X-Git-Url: http://git.archive.openwrt.org/?p=project%2Ffirewall3.git;a=blobdiff_plain;f=options.c;h=0a796a4fe2920d049779cb35b62c416d2e5de9e2;hp=0cd90680efa707e930ab0276eb2d6b582e9d15bf;hb=91953d6a6e90df988f442f53097bd208784a295d;hpb=6b27a6665c288937eb5028063064e3350dcab545

diff --git a/options.c b/options.c
index 0cd9068..0a796a4 100644
--- a/options.c
+++ b/options.c
@@ -1,7 +1,7 @@
 /*
  * firewall3 - 3rd OpenWrt UCI firewall implementation
  *
- *   Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
+ *   Copyright (C) 2013-2014 Jo-Philipp Wich <jow@openwrt.org>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -78,6 +78,7 @@ const char *fw3_flag_names[__FW3_FLAG_MAX] = {
 	"MARK",
 	"DNAT",
 	"SNAT",
+	"MASQUERADE",
 
 	"ACCEPT",
 	"REJECT",
@@ -142,9 +143,10 @@ fw3_parse_bool(void *ptr, const char *val, bool is_list)
 bool
 fw3_parse_int(void *ptr, const char *val, bool is_list)
 {
-	int n = strtol(val, NULL, 0);
+	char *e;
+	int n = strtol(val, &e, 0);
 
-	if (errno == ERANGE || errno == EINVAL)
+	if (e == val || *e)
 		return false;
 
 	*((int *)ptr) = n;
@@ -163,7 +165,7 @@ bool
 fw3_parse_target(void *ptr, const char *val, bool is_list)
 {
 	return parse_enum(ptr, val, &fw3_flag_names[FW3_FLAG_ACCEPT],
-	                  FW3_FLAG_ACCEPT, FW3_FLAG_SNAT);
+	                  FW3_FLAG_ACCEPT, FW3_FLAG_MASQUERADE);
 }
 
 bool
@@ -242,8 +244,8 @@ fw3_parse_address(void *ptr, const char *val, bool is_list)
 	struct fw3_address addr = { };
 	struct in_addr v4;
 	struct in6_addr v6;
-	char *p, *s, *e;
-	int i, m = -1;
+	char *p = NULL, *m = NULL, *s, *e;
+	int bits = -1;
 
 	if (*val == '!')
 	{
@@ -256,98 +258,114 @@ fw3_parse_address(void *ptr, const char *val, bool is_list)
 	if (!s)
 		return false;
 
-	if ((p = strchr(s, '/')) != NULL)
-	{
+	if ((m = strchr(s, '/')) != NULL)
+		*m++ = 0;
+	else if ((p = strchr(s, '-')) != NULL)
 		*p++ = 0;
-		m = strtoul(p, &e, 10);
 
-		if ((e == p) || (*e != 0))
+	if (inet_pton(AF_INET6, s, &v6))
+	{
+		addr.family = FW3_FAMILY_V6;
+		addr.address.v6 = v6;
+
+		if (m)
 		{
-			if (strchr(s, ':') || !inet_pton(AF_INET, p, &v4))
+			if (!inet_pton(AF_INET6, m, &v6))
 			{
-				free(s);
-				return false;
-			}
+				bits = strtol(m, &e, 10);
 
-			for (i = 0, m = 32; !(v4.s_addr & 1) && (i < 32); i++)
-			{
-				m--;
-				v4.s_addr >>= 1;
+				if ((*e != 0) || !fw3_bitlen2netmask(addr.family, bits, &v6))
+					goto fail;
 			}
-		}
-	}
-	else if ((p = strchr(s, '-')) != NULL)
-	{
-		*p++ = 0;
 
-		if (inet_pton(AF_INET6, p, &v6))
-		{
-			addr.family = FW3_FAMILY_V6;
-			addr.address2.v6 = v6;
-			addr.range = true;
+			addr.mask.v6 = v6;
 		}
-		else if (inet_pton(AF_INET, p, &v4))
+		else if (p)
 		{
-			addr.family = FW3_FAMILY_V4;
-			addr.address2.v4 = v4;
+			if (!inet_pton(AF_INET6, p, &addr.mask.v6))
+				goto fail;
+
 			addr.range = true;
 		}
 		else
 		{
-			free(s);
-			return false;
+			memset(addr.mask.v6.s6_addr, 0xFF, 16);
 		}
 	}
-
-	if (inet_pton(AF_INET6, s, &v6))
-	{
-		addr.family = FW3_FAMILY_V6;
-		addr.address.v6 = v6;
-		addr.mask = (m >= 0) ? m : 128;
-	}
 	else if (inet_pton(AF_INET, s, &v4))
 	{
 		addr.family = FW3_FAMILY_V4;
 		addr.address.v4 = v4;
-		addr.mask = (m >= 0) ? m : 32;
+
+		if (m)
+		{
+			if (!inet_pton(AF_INET, m, &v4))
+			{
+				bits = strtol(m, &e, 10);
+
+				if ((*e != 0) || !fw3_bitlen2netmask(addr.family, bits, &v4))
+					goto fail;
+			}
+
+			addr.mask.v4 = v4;
+		}
+		else if (p)
+		{
+			if (!inet_pton(AF_INET, p, &addr.mask.v4))
+				goto fail;
+
+			addr.range = true;
+		}
+		else
+		{
+			addr.mask.v4.s_addr = 0xFFFFFFFF;
+		}
 	}
 	else
 	{
-		free(s);
-		return false;
+		goto fail;
 	}
 
 	free(s);
 	addr.set = true;
 	put_value(ptr, &addr, sizeof(addr), is_list);
 	return true;
+
+fail:
+	free(s);
+	return false;
 }
 
 bool
 fw3_parse_network(void *ptr, const char *val, bool is_list)
 {
 	struct fw3_device dev = { };
-	struct fw3_address *addr;
-	struct list_head *addr_list;
+	struct fw3_address *addr, *tmp;
+	LIST_HEAD(addr_list);
 
 	if (!fw3_parse_address(ptr, val, is_list))
 	{
 		if (!fw3_parse_device(&dev, val, false))
 			return false;
 
-		addr_list = fw3_ubus_address(dev.name);
-
-		if (addr_list)
+		fw3_ubus_address(&addr_list, dev.name);
+		list_for_each_entry(addr, &addr_list, list)
 		{
-			list_for_each_entry(addr, addr_list, list)
-			{
-				addr->invert = dev.invert;
+			addr->invert = dev.invert;
+			addr->resolved = true;
+		}
 
-				if (!put_value(ptr, addr, sizeof(*addr), is_list))
-					break;
-			}
+		if (is_list)
+		{
+			list_splice_tail(&addr_list, ptr);
+		}
+		else if (!list_empty(&addr_list))
+		{
+			memcpy(ptr, list_first_entry(&addr_list, typeof(*addr), list),
+			       sizeof(*addr));
 
-			fw3_ubus_address_free(addr_list);
+			list_for_each_entry_safe(addr, tmp, &addr_list, list)
+				free(addr);
 		}
 	}
 
@@ -517,6 +535,7 @@ fw3_parse_protocol(void *ptr, const char *val, bool is_list)
 {
 	struct fw3_protocol proto = { };
 	struct protoent *ent;
+	char *e;
 
 	if (*val == '!')
 	{
@@ -555,9 +574,9 @@ fw3_parse_protocol(void *ptr, const char *val, bool is_list)
 		return true;
 	}
 
-	proto.protocol = strtoul(val, NULL, 10);
+	proto.protocol = strtoul(val, &e, 10);
 
-	if (errno == ERANGE || errno == EINVAL)
+	if ((e == val) || (*e != 0))
 		return false;
 
 	put_value(ptr, &proto, sizeof(proto), is_list);
@@ -576,20 +595,22 @@ fw3_parse_ipset_datatype(void *ptr, const char *val, bool is_list)
 {
 	struct fw3_ipset_datatype type = { };
 
+	type.dir = "src";
+
 	if (!strncmp(val, "dest_", 5))
 	{
 		val += 5;
-		type.dest = true;
+		type.dir = "dst";
 	}
 	else if (!strncmp(val, "dst_", 4))
 	{
 		val += 4;
-		type.dest = true;
+		type.dir = "dst";
 	}
 	else if (!strncmp(val, "src_", 4))
 	{
 		val += 4;
-		type.dest = false;
+		type.dir = "src";
 	}
 
 	if (parse_enum(&type.type, val, &fw3_ipset_type_names[FW3_IPSET_TYPE_IP],
@@ -808,8 +829,64 @@ fw3_parse_mark(void *ptr, const char *val, bool is_list)
 	return true;
 }
 
+bool
+fw3_parse_setmatch(void *ptr, const char *val, bool is_list)
+{
+	struct fw3_setmatch *m = ptr;
+	char *p, *s;
+	int i;
+
+	if (*val == '!')
+	{
+		m->invert = true;
+		while (isspace(*++val));
+	}
 
-void
+	if (!(s = strdup(val)))
+		return false;
+
+	if (!(p = strtok(s, " \t")))
+	{
+		free(s);
+		return false;
+	}
+
+	strncpy(m->name, p, sizeof(m->name));
+
+	for (i = 0, p = strtok(NULL, " \t,");
+	     i < 3 && p != NULL;
+	     i++, p = strtok(NULL, " \t,"))
+	{
+		if (!strncmp(p, "dest", 4) || !strncmp(p, "dst", 3))
+			m->dir[i] = "dst";
+		else if (!strncmp(p, "src", 3))
+			m->dir[i] = "src";
+	}
+
+	free(s);
+
+	m->set = true;
+	return true;
+}
+
+bool
+fw3_parse_direction(void *ptr, const char *val, bool is_list)
+{
+	bool *is_out = ptr;
+	bool valid = true;
+
+	if (!strcmp(val, "in") || !strcmp(val, "ingress"))
+		*is_out = false;
+	else if (!strcmp(val, "out") || !strcmp(val, "egress"))
+		*is_out = true;
+	else
+		valid = false;
+
+	return valid;
+}
+
+
+bool
 fw3_parse_options(void *s, const struct fw3_option *opts,
                   struct uci_section *section)
 {
@@ -819,6 +896,7 @@ fw3_parse_options(void *s, const struct fw3_option *opts,
 	struct uci_option *o;
 	const struct fw3_option *opt;
 	struct list_head *dest;
+	bool valid = true;
 
 	uci_foreach_element(&section->options, e)
 	{
@@ -838,6 +916,7 @@ fw3_parse_options(void *s, const struct fw3_option *opts,
 				if (!opt->elem_size)
 				{
 					warn_elem(e, "must not be a list");
+					valid = false;
 				}
 				else
 				{
@@ -851,6 +930,7 @@ fw3_parse_options(void *s, const struct fw3_option *opts,
 						if (!opt->parse(dest, l->name, true))
 						{
 							warn_elem(e, "has invalid value '%s'", l->name);
+							valid = false;
 							continue;
 						}
 					}
@@ -866,7 +946,10 @@ fw3_parse_options(void *s, const struct fw3_option *opts,
 				if (!opt->elem_size)
 				{
 					if (!opt->parse((char *)s + opt->offset, o->v.string, false))
+					{
 						warn_elem(e, "has invalid value '%s'", o->v.string);
+						valid = false;
+					}
 				}
 				else
 				{
@@ -877,6 +960,7 @@ fw3_parse_options(void *s, const struct fw3_option *opts,
 						if (!opt->parse(dest, p, true))
 						{
 							warn_elem(e, "has invalid value '%s'", p);
+							valid = false;
 							continue;
 						}
 					}
@@ -890,318 +974,147 @@ fw3_parse_options(void *s, const struct fw3_option *opts,
 		if (!known)
 			warn_elem(e, "is unknown");
 	}
-}
-
-
-const char *
-fw3_address_to_string(struct fw3_address *address, bool allow_invert)
-{
-	char *p, ip[INET6_ADDRSTRLEN];
-	static char buf[INET6_ADDRSTRLEN * 2 + 2];
-
-	p = buf;
-
-	if (address->invert && allow_invert)
-		p += sprintf(p, "!");
-
-	inet_ntop(address->family == FW3_FAMILY_V4 ? AF_INET : AF_INET6,
-	          &address->address.v4, ip, sizeof(ip));
-
-	p += sprintf(p, "%s", ip);
-
-	if (address->range)
-	{
-		inet_ntop(address->family == FW3_FAMILY_V4 ? AF_INET : AF_INET6,
-		          &address->address2.v4, ip, sizeof(ip));
-
-		p += sprintf(p, "-%s", ip);
-	}
-	else
-	{
-		p += sprintf(p, "/%u", address->mask);
-	}
 
-	return buf;
+	return valid;
 }
 
-void
-fw3_format_src_dest(struct fw3_address *src, struct fw3_address *dest)
-{
-	if ((src && src->range) || (dest && dest->range))
-		fw3_pr(" -m iprange");
 
-	if (src && src->set)
-	{
-		fw3_pr(" %s%s %s", src->invert ? "! " : "",
-		                   src->range ? "--src-range" : "-s",
-		                   fw3_address_to_string(src, false));
-	}
-
-	if (dest && dest->set)
-	{
-		fw3_pr(" %s%s %s", dest->invert ? "! " : "",
-		                   dest->range ? "--dst-range" : "-d",
-		                   fw3_address_to_string(dest, false));
-	}
-}
-
-void
-fw3_format_sport_dport(struct fw3_port *sp, struct fw3_port *dp)
+bool
+fw3_parse_blob_options(void *s, const struct fw3_option *opts,
+                  struct blob_attr *a)
 {
-	if (sp && sp->set)
-	{
-		if (sp->port_min == sp->port_max)
-			fw3_pr(" %s--sport %u", sp->invert ? "! " : "", sp->port_min);
-		else
-			fw3_pr(" %s--sport %u:%u",
-			       sp->invert ? "! " : "", sp->port_min, sp->port_max);
-	}
+	char *p, *v, buf[16];
+	bool known;
+	unsigned rem, erem;
+	struct blob_attr *o, *e;
+	const struct fw3_option *opt;
+	struct list_head *dest;
+	bool valid = true;
 
-	if (dp && dp->set)
+	blobmsg_for_each_attr(o, a, rem)
 	{
-		if (dp->port_min == dp->port_max)
-			fw3_pr(" %s--dport %u", dp->invert ? "! " : "", dp->port_min);
-		else
-			fw3_pr(" %s--dport %u:%u",
-			       dp->invert ? "! " : "", dp->port_min, dp->port_max);
-	}
-}
-
-void
-fw3_format_mac(struct fw3_mac *mac)
-{
-	if (!mac)
-		return;
-
-	fw3_pr(" -m mac %s--mac-source %s",
-	       mac->invert ? "! " : "", ether_ntoa(&mac->mac));
-}
+		known = false;
 
-void
-fw3_format_protocol(struct fw3_protocol *proto, enum fw3_family family)
-{
-	uint16_t pr;
+		for (opt = opts; opt->name; opt++)
+		{
+			if (!opt->parse)
+				continue;
 
-	if (!proto)
-		return;
+			if (strcmp(opt->name, blobmsg_name(o)))
+				continue;
 
-	pr = proto->protocol;
+			if (blobmsg_type(o) == BLOBMSG_TYPE_ARRAY)
+			{
+				if (!opt->elem_size)
+				{
+					fprintf(stderr, "%s must not be a list\n", opt->name);
+					valid = false;
+				}
+				else
+				{
+					dest = (struct list_head *)((char *)s + opt->offset);
 
-	if (pr == 1 && family == FW3_FAMILY_V6)
-		pr = 58;
+					blobmsg_for_each_attr(e, o, erem)
+					{
+						if (blobmsg_type(e) == BLOBMSG_TYPE_INT32) {
+							snprintf(buf, sizeof(buf), "%d", blobmsg_get_u32(e));
+							v = buf;
+						} else {
+							v = blobmsg_get_string(e);
+						}
 
-	if (proto->any)
-		fw3_pr(" -p all");
-	else
-		fw3_pr(" %s-p %u", proto->invert ? "! " : "", pr);
-}
+						if (!opt->parse(dest, v, true))
+						{
+							fprintf(stderr, "%s has invalid value '%s'\n", opt->name, v);
+							valid = false;
+							continue;
+						}
+					}
+				}
+			}
+			else
+			{
+				if (blobmsg_type(o) == BLOBMSG_TYPE_INT32) {
+					snprintf(buf, sizeof(buf), "%d", blobmsg_get_u32(o));
+					v = buf;
+				} else {
+					v = blobmsg_get_string(o);
+				}
 
-void
-fw3_format_icmptype(struct fw3_icmptype *icmp, enum fw3_family family)
-{
-	if (!icmp)
-		return;
+				if (!v)
+					continue;
 
-	if (family != FW3_FAMILY_V6)
-	{
-		if (icmp->code_min == 0 && icmp->code_max == 0xFF)
-			fw3_pr(" %s--icmp-type %u", icmp->invert ? "! " : "", icmp->type);
-		else
-			fw3_pr(" %s--icmp-type %u/%u",
-				   icmp->invert ? "! " : "", icmp->type, icmp->code_min);
-	}
-	else
-	{
-		if (icmp->code6_min == 0 && icmp->code6_max == 0xFF)
-			fw3_pr(" %s--icmpv6-type %u", icmp->invert ? "! " : "", icmp->type6);
-		else
-			fw3_pr(" %s--icmpv6-type %u/%u",
-				   icmp->invert ? "! " : "", icmp->type6, icmp->code6_min);
-	}
-}
+				if (!opt->elem_size)
+				{
+					if (!opt->parse((char *)s + opt->offset, v, false))
+					{
+						fprintf(stderr, "%s has invalid value '%s'\n", opt->name, v);
+						valid = false;
+					}
+				}
+				else
+				{
+					dest = (struct list_head *)((char *)s + opt->offset);
 
-void
-fw3_format_limit(struct fw3_limit *limit)
-{
-	if (!limit)
-		return;
+					for (p = strtok(v, " \t"); p != NULL; p = strtok(NULL, " \t"))
+					{
+						if (!opt->parse(dest, p, true))
+						{
+							fprintf(stderr, "%s has invalid value '%s'\n", opt->name, p);
+							valid = false;
+							continue;
+						}
+					}
+				}
+			}
 
-	if (limit->rate > 0)
-	{
-		fw3_pr(" -m limit %s--limit %u/%s",
-		       limit->invert ? "! " : "",
-		       limit->rate, fw3_limit_units[limit->unit]);
+			known = true;
+			break;
+		}
 
-		if (limit->burst > 0)
-			fw3_pr(" --limit-burst %u", limit->burst);
+		if (!known)
+			fprintf(stderr, "%s is unknown\n", blobmsg_name(o));
 	}
-}
-
-void
-fw3_format_ipset(struct fw3_ipset *ipset, bool invert)
-{
-	bool first = true;
-	const char *name = NULL;
-	struct fw3_ipset_datatype *type;
-
-	if (!ipset)
-		return;
-
-	name = ipset->external ? ipset->external : ipset->name;
 
-	fw3_pr(" -m set %s--match-set %s", invert ? "! " : "", name);
-
-	list_for_each_entry(type, &ipset->datatypes, list)
-	{
-		fw3_pr("%c%s", first ? ' ' : ',', type->dest ? "dst" : "src");
-		first = false;
-	}
+	return valid;
 }
 
-void
-fw3_format_time(struct fw3_time *time)
-{
-	int i;
-	struct tm empty = { 0 };
-	char buf[sizeof("9999-99-99T23:59:59\0")];
-	bool d1 = memcmp(&time->datestart, &empty, sizeof(empty));
-	bool d2 = memcmp(&time->datestop, &empty, sizeof(empty));
-	bool first;
-
-	if (!d1 && !d2 && !time->timestart && !time->timestop &&
-	    !(time->monthdays & 0xFFFFFFFE) && !(time->weekdays & 0xFE))
-	{
-		return;
-	}
-
-	fw3_pr(" -m time");
 
-	if (time->utc)
-		fw3_pr(" --utc");
+const char *
+fw3_address_to_string(struct fw3_address *address, bool allow_invert, bool as_cidr)
+{
+	char *p, ip[INET6_ADDRSTRLEN];
+	static char buf[INET6_ADDRSTRLEN * 2 + 2];
 
-	if (d1)
-	{
-		strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestart);
-		fw3_pr(" --datestart %s", buf);
-	}
+	p = buf;
 
-	if (d2)
-	{
-		strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", &time->datestop);
-		fw3_pr(" --datestop %s", buf);
-	}
+	if (address->invert && allow_invert)
+		p += sprintf(p, "!");
 
-	if (time->timestart)
-	{
-		fw3_pr(" --timestart %02d:%02d:%02d",
-		       time->timestart / 3600,
-		       time->timestart % 3600 / 60,
-		       time->timestart % 60);
-	}
+	inet_ntop(address->family == FW3_FAMILY_V4 ? AF_INET : AF_INET6,
+	          &address->address.v4, ip, sizeof(ip));
 
-	if (time->timestop)
-	{
-		fw3_pr(" --timestop %02d:%02d:%02d",
-		       time->timestop / 3600,
-		       time->timestop % 3600 / 60,
-		       time->timestop % 60);
-	}
+	p += sprintf(p, "%s", ip);
 
-	if (time->monthdays & 0xFFFFFFFE)
+	if (address->range)
 	{
-		fw3_pr(" %s--monthdays", hasbit(time->monthdays, 0) ? "! " : "");
+		inet_ntop(address->family == FW3_FAMILY_V4 ? AF_INET : AF_INET6,
+		          &address->mask.v4, ip, sizeof(ip));
 
-		for (i = 1, first = true; i < 32; i++)
-		{
-			if (hasbit(time->monthdays, i))
-			{
-				fw3_pr("%c%u", first ? ' ' : ',', i);
-				first = false;
-			}
-		}
+		p += sprintf(p, "-%s", ip);
 	}
-
-	if (time->weekdays & 0xFE)
+	else if (!as_cidr)
 	{
-		fw3_pr(" %s--weekdays", hasbit(time->weekdays, 0) ? "! " : "");
+		inet_ntop(address->family == FW3_FAMILY_V4 ? AF_INET : AF_INET6,
+		          &address->mask.v4, ip, sizeof(ip));
 
-		for (i = 1, first = true; i < 8; i++)
-		{
-			if (hasbit(time->weekdays, i))
-			{
-				fw3_pr("%c%u", first ? ' ' : ',', i);
-				first = false;
-			}
-		}
+		p += sprintf(p, "/%s", ip);
 	}
-}
-
-void
-fw3_format_mark(struct fw3_mark *mark)
-{
-	if (!mark->set)
-		return;
-
-	fw3_pr(" -m mark %s--mark 0x%x", mark->invert ? "! " : "", mark->mark);
-
-	if (mark->mask < 0xFFFFFFFF)
-		fw3_pr("/0x%x", mark->mask);
-}
-
-void
-__fw3_format_comment(const char *comment, ...)
-{
-	va_list ap;
-	int len = 0;
-	const char *c;
-
-	if (!comment || !*comment)
-		return;
-
-	fw3_pr(" -m comment --comment \"");
-
-	c = comment;
-
-	va_start(ap, comment);
-
-	do
+	else
 	{
-		while (*c)
-		{
-			switch (*c)
-			{
-			case '"':
-			case '$':
-			case '`':
-			case '\\':
-				fw3_pr("\\");
-				/* fall through */
-
-			default:
-				fw3_pr("%c", *c);
-				break;
-			}
-
-			c++;
-
-			if (len++ >= 255)
-				goto end;
-		}
-
-		c = va_arg(ap, const char *);
+		p += sprintf(p, "/%u", fw3_netmask2bitlen(address->family,
+		                                          &address->mask.v6));
 	}
-	while (c);
-
-end:
-	va_end(ap);
-	fw3_pr("\"");
-}
-
-void
-fw3_format_extra(const char *extra)
-{
-	if (!extra || !*extra)
-		return;
 
-	fw3_pr(" %s", extra);
+	return buf;
 }