pppd.h

eCos操作系统源码

//==========================================================================
//
//      include/pppd.h
//
//==========================================================================
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 2003 eCosCentric Ltd.
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/*
 * pppd.h - PPP daemon global declarations.
 *
 * 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.
 *
 * $FreeBSD: src/usr.sbin/pppd/pppd.h,v 1.13 1999/08/28 01:19:08 peter Exp $
 */

/*
 * TODO:
 */

#ifndef __PPPD_H__
#define __PPPD_H__

#include <cyg/io/io.h>
#include <cyg/io/serialio.h>

#include <cyg/ppp/names.h>

#include <stdio.h>		/* for FILE */
#include <sys/param.h>		/* for MAXPATHLEN and BSD4_4, if defined */
#include <sys/types.h>		/* for u_int32_t, if defined */
#include <sys/time.h>		/* for struct timeval */
#include <cyg/ppp/net/ppp_defs.h>

#if __STDC__
#include <stdarg.h>
#define __V(x)	x
#else
#include <varargs.h>
#define __V(x)	(va_alist) va_dcl
#define const
#endif

/*
 * Limits.
 */

#define NUM_PPP		1	/* One PPP interface supported (per process) */
#define MAXWORDLEN	1024	/* max length of word in file (incl null) */
#define MAXARGS		1	/* max # args to a command */
#define MAXNAMELEN	256	/* max length of hostname or name for auth */
#define MAXSECRETLEN	256	/* max length of password or secret */

/*
 * Global variables.
 */

extern int	hungup;		/* Physical layer has disconnected */
extern int	ifunit;		/* Interface unit number */
extern char	ifname[];	/* Interface name */
extern int	ttyfd;		/* Serial device file descriptor */
extern char	cyg_ppp_hostname[];	/* Our hostname */
extern u_char	outpacket_buf[]; /* Buffer for outgoing packets */
extern int	phase;		/* Current state of link - see values below */
extern int	baud_rate;	/* Current link speed in bits/sec */
extern char	*progname;	/* Name of this program */
extern int	redirect_stderr;/* Connector's stderr should go to file */
extern char	peer_authname[];/* Authenticated name of peer */
extern int	privileged;	/* We were run by real-uid root */
extern int	need_holdoff;	/* Need holdoff period after link terminates */
extern char	**script_env;	/* Environment variables for scripts */
extern int	detached;	/* Have detached from controlling tty */

/*
 * Variables set by command-line options.
 */

extern int	debug;		/* Debug flag */
extern int	kdebugflag;	/* Tell kernel to print debug messages */
extern int	default_device;	/* Using /dev/tty or equivalent */
extern char	devnam[];	/* Device name */
extern int      flowctl;        /* Flow control */
extern int	modem;		/* Use modem control lines */
extern cyg_serial_baud_rate_t	inspeed;	/* Input/Output speed requested */
extern u_int32_t netmask;	/* IP netmask to set on interface */
extern int	lockflag;	/* Create lock file to lock the serial dev */
extern int	nodetach;	/* Don't detach from controlling tty */
extern char	*connector;	/* Script to establish physical link */
extern char	*disconnector;	/* Script to disestablish physical link */
extern char	*welcomer;	/* Script to welcome client after connection */
extern int	max_con_attempts;/* Maximum number of times to try dialing */
extern int	maxconnect;	/* Maximum connect time (seconds) */
extern char	user[];		/* Our name for authenticating ourselves */
extern char	passwd[];	/* Password for PAP */
extern int	auth_required;	/* Peer is required to authenticate */
extern int	proxyarp;	/* Set up proxy ARP entry for peer */
extern int	persist;	/* Reopen link after it goes down */
extern int	uselogin;	/* Use /etc/passwd for checking PAP */
extern int	lcp_echo_interval; /* Interval between LCP echo-requests */
extern int	lcp_echo_fails;	/* Tolerance to unanswered echo-requests */
extern char	our_name[];	/* Our name for authentication purposes */
extern char	remote_name[];	/* Peer's name for authentication */
extern int	explicit_remote;/* remote_name specified with remotename opt */
extern int	usehostname;	/* Use hostname for our_name */
extern int	disable_defaultip; /* Don't use hostname for default IP adrs */
//extern int	demand;		/* Do dial-on-demand */
#define demand 0
extern char	*ipparam;	/* Extra parameter for ip up/down scripts */
extern int	cryptpap;	/* Others' PAP passwords are encrypted */
extern int	idle_time_limit;/* Shut down link if idle for this long */
extern int	holdoff;	/* Dead time before restarting */
extern int	refuse_pap;	/* Don't wanna auth. ourselves with PAP */
extern int	refuse_chap;	/* Don't wanna auth. ourselves with CHAP */
#ifdef PPP_FILTER
extern struct	bpf_program pass_filter;   /* Filter for pkts to pass */
extern struct	bpf_program active_filter; /* Filter for link-active pkts */
#endif


#ifdef MSLANMAN
extern int	ms_lanman;	/* Nonzero if use LanMan password instead of NT */
				/* Has meaning only with MS-CHAP challenges */
#endif

/*
 * Values for phase.
 */
#define PHASE_DEAD		0
#define PHASE_INITIALIZE	1
#define PHASE_DORMANT		2
#define PHASE_ESTABLISH		3
#define PHASE_AUTHENTICATE	4
#define PHASE_CALLBACK		5
#define PHASE_NETWORK		6
#define PHASE_TERMINATE		7
#define PHASE_HOLDOFF		8

/*
 * The following struct gives the addresses of procedures to call
 * for a particular protocol.
 */
struct protent {
    u_short protocol;		/* PPP protocol number */
    /* Initialization procedure */
    void (*init) __P((int unit));
    /* Process a received packet */
    void (*input) __P((int unit, u_char *pkt, int len));
    /* Process a received protocol-reject */
    void (*protrej) __P((int unit));
    /* Lower layer has come up */
    void (*lowerup) __P((int unit));
    /* Lower layer has gone down */
    void (*lowerdown) __P((int unit));
    /* Open the protocol */
    void (*open) __P((int unit));
    /* Close the protocol */
    void (*close) __P((int unit, char *reason));
    /* Print a packet in readable form */
    int  (*printpkt) __P((u_char *pkt, int len,
			  void (*printer) __P((void *, char *, ...)),
			  void *arg));
    /* Process a received data packet */
    void (*datainput) __P((int unit, u_char *pkt, int len));
    int  enabled_flag;		/* 0 iff protocol is disabled */
    char *name;			/* Text name of protocol */
    /* Check requested options, assign defaults */
    void (*check_options) __P((void));
    /* Configure interface for demand-dial */
    int  (*demand_conf) __P((int unit));
    /* Say whether to bring up link for this pkt */
    int  (*active_pkt) __P((u_char *pkt, int len));
};

/* Table of pointers to supported protocols */
extern struct protent *protocols[];

/*
 * Prototypes.
 */

/* Procedures exported from main.c. */
void detach __P((void));	/* Detach from controlling tty */
void die __P((int));		/* Cleanup and exit */
void quit __P((void));		/* like die(1) */
void novm __P((char *));	/* Say we ran out of memory, and die */
void cyg_ppp_timeout __P((void (*func)(void *), void *arg, int t));
				/* Call func(arg) after t seconds */
void cyg_ppp_untimeout __P((void (*func)(void *), void *arg));
				/* Cancel call to func(arg) */
int run_program __P((char *prog, char **args, int must_exist));
				/* Run program prog with args in child */
void demuxprotrej __P((int, int));
				/* Demultiplex a Protocol-Reject */
void format_packet __P((u_char *, int, void (*) (void *, char *, ...),
		void *));	/* Format a packet in human-readable form */
void log_packet __P((u_char *, int, char *, int));
				/* Format a packet and log it with syslog */
void print_string __P((char *, int,  void (*) (void *, char *, ...),
		void *));	/* Format a string for output */
int fmtmsg __P((char *, int, char *, ...));		/* sprintf++ */
int vfmtmsg __P((char *, int, char *, va_list));	/* vsprintf++ */
void script_setenv __P((char *, char *));	/* set script env var */
void script_unsetenv __P((char *));		/* unset script env var */

/* Procedures exported from auth.c */
void link_required __P((int));	  /* we are starting to use the link */
void link_terminated __P((int));  /* we are finished with the link */
void link_down __P((int));	  /* the LCP layer has left the Opened state */
void link_established __P((int)); /* the link is up; authenticate now */
void np_up __P((int, int));	  /* a network protocol has come up */
void np_down __P((int, int));	  /* a network protocol has gone down */
void np_finished __P((int, int)); /* a network protocol no longer needs link */
void auth_peer_fail __P((int, int));
				/* peer failed to authenticate itself */
void auth_peer_success __P((int, int, char *, int));
				/* peer successfully authenticated itself */
void auth_withpeer_fail __P((int, int));
				/* we failed to authenticate ourselves */
void auth_withpeer_success __P((int, int));
				/* we successfully authenticated ourselves */
void auth_check_options __P((void));