From 6ffe4d11e701cf080302d133864cef0980f4d85b Mon Sep 17 00:00:00 2001 From: "/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org" Date: Sun, 9 Dec 2007 17:28:26 +0000 Subject: add examples on how to add a new related conntrack --- utils/conntrack_master.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 utils/conntrack_master.c (limited to 'utils/conntrack_master.c') diff --git a/utils/conntrack_master.c b/utils/conntrack_master.c new file mode 100644 index 0000000..4318942 --- /dev/null +++ b/utils/conntrack_master.c @@ -0,0 +1,93 @@ +#include +#include +#include + +#include +#include + +int main() +{ + int ret; + struct nfct_handle *h; + struct nf_conntrack *ct, *master, *expected; + + /* create master conntrack */ + ct = nfct_new(); + if (!ct) { + perror("nfct_new"); + return 0; + } + + nfct_set_attr_u8(ct, ATTR_L3PROTO, AF_INET); + nfct_set_attr_u32(ct, ATTR_IPV4_SRC, inet_addr("1.1.1.1")); + nfct_set_attr_u32(ct, ATTR_IPV4_DST, inet_addr("2.2.2.2")); + + nfct_set_attr_u8(ct, ATTR_L4PROTO, IPPROTO_TCP); + nfct_set_attr_u16(ct, ATTR_PORT_SRC, htons(20)); + nfct_set_attr_u16(ct, ATTR_PORT_DST, htons(10)); + + nfct_setobjopt(ct, NFCT_SOPT_SETUP_REPLY); + + nfct_set_attr_u8(ct, ATTR_TCP_STATE, TCP_CONNTRACK_LISTEN); + nfct_set_attr_u32(ct, ATTR_TIMEOUT, 100); + + h = nfct_open(CONNTRACK, 0); + if (!h) { + perror("nfct_open"); + return -1; + } + + ret = nfct_query(h, NFCT_Q_CREATE, ct); + + printf("TEST: create conntrack (%d)(%s)\n", ret, strerror(errno)); + + if (ret == -1) + exit(EXIT_FAILURE); + + /* setup confirmed conntrack */ + + expected = nfct_new(); + if (!expected) { + perror("nfct_new"); + return 0; + } + + nfct_set_attr_u8(ct, ATTR_L3PROTO, AF_INET); + nfct_set_attr_u32(ct, ATTR_IPV4_SRC, inet_addr("1.1.1.1")); + nfct_set_attr_u32(ct, ATTR_IPV4_DST, inet_addr("2.2.2.2")); + + nfct_set_attr_u8(ct, ATTR_L4PROTO, IPPROTO_TCP); + nfct_set_attr_u16(ct, ATTR_PORT_SRC, htons(1024)); + nfct_set_attr_u16(ct, ATTR_PORT_DST, htons(1025)); + + nfct_setobjopt(ct, NFCT_SOPT_SETUP_REPLY); + + nfct_set_attr_u8(ct, ATTR_TCP_STATE, TCP_CONNTRACK_LISTEN); + nfct_set_attr_u32(ct, ATTR_TIMEOUT, 100); + + /* my conntrack master is ... */ + + master = nfct_new(); + if (!master) { + perror("nfct_new"); + return 0; + } + + nfct_set_attr_u8(ct, ATTR_MASTER_L3PROTO, AF_INET); + nfct_set_attr_u32(ct, ATTR_MASTER_IPV4_SRC, inet_addr("1.1.1.1")); + nfct_set_attr_u32(ct, ATTR_MASTER_IPV4_DST, inet_addr("2.2.2.2")); + + nfct_set_attr_u8(ct, ATTR_MASTER_L4PROTO, IPPROTO_TCP); + nfct_set_attr_u16(ct, ATTR_MASTER_PORT_SRC, htons(20)); + nfct_set_attr_u16(ct, ATTR_MASTER_PORT_DST, htons(10)); + + ret = nfct_query(h, NFCT_Q_CREATE, ct); + + printf("TEST: create confirmed conntrack (%d)(%s)\n", + ret, strerror(errno)); + + if (ret == -1) + exit(EXIT_FAILURE); + + nfct_close(h); +} -- cgit v1.2.3