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Diffstat (limited to 'src/plugins/ikev2/ikev2_priv.h')
| -rw-r--r-- | src/plugins/ikev2/ikev2_priv.h | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/src/plugins/ikev2/ikev2_priv.h b/src/plugins/ikev2/ikev2_priv.h new file mode 100644 index 00000000000..cfdc24f797a --- /dev/null +++ b/src/plugins/ikev2/ikev2_priv.h @@ -0,0 +1,364 @@ +/* + * Copyright (c) 2015 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. + */ +#ifndef __included_ikev2_priv_h__ +#define __included_ikev2_priv_h__ + +#include <vnet/vnet.h> +#include <vnet/ip/ip.h> +#include <vnet/ethernet/ethernet.h> + +#include <plugins/ikev2/ikev2.h> + +#include <vppinfra/hash.h> +#include <vppinfra/elog.h> +#include <vppinfra/error.h> + +#include <openssl/rand.h> +#include <openssl/dh.h> +#include <openssl/hmac.h> +#include <openssl/evp.h> + +#define IKEV2_DEBUG_PAYLOAD 1 + +#if IKEV2_DEBUG_PAYLOAD == 1 +#define DBG_PLD(my_args...) clib_warning(my_args) +#else +#define DBG_PLD(my_args...) +#endif + +typedef enum +{ + IKEV2_STATE_UNKNOWN, + IKEV2_STATE_SA_INIT, + IKEV2_STATE_DELETED, + IKEV2_STATE_AUTH_FAILED, + IKEV2_STATE_AUTHENTICATED, + IKEV2_STATE_NOTIFY_AND_DELETE, + IKEV2_STATE_TS_UNACCEPTABLE, + IKEV2_STATE_NO_PROPOSAL_CHOSEN, +} ikev2_state_t; + +typedef struct +{ + ikev2_auth_method_t method:8; + u8 *data; + u8 hex; /* hex encoding of the shared secret */ + EVP_PKEY *key; +} ikev2_auth_t; + +typedef enum +{ + IKEV2_DH_GROUP_MODP = 0, + IKEV2_DH_GROUP_ECP = 1, +} ikev2_dh_group_t; + +typedef struct +{ + ikev2_transform_type_t type; + union + { + u16 transform_id; + ikev2_transform_encr_type_t encr_type:16; + ikev2_transform_prf_type_t prf_type:16; + ikev2_transform_integ_type_t integ_type:16; + ikev2_transform_dh_type_t dh_type:16; + ikev2_transform_esn_type_t esn_type:16; + }; + u8 *attrs; + u16 key_len; + u16 key_trunc; + u16 block_size; + u8 dh_group; + int nid; + const char *dh_p; + const char *dh_g; + const void *md; + const void *cipher; +} ikev2_sa_transform_t; + +typedef struct +{ + u8 proposal_num; + ikev2_protocol_id_t protocol_id:8; + u32 spi; + ikev2_sa_transform_t *transforms; +} ikev2_sa_proposal_t; + +typedef struct +{ + u8 ts_type; + u8 protocol_id; + u16 selector_len; + u16 start_port; + u16 end_port; + ip4_address_t start_addr; + ip4_address_t end_addr; +} ikev2_ts_t; + +typedef struct +{ + u32 sw_if_index; + ip4_address_t ip4; +} ikev2_responder_t; + +typedef struct +{ + ikev2_transform_encr_type_t crypto_alg; + ikev2_transform_integ_type_t integ_alg; + ikev2_transform_dh_type_t dh_type; + u32 crypto_key_size; +} ikev2_transforms_set; + + +typedef struct +{ + ikev2_id_type_t type:8; + u8 *data; +} ikev2_id_t; + +typedef struct +{ + /* sa proposals vectors */ + ikev2_sa_proposal_t *i_proposals; + ikev2_sa_proposal_t *r_proposals; + + /* Traffic Selectors */ + ikev2_ts_t *tsi; + ikev2_ts_t *tsr; + + /* keys */ + u8 *sk_ai; + u8 *sk_ar; + u8 *sk_ei; + u8 *sk_er; + + /* lifetime data */ + f64 time_to_expiration; + u8 is_expired; + i8 rekey_retries; +} ikev2_child_sa_t; + +typedef struct +{ + u8 protocol_id; + u32 spi; /*for ESP and AH SPI size is 4, for IKE size is 0 */ +} ikev2_delete_t; + +typedef struct +{ + u8 protocol_id; + u32 spi; + u32 ispi; + ikev2_sa_proposal_t *i_proposal; + ikev2_sa_proposal_t *r_proposal; + ikev2_ts_t *tsi; + ikev2_ts_t *tsr; +} ikev2_rekey_t; + +typedef struct +{ + u16 msg_type; + u8 protocol_id; + u32 spi; + u8 *data; +} ikev2_notify_t; + +typedef struct +{ + u8 *name; + u8 is_enabled; + + ikev2_auth_t auth; + ikev2_id_t loc_id; + ikev2_id_t rem_id; + ikev2_ts_t loc_ts; + ikev2_ts_t rem_ts; + ikev2_responder_t responder; + ikev2_transforms_set ike_ts; + ikev2_transforms_set esp_ts; + u64 lifetime; + u64 lifetime_maxdata; + u32 lifetime_jitter; + u32 handover; +} ikev2_profile_t; + +typedef struct +{ + ikev2_state_t state; + u8 unsupported_cp; + u8 initial_contact; + ip4_address_t iaddr; + ip4_address_t raddr; + u64 ispi; + u64 rspi; + u8 *i_nonce; + u8 *r_nonce; + + /* DH data */ + u16 dh_group; + u8 *dh_shared_key; + u8 *dh_private_key; + u8 *i_dh_data; + u8 *r_dh_data; + + /* sa proposals vectors */ + ikev2_sa_proposal_t *i_proposals; + ikev2_sa_proposal_t *r_proposals; + + /* keys */ + u8 *sk_d; + u8 *sk_ai; + u8 *sk_ar; + u8 *sk_ei; + u8 *sk_er; + u8 *sk_pi; + u8 *sk_pr; + + /* auth */ + ikev2_auth_t i_auth; + ikev2_auth_t r_auth; + + /* ID */ + ikev2_id_t i_id; + ikev2_id_t r_id; + + /* pending deletes */ + ikev2_delete_t *del; + + /* pending rekeyings */ + ikev2_rekey_t *rekey; + + /* packet data */ + u8 *last_sa_init_req_packet_data; + u8 *last_sa_init_res_packet_data; + + /* retransmit */ + u32 last_msg_id; + u8 *last_res_packet_data; + + u8 is_initiator; + u32 last_init_msg_id; + ikev2_profile_t *profile; + + ikev2_child_sa_t *childs; +} ikev2_sa_t; + + +typedef struct +{ + /* pool of IKEv2 Security Associations */ + ikev2_sa_t *sas; + + /* hash */ + uword *sa_by_rspi; +} ikev2_main_per_thread_data_t; + +typedef struct +{ + /* pool of IKEv2 profiles */ + ikev2_profile_t *profiles; + + /* vector of supported transform types */ + ikev2_sa_transform_t *supported_transforms; + + /* hash */ + mhash_t profile_index_by_name; + + /* local private key */ + EVP_PKEY *pkey; + + /* convenience */ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + /* pool of IKEv2 Security Associations created in initiator mode */ + ikev2_sa_t *sais; + /* hash */ + uword *sa_by_ispi; + + ikev2_main_per_thread_data_t *per_thread_data; + + /* API message ID base */ + u16 msg_id_base; +} ikev2_main_t; + +extern ikev2_main_t ikev2_main; + +void ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v); +ikev2_sa_transform_t *ikev2_sa_get_td_for_type (ikev2_sa_proposal_t * p, + ikev2_transform_type_t type); + +/* ikev2_crypto.c */ +v8 *ikev2_calc_prf (ikev2_sa_transform_t * tr, v8 * key, v8 * data); +u8 *ikev2_calc_prfplus (ikev2_sa_transform_t * tr, u8 * key, u8 * seed, + int len); +v8 *ikev2_calc_integr (ikev2_sa_transform_t * tr, v8 * key, u8 * data, + int len); +v8 *ikev2_decrypt_data (ikev2_sa_t * sa, u8 * data, int len); +int ikev2_encrypt_data (ikev2_sa_t * sa, v8 * src, u8 * dst); +void ikev2_generate_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t); +void ikev2_complete_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t); +int ikev2_verify_sign (EVP_PKEY * pkey, u8 * sigbuf, u8 * data); +u8 *ikev2_calc_sign (EVP_PKEY * pkey, u8 * data); +EVP_PKEY *ikev2_load_cert_file (u8 * file); +EVP_PKEY *ikev2_load_key_file (u8 * file); +void ikev2_crypto_init (ikev2_main_t * km); + +/* ikev2_payload.c */ +typedef struct +{ + u8 first_payload_type; + u16 last_hdr_off; + u8 *data; +} ikev2_payload_chain_t; + +#define ikev2_payload_new_chain(V) vec_validate (V, 0) +#define ikev2_payload_destroy_chain(V) do { \ + vec_free((V)->data); \ + vec_free(V); \ +} while (0) + +void ikev2_payload_add_notify (ikev2_payload_chain_t * c, u16 msg_type, + u8 * data); +void ikev2_payload_add_notify_2 (ikev2_payload_chain_t * c, u16 msg_type, + u8 * data, ikev2_notify_t * notify); +void ikev2_payload_add_sa (ikev2_payload_chain_t * c, + ikev2_sa_proposal_t * proposals); +void ikev2_payload_add_ke (ikev2_payload_chain_t * c, u16 dh_group, + u8 * dh_data); +void ikev2_payload_add_nonce (ikev2_payload_chain_t * c, u8 * nonce); +void ikev2_payload_add_id (ikev2_payload_chain_t * c, ikev2_id_t * id, + u8 type); +void ikev2_payload_add_auth (ikev2_payload_chain_t * c, ikev2_auth_t * auth); +void ikev2_payload_add_ts (ikev2_payload_chain_t * c, ikev2_ts_t * ts, + u8 type); +void ikev2_payload_add_delete (ikev2_payload_chain_t * c, ikev2_delete_t * d); +void ikev2_payload_chain_add_padding (ikev2_payload_chain_t * c, int bs); +void ikev2_parse_vendor_payload (ike_payload_header_t * ikep); +ikev2_sa_proposal_t *ikev2_parse_sa_payload (ike_payload_header_t * ikep); +ikev2_ts_t *ikev2_parse_ts_payload (ike_payload_header_t * ikep); +ikev2_delete_t *ikev2_parse_delete_payload (ike_payload_header_t * ikep); +ikev2_notify_t *ikev2_parse_notify_payload (ike_payload_header_t * ikep); + +#endif /* __included_ikev2_priv_h__ */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |