diff options
Diffstat (limited to 'extensions/libnetfilter_conntrack_tcp.c')
| -rw-r--r-- | extensions/libnetfilter_conntrack_tcp.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/extensions/libnetfilter_conntrack_tcp.c b/extensions/libnetfilter_conntrack_tcp.c index 95503ec..dc50315 100644 --- a/extensions/libnetfilter_conntrack_tcp.c +++ b/extensions/libnetfilter_conntrack_tcp.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_tcp.h> static const char *states[] = { "NONE", @@ -93,6 +94,35 @@ static int print_proto(char *buf, struct nfct_tuple *tuple) htons(tuple->l4dst.tcp.port))); } +static int compare(struct nfct_conntrack *ct1, + struct nfct_conntrack *ct2, + unsigned int flags) +{ + int ret = 1; + + if (flags & TCP_ORIG_SPORT) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4src.tcp.port != + ct2->tuple[NFCT_DIR_ORIGINAL].l4src.tcp.port) + ret = 0; + if (flags & TCP_ORIG_DPORT) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.tcp.port != + ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.tcp.port) + ret = 0; + if (flags & TCP_REPL_SPORT) + if (ct1->tuple[NFCT_DIR_REPLY].l4src.tcp.port != + ct2->tuple[NFCT_DIR_REPLY].l4src.tcp.port) + ret = 0; + if (flags & TCP_REPL_DPORT) + if (ct1->tuple[NFCT_DIR_REPLY].l4dst.tcp.port != + ct2->tuple[NFCT_DIR_REPLY].l4dst.tcp.port) + ret = 0; + if (flags & TCP_STATE) + if (ct1->protoinfo.tcp.state != ct2->protoinfo.tcp.state) + ret = 0; + + return ret; +} + static struct nfct_proto tcp = { .name = "tcp", .protonum = IPPROTO_TCP, @@ -102,6 +132,7 @@ static struct nfct_proto tcp = { .build_protoinfo = build_protoinfo, .print_protoinfo = print_protoinfo, .print_proto = print_proto, + .compare = compare, .version = VERSION }; |