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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
#include "tacplus.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>
#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;
};
#ifndef TAC_PLUS_MAXSERVERS
#define TAC_PLUS_MAXSERVERS 4
#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
/* 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 char *tac_secret;
extern char *tac_login;
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;
extern int tac_connect(struct addrinfo **server, char **key, int servers);
extern int tac_connect_single(struct addrinfo *server, char *key);
extern char *tac_ntop(const struct sockaddr *sa, size_t ai_addrlen);
extern int tac_authen_send(int fd, const char *user, char *pass, char *tty,
char *r_addr);
extern int tac_authen_read(int fd);
extern int tac_cont_send(int fd, char *pass);
extern HDR *_tac_req_header(u_char type, int cont_session);
extern void _tac_crypt(u_char *buf, HDR *th, int length);
extern u_char *_tac_md5_pad(int len, HDR *hdr);
extern void tac_add_attrib(struct tac_attrib **attr, char *name, char *value);
extern void tac_free_attrib(struct tac_attrib **attr);
extern char *tac_acct_flag2str(int flag);
extern int tac_acct_send(int fd, int type, const char *user, char *tty, char *r_addr,
struct tac_attrib *attr);
extern int tac_acct_read(int fd, struct areply *arep);
extern void *xcalloc(size_t nmemb, size_t size);
extern void *xrealloc(void *ptr, size_t size);
extern char *_tac_check_header(HDR *th, int type);
extern int tac_author_send(int fd, const char *user, char *tty, char *r_addr,
struct tac_attrib *attr);
extern int tac_author_read(int fd, struct areply *arep);
extern void tac_add_attrib_pair(struct tac_attrib **attr, char *name, char sep,
char *value);
extern int tac_read_wait(int fd, int timeout, int size, int *time_left);
#ifdef __cplusplus
}
#endif
#endif
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