Xtables-addons 1.13

This revision 1 of ipv4options makes it possible to match the
presence or absence of any of the 32 possible IP options, either all
or any of the options the user specified.

INSTALL

@@ -12,8 +12,7 @@ in combination with the kernel's Kbuild system.
 Supported configurations for this release
 =========================================
 
-	* iptables >= 1.4.1
-	  upper bound: iptables <= 1.4.3-rc1
+	* iptables >= 1.4.3
 
 	* kernel-source >= 2.6.17, no upper bound known
 	  with prepared build/output directory

Makefile.am

@@ -1,7 +1,6 @@
 # -*- Makefile -*-
 
 ACLOCAL_AMFLAGS  = -I m4
-AUTOMAKE_OPTIONS = foreign subdir-objects
 SUBDIRS          = extensions
 
 man_MANS := xtables-addons.8

configure.ac

@@ -1,9 +1,9 @@
 
-AC_INIT([xtables-addons], [1.12])
+AC_INIT([xtables-addons], [1.13])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 AC_PROG_INSTALL
-AM_INIT_AUTOMAKE([-Wall])
+AM_INIT_AUTOMAKE([-Wall foreign subdir-objects])
 AC_PROG_CC
 AM_PROG_CC_C_O
 AC_DISABLE_STATIC
@@ -28,8 +28,11 @@ AC_ARG_WITH([xtlibdir],
 	[xtlibdir="$withval"],
 	[xtlibdir='${libexecdir}/xtables'])
 
-AC_MSG_CHECKING([xtables.h presence])
+#
+# --with-xtables= overrides a possibly installed pkgconfig file.
+#
 if [[ -n "$xtables_location" ]]; then
+	AC_MSG_CHECKING([xtables.h presence])
 	if [[ -f "$xtables_location/xtables.h" ]]; then
 		AC_MSG_RESULT([$xtables_location/xtables.h])
 		xtables_CFLAGS="-I $xtables_location";
@@ -37,13 +40,15 @@ if [[ -n "$xtables_location" ]]; then
 		AC_MSG_RESULT([$xtables_location/include/xtables.h])
 		xtables_CFLAGS="-I $xtables_location/include";
 	fi;
-fi;
-if [[ -z "$xtables_CFLAGS" ]]; then
-	if [[ -f "$includedir/xtables.h" ]]; then
-		AC_MSG_RESULT([$includedir/xtables.h])
-	else
-		AC_MSG_RESULT([no])
+	if [[ -z "$xtables_CFLAGS" ]]; then
+		if [[ -f "$includedir/xtables.h" ]]; then
+			AC_MSG_RESULT([$includedir/xtables.h])
+		else
+			AC_MSG_RESULT([no])
+		fi;
 	fi;
+else
+	PKG_CHECK_MODULES([libxtables], [xtables >= 1.4.3])
 fi;
 
 regular_CFLAGS="-D_LARGEFILE_SOURCE=1 -D_LARGE_FILES -D_FILE_OFFSET_BITS=64 \

doc/changelog.txt

@@ -1,5 +1,11 @@
 
 
+Xtables-addons 1.13 (March 23 2009)
+===================================
+- added a reworked ipv4options match
+- upgrade to iptables 1.4.3 API
+
+
 Xtables-addons 1.12 (March 07 2009)
 ===================================
 - ipset: fix for compilation with 2.6.29-rt

extensions/Kbuild

@@ -19,6 +19,7 @@ obj-${build_fuzzy}       += xt_fuzzy.o
 obj-${build_geoip}       += xt_geoip.o
 obj-${build_ipp2p}       += xt_ipp2p.o
 obj-${build_ipset}       += ipset/
+obj-${build_ipv4options} += xt_ipv4options.o
 obj-${build_length2}     += xt_length2.o
 obj-${build_lscan}       += xt_lscan.o
 obj-${build_quota2}      += xt_quota2.o

extensions/Mbuild

@@ -12,6 +12,7 @@ obj-${build_fuzzy}       += libxt_fuzzy.so
 obj-${build_geoip}       += libxt_geoip.so
 obj-${build_ipp2p}       += libxt_ipp2p.so
 obj-${build_ipset}       += ipset/
+obj-${build_ipv4options} += libxt_ipv4options.so
 obj-${build_length2}     += libxt_length2.so
 obj-${build_lscan}       += libxt_lscan.so
 obj-${build_quota2}      += libxt_quota2.so

extensions/libxt_CHAOS.c

@@ -58,7 +58,7 @@ static void chaos_tg_check(unsigned int flags)
 {
 	if (flags == (F_DELUDE | F_TARPIT))
 		/* If flags == 0x03, both were specified, which should not be. */
-		exit_error(PARAMETER_PROBLEM,
+		xtables_error(PARAMETER_PROBLEM,
 		           "CHAOS: only one of --tarpit or --delude "
 		           "may be specified");
 }

extensions/libxt_DHCPADDR.c

@@ -42,10 +42,10 @@ static int dhcpaddr_tg_parse(int c, char **argv, int invert,
 
 	switch (c) {
 	case 'M':
-		param_act(P_ONLY_ONCE, "DHCPADDR", "--set-mac", *flags & F_MAC);
-		param_act(P_NO_INVERT, "DHCPADDR", "--set-mac", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "DHCPADDR", "--set-mac", *flags & F_MAC);
+		xtables_param_act(XTF_NO_INVERT, "DHCPADDR", "--set-mac", invert);
 		if (!mac_parse(optarg, info->addr, &info->mask))
-			param_act(P_BAD_VALUE, "DHCPADDR", "--set-mac", optarg);
+			xtables_param_act(XTF_BAD_VALUE, "DHCPADDR", "--set-mac", optarg);
 		*flags |= F_MAC;
 		return true;
 	}
@@ -56,7 +56,7 @@ static int dhcpaddr_tg_parse(int c, char **argv, int invert,
 static void dhcpaddr_tg_check(unsigned int flags)
 {
 	if (flags == 0)
-		exit_error(PARAMETER_PROBLEM, "DHCPADDR target: "
+		xtables_error(PARAMETER_PROBLEM, "DHCPADDR target: "
 		           "--set-mac parameter required");
 }
 

extensions/libxt_IPMARK.c

@@ -58,44 +58,44 @@ static int ipmark_tg_parse(int c, char **argv, int invert, unsigned int *flags,
 
 	switch (c) {
 	case '1':
-		param_act(P_ONLY_ONCE, "IPMARK", "addr", *flags & FL_ADDR_USED);
-		param_act(P_NO_INVERT, "IPMARK", "addr", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "IPMARK", "addr", *flags & FL_ADDR_USED);
+		xtables_param_act(XTF_NO_INVERT, "IPMARK", "addr", invert);
 		if (strcmp(optarg, "src") == 0)
 			info->selector = XT_IPMARK_SRC;
 		else if (strcmp(optarg, "dst") == 0)
 			info->selector = XT_IPMARK_DST;
 		else
-			exit_error(PARAMETER_PROBLEM, "Bad addr value `%s' - should be `src' or `dst'", optarg);
+			xtables_error(PARAMETER_PROBLEM, "Bad addr value `%s' - should be `src' or `dst'", optarg);
 		*flags |= FL_ADDR_USED;
 		return true;
 
 	case '2':
-		param_act(P_ONLY_ONCE, "IPMARK", "and-mask", *flags & FL_AND_MASK_USED);
-		param_act(P_NO_INVERT, "IPMARK", "and-mask", invert);
-		if (!strtonum(optarg, NULL, &n, 0, ~0U))
-			param_act(P_BAD_VALUE, "IPMARK", "and-mask", optarg);
+		xtables_param_act(XTF_ONLY_ONCE, "IPMARK", "and-mask", *flags & FL_AND_MASK_USED);
+		xtables_param_act(XTF_NO_INVERT, "IPMARK", "and-mask", invert);
+		if (!xtables_strtoui(optarg, NULL, &n, 0, ~0U))
+			xtables_param_act(XTF_BAD_VALUE, "IPMARK", "and-mask", optarg);
 		info->andmask = n;
 		*flags |= FL_AND_MASK_USED;
 		return true;
 
 	case '3':
-		param_act(P_ONLY_ONCE, "IPMARK", "or-mask", *flags & FL_OR_MASK_USED);
-		param_act(P_NO_INVERT, "IPMARK", "or-mask", invert);
-		if (!strtonum(optarg, NULL, &n, 0, ~0U))
-			param_act(P_BAD_VALUE, "IPMARK", "or-mask", optarg);
+		xtables_param_act(XTF_ONLY_ONCE, "IPMARK", "or-mask", *flags & FL_OR_MASK_USED);
+		xtables_param_act(XTF_NO_INVERT, "IPMARK", "or-mask", invert);
+		if (!xtables_strtoui(optarg, NULL, &n, 0, ~0U))
+			xtables_param_act(XTF_BAD_VALUE, "IPMARK", "or-mask", optarg);
 		info->ormask = n;
 		*flags |= FL_OR_MASK_USED;
 		return true;
 
 	case '4':
-		param_act(P_ONLY_ONCE, "IPMARK", "--shift", *flags & FL_SHIFT);
-		param_act(P_NO_INVERT, "IPMARK", "--shift", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "IPMARK", "--shift", *flags & FL_SHIFT);
+		xtables_param_act(XTF_NO_INVERT, "IPMARK", "--shift", invert);
 		/*
 		 * Anything >31 does not make sense for IPv4, but it still
 		 * does the right thing.
 		 */
-		if (!strtonum(optarg, NULL, &n, 0, 128))
-			param_act(P_BAD_VALUE, "IPMARK", "--shift", optarg);
+		if (!xtables_strtoui(optarg, NULL, &n, 0, 128))
+			xtables_param_act(XTF_BAD_VALUE, "IPMARK", "--shift", optarg);
 		info->shift = n;
 		return true;
 	}
@@ -106,7 +106,7 @@ static int ipmark_tg_parse(int c, char **argv, int invert, unsigned int *flags,
 static void ipmark_tg_check(unsigned int flags)
 {
 	if (!(flags & FL_ADDR_USED))
-		exit_error(PARAMETER_PROBLEM,
+		xtables_error(PARAMETER_PROBLEM,
 		           "IPMARK target: Parameter --addr is required");
 }
 

extensions/libxt_LOGMARK.c

@@ -51,23 +51,23 @@ logmark_tg_parse(int c, char **argv, int invert, unsigned int *flags,
 
 	switch (c) {
 	case 'l': /* --log-level */
-		param_act(P_ONLY_ONCE, "LOGMARK", "--log-level", *flags & F_LEVEL);
-		param_act(P_NO_INVERT, "LOGMARK", "--log-level", invert);
-		if (!strtonum(optarg, NULL, &x, 0, 8))
-			param_act(P_BAD_VALUE, "LOGMARK", "--log-level", optarg);
+		xtables_param_act(XTF_ONLY_ONCE, "LOGMARK", "--log-level", *flags & F_LEVEL);
+		xtables_param_act(XTF_NO_INVERT, "LOGMARK", "--log-level", invert);
+		if (!xtables_strtoui(optarg, NULL, &x, 0, 8))
+			xtables_param_act(XTF_BAD_VALUE, "LOGMARK", "--log-level", optarg);
 		info->level = x;
 		*flags |= F_LEVEL;
 		return true;
 
 	case 'p': /* --log-prefix */
-		param_act(P_ONLY_ONCE, "LOGMARK", "--log-prefix", *flags & F_PREFIX);
-		param_act(P_NO_INVERT, "LOGMARK", "--log-prefix", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "LOGMARK", "--log-prefix", *flags & F_PREFIX);
+		xtables_param_act(XTF_NO_INVERT, "LOGMARK", "--log-prefix", invert);
 		if (strlen(optarg) > sizeof(info->prefix))
-			exit_error(PARAMETER_PROBLEM, "LOGMARK: Maximum "
+			xtables_error(PARAMETER_PROBLEM, "LOGMARK: Maximum "
 			           "prefix length is %zu",
 			           sizeof(info->prefix));
 		if (strchr(optarg, '\n'))
-			exit_error(PARAMETER_PROBLEM, "LOGMARK: Newlines not "
+			xtables_error(PARAMETER_PROBLEM, "LOGMARK: Newlines not "
 			           "allowed in log prefix");
 		strncpy(info->prefix, optarg, sizeof(info->prefix));
 		*flags |= F_PREFIX;

extensions/libxt_TEE.c

@@ -50,12 +50,12 @@ static int tee_tg_parse(int c, char **argv, int invert, unsigned int *flags,
 	switch (c) {
 	case 'g':
 		if (*flags & FLAG_GATEWAY)
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 			           "Cannot specify --gw more than once");
 
-		ia = numeric_to_ipaddr(optarg);
+		ia = xtables_numeric_to_ipaddr(optarg);
 		if (ia == NULL)
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 			           "Invalid IP address %s", optarg);
 
 		memcpy(&info->gw, ia, sizeof(*ia));
@@ -75,12 +75,12 @@ static int tee_tg6_parse(int c, char **argv, int invert, unsigned int *flags,
 	switch (c) {
 	case 'g':
 		if (*flags & FLAG_GATEWAY)
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 			           "Cannot specify --gw more than once");
 
-		ia = numeric_to_ip6addr(optarg);
+		ia = xtables_numeric_to_ip6addr(optarg);
 		if (ia == NULL)
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 			           "Invalid IP address %s", optarg);
 
 		memcpy(&info->gw, ia, sizeof(*ia));
@@ -94,7 +94,7 @@ static int tee_tg6_parse(int c, char **argv, int invert, unsigned int *flags,
 static void tee_tg_check(unsigned int flags)
 {
 	if (flags == 0)
-		exit_error(PARAMETER_PROBLEM, "TEE target: "
+		xtables_error(PARAMETER_PROBLEM, "TEE target: "
 		           "--gateway parameter required");
 }
 
@@ -104,9 +104,9 @@ static void tee_tg_print(const void *ip, const struct xt_entry_target *target,
 	const struct xt_tee_tginfo *info = (const void *)target->data;
 
 	if (numeric)
-		printf("TEE gw:%s ", ipaddr_to_numeric(&info->gw.in));
+		printf("TEE gw:%s ", xtables_ipaddr_to_numeric(&info->gw.in));
 	else
-		printf("TEE gw:%s ", ipaddr_to_anyname(&info->gw.in));
+		printf("TEE gw:%s ", xtables_ipaddr_to_anyname(&info->gw.in));
 }
 
 static void tee_tg6_print(const void *ip, const struct xt_entry_target *target,
@@ -115,23 +115,23 @@ static void tee_tg6_print(const void *ip, const struct xt_entry_target *target,
 	const struct xt_tee_tginfo *info = (const void *)target->data;
 
 	if (numeric)
-		printf("TEE gw:%s ", ip6addr_to_numeric(&info->gw.in6));
+		printf("TEE gw:%s ", xtables_ip6addr_to_numeric(&info->gw.in6));
 	else
-		printf("TEE gw:%s ", ip6addr_to_anyname(&info->gw.in6));
+		printf("TEE gw:%s ", xtables_ip6addr_to_anyname(&info->gw.in6));
 }
 
 static void tee_tg_save(const void *ip, const struct xt_entry_target *target)
 {
 	const struct xt_tee_tginfo *info = (const void *)target->data;
 
-	printf("--gateway %s ", ipaddr_to_numeric(&info->gw.in));
+	printf("--gateway %s ", xtables_ipaddr_to_numeric(&info->gw.in));
 }
 
 static void tee_tg6_save(const void *ip, const struct xt_entry_target *target)
 {
 	const struct xt_tee_tginfo *info = (const void *)target->data;
 
-	printf("--gateway %s ", ip6addr_to_numeric(&info->gw.in6));
+	printf("--gateway %s ", xtables_ip6addr_to_numeric(&info->gw.in6));
 }
 
 static struct xtables_target tee_tg_reg = {

extensions/libxt_condition.c

@@ -37,13 +37,13 @@ static int condition_parse(int c, char **argv, int invert, unsigned int *flags,
 
 	if (c == 'X') {
 		if (*flags)
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 				   "Can't specify multiple conditions");
 
 		if (strlen(optarg) < sizeof(info->name))
 			strcpy(info->name, optarg);
 		else
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 				   "File name too long");
 
 		info->invert = invert;
@@ -57,7 +57,7 @@ static int condition_parse(int c, char **argv, int invert, unsigned int *flags,
 static void condition_check(unsigned int flags)
 {
 	if (flags == 0)
-		exit_error(PARAMETER_PROBLEM,
+		xtables_error(PARAMETER_PROBLEM,
 			   "Condition match: must specify --condition");
 }
 

extensions/libxt_dhcpaddr.c

@@ -41,10 +41,10 @@ static int dhcpaddr_mt_parse(int c, char **argv, int invert,
 
 	switch (c) {
 	case 'M':
-		param_act(P_ONLY_ONCE, "dhcpaddr", "--mac", *flags & F_MAC);
-		param_act(P_NO_INVERT, "dhcpaddr", "--mac", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "dhcpaddr", "--mac", *flags & F_MAC);
+		xtables_param_act(XTF_NO_INVERT, "dhcpaddr", "--mac", invert);
 		if (!mac_parse(optarg, info->addr, &info->mask))
-			param_act(P_BAD_VALUE, "dhcpaddr", "--mac", optarg);
+			xtables_param_act(XTF_BAD_VALUE, "dhcpaddr", "--mac", optarg);
 		if (invert)
 			info->invert = true;
 		*flags |= F_MAC;
@@ -57,7 +57,7 @@ static int dhcpaddr_mt_parse(int c, char **argv, int invert,
 static void dhcpaddr_mt_check(unsigned int flags)
 {
 	if (flags == 0)
-		exit_error(PARAMETER_PROBLEM, "dhcpaddr match: "
+		xtables_error(PARAMETER_PROBLEM, "dhcpaddr match: "
 		           "--mac parameter required");
 }
 

extensions/libxt_fuzzy.c

@@ -54,22 +54,22 @@ static int fuzzy_mt_parse(int c, char **argv, int invert, unsigned int *flags,
 	switch (c) {
 	case '1':
 		if (invert)
-			exit_error(PARAMETER_PROBLEM,"Can't specify ! --lower-limit");
+			xtables_error(PARAMETER_PROBLEM,"Can't specify ! --lower-limit");
 		if (*flags & IPT_FUZZY_OPT_MINIMUM)
-			exit_error(PARAMETER_PROBLEM,"Can't specify --lower-limit twice");
-		if (string_to_number(optarg,1,FUZZY_MAX_RATE,&num) == -1 || num < 1)
-			exit_error(PARAMETER_PROBLEM,"BAD --lower-limit");
+			xtables_error(PARAMETER_PROBLEM,"Can't specify --lower-limit twice");
+		if (!xtables_strtoui(optarg, NULL, &num, 1, FUZZY_MAX_RATE) == -1 || num < 1)
+			xtables_error(PARAMETER_PROBLEM,"BAD --lower-limit");
 		info->minimum_rate = num;
 		*flags |= IPT_FUZZY_OPT_MINIMUM;
 		return true;
 
 	case '2':
 		if (invert)
-			exit_error(PARAMETER_PROBLEM,"Can't specify ! --upper-limit");
+			xtables_error(PARAMETER_PROBLEM,"Can't specify ! --upper-limit");
 		if (*flags & IPT_FUZZY_OPT_MAXIMUM)
-			exit_error(PARAMETER_PROBLEM,"Can't specify --upper-limit twice");
-		if (string_to_number(optarg,1,FUZZY_MAX_RATE,&num) == -1 || num < 1)
-			exit_error(PARAMETER_PROBLEM,"BAD --upper-limit");
+			xtables_error(PARAMETER_PROBLEM,"Can't specify --upper-limit twice");
+		if (!xtables_strtoui(optarg, NULL, &num, 1, FUZZY_MAX_RATE) == -1 || num < 1)
+			xtables_error(PARAMETER_PROBLEM,"BAD --upper-limit");
 		info->maximum_rate = num;
 		*flags |= IPT_FUZZY_OPT_MAXIMUM;
 		return true;

extensions/libxt_geoip.c

@@ -64,16 +64,16 @@ static struct geoip_subnet *geoip_get_subnets(const char *code, uint32_t *count)
 
 	if ((fd = open(buf, O_RDONLY)) < 0) {
 		fprintf(stderr, "Could not open %s: %s\n", buf, strerror(errno));
-		exit_error(OTHER_PROBLEM, "Could not read geoip database");
+		xtables_error(OTHER_PROBLEM, "Could not read geoip database");
 	}
 
 	fstat(fd, &sb);
 	if (sb.st_size % sizeof(struct geoip_subnet) != 0)
-		exit_error(OTHER_PROBLEM, "Database file %s seems to be "
+		xtables_error(OTHER_PROBLEM, "Database file %s seems to be "
 		           "corrupted", buf);
 	subnets = malloc(sb.st_size);
 	if (subnets == NULL)
-		exit_error(OTHER_PROBLEM, "geoip: insufficient memory");
+		xtables_error(OTHER_PROBLEM, "geoip: insufficient memory");
 	read(fd, subnets, sb.st_size);
 	close(fd);
 	*count = sb.st_size / sizeof(struct geoip_subnet);
@@ -103,7 +103,7 @@ check_geoip_cc(char *cc, u_int16_t cc_used[], u_int8_t count)
 
 	if (strlen(cc) != 2) /* Country must be 2 chars long according
 													 to the ISO3166 standard */
-		exit_error(PARAMETER_PROBLEM,
+		xtables_error(PARAMETER_PROBLEM,
 			"geoip: invalid country code '%s'", cc);
 
 	// Verification will fail if chars aren't uppercased.
@@ -112,7 +112,7 @@ check_geoip_cc(char *cc, u_int16_t cc_used[], u_int8_t count)
 		if (isalnum(cc[i]) != 0)
 			cc[i] = toupper(cc[i]);
 		else
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 				"geoip:  invalid country code '%s'", cc);
 
 	/* Convert chars into a single 16 bit integer.
@@ -140,7 +140,7 @@ static unsigned int parse_geoip_cc(const char *ccstr, uint16_t *cc,
 
 	buffer = strdup(ccstr);
 	if (!buffer)
-		exit_error(OTHER_PROBLEM,
+		xtables_error(OTHER_PROBLEM,
 			"geoip: insufficient memory available");
 
 	for (cp = buffer, i = 0; cp && i < XT_GEOIP_MAX; cp = next, i++)
@@ -150,19 +150,19 @@ static unsigned int parse_geoip_cc(const char *ccstr, uint16_t *cc,
 
 		if ((cctmp = check_geoip_cc(cp, cc, count)) != 0) {
 			if ((mem[count++].user = (unsigned long)geoip_load_cc(cp, cctmp)) == 0)
-				exit_error(OTHER_PROBLEM,
+				xtables_error(OTHER_PROBLEM,
 					"geoip: insufficient memory available");
 			cc[count-1] = cctmp;
 		}
 	}
 
 	if (cp)
-		exit_error(PARAMETER_PROBLEM,
+		xtables_error(PARAMETER_PROBLEM,
 			"geoip: too many countries specified");
 	free(buffer);
 
 	if (count == 0)
-		exit_error(PARAMETER_PROBLEM,
+		xtables_error(PARAMETER_PROBLEM,
 			"geoip: don't know what happened");
 
 	return count;
@@ -176,7 +176,7 @@ static int geoip_parse(int c, char **argv, int invert, unsigned int *flags,
 	switch (c) {
 	case '1':
 		if (*flags & (XT_GEOIP_SRC | XT_GEOIP_DST))
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 				"geoip: Only exactly one of --source-country "
 				"or --destination-country must be specified!");
 
@@ -190,7 +190,7 @@ static int geoip_parse(int c, char **argv, int invert, unsigned int *flags,
 
 	case '2':
 		if (*flags & (XT_GEOIP_SRC | XT_GEOIP_DST))
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 				"geoip: Only exactly one of --source-country "
 				"or --destination-country must be specified!");
 
@@ -210,7 +210,7 @@ static void
 geoip_final_check(unsigned int flags)
 {
 	if (!flags)
-		exit_error(PARAMETER_PROBLEM,
+		xtables_error(PARAMETER_PROBLEM,
 			"geoip: missing arguments");
 }
 

extensions/libxt_ipp2p.c

@@ -63,109 +63,109 @@ static int ipp2p_mt_parse(int c, char **argv, int invert, unsigned int *flags,
 
 	switch (c) {
 	case '2':		/*cmd: edk*/
-		param_act(P_ONLY_ONCE, "--edk", *flags & IPP2P_EDK);
-		param_act(P_NO_INVERT, "--edk", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--edk", *flags & IPP2P_EDK);
+		xtables_param_act(XTF_NO_INVERT, "--edk", invert);
 		if (*flags & IPP2P_DATA_EDK)
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 				"ipp2p: use `--edk' OR `--edk-data' but not both of them!");
 		*flags    |= IPP2P_EDK;
 		info->cmd |= IPP2P_EDK;
 		break;
 
 	case '7':		/*cmd: dc*/
-		param_act(P_ONLY_ONCE, "--dc", *flags & IPP2P_DC);
-		param_act(P_NO_INVERT, "--dc", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--dc", *flags & IPP2P_DC);
+		xtables_param_act(XTF_NO_INVERT, "--dc", invert);
 		if (*flags & IPP2P_DATA_DC)
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 				"ipp2p: use `--dc' OR `--dc-data' but not both of them!");
 		*flags    |= IPP2P_DC;
 		info->cmd |= IPP2P_DC;
 		break;
 
 	case '9':		/*cmd: gnu*/
-		param_act(P_ONLY_ONCE, "--gnu", *flags & IPP2P_GNU);
-		param_act(P_NO_INVERT, "--gnu", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--gnu", *flags & IPP2P_GNU);
+		xtables_param_act(XTF_NO_INVERT, "--gnu", invert);
 		if (*flags & IPP2P_DATA_GNU)
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 				"ipp2p: use `--gnu' OR `--gnu-data' but not both of them!");
 		*flags    |= IPP2P_GNU;
 		info->cmd |= IPP2P_GNU;
 		break;
 
 	case 'a':		/*cmd: kazaa*/
-		param_act(P_ONLY_ONCE, "--kazaa", *flags & IPP2P_KAZAA);
-		param_act(P_NO_INVERT, "--kazaa", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--kazaa", *flags & IPP2P_KAZAA);
+		xtables_param_act(XTF_NO_INVERT, "--kazaa", invert);
 		if (*flags & IPP2P_DATA_KAZAA)
-			exit_error(PARAMETER_PROBLEM,
+			xtables_error(PARAMETER_PROBLEM,
 				"ipp2p: use `--kazaa' OR `--kazaa-data' but not both of them!");
 		*flags    |= IPP2P_KAZAA;
 		info->cmd |= IPP2P_KAZAA;
 		break;
 
 	case 'b':		/*cmd: bit*/
-		param_act(P_ONLY_ONCE, "--kazaa", *flags & IPP2P_BIT);
-		param_act(P_NO_INVERT, "--kazaa", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--kazaa", *flags & IPP2P_BIT);
+		xtables_param_act(XTF_NO_INVERT, "--kazaa", invert);
 		*flags    |= IPP2P_BIT;
 		info->cmd |= IPP2P_BIT;
 		break;
 
 	case 'c':		/*cmd: apple*/
-		param_act(P_ONLY_ONCE, "--apple", *flags & IPP2P_APPLE);
-		param_act(P_NO_INVERT, "--apple", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--apple", *flags & IPP2P_APPLE);
+		xtables_param_act(XTF_NO_INVERT, "--apple", invert);
 		*flags    |= IPP2P_APPLE;
 		info->cmd |= IPP2P_APPLE;
 		break;
 
 	case 'd':		/*cmd: soul*/
-		param_act(P_ONLY_ONCE, "--soul", *flags & IPP2P_SOUL);
-		param_act(P_NO_INVERT, "--soul", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--soul", *flags & IPP2P_SOUL);
+		xtables_param_act(XTF_NO_INVERT, "--soul", invert);
 		*flags    |= IPP2P_SOUL;
 		info->cmd |= IPP2P_SOUL;
 		break;
 
 	case 'e':		/*cmd: winmx*/
-		param_act(P_ONLY_ONCE, "--winmx", *flags & IPP2P_WINMX);
-		param_act(P_NO_INVERT, "--winmx", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--winmx", *flags & IPP2P_WINMX);
+		xtables_param_act(XTF_NO_INVERT, "--winmx", invert);
 		*flags    |= IPP2P_WINMX;
 		info->cmd |= IPP2P_WINMX;
 		break;
 
 	case 'f':		/*cmd: ares*/
-		param_act(P_ONLY_ONCE, "--ares", *flags & IPP2P_ARES);
-		param_act(P_NO_INVERT, "--ares", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--ares", *flags & IPP2P_ARES);
+		xtables_param_act(XTF_NO_INVERT, "--ares", invert);
 		*flags    |= IPP2P_ARES;
 		info->cmd |= IPP2P_ARES;
 		break;
 
 	case 'g':		/*cmd: mute*/
-		param_act(P_ONLY_ONCE, "--mute", *flags & IPP2P_MUTE);
-		param_act(P_NO_INVERT, "--mute", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--mute", *flags & IPP2P_MUTE);
+		xtables_param_act(XTF_NO_INVERT, "--mute", invert);
 		*flags    |= IPP2P_MUTE;
 		info->cmd |= IPP2P_MUTE;
 		break;
 
 	case 'h':		/*cmd: waste*/
-		param_act(P_ONLY_ONCE, "--waste", *flags & IPP2P_WASTE);
-		param_act(P_NO_INVERT, "--waste", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--waste", *flags & IPP2P_WASTE);
+		xtables_param_act(XTF_NO_INVERT, "--waste", invert);
 		*flags    |= IPP2P_WASTE;
 		info->cmd |= IPP2P_WASTE;
 		break;
 
 	case 'i':		/*cmd: xdcc*/
-		param_act(P_ONLY_ONCE, "--xdcc", *flags & IPP2P_XDCC);
-		param_act(P_NO_INVERT, "--xdcc", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--xdcc", *flags & IPP2P_XDCC);
+		xtables_param_act(XTF_NO_INVERT, "--xdcc", invert);
 		*flags    |= IPP2P_XDCC;
 		info->cmd |= IPP2P_XDCC;
 		break;
 
 	case 'j':		/*cmd: debug*/
-		param_act(P_ONLY_ONCE, "--debug", info->debug);
-		param_act(P_NO_INVERT, "--debug", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "--debug", info->debug);
+		xtables_param_act(XTF_NO_INVERT, "--debug", invert);
 		info->debug = 1;
 		break;
 
 	default:
-//		exit_error(PARAMETER_PROBLEM,
+//		xtables_error(PARAMETER_PROBLEM,
 //		"\nipp2p-parameter problem: for ipp2p usage type: iptables -m ipp2p --help\n");
 		return 0;
 	}
@@ -175,7 +175,7 @@ static int ipp2p_mt_parse(int c, char **argv, int invert, unsigned int *flags,
 static void ipp2p_mt_check(unsigned int flags)
 {
 	if (!flags)
-		exit_error(PARAMETER_PROBLEM,
+		xtables_error(PARAMETER_PROBLEM,
 			"\nipp2p-parameter problem: for ipp2p usage type: iptables -m ipp2p --help\n");
 }
 

extensions/libxt_ipv4options.c

@@ -0,0 +1,177 @@
+/*
+ *	"ipv4options" match extension for iptables
+ *	Coprygith © Jan Engelhardt, 2009
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License; either
+ *	version 2 of the License, or any later version, as published by the
+ *	Free Software Foundation.
+ */
+#include <getopt.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <xtables.h>
+#include "xt_ipv4options.h"
+
+/*
+ * Overview from http://www.networksorcery.com/enp/protocol/ip.htm
+ * Not providing strings for options that seem to be most distant in the past.
+ */
+static const char *const v4opt_names[32] = {
+	[ 1] = "nop",
+	[ 2] = "security",     /* RFC 1108 */
+	[ 3] = "lsrr",         /* RFC 791 */
+	[ 4] = "timestamp",    /* RFC 781, 791 */
+	[ 7] = "record-route", /* RFC 791 */
+	[ 9] = "ssrr",         /* RFC 791 */
+	[11] = "mtu-probe",    /* RFC 1063 */
+	[12] = "mtu-reply",    /* RFC 1063 */
+	[18] = "traceroute",   /* RFC 1393 */
+	[20] = "router-alert", /* RFC 2113 */
+};
+
+static void ipv4options_mt_help(void)
+{
+	printf(
+"ipv4options match options:\n"
+"--flags [!]symbol[,...]    Match presence/absence (!) of option\n"
+"                           (either by name or number)\n"
+"--any                      Interpret --flags as OR-combined\n\n");
+}
+
+static const struct option ipv4options_mt_opts[] = {
+	{.name = "flags", .has_arg = true,  .val = 'f'},
+	{.name = "any",   .has_arg = false, .val = 'a'},
+	{NULL},
+};
+
+static void ipv4options_parse_flagspec(struct xt_ipv4options_mtinfo1 *info,
+    char *arg)
+{
+	unsigned int i, opt;
+	bool inv;
+	char *p;
+
+	while (true) {
+		p = strchr(arg, ',');
+		if (p != NULL)
+			*p = '\0';
+
+		inv = false;
+		opt = 0;
+		if (*arg == '!') {
+			inv = true;
+			++arg;
+		}
+
+		for (i = 1; i < 32;++i)
+			if (v4opt_names[i] != NULL &&
+			    strcmp(v4opt_names[i], arg) == 0) {
+				opt = i;
+				break;
+			}
+
+		if (opt == 0 &&
+		    !xtables_strtoui(arg, NULL, &opt, 0, UINT8_MAX))
+			xtables_error(PARAMETER_PROBLEM,
+				"ipv4options: Bad option value \"%s\"", arg);
+
+		if (opt == 0)
+			xtables_error(PARAMETER_PROBLEM,
+				"ipv4options: Option value may not be zero");
+
+		info->map |= (1 << opt);
+		if (inv)
+			info->invert |= (1 << opt);
+		if (p == NULL)
+			break;
+		arg = p + 1;
+	}
+}
+
+static int ipv4options_mt_parse(int c, char **argv, int invert,
+    unsigned int *flags, const void *entry, struct xt_entry_match **match)
+{
+	struct xt_ipv4options_mtinfo1 *info = (void *)(*match)->data;
+
+	switch (c) {
+	case 'a': /* --any */
+		xtables_param_act(XTF_NO_INVERT, "ipv4options", "--any", invert);
+		info->flags |= XT_V4OPTS_ANY;
+		return true;
+	case 'f': /* --flags */
+		xtables_param_act(XTF_NO_INVERT, "ipv4options", "--flags", invert);
+		ipv4options_parse_flagspec(info, optarg);
+		return true;
+	}
+
+	return false;
+}
+
+/* no checking of *flags - no IPv4 options is also valid */
+
+static void ipv4options_print_flags(const struct xt_ipv4options_mtinfo1 *info,
+    bool numeric)
+{
+	uint32_t tmp = info->map;
+	unsigned int i;
+
+	for (i = 1; i < 32; ++i)
+		if (tmp & (1 << i)) {
+			if (info->invert & (1 << i))
+				printf("!");
+			if (!numeric && v4opt_names[i] != NULL)
+				printf("%s", v4opt_names[i]);
+			else
+				printf("%u", i);
+			tmp &= ~(1 << i);
+			if (tmp)
+				printf(",");
+		}
+}
+
+static void ipv4options_mt_print(const void *ip,
+    const struct xt_entry_match *match, int numeric)
+{
+	const struct xt_ipv4options_mtinfo1 *info = (void *)match->data;
+
+	printf("ipv4options %s ",
+	       (info->flags & XT_V4OPTS_ANY) ? "any-of" : "all-of");
+	ipv4options_print_flags(info, numeric);
+	printf(" ");
+}
+
+static void ipv4options_mt_save(const void *ip,
+    const struct xt_entry_match *match)
+{
+	const struct xt_ipv4options_mtinfo1 *info = (void *)match->data;
+
+	if (info->map != 0) {
+		printf("--flags ");
+		ipv4options_print_flags(info, true);
+	}
+	if (info->flags & XT_V4OPTS_ANY)
+		printf(" --any");
+	printf(" ");
+}
+
+static struct xtables_match ipv4options_mt_reg = {
+	.version       = XTABLES_VERSION,
+	.name          = "ipv4options",
+	.revision      = 1,
+	.family        = PF_INET,
+	.size          = XT_ALIGN(sizeof(struct xt_ipv4options_mtinfo1)),
+	.userspacesize = XT_ALIGN(sizeof(struct xt_ipv4options_mtinfo1)),
+	.help          = ipv4options_mt_help,
+	.parse         = ipv4options_mt_parse,
+	.print         = ipv4options_mt_print,
+	.save          = ipv4options_mt_save,
+	.extra_opts    = ipv4options_mt_opts,
+};
+
+static __attribute__((constructor)) void ipv4options_mt_ldr(void)
+{
+	xtables_register_match(&ipv4options_mt_reg);
+}

extensions/libxt_ipv4options.man

@@ -0,0 +1,47 @@
+The "ipv4options" module allows to match against a set of IPv4 header options.
+.TP
+\fB\-\-flags\fP [\fB!\fP]\fIsymbol\fP[\fB,\fP[\fB!\fP]\fIsymbol...\fP]
+Specify the options that shall appear or not appear in the header. Each
+symbol specification is delimited by a comma, and a '!' can be prefixed to
+a symbol to negate its presence. Symbols are either the name of an IPv4 option
+or its number. See examples below.
+.TP
+\fB\-\-any\fP
+By default, all of the flags specified must be present/absent, that is, they
+form an AND condition. Use the \-\-any flag instead to use an OR condition
+where only at least one symbol spec must be true.
+.PP
+Known symbol names (and their number):
+.PP
+1 - \fBnop\fP
+.PP
+2 - \fBsecurity\fP - RFC 1108
+.PP
+3 - \fBlsrr\fP - Loose Source Routing, RFC 791
+.PP
+4 - \fBtimestamp\fP - RFC 781, 791
+.PP
+7 - \fBrecord\-route\fP - RFC 791
+.PP
+9 - \fBssrr\fP - Strict Source Routing, RFC 791
+.PP
+11 - \fBmtu\-probe\fP - RFC 1063
+.PP
+12 - \fBmtu\-reply\fP - RFC 1063
+.PP
+18 - \fBtraceroute\fP - RFC 1393
+.PP
+20 - \fBrouter-alert\fP - RFC 2113
+.PP
+Examples:
+.PP
+Match packets that have both Timestamp and NOP:
+\-m ipv4options \-\-flags nop,timestamp
+.PP
+~ that have either of Timestamp or NOP, or both:
+\-\-flags nop,timestamp \-\-any
+.PP
+~ that have Timestamp and no NOP: \-\-flags '!nop,timestamp'
+.PP
+~ that have either no NOP or a timestamp (or both conditions):
+\-\-flags '!nop,timestamp' \-\-any

extensions/libxt_length2.c

@@ -52,42 +52,42 @@ static int length_mt_parse(int c, char **argv, int invert, unsigned int *flags,
 
 	switch (c) {
 	case '3': /* --layer3 */
-		param_act(P_ONLY_ONCE, "length", "--layer*", *flags & F_LAYER);
+		xtables_param_act(XTF_ONLY_ONCE, "length", "--layer*", *flags & F_LAYER);
 		info->flags &= ~XT_LENGTH_LAYER_MASK;
 		info->flags |= XT_LENGTH_LAYER3;
 		*flags |= F_LAYER;
 		return true;
 	case '4': /* --layer4 */
-		param_act(P_ONLY_ONCE, "length", "--layer*", *flags & F_LAYER);
+		xtables_param_act(XTF_ONLY_ONCE, "length", "--layer*", *flags & F_LAYER);
 		info->flags &= ~XT_LENGTH_LAYER_MASK;
 		info->flags |= XT_LENGTH_LAYER4;
 		*flags |= F_LAYER;
 		return true;
 	case '5': /* --layer5 */
-		param_act(P_ONLY_ONCE, "length", "--layer*", *flags & F_LAYER);
+		xtables_param_act(XTF_ONLY_ONCE, "length", "--layer*", *flags & F_LAYER);
 		info->flags &= ~XT_LENGTH_LAYER_MASK;
 		info->flags |= XT_LENGTH_LAYER5;
 		*flags |= F_LAYER;
 		return true;
 	case '7': /* --layer7 */
-		param_act(P_ONLY_ONCE, "length", "--layer*", *flags & F_LAYER);
+		xtables_param_act(XTF_ONLY_ONCE, "length", "--layer*", *flags & F_LAYER);
 		info->flags &= ~XT_LENGTH_LAYER_MASK;
 		info->flags |= XT_LENGTH_LAYER7;
 		*flags |= F_LAYER;
 		return true;
 	case '=': /* --length */
-		param_act(P_ONLY_ONCE, "length", "--length", *flags & F_LENGTH);
+		xtables_param_act(XTF_ONLY_ONCE, "length", "--length", *flags & F_LENGTH);
 		if (invert)
 			info->flags |= XT_LENGTH_INVERT;
-		if (!strtonum(optarg, &end, &from, 0, ~0U))
-			param_act(P_BAD_VALUE, "length", "--length", optarg);
+		if (!xtables_strtoui(optarg, &end, &from, 0, ~0U))
+			xtables_param_act(XTF_BAD_VALUE, "length", "--length", optarg);
 		to = from;
 		if (*end == ':')
-			if (!strtonum(end + 1, &end, &to, 0, ~0U))
-				param_act(P_BAD_VALUE, "length",
+			if (!xtables_strtoui(end + 1, &end, &to, 0, ~0U))
+				xtables_param_act(XTF_BAD_VALUE, "length",
 				          "--length", optarg);
 		if (*end != '\0')
-			param_act(P_BAD_VALUE, "length", "--length", optarg);
+			xtables_param_act(XTF_BAD_VALUE, "length", "--length", optarg);
 		info->min = from;
 		info->max = to;
 		*flags |= F_LENGTH;
@@ -99,7 +99,7 @@ static int length_mt_parse(int c, char **argv, int invert, unsigned int *flags,
 static void length_mt_check(unsigned int flags)
 {
 	if (!(flags & F_LENGTH))
-		exit_error(PARAMETER_PROBLEM,
+		xtables_error(PARAMETER_PROBLEM,
 		           "length: You must specify \"--length\"");
 	if (!(flags & F_LAYER))
 		fprintf(stderr, "iptables: length match: Defaulting to "

extensions/libxt_quota2.c

@@ -51,31 +51,31 @@ quota_mt2_parse(int c, char **argv, int invert, unsigned int *flags,
 
 	switch (c) {
 	case 'g':
-		param_act(P_ONLY_ONCE, "quota", "--grow", *flags & FL_GROW);
-		param_act(P_NO_INVERT, "quota", "--grow", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "quota", "--grow", *flags & FL_GROW);
+		xtables_param_act(XTF_NO_INVERT, "quota", "--grow", invert);
 		info->flags |= XT_QUOTA_GROW;
 		*flags |= FL_GROW;
 		return true;
 	case 'n':
 		/* zero termination done on behalf of the kernel module */
-		param_act(P_ONLY_ONCE, "quota", "--name", *flags & FL_NAME);
-		param_act(P_NO_INVERT, "quota", "--name", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "quota", "--name", *flags & FL_NAME);
+		xtables_param_act(XTF_NO_INVERT, "quota", "--name", invert);
 		strncpy(info->name, optarg, sizeof(info->name));
 		*flags |= FL_NAME;
 		return true;
 	case 'p':
-		param_act(P_ONLY_ONCE, "quota", "--packets", *flags & FL_PACKET);
-		param_act(P_NO_INVERT, "quota", "--packets", invert);
+		xtables_param_act(XTF_ONLY_ONCE, "quota", "--packets", *flags & FL_PACKET);
+		xtables_param_act(XTF_NO_INVERT, "quota", "--packets", invert);
 		info->flags |= XT_QUOTA_PACKET;
 		*flags |= FL_PACKET;
 		return true;
 	case 'q':
-		param_act(P_ONLY_ONCE, "quota", "--quota", *flags & FL_QUOTA);
+		xtables_param_act(XTF_ONLY_ONCE, "quota", "--quota", *flags & FL_QUOTA);
 		if (invert)
 			info->flags |= XT_QUOTA_INVERT;
 		info->quota = strtoull(optarg, &end, 0);
 		if (*end != '\0')
-			exit_error(PARAMETER_PROBLEM, "quota match: "
+			xtables_error(PARAMETER_PROBLEM, "quota match: "
 			           "invalid value for --quota");
 		*flags |= FL_QUOTA;
 		return true;

extensions/mac.c

@@ -19,7 +19,7 @@ static bool mac_parse(const char *addr, unsigned char *dest, uint8_t *mask)
 
 	*mask = 48;
 	if (*end == '/') {
-		if (!strtonum(end + 1, &end, &value, 0, 48))
+		if (!xtables_strtoui(end + 1, &end, &value, 0, 48))
 			return false;
 		if (*end != '\0')
 			return false;

extensions/xt_ipv4options.c

@@ -0,0 +1,72 @@
+/*
+ *	xt_ipv4opts - Netfilter module to match IPv4 options
+ *	Copyright © Jan Engelhardt, 2009
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License; either
+ *	version 2 of the License, or any later version, as published by the
+ *	Free Software Foundation.
+ */
+#include <linux/ip.h>
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/netfilter/x_tables.h>
+#include <net/ip.h>
+#include "xt_ipv4options.h"
+#include "compat_xtables.h"
+
+static uint32_t ipv4options_rd(const uint8_t *data, int len)
+{
+	uint32_t opts = 0;
+
+	while (len >= 2) {
+		opts |= 1 << (data[0] & 0x1F);
+		len  -= data[1];
+		data += data[1];
+	}
+
+	return opts;
+}
+
+static bool ipv4options_mt(const struct sk_buff *skb,
+    const struct xt_match_param *par)
+{
+	const struct xt_ipv4options_mtinfo1 *info = par->matchinfo;
+	const struct iphdr *iph = ip_hdr(skb);
+	uint32_t opts = 0;
+	uint16_t len  = ip_hdrlen(skb) - sizeof(struct iphdr);
+
+	if (len > 0)
+		opts = ipv4options_rd((const void *)iph +
+		       sizeof(struct iphdr), len);
+
+	opts ^= info->invert;
+	opts &= info->map;
+	return (info->flags & XT_V4OPTS_ANY) ? opts : opts == info->map;
+}
+
+static struct xt_match ipv4options_mt_reg __read_mostly = {
+	.name      = "ipv4options",
+	.revision  = 1,
+	.family    = NFPROTO_IPV4,
+	.match     = ipv4options_mt,
+	.matchsize = XT_ALIGN(sizeof(struct xt_ipv4options_mtinfo1)),
+	.me        = THIS_MODULE,
+};
+
+static int __init ipv4options_mt_init(void)
+{
+	return xt_register_match(&ipv4options_mt_reg);
+}
+
+static void __exit ipv4options_mt_exit(void)
+{
+	xt_unregister_match(&ipv4options_mt_reg);
+}
+
+MODULE_DESCRIPTION("Xatblse: IPv4 option match");
+MODULE_AUTHOR("Jan Engelhardt <jengelh@medozas.de>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("ipt_ipv4options");
+module_init(ipv4options_mt_init);
+module_exit(ipv4options_mt_exit);

extensions/xt_ipv4options.h

@@ -0,0 +1,26 @@
+#ifndef _LINUX_NETFILTER_XT_IPV4OPTIONS_H
+#define _LINUX_NETFILTER_XT_IPV4OPTIONS_H 1
+
+/* IPv4 allows for a 5-bit option number - 32 options */
+
+/**
+ * %XT_V4OPTS_ALL:	all options in @map must be present (respecting @invert)
+ * %XT_V4OPTS_ANY:	any of the option in @map
+ */
+enum xt_ipv4options_flags {
+	XT_V4OPTS_ALL = 1 << 0,
+	XT_V4OPTS_ANY = 1 << 1,
+};
+
+/**
+ * @map:	bitmask of options that should appear
+ * @invert:	inversion map
+ * @flags:	see above
+ */
+struct xt_ipv4options_mtinfo1 {
+	__u32 map;
+	__u32 invert;
+	__u8 flags;
+};
+
+#endif /* _LINUX_NETFILTER_XT_IPV4OPTIONS_H */

mconfig

@@ -14,6 +14,7 @@ build_fuzzy=m
 build_geoip=m
 build_ipp2p=m
 build_ipset=m
+build_ipv4options=m
 build_length2=m
 build_lscan=m
 build_quota2=m

xtables-addons.8.in

@@ -1,4 +1,4 @@
-.TH xtables\-addons 8 "v1.12 (2009\-03\-07)" "" "v1.12 (2009\-03\-07)"
+.TH xtables\-addons 8 "v1.12 (2009\-03\-23)" "" "v1.13 (2009\-03\-23)"
 .SH Name
 Xtables\-addons - additional extensions for iptables, ip6tables, etc.
 .SH Targets