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;
p += plen;
}
- if (sa->is_initiator && proposal
- && proposal->protocol_id == IKEV2_PROTOCOL_ESP)
+ if (!proposal || proposal->protocol_id != IKEV2_PROTOCOL_ESP)
+ 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->protocol_id = proposal->protocol_id;
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 (rekeying)
{
- 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->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);
+ }
+ 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);
}
- 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);
return 1;
}
}
-static void
-ikev2_sa_auth (ikev2_sa_t * sa)
+static ikev2_profile_t *
+ikev2_select_profile (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)
+ {
+ /* check id */
+ if (!ikev2_is_id_equal (&p->rem_id, id_rem) ||
+ !ikev2_is_id_equal (&p->loc_id, id_loc))
+ 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);
+ 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;
- }
- 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 (ikev2_verify_sign (p->auth.key, sa_auth->data, authmsg) == 1)
+ {
+ ikev2_set_state (sa, IKEV2_STATE_AUTHENTICATED);
+ ret = p;
+ break;
+ }
+ else
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR,
+ "cert verification failed! ispi %lx", sa->ispi);
+ }
+ }
+ }
+ vec_free (authmsg);
+ return ret;
+}
- if (ikev2_verify_sign(p->auth.key, sa_auth->data, authmsg) == 1)
- {
- ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED);
- sel_p = p;
- break;
- }
- else
- {
- ikev2_elog_uint (IKEV2_LOG_ERROR,
- "cert verification failed! ispi %lx", sa->ispi);
- }
- }
+static void
+ikev2_sa_auth (ikev2_sa_t *sa)
+{
+ ikev2_main_t *km = &ikev2_main;
+ ikev2_profile_t *sel_p = 0;
+ ikev2_sa_transform_t *tr_prf;
+ u8 *psk, *authmsg, *key_pad;
- vec_free(auth);
- vec_free(psk);
- }
- /* *INDENT-ON* */
+ 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);
+ sel_p = ikev2_select_profile (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)
{
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);
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);
}
vec_free (data);
}
+ 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);
+ 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);
+ vec_del1 (sa->new_child, 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
{
- 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;
- }
- else
- {
- ikev2_payload_add_notify (chain,
- IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS,
- 0);
- }
+ ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS,
+ 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;
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);
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;
- sa0->last_init_msg_id = 1;
slen =
ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
if (~0 == slen)
1);
}
}
+ else if (sa0->new_child)
+ {
+ 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);
+ 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
static_always_inline 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);
p->ipsec_over_udp_port = port;
return 0;
}
static_always_inline 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);
p->ipsec_over_udp_port = IPSEC_UDP_PORT_NONE;
}
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;
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);
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;
/* process ipsec sas */
ipsec_sa_t *sa;
/* *INDENT-OFF* */
- pool_foreach (sa, im->sad) {
- ikev2_mngr_process_ipsec_sa(sa);
- }
+ pool_foreach (sa, ipsec_sa_pool)
+ {
+ ikev2_mngr_process_ipsec_sa (sa);
+ }
/* *INDENT-ON* */
ikev2_process_pending_sa_init (km);
Code Review / vpp.git / blobdiff