1455 lines
30 KiB
C
1455 lines
30 KiB
C
/*
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* options.c - handles option processing for PPP.
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*
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* Copyright (c) 1989 Carnegie Mellon University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by Carnegie Mellon University. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static char rcsid[] = "$Id: options.c,v 1.10 1994/05/27 00:43:34 paulus Exp $";
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <limits.h>
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#define devname STDLIB_devname
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#include <stdlib.h>
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#undef devname
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#include <termios.h>
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#include <syslog.h>
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#include <string.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <netinet/in.h>
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#include "ppp.h"
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#include "pppd.h"
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#include "pathnames.h"
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#include "patchlevel.h"
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#include "fsm.h"
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#include "lcp.h"
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#include "ipcp.h"
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#include "upap.h"
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#include "chap.h"
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#define FALSE 0
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#define TRUE 1
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#ifdef ultrix
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char *strdup __ARGS((char *));
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#endif
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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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* Prototypes
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*/
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static int setdebug __ARGS((void));
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static int setkdebug __ARGS((char **));
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static int setpassive __ARGS((void));
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static int setsilent __ARGS((void));
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static int noopt __ARGS((void));
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static int setnovj __ARGS((void));
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static int setnovjccomp __ARGS((void));
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static int setvjslots __ARGS((char **));
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static int reqpap __ARGS((void));
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static int nopap __ARGS((void));
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static int setupapfile __ARGS((char **));
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static int nochap __ARGS((void));
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static int reqchap __ARGS((void));
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static int setspeed __ARGS((char *));
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static int noaccomp __ARGS((void));
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static int noasyncmap __ARGS((void));
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static int noipaddr __ARGS((void));
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static int nomagicnumber __ARGS((void));
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static int setasyncmap __ARGS((char **));
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static int setescape __ARGS((char **));
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static int setmru __ARGS((char **));
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static int setmtu __ARGS((char **));
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static int nomru __ARGS((void));
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static int nopcomp __ARGS((void));
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static int setconnector __ARGS((char **));
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static int setdisconnector __ARGS((char **));
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static int setdomain __ARGS((char **));
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static int setnetmask __ARGS((char **));
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static int setcrtscts __ARGS((void));
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static int setxonxoff __ARGS((void));
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static int setnodetach __ARGS((void));
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static int setmodem __ARGS((void));
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static int setlocal __ARGS((void));
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static int setlock __ARGS((void));
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static int setname __ARGS((char **));
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static int setuser __ARGS((char **));
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static int setremote __ARGS((char **));
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static int setauth __ARGS((void));
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static int readfile __ARGS((char **));
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static int setdefaultroute __ARGS((void));
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static int setproxyarp __ARGS((void));
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static int setpersist __ARGS((void));
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static int setdologin __ARGS((void));
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static int setusehostname __ARGS((void));
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static int setnoipdflt __ARGS((void));
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static int setlcptimeout __ARGS((char **));
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static int setlcpterm __ARGS((char **));
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static int setlcpconf __ARGS((char **));
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static int setlcpfails __ARGS((char **));
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static int setipcptimeout __ARGS((char **));
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static int setipcpterm __ARGS((char **));
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static int setipcpconf __ARGS((char **));
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static int setipcpfails __ARGS((char **));
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static int setpaptimeout __ARGS((char **));
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static int setpapreqs __ARGS((char **));
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static int setchaptimeout __ARGS((char **));
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static int setchapchal __ARGS((char **));
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static int setchapintv __ARGS((char **));
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static int setipcpaccl __ARGS((void));
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static int setipcpaccr __ARGS((void));
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static int setlcpechointv __ARGS((char **));
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static int setlcpechofails __ARGS((char **));
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static int number_option __ARGS((char *, long *, int));
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static int readable __ARGS((int fd));
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/*
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* Option variables
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*/
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extern char *progname;
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extern int debug;
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extern int kdebugflag;
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extern int modem;
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extern int lockflag;
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extern int crtscts;
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extern int nodetach;
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extern char *connector;
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extern char *disconnector;
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extern int inspeed;
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extern char devname[];
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extern int default_device;
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extern u_long netmask;
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extern int detach;
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extern char user[];
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extern char passwd[];
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extern int auth_required;
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extern int proxyarp;
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extern int persist;
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extern int uselogin;
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extern u_long lcp_echo_interval;
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extern u_long lcp_echo_fails;
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extern char our_name[];
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extern char remote_name[];
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int usehostname;
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int disable_defaultip;
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/*
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* Valid arguments.
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*/
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static struct cmd {
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char *cmd_name;
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int num_args;
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int (*cmd_func)();
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} cmds[] = {
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{"-all", 0, noopt}, /* Don't request/allow any options */
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{"-ac", 0, noaccomp}, /* Disable Address/Control compress */
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{"-am", 0, noasyncmap}, /* Disable asyncmap negotiation */
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{"-as", 1, setasyncmap}, /* set the desired async map */
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{"-d", 0, setdebug}, /* Increase debugging level */
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{"-detach", 0, setnodetach}, /* don't fork */
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{"-ip", 0, noipaddr}, /* Disable IP address negotiation */
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{"-mn", 0, nomagicnumber}, /* Disable magic number negotiation */
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{"-mru", 0, nomru}, /* Disable mru negotiation */
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{"-p", 0, setpassive}, /* Set passive mode */
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{"-pc", 0, nopcomp}, /* Disable protocol field compress */
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{"+ua", 1, setupapfile}, /* Get PAP user and password from file */
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{"+pap", 0, reqpap}, /* Require PAP auth from peer */
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{"-pap", 0, nopap}, /* Don't allow UPAP authentication with peer */
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{"+chap", 0, reqchap}, /* Require CHAP authentication from peer */
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{"-chap", 0, nochap}, /* Don't allow CHAP authentication with peer */
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{"-vj", 0, setnovj}, /* disable VJ compression */
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{"-vjccomp", 0, setnovjccomp}, /* disable VJ connection-ID compression */
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{"vj-max-slots", 1, setvjslots}, /* Set maximum VJ header slots */
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{"asyncmap", 1, setasyncmap}, /* set the desired async map */
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{"escape", 1, setescape}, /* set chars to escape on transmission */
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{"connect", 1, setconnector}, /* A program to set up a connection */
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{"disconnect", 1, setdisconnector}, /* program to disconnect serial dev. */
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{"crtscts", 0, setcrtscts}, /* set h/w flow control */
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{"xonxoff", 0, setxonxoff}, /* set s/w flow control */
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{"-crtscts", 0, setxonxoff}, /* another name for xonxoff */
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{"debug", 0, setdebug}, /* Increase debugging level */
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{"kdebug", 1, setkdebug}, /* Enable kernel-level debugging */
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{"domain", 1, setdomain}, /* Add given domain name to hostname*/
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{"mru", 1, setmru}, /* Set MRU value for negotiation */
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{"mtu", 1, setmtu}, /* Set our MTU */
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{"netmask", 1, setnetmask}, /* set netmask */
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{"passive", 0, setpassive}, /* Set passive mode */
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{"silent", 0, setsilent}, /* Set silent mode */
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{"modem", 0, setmodem}, /* Use modem control lines */
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{"local", 0, setlocal}, /* Don't use modem control lines */
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{"lock", 0, setlock}, /* Lock serial device (with lock file) */
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{"name", 1, setname}, /* Set local name for authentication */
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{"user", 1, setuser}, /* Set username for PAP auth with peer */
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{"usehostname", 0, setusehostname}, /* Must use hostname for auth. */
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{"remotename", 1, setremote}, /* Set remote name for authentication */
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{"auth", 0, setauth}, /* Require authentication from peer */
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{"file", 1, readfile}, /* Take options from a file */
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{"defaultroute", 0, setdefaultroute}, /* Add default route */
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{"proxyarp", 0, setproxyarp}, /* Add proxy ARP entry */
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{"persist", 0, setpersist}, /* Keep on reopening connection after close */
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{"login", 0, setdologin}, /* Use system password database for UPAP */
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{"noipdefault", 0, setnoipdflt}, /* Don't use name for default IP adrs */
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{"lcp-echo-failure", 1, setlcpechofails}, /* consecutive echo failures */
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{"lcp-echo-interval", 1, setlcpechointv}, /* time for lcp echo events */
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{"lcp-restart", 1, setlcptimeout}, /* Set timeout for LCP */
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{"lcp-max-terminate", 1, setlcpterm}, /* Set max #xmits for term-reqs */
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{"lcp-max-configure", 1, setlcpconf}, /* Set max #xmits for conf-reqs */
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{"lcp-max-failure", 1, setlcpfails}, /* Set max #conf-naks for LCP */
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{"ipcp-restart", 1, setipcptimeout}, /* Set timeout for IPCP */
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{"ipcp-max-terminate", 1, setipcpterm}, /* Set max #xmits for term-reqs */
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{"ipcp-max-configure", 1, setipcpconf}, /* Set max #xmits for conf-reqs */
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{"ipcp-max-failure", 1, setipcpfails}, /* Set max #conf-naks for IPCP */
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{"pap-restart", 1, setpaptimeout}, /* Set timeout for UPAP */
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{"pap-max-authreq", 1, setpapreqs}, /* Set max #xmits for auth-reqs */
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{"chap-restart", 1, setchaptimeout}, /* Set timeout for CHAP */
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{"chap-max-challenge", 1, setchapchal}, /* Set max #xmits for challenge */
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{"chap-interval", 1, setchapintv}, /* Set interval for rechallenge */
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{"ipcp-accept-local", 0, setipcpaccl}, /* Accept peer's address for us */
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{"ipcp-accept-remote", 0, setipcpaccr}, /* Accept peer's address for it */
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{NULL, 0, NULL}
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};
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#ifndef IMPLEMENTATION
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#define IMPLEMENTATION ""
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#endif
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static char *usage_string = "\
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pppd version %s patch level %d%s\n\
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Usage: %s [ arguments ], where arguments are:\n\
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<device> Communicate over the named device\n\
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<speed> Set the baud rate to <speed>\n\
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<loc>:<rem> Set the local and/or remote interface IP\n\
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addresses. Either one may be omitted.\n\
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asyncmap <n> Set the desired async map to hex <n>\n\
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auth Require authentication from peer\n\
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connect <p> Invoke shell command <p> to set up the serial line\n\
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crtscts Use hardware RTS/CTS flow control\n\
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defaultroute Add default route through interface\n\
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file <f> Take options from file <f>\n\
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modem Use modem control lines\n\
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mru <n> Set MRU value to <n> for negotiation\n\
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netmask <n> Set interface netmask to <n>\n\
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See pppd(8) for more options.\n\
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";
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/*
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* parse_args - parse a string of arguments, from the command
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* line or from a file.
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*/
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int
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parse_args(argc, argv)
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int argc;
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char **argv;
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{
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char *arg, *val;
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struct cmd *cmdp;
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int ret;
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while (argc > 0) {
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arg = *argv++;
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--argc;
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/*
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* First see if it's a command.
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*/
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for (cmdp = cmds; cmdp->cmd_name; cmdp++)
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if (!strcmp(arg, cmdp->cmd_name))
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break;
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if (cmdp->cmd_name != NULL) {
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if (argc < cmdp->num_args) {
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fprintf(stderr, "Too few parameters for command %s\n", arg);
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return 0;
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}
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if (!(*cmdp->cmd_func)(argv))
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return 0;
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argc -= cmdp->num_args;
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argv += cmdp->num_args;
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} else {
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/*
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* Maybe a tty name, speed or IP address?
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*/
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if ((ret = setdevname(arg)) == 0
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&& (ret = setspeed(arg)) == 0
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&& (ret = setipaddr(arg)) == 0) {
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fprintf(stderr, "%s: unrecognized command\n", arg);
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usage();
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return 0;
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}
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if (ret < 0) /* error */
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return 0;
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}
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}
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return 1;
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}
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/*
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* usage - print out a message telling how to use the program.
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*/
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usage()
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{
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fprintf(stderr, usage_string, VERSION, PATCHLEVEL, IMPLEMENTATION,
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progname);
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}
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/*
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* options_from_file - Read a string of options from a file,
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* and interpret them.
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*/
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int
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options_from_file(filename, must_exist, check_prot)
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char *filename;
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int must_exist;
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int check_prot;
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{
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FILE *f;
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int i, newline, ret;
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struct cmd *cmdp;
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char *argv[MAXARGS];
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char args[MAXARGS][MAXWORDLEN];
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char cmd[MAXWORDLEN];
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if ((f = fopen(filename, "r")) == NULL) {
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if (!must_exist && errno == ENOENT)
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return 1;
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perror(filename);
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return 0;
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}
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if (check_prot && !readable(fileno(f))) {
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fprintf(stderr, "%s: access denied\n", filename);
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fclose(f);
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return 0;
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}
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while (getword(f, cmd, &newline, filename)) {
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/*
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* First see if it's a command.
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*/
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for (cmdp = cmds; cmdp->cmd_name; cmdp++)
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if (!strcmp(cmd, cmdp->cmd_name))
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break;
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if (cmdp->cmd_name != NULL) {
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for (i = 0; i < cmdp->num_args; ++i) {
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if (!getword(f, args[i], &newline, filename)) {
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fprintf(stderr,
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"In file %s: too few parameters for command %s\n",
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filename, cmd);
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fclose(f);
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return 0;
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}
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argv[i] = args[i];
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}
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if (!(*cmdp->cmd_func)(argv)) {
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fclose(f);
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return 0;
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}
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} else {
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/*
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* Maybe a tty name, speed or IP address?
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*/
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if ((ret = setdevname(cmd)) == 0
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&& (ret = setspeed(cmd)) == 0
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&& (ret = setipaddr(cmd)) == 0) {
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fprintf(stderr, "In file %s: unrecognized command %s\n",
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filename, cmd);
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fclose(f);
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return 0;
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}
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if (ret < 0) /* error */
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return 0;
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}
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}
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return 1;
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}
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/*
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* options_from_user - See if the use has a ~/.ppprc file,
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* and if so, interpret options from it.
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*/
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int
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options_from_user()
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{
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char *user, *path, *file;
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int ret;
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struct passwd *pw;
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pw = getpwuid(getuid());
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if (pw == NULL || (user = pw->pw_dir) == NULL || user[0] == 0)
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return 1;
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file = _PATH_USEROPT;
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path = malloc(strlen(user) + strlen(file) + 2);
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if (path == NULL)
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novm("init file name");
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strcpy(path, user);
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strcat(path, "/");
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strcat(path, file);
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ret = options_from_file(path, 0, 1);
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free(path);
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return ret;
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}
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/*
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* options_for_tty - See if an options file exists for the serial
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* device, and if so, interpret options from it.
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*/
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int
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options_for_tty()
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{
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char *dev, *path;
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int ret;
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dev = strrchr(devname, '/');
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if (dev == NULL)
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dev = devname;
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else
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++dev;
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if (strcmp(dev, "tty") == 0)
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return 1; /* don't look for /etc/ppp/options.tty */
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path = malloc(strlen(_PATH_TTYOPT) + strlen(dev) + 1);
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if (path == NULL)
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novm("tty init file name");
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strcpy(path, _PATH_TTYOPT);
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strcat(path, dev);
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ret = options_from_file(path, 0, 0);
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free(path);
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return ret;
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}
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/*
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* readable - check if a file is readable by the real user.
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*/
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static int
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readable(fd)
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int fd;
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{
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uid_t uid;
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int ngroups, i;
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struct stat sbuf;
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GIDSET_TYPE groups[NGROUPS_MAX];
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uid = getuid();
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if (uid == 0)
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return 1;
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if (fstat(fd, &sbuf) != 0)
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return 0;
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if (sbuf.st_uid == uid)
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return sbuf.st_mode & S_IRUSR;
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if (sbuf.st_gid == getgid())
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return sbuf.st_mode & S_IRGRP;
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ngroups = getgroups(NGROUPS_MAX, groups);
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for (i = 0; i < ngroups; ++i)
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if (sbuf.st_gid == groups[i])
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return sbuf.st_mode & S_IRGRP;
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return sbuf.st_mode & S_IROTH;
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}
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/*
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* Read a word from a file.
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* Words are delimited by white-space or by quotes (").
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|
* Quotes, white-space and \ may be escaped with \.
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|
* \<newline> is ignored.
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*/
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|
int
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getword(f, word, newlinep, filename)
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FILE *f;
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char *word;
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int *newlinep;
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|
char *filename;
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|
{
|
|
int c, len, escape;
|
|
int quoted;
|
|
|
|
*newlinep = 0;
|
|
len = 0;
|
|
escape = 0;
|
|
quoted = 0;
|
|
|
|
/*
|
|
* First skip white-space and comments
|
|
*/
|
|
while ((c = getc(f)) != EOF) {
|
|
if (c == '\\') {
|
|
/*
|
|
* \<newline> is ignored; \ followed by anything else
|
|
* starts a word.
|
|
*/
|
|
if ((c = getc(f)) == '\n')
|
|
continue;
|
|
word[len++] = '\\';
|
|
escape = 1;
|
|
break;
|
|
}
|
|
if (c == '\n')
|
|
*newlinep = 1; /* next word starts a line */
|
|
else if (c == '#') {
|
|
/* comment - ignore until EOF or \n */
|
|
while ((c = getc(f)) != EOF && c != '\n')
|
|
;
|
|
if (c == EOF)
|
|
break;
|
|
*newlinep = 1;
|
|
} else if (!isspace(c))
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* End of file or error - fail
|
|
*/
|
|
if (c == EOF) {
|
|
if (ferror(f)) {
|
|
perror(filename);
|
|
die(1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
for (;;) {
|
|
/*
|
|
* Is this character escaped by \ ?
|
|
*/
|
|
if (escape) {
|
|
if (c == '\n')
|
|
--len; /* ignore \<newline> */
|
|
else if (c == '"' || isspace(c) || c == '\\')
|
|
word[len-1] = c; /* put special char in word */
|
|
else {
|
|
if (len < MAXWORDLEN-1)
|
|
word[len] = c;
|
|
++len;
|
|
}
|
|
escape = 0;
|
|
} else if (c == '"') {
|
|
quoted = !quoted;
|
|
} else if (!quoted && (isspace(c) || c == '#')) {
|
|
ungetc(c, f);
|
|
break;
|
|
} else {
|
|
if (len < MAXWORDLEN-1)
|
|
word[len] = c;
|
|
++len;
|
|
if (c == '\\')
|
|
escape = 1;
|
|
}
|
|
if ((c = getc(f)) == EOF)
|
|
break;
|
|
}
|
|
|
|
if (ferror(f)) {
|
|
perror(filename);
|
|
die(1);
|
|
}
|
|
|
|
if (len >= MAXWORDLEN) {
|
|
word[MAXWORDLEN-1] = 0;
|
|
fprintf(stderr, "%s: warning: word in file %s too long (%.20s...)\n",
|
|
progname, filename, word);
|
|
} else
|
|
word[len] = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* number_option - parse a numeric parameter for an option
|
|
*/
|
|
static int
|
|
number_option(str, valp, base)
|
|
char *str;
|
|
long *valp;
|
|
int base;
|
|
{
|
|
char *ptr;
|
|
|
|
*valp = strtol(str, &ptr, base);
|
|
if (ptr == str) {
|
|
fprintf(stderr, "%s: invalid number: %s\n", progname, str);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* int_option - like number_option, but valp is int *,
|
|
* the base is assumed to be 0, and *valp is not changed
|
|
* if there is an error.
|
|
*/
|
|
static int
|
|
int_option(str, valp)
|
|
char *str;
|
|
int *valp;
|
|
{
|
|
long v;
|
|
|
|
if (!number_option(str, &v, 0))
|
|
return 0;
|
|
*valp = (int) v;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* The following procedures execute commands.
|
|
*/
|
|
|
|
/*
|
|
* readfile - take commands from a file.
|
|
*/
|
|
static int
|
|
readfile(argv)
|
|
char **argv;
|
|
{
|
|
return options_from_file(*argv, 1, 1);
|
|
}
|
|
|
|
/*
|
|
* setdebug - Set debug (command line argument).
|
|
*/
|
|
static int
|
|
setdebug()
|
|
{
|
|
debug++;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setkdebug - Set kernel debugging level.
|
|
*/
|
|
static int
|
|
setkdebug(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &kdebugflag);
|
|
}
|
|
|
|
/*
|
|
* noopt - Disable all options.
|
|
*/
|
|
static int
|
|
noopt()
|
|
{
|
|
BZERO((char *) &lcp_wantoptions[0], sizeof (struct lcp_options));
|
|
BZERO((char *) &lcp_allowoptions[0], sizeof (struct lcp_options));
|
|
BZERO((char *) &ipcp_wantoptions[0], sizeof (struct ipcp_options));
|
|
BZERO((char *) &ipcp_allowoptions[0], sizeof (struct ipcp_options));
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* noaccomp - Disable Address/Control field compression negotiation.
|
|
*/
|
|
static int
|
|
noaccomp()
|
|
{
|
|
lcp_wantoptions[0].neg_accompression = 0;
|
|
lcp_allowoptions[0].neg_accompression = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* noasyncmap - Disable async map negotiation.
|
|
*/
|
|
static int
|
|
noasyncmap()
|
|
{
|
|
lcp_wantoptions[0].neg_asyncmap = 0;
|
|
lcp_allowoptions[0].neg_asyncmap = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* noipaddr - Disable IP address negotiation.
|
|
*/
|
|
static int
|
|
noipaddr()
|
|
{
|
|
ipcp_wantoptions[0].neg_addr = 0;
|
|
ipcp_allowoptions[0].neg_addr = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nomagicnumber - Disable magic number negotiation.
|
|
*/
|
|
static int
|
|
nomagicnumber()
|
|
{
|
|
lcp_wantoptions[0].neg_magicnumber = 0;
|
|
lcp_allowoptions[0].neg_magicnumber = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nomru - Disable mru negotiation.
|
|
*/
|
|
static int
|
|
nomru()
|
|
{
|
|
lcp_wantoptions[0].neg_mru = 0;
|
|
lcp_allowoptions[0].neg_mru = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setmru - Set MRU for negotiation.
|
|
*/
|
|
static int
|
|
setmru(argv)
|
|
char **argv;
|
|
{
|
|
long mru;
|
|
|
|
if (!number_option(*argv, &mru, 0))
|
|
return 0;
|
|
lcp_wantoptions[0].mru = mru;
|
|
lcp_wantoptions[0].neg_mru = 1;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setmru - Set the largest MTU we'll use.
|
|
*/
|
|
static int
|
|
setmtu(argv)
|
|
char **argv;
|
|
{
|
|
long mtu;
|
|
|
|
if (!number_option(*argv, &mtu, 0))
|
|
return 0;
|
|
if (mtu < MINMRU || mtu > MAXMRU) {
|
|
fprintf(stderr, "mtu option value of %d is too %s\n", mtu,
|
|
(mtu < MINMRU? "small": "large"));
|
|
return 0;
|
|
}
|
|
lcp_allowoptions[0].mru = mtu;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nopcomp - Disable Protocol field compression negotiation.
|
|
*/
|
|
static int
|
|
nopcomp()
|
|
{
|
|
lcp_wantoptions[0].neg_pcompression = 0;
|
|
lcp_allowoptions[0].neg_pcompression = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setpassive - Set passive mode (don't give up if we time out sending
|
|
* LCP configure-requests).
|
|
*/
|
|
static int
|
|
setpassive()
|
|
{
|
|
lcp_wantoptions[0].passive = 1;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setsilent - Set silent mode (don't start sending LCP configure-requests
|
|
* until we get one from the peer).
|
|
*/
|
|
static int
|
|
setsilent()
|
|
{
|
|
lcp_wantoptions[0].silent = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* nopap - Disable PAP authentication with peer.
|
|
*/
|
|
static int
|
|
nopap()
|
|
{
|
|
lcp_allowoptions[0].neg_upap = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* reqpap - Require PAP authentication from peer.
|
|
*/
|
|
static int
|
|
reqpap()
|
|
{
|
|
lcp_wantoptions[0].neg_upap = 1;
|
|
auth_required = 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setupapfile - specifies UPAP info for authenticating with peer.
|
|
*/
|
|
static int
|
|
setupapfile(argv)
|
|
char **argv;
|
|
{
|
|
FILE * ufile;
|
|
int l;
|
|
|
|
lcp_allowoptions[0].neg_upap = 1;
|
|
|
|
/* open user info file */
|
|
if ((ufile = fopen(*argv, "r")) == NULL) {
|
|
fprintf(stderr, "unable to open user login data file %s\n", *argv);
|
|
return 0;
|
|
}
|
|
if (!readable(fileno(ufile))) {
|
|
fprintf(stderr, "%s: access denied\n", *argv);
|
|
return 0;
|
|
}
|
|
check_access(ufile, *argv);
|
|
|
|
/* get username */
|
|
if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
|
|
|| fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
|
|
fprintf(stderr, "Unable to read user login data file %s.\n", *argv);
|
|
return 0;
|
|
}
|
|
fclose(ufile);
|
|
|
|
/* get rid of newlines */
|
|
l = strlen(user);
|
|
if (l > 0 && user[l-1] == '\n')
|
|
user[l-1] = 0;
|
|
l = strlen(passwd);
|
|
if (l > 0 && passwd[l-1] == '\n')
|
|
passwd[l-1] = 0;
|
|
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nochap - Disable CHAP authentication with peer.
|
|
*/
|
|
static int
|
|
nochap()
|
|
{
|
|
lcp_allowoptions[0].neg_chap = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* reqchap - Require CHAP authentication from peer.
|
|
*/
|
|
static int
|
|
reqchap()
|
|
{
|
|
lcp_wantoptions[0].neg_chap = 1;
|
|
auth_required = 1;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setnovj - disable vj compression
|
|
*/
|
|
static int
|
|
setnovj()
|
|
{
|
|
ipcp_wantoptions[0].neg_vj = 0;
|
|
ipcp_allowoptions[0].neg_vj = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setnovjccomp - disable VJ connection-ID compression
|
|
*/
|
|
static int
|
|
setnovjccomp()
|
|
{
|
|
ipcp_wantoptions[0].cflag = 0;
|
|
ipcp_allowoptions[0].cflag = 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* setvjslots - set maximum number of connection slots for VJ compression
|
|
*/
|
|
static int
|
|
setvjslots(argv)
|
|
char **argv;
|
|
{
|
|
int value;
|
|
|
|
if (!int_option(*argv, &value))
|
|
return 0;
|
|
if (value < 2 || value > 16) {
|
|
fprintf(stderr, "pppd: vj-max-slots value must be between 2 and 16\n");
|
|
return 0;
|
|
}
|
|
ipcp_wantoptions [0].maxslotindex =
|
|
ipcp_allowoptions[0].maxslotindex = value - 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setconnector - Set a program to connect to a serial line
|
|
*/
|
|
static int
|
|
setconnector(argv)
|
|
char **argv;
|
|
{
|
|
connector = strdup(*argv);
|
|
if (connector == NULL)
|
|
novm("connector string");
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setdisconnector - Set a program to disconnect from the serial line
|
|
*/
|
|
static int
|
|
setdisconnector(argv)
|
|
char **argv;
|
|
{
|
|
disconnector = strdup(*argv);
|
|
if (disconnector == NULL)
|
|
novm("disconnector string");
|
|
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setdomain - Set domain name to append to hostname
|
|
*/
|
|
static int
|
|
setdomain(argv)
|
|
char **argv;
|
|
{
|
|
strncat(hostname, *argv, MAXNAMELEN - strlen(hostname));
|
|
hostname[MAXNAMELEN-1] = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setasyncmap - add bits to asyncmap (what we request peer to escape).
|
|
*/
|
|
static int
|
|
setasyncmap(argv)
|
|
char **argv;
|
|
{
|
|
long asyncmap;
|
|
|
|
if (!number_option(*argv, &asyncmap, 16))
|
|
return 0;
|
|
lcp_wantoptions[0].asyncmap |= asyncmap;
|
|
lcp_wantoptions[0].neg_asyncmap = 1;
|
|
return(1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setescape - add chars to the set we escape on transmission.
|
|
*/
|
|
static int
|
|
setescape(argv)
|
|
char **argv;
|
|
{
|
|
int n, ret;
|
|
char *p, *endp;
|
|
|
|
p = *argv;
|
|
ret = 1;
|
|
while (*p) {
|
|
n = strtol(p, &endp, 16);
|
|
if (p == endp) {
|
|
fprintf(stderr, "%s: invalid hex number: %s\n", progname, p);
|
|
return 0;
|
|
}
|
|
p = endp;
|
|
if (n < 0 || 0x20 <= n && n <= 0x3F || n == 0x5E || n > 0xFF) {
|
|
fprintf(stderr, "%s: can't escape character 0x%x\n", n);
|
|
ret = 0;
|
|
} else
|
|
xmit_accm[0][n >> 5] |= 1 << (n & 0x1F);
|
|
while (*p == ',' || *p == ' ')
|
|
++p;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* setspeed - Set the speed.
|
|
*/
|
|
static int
|
|
setspeed(arg)
|
|
char *arg;
|
|
{
|
|
char *ptr;
|
|
int spd;
|
|
|
|
spd = strtol(arg, &ptr, 0);
|
|
if (ptr == arg || *ptr != 0 || spd == 0)
|
|
return 0;
|
|
inspeed = spd;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setdevname - Set the device name.
|
|
*/
|
|
int
|
|
setdevname(cp)
|
|
char *cp;
|
|
{
|
|
struct stat statbuf;
|
|
char *tty, *ttyname();
|
|
char dev[MAXPATHLEN];
|
|
|
|
if (strncmp("/dev/", cp, 5) != 0) {
|
|
strcpy(dev, "/dev/");
|
|
strncat(dev, cp, MAXPATHLEN - 5);
|
|
dev[MAXPATHLEN-1] = 0;
|
|
cp = dev;
|
|
}
|
|
|
|
/*
|
|
* Check if there is a device by this name.
|
|
*/
|
|
if (stat(cp, &statbuf) < 0) {
|
|
if (errno == ENOENT)
|
|
return 0;
|
|
syslog(LOG_ERR, cp);
|
|
return -1;
|
|
}
|
|
|
|
(void) strncpy(devname, cp, MAXPATHLEN);
|
|
devname[MAXPATHLEN-1] = 0;
|
|
default_device = FALSE;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipaddr - Set the IP address
|
|
*/
|
|
int
|
|
setipaddr(arg)
|
|
char *arg;
|
|
{
|
|
struct hostent *hp;
|
|
char *colon, *index();
|
|
u_long local, remote;
|
|
ipcp_options *wo = &ipcp_wantoptions[0];
|
|
|
|
/*
|
|
* IP address pair separated by ":".
|
|
*/
|
|
if ((colon = index(arg, ':')) == NULL)
|
|
return 0;
|
|
|
|
/*
|
|
* If colon first character, then no local addr.
|
|
*/
|
|
if (colon != arg) {
|
|
*colon = '\0';
|
|
if ((local = inet_addr(arg)) == -1) {
|
|
if ((hp = gethostbyname(arg)) == NULL) {
|
|
fprintf(stderr, "unknown host: %s\n", arg);
|
|
return -1;
|
|
} else {
|
|
local = *(long *)hp->h_addr;
|
|
if (our_name[0] == 0) {
|
|
strncpy(our_name, arg, MAXNAMELEN);
|
|
our_name[MAXNAMELEN-1] = 0;
|
|
}
|
|
}
|
|
}
|
|
if (bad_ip_adrs(local)) {
|
|
fprintf(stderr, "bad local IP address %s\n", ip_ntoa(local));
|
|
return -1;
|
|
}
|
|
if (local != 0)
|
|
wo->ouraddr = local;
|
|
*colon = ':';
|
|
}
|
|
|
|
/*
|
|
* If colon last character, then no remote addr.
|
|
*/
|
|
if (*++colon != '\0') {
|
|
if ((remote = inet_addr(colon)) == -1) {
|
|
if ((hp = gethostbyname(colon)) == NULL) {
|
|
fprintf(stderr, "unknown host: %s\n", colon);
|
|
return -1;
|
|
} else {
|
|
remote = *(long *)hp->h_addr;
|
|
if (remote_name[0] == 0) {
|
|
strncpy(remote_name, colon, MAXNAMELEN);
|
|
remote_name[MAXNAMELEN-1] = 0;
|
|
}
|
|
}
|
|
}
|
|
if (bad_ip_adrs(remote)) {
|
|
fprintf(stderr, "bad remote IP address %s\n", ip_ntoa(remote));
|
|
return -1;
|
|
}
|
|
if (remote != 0)
|
|
wo->hisaddr = remote;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setnoipdflt - disable setipdefault()
|
|
*/
|
|
static int
|
|
setnoipdflt()
|
|
{
|
|
disable_defaultip = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipcpaccl - accept peer's idea of our address
|
|
*/
|
|
static int
|
|
setipcpaccl()
|
|
{
|
|
ipcp_wantoptions[0].accept_local = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipcpaccr - accept peer's idea of its address
|
|
*/
|
|
static int
|
|
setipcpaccr()
|
|
{
|
|
ipcp_wantoptions[0].accept_remote = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipdefault - default our local IP address based on our hostname.
|
|
*/
|
|
void
|
|
setipdefault()
|
|
{
|
|
struct hostent *hp;
|
|
u_long local;
|
|
ipcp_options *wo = &ipcp_wantoptions[0];
|
|
|
|
/*
|
|
* If local IP address already given, don't bother.
|
|
*/
|
|
if (wo->ouraddr != 0 || disable_defaultip)
|
|
return;
|
|
|
|
/*
|
|
* Look up our hostname (possibly with domain name appended)
|
|
* and take the first IP address as our local IP address.
|
|
* If there isn't an IP address for our hostname, too bad.
|
|
*/
|
|
wo->accept_local = 1; /* don't insist on this default value */
|
|
if ((hp = gethostbyname(hostname)) == NULL)
|
|
return;
|
|
local = *(long *)hp->h_addr;
|
|
if (local != 0 && !bad_ip_adrs(local))
|
|
wo->ouraddr = local;
|
|
}
|
|
|
|
|
|
/*
|
|
* setnetmask - set the netmask to be used on the interface.
|
|
*/
|
|
static int
|
|
setnetmask(argv)
|
|
char **argv;
|
|
{
|
|
u_long mask;
|
|
|
|
if ((mask = inet_addr(*argv)) == -1 || (netmask & ~mask) != 0) {
|
|
fprintf(stderr, "Invalid netmask %s\n", *argv);
|
|
return 0;
|
|
}
|
|
|
|
netmask = mask;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Return user specified netmask. A value of zero means no netmask has
|
|
* been set.
|
|
*/
|
|
/* ARGSUSED */
|
|
u_long
|
|
GetMask(addr)
|
|
u_long addr;
|
|
{
|
|
return(netmask);
|
|
}
|
|
|
|
|
|
static int
|
|
setcrtscts()
|
|
{
|
|
crtscts = 1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setxonxoff()
|
|
{
|
|
crtscts = 2;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setnodetach()
|
|
{
|
|
nodetach = 1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setmodem()
|
|
{
|
|
modem = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setlocal()
|
|
{
|
|
modem = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setlock()
|
|
{
|
|
lockflag = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setusehostname()
|
|
{
|
|
usehostname = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setname(argv)
|
|
char **argv;
|
|
{
|
|
if (our_name[0] == 0) {
|
|
strncpy(our_name, argv[0], MAXNAMELEN);
|
|
our_name[MAXNAMELEN-1] = 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setuser(argv)
|
|
char **argv;
|
|
{
|
|
strncpy(user, argv[0], MAXNAMELEN);
|
|
user[MAXNAMELEN-1] = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setremote(argv)
|
|
char **argv;
|
|
{
|
|
strncpy(remote_name, argv[0], MAXNAMELEN);
|
|
remote_name[MAXNAMELEN-1] = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setauth()
|
|
{
|
|
auth_required = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setdefaultroute()
|
|
{
|
|
ipcp_wantoptions[0].default_route = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setproxyarp()
|
|
{
|
|
ipcp_wantoptions[0].proxy_arp = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setpersist()
|
|
{
|
|
persist = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setdologin()
|
|
{
|
|
uselogin = 1;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Functions to set the echo interval for modem-less monitors
|
|
*/
|
|
|
|
static int
|
|
setlcpechointv(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_echo_interval);
|
|
}
|
|
|
|
static int
|
|
setlcpechofails(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_echo_fails);
|
|
}
|
|
|
|
/*
|
|
* Functions to set timeouts, max transmits, etc.
|
|
*/
|
|
static int
|
|
setlcptimeout(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].timeouttime);
|
|
}
|
|
|
|
static int setlcpterm(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxtermtransmits);
|
|
}
|
|
|
|
static int setlcpconf(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxconfreqtransmits);
|
|
}
|
|
|
|
static int setlcpfails(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxnakloops);
|
|
}
|
|
|
|
static int setipcptimeout(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipcp_fsm[0].timeouttime);
|
|
}
|
|
|
|
static int setipcpterm(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipcp_fsm[0].maxtermtransmits);
|
|
}
|
|
|
|
static int setipcpconf(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipcp_fsm[0].maxconfreqtransmits);
|
|
}
|
|
|
|
static int setipcpfails(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxnakloops);
|
|
}
|
|
|
|
static int setpaptimeout(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &upap[0].us_timeouttime);
|
|
}
|
|
|
|
static int setpapreqs(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &upap[0].us_maxtransmits);
|
|
}
|
|
|
|
static int setchaptimeout(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &chap[0].timeouttime);
|
|
}
|
|
|
|
static int setchapchal(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &chap[0].max_transmits);
|
|
}
|
|
|
|
static int setchapintv(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &chap[0].chal_interval);
|
|
}
|