2021-05-30 18:27:13 +02:00
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/*
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* Copyright (C) 2021 Abhinay Ramesh
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __OSPF6_AUTH_TRAILER_H__
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#define __OSPF6_AUTH_TRAILER_H__
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#include "lib/keychain.h"
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#include "ospf6_message.h"
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#define OSPF6_AUTH_HDR_MIN_SIZE 16
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#define OSPF6_AUTH_HDR_FULL KEYCHAIN_MAX_HASH_SIZE + OSPF6_AUTH_HDR_MIN_SIZE
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2021-05-30 18:33:41 +02:00
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#define OSPF6_AUTHENTICATION_NULL 0
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#define OSPF6_AUTHENTICATION_CRYPTOGRAPHIC 1
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/* Auth debug options */
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extern unsigned char conf_debug_ospf6_auth[2];
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2021-05-30 18:27:13 +02:00
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#define OSPF6_AUTH_TX 0
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#define OSPF6_AUTH_RX 1
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#define OSPF6_DEBUG_AUTH_TX_ON() (conf_debug_ospf6_auth[OSPF6_AUTH_TX] = 1)
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#define OSPF6_DEBUG_AUTH_TX_OFF() (conf_debug_ospf6_auth[OSPF6_AUTH_TX] = 0)
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#define OSPF6_DEBUG_AUTH_RX_ON() (conf_debug_ospf6_auth[OSPF6_AUTH_RX] = 1)
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#define OSPF6_DEBUG_AUTH_RX_OFF() (conf_debug_ospf6_auth[OSPF6_AUTH_RX] = 0)
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#define IS_OSPF6_DEBUG_AUTH_TX (conf_debug_ospf6_auth[OSPF6_AUTH_TX])
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#define IS_OSPF6_DEBUG_AUTH_RX (conf_debug_ospf6_auth[OSPF6_AUTH_RX])
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#define OSPF6_AUTH_TRAILER_KEYCHAIN (1 << 0)
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#define OSPF6_AUTH_TRAILER_MANUAL_KEY (1 << 1)
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#define OSPF6_AUTH_TRAILER_KEYCHAIN_VALID (1 << 2)
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/* According to sesion 4.1 of RFC7166 defining the trailer struct */
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struct ospf6_auth_hdr {
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uint16_t type;
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uint16_t length;
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uint16_t reserved;
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uint16_t id;
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uint32_t seqnum_h;
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uint32_t seqnum_l;
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unsigned char data[KEYCHAIN_MAX_HASH_SIZE];
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};
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2021-05-30 18:33:41 +02:00
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enum ospf6_auth_err {
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OSPF6_AUTH_VALIDATE_SUCCESS = 0,
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OSPF6_AUTH_VALIDATE_FAILURE,
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OSPF6_AUTH_PROCESS_NORMAL,
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OSPF6_AUTH_FILE_EXIST,
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OSPF6_AUTH_FILE_DO_NOT_EXIST
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};
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2021-05-30 18:27:13 +02:00
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void ospf6_auth_hdr_dump_send(struct ospf6_header *ospfh, uint16_t length);
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void ospf6_auth_hdr_dump_recv(struct ospf6_header *ospfh, uint16_t length,
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unsigned int lls_len);
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unsigned char *ospf6_hash_message_xor(unsigned char *mes1, unsigned char *mes2,
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uint32_t len);
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unsigned int ospf6_auth_len_get(struct ospf6_interface *oi);
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int ospf6_auth_validate_pkt(struct ospf6_interface *oi, unsigned int *pkt_len,
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struct ospf6_header *oh, unsigned int *at_len,
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unsigned int *lls_block_len);
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int ospf6_auth_check_digest(struct ospf6_header *oh, struct ospf6_interface *oi,
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struct in6_addr *src, unsigned int lls_len);
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void ospf6_auth_update_digest(struct ospf6_interface *oi,
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struct ospf6_header *oh,
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struct ospf6_auth_hdr *ospf6_auth, char *auth_str,
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uint32_t pkt_len, enum keychain_hash_algo algo);
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void ospf6_auth_digest_send(struct in6_addr *src, struct ospf6_interface *oi,
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struct ospf6_header *oh, uint16_t auth_len,
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uint32_t pkt_len);
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void install_element_ospf6_debug_auth(void);
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int config_write_ospf6_debug_auth(struct vty *vty);
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void install_element_ospf6_clear_intf_auth(void);
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enum ospf6_auth_err ospf6_auth_nvm_file_exist(void);
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void ospf6_auth_seqno_nvm_update(struct ospf6 *ospf6);
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void ospf6_auth_seqno_nvm_delete(struct ospf6 *ospf6);
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void ospf6_auth_seqno_nvm_read(struct ospf6 *ospf6);
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2021-05-30 18:27:13 +02:00
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#endif /* __OSPF6_AUTH_TRAILER_H__ */
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