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/*
* Copyright (C) 2011-2019 PADL Software Pty Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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 COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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 NEGOEX_LOCL_H
#define NEGOEX_LOCL_H
#include <negoex_err.h>
struct gssspnego_ctx_desc;
#define MESSAGE_SIGNATURE 0x535458454F47454EULL
#define EXTENSION_LENGTH 12
#define EXTENSION_FLAG_CRITICAL 0x80000000
#define CHECKSUM_SCHEME_RFC3961 1
#define NEGOEX_KEYUSAGE_INITIATOR_CHECKSUM 23
#define NEGOEX_KEYUSAGE_ACCEPTOR_CHECKSUM 25
#define CHECKSUM_HEADER_LENGTH 20
#define GUID_LENGTH 16
typedef uint8_t auth_scheme[GUID_LENGTH];
typedef uint8_t conversation_id[GUID_LENGTH];
#define GUID_EQ(a, b) (memcmp(a, b, GUID_LENGTH) == 0)
#define NEGO_MESSAGE_HEADER_LENGTH 96
#define EXCHANGE_MESSAGE_HEADER_LENGTH 64
#define VERIFY_MESSAGE_HEADER_LENGTH 80
#define ALERT_MESSAGE_HEADER_LENGTH 72
#define ALERT_LENGTH 12
#define ALERT_PULSE_LENGTH 8
#define ALERT_TYPE_PULSE 1
#define ALERT_VERIFY_NO_KEY 1
enum message_type {
INITIATOR_NEGO = 0, /* NEGO_MESSAGE */
ACCEPTOR_NEGO, /* NEGO_MESSAGE */
INITIATOR_META_DATA, /* EXCHANGE_MESSAGE */
ACCEPTOR_META_DATA, /* EXCHANGE_MESSAGE */
CHALLENGE, /* EXCHANGE_MESSAGE */
AP_REQUEST, /* EXCHANGE_MESSAGE */
VERIFY, /* VERIFY_MESSAGE */
ALERT, /* ALERT */
};
struct nego_message {
uint8_t random[32];
const uint8_t *schemes;
uint16_t nschemes;
};
struct exchange_message {
auth_scheme scheme;
gss_buffer_desc token;
};
struct verify_message {
auth_scheme scheme;
uint32_t cksum_type;
const uint8_t *cksum;
size_t cksum_len;
size_t offset_in_token;
};
struct alert_message {
auth_scheme scheme;
int verify_no_key;
};
struct negoex_message {
uint32_t type;
union {
struct nego_message n;
struct exchange_message e;
struct verify_message v;
struct alert_message a;
} u;
};
struct negoex_auth_mech {
HEIM_TAILQ_ENTRY(negoex_auth_mech) links;
gss_OID oid;
auth_scheme scheme;
gss_ctx_id_t mech_context;
gss_buffer_desc metadata;
krb5_crypto crypto;
krb5_crypto verify_crypto;
int complete;
int sent_checksum;
int verified_checksum;
};
#define NEGOEX_LOG_LEVEL 10
#endif /* NEGOEX_LOCL_H */
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