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contrib/dhcpcd/src/auth.h
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| /* SPDX-License-Identifier: BSD-2-Clause */ | |||||
| /* | |||||
| * dhcpcd - DHCP client daemon | |||||
| * Copyright (c) 2006-2021 Roy Marples <roy@marples.name> | |||||
| * All rights reserved | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
| * SUCH DAMAGE. | |||||
| */ | |||||
| #ifndef AUTH_H | |||||
| #define AUTH_H | |||||
| #include "config.h" | |||||
| #ifdef HAVE_SYS_QUEUE_H | |||||
| #include <sys/queue.h> | |||||
| #endif | |||||
| #define DHCPCD_AUTH_SEND (1 << 0) | |||||
| #define DHCPCD_AUTH_REQUIRE (1 << 1) | |||||
| #define DHCPCD_AUTH_RDM_COUNTER (1 << 2) | |||||
| #define DHCPCD_AUTH_SENDREQUIRE (DHCPCD_AUTH_SEND | DHCPCD_AUTH_REQUIRE) | |||||
| #define AUTH_PROTO_TOKEN 0 | |||||
| #define AUTH_PROTO_DELAYED 1 | |||||
| #define AUTH_PROTO_DELAYEDREALM 2 | |||||
| #define AUTH_PROTO_RECONFKEY 3 | |||||
| #define AUTH_ALG_NONE 0 | |||||
| #define AUTH_ALG_HMAC_MD5 1 | |||||
| #define AUTH_RDM_MONOTONIC 0 | |||||
| struct token { | |||||
| TAILQ_ENTRY(token) next; | |||||
| uint32_t secretid; | |||||
| size_t realm_len; | |||||
| unsigned char *realm; | |||||
| size_t key_len; | |||||
| unsigned char *key; | |||||
| time_t expire; | |||||
| }; | |||||
| TAILQ_HEAD(token_head, token); | |||||
| struct auth { | |||||
| int options; | |||||
| #ifdef AUTH | |||||
| uint8_t protocol; | |||||
| uint8_t algorithm; | |||||
| uint8_t rdm; | |||||
| uint64_t last_replay; | |||||
| uint8_t last_replay_set; | |||||
| struct token_head tokens; | |||||
| uint32_t token_snd_secretid; | |||||
| uint32_t token_rcv_secretid; | |||||
| #endif | |||||
| }; | |||||
| struct authstate { | |||||
| uint64_t replay; | |||||
| struct token *token; | |||||
| struct token *reconf; | |||||
| }; | |||||
| void dhcp_auth_reset(struct authstate *); | |||||
| const struct token * dhcp_auth_validate(struct authstate *, | |||||
| const struct auth *, | |||||
| const void *, size_t, int, int, | |||||
| const void *, size_t); | |||||
| struct dhcpcd_ctx; | |||||
| ssize_t dhcp_auth_encode(struct dhcpcd_ctx *, struct auth *, | |||||
| const struct token *, | |||||
| void *, size_t, int, int, | |||||
| void *, size_t); | |||||
| int auth_get_rdm_monotonic(uint64_t *rdm); | |||||
| #endif | |||||