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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) 2006-2019 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); | |||||
ssize_t dhcp_auth_encode(struct auth *, const struct token *, | |||||
void *, size_t, int, int, | |||||
void *, size_t); | |||||
#endif |