#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>
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);
}
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);
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;
+ int rv;
+
+ if (!km->dns_resolve_name)
+ return clib_error_return (0, "cannot load symbols from dns plugin");
+
+ t0->request_type = DNS_API_PENDING_NAME_TO_IP;
+ rv = km->dns_resolve_name (r->hostname, &ep, t0, rn);
+ 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-ip4-natt");
ikev2_cli_reference ();
+ km->dns_resolve_name =
+ vlib_get_plugin_symbol ("dns_plugin.so", "dns_resolve_name");
+ if (!km->dns_resolve_name)
+ ikev2_log_error ("cannot load symbols from dns plugin");
+
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", "dns_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* */
}
}
/* *INDENT-ON* */
- ikev2_process_pending_sa_init (km);
+ ikev2_process_pending_sa_init (vm, km);
}
return 0;
}
Code Review / vpp.git / blobdiff