static int libipt_chaos_parse(int c, char **argv, int invert,
+    unsigned int *flags, const struct ipt_entry *entry,
+    struct ipt_entry_target **target)
+{
+	struct xt_chaos_info *info = (void *)((*target)->data);
+	switch(c) {
+		case 'd':
+			info->variant = XTCHAOS_DELUDE;
+			*flags |= 0x02;
+			return 1;
+		case 't':
+			info->variant = XTCHAOS_TARPIT;
+			*flags |= 0x01;
+			return 1;
+	}
+	return 0;
+}
+
+static void libipt_chaos_check(unsigned int flags)
+{
+	if(flags != 0x03)
+		return;
+	/* If flags == 0x03, both were specified, which should not be. */
+	exit_error(PARAMETER_PROBLEM,
+	           "CHAOS: only one of --tarpit or --delude may be specified");
+	return;
+}
+
+static void libipt_chaos_print(const struct ipt_ip *ip,
+    const struct ipt_entry_target *target, int numeric)
+{
+	const struct xt_chaos_info *info = (const void *)target->data;
+	switch(info->variant) {
+		case XTCHAOS_DELUDE:
+			printf("DELUDE ");
+			break;
+		case XTCHAOS_TARPIT:
+			printf("TARPIT ");
+			break;
+		default:
+			break;
+	}
+	return;
+}
+
+static void libipt_chaos_save(const struct ipt_ip *ip,
+    const struct ipt_entry_target *target)
+{
+	const struct xt_chaos_info *info = (const void *)target->data;
+	switch(info->variant) {
+		case XTCHAOS_DELUDE:
+			printf("--delude ");
+			break;
+		case XTCHAOS_TARPIT:
+			printf("--tarpit ");
+			break;
+		default:
+			break;
+	}
+	return;
+}
+
+static struct option libipt_chaos_opts[] = {
+	{"delude", 0, NULL, 'd'},
+	{"tarpit", 0, NULL, 't'},
+	{NULL},
+};
+
+static struct iptables_target libipt_chaos_info = {
+	.name          = "CHAOS",
+	.version       = IPTABLES_VERSION,
+	.size          = IPT_ALIGN(sizeof(struct xt_chaos_info)),
+	.userspacesize = IPT_ALIGN(sizeof(struct xt_chaos_info)),
+	.help          = libipt_chaos_help,
+	.parse         = libipt_chaos_parse,
+	.final_check   = libipt_chaos_check,
+	.print         = libipt_chaos_print,
+	.save          = libipt_chaos_save,
+	.extra_opts    = libipt_chaos_opts,
+};
+
+static __attribute__((constructor)) void libipt_chaos_init(void)
+{
+	register_target(&libipt_chaos_info);
+	return;
+}
diff -ruN iptables-1.3.5.orig/extensions/libipt_DELUDE.c iptables-1.3.5/extensions/libipt_DELUDE.c
--- iptables-1.3.5.orig/extensions/libipt_DELUDE.c	1970-01-01 01:00:00.000000000 +0100
+++ iptables-1.3.5/extensions/libipt_DELUDE.c	2007-01-09 16:05:18.104057722 +0100
@@ -0,0 +1,66 @@
+/*
+    DELUDE target for iptables
+
+    Copyright © Jan Engelhardt <jengelh [at] gmx de>, 2006 - 2007
+    released under the terms of the GNU General Public
+    License version 2.x and only versions 2.x.
+*/
+#include <getopt.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <iptables.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+
+static void libipt_delude_help(void)
+{
+	printf("DELUDE takes no options\n");
+	return;
+}
+
+static int libipt_delude_parse(int c, char **argv, int invert,
+    unsigned int *flags, const struct ipt_entry *entry,
+    struct ipt_entry_target **target)
+{
+	return 0;
+}
+
+static void libipt_delude_check(unsigned int flags)
+{
+	return;
+}
+
+static void libipt_delude_print(const struct ipt_ip *ip,
+    const struct ipt_entry_target *target, int numeric)
+{
+	return;
+}
+
+static void libipt_delude_save(const struct ipt_ip *ip,
+    const struct ipt_entry_target *target)
+{
+	return;
+}
+
+static struct option libipt_delude_opts[] = {
+	{NULL},
+};
+
+static struct iptables_target libipt_delude_info = {
+	.name          = "DELUDE",
+	.version       = IPTABLES_VERSION,
+	.size          = IPT_ALIGN(0),
+	.userspacesize = IPT_ALIGN(0),
+	.help          = libipt_delude_help,
+	.parse         = libipt_delude_parse,
+	.final_check   = libipt_delude_check,
+	.print         = libipt_delude_print,
+	.save          = libipt_delude_save,
+	.extra_opts    = libipt_delude_opts,
+};
+
+static __attribute__((constructor)) void libipt_delude_init(void)
+{
+	register_target(&libipt_delude_info);
+	return;
+}
diff -ruN iptables-1.3.5.orig/extensions/libipt_portscan.c iptables-1.3.5/extensions/libipt_portscan.c
--- iptables-1.3.5.orig/extensions/libipt_portscan.c	1970-01-01 01:00:00.000000000 +0100
+++ iptables-1.3.5/extensions/libipt_portscan.c	2007-01-09 16:05:14.228187134 +0100
@@ -0,0 +1,129 @@
+/*
+    portscan match for iptables
+
+    Copyright © Jan Engelhardt <jengelh [at] gmx de>, 2006 - 2007
+    released under the terms of the GNU General Public
+    License version 2.x and only versions 2.x.
+*/
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <iptables.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter/xt_portscan.h>
+
+static void libipt_portscan_help(void)
+{
+	printf(
+		"portscan match v%s options:\n"
+		"(Combining them will make them match by OR-logic)\n"
+		"  --stealth    Match TCP Stealth packets\n"
+		"  --synscan    Match TCP SYN scans\n"
+		"  --cnscan     Match TCP Connect scans\n"
+		"  --grscan     Match Banner Grabbing scans\n",
+		IPTABLES_VERSION);
+	return;
+}
+
+static void libipt_portscan_mtinit(struct ipt_entry_match *match,
+    unsigned int *nfcache)
+{
+	/* Cannot cache this */
+	*nfcache |= NFC_UNKNOWN;
+	return;
+}
+
+static int libipt_portscan_parse(int c, char **argv, int invert,
+    unsigned int *flags, const struct ipt_entry *entry, unsigned int *nfc,
+    struct ipt_entry_match **match)
+{
+	struct xt_portscan_info *info = (void *)((*match)->data);
+
+	switch(c) {
+		case 'c':
+			info->match_cn = 1;
+			return 1;
+		case 'g':
+			info->match_gr = 1;
+			return 1;
+		case 's':
+			info->match_syn = 1;
+			return 1;
+		case 'x':
+			info->match_stealth = 1;
+			return 1;
+		default:
+			return 0;
+	}
+}
+
+static void libipt_portscan_check(unsigned int flags)
+{
+	return;
+}
+
+static void libipt_portscan_print(const struct ipt_ip *ip,
+    const struct ipt_entry_match *match, int numeric)
+{
+	const struct xt_portscan_info *info = (const void *)(match->data);
+	const char *s = "";
+
+	printf("portscan ");
+	if(info->match_stealth) {
+		printf("STEALTH");
+		s = ",";
+	}
+	if(info->match_syn) {
+		printf("%sSYNSCAN", s);
+		s = ",";
+	}
+	if(info->match_cn) {
+		printf("%sCNSCAN", s);
+		s = ",";
+	}
+	if(info->match_gr)
+		printf("%sGRSCAN", s);
+	printf(" ");
+	return;
+}
+
+static void libipt_portscan_save(const struct ipt_ip *ip,
+    const struct ipt_entry_match *match)
+{
+	const struct xt_portscan_info *info = (const void *)(match->data);
+	if(info->match_stealth)	printf("--stealth ");
+	if(info->match_syn)	printf("--synscan ");
+	if(info->match_cn)	printf("--cnscan ");
+	if(info->match_gr)	printf("--grscan ");
+	return;
+}
+
+static struct option libipt_portscan_opts[] = {
+	{"stealth", 0, NULL, 'x'},
+	{"synscan", 0, NULL, 's'},
+	{"cnscan",  0, NULL, 'c'},
+	{"grscan",  0, NULL, 'g'},
+	{NULL},
+};
+
+static struct iptables_match libipt_portscan_info = {
+	.name          = "portscan",
+	.version       = IPTABLES_VERSION,
+	.size          = IPT_ALIGN(sizeof(struct xt_portscan_info)),
+	.userspacesize = IPT_ALIGN(sizeof(struct xt_portscan_info)),
+	.help          = libipt_portscan_help,
+	.init          = libipt_portscan_mtinit,
+	.parse         = libipt_portscan_parse,
+	.final_check   = libipt_portscan_check,
+	.print         = libipt_portscan_print,
+	.save          = libipt_portscan_save,
+	.extra_opts    = libipt_portscan_opts,
+};
+
+static __attribute__((constructor)) void libipt_portscan_init(void)
+{
+	register_match(&libipt_portscan_info);
+	return;
+}
diff -ruN iptables-1.3.5.orig/extensions/Makefile iptables-1.3.5/extensions/Makefile
--- iptables-1.3.5.orig/extensions/Makefile	2007-01-09 16:03:37.000000000 +0100
+++ iptables-1.3.5/extensions/Makefile	2007-01-09 16:06:34.501506743 +0100
@@ -5,7 +5,7 @@
 # header files are present in the include/linux directory of this iptables
 # package (HW)
 #
-PF_EXT_SLIB:=ah addrtype comment connlimit connmark conntrack dscp ecn esp hashlimit helper icmp iprange length limit mac mark multiport owner physdev pkttype policy realm rpc sctp standard state tcp tcpmss tos ttl udp unclean CLASSIFY CONNMARK DNAT DSCP ECN LOG MARK MASQUERADE MIRROR NETMAP NFQUEUE NOTRACK REDIRECT REJECT SAME SNAT TARPIT TCPMSS TOS TRACE TTL ULOG
+PF_EXT_SLIB:=ah addrtype comment connlimit connmark conntrack dscp ecn esp hashlimit helper icmp iprange length limit mac mark multiport owner physdev pkttype policy portscan realm rpc sctp standard state tcp tcpmss tos ttl udp unclean CHAOS CLASSIFY CONNMARK DELUDE DNAT DSCP ECN LOG MARK MASQUERADE MIRROR NETMAP NFQUEUE NOTRACK REDIRECT REJECT SAME SNAT TARPIT TCPMSS TOS TRACE TTL ULOG
 PF6_EXT_SLIB:=connmark eui64 hl icmpv6 length limit mac mark multiport owner physdev policy standard state tcp udp CONNMARK HL LOG NFQUEUE MARK TRACE
 
 
diff -ruN iptables-1.3.5.orig/extensions/.portscan-test iptables-1.3.5/extensions/.portscan-test
--- iptables-1.3.5.orig/extensions/.portscan-test	1970-01-01 01:00:00.000000000 +0100
+++ iptables-1.3.5/extensions/.portscan-test	2007-01-09 16:05:14.228187134 +0100
@@ -0,0 +1,2 @@
+#!/bin/sh
+[ -f "$KERNEL_DIR/include/linux/netfilter/xt_portscan.h" ] && echo "portscan";