diff options
Diffstat (limited to 'extensions/libnetfilter_conntrack_icmp.c')
| -rw-r--r-- | extensions/libnetfilter_conntrack_icmp.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/extensions/libnetfilter_conntrack_icmp.c b/extensions/libnetfilter_conntrack_icmp.c index a6cfe77..a69f43d 100644 --- a/extensions/libnetfilter_conntrack_icmp.c +++ b/extensions/libnetfilter_conntrack_icmp.c @@ -15,6 +15,7 @@ #include <libnetfilter_conntrack/linux_nfnetlink_conntrack.h> #include <libnetfilter_conntrack/libnetfilter_conntrack.h> #include <libnetfilter_conntrack/libnetfilter_conntrack_extensions.h> +#include <libnetfilter_conntrack/libnetfilter_conntrack_icmp.h> static void parse_proto(struct nfattr *cda[], struct nfct_tuple *tuple) { @@ -51,12 +52,35 @@ static int print_proto(char *buf, struct nfct_tuple *t) ntohs(t->l4src.icmp.id))); } +static int compare(struct nfct_conntrack *ct1, + struct nfct_conntrack *ct2, + unsigned int flags) +{ + int ret = 1; + + if (flags & ICMP_TYPE) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.type != + ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.type) + ret = 0; + if (flags & ICMP_CODE) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.code != + ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.code) + ret = 0; + if (flags & ICMP_ID) + if (ct1->tuple[NFCT_DIR_REPLY].l4src.icmp.id != + ct2->tuple[NFCT_DIR_REPLY].l4src.icmp.id) + ret = 0; + + return ret; +} + static struct nfct_proto icmp = { .name = "icmp", .protonum = IPPROTO_ICMP, .parse_proto = parse_proto, .build_tuple_proto = build_tuple_proto, .print_proto = print_proto, + .compare = compare, .version = VERSION }; |