/****************************************************************************** pap.h -  PPP Password Authentication Protocol header file.** Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.* portions Copyright (c) 1997 Global Election Systems Inc.** The authors hereby grant permission to use, copy, modify, distribute,* and license this software and its documentation for any purpose, provided* that existing copyright notices are retained in all copies and that this* notice and the following disclaimer are included verbatim in any * distributions. No written agreement, license, or royalty fee is required* for any of the authorized uses.** THIS SOFTWARE IS PROVIDED BY THE 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 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.******************************************************************************** REVISION HISTORY** 03-01-01 Marc Boucher <marc@mbsi.ca>*   Ported to lwIP.* 97-12-04 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.*	Original derived from BSD codes.*****************************************************************************//* * upap.h - User/Password Authentication Protocol definitions. * * Copyright (c) 1989 Carnegie Mellon University. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by Carnegie Mellon University.  The name of the * University may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */#ifndef PAP_H#define PAP_H/**************************** PUBLIC DEFINITIONS ****************************//* * Packet header = Code, id, length. */#define UPAP_HEADERLEN	(sizeof (u_char) + sizeof (u_char) + sizeof (u_short))/* * UPAP codes. */#define UPAP_AUTHREQ	1	/* Authenticate-Request */#define UPAP_AUTHACK	2	/* Authenticate-Ack */#define UPAP_AUTHNAK	3	/* Authenticate-Nak *//* * Client states. */#define UPAPCS_INITIAL	0	/* Connection down */#define UPAPCS_CLOSED	1	/* Connection up, haven't requested auth */#define UPAPCS_PENDING	2	/* Connection down, have requested auth */#define UPAPCS_AUTHREQ	3	/* We've sent an Authenticate-Request */#define UPAPCS_OPEN		4	/* We've received an Ack */#define UPAPCS_BADAUTH	5	/* We've received a Nak *//* * Server states. */#define UPAPSS_INITIAL	0	/* Connection down */#define UPAPSS_CLOSED	1	/* Connection up, haven't requested auth */#define UPAPSS_PENDING	2	/* Connection down, have requested auth */#define UPAPSS_LISTEN	3	/* Listening for an Authenticate */#define UPAPSS_OPEN		4	/* We've sent an Ack */#define UPAPSS_BADAUTH	5	/* We've sent a Nak *//*************************** PUBLIC DATA TYPES ***************************//* * Each interface is described by upap structure. */typedef struct upap_state {    int us_unit;			/* Interface unit number */    const char *us_user;	/* User */    int us_userlen;			/* User length */    const char *us_passwd;	/* Password */    int us_passwdlen;		/* Password length */    int us_clientstate;		/* Client state */    int us_serverstate;		/* Server state */    u_char us_id;			/* Current id */    int us_timeouttime;		/* Timeout (seconds) for auth-req retrans. */    int us_transmits;		/* Number of auth-reqs sent */    int us_maxtransmits;	/* Maximum number of auth-reqs to send */    int us_reqtimeout;		/* Time to wait for auth-req from peer */} upap_state;/************************** PUBLIC FUNCTIONS **************************/extern upap_state upap[];void upap_setloginpasswd(int unit, const char *luser, const char *lpassword);void upap_authwithpeer (int, char *, char *);void upap_authpeer (int);extern struct protent pap_protent;#endif /* PAP_H */