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/* libtac.h
*
* Copyright (C) 2010, Pawel Krawczyk <pawel.krawczyk@hush.com> and
* Jeroen Nijhof <jeroen@jeroennijhof.nl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program - see the file COPYING.
*
* See `CHANGES' file for revision history.
*/
#ifndef _LIB_TAC_H
#define _LIB_TAC_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <syslog.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <unistd.h>
#include <sys/types.h>
#ifdef __linux__
#include <sys/cdefs.h>
#else
#include "cdefs.h"
#endif
#include "tacplus.h"
#if defined(DEBUGTAC) && !defined(TACDEBUG)
#define TACDEBUG(x) syslog x;
#else
//#define TACDEBUG(x) syslog x;
#define TACDEBUG(x)
#endif
#define TACSYSLOG(x) syslog x;
#if defined(TACDEBUG_AT_RUNTIME)
#undef TACDEBUG
#undef TACSYSLOG
#define TACDEBUG(x) if (tac_debug_enable) (void)logmsg x;
#define TACSYSLOG(x) (void)logmsg x;
extern int logmsg __P((int, const char*, ...));
#endif
/* u_int32_t support for sun */
#ifdef sun
typedef unsigned int u_int32_t;
#endif
struct tac_attrib {
char *attr;
u_char attr_len;
struct tac_attrib *next;
};
struct areply {
struct tac_attrib *attr;
char *msg;
int status : 8;
int flags : 8;
int seq_no : 8;
};
#ifndef TAC_PLUS_MAXSERVERS
#define TAC_PLUS_MAXSERVERS 8
#endif
#ifndef TAC_PLUS_MAX_PACKET_SIZE
#define TAC_PLUS_MAX_PACKET_SIZE 128000 /* bytes */
#endif
#ifndef TAC_PLUS_PORT
#define TAC_PLUS_PORT 49
#endif
#define TAC_PLUS_READ_TIMEOUT 180 /* seconds */
#define TAC_PLUS_WRITE_TIMEOUT 180 /* seconds */
/* Internal status codes
* all negative, tacplus status codes are >= 0
*/
#define LIBTAC_STATUS_ASSEMBLY_ERR -1
#define LIBTAC_STATUS_PROTOCOL_ERR -2
#define LIBTAC_STATUS_READ_TIMEOUT -3
#define LIBTAC_STATUS_WRITE_TIMEOUT -4
#define LIBTAC_STATUS_WRITE_ERR -5
#define LIBTAC_STATUS_SHORT_HDR -6
#define LIBTAC_STATUS_SHORT_BODY -7
#define LIBTAC_STATUS_CONN_TIMEOUT -8
#define LIBTAC_STATUS_CONN_ERR -9
#define LIBTAC_STATUS_CONN_CLOSED -10
/* Runtime flags */
/* version.c */
extern int tac_ver_major;
extern int tac_ver_minor;
extern int tac_ver_patch;
/* header.c */
extern int session_id;
extern int tac_encryption;
extern const char *tac_secret;
extern char tac_login[64];
extern int tac_priv_lvl;
extern int tac_authen_method;
extern int tac_authen_service;
extern int tac_debug_enable;
extern int tac_readtimeout_enable;
/* connect.c */
extern int tac_timeout;
int tac_connect(struct addrinfo **, char **, int, char *iface);
int tac_connect_single(struct addrinfo *, const char *, struct addrinfo *,
char *iface);
char *tac_ntop(const struct sockaddr *);
int tac_authen_send(int, const char *, char *, char *,
char *, u_char);
int tac_authen_read(int, struct areply *);
int tac_cont_send_seq(int, char *, int);
#define tac_cont_send(fd, pass) tac_cont_send_seq((fd), (pass), 3)
HDR *_tac_req_header(u_char, int);
void _tac_crypt(u_char *, HDR *, int);
u_char *_tac_md5_pad(int, HDR *);
void tac_add_attrib(struct tac_attrib **, char *, char *);
void tac_free_attrib(struct tac_attrib **);
char *tac_acct_flag2str(int);
int tac_acct_send(int, int, const char *, char *, char *,
struct tac_attrib *);
int tac_acct_read(int, struct areply *);
void *tac_xcalloc(size_t, size_t);
void *tac_xrealloc(void *, size_t);
char *tac_xstrcpy(char *, const char *, size_t);
char *tac_xstrdup(const char *);
char *_tac_check_header(HDR *, int);
int tac_author_send(int, const char *, char *, char *,
struct tac_attrib *);
int tac_author_read(int, struct areply *);
void tac_add_attrib_pair(struct tac_attrib **, char *, char,
char *);
int tac_read_wait(int, int, int, int *);
/* magic.c */
u_int32_t tac_magic(void);
#ifdef __cplusplus
}
#endif
#endif
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