/* *------------------------------------------------------------------ * ipsec_api.c - ipsec api * * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------ */ #include <vnet/vnet.h> #include <vlibmemory/api.h> #include <vnet/interface.h> #include <vnet/api_errno.h> #include <vnet/ip/ip.h> #include <vnet/vnet_msg_enum.h> #if WITH_LIBSSL > 0 #include <vnet/ipsec/ipsec.h> #include <vnet/ipsec/ikev2.h> #endif /* IPSEC */ #define vl_typedefs /* define message structures */ #include <vnet/vnet_all_api_h.h> #undef vl_typedefs #define vl_endianfun /* define message structures */ #include <vnet/vnet_all_api_h.h> #undef vl_endianfun /* instantiate all the print functions we know about */ #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) #define vl_printfun #include <vnet/vnet_all_api_h.h> #undef vl_printfun #include <vlibapi/api_helper_macros.h> #define foreach_vpe_api_msg \ _(IPSEC_SPD_ADD_DEL, ipsec_spd_add_del) \ _(IPSEC_INTERFACE_ADD_DEL_SPD, ipsec_interface_add_del_spd) \ _(IPSEC_SPD_ADD_DEL_ENTRY, ipsec_spd_add_del_entry) \ _(IPSEC_SAD_ADD_DEL_ENTRY, ipsec_sad_add_del_entry) \ _(IPSEC_SA_SET_KEY, ipsec_sa_set_key) \ _(IPSEC_SPD_DUMP, ipsec_spd_dump) \ _(IKEV2_PROFILE_ADD_DEL, ikev2_profile_add_del) \ _(IKEV2_PROFILE_SET_AUTH, ikev2_profile_set_auth) \ _(IKEV2_PROFILE_SET_ID, ikev2_profile_set_id) \ _(IKEV2_PROFILE_SET_TS, ikev2_profile_set_ts) \ _(IKEV2_SET_LOCAL_KEY, ikev2_set_local_key) static void vl_api_ipsec_spd_add_del_t_handler (vl_api_ipsec_spd_add_del_t * mp) { #if WITH_LIBSSL == 0 clib_warning ("unimplemented"); #else vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_spd_add_del_reply_t *rmp; int rv; #if DPDK > 0 rv = ipsec_add_del_spd (vm, ntohl (mp->spd_id), mp->is_add); #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif REPLY_MACRO (VL_API_IPSEC_SPD_ADD_DEL_REPLY); #endif } static void vl_api_ipsec_interface_add_del_spd_t_handler (vl_api_ipsec_interface_add_del_spd_t * mp) { vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_interface_add_del_spd_reply_t *rmp; int rv; u32 sw_if_index __attribute__ ((unused)); u32 spd_id __attribute__ ((unused)); sw_if_index = ntohl (mp->sw_if_index); spd_id = ntohl (mp->spd_id); VALIDATE_SW_IF_INDEX (mp); #if WITH_LIBSSL > 0 rv = ipsec_set_interface_spd (vm, sw_if_index, spd_id, mp->is_add); #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_IPSEC_INTERFACE_ADD_DEL_SPD_REPLY); } static void vl_api_ipsec_spd_add_del_entry_t_handler (vl_api_ipsec_spd_add_del_entry_t * mp) { vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_spd_add_del_entry_reply_t *rmp; int rv; #if WITH_LIBSSL > 0 ipsec_policy_t p; memset (&p, 0, sizeof (p)); p.id = ntohl (mp->spd_id); p.priority = ntohl (mp->priority); p.is_outbound = mp->is_outbound; p.is_ipv6 = mp->is_ipv6; if (mp->is_ipv6 || mp->is_ip_any) { clib_memcpy (&p.raddr.start, mp->remote_address_start, 16); clib_memcpy (&p.raddr.stop, mp->remote_address_stop, 16); clib_memcpy (&p.laddr.start, mp->local_address_start, 16); clib_memcpy (&p.laddr.stop, mp->local_address_stop, 16); } else { clib_memcpy (&p.raddr.start.ip4.data, mp->remote_address_start, 4); clib_memcpy (&p.raddr.stop.ip4.data, mp->remote_address_stop, 4); clib_memcpy (&p.laddr.start.ip4.data, mp->local_address_start, 4); clib_memcpy (&p.laddr.stop.ip4.data, mp->local_address_stop, 4); } p.protocol = mp->protocol; p.rport.start = ntohs (mp->remote_port_start); p.rport.stop = ntohs (mp->remote_port_stop); p.lport.start = ntohs (mp->local_port_start); p.lport.stop = ntohs (mp->local_port_stop); /* policy action resolve unsupported */ if (mp->policy == IPSEC_POLICY_ACTION_RESOLVE) { clib_warning ("unsupported action: 'resolve'"); rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; } p.policy = mp->policy; p.sa_id = ntohl (mp->sa_id); rv = ipsec_add_del_policy (vm, &p, mp->is_add); if (rv) goto out; if (mp->is_ip_any) { p.is_ipv6 = 1; rv = ipsec_add_del_policy (vm, &p, mp->is_add); } #else rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; #endif out: REPLY_MACRO (VL_API_IPSEC_SPD_ADD_DEL_ENTRY_REPLY); } static void vl_api_ipsec_sad_add_del_entry_t_handler (vl_api_ipsec_sad_add_del_entry_t * mp) { vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_sad_add_del_entry_reply_t *rmp; int rv; #if WITH_LIBSSL > 0 ipsec_main_t *im = &ipsec_main; ipsec_sa_t sa; memset (&sa, 0, sizeof (sa)); sa.id = ntohl (mp->sad_id); sa.spi = ntohl (mp->spi); /* security protocol AH unsupported */ if (mp->protocol == IPSEC_PROTOCOL_AH) { clib_warning ("unsupported security protocol 'AH'"); rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; } sa.protocol = mp->protocol; /* check for unsupported crypto-alg */ if (mp->crypto_algorithm < IPSEC_CRYPTO_ALG_AES_CBC_128 || mp->crypto_algorithm >= IPSEC_CRYPTO_N_ALG) { clib_warning ("unsupported crypto-alg: '%U'", format_ipsec_crypto_alg, mp->crypto_algorithm); rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; } sa.crypto_alg = mp->crypto_algorithm; sa.crypto_key_len = mp->crypto_key_length; clib_memcpy (&sa.crypto_key, mp->crypto_key, sizeof (sa.crypto_key)); /* check for unsupported integ-alg */ if (mp->integrity_algorithm < IPSEC_INTEG_ALG_NONE || mp->integrity_algorithm >= IPSEC_INTEG_N_ALG) { clib_warning ("unsupported integ-alg: '%U'", format_ipsec_integ_alg, mp->integrity_algorithm); rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; } sa.integ_alg = mp->integrity_algorithm; sa.integ_key_len = mp->integrity_key_length; clib_memcpy (&sa.integ_key, mp->integrity_key, sizeof (sa.integ_key)); sa.use_esn = mp->use_extended_sequence_number; sa.is_tunnel = mp->is_tunnel; sa.is_tunnel_ip6 = mp->is_tunnel_ipv6; if (sa.is_tunnel_ip6) { clib_memcpy (&sa.tunnel_src_addr, mp->tunnel_src_address, 16); clib_memcpy (&sa.tunnel_dst_addr, mp->tunnel_dst_address, 16); } else { clib_memcpy (&sa.tunnel_src_addr.ip4.data, mp->tunnel_src_address, 4); clib_memcpy (&sa.tunnel_dst_addr.ip4.data, mp->tunnel_dst_address, 4); } ASSERT (im->cb.check_support_cb); clib_error_t *err = im->cb.check_support_cb (&sa); if (err) { clib_warning ("%s", err->what); rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; } rv = ipsec_add_del_sa (vm, &sa, mp->is_add); #else rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; #endif out: REPLY_MACRO (VL_API_IPSEC_SAD_ADD_DEL_ENTRY_REPLY); } static void send_ipsec_spd_details (ipsec_policy_t * p, unix_shared_memory_queue_t * q, u32 context) { vl_api_ipsec_spd_details_t *mp; mp = vl_msg_api_alloc (sizeof (*mp)); memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IPSEC_SPD_DETAILS); mp->context = context; mp->spd_id = htonl (p->id); mp->priority = htonl (p->priority); mp->is_outbound = p->is_outbound; mp->is_ipv6 = p->is_ipv6; if (p->is_ipv6) { memcpy (mp->local_start_addr, &p->laddr.start.ip6, 16); memcpy (mp->local_stop_addr, &p->laddr.stop.ip6, 16); memcpy (mp->remote_start_addr, &p->raddr.start.ip6, 16); memcpy (mp->remote_stop_addr, &p->raddr.stop.ip6, 16); } else { memcpy (mp->local_start_addr, &p->laddr.start.ip4, 4); memcpy (mp->local_stop_addr, &p->laddr.stop.ip4, 4); memcpy (mp->remote_start_addr, &p->raddr.start.ip4, 4); memcpy (mp->remote_stop_addr, &p->raddr.stop.ip4, 4); } mp->local_start_port = htons (p->lport.start); mp->local_stop_port = htons (p->lport.stop); mp->remote_start_port = htons (p->rport.start); mp->remote_stop_port = htons (p->rport.stop); mp->protocol = p->protocol; mp->policy = p->policy; mp->sa_id = htonl (p->sa_id); mp->bytes = clib_host_to_net_u64 (p->counter.bytes); mp->packets = clib_host_to_net_u64 (p->counter.packets); vl_msg_api_send_shmem (q, (u8 *) & mp); } static void vl_api_ipsec_spd_dump_t_handler (vl_api_ipsec_spd_dump_t * mp) { unix_shared_memory_queue_t *q; ipsec_main_t *im = &ipsec_main; ipsec_policy_t *policy; ipsec_spd_t *spd; uword *p; u32 spd_index; #if WITH_LIBSSL > 0 q = vl_api_client_index_to_input_queue (mp->client_index); if (q == 0) return; p = hash_get (im->spd_index_by_spd_id, ntohl (mp->spd_id)); if (!p) return; spd_index = p[0]; spd = pool_elt_at_index (im->spds, spd_index); /* *INDENT-OFF* */ pool_foreach (policy, spd->policies, ({ if (mp->sa_id == ~(0) || ntohl (mp->sa_id) == policy->sa_id) send_ipsec_spd_details (policy, q, mp->context);} )); /* *INDENT-ON* */ #else clib_warning ("unimplemented"); #endif } static void vl_api_ipsec_sa_set_key_t_handler (vl_api_ipsec_sa_set_key_t * mp) { vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_sa_set_key_reply_t *rmp; int rv; #if WITH_LIBSSL > 0 ipsec_sa_t sa; sa.id = ntohl (mp->sa_id); sa.crypto_key_len = mp->crypto_key_length; clib_memcpy (&sa.crypto_key, mp->crypto_key, sizeof (sa.crypto_key)); sa.integ_key_len = mp->integrity_key_length; clib_memcpy (&sa.integ_key, mp->integrity_key, sizeof (sa.integ_key)); rv = ipsec_set_sa_key (vm, &sa); #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif REPLY_MACRO (VL_API_IPSEC_SA_SET_KEY_REPLY); } static void vl_api_ikev2_profile_add_del_t_handler (vl_api_ikev2_profile_add_del_t * mp) { vl_api_ikev2_profile_add_del_reply_t *rmp; int rv = 0; #if WITH_LIBSSL > 0 vlib_main_t *vm = vlib_get_main (); clib_error_t *error; u8 *tmp = format (0, "%s", mp->name); error = ikev2_add_del_profile (vm, tmp, mp->is_add); vec_free (tmp); if (error) rv = VNET_API_ERROR_UNSPECIFIED; #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif REPLY_MACRO (VL_API_IKEV2_PROFILE_ADD_DEL_REPLY); } static void vl_api_ikev2_profile_set_auth_t_handler (vl_api_ikev2_profile_set_auth_t * mp) { vl_api_ikev2_profile_set_auth_reply_t *rmp; int rv = 0; #if WITH_LIBSSL > 0 vlib_main_t *vm = vlib_get_main (); clib_error_t *error; u8 *tmp = format (0, "%s", mp->name); u8 *data = vec_new (u8, mp->data_len); clib_memcpy (data, mp->data, mp->data_len); error = ikev2_set_profile_auth (vm, tmp, mp->auth_method, data, mp->is_hex); vec_free (tmp); vec_free (data); if (error) rv = VNET_API_ERROR_UNSPECIFIED; #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_AUTH_REPLY); } static void vl_api_ikev2_profile_set_id_t_handler (vl_api_ikev2_profile_set_id_t * mp) { vl_api_ikev2_profile_add_del_reply_t *rmp; int rv = 0; #if WITH_LIBSSL > 0 vlib_main_t *vm = vlib_get_main (); clib_error_t *error; u8 *tmp = format (0, "%s", mp->name); u8 *data = vec_new (u8, mp->data_len); clib_memcpy (data, mp->data, mp->data_len); error = ikev2_set_profile_id (vm, tmp, mp->id_type, data, mp->is_local); vec_free (tmp); vec_free (data); if (error) rv = VNET_API_ERROR_UNSPECIFIED; #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_ID_REPLY); } static void vl_api_ikev2_profile_set_ts_t_handler (vl_api_ikev2_profile_set_ts_t * mp) { vl_api_ikev2_profile_set_ts_reply_t *rmp; int rv = 0; #if WITH_LIBSSL > 0 vlib_main_t *vm = vlib_get_main (); clib_error_t *error; u8 *tmp = format (0, "%s", mp->name); error = ikev2_set_profile_ts (vm, tmp, mp->proto, mp->start_port, mp->end_port, (ip4_address_t) mp->start_addr, (ip4_address_t) mp->end_addr, mp->is_local); vec_free (tmp); if (error) rv = VNET_API_ERROR_UNSPECIFIED; #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_TS_REPLY); } static void vl_api_ikev2_set_local_key_t_handler (vl_api_ikev2_set_local_key_t * mp) { vl_api_ikev2_profile_set_ts_reply_t *rmp; int rv = 0; #if WITH_LIBSSL > 0 vlib_main_t *vm = vlib_get_main (); clib_error_t *error; error = ikev2_set_local_key (vm, mp->key_file); if (error) rv = VNET_API_ERROR_UNSPECIFIED; #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif REPLY_MACRO (VL_API_IKEV2_SET_LOCAL_KEY_REPLY); } /* * ipsec_api_hookup * Add vpe's API message handlers to the table. * vlib has alread mapped shared memory and * added the client registration handlers. * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() */ #define vl_msg_name_crc_list #include <vnet/vnet_all_api_h.h> #undef vl_msg_name_crc_list static void setup_message_id_table (api_main_t * am) { #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); foreach_vl_msg_name_crc_ipsec; #undef _ } static clib_error_t * ipsec_api_hookup (vlib_main_t * vm) { api_main_t *am = &api_main; #define _(N,n) \ vl_msg_api_set_handlers(VL_API_##N, #n, \ vl_api_##n##_t_handler, \ vl_noop_handler, \ vl_api_##n##_t_endian, \ vl_api_##n##_t_print, \ sizeof(vl_api_##n##_t), 1); foreach_vpe_api_msg; #undef _ /* * Set up the (msg_name, crc, message-id) table */ setup_message_id_table (am); return 0; } VLIB_API_INIT_FUNCTION (ipsec_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */