freebsd-dev/lib/libtacplus/taclib_private.h

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/*-
* Copyright (c) 1998, 2001, Juniper Networks, Inc.
* 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.
*
* $FreeBSD$
*/
#ifndef TACLIB_PRIVATE_H
#define TACLIB_PRIVATE_H
#include "taclib.h"
/* Defaults */
#define PATH_TACPLUS_CONF "/etc/tacplus.conf"
#define TACPLUS_PORT 49
#define TIMEOUT 3 /* In seconds */
/* Limits */
#define BODYSIZE 8150 /* Maximum message body size */
#define ERRSIZE 128 /* Maximum error message length */
#define MAXCONFLINE 1024 /* Maximum config file line length */
#define MAXSERVERS 10 /* Maximum number of servers to try */
#define MAXAVPAIRS 255 /* Maximum number of AV pairs */
/* Protocol constants. */
#define HDRSIZE 12 /* Size of message header */
/* Protocol version number */
#define TAC_VER_MAJOR 0xc /* Major version number */
/* Protocol packet types */
#define TAC_AUTHEN 0x01 /* Authentication */
#define TAC_AUTHOR 0x02 /* Authorization */
#define TAC_ACCT 0x03 /* Accouting */
/* Protocol header flags */
#define TAC_UNENCRYPTED 0x01
#define TAC_SINGLE_CONNECT 0x04
struct tac_server {
struct sockaddr_in addr; /* Address of server */
char *secret; /* Shared secret */
int timeout; /* Timeout in seconds */
int flags;
};
/*
* An optional string of bytes specified by the client for inclusion in
* a request. The data is always a dynamically allocated copy that
* belongs to the library. It is copied into the request packet just
* before sending the request.
*/
struct clnt_str {
void *data;
size_t len;
};
/*
* An optional string of bytes from a server response. The data resides
* in the response packet itself, and must not be freed.
*/
struct srvr_str {
const void *data;
size_t len;
};
struct tac_authen_start {
u_int8_t action;
u_int8_t priv_lvl;
u_int8_t authen_type;
u_int8_t service;
u_int8_t user_len;
u_int8_t port_len;
u_int8_t rem_addr_len;
u_int8_t data_len;
unsigned char rest[1];
};
struct tac_authen_reply {
u_int8_t status;
u_int8_t flags;
u_int16_t msg_len;
u_int16_t data_len;
unsigned char rest[1];
};
struct tac_authen_cont {
u_int16_t user_msg_len;
u_int16_t data_len;
u_int8_t flags;
unsigned char rest[1];
};
struct tac_author_request {
u_int8_t authen_meth;
u_int8_t priv_lvl;
u_int8_t authen_type;
u_int8_t service;
u_int8_t user_len;
u_int8_t port_len;
u_int8_t rem_addr_len;
u_int8_t av_cnt;
unsigned char rest[1];
};
struct tac_author_response {
u_int8_t status;
u_int8_t av_cnt;
u_int16_t msg_len;
u_int16_t data_len;
unsigned char rest[1];
};
struct tac_msg {
u_int8_t version;
u_int8_t type;
u_int8_t seq_no;
u_int8_t flags;
u_int8_t session_id[4];
u_int32_t length;
union {
struct tac_authen_start authen_start;
struct tac_authen_reply authen_reply;
struct tac_authen_cont authen_cont;
struct tac_author_request author_request;
struct tac_author_response author_response;
unsigned char body[BODYSIZE];
} u;
};
struct tac_handle {
int fd; /* Socket file descriptor */
struct tac_server servers[MAXSERVERS]; /* Servers to contact */
int num_servers; /* Number of valid server entries */
int cur_server; /* Server we are currently using */
int single_connect; /* Use a single connection */
int last_seq_no;
char errmsg[ERRSIZE]; /* Most recent error message */
struct clnt_str user;
struct clnt_str port;
struct clnt_str rem_addr;
struct clnt_str data;
struct clnt_str user_msg;
struct clnt_str avs[MAXAVPAIRS];
struct tac_msg request;
struct tac_msg response;
int srvr_pos; /* Scan position in response body */
struct srvr_str srvr_msg;
struct srvr_str srvr_data;
struct srvr_str srvr_avs[MAXAVPAIRS];
};
#endif