diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-03-14 15:14:48 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-03-24 21:39:44 +0100 |
| commit | 89f0ea845ef570e3e9c5eb35236c85d54f4dcd52 (patch) | |
| tree | 79533dbd5e2e4a908e813cb4679cce4c0facb2ed /src/build.c | |
| parent | 3feed855a6b7c9b7d5d27231b4dd3c997eebb1ac (diff) | |
src: synproxy support
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/build.c')
| -rw-r--r-- | src/build.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/build.c b/src/build.c index 5403300..99ff230 100644 --- a/src/build.c +++ b/src/build.c @@ -107,6 +107,17 @@ ct_build_natseqadj(const struct nf_conntrack *ct, struct nethdr *n) addattr(n, NTA_NAT_SEQ_ADJ, &data, sizeof(struct nta_attr_natseqadj)); } +static inline void +ct_build_synproxy(const struct nf_conntrack *ct, struct nethdr *n) +{ + struct nta_attr_synproxy data = { + .isn = htonl(nfct_get_attr_u32(ct, ATTR_SYNPROXY_ISN)), + .its = htonl(nfct_get_attr_u32(ct, ATTR_SYNPROXY_ITS)), + .tsoff = htonl(nfct_get_attr_u32(ct, ATTR_SYNPROXY_TSOFF)), + }; + addattr(n, NTA_SYNPROXY, &data, sizeof(struct nta_attr_synproxy)); +} + static enum nf_conntrack_attr nat_type[] = { ATTR_ORIG_NAT_SEQ_CORRECTION_POS, ATTR_ORIG_NAT_SEQ_OFFSET_BEFORE, ATTR_ORIG_NAT_SEQ_OFFSET_AFTER, ATTR_REPL_NAT_SEQ_CORRECTION_POS, @@ -299,6 +310,11 @@ void ct2msg(const struct nf_conntrack *ct, struct nethdr *n) if (nfct_attr_is_set(ct, ATTR_CONNLABELS)) ct_build_clabel(ct, n); + + if (nfct_attr_is_set(ct, ATTR_SYNPROXY_ISN) && + nfct_attr_is_set(ct, ATTR_SYNPROXY_ITS) && + nfct_attr_is_set(ct, ATTR_SYNPROXY_TSOFF)) + ct_build_synproxy(ct, n); } static void |