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-/*
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- * pppd.h - PPP daemon global declarations.
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- *
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- * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
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- *
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- * Redistribution and use in source and binary forms, with or without
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- * modification, are permitted provided that the following conditions
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- * are met:
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- *
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- * 1. Redistributions of source code must retain the above copyright
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- * notice, this list of conditions and the following disclaimer.
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- *
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- * 2. Redistributions in binary form must reproduce the above copyright
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- * notice, this list of conditions and the following disclaimer in
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- * the documentation and/or other materials provided with the
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- * distribution.
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- *
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- * 3. The name "Carnegie Mellon University" must not be used to
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- * endorse or promote products derived from this software without
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- * prior written permission. For permission or any legal
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- * details, please contact
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- * Office of Technology Transfer
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- * Carnegie Mellon University
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- * 5000 Forbes Avenue
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- * Pittsburgh, PA 15213-3890
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- * (412) 268-4387, fax: (412) 268-7395
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- * tech-transfer@andrew.cmu.edu
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- *
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- * 4. Redistributions of any form whatsoever must retain the following
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- * acknowledgment:
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- * "This product includes software developed by Computing Services
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- * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
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- *
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- * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
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- * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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- * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
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- * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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- * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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- *
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- * upstream pppd.h,v 1.82 2003/04/07 00:01:46 paulus Exp
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- * $Id: pppd.h,v 1.1 2004/04/28 11:36:07 quozl Exp $
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- */
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-
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-/*
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- * TODO:
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- */
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-
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-#ifndef __PPPD_H__
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-#define __PPPD_H__
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-
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-#include <stdio.h> /* for FILE */
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-#include <limits.h> /* for NGROUPS_MAX */
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-#include <sys/param.h> /* for MAXPATHLEN and BSD4_4, if defined */
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-#include <sys/types.h> /* for u_int32_t, if defined */
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-#include <sys/time.h> /* for struct timeval */
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-#include <net/ppp_defs.h>
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-#include "patchlevel.h"
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-
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-#if defined(__STDC__)
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-#include <stdarg.h>
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-#define __V(x) x
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-#else
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-#include <varargs.h>
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-#define __V(x) (va_alist) va_dcl
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-#define const
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-#define volatile
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-#endif
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-
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-#ifdef INET6
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-#include "eui64.h"
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-#endif
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-
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-/*
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- * Limits.
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- */
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-
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-#define NUM_PPP 1 /* One PPP interface supported (per process) */
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-#define MAXWORDLEN 1024 /* max length of word in file (incl null) */
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-#define MAXARGS 1 /* max # args to a command */
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-#define MAXNAMELEN 256 /* max length of hostname or name for auth */
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-#define MAXSECRETLEN 256 /* max length of password or secret */
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-
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-/*
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- * Option descriptor structure.
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- */
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-
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-typedef unsigned char bool;
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-
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-enum opt_type {
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- o_special_noarg = 0,
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- o_special = 1,
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- o_bool,
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- o_int,
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- o_uint32,
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- o_string,
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- o_wild
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-};
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-
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-typedef struct {
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- char *name; /* name of the option */
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- enum opt_type type;
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- void *addr;
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- char *description;
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- unsigned int flags;
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- void *addr2;
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- int upper_limit;
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- int lower_limit;
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- const char *source;
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- short int priority;
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- short int winner;
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-} option_t;
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-
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-/* Values for flags */
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-#define OPT_VALUE 0xff /* mask for presupplied value */
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-#define OPT_HEX 0x100 /* int option is in hex */
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-#define OPT_NOARG 0x200 /* option doesn't take argument */
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-#define OPT_OR 0x400 /* OR in argument to value */
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-#define OPT_INC 0x800 /* increment value */
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-#define OPT_A2OR 0x800 /* for o_bool, OR arg to *(u_char *)addr2 */
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-#define OPT_PRIV 0x1000 /* privileged option */
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-#define OPT_STATIC 0x2000 /* string option goes into static array */
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-#define OPT_LLIMIT 0x4000 /* check value against lower limit */
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-#define OPT_ULIMIT 0x8000 /* check value against upper limit */
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-#define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT)
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-#define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */
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-#define OPT_HIDE 0x10000 /* for o_string, print value as ?????? */
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-#define OPT_A2LIST 0x10000 /* for o_special, keep list of values */
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-#define OPT_A2CLRB 0x10000 /* o_bool, clr val bits in *(u_char *)addr2 */
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-#define OPT_NOINCR 0x20000 /* value mustn't be increased */
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-#define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */
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-#define OPT_PRIO 0x80000 /* process option priorities for this option */
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-#define OPT_PRIOSUB 0x100000 /* subsidiary member of priority group */
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-#define OPT_ALIAS 0x200000 /* option is alias for previous option */
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-#define OPT_A2COPY 0x400000 /* addr2 -> second location to rcv value */
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-#define OPT_ENABLE 0x800000 /* use *addr2 as enable for option */
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-#define OPT_A2CLR 0x1000000 /* clear *(bool *)addr2 */
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-#define OPT_PRIVFIX 0x2000000 /* user can't override if set by root */
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-#define OPT_INITONLY 0x4000000 /* option can only be set in init phase */
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-#define OPT_DEVEQUIV 0x8000000 /* equiv to device name */
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-#define OPT_DEVNAM (OPT_INITONLY | OPT_DEVEQUIV)
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-#define OPT_A2PRINTER 0x10000000 /* *addr2 is a fn for printing option */
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-#define OPT_A2STRVAL 0x20000000 /* *addr2 points to current string value */
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-#define OPT_NOPRINT 0x40000000 /* don't print this option at all */
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-
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-#define OPT_VAL(x) ((x) & OPT_VALUE)
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-
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-/* Values for priority */
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-#define OPRIO_DEFAULT 0 /* a default value */
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-#define OPRIO_CFGFILE 1 /* value from a configuration file */
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-#define OPRIO_CMDLINE 2 /* value from the command line */
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-#define OPRIO_SECFILE 3 /* value from options in a secrets file */
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-#define OPRIO_ROOT 100 /* added to priority if OPT_PRIVFIX && root */
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-
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-#ifndef GIDSET_TYPE
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-#define GIDSET_TYPE gid_t
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-#endif
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-
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-/* Structure representing a list of permitted IP addresses. */
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-struct permitted_ip {
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- int permit; /* 1 = permit, 0 = forbid */
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- u_int32_t base; /* match if (addr & mask) == base */
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- u_int32_t mask; /* base and mask are in network byte order */
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-};
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-
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-/*
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- * Unfortunately, the linux kernel driver uses a different structure
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- * for statistics from the rest of the ports.
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- * This structure serves as a common representation for the bits
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- * pppd needs.
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- */
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-struct pppd_stats {
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- unsigned int bytes_in;
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- unsigned int bytes_out;
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- unsigned int pkts_in;
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- unsigned int pkts_out;
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-};
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-
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-/* Used for storing a sequence of words. Usually malloced. */
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-struct wordlist {
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- struct wordlist *next;
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- char *word;
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-};
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-
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-/* An endpoint discriminator, used with multilink. */
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-#define MAX_ENDP_LEN 20 /* maximum length of discriminator value */
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-struct epdisc {
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- unsigned char class;
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- unsigned char length;
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- unsigned char value[MAX_ENDP_LEN];
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-};
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-
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-/* values for epdisc.class */
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-#define EPD_NULL 0 /* null discriminator, no data */
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-#define EPD_LOCAL 1
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-#define EPD_IP 2
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-#define EPD_MAC 3
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-#define EPD_MAGIC 4
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-#define EPD_PHONENUM 5
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-
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-typedef void (*notify_func) __P((void *, int));
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-
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-struct notifier {
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- struct notifier *next;
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- notify_func func;
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- void *arg;
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-};
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-
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-/*
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- * Global variables.
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- */
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-
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-extern int hungup; /* Physical layer has disconnected */
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-extern int ifunit; /* Interface unit number */
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-extern char ifname[]; /* Interface name */
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-extern char hostname[]; /* Our hostname */
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-extern u_char outpacket_buf[]; /* Buffer for outgoing packets */
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-extern int phase; /* Current state of link - see values below */
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-extern int baud_rate; /* Current link speed in bits/sec */
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-extern char *progname; /* Name of this program */
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-extern int redirect_stderr;/* Connector's stderr should go to file */
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-extern char peer_authname[];/* Authenticated name of peer */
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-extern int auth_done[NUM_PPP]; /* Methods actually used for auth */
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-extern int privileged; /* We were run by real-uid root */
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-extern int need_holdoff; /* Need holdoff period after link terminates */
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-extern char **script_env; /* Environment variables for scripts */
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-extern int detached; /* Have detached from controlling tty */
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-extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */
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-extern int ngroups; /* How many groups valid in groups */
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-extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */
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-extern int link_stats_valid; /* set if link_stats is valid */
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-extern unsigned link_connect_time; /* time the link was up for */
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-extern int using_pty; /* using pty as device (notty or pty opt.) */
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-extern int log_to_fd; /* logging to this fd as well as syslog */
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-extern bool log_default; /* log_to_fd is default (stdout) */
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-extern char *no_ppp_msg; /* message to print if ppp not in kernel */
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-extern volatile int status; /* exit status for pppd */
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-extern bool devnam_fixed; /* can no longer change devnam */
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-extern int unsuccess; /* # unsuccessful connection attempts */
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-extern int do_callback; /* set if we want to do callback next */
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-extern int doing_callback; /* set if this is a callback */
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-extern int error_count; /* # of times error() has been called */
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-extern char ppp_devnam[MAXPATHLEN];
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-extern char remote_number[MAXNAMELEN]; /* Remote telephone number, if avail. */
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-extern int ppp_session_number; /* Session number (eg PPPoE session) */
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-
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-extern int listen_time; /* time to listen first (ms) */
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-extern struct notifier *pidchange; /* for notifications of pid changing */
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-extern struct notifier *phasechange; /* for notifications of phase changes */
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-extern struct notifier *exitnotify; /* for notification that we're exiting */
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-extern struct notifier *sigreceived; /* notification of received signal */
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-extern struct notifier *ip_up_notifier; /* IPCP has come up */
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-extern struct notifier *ip_down_notifier; /* IPCP has gone down */
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-extern struct notifier *auth_up_notifier; /* peer has authenticated */
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-extern struct notifier *link_down_notifier; /* link has gone down */
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-extern struct notifier *fork_notifier; /* we are a new child process */
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-
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-/* Values for do_callback and doing_callback */
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-#define CALLBACK_DIALIN 1 /* we are expecting the call back */
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-#define CALLBACK_DIALOUT 2 /* we are dialling out to call back */
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-
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-/*
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- * Variables set by command-line options.
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- */
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-
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-extern int debug; /* Debug flag */
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-extern int kdebugflag; /* Tell kernel to print debug messages */
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-extern int default_device; /* Using /dev/tty or equivalent */
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-extern char devnam[MAXPATHLEN]; /* Device name */
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-extern int crtscts; /* Use hardware flow control */
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-extern bool modem; /* Use modem control lines */
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-extern int inspeed; /* Input/Output speed requested */
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-extern u_int32_t netmask; /* IP netmask to set on interface */
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-extern bool lockflag; /* Create lock file to lock the serial dev */
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-extern bool nodetach; /* Don't detach from controlling tty */
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-extern bool updetach; /* Detach from controlling tty when link up */
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-extern char *initializer; /* Script to initialize physical link */
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-extern char *connect_script; /* Script to establish physical link */
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-extern char *disconnect_script; /* Script to disestablish physical link */
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-extern char *welcomer; /* Script to welcome client after connection */
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-extern char *ptycommand; /* Command to run on other side of pty */
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-extern int maxconnect; /* Maximum connect time (seconds) */
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-extern char user[MAXNAMELEN];/* Our name for authenticating ourselves */
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-extern char passwd[MAXSECRETLEN]; /* Password for PAP or CHAP */
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-extern bool auth_required; /* Peer is required to authenticate */
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-extern bool persist; /* Reopen link after it goes down */
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-extern bool uselogin; /* Use /etc/passwd for checking PAP */
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-extern char our_name[MAXNAMELEN];/* Our name for authentication purposes */
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-extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
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-extern bool explicit_remote;/* remote_name specified with remotename opt */
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-extern bool demand; /* Do dial-on-demand */
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-extern char *ipparam; /* Extra parameter for ip up/down scripts */
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-extern bool cryptpap; /* Others' PAP passwords are encrypted */
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-extern int idle_time_limit;/* Shut down link if idle for this long */
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-extern int holdoff; /* Dead time before restarting */
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-extern bool holdoff_specified; /* true if user gave a holdoff value */
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-extern bool notty; /* Stdin/out is not a tty */
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-extern char *pty_socket; /* Socket to connect to pty */
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-extern char *record_file; /* File to record chars sent/received */
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-extern bool sync_serial; /* Device is synchronous serial device */
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-extern int maxfail; /* Max # of unsuccessful connection attempts */
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-extern char linkname[MAXPATHLEN]; /* logical name for link */
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-extern bool tune_kernel; /* May alter kernel settings as necessary */
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-extern int connect_delay; /* Time to delay after connect script */
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-extern int max_data_rate; /* max bytes/sec through charshunt */
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-extern int req_unit; /* interface unit number to use */
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-extern bool multilink; /* enable multilink operation */
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-extern bool noendpoint; /* don't send or accept endpt. discrim. */
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-extern char *bundle_name; /* bundle name for multilink */
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-extern bool dump_options; /* print out option values */
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-extern bool dryrun; /* check everything, print options, exit */
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-
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-#ifdef MAXOCTETS
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-extern unsigned int maxoctets; /* Maximum octetes per session (in bytes) */
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-extern int maxoctets_dir; /* Direction :
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- 0 - in+out (default)
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- 1 - in
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- 2 - out
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- 3 - max(in,out) */
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-extern int maxoctets_timeout; /* Timeout for check of octets limit */
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-#define PPP_OCTETS_DIRECTION_SUM 0
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-#define PPP_OCTETS_DIRECTION_IN 1
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-#define PPP_OCTETS_DIRECTION_OUT 2
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-#define PPP_OCTETS_DIRECTION_MAXOVERAL 3
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-/* same as previos, but little different on RADIUS side */
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-#define PPP_OCTETS_DIRECTION_MAXSESSION 4
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-#endif
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-
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-#ifdef PPP_FILTER
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-extern struct bpf_program pass_filter; /* Filter for pkts to pass */
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-extern struct bpf_program active_filter; /* Filter for link-active pkts */
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-#endif
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-
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-#ifdef MSLANMAN
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-extern bool ms_lanman; /* Use LanMan password instead of NT */
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- /* Has meaning only with MS-CHAP challenges */
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-#endif
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-
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-/* Values for auth_pending, auth_done */
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-#define PAP_WITHPEER 0x1
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-#define PAP_PEER 0x2
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-#define CHAP_WITHPEER 0x4
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-#define CHAP_PEER 0x8
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-#define EAP_WITHPEER 0x10
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-#define EAP_PEER 0x20
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-
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-/* Values for auth_done only */
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-#define CHAP_MD5_WITHPEER 0x40
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-#define CHAP_MD5_PEER 0x80
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-#ifdef CHAPMS
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-#define CHAP_MS_SHIFT 8 /* LSB position for MS auths */
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-#define CHAP_MS_WITHPEER 0x100
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-#define CHAP_MS_PEER 0x200
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-#define CHAP_MS2_WITHPEER 0x400
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-#define CHAP_MS2_PEER 0x800
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-#endif
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-
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-extern char *current_option; /* the name of the option being parsed */
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-extern int privileged_option; /* set iff the current option came from root */
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-extern char *option_source; /* string saying where the option came from */
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-extern int option_priority; /* priority of current options */
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-
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-/*
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- * Values for phase.
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- */
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-#define PHASE_DEAD 0
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-#define PHASE_INITIALIZE 1
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-#define PHASE_SERIALCONN 2
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-#define PHASE_DORMANT 3
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-#define PHASE_ESTABLISH 4
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-#define PHASE_AUTHENTICATE 5
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-#define PHASE_CALLBACK 6
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-#define PHASE_NETWORK 7
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-#define PHASE_RUNNING 8
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-#define PHASE_TERMINATE 9
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-#define PHASE_DISCONNECT 10
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-#define PHASE_HOLDOFF 11
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-
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-/*
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- * The following struct gives the addresses of procedures to call
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- * for a particular protocol.
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- */
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-struct protent {
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- u_short protocol; /* PPP protocol number */
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- /* Initialization procedure */
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- void (*init) __P((int unit));
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- /* Process a received packet */
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- void (*input) __P((int unit, u_char *pkt, int len));
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- /* Process a received protocol-reject */
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- void (*protrej) __P((int unit));
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- /* Lower layer has come up */
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- void (*lowerup) __P((int unit));
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- /* Lower layer has gone down */
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- void (*lowerdown) __P((int unit));
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- /* Open the protocol */
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- void (*open) __P((int unit));
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- /* Close the protocol */
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- void (*close) __P((int unit, char *reason));
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- /* Print a packet in readable form */
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- int (*printpkt) __P((u_char *pkt, int len,
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- void (*printer) __P((void *, char *, ...)),
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- void *arg));
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- /* Process a received data packet */
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- void (*datainput) __P((int unit, u_char *pkt, int len));
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- bool enabled_flag; /* 0 iff protocol is disabled */
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- char *name; /* Text name of protocol */
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- char *data_name; /* Text name of corresponding data protocol */
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- option_t *options; /* List of command-line options */
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- /* Check requested options, assign defaults */
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- void (*check_options) __P((void));
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- /* Configure interface for demand-dial */
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- int (*demand_conf) __P((int unit));
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- /* Say whether to bring up link for this pkt */
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- int (*active_pkt) __P((u_char *pkt, int len));
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-};
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-
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-/* Table of pointers to supported protocols */
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-extern struct protent *protocols[];
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-
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-/*
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- * This struct contains pointers to a set of procedures for
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- * doing operations on a "channel". A channel provides a way
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- * to send and receive PPP packets - the canonical example is
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- * a serial port device in PPP line discipline (or equivalently
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- * with PPP STREAMS modules pushed onto it).
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- */
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-struct channel {
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- /* set of options for this channel */
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- option_t *options;
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- /* find and process a per-channel options file */
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- void (*process_extra_options) __P((void));
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- /* check all the options that have been given */
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- void (*check_options) __P((void));
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- /* get the channel ready to do PPP, return a file descriptor */
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- int (*connect) __P((void));
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- /* we're finished with the channel */
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- void (*disconnect) __P((void));
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- /* put the channel into PPP `mode' */
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- int (*establish_ppp) __P((int));
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- /* take the channel out of PPP `mode', restore loopback if demand */
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- void (*disestablish_ppp) __P((int));
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- /* set the transmit-side PPP parameters of the channel */
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- void (*send_config) __P((int, u_int3
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