#include <vnet/ipip/ipip.h>
#include <plugins/ikev2/ikev2.h>
#include <plugins/ikev2/ikev2_priv.h>
+#include <plugins/dns/dns.h>
#include <openssl/sha.h>
#include <vnet/ipsec/ipsec_punt.h>
+#include <plugins/ikev2/ikev2.api_enum.h>
#define IKEV2_LIVENESS_RETRIES 3
#define IKEV2_LIVENESS_PERIOD_CHECK 30
return s;
}
-#define foreach_ikev2_error \
-_(PROCESSED, "IKEv2 packets processed") \
-_(IKE_SA_INIT_RETRANSMIT, "IKE_SA_INIT retransmit ") \
-_(IKE_SA_INIT_IGNORE, "IKE_SA_INIT ignore (IKE SA already auth)") \
-_(IKE_REQ_RETRANSMIT, "IKE request retransmit") \
-_(IKE_REQ_IGNORE, "IKE request ignore (old msgid)") \
-_(NOT_IKEV2, "Non IKEv2 packets received") \
-_(BAD_LENGTH, "Bad packet length") \
-_(MALFORMED_PACKET, "Malformed packet") \
-_(NO_BUFF_SPACE, "No buffer space")
-
-typedef enum
-{
-#define _(sym,str) IKEV2_ERROR_##sym,
- foreach_ikev2_error
-#undef _
- IKEV2_N_ERROR,
-} ikev2_error_t;
-
-static char *ikev2_error_strings[] = {
-#define _(sym,string) string,
- foreach_ikev2_error
-#undef _
-};
-
typedef enum
{
IKEV2_NEXT_IP4_LOOKUP,
typedef u32 ikev2_non_esp_marker;
-static_always_inline u16
-ikev2_get_port (ikev2_sa_t * sa)
+static u16
+ikev2_get_port (ikev2_sa_t *sa)
{
return ikev2_natt_active (sa) ? IKEV2_PORT_NATT : IKEV2_PORT;
}
-static_always_inline int
-ikev2_insert_non_esp_marker (ike_header_t * ike, int len)
+static int
+ikev2_insert_non_esp_marker (ike_header_t *ike, int len)
{
memmove ((u8 *) ike + sizeof (ikev2_non_esp_marker), ike, len);
clib_memset (ike, 0, sizeof (ikev2_non_esp_marker));
rv->proposal_num = proposal->proposal_num;
rv->protocol_id = proposal->protocol_id;
RAND_bytes ((u8 *) & rv->spi, sizeof (rv->spi));
+ if (rv->protocol_id != IKEV2_PROTOCOL_IKE)
+ rv->spi &= 0xffffffff;
goto done;
}
else
RAND_bytes ((u8 *) & sa->rspi, 8);
/* generate nonce */
- sa->r_nonce = vec_new (u8, IKEV2_NONCE_SIZE);
- RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE);
+ sa->r_nonce = vec_new (u8, vec_len (sa->i_nonce));
+ RAND_bytes ((u8 *) sa->r_nonce, vec_len (sa->i_nonce));
}
/* generate dh keys */
}
static void
-ikev2_calc_keys (ikev2_sa_t * sa)
+ikev2_calc_keys_internal (ikev2_sa_t *sa, u8 *skeyseed)
{
u8 *tmp;
/* calculate SKEYSEED = prf(Ni | Nr, g^ir) */
- u8 *skeyseed = 0;
u8 *s = 0;
u16 integ_key_len = 0, salt_len = 0;
ikev2_sa_transform_t *tr_encr, *tr_prf, *tr_integ;
vec_append (s, sa->i_nonce);
vec_append (s, sa->r_nonce);
- skeyseed = ikev2_calc_prf (tr_prf, s, sa->dh_shared_key);
/* Calculate S = Ni | Nr | SPIi | SPIr */
u64 *spi;
salt_len * 2;
keymat = ikev2_calc_prfplus (tr_prf, skeyseed, s, len);
- vec_free (skeyseed);
vec_free (s);
int pos = 0;
}
static void
-ikev2_calc_child_keys (ikev2_sa_t * sa, ikev2_child_sa_t * child)
+ikev2_calc_keys_rekey (ikev2_sa_t *sa_new, ikev2_sa_t *sa_old)
+{
+ u8 *s = 0, *skeyseed = 0;
+ ikev2_sa_transform_t *tr_prf =
+ ikev2_sa_get_td_for_type (sa_old->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
+
+ vec_append (s, sa_new->dh_shared_key);
+ vec_append (s, sa_new->i_nonce);
+ vec_append (s, sa_new->r_nonce);
+ skeyseed = ikev2_calc_prf (tr_prf, sa_old->sk_d, s);
+
+ ikev2_calc_keys_internal (sa_new, skeyseed);
+
+ vec_free (skeyseed);
+ vec_free (s);
+}
+
+static void
+ikev2_calc_keys (ikev2_sa_t *sa)
+{
+ u8 *s = 0, *skeyseed = 0;
+ ikev2_sa_transform_t *tr_prf =
+ ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
+
+ vec_append (s, sa->i_nonce);
+ vec_append (s, sa->r_nonce);
+ skeyseed = ikev2_calc_prf (tr_prf, s, sa->dh_shared_key);
+
+ ikev2_calc_keys_internal (sa, skeyseed);
+
+ vec_free (skeyseed);
+ vec_free (s);
+}
+
+static void
+ikev2_calc_child_keys (ikev2_sa_t *sa, ikev2_child_sa_t *child, u8 kex)
{
u8 *s = 0;
u16 integ_key_len = 0;
else
salt_len = sizeof (u32);
+ if (kex)
+ vec_append (s, sa->dh_shared_key);
vec_append (s, sa->i_nonce);
vec_append (s, sa->r_nonce);
/* calculate PRFplus */
vec_free (keymat);
}
-static_always_inline u8 *
-ikev2_compute_nat_sha1 (u64 ispi, u64 rspi, ip_address_t * ia, u16 port)
+static u8 *
+ikev2_compute_nat_sha1 (u64 ispi, u64 rspi, ip_address_t *ia, u16 port)
{
const u32 max_buf_size =
sizeof (ispi) + sizeof (rspi) + sizeof (ip6_address_t) + sizeof (u16);
u16 plen = clib_net_to_host_u16 (ke->length);
ASSERT (plen >= sizeof (*ke) && plen <= rlen);
if (sizeof (*ke) > rlen)
- return 0;
+ {
+ ikev2_elog_error ("KE: packet too small");
+ return 0;
+ }
sa->dh_group = clib_net_to_host_u16 (ke->dh_group);
vec_reset_length (ke_data[0]);
}
static int
-ikev2_parse_nonce_payload (const void *p, u32 rlen, u8 * nonce)
+ikev2_parse_nonce_payload (const void *p, u32 rlen, const u8 **nonce)
{
const ike_payload_header_t *ikep = p;
u16 plen = clib_net_to_host_u16 (ikep->length);
ASSERT (plen >= sizeof (*ikep) && plen <= rlen);
- clib_memcpy_fast (nonce, ikep->payload, plen - sizeof (*ikep));
- return 1;
+ int len = plen - sizeof (*ikep);
+ ASSERT (len >= 16 && len <= 256);
+ if (PREDICT_FALSE (len < 16 || len > 256))
+ {
+ ikev2_elog_error ("NONCE: bad size");
+ return 0;
+ }
+ *nonce = ikep->payload;
+ return len;
}
static int
u16 * plen)
{
if (sizeof (*ikep) > rlen)
- return 0;
+ {
+ ikev2_elog_error ("payload: packet too small");
+ return 0;
+ }
*plen = clib_net_to_host_u16 (ikep->length);
if (*plen < sizeof (*ikep) || *plen > rlen)
- return 0;
+ {
+ ikev2_elog_error ("payload: bad size");
+ return 0;
+ }
return 1;
}
ikev2_process_sa_init_req (vlib_main_t *vm, ikev2_sa_t *sa, ike_header_t *ike,
udp_header_t *udp, u32 len, u32 sw_if_index)
{
- u8 nonce[IKEV2_NONCE_SIZE];
int p = 0;
u8 payload = ike->nextpayload;
ike_payload_header_t *ikep;
vec_add (sa->last_sa_init_req_packet_data, ike, len);
if (len < sizeof (*ike))
- return 0;
+ {
+ ikev2_elog_error ("IKE_INIT request too small");
+ return 0;
+ }
len -= sizeof (*ike);
while (p < len && payload != IKEV2_PAYLOAD_NONE)
}
else if (payload == IKEV2_PAYLOAD_NONCE)
{
+ const u8 *nonce;
+ int nonce_len;
vec_reset_length (sa->i_nonce);
- if (ikev2_parse_nonce_payload (ikep, current_length, nonce))
- vec_add (sa->i_nonce, nonce, plen - sizeof (*ikep));
+ if ((nonce_len = ikev2_parse_nonce_payload (ikep, current_length,
+ &nonce)) <= 0)
+ return 0;
+ vec_add (sa->i_nonce, nonce, nonce_len);
}
else if (payload == IKEV2_PAYLOAD_NOTIFY)
{
ikev2_sa_t * sa, ike_header_t * ike,
udp_header_t * udp, u32 len)
{
- u8 nonce[IKEV2_NONCE_SIZE];
int p = 0;
u8 payload = ike->nextpayload;
ike_payload_header_t *ikep;
vec_add (sa->last_sa_init_res_packet_data, ike, len);
if (sizeof (*ike) > len)
- return;
+ {
+ ikev2_elog_error ("IKE_INIT response too small");
+ return;
+ }
len -= sizeof (*ike);
while (p < len && payload != IKEV2_PAYLOAD_NONE)
}
else if (payload == IKEV2_PAYLOAD_NONCE)
{
+ const u8 *nonce;
+ int nonce_len;
vec_reset_length (sa->r_nonce);
- if (ikev2_parse_nonce_payload (ikep, current_length, nonce))
- vec_add (sa->r_nonce, nonce, plen - sizeof (*ikep));
+ if ((nonce_len = ikev2_parse_nonce_payload (ikep, current_length,
+ &nonce)) <= 0)
+ return;
+ vec_add (sa->r_nonce, nonce, nonce_len);
}
else if (payload == IKEV2_PAYLOAD_NOTIFY)
{
return plaintext;
}
-static_always_inline int
-ikev2_is_id_equal (ikev2_id_t * i1, ikev2_id_t * i2)
+static int
+ikev2_is_id_equal (const ikev2_id_t *i1, const ikev2_id_t *i2)
{
if (i1->type != i2->type)
return 0;
ikev2_child_sa_t *c;
/* find old IKE SAs with the same authenticated identity */
- /* *INDENT-OFF* */
pool_foreach (tmp, ptd->sas) {
if (!ikev2_is_id_equal (&tmp->i_id, &sa->i_id)
|| !ikev2_is_id_equal(&tmp->r_id, &sa->r_id))
if (sa->rspi != tmp->rspi)
vec_add1(delete, tmp - ptd->sas);
}
- /* *INDENT-ON* */
for (i = 0; i < vec_len (delete); i++)
{
return 1;
}
+static int
+ikev2_process_create_child_sa_rekey (ikev2_sa_t *sa, ikev2_sa_t *sar,
+ ikev2_rekey_t *rekey,
+ ikev2_sa_proposal_t *proposal,
+ ikev2_ts_t *tsi, ikev2_ts_t *tsr,
+ const u8 *nonce, int nonce_len)
+{
+ ikev2_sa_transform_t *tr;
+
+ rekey->i_proposal = proposal;
+ rekey->r_proposal = ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
+
+ if (sar->dh_group)
+ {
+ tr =
+ ikev2_sa_get_td_for_type (rekey->r_proposal, IKEV2_TRANSFORM_TYPE_DH);
+
+ if (!tr || tr->dh_type != sar->dh_group)
+ {
+ rekey->notify_type = IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD;
+ ikev2_sa_free_proposal_vector (&rekey->r_proposal);
+ return 0;
+ }
+
+ vec_free (sa->dh_shared_key);
+ vec_free (sa->dh_private_key);
+ vec_free (sa->i_dh_data);
+ vec_free (sa->r_dh_data);
+
+ sa->dh_group = sar->dh_group;
+ sa->i_dh_data = sar->i_dh_data;
+ sar->i_dh_data = 0;
+
+ ikev2_generate_dh (sa, tr);
+ rekey->kex = 1;
+ }
+
+ vec_reset_length (sa->i_nonce);
+ vec_add (sa->i_nonce, nonce, nonce_len);
+
+ vec_validate (sa->r_nonce, nonce_len - 1);
+ RAND_bytes ((u8 *) sa->r_nonce, nonce_len);
+
+ rekey->tsi = tsi;
+ rekey->tsr = tsr;
+
+ return 1;
+}
+
+static void
+ikev2_complete_sa_rekey (ikev2_sa_t *sa_new, ikev2_sa_t *sa_old,
+ ikev2_sa_rekey_t *sa_rekey)
+{
+ sa_new->del = 0;
+ sa_new->rekey = 0;
+ sa_new->new_child = 0;
+ sa_new->sa_rekey = 0;
+ sa_new->last_sa_init_req_packet_data = 0;
+ sa_new->last_sa_init_res_packet_data = 0;
+ sa_new->last_msg_id = ~0;
+ sa_new->last_res_packet_data = 0;
+ sa_new->last_init_msg_id = 0;
+ clib_memset (&sa_new->stats, 0, sizeof (sa_new->stats));
+
+ sa_new->ispi = sa_rekey->ispi;
+ sa_new->rspi = sa_rekey->rspi;
+ sa_new->i_nonce = sa_rekey->i_nonce;
+ sa_new->r_nonce = sa_rekey->r_nonce;
+ sa_new->dh_group = sa_rekey->dh_group;
+ sa_new->dh_shared_key = sa_rekey->dh_shared_key;
+ sa_new->dh_private_key = sa_rekey->dh_private_key;
+ sa_new->i_dh_data = sa_rekey->i_dh_data;
+ sa_new->r_dh_data = sa_rekey->r_dh_data;
+ sa_new->i_proposals = sa_rekey->i_proposals;
+ sa_new->r_proposals = sa_rekey->r_proposals;
+
+ sa_new->sk_d = 0;
+ sa_new->sk_ai = 0;
+ sa_new->sk_ar = 0;
+ sa_new->sk_ei = 0;
+ sa_new->sk_er = 0;
+ sa_new->sk_pi = 0;
+ sa_new->sk_pr = 0;
+ ikev2_calc_keys_rekey (sa_new, sa_old);
+
+ sa_new->i_auth.data = vec_dup (sa_old->i_auth.data);
+ sa_new->i_auth.key = sa_old->i_auth.key;
+ if (sa_new->i_auth.key)
+ EVP_PKEY_up_ref (sa_new->i_auth.key);
+
+ sa_new->r_auth.data = vec_dup (sa_old->r_auth.data);
+ sa_new->r_auth.key = sa_old->r_auth.key;
+ if (sa_new->r_auth.key)
+ EVP_PKEY_up_ref (sa_new->r_auth.key);
+
+ sa_new->i_id.data = vec_dup (sa_old->i_id.data);
+ sa_new->r_id.data = vec_dup (sa_old->r_id.data);
+
+ sa_old->is_tun_itf_set = 0;
+ sa_old->tun_itf = ~0;
+ sa_old->old_id_expiration = 0;
+ sa_old->current_remote_id_mask = 0;
+ sa_old->old_remote_id = 0;
+ sa_old->old_remote_id_present = 0;
+ sa_old->childs = 0;
+ sa_old->sw_if_index = ~0;
+}
+
+static void
+ikev2_process_sa_rekey (ikev2_sa_t *sa_new, ikev2_sa_t *sa_old,
+ ikev2_sa_rekey_t *sa_rekey)
+{
+ ikev2_sa_transform_t *tr;
+
+ if (ikev2_generate_sa_init_data (sa_new) != IKEV2_GENERATE_SA_INIT_OK)
+ {
+ sa_rekey->notify_type = IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD;
+ return;
+ }
+
+ sa_new->r_proposals =
+ ikev2_select_proposal (sa_new->i_proposals, IKEV2_PROTOCOL_IKE);
+
+ tr = ikev2_sa_get_td_for_type (sa_new->r_proposals, IKEV2_TRANSFORM_TYPE_DH);
+ if (!tr || tr->dh_type != sa_new->dh_group)
+ {
+ sa_rekey->notify_type = IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD;
+ return;
+ }
+
+ sa_rekey->notify_type = 0;
+ sa_rekey->ispi = sa_new->i_proposals[0].spi;
+ sa_rekey->rspi = sa_new->r_proposals[0].spi;
+ sa_rekey->i_nonce = sa_new->i_nonce;
+ sa_rekey->r_nonce = sa_new->r_nonce;
+ sa_rekey->dh_group = sa_new->dh_group;
+ sa_rekey->dh_shared_key = sa_new->dh_shared_key;
+ sa_rekey->dh_private_key = sa_new->dh_private_key;
+ sa_rekey->i_dh_data = sa_new->i_dh_data;
+ sa_rekey->r_dh_data = sa_new->r_dh_data;
+ sa_rekey->i_proposals = sa_new->i_proposals;
+ sa_rekey->r_proposals = sa_new->r_proposals;
+
+ sa_new->i_nonce = 0;
+ sa_new->r_nonce = 0;
+ sa_new->dh_shared_key = 0;
+ sa_new->dh_private_key = 0;
+ sa_new->i_dh_data = 0;
+ sa_new->r_dh_data = 0;
+ sa_new->i_proposals = 0;
+ sa_new->r_proposals = 0;
+}
+
static int
ikev2_process_create_child_sa_req (vlib_main_t * vm,
ikev2_sa_t * sa, ike_header_t * ike,
int p = 0;
u8 payload = ike->nextpayload;
u8 *plaintext = 0;
- u8 rekeying = 0;
- u8 nonce[IKEV2_NONCE_SIZE];
-
+ ikev2_rekey_t *rekey;
ike_payload_header_t *ikep;
ikev2_notify_t *n = 0;
ikev2_ts_t *tsi = 0;
ikev2_ts_t *tsr = 0;
ikev2_sa_proposal_t *proposal = 0;
ikev2_child_sa_t *child_sa;
- u32 dlen = 0;
+ u32 dlen = 0, src;
u16 plen;
+ const u8 *nonce = 0;
+ int nonce_len = 0;
+ ikev2_sa_t sar;
- ikev2_elog_exchange ("ispi %lx rspi %lx CREATE_CHILD_SA received "
- "from ", clib_host_to_net_u64 (ike->ispi),
- clib_host_to_net_u64 (ike->rspi),
- ip_addr_v4 (&sa->raddr).as_u32,
+ clib_memset (&sar, 0, sizeof (sar));
+
+ if (sa->is_initiator)
+ src = ip_addr_v4 (&sa->raddr).as_u32;
+ else
+ src = ip_addr_v4 (&sa->iaddr).as_u32;
+
+ ikev2_elog_exchange ("ispi %lx rspi %lx CREATE_CHILD_SA received from",
+ clib_host_to_net_u64 (ike->ispi),
+ clib_host_to_net_u64 (ike->rspi), src,
ip_addr_version (&sa->raddr) == AF_IP4);
plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
{
proposal = ikev2_parse_sa_payload (ikep, current_length);
}
+ else if (payload == IKEV2_PAYLOAD_KE)
+ {
+ if (!ikev2_parse_ke_payload (ikep, current_length, &sar,
+ &sar.i_dh_data))
+ goto cleanup_and_exit;
+ }
else if (payload == IKEV2_PAYLOAD_NOTIFY)
{
- n = ikev2_parse_notify_payload (ikep, current_length);
- if (n->msg_type == IKEV2_NOTIFY_MSG_REKEY_SA)
+ ikev2_notify_t *n0;
+ n0 = ikev2_parse_notify_payload (ikep, current_length);
+ if (n0->msg_type == IKEV2_NOTIFY_MSG_REKEY_SA)
{
- rekeying = 1;
+ vec_free (n);
+ n = n0;
}
+ else
+ vec_free (n0);
}
else if (payload == IKEV2_PAYLOAD_DELETE)
{
}
else if (payload == IKEV2_PAYLOAD_NONCE)
{
- ikev2_parse_nonce_payload (ikep, current_length, nonce);
+ nonce_len = ikev2_parse_nonce_payload (ikep, current_length, &nonce);
+ if (nonce_len <= 0)
+ goto cleanup_and_exit;
}
else if (payload == IKEV2_PAYLOAD_TSI)
{
p += plen;
}
- if (sa->is_initiator && proposal
- && proposal->protocol_id == IKEV2_PROTOCOL_ESP)
+ if (!proposal || !nonce ||
+ (proposal->protocol_id != IKEV2_PROTOCOL_ESP &&
+ proposal->protocol_id != IKEV2_PROTOCOL_IKE))
+ goto cleanup_and_exit;
+
+ if (sa->is_initiator)
{
- ikev2_rekey_t *rekey = sa->rekey;
+ rekey = sa->rekey;
if (vec_len (rekey) == 0)
goto cleanup_and_exit;
+ rekey->notify_type = 0;
rekey->protocol_id = proposal->protocol_id;
rekey->i_proposal =
ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
rekey->tsr = tsr;
/* update Nr */
vec_reset_length (sa->r_nonce);
- vec_add (sa->r_nonce, nonce, IKEV2_NONCE_SIZE);
+ vec_add (sa->r_nonce, nonce, nonce_len);
child_sa = ikev2_sa_get_child (sa, rekey->ispi, IKEV2_PROTOCOL_ESP, 1);
if (child_sa)
{
child_sa->rekey_retries = 0;
}
}
- else if (rekeying)
+ else
{
- ikev2_rekey_t *rekey;
- child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1);
- if (!child_sa)
+ if (n)
{
- ikev2_elog_uint (IKEV2_LOG_ERROR, "child SA spi %lx not found",
- n->spi);
- goto cleanup_and_exit;
+ child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1);
+ if (!child_sa)
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "child SA spi %lx not found",
+ n->spi);
+ goto cleanup_and_exit;
+ }
+ vec_add2 (sa->rekey, rekey, 1);
+ rekey->notify_type = 0;
+ rekey->kex = 0;
+ rekey->protocol_id = n->protocol_id;
+ rekey->spi = n->spi;
+ if (sa->old_remote_id_present)
+ {
+ rekey->notify_type = IKEV2_NOTIFY_MSG_TEMPORARY_FAILURE;
+ vec_free (proposal);
+ vec_free (tsr);
+ vec_free (tsi);
+ }
+ else if (!ikev2_process_create_child_sa_rekey (
+ sa, &sar, rekey, proposal, tsi, tsr, nonce, nonce_len))
+ {
+ vec_free (proposal);
+ vec_free (tsr);
+ vec_free (tsi);
+ }
+ }
+ else if (proposal[0].protocol_id == IKEV2_PROTOCOL_IKE)
+ {
+ ikev2_sa_rekey_t *sa_rekey;
+ if (tsi || tsr)
+ goto cleanup_and_exit;
+ sar.i_proposals = proposal;
+ vec_add (sar.i_nonce, nonce, nonce_len);
+ vec_add2 (sa->sa_rekey, sa_rekey, 1);
+ ikev2_process_sa_rekey (&sar, sa, sa_rekey);
+ }
+ else
+ {
+ /* create new child SA */
+ vec_add2 (sa->new_child, rekey, 1);
+ rekey->notify_type = 0;
+ rekey->kex = 0;
+ if (!ikev2_process_create_child_sa_rekey (
+ sa, &sar, rekey, proposal, tsi, tsr, nonce, nonce_len))
+ {
+ vec_free (proposal);
+ vec_free (tsr);
+ vec_free (tsi);
+ }
}
- vec_add2 (sa->rekey, rekey, 1);
- rekey->protocol_id = n->protocol_id;
- rekey->spi = n->spi;
- rekey->i_proposal = proposal;
- rekey->r_proposal =
- ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
- rekey->tsi = tsi;
- rekey->tsr = tsr;
- /* update Ni */
- vec_reset_length (sa->i_nonce);
- vec_add (sa->i_nonce, nonce, IKEV2_NONCE_SIZE);
- /* generate new Nr */
- vec_validate (sa->r_nonce, IKEV2_NONCE_SIZE - 1);
- RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE);
}
- else
- goto cleanup_and_exit;
vec_free (n);
+ ikev2_sa_free_all_vec (&sar);
return 1;
cleanup_and_exit:
vec_free (proposal);
vec_free (tsr);
vec_free (tsi);
+ ikev2_sa_free_all_vec (&sar);
return 0;
}
return authmsg;
}
+static int
+ikev2_match_profile (const ikev2_profile_t *p, const ikev2_id_t *id_loc,
+ const ikev2_id_t *id_rem, int is_initiator)
+{
+ /* on the initiator, IDi is always present and must match
+ * however on the responder, IDr (which is our local id) is optional */
+ if ((is_initiator || id_loc->type != 0) &&
+ !ikev2_is_id_equal (&p->loc_id, id_loc))
+ return 0;
+
+ /* on the initiator, we might not have configured a specific remote id
+ * however on the responder, the remote id should always be configured */
+ if ((!is_initiator || p->rem_id.type != 0) &&
+ !ikev2_is_id_equal (&p->rem_id, id_rem))
+ return 0;
+
+ return 1;
+}
+
static int
ikev2_ts_cmp (ikev2_ts_t * ts1, ikev2_ts_t * ts2)
{
ikev2_ts_t *ts, *p_tsi, *p_tsr, *tsi = 0, *tsr = 0;
ikev2_id_t *id_rem, *id_loc;
- /* *INDENT-OFF* */
pool_foreach (p, km->profiles) {
if (sa->is_initiator)
id_loc = &sa->r_id;
}
- /* check id */
- if (!ikev2_is_id_equal (&p->rem_id, id_rem)
- || !ikev2_is_id_equal (&p->loc_id, id_loc))
+ if (!ikev2_match_profile (p, id_loc, id_rem, sa->is_initiator))
continue;
sa->profile_index = p - km->profiles;
break;
}
- /* *INDENT-ON* */
if (tsi && tsr)
{
}
}
-static void
-ikev2_sa_auth (ikev2_sa_t * sa)
+static ikev2_profile_t *
+ikev2_select_profile (vlib_main_t *vm, ikev2_main_t *km, ikev2_sa_t *sa,
+ ikev2_sa_transform_t *tr_prf, u8 *key_pad)
{
- ikev2_main_t *km = &ikev2_main;
- ikev2_profile_t *p, *sel_p = 0;
- u8 *authmsg, *key_pad, *psk = 0, *auth = 0;
- ikev2_sa_transform_t *tr_prf;
-
- tr_prf =
- ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
-
- /* only shared key and rsa signature */
- if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
- sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
- {
- ikev2_elog_uint (IKEV2_LOG_ERROR,
- "unsupported authentication method %u",
- sa->i_auth.method);
- ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
- return;
- }
-
- key_pad = format (0, "%s", IKEV2_KEY_PAD);
- authmsg = ikev2_sa_generate_authmsg (sa, sa->is_initiator);
-
+ ikev2_profile_t *ret = 0, *p;
ikev2_id_t *id_rem, *id_loc;
ikev2_auth_t *sa_auth;
+ u8 *authmsg, *psk = 0, *auth = 0;
+
+ authmsg = ikev2_sa_generate_authmsg (sa, sa->is_initiator);
if (sa->is_initiator)
{
sa_auth = &sa->i_auth;
}
- /* *INDENT-OFF* */
- pool_foreach (p, km->profiles) {
+ pool_foreach (p, km->profiles)
+ {
+ if (!ikev2_match_profile (p, id_loc, id_rem, sa->is_initiator))
+ continue;
- /* check id */
- if (!ikev2_is_id_equal (&p->rem_id, id_rem)
- || !ikev2_is_id_equal (&p->loc_id, id_loc))
- continue;
+ if (sa_auth->method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
+ {
+ if (!p->auth.data ||
+ p->auth.method != IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
+ continue;
- if (sa_auth->method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
- {
- if (!p->auth.data ||
- p->auth.method != IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
- continue;
+ psk = ikev2_calc_prf (tr_prf, p->auth.data, key_pad);
+ auth = ikev2_calc_prf (tr_prf, psk, authmsg);
- psk = ikev2_calc_prf(tr_prf, p->auth.data, key_pad);
- auth = ikev2_calc_prf(tr_prf, psk, authmsg);
+ if (!clib_memcmp (auth, sa_auth->data, vec_len (sa_auth->data)))
+ {
+ ikev2_set_state (sa, IKEV2_STATE_AUTHENTICATED);
+ sa->auth_timestamp = vlib_time_now (vm);
+ vec_free (auth);
+ ret = p;
+ break;
+ }
+ else
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR,
+ "shared key mismatch! ispi %lx", sa->ispi);
+ }
+ }
+ else if (sa_auth->method == IKEV2_AUTH_METHOD_RSA_SIG)
+ {
+ if (p->auth.method != IKEV2_AUTH_METHOD_RSA_SIG)
+ continue;
- if (!clib_memcmp(auth, sa_auth->data, vec_len(sa_auth->data)))
- {
- ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED);
- vec_free(auth);
- sel_p = p;
- break;
- }
+ if (ikev2_verify_sign (p->auth.key, sa_auth->data, authmsg) == 1)
+ {
+ ikev2_set_state (sa, IKEV2_STATE_AUTHENTICATED);
+ sa->auth_timestamp = vlib_time_now (vm);
+ ret = p;
+ break;
+ }
+ else
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR,
+ "cert verification failed! ispi %lx", sa->ispi);
+ }
+ }
+ }
+ vec_free (authmsg);
+ return ret;
+}
- }
- else if (sa_auth->method == IKEV2_AUTH_METHOD_RSA_SIG)
- {
- if (p->auth.method != IKEV2_AUTH_METHOD_RSA_SIG)
- continue;
+static void
+ikev2_sa_auth (ikev2_sa_t *sa, vlib_main_t *vm)
+{
+ ikev2_main_t *km = &ikev2_main;
+ ikev2_profile_t *sel_p = 0;
+ ikev2_sa_transform_t *tr_prf;
+ u8 *psk, *authmsg, *key_pad;
- if (ikev2_verify_sign(p->auth.key, sa_auth->data, authmsg) == 1)
- {
- ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED);
- sel_p = p;
- break;
- }
- }
+ tr_prf =
+ ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
- vec_free(auth);
- vec_free(psk);
- }
- /* *INDENT-ON* */
+ /* only shared key and rsa signature */
+ if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
+ sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "unsupported authentication method %u",
+ sa->i_auth.method);
+ ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
+ return;
+ }
+
+ key_pad = format (0, "%s", IKEV2_KEY_PAD);
+ sel_p = ikev2_select_profile (vm, km, sa, tr_prf, key_pad);
if (sel_p)
{
+ ASSERT (sa->state == IKEV2_STATE_AUTHENTICATED);
sa->udp_encap = sel_p->udp_encap;
sa->ipsec_over_udp_port = sel_p->ipsec_over_udp_port;
- }
- vec_free (authmsg);
- if (sa->state == IKEV2_STATE_AUTHENTICATED)
- {
if (!sa->is_initiator)
{
vec_free (sa->r_id.data);
if (sel_p->auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
{
vec_free (sa->r_auth.data);
+ psk = ikev2_calc_prf (tr_prf, sel_p->auth.data, key_pad);
sa->r_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg);
sa->r_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC;
+ vec_free (psk);
}
else if (sel_p->auth.method == IKEV2_AUTH_METHOD_RSA_SIG)
{
"profile found! ispi %lx", sa->ispi);
ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
}
- vec_free (psk);
vec_free (key_pad);
}
-
static void
ikev2_sa_auth_init (ikev2_sa_t * sa)
{
return;
}
- key_pad = format (0, "%s", IKEV2_KEY_PAD);
authmsg = ikev2_sa_generate_authmsg (sa, 0);
- psk = ikev2_calc_prf (tr_prf, sa->i_auth.data, key_pad);
if (sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
{
+ key_pad = format (0, "%s", IKEV2_KEY_PAD);
+ psk = ikev2_calc_prf (tr_prf, sa->i_auth.data, key_pad);
vec_free (sa->i_auth.data);
sa->i_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg);
sa->i_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC;
+ vec_free (psk);
+ vec_free (key_pad);
}
else if (sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG)
{
sa->i_auth.data = ikev2_calc_sign (km->pkey, authmsg);
sa->i_auth.method = IKEV2_AUTH_METHOD_RSA_SIG;
}
-
- vec_free (psk);
- vec_free (key_pad);
vec_free (authmsg);
}
u32 remote_spi;
ipsec_crypto_alg_t encr_type;
ipsec_integ_alg_t integ_type;
- ip46_address_t local_ip;
- ip46_address_t remote_ip;
+ ip_address_t local_ip;
+ ip_address_t remote_ip;
ipsec_key_t loc_ckey, rem_ckey, loc_ikey, rem_ikey;
u8 is_rekey;
u32 old_remote_sa_id;
ikev2_main_t *km = &ikev2_main;
u32 sw_if_index;
int rv = 0;
+ tunnel_t tun_in = {
+ .t_flags = TUNNEL_FLAG_NONE,
+ .t_encap_decap_flags = TUNNEL_ENCAP_DECAP_FLAG_NONE,
+ .t_dscp = 0,
+ .t_mode = TUNNEL_MODE_P2P,
+ .t_table_id = 0,
+ .t_hop_limit = 255,
+ .t_src = a->remote_ip,
+ .t_dst = a->local_ip,
+ };
+ tunnel_t tun_out = {
+ .t_flags = TUNNEL_FLAG_NONE,
+ .t_encap_decap_flags = TUNNEL_ENCAP_DECAP_FLAG_NONE,
+ .t_dscp = 0,
+ .t_mode = TUNNEL_MODE_P2P,
+ .t_table_id = 0,
+ .t_hop_limit = 255,
+ .t_src = a->local_ip,
+ .t_dst = a->remote_ip,
+ };
if (~0 == a->sw_if_index)
{
/* no tunnel associated with the SA/profile - create a new one */
- rv = ipip_add_tunnel (IPIP_TRANSPORT_IP4, ~0,
- &a->local_ip, &a->remote_ip, 0,
+ rv = ipip_add_tunnel (IPIP_TRANSPORT_IP4, ~0, &ip_addr_46 (&a->local_ip),
+ &ip_addr_46 (&a->remote_ip), 0,
TUNNEL_ENCAP_DECAP_FLAG_NONE, IP_DSCP_CS0,
TUNNEL_MODE_P2P, &sw_if_index);
vec_add1 (sas_in, a->old_remote_sa_id);
}
- rv = ipsec_sa_add_and_lock (a->local_sa_id,
- a->local_spi,
- IPSEC_PROTOCOL_ESP, a->encr_type,
- &a->loc_ckey, a->integ_type, &a->loc_ikey,
- a->flags, 0, a->salt_local, &a->local_ip,
- &a->remote_ip, TUNNEL_ENCAP_DECAP_FLAG_NONE,
- IP_DSCP_CS0, NULL, a->src_port, a->dst_port);
+ rv = ipsec_sa_add_and_lock (a->local_sa_id, a->local_spi, IPSEC_PROTOCOL_ESP,
+ a->encr_type, &a->loc_ckey, a->integ_type,
+ &a->loc_ikey, a->flags, a->salt_local,
+ a->src_port, a->dst_port, 0, &tun_out, NULL);
if (rv)
goto err0;
- rv = ipsec_sa_add_and_lock (a->remote_sa_id, a->remote_spi,
- IPSEC_PROTOCOL_ESP, a->encr_type, &a->rem_ckey,
- a->integ_type, &a->rem_ikey,
- (a->flags | IPSEC_SA_FLAG_IS_INBOUND), 0,
- a->salt_remote, &a->remote_ip,
- &a->local_ip, TUNNEL_ENCAP_DECAP_FLAG_NONE,
- IP_DSCP_CS0, NULL,
- a->ipsec_over_udp_port, a->ipsec_over_udp_port);
+ rv = ipsec_sa_add_and_lock (
+ a->remote_sa_id, a->remote_spi, IPSEC_PROTOCOL_ESP, a->encr_type,
+ &a->rem_ckey, a->integ_type, &a->rem_ikey,
+ (a->flags | IPSEC_SA_FLAG_IS_INBOUND), a->salt_remote,
+ a->ipsec_over_udp_port, a->ipsec_over_udp_port, 0, &tun_in, NULL);
if (rv)
goto err1;
}
static int
-ikev2_create_tunnel_interface (vlib_main_t * vm,
- ikev2_sa_t * sa,
- ikev2_child_sa_t * child, u32 sa_index,
- u32 child_index, u8 is_rekey)
+ikev2_create_tunnel_interface (vlib_main_t *vm, ikev2_sa_t *sa,
+ ikev2_child_sa_t *child, u32 sa_index,
+ u32 child_index, u8 is_rekey, u8 kex)
{
u32 thread_index = vlib_get_thread_index ();
ikev2_main_t *km = &ikev2_main;
clib_memset (&a, 0, sizeof (a));
+ child->timestamp = vlib_time_now (vm);
+
if (!child->r_proposals)
{
ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
if (sa->is_initiator)
{
- ip_address_to_46 (&sa->iaddr, &a.local_ip);
- ip_address_to_46 (&sa->raddr, &a.remote_ip);
+ ip_address_copy (&a.local_ip, &sa->iaddr);
+ ip_address_copy (&a.remote_ip, &sa->raddr);
proposals = child->r_proposals;
a.local_spi = child->r_proposals[0].spi;
a.remote_spi = child->i_proposals[0].spi;
}
else
{
- ip_address_to_46 (&sa->raddr, &a.local_ip);
- ip_address_to_46 (&sa->iaddr, &a.remote_ip);
+ ip_address_copy (&a.local_ip, &sa->raddr);
+ ip_address_copy (&a.remote_ip, &sa->iaddr);
proposals = child->i_proposals;
a.local_spi = child->i_proposals[0].spi;
a.remote_spi = child->r_proposals[0].spi;
}
a.integ_type = integ_type;
- ikev2_calc_child_keys (sa, child);
+ ikev2_calc_child_keys (sa, child, kex);
if (sa->is_initiator)
{
u32 sw_if_index;
} ikev2_del_ipsec_tunnel_args_t;
-static_always_inline u32
+static u32
ikev2_flip_alternate_sa_bit (u32 id)
{
u32 mask = 0x800;
if (~0 == a->sw_if_index)
{
- /* *INDENT-OFF* */
ipip_tunnel_key_t key = {
.src = a->local_ip,
.dst = a->remote_ip,
.transport = IPIP_TRANSPORT_IP4,
.fib_index = 0,
};
- /* *INDENT-ON* */
ipip = ipip_tunnel_db_find (&key);
return 0;
}
+static void
+ikev2_add_invalid_ke_payload (ikev2_sa_t *sa, ikev2_payload_chain_t *chain)
+{
+ u8 *data = vec_new (u8, 2);
+ ikev2_sa_transform_t *tr_dh =
+ ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_DH);
+ ASSERT (tr_dh && tr_dh->dh_type);
+ data[0] = (tr_dh->dh_type >> 8) & 0xff;
+ data[1] = (tr_dh->dh_type) & 0xff;
+ ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD, data);
+ vec_free (data);
+}
+
+static void
+ikev2_add_notify_payload (ikev2_sa_t *sa, ikev2_payload_chain_t *chain,
+ u16 notify_type)
+{
+ if (notify_type == IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD)
+ ikev2_add_invalid_ke_payload (sa, chain);
+ else
+ ikev2_payload_add_notify (chain, notify_type, 0);
+}
+
+static void
+ikev2_add_create_child_resp (ikev2_sa_t *sa, ikev2_rekey_t *rekey,
+ ikev2_payload_chain_t *chain)
+{
+ if (rekey->notify_type)
+ {
+ ikev2_add_notify_payload (sa, chain, rekey->notify_type);
+ return;
+ }
+
+ ikev2_payload_add_sa (chain, rekey->r_proposal, 0);
+ ikev2_payload_add_nonce (chain, sa->r_nonce);
+ if (rekey->kex)
+ ikev2_payload_add_ke (chain, sa->dh_group, sa->r_dh_data);
+ ikev2_payload_add_ts (chain, rekey->tsi, IKEV2_PAYLOAD_TSI);
+ ikev2_payload_add_ts (chain, rekey->tsr, IKEV2_PAYLOAD_TSR);
+}
+
static u32
-ikev2_generate_message (vlib_buffer_t * b, ikev2_sa_t * sa,
- ike_header_t * ike, void *user, udp_header_t * udp)
+ikev2_generate_message (vlib_buffer_t *b, ikev2_sa_t *sa, ike_header_t *ike,
+ void *user, udp_header_t *udp, ikev2_stats_t *stats)
{
ikev2_main_t *km = &ikev2_main;
u16 buffer_data_size = vlib_buffer_get_default_data_size (km->vlib_main);
}
else if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE)
{
- u8 *data = vec_new (u8, 2);
- ikev2_sa_transform_t *tr_dh;
- tr_dh =
- ikev2_sa_get_td_for_type (sa->r_proposals,
- IKEV2_TRANSFORM_TYPE_DH);
- ASSERT (tr_dh && tr_dh->dh_type);
-
- data[0] = (tr_dh->dh_type >> 8) & 0xff;
- data[1] = (tr_dh->dh_type) & 0xff;
-
- ikev2_payload_add_notify (chain,
- IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD,
- data);
- vec_free (data);
+ ikev2_add_invalid_ke_payload (sa, chain);
ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
}
else if (sa->state == IKEV2_STATE_NOTIFY_AND_DELETE)
ASSERT (udp);
ike->rspi = clib_host_to_net_u64 (sa->rspi);
- ikev2_payload_add_sa (chain, sa->r_proposals);
+ ikev2_payload_add_sa (chain, sa->r_proposals, 0);
ikev2_payload_add_ke (chain, sa->dh_group, sa->r_dh_data);
ikev2_payload_add_nonce (chain, sa->r_nonce);
if (sa->state == IKEV2_STATE_AUTHENTICATED)
{
ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
- ikev2_payload_add_id (chain, &sa->i_id, IKEV2_PAYLOAD_IDI);
ikev2_payload_add_auth (chain, &sa->r_auth);
- ikev2_payload_add_sa (chain, sa->childs[0].r_proposals);
+ ikev2_payload_add_sa (chain, sa->childs[0].r_proposals, 0);
ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
}
else if (sa->state == IKEV2_STATE_SA_INIT)
{
ikev2_payload_add_id (chain, &sa->i_id, IKEV2_PAYLOAD_IDI);
- ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
+ /* IDr is optional when sending INIT from the initiator */
+ ASSERT (sa->r_id.type != 0 || sa->is_initiator);
+ if (sa->r_id.type != 0)
+ ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
ikev2_payload_add_auth (chain, &sa->i_auth);
- ikev2_payload_add_sa (chain, sa->childs[0].i_proposals);
+ ikev2_payload_add_sa (chain, sa->childs[0].i_proposals, 0);
ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_INITIAL_CONTACT,
vec_free (data);
sa->unsupported_cp = 0;
}
- /* else send empty response */
+ else
+ /* else send empty response */
+ {
+ if (ike_hdr_is_response (ike))
+ {
+ ASSERT (stats != 0);
+ stats->n_keepalives++;
+ sa->stats.n_keepalives++;
+ }
+ }
}
else if (ike->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA)
{
notify.spi = sa->childs[0].i_proposals->spi;
*(u32 *) data = clib_host_to_net_u32 (notify.spi);
- ikev2_payload_add_sa (chain, proposals);
+ ikev2_payload_add_sa (chain, proposals, 0);
ikev2_payload_add_nonce (chain, sa->i_nonce);
ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
vec_free (data);
}
- else
+ else if (vec_len (sa->rekey) > 0)
{
- if (vec_len (sa->rekey) > 0)
- {
- ikev2_payload_add_sa (chain, sa->rekey[0].r_proposal);
- ikev2_payload_add_nonce (chain, sa->r_nonce);
- ikev2_payload_add_ts (chain, sa->rekey[0].tsi,
- IKEV2_PAYLOAD_TSI);
- ikev2_payload_add_ts (chain, sa->rekey[0].tsr,
- IKEV2_PAYLOAD_TSR);
- vec_del1 (sa->rekey, 0);
- }
- else if (sa->unsupported_cp)
- {
- u8 *data = vec_new (u8, 1);
-
- data[0] = sa->unsupported_cp;
- ikev2_payload_add_notify (chain,
- IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD,
- data);
- vec_free (data);
- sa->unsupported_cp = 0;
- }
+ ikev2_add_create_child_resp (sa, &sa->rekey[0], chain);
+ vec_del1 (sa->rekey, 0);
+ }
+ else if (vec_len (sa->new_child) > 0)
+ {
+ ikev2_add_create_child_resp (sa, &sa->new_child[0], chain);
+ vec_del1 (sa->new_child, 0);
+ }
+ else if (vec_len (sa->sa_rekey) > 0)
+ {
+ if (sa->sa_rekey[0].notify_type)
+ ikev2_add_notify_payload (sa, chain, sa->sa_rekey[0].notify_type);
else
{
- ikev2_payload_add_notify (chain,
- IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS,
- 0);
+ ikev2_payload_add_sa (chain, sa->sa_rekey[0].r_proposals, 1);
+ ikev2_payload_add_nonce (chain, sa->sa_rekey[0].r_nonce);
+ ikev2_payload_add_ke (chain, sa->sa_rekey[0].dh_group,
+ sa->sa_rekey[0].r_dh_data);
}
+ vec_del1 (sa->sa_rekey, 0);
+ }
+ else if (sa->unsupported_cp)
+ {
+ u8 *data = vec_new (u8, 1);
+
+ data[0] = sa->unsupported_cp;
+ ikev2_payload_add_notify (
+ chain, IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, data);
+ vec_free (data);
+ sa->unsupported_cp = 0;
+ }
+ else
+ {
+ ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS,
+ 0);
}
}
/* req is retransmit */
if (sa->state == IKEV2_STATE_SA_INIT)
{
+ sa->stats.n_init_retransmit++;
tmp = (ike_header_t *) sa->last_sa_init_res_packet_data;
u32 slen = clib_net_to_host_u32 (tmp->length);
ike->ispi = tmp->ispi;
u32 res;
ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
- /* *INDENT-OFF* */
pool_foreach (sa, ptd->sas) {
res = ikev2_retransmit_sa_init_one (sa, ike, iaddr, raddr, rlen);
if (res)
return res;
}
- /* *INDENT-ON* */
/* req is not retransmit */
return 0;
u32 msg_id = clib_net_to_host_u32 (ike->msgid);
/* new req */
- if (msg_id > sa->last_msg_id)
+ if (msg_id > sa->last_msg_id || sa->last_msg_id == ~0)
{
sa->last_msg_id = msg_id;
return 0;
/* retransmitted req */
if (msg_id == sa->last_msg_id)
{
+ sa->stats.n_retransmit++;
ike_header_t *tmp = (ike_header_t *) sa->last_res_packet_data;
u32 slen = clib_net_to_host_u32 (tmp->length);
ike->ispi = tmp->ispi;
sizeof (ispi));
}
-static_always_inline void
-ikev2_rewrite_v6_addrs (ikev2_sa_t * sa, ip6_header_t * ih)
+static void
+ikev2_rewrite_v6_addrs (ikev2_sa_t *sa, ip6_header_t *ih)
{
if (sa->is_initiator)
{
}
}
-static_always_inline void
-ikev2_rewrite_v4_addrs (ikev2_sa_t * sa, ip4_header_t * ih)
+static void
+ikev2_rewrite_v4_addrs (ikev2_sa_t *sa, ip4_header_t *ih)
{
if (sa->is_initiator)
{
}
}
-static_always_inline void
-ikev2_set_ip_address (ikev2_sa_t * sa, const void *iaddr,
- const void *raddr, const int af)
+static void
+ikev2_set_ip_address (ikev2_sa_t *sa, const void *iaddr, const void *raddr,
+ const ip_address_family_t af)
{
ip_address_set (&sa->raddr, raddr, af);
ip_address_set (&sa->iaddr, iaddr, af);
ikev2_elog_error (IKEV2_GENERATE_SA_INIT_OK_ERR_UNSUPP_STR);
}
-static_always_inline uword
+static void
+ikev2_update_stats (vlib_main_t *vm, u32 node_index, ikev2_stats_t *s)
+{
+ vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_KEEPALIVE,
+ s->n_keepalives);
+ vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_REKEY_REQ,
+ s->n_rekey_req);
+ vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_INIT_SA_REQ,
+ s->n_sa_init_req);
+ vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_IKE_AUTH_REQ,
+ s->n_sa_auth_req);
+}
+
+static uword
ikev2_node_internal (vlib_main_t *vm, vlib_node_runtime_t *node,
vlib_frame_t *frame, u8 is_ip4, u8 natt)
{
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
+ ikev2_stats_t _stats, *stats = &_stats;
int res;
+ /* no NAT traversal for ip6 */
+ ASSERT (!natt || is_ip4);
+
+ clib_memset_u16 (stats, 0, sizeof (stats[0]) / sizeof (u16));
from = vlib_frame_vector_args (frame);
vlib_get_buffers (vm, from, bufs, n_left);
b = bufs;
if (ike_hdr_is_initiator (ike0))
{
+ sa0->stats.n_sa_init_req++;
+ stats->n_sa_init_req++;
if (ike0->rspi == 0)
{
if (is_ip4)
|| sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE)
{
ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
- slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0);
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
if (~0 == slen)
vlib_node_increment_counter (vm, node->node_index,
IKEV2_ERROR_NO_BUFF_SPACE,
ike0->msgid =
clib_net_to_host_u32 (sai->last_init_msg_id);
sa0->last_init_msg_id = sai->last_init_msg_id + 1;
- slen =
- ikev2_generate_message (b0, sa0, ike0, 0, udp0);
+ slen = ikev2_generate_message (b0, sa0, ike0, 0,
+ udp0, stats);
if (~0 == slen)
vlib_node_increment_counter (vm,
node->node_index,
sa0->dst_port = clib_net_to_host_u16 (udp0->src_port);
res = ikev2_process_auth_req (vm, sa0, ike0, rlen);
if (res)
- ikev2_sa_auth (sa0);
+ ikev2_sa_auth (sa0, vm);
else
vlib_node_increment_counter (vm, node->node_index,
IKEV2_ERROR_MALFORMED_PACKET, 1);
if (sa0->state == IKEV2_STATE_AUTHENTICATED)
{
ikev2_initial_contact_cleanup (ptd, sa0);
+ p = hash_get (ptd->sa_by_rspi,
+ clib_net_to_host_u64 (ike0->rspi));
ikev2_sa_match_ts (sa0);
if (sa0->state != IKEV2_STATE_TS_UNACCEPTABLE)
- ikev2_create_tunnel_interface (vm, sa0,
- &sa0->childs[0],
- p[0], 0, 0);
+ ikev2_create_tunnel_interface (vm, sa0, &sa0->childs[0],
+ p[0], 0, 0, 0);
}
if (sa0->is_initiator)
{
+ sa0->last_msg_id = ~0;
ikev2_del_sa_init (sa0->ispi);
}
else
{
+ sa0->stats.n_sa_auth_req++;
+ stats->n_sa_auth_req++;
ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
- slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0);
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
if (~0 == slen)
vlib_node_increment_counter (vm, node->node_index,
IKEV2_ERROR_NO_BUFF_SPACE,
if (ike_hdr_is_request (ike0))
{
ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
- slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0);
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
if (~0 == slen)
vlib_node_increment_counter (vm, node->node_index,
IKEV2_ERROR_NO_BUFF_SPACE,
goto dispatch0;
}
- if (sa0->rekey)
+ if (vec_len (sa0->rekey) > 0)
{
- if (sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE)
+ if (!sa0->rekey[0].notify_type &&
+ sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE)
{
- if (sa0->childs)
+ if (vec_len (sa0->childs) > 0)
ikev2_sa_free_all_child_sa (&sa0->childs);
ikev2_child_sa_t *child;
vec_add2 (sa0->childs, child, 1);
child->tsi = sa0->rekey[0].tsi;
child->tsr = sa0->rekey[0].tsr;
ikev2_create_tunnel_interface (vm, sa0, child, p[0],
- child - sa0->childs, 1);
+ child - sa0->childs, 1,
+ sa0->rekey[0].kex);
}
if (ike_hdr_is_response (ike0))
{
}
else
{
+ stats->n_rekey_req++;
+ sa0->stats.n_rekey_req++;
ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
- slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0);
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
if (~0 == slen)
vlib_node_increment_counter (vm, node->node_index,
IKEV2_ERROR_NO_BUFF_SPACE,
1);
}
}
+ else if (vec_len (sa0->new_child) > 0)
+ {
+ ikev2_child_sa_t *c;
+ vec_add2 (sa0->childs, c, 1);
+ memset (c, 0, sizeof (*c));
+ c->r_proposals = sa0->new_child[0].r_proposal;
+ c->i_proposals = sa0->new_child[0].i_proposal;
+ c->tsi = sa0->new_child[0].tsi;
+ c->tsr = sa0->new_child[0].tsr;
+ ikev2_create_tunnel_interface (vm, sa0, c, p[0],
+ c - sa0->childs, 0,
+ sa0->new_child[0].kex);
+ if (ike_hdr_is_request (ike0))
+ {
+ ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, 0);
+ if (~0 == slen)
+ vlib_node_increment_counter (
+ vm, node->node_index, IKEV2_ERROR_NO_BUFF_SPACE, 1);
+ }
+ }
+ else if (vec_len (sa0->sa_rekey) > 0)
+ {
+ if (!sa0->sa_rekey[0].notify_type)
+ {
+ ikev2_sa_t *sar, *tmp = 0;
+ pool_get (ptd->sas, tmp);
+ sa0 = pool_elt_at_index (ptd->sas, p[0]);
+ /* swap old/new SAs to keep index and inherit IPsec SA */
+ clib_memcpy_fast (tmp, sa0, sizeof (*tmp));
+ sar = sa0;
+ sa0 = tmp;
+ hash_set (ptd->sa_by_rspi, sa0->rspi, sa0 - ptd->sas);
+ p = hash_get (ptd->sa_by_rspi, sa0->rspi);
+ ikev2_complete_sa_rekey (sar, sa0, &sa0->sa_rekey[0]);
+ hash_set (ptd->sa_by_rspi, sar->rspi, sar - ptd->sas);
+ }
+ if (ike_hdr_is_response (ike0))
+ {
+ vec_free (sa0->sa_rekey);
+ }
+ else
+ {
+ stats->n_rekey_req++;
+ sa0->stats.n_rekey_req++;
+ ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
+ if (~0 == slen)
+ vlib_node_increment_counter (
+ vm, node->node_index, IKEV2_ERROR_NO_BUFF_SPACE, 1);
+ }
+ }
}
}
else
b += 1;
}
+ ikev2_update_stats (vm, node->node_index, stats);
vlib_node_increment_counter (vm, node->node_index,
IKEV2_ERROR_PROCESSED, frame->n_vectors);
vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
return ikev2_node_internal (vm, node, frame, 0 /* is_ip4 */, 0);
}
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ikev2_node_ip4,static) = {
.function = ikev2_ip4,
.name = "ikev2-ip4",
.format_trace = format_ikev2_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(ikev2_error_strings),
- .error_strings = ikev2_error_strings,
+ .n_errors = IKEV2_N_ERROR,
+ .error_counters = ikev2_error_counters,
.n_next_nodes = IKEV2_IP4_N_NEXT,
.next_nodes = {
.format_trace = format_ikev2_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(ikev2_error_strings),
- .error_strings = ikev2_error_strings,
+ .n_errors = IKEV2_N_ERROR,
+ .error_counters = ikev2_error_counters,
.n_next_nodes = IKEV2_IP4_N_NEXT,
.next_nodes = {
.format_trace = format_ikev2_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(ikev2_error_strings),
- .error_strings = ikev2_error_strings,
+ .n_errors = IKEV2_N_ERROR,
+ .error_counters = ikev2_error_counters,
.n_next_nodes = IKEV2_IP6_N_NEXT,
.next_nodes = {
[IKEV2_NEXT_IP6_ERROR_DROP] = "error-drop",
},
};
-/* *INDENT-ON* */
// set ikev2 proposals when vpp is used as initiator
static clib_error_t *
return 0;
}
-static_always_inline vnet_api_error_t
-ikev2_register_udp_port (ikev2_profile_t * p, u16 port)
+static vnet_api_error_t
+ikev2_register_udp_port (ikev2_profile_t *p, u16 port)
{
- ikev2_main_t *km = &ikev2_main;
- udp_dst_port_info_t *pi;
-
- uword *v = hash_get (km->udp_ports, port);
- pi = udp_get_dst_port_info (&udp_main, port, UDP_IP4);
-
- if (v)
- {
- /* IKE already uses this port, only increment reference counter */
- ASSERT (pi);
- v[0]++;
- }
- else
- {
- if (pi)
- return VNET_API_ERROR_UDP_PORT_TAKEN;
-
- udp_register_dst_port (km->vlib_main, port,
- ipsec4_tun_input_node.index, 1);
- hash_set (km->udp_ports, port, 1);
- }
+ ipsec_register_udp_port (port, 0 /* is_ip4 */);
+ ipsec_register_udp_port (port, 1 /* is_ip4 */);
p->ipsec_over_udp_port = port;
return 0;
}
-static_always_inline void
-ikev2_unregister_udp_port (ikev2_profile_t * p)
+static void
+ikev2_unregister_udp_port (ikev2_profile_t *p)
{
- ikev2_main_t *km = &ikev2_main;
- uword *v;
-
if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
return;
- v = hash_get (km->udp_ports, p->ipsec_over_udp_port);
- if (!v)
- return;
-
- v[0]--;
-
- if (v[0] == 0)
- {
- udp_unregister_dst_port (km->vlib_main, p->ipsec_over_udp_port, 1);
- hash_unset (km->udp_ports, p->ipsec_over_udp_port);
- }
-
+ ipsec_unregister_udp_port (p->ipsec_over_udp_port, 0 /* is_ip4 */);
+ ipsec_unregister_udp_port (p->ipsec_over_udp_port, 1 /* is_ip4 */);
p->ipsec_over_udp_port = IPSEC_UDP_PORT_NONE;
}
ike0->flags = 0;
ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
sa->last_init_msg_id += 1;
- len = ikev2_generate_message (b0, sa, ike0, 0, 0);
+ len = ikev2_generate_message (b0, sa, ike0, 0, 0, 0);
if (~0 == len)
return;
u32 *sai;
u32 *del_sai = 0;
- /* *INDENT-OFF* */
pool_foreach (sa, km->sais) {
if (pi == sa->profile_index)
vec_add1 (del_sai, sa - km->sais);
}
- /* *INDENT-ON* */
vec_foreach (sai, del_sai)
{
vec_foreach (tkm, km->per_thread_data)
{
- /* *INDENT-OFF* */
pool_foreach (sa, tkm->sas) {
if (sa->profile_index != ~0 && pi == sa->profile_index)
vec_add1 (del_sai, sa - tkm->sas);
}
- /* *INDENT-ON* */
vec_foreach (sai, del_sai)
{
vec_free (del_sai);
}
+static void
+ikev2_profile_responder_free (ikev2_responder_t *r)
+{
+ vec_free (r->hostname);
+}
+
static void
ikev2_profile_free (ikev2_profile_t * p)
{
if (p->auth.key)
EVP_PKEY_free (p->auth.key);
+ ikev2_profile_responder_free (&p->responder);
+
vec_free (p->loc_id.data);
vec_free (p->rem_id.data);
}
+static void
+ikev2_bind (vlib_main_t *vm, ikev2_main_t *km)
+{
+ if (0 == km->bind_refcount)
+ {
+ udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip4.index, 1);
+ udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip6.index, 0);
+ udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip4.index, 1);
+ udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip6.index, 0);
+
+ vlib_punt_register (km->punt_hdl,
+ ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0],
+ "ikev2-ip4-natt");
+ }
+
+ km->bind_refcount++;
+}
+
+static void
+ikev2_unbind (vlib_main_t *vm, ikev2_main_t *km)
+{
+ km->bind_refcount--;
+ if (0 == km->bind_refcount)
+ {
+ vlib_punt_unregister (km->punt_hdl,
+ ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0],
+ "ikev2-ip4-natt");
+
+ udp_unregister_dst_port (vm, IKEV2_PORT_NATT, 0);
+ udp_unregister_dst_port (vm, IKEV2_PORT_NATT, 1);
+ udp_unregister_dst_port (vm, IKEV2_PORT, 0);
+ udp_unregister_dst_port (vm, IKEV2_PORT, 1);
+ }
+}
+
+static void ikev2_lazy_init (ikev2_main_t *km);
+
clib_error_t *
ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add)
{
ikev2_main_t *km = &ikev2_main;
ikev2_profile_t *p;
+ ikev2_lazy_init (km);
+
if (is_add)
{
if (ikev2_profile_index_by_name (name))
p->tun_itf = ~0;
uword index = p - km->profiles;
mhash_set_mem (&km->profile_index_by_name, name, &index, 0);
+
+ ikev2_bind (vm, km);
}
else
{
if (!p)
return clib_error_return (0, "policy %v does not exists", name);
+ ikev2_unbind (vm, km);
+
ikev2_unregister_udp_port (p);
ikev2_cleanup_profile_sessions (km, p);
return 0;
}
-static_always_inline void
-ikev2_set_ts_type (ikev2_ts_t * ts, const ip_address_t * addr)
+static void
+ikev2_set_ts_type (ikev2_ts_t *ts, const ip_address_t *addr)
{
if (ip_addr_version (addr) == AF_IP4)
ts->ts_type = TS_IPV4_ADDR_RANGE;
ts->ts_type = TS_IPV6_ADDR_RANGE;
}
-static_always_inline void
-ikev2_set_ts_addrs (ikev2_ts_t * ts, const ip_address_t * start,
- const ip_address_t * end)
+static void
+ikev2_set_ts_addrs (ikev2_ts_t *ts, const ip_address_t *start,
+ const ip_address_t *end)
{
ip_address_copy (&ts->start_addr, start);
ip_address_copy (&ts->end_addr, end);
return 0;
}
+clib_error_t *
+ikev2_set_profile_responder_hostname (vlib_main_t *vm, u8 *name, u8 *hostname,
+ u32 sw_if_index)
+{
+ ikev2_profile_t *p;
+ clib_error_t *r;
+
+ p = ikev2_profile_index_by_name (name);
+
+ if (!p)
+ {
+ r = clib_error_return (0, "unknown profile %v", name);
+ return r;
+ }
+
+ p->responder.is_resolved = 0;
+ p->responder.sw_if_index = sw_if_index;
+ p->responder.hostname = vec_dup (hostname);
+
+ return 0;
+}
clib_error_t *
ikev2_set_profile_responder (vlib_main_t * vm, u8 * name,
return r;
}
+ p->responder.is_resolved = 1;
p->responder.sw_if_index = sw_if_index;
ip_address_copy (&p->responder.addr, &addr);
u32 crypto_key_size)
{
ikev2_profile_t *p;
- clib_error_t *r;
p = ikev2_profile_index_by_name (name);
-
if (!p)
- {
- r = clib_error_return (0, "unknown profile %v", name);
- return r;
- }
+ return clib_error_return (0, "unknown profile %v", name);
+
+ if ((IKEV2_TRANSFORM_INTEG_TYPE_NONE != integ_alg) +
+ (IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16 == crypto_alg) !=
+ 1)
+ return clib_error_return (0, "invalid cipher + integrity algorithm");
p->ike_ts.crypto_alg = crypto_alg;
p->ike_ts.integ_alg = integ_alg;
u8 is_set)
{
ikev2_profile_t *p = ikev2_profile_index_by_name (name);
- ikev2_main_t *km = &ikev2_main;
vnet_api_error_t rv = 0;
- uword *v;
if (!p)
return VNET_API_ERROR_INVALID_VALUE;
}
else
{
- v = hash_get (km->udp_ports, port);
- if (!v)
- return VNET_API_ERROR_IKE_NO_PORT;
-
if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
return VNET_API_ERROR_INVALID_VALUE;
return 0;
}
+static clib_error_t *
+ikev2_resolve_responder_hostname (vlib_main_t *vm, ikev2_responder_t *r)
+{
+ ikev2_main_t *km = &ikev2_main;
+ dns_cache_entry_t *ep = 0;
+ dns_pending_request_t _t0, *t0 = &_t0;
+ dns_resolve_name_t _rn, *rn = &_rn;
+ u8 *name;
+ int rv;
+
+ if (!km->dns_resolve_name_ptr)
+ return clib_error_return (0, "cannot load symbols from dns plugin");
+
+ t0->request_type = DNS_API_PENDING_NAME_TO_IP;
+ /* VPP main curse: IKEv2 uses only non-NULL terminated vectors internally
+ * whereas DNS resolver expects a NULL-terminated C-string */
+ name = vec_dup (r->hostname);
+ vec_terminate_c_string (name);
+ rv = ((__typeof__ (dns_resolve_name) *) km->dns_resolve_name_ptr) (name, &ep,
+ t0, rn);
+ vec_free (name);
+ if (rv < 0)
+ return clib_error_return (0, "dns lookup failure");
+
+ if (ep == 0)
+ return 0;
+
+ ip_address_copy (&r->addr, &rn->address);
+ r->is_resolved = 1;
+ return 0;
+}
+
clib_error_t *
ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name)
{
ike_header_t *ike0;
u32 bi0 = 0;
int len = sizeof (ike_header_t), valid_ip = 0;
- ip_address_t if_ip = ip_address_initializer;
+ ip_address_t src_if_ip = ip_address_initializer;
p = ikev2_profile_index_by_name (name);
return r;
}
- if (p->responder.sw_if_index == ~0
- || ip_address_is_zero (&p->responder.addr))
+ if (p->responder.sw_if_index == ~0 ||
+ (ip_address_is_zero (&p->responder.addr) &&
+ vec_len (p->responder.hostname) == 0))
{
r = clib_error_return (0, "responder not set for profile %v", name);
return r;
}
- if (ikev2_get_if_address (p->responder.sw_if_index,
- ip_addr_version (&p->responder.addr), &if_ip))
+ if (!p->responder.is_resolved)
+ {
+ /* try to resolve using dns plugin
+ * success does not mean we have resolved the name */
+ r = ikev2_resolve_responder_hostname (vm, &p->responder);
+ if (r)
+ return r;
+ }
+
+ if (p->responder.is_resolved &&
+ ikev2_get_if_address (p->responder.sw_if_index,
+ ip_addr_version (&p->responder.addr), &src_if_ip))
{
valid_ip = 1;
}
proposals[0].protocol_id = IKEV2_PROTOCOL_IKE;
/* Add and then cleanup proposal data */
- ikev2_payload_add_sa (chain, proposals);
+ ikev2_payload_add_sa (chain, proposals, 0);
ikev2_sa_free_proposal_vector (&proposals);
sa.is_initiator = 1;
sa.childs[0].i_proposals[0].protocol_id = IKEV2_PROTOCOL_ESP;
RAND_bytes ((u8 *) & sa.childs[0].i_proposals[0].spi,
sizeof (sa.childs[0].i_proposals[0].spi));
+ sa.childs[0].i_proposals[0].spi &= 0xffffffff;
/* Add NAT detection notification messages (mandatory) */
- u8 *nat_detection_sha1 =
- ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa.ispi),
- clib_host_to_net_u64 (sa.rspi),
- &if_ip, clib_host_to_net_u16 (IKEV2_PORT));
+ u8 *nat_detection_sha1 = ikev2_compute_nat_sha1 (
+ clib_host_to_net_u64 (sa.ispi), clib_host_to_net_u64 (sa.rspi), &src_if_ip,
+ clib_host_to_net_u16 (IKEV2_PORT));
ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP,
nat_detection_sha1);
vec_add (sa.last_sa_init_req_packet_data, ike0, len);
/* add data to the SA then add it to the pool */
- ip_address_copy (&sa.iaddr, &if_ip);
+ ip_address_copy (&sa.iaddr, &src_if_ip);
ip_address_copy (&sa.raddr, &p->responder.addr);
sa.i_id.type = p->loc_id.type;
sa.i_id.data = vec_dup (p->loc_id.data);
if (valid_ip)
{
- ikev2_send_ike (vm, &if_ip, &p->responder.addr, bi0, len,
- IKEV2_PORT, sa.dst_port, sa.sw_if_index);
+ ikev2_send_ike (vm, &src_if_ip, &p->responder.addr, bi0, len, IKEV2_PORT,
+ sa.dst_port, sa.sw_if_index);
ikev2_elog_exchange
("ispi %lx rspi %lx IKEV2_EXCHANGE_SA_INIT sent to ",
ip_addr_v4 (&p->responder.addr).as_u32,
ip_addr_version (&p->responder.addr) == AF_IP4);
}
- else
- {
- r =
- clib_error_return (0, "interface %U does not have any IP address!",
- format_vnet_sw_if_index_name, vnet_get_main (),
- p->responder.sw_if_index);
- return r;
- }
return 0;
}
sa->del->spi = csa->i_proposals->spi;
ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
sa->last_init_msg_id += 1;
- len = ikev2_generate_message (b0, sa, ike0, 0, 0);
+ len = ikev2_generate_message (b0, sa, ike0, 0, 0, 0);
if (~0 == len)
return;
ikev2_sa_t *sa;
if (fchild)
break;
- /* *INDENT-OFF* */
pool_foreach (sa, tkm->sas) {
fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1);
if (fchild)
break;
}
}
- /* *INDENT-ON* */
}
if (!fchild || !fsa)
ikev2_sa_t *sa;
if (fsa)
break;
- /* *INDENT-OFF* */
pool_foreach (sa, tkm->sas) {
if (sa->ispi == ispi)
{
break;
}
}
- /* *INDENT-ON* */
}
if (!fsa)
ikev2_rekey_t *rekey;
vec_reset_length (sa->rekey);
vec_add2 (sa->rekey, rekey, 1);
+ rekey->kex = 0;
ikev2_sa_proposal_t *proposals = vec_dup (csa->i_proposals);
/*need new ispi */
RAND_bytes ((u8 *) & proposals[0].spi, sizeof (proposals[0].spi));
+ proposals[0].spi &= 0xffffffff;
rekey->spi = proposals[0].spi;
rekey->ispi = csa->i_proposals->spi;
- len = ikev2_generate_message (b0, sa, ike0, proposals, 0);
+ len = ikev2_generate_message (b0, sa, ike0, proposals, 0, 0);
if (~0 == len)
return;
ikev2_sa_t *sa;
if (fchild)
break;
- /* *INDENT-OFF* */
pool_foreach (sa, tkm->sas) {
fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1);
if (fchild)
break;
}
}
- /* *INDENT-ON* */
}
if (!fchild || !fsa)
vec_foreach (tkm, km->per_thread_data)
{
- /* *INDENT-OFF* */
pool_foreach (sa, tkm->sas) {
if (ikev2_sa_sw_if_match (sa, sw_if_index))
vec_add1 (sa_vec, sa);
}
- /* *INDENT-ON* */
vec_foreach (sap, sa_vec)
{
}
vec_free (sa_vec);
- /* *INDENT-OFF* */
pool_foreach (sa, km->sais) {
if (ikev2_sa_sw_if_match (sa, sw_if_index))
vec_add1 (ispi_vec, sa->ispi);
}
- /* *INDENT-ON* */
vec_foreach (ispi, ispi_vec)
{
if (is_add)
return 0;
- /* *INDENT-OFF* */
pool_foreach (p, km->profiles) {
if (p->responder.sw_if_index == sw_if_index)
ikev2_sa_del (p, sw_if_index);
}
- /* *INDENT-ON* */
return 0;
}
ikev2_init (vlib_main_t * vm)
{
ikev2_main_t *km = &ikev2_main;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
- int thread_id;
clib_memset (km, 0, sizeof (ikev2_main_t));
+
+ km->log_level = IKEV2_LOG_ERROR;
+ km->log_class = vlib_log_register_class ("ikev2", 0);
+
km->vnet_main = vnet_get_main ();
km->vlib_main = vm;
km->liveness_period = IKEV2_LIVENESS_PERIOD_CHECK;
km->liveness_max_retries = IKEV2_LIVENESS_RETRIES;
- ikev2_crypto_init (km);
-
- mhash_init_vec_string (&km->profile_index_by_name, sizeof (uword));
- vec_validate_aligned (km->per_thread_data, tm->n_vlib_mains - 1,
- CLIB_CACHE_LINE_BYTES);
- for (thread_id = 0; thread_id < tm->n_vlib_mains; thread_id++)
- {
- ikev2_main_per_thread_data_t *ptd =
- vec_elt_at_index (km->per_thread_data, thread_id);
-
- ptd->sa_by_rspi = hash_create (0, sizeof (uword));
-
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
- ptd->evp_ctx = EVP_CIPHER_CTX_new ();
- ptd->hmac_ctx = HMAC_CTX_new ();
-#else
- EVP_CIPHER_CTX_init (&ptd->_evp_ctx);
- ptd->evp_ctx = &ptd->_evp_ctx;
- HMAC_CTX_init (&(ptd->_hmac_ctx));
- ptd->hmac_ctx = &ptd->_hmac_ctx;
-#endif
- }
-
- km->sa_by_ispi = hash_create (0, sizeof (uword));
- km->sw_if_indices = hash_create (0, 0);
- km->udp_ports = hash_create (0, sizeof (uword));
-
- udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip4.index, 1);
- udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip6.index, 0);
- udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip4.index, 1);
- udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip6.index, 0);
-
- vlib_punt_hdl_t punt_hdl = vlib_punt_client_register ("ikev2-ip4-natt");
- vlib_punt_register (punt_hdl, ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0],
- "ikev2-ip4-natt");
- ikev2_cli_reference ();
-
- km->log_level = IKEV2_LOG_ERROR;
- km->log_class = vlib_log_register_class ("ikev2", 0);
return 0;
}
-/* *INDENT-OFF* */
-VLIB_INIT_FUNCTION (ikev2_init) =
-{
- .runs_after = VLIB_INITS("ipsec_init", "ipsec_punt_init"),
+VLIB_INIT_FUNCTION (ikev2_init) = {
+ .runs_after = VLIB_INITS ("ipsec_init", "ipsec_punt_init"),
};
-/* *INDENT-ON* */
static u8
ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa,
ip_addr_bytes (&sa->iaddr));
}
- /* *INDENT-OFF* */
ipip_tunnel_key_t key = {
.src = local_ip,
.dst = remote_ip,
.transport = IPIP_TRANSPORT_IP4,
.fib_index = 0,
};
- /* *INDENT-ON* */
ipip = ipip_tunnel_db_find (&key);
ikev2_sa_t *sa;
if (fchild)
break;
- /* *INDENT-OFF* */
pool_foreach (sa, tkm->sas) {
fchild = ikev2_sa_get_child(sa, ipsec_sa->spi, IKEV2_PROTOCOL_ESP, 1);
if (fchild)
break;
}
}
- /* *INDENT-ON* */
}
vlib_get_combined_counter (&ipsec_sa_counters,
ipsec_sa->stat_index, &counts);
}
static void
-ikev2_process_pending_sa_init_one (ikev2_main_t * km, ikev2_sa_t * sa)
+ikev2_process_pending_sa_init_one (vlib_main_t *vm, ikev2_main_t *km,
+ ikev2_sa_t *sa)
{
ikev2_profile_t *p;
u32 bi0;
u8 *nat_sha, *np;
+ p = pool_elt_at_index (km->profiles, sa->profile_index);
+
+ if (!p->responder.is_resolved)
+ {
+ clib_error_t *r = ikev2_resolve_responder_hostname (vm, &p->responder);
+ if (r)
+ {
+ clib_error_free (r);
+ return;
+ }
+
+ if (!p->responder.is_resolved)
+ return;
+
+ ip_address_copy (&sa->raddr, &p->responder.addr);
+
+ /* update nat detection destination hash */
+ np = ikev2_find_ike_notify_payload (
+ (ike_header_t *) sa->last_sa_init_req_packet_data,
+ IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP);
+ if (np)
+ {
+ nat_sha = ikev2_compute_nat_sha1 (
+ clib_host_to_net_u64 (sa->ispi), clib_host_to_net_u64 (sa->rspi),
+ &sa->raddr, clib_host_to_net_u16 (sa->dst_port));
+ clib_memcpy_fast (np, nat_sha, vec_len (nat_sha));
+ vec_free (nat_sha);
+ }
+ }
if (ip_address_is_zero (&sa->iaddr))
{
- p = pool_elt_at_index (km->profiles, sa->profile_index);
if (!ikev2_get_if_address (p->responder.sw_if_index,
ip_addr_version (&p->responder.addr),
&sa->iaddr))
}
static void
-ikev2_process_pending_sa_init (ikev2_main_t * km)
+ikev2_process_pending_sa_init (vlib_main_t *vm, ikev2_main_t *km)
{
u32 sai;
u64 ispi;
ikev2_sa_t *sa;
- /* *INDENT-OFF* */
hash_foreach (ispi, sai, km->sa_by_ispi,
({
sa = pool_elt_at_index (km->sais, sai);
if (sa->init_response_received)
continue;
- ikev2_process_pending_sa_init_one (km, sa);
+ ikev2_process_pending_sa_init_one (vm, km, sa);
}));
- /* *INDENT-ON* */
}
static void
ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
ike0->flags = 0;
sa->last_init_msg_id += 1;
- len = ikev2_generate_message (b0, sa, ike0, 0, 0);
+ len = ikev2_generate_message (b0, sa, ike0, 0, 0, 0);
if (~0 == len)
return;
km->dpd_disabled = 1;
}
-static_always_inline int
-ikev2_mngr_process_responder_sas (ikev2_sa_t * sa)
+static int
+ikev2_mngr_process_responder_sas (ikev2_sa_t *sa)
{
ikev2_main_t *km = &ikev2_main;
vlib_main_t *vm = km->vlib_main;
vlib_frame_t * f)
{
ikev2_main_t *km = &ikev2_main;
- ipsec_main_t *im = &ipsec_main;
ikev2_profile_t *p;
ikev2_child_sa_t *c;
u32 *sai;
+ /* lazy init will wake it up */
+ vlib_process_wait_for_event (vm);
+
while (1)
{
vlib_process_wait_for_event_or_clock (vm, 2);
ikev2_sa_t *sa;
u32 *to_be_deleted = 0;
- /* *INDENT-OFF* */
pool_foreach (sa, tkm->sas) {
ikev2_child_sa_t *c;
u8 del_old_ids = 0;
- if (sa->state != IKEV2_STATE_AUTHENTICATED)
- continue;
+ if (sa->state == IKEV2_STATE_SA_INIT)
+ {
+ if (vec_len (sa->childs) > 0)
+ vec_add1 (to_be_deleted, sa - tkm->sas);
+ }
+ else if (sa->state != IKEV2_STATE_AUTHENTICATED)
+ continue;
- if (sa->old_remote_id_present && 0 > sa->old_id_expiration)
- {
- sa->old_remote_id_present = 0;
- del_old_ids = 1;
- }
- else
- sa->old_id_expiration -= 1;
+ if (sa->old_remote_id_present && 0 > sa->old_id_expiration)
+ {
+ sa->old_remote_id_present = 0;
+ del_old_ids = 1;
+ }
+ else
+ sa->old_id_expiration -= 1;
- vec_foreach (c, sa->childs)
- ikev2_mngr_process_child_sa(sa, c, del_old_ids);
+ vec_foreach (c, sa->childs)
+ ikev2_mngr_process_child_sa (sa, c, del_old_ids);
- if (!km->dpd_disabled && ikev2_mngr_process_responder_sas (sa))
- vec_add1 (to_be_deleted, sa - tkm->sas);
- }
- /* *INDENT-ON* */
+ if (!km->dpd_disabled && ikev2_mngr_process_responder_sas (sa))
+ vec_add1 (to_be_deleted, sa - tkm->sas);
+ }
vec_foreach (sai, to_be_deleted)
{
sa = pool_elt_at_index (tkm->sas, sai[0]);
- u8 reinitiate = (sa->is_initiator && sa->profile_index != ~0);
+ const u32 profile_index = sa->profile_index;
+ const int reinitiate = (sa->is_initiator && profile_index != ~0);
vec_foreach (c, sa->childs)
{
ikev2_delete_tunnel_interface (km->vnet_main, sa, c);
if (reinitiate)
{
- p = pool_elt_at_index (km->profiles, sa->profile_index);
+ p = pool_elt_at_index (km->profiles, profile_index);
if (p)
{
clib_error_t *e = ikev2_initiate_sa_init (vm, p->name);
/* process ipsec sas */
ipsec_sa_t *sa;
- /* *INDENT-OFF* */
- pool_foreach (sa, im->sad) {
- ikev2_mngr_process_ipsec_sa(sa);
- }
- /* *INDENT-ON* */
+ pool_foreach (sa, ipsec_sa_pool)
+ {
+ ikev2_mngr_process_ipsec_sa (sa);
+ }
- ikev2_process_pending_sa_init (km);
+ ikev2_process_pending_sa_init (vm, km);
}
return 0;
}
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ikev2_mngr_process_node, static) = {
.function = ikev2_mngr_process_fn,
.type = VLIB_NODE_TYPE_PROCESS,
"ikev2-manager-process",
};
+static void
+ikev2_lazy_init (ikev2_main_t *km)
+{
+ vlib_thread_main_t *tm = vlib_get_thread_main ();
+ int thread_id;
+
+ if (km->lazy_init_done)
+ return;
+
+ ikev2_crypto_init (km);
+
+ mhash_init_vec_string (&km->profile_index_by_name, sizeof (uword));
+
+ vec_validate_aligned (km->per_thread_data, tm->n_vlib_mains - 1,
+ CLIB_CACHE_LINE_BYTES);
+ for (thread_id = 0; thread_id < tm->n_vlib_mains; thread_id++)
+ {
+ ikev2_main_per_thread_data_t *ptd =
+ vec_elt_at_index (km->per_thread_data, thread_id);
+
+ ptd->sa_by_rspi = hash_create (0, sizeof (uword));
+
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ ptd->evp_ctx = EVP_CIPHER_CTX_new ();
+ ptd->hmac_ctx = HMAC_CTX_new ();
+#else
+ EVP_CIPHER_CTX_init (&ptd->_evp_ctx);
+ ptd->evp_ctx = &ptd->_evp_ctx;
+ HMAC_CTX_init (&(ptd->_hmac_ctx));
+ ptd->hmac_ctx = &ptd->_hmac_ctx;
+#endif
+ }
+
+ km->sa_by_ispi = hash_create (0, sizeof (uword));
+ km->sw_if_indices = hash_create (0, 0);
+
+ km->punt_hdl = vlib_punt_client_register ("ikev2");
+
+ km->dns_resolve_name_ptr =
+ vlib_get_plugin_symbol ("dns_plugin.so", "dns_resolve_name");
+ if (!km->dns_resolve_name_ptr)
+ ikev2_log_error ("cannot load symbols from dns plugin");
+
+ /* wake up ikev2 process */
+ vlib_process_signal_event (vlib_get_first_main (),
+ ikev2_mngr_process_node.index, 0, 0);
+
+ km->lazy_init_done = 1;
+}
+
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
.description = "Internet Key Exchange (IKEv2) Protocol",
};
-/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff