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implemented query_sa() for PFKEYv2

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This commit is contained in:
Andreas Steffen
2009-08-02 11:46:33 +02:00
parent 47eb87d437
commit f35f229fd6
1 changed files with 53 additions and 2 deletions
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src/charon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c
+53 -2
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@@ -1495,7 +1495,56 @@ static status_t query_sa(private_kernel_pfkey_ipsec_t *this, host_t *src,
host_t *dst, u_int32_t spi, protocol_id_t protocol,
u_int64_t *bytes)
{
return NOT_SUPPORTED; /* TODO */
unsigned char request[PFKEY_BUFFER_SIZE];
struct sadb_msg *msg, *out;
struct sadb_sa *sa;
pfkey_msg_t response;
size_t len;
memset(&request, 0, sizeof(request));
DBG2(DBG_KNL, "querying SAD entry with SPI %.8x", ntohl(spi));
msg = (struct sadb_msg*)request;
msg->sadb_msg_version = PF_KEY_V2;
msg->sadb_msg_type = SADB_GET;
msg->sadb_msg_satype = proto_ike2satype(protocol);
msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
sa->sadb_sa_exttype = SADB_EXT_SA;
sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa));
sa->sadb_sa_spi = spi;
PFKEY_EXT_ADD(msg, sa);
/* the Linux Kernel doesn't care for the src address, but other systems do
* (e.g. FreeBSD)
*/
add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
if (pfkey_send(this, msg, &out, &len) != SUCCESS)
{
DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x", ntohl(spi));
return FAILED;
}
else if (out->sadb_msg_errno)
{
DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: %s (%d)",
ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
free(out);
return FAILED;
}
else if (parse_pfkey_message(out, &response) != SUCCESS)
{
DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x", ntohl(spi));
free(out);
return FAILED;
}
*bytes = response.lft_current->sadb_lifetime_bytes;
free(out);
return SUCCESS;
}
/**
@@ -1526,7 +1575,9 @@ static status_t del_sa(private_kernel_pfkey_ipsec_t *this, host_t *src,
sa->sadb_sa_spi = spi;
PFKEY_EXT_ADD(msg, sa);
/* the Linux Kernel doesn't care for the src address, but other systems do (e.g. FreeBSD) */
/* the Linux Kernel doesn't care for the src address, but other systems do
* (e.g. FreeBSD)
*/
add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);