/* * 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 #include #include #include #include #include #include #include #include #include #include #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; u32 salt_ei; u32 salt_er; /* installed data */ u32 local_sa_id; u32 remote_sa_id; /* 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; u8 is_profile_index_set; u32 profile_index; 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: */