#include <linux/ipv6.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_iprange.h>
-#include <linux/netfilter_ipv4/ipt_iprange.h>
-
-static bool
-iprange_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par)
-{
- const struct ipt_iprange_info *info = par->matchinfo;
- const struct iphdr *iph = ip_hdr(skb);
-
- if (info->flags & IPRANGE_SRC) {
- if ((ntohl(iph->saddr) < ntohl(info->src.min_ip)
- || ntohl(iph->saddr) > ntohl(info->src.max_ip))
- ^ !!(info->flags & IPRANGE_SRC_INV)) {
- pr_debug("src IP %u.%u.%u.%u NOT in range %s"
- "%u.%u.%u.%u-%u.%u.%u.%u\n",
- NIPQUAD(iph->saddr),
- info->flags & IPRANGE_SRC_INV ? "(INV) " : "",
- NIPQUAD(info->src.min_ip),
- NIPQUAD(info->src.max_ip));
- return false;
- }
- }
- if (info->flags & IPRANGE_DST) {
- if ((ntohl(iph->daddr) < ntohl(info->dst.min_ip)
- || ntohl(iph->daddr) > ntohl(info->dst.max_ip))
- ^ !!(info->flags & IPRANGE_DST_INV)) {
- pr_debug("dst IP %u.%u.%u.%u NOT in range %s"
- "%u.%u.%u.%u-%u.%u.%u.%u\n",
- NIPQUAD(iph->daddr),
- info->flags & IPRANGE_DST_INV ? "(INV) " : "",
- NIPQUAD(info->dst.min_ip),
- NIPQUAD(info->dst.max_ip));
- return false;
- }
- }
- return true;
-}
static bool
iprange_mt4(const struct sk_buff *skb, const struct xt_match_param *par)
if (info->flags & IPRANGE_SRC) {
m = ntohl(iph->saddr) < ntohl(info->src_min.ip);
m |= ntohl(iph->saddr) > ntohl(info->src_max.ip);
- m ^= info->flags & IPRANGE_SRC_INV;
+ m ^= !!(info->flags & IPRANGE_SRC_INV);
if (m) {
- pr_debug("src IP " NIPQUAD_FMT " NOT in range %s"
- NIPQUAD_FMT "-" NIPQUAD_FMT "\n",
- NIPQUAD(iph->saddr),
+ pr_debug("src IP %pI4 NOT in range %s%pI4-%pI4\n",
+ &iph->saddr,
(info->flags & IPRANGE_SRC_INV) ? "(INV) " : "",
- NIPQUAD(info->src_max.ip),
- NIPQUAD(info->src_max.ip));
+ &info->src_max.ip,
+ &info->src_max.ip);
return false;
}
}
if (info->flags & IPRANGE_DST) {
m = ntohl(iph->daddr) < ntohl(info->dst_min.ip);
m |= ntohl(iph->daddr) > ntohl(info->dst_max.ip);
- m ^= info->flags & IPRANGE_DST_INV;
+ m ^= !!(info->flags & IPRANGE_DST_INV);
if (m) {
- pr_debug("dst IP " NIPQUAD_FMT " NOT in range %s"
- NIPQUAD_FMT "-" NIPQUAD_FMT "\n",
- NIPQUAD(iph->daddr),
+ pr_debug("dst IP %pI4 NOT in range %s%pI4-%pI4\n",
+ &iph->daddr,
(info->flags & IPRANGE_DST_INV) ? "(INV) " : "",
- NIPQUAD(info->dst_min.ip),
- NIPQUAD(info->dst_max.ip));
+ &info->dst_min.ip,
+ &info->dst_max.ip);
return false;
}
}
if (info->flags & IPRANGE_SRC) {
m = iprange_ipv6_sub(&iph->saddr, &info->src_min.in6) < 0;
m |= iprange_ipv6_sub(&iph->saddr, &info->src_max.in6) > 0;
- m ^= info->flags & IPRANGE_SRC_INV;
+ m ^= !!(info->flags & IPRANGE_SRC_INV);
if (m)
return false;
}
if (info->flags & IPRANGE_DST) {
m = iprange_ipv6_sub(&iph->daddr, &info->dst_min.in6) < 0;
m |= iprange_ipv6_sub(&iph->daddr, &info->dst_max.in6) > 0;
- m ^= info->flags & IPRANGE_DST_INV;
+ m ^= !!(info->flags & IPRANGE_DST_INV);
if (m)
return false;
}
static struct xt_match iprange_mt_reg[] __read_mostly = {
{
.name = "iprange",
- .revision = 0,
- .family = NFPROTO_IPV4,
- .match = iprange_mt_v0,
- .matchsize = sizeof(struct ipt_iprange_info),
- .me = THIS_MODULE,
- },
- {
- .name = "iprange",
.revision = 1,
.family = NFPROTO_IPV4,
.match = iprange_mt4,
module_init(iprange_mt_init);
module_exit(iprange_mt_exit);
MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>, Jan Engelhardt <jengelh@computergmbh.de>");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_AUTHOR("Jan Engelhardt <jengelh@medozas.de>");
MODULE_DESCRIPTION("Xtables: arbitrary IPv4 range matching");
MODULE_ALIAS("ipt_iprange");
MODULE_ALIAS("ip6t_iprange");