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Implemented Traffic Flow Confidentiality padding in kernel_interface

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This commit is contained in:
Martin Willi
2010-12-20 09:45:39 +01:00
parent 814873a356
commit d86bb6ef4d
8 changed files with 35 additions and 13 deletions
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src/libhydra/plugins/kernel_netlink/kernel_netlink_ipsec.c
+20 -2
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@@ -866,7 +866,7 @@ METHOD(kernel_ipsec_t, get_cpi, status_t,
METHOD(kernel_ipsec_t, add_sa, status_t,
private_kernel_netlink_ipsec_t *this, host_t *src, host_t *dst,
u_int32_t spi, u_int8_t protocol, u_int32_t reqid, mark_t mark,
lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key,
u_int32_t tfc, lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key,
u_int16_t int_alg, chunk_t int_key, ipsec_mode_t mode, u_int16_t ipcomp,
u_int16_t cpi, bool encap, bool inbound,
traffic_selector_t* src_ts, traffic_selector_t* dst_ts)
@@ -882,7 +882,7 @@ METHOD(kernel_ipsec_t, add_sa, status_t,
if (ipcomp != IPCOMP_NONE && cpi != 0)
{
lifetime_cfg_t lft = {{0,0,0},{0,0,0},{0,0,0}};
add_sa(this, src, dst, htonl(ntohs(cpi)), IPPROTO_COMP, reqid, mark,
add_sa(this, src, dst, htonl(ntohs(cpi)), IPPROTO_COMP, reqid, mark, tfc,
&lft, ENCR_UNDEFINED, chunk_empty, AUTH_UNDEFINED, chunk_empty,
mode, ipcomp, 0, FALSE, inbound, NULL, NULL);
ipcomp = IPCOMP_NONE;
@@ -1154,6 +1154,24 @@ METHOD(kernel_ipsec_t, add_sa, status_t,
rthdr = XFRM_RTA_NEXT(rthdr);
}
if (tfc)
{
u_int32_t *tfcpad;
rthdr->rta_type = XFRMA_TFCPAD;
rthdr->rta_len = RTA_LENGTH(sizeof(u_int32_t));
hdr->nlmsg_len += rthdr->rta_len;
if (hdr->nlmsg_len > sizeof(request))
{
return FAILED;
}
tfcpad = (u_int32_t*)RTA_DATA(rthdr);
*tfcpad = tfc;
rthdr = XFRM_RTA_NEXT(rthdr);
}
if (this->socket_xfrm->send_ack(this->socket_xfrm, hdr) != SUCCESS)
{
if (mark.value)