#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>
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));
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_child_keys (ikev2_sa_t * sa, ikev2_child_sa_t * child)
+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;
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 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_child_sa_t *child_sa;
u32 dlen = 0, src;
u16 plen;
+ const u8 *nonce = 0;
+ int nonce_len = 0;
+ ikev2_sa_t sar;
+
+ clib_memset (&sar, 0, sizeof (sar));
if (sa->is_initiator)
src = ip_addr_v4 (&sa->raddr).as_u32;
{
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 (!proposal || proposal->protocol_id != IKEV2_PROTOCOL_ESP)
+ if (!proposal || proposal->protocol_id != IKEV2_PROTOCOL_ESP || !nonce)
goto cleanup_and_exit;
if (sa->is_initiator)
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)
{
}
else
{
- if (rekeying)
+ if (n)
{
child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1);
if (!child_sa)
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;
- rekey->i_proposal = proposal;
- rekey->r_proposal =
- ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
- /* 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);
+ 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
{
/* create new child SA */
vec_add2 (sa->new_child, rekey, 1);
- rekey->i_proposal = proposal;
- rekey->r_proposal =
- ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
- /* 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);
+ 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);
+ }
}
- rekey->tsi = tsi;
- rekey->tsr = tsr;
}
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)
{
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;
pool_foreach (p, km->profiles)
{
- /* 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;
if (sa_auth->method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
if (sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
{
- vec_free (sa->i_auth.data);
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);
.t_mode = TUNNEL_MODE_P2P,
.t_table_id = 0,
.t_hop_limit = 255,
- .t_src = a->local_ip,
- .t_dst = a->remote_ip,
+ .t_src = a->remote_ip,
+ .t_dst = a->local_ip,
};
tunnel_t tun_out = {
.t_flags = TUNNEL_FLAG_NONE,
.t_mode = TUNNEL_MODE_P2P,
.t_table_id = 0,
.t_hop_limit = 255,
- .t_src = a->remote_ip,
- .t_dst = a->local_ip,
+ .t_src = a->local_ip,
+ .t_dst = a->remote_ip,
};
if (~0 == a->sw_if_index)
}
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;
}
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;
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_create_child_resp (ikev2_sa_t *sa, ikev2_rekey_t *rekey,
+ ikev2_payload_chain_t *chain)
+{
+ if (rekey->notify_type)
+ {
+ if (rekey->notify_type == IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD)
+ ikev2_add_invalid_ke_payload (sa, chain);
+ else
+ ikev2_payload_add_notify (chain, rekey->notify_type, 0);
+ return;
+ }
+
+ ikev2_payload_add_sa (chain, rekey->r_proposal);
+ 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_stats_t *stats)
}
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)
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_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
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_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
}
else 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);
+ ikev2_add_create_child_resp (sa, &sa->rekey[0], chain);
vec_del1 (sa->rekey, 0);
}
else if (vec_len (sa->new_child) > 0)
{
- ikev2_payload_add_sa (chain, sa->new_child[0].r_proposal);
- ikev2_payload_add_nonce (chain, sa->r_nonce);
- ikev2_payload_add_ts (chain, sa->new_child[0].tsi,
- IKEV2_PAYLOAD_TSI);
- ikev2_payload_add_ts (chain, sa->new_child[0].tsr,
- IKEV2_PAYLOAD_TSR);
+ ikev2_add_create_child_resp (sa, &sa->new_child[0], chain);
vec_del1 (sa->new_child, 0);
}
else if (sa->unsupported_cp)
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
+static void
ikev2_set_ip_address (ikev2_sa_t *sa, const void *iaddr, const void *raddr,
const ip_address_family_t af)
{
s->n_sa_auth_req);
}
-static_always_inline uword
+static uword
ikev2_node_internal (vlib_main_t *vm, vlib_node_runtime_t *node,
vlib_frame_t *frame, u8 is_ip4, u8 natt)
{
ikev2_initial_contact_cleanup (ptd, sa0);
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)
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))
{
1);
}
}
- else if (sa0->new_child)
+ else if (vec_len (sa0->new_child) > 0)
{
ikev2_child_sa_t *c;
vec_add2 (sa0->childs, c, 1);
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);
+ c - sa0->childs, 0,
+ sa0->new_child[0].kex);
if (ike_hdr_is_request (ike0))
{
ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
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)
{
- ipsec_register_udp_port (port);
+ 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)
{
if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
return;
- ipsec_unregister_udp_port (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;
}
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;
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;
}
sizeof (sa.childs[0].i_proposals[0].spi));
/* 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;
}
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 */
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);
-
- 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 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;
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* */
}
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;
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);
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);
}
/* *INDENT-ON* */
- ikev2_process_pending_sa_init (km);
+ ikev2_process_pending_sa_init (vm, km);
}
return 0;
}
"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",
Code Review / vpp.git / blobdiff