2130 lines
45 KiB
C
2130 lines
45 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 1.13 1996/03/28 02:50:59 paulus Exp $";
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#endif
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#include <ctype.h>
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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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#include <stdlib.h>
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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 <arpa/inet.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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#include "ccp.h"
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#include "bpf_compile.h"
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#ifdef IPX_CHANGE
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#include "ipxcp.h"
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#endif /* IPX_CHANGE */
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#include <net/ppp-comp.h>
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#define FALSE 0
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#define TRUE 1
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#if defined(ultrix) || defined(NeXT)
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char *strdup __P((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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* Option variables and default values.
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*/
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int debug = 0; /* Debug flag */
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int kdebugflag = 0; /* Tell kernel to print debug messages */
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int default_device = 1; /* Using /dev/tty or equivalent */
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char devnam[MAXPATHLEN] = "/dev/tty"; /* Device name */
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int crtscts = 0; /* Use hardware flow control */
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int modem = 1; /* Use modem control lines */
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int inspeed = 0; /* Input/Output speed requested */
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u_int32_t netmask = 0; /* IP netmask to set on interface */
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int lockflag = 0; /* Create lock file to lock the serial dev */
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int nodetach = 0; /* Don't detach from controlling tty */
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char *connector = NULL; /* Script to establish physical link */
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char *disconnector = NULL; /* Script to disestablish physical link */
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char *welcomer = NULL; /* Script to run after phys link estab. */
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int maxconnect = 0; /* Maximum connect time */
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char user[MAXNAMELEN]; /* Username for PAP */
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char passwd[MAXSECRETLEN]; /* Password for PAP */
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int auth_required = 0; /* Peer is required to authenticate */
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int defaultroute = 0; /* assign default route through interface */
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int proxyarp = 0; /* Set up proxy ARP entry for peer */
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int persist = 0; /* Reopen link after it goes down */
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int uselogin = 0; /* Use /etc/passwd for checking PAP */
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int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
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int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
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char our_name[MAXNAMELEN]; /* Our name for authentication purposes */
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char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
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int usehostname = 0; /* Use hostname for our_name */
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int disable_defaultip = 0; /* Don't use hostname for default IP adrs */
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int demand = 0; /* do dial-on-demand */
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char *ipparam = NULL; /* Extra parameter for ip up/down scripts */
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int cryptpap; /* Passwords in pap-secrets are encrypted */
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int idle_time_limit = 0; /* Disconnect if idle for this many seconds */
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int holdoff = 30; /* # seconds to pause before reconnecting */
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struct bpf_program pass_filter;/* Filter program for packets to pass */
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struct bpf_program active_filter; /* Filter program for link-active pkts */
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/*
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* Prototypes
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*/
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static int setdevname __P((char *));
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static int setipaddr __P((char *));
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static int setdebug __P((void));
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static int setkdebug __P((char **));
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static int setpassive __P((void));
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static int setsilent __P((void));
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static int noopt __P((void));
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static int setnovj __P((void));
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static int setnovjccomp __P((void));
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static int setvjslots __P((char **));
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static int reqpap __P((void));
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static int nopap __P((void));
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static int setupapfile __P((char **));
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static int nochap __P((void));
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static int reqchap __P((void));
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static int setspeed __P((char *));
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static int noaccomp __P((void));
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static int noasyncmap __P((void));
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static int noip __P((void));
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static int nomagicnumber __P((void));
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static int setasyncmap __P((char **));
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static int setescape __P((char **));
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static int setmru __P((char **));
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static int setmtu __P((char **));
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static int nomru __P((void));
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static int nopcomp __P((void));
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static int setconnector __P((char **));
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static int setdisconnector __P((char **));
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static int setwelcomer __P((char **));
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static int setmaxconnect __P((char **));
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static int setdomain __P((char **));
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static int setnetmask __P((char **));
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static int setcrtscts __P((void));
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static int setnocrtscts __P((void));
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static int setxonxoff __P((void));
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static int setnodetach __P((void));
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static int setmodem __P((void));
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static int setlocal __P((void));
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static int setlock __P((void));
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static int setname __P((char **));
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static int setuser __P((char **));
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static int setremote __P((char **));
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static int setauth __P((void));
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static int readfile __P((char **));
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static int setdefaultroute __P((void));
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static int setnodefaultroute __P((void));
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static int setproxyarp __P((void));
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static int setnoproxyarp __P((void));
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static int setpersist __P((void));
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static int setdologin __P((void));
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static int setusehostname __P((void));
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static int setnoipdflt __P((void));
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static int setlcptimeout __P((char **));
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static int setlcpterm __P((char **));
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static int setlcpconf __P((char **));
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static int setlcpfails __P((char **));
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static int setipcptimeout __P((char **));
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static int setipcpterm __P((char **));
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static int setipcpconf __P((char **));
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static int setipcpfails __P((char **));
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static int setpaptimeout __P((char **));
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static int setpapreqs __P((char **));
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static int setpapreqtime __P((char **));
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static int setchaptimeout __P((char **));
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static int setchapchal __P((char **));
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static int setchapintv __P((char **));
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static int setipcpaccl __P((void));
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static int setipcpaccr __P((void));
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static int setlcpechointv __P((char **));
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static int setlcpechofails __P((char **));
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static int noccp __P((void));
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static int setbsdcomp __P((char **));
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static int setnobsdcomp __P((void));
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static int setdeflate __P((char **));
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static int setnodeflate __P((void));
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static int setdemand __P((void));
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static int setpred1comp __P((void));
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static int setnopred1comp __P((void));
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static int setipparam __P((char **));
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static int setpapcrypt __P((void));
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static int setidle __P((char **));
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static int setholdoff __P((char **));
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static int setpassfilter __P((char **));
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static int setactivefilter __P((char **));
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#ifdef IPX_CHANGE
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static int setipxproto __P((void));
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static int resetipxproto __P((void));
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static int setipxanet __P((void));
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static int setipxalcl __P((void));
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static int setipxarmt __P((void));
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static int setipxnetwork __P((char **));
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static int setipxnode __P((char **));
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static int setipxrouter __P((char **));
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static int setipxname __P((char **));
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static int setipxcptimeout __P((char **));
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static int setipxcpterm __P((char **));
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static int setipxcpconf __P((char **));
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static int setipxcpfails __P((char **));
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#endif /* IPX_CHANGE */
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#ifdef USE_MS_DNS
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static int setdnsaddr __P((char **));
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#endif
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static int number_option __P((char *, u_int32_t *, int));
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static int readable __P((int fd));
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void usage();
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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, noip}, /* Disable IP and IPCP */
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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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{"welcome", 1, setwelcomer},/* Script to welcome client */
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{"maxconnect", 1, setmaxconnect}, /* specify a maximum connect time */
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{"crtscts", 0, setcrtscts}, /* set h/w flow control */
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{"-crtscts", 0, setnocrtscts}, /* clear h/w flow control */
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{"xonxoff", 0, setxonxoff}, /* set s/w flow control */
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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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{"-defaultroute", 0, setnodefaultroute}, /* disable defaultroute option */
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{"proxyarp", 0, setproxyarp}, /* Add proxy ARP entry */
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{"-proxyarp", 0, setnoproxyarp}, /* disable proxyarp option */
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{"persist", 0, setpersist}, /* Keep on reopening connection after close */
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{"demand", 0, setdemand}, /* Dial on demand */
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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 retransmit timeout for PAP */
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{"pap-max-authreq", 1, setpapreqs}, /* Set max #xmits for auth-reqs */
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{"pap-timeout", 1, setpapreqtime}, /* Set time limit for peer PAP auth. */
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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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{"-ccp", 0, noccp}, /* Disable CCP negotiation */
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{"bsdcomp", 1, setbsdcomp}, /* request BSD-Compress */
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{"-bsdcomp", 0, setnobsdcomp}, /* don't allow BSD-Compress */
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{"deflate", 1, setdeflate}, /* request Deflate compression */
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{"-deflate", 0, setnodeflate}, /* don't allow Deflate compression */
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{"predictor1", 0, setpred1comp}, /* request Predictor-1 */
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{"-predictor1", 0, setnopred1comp}, /* don't allow Predictor-1 */
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{"ipparam", 1, setipparam}, /* set ip script parameter */
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{"papcrypt", 0, setpapcrypt}, /* PAP passwords encrypted */
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{"idle", 1, setidle}, /* idle time limit (seconds) */
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{"holdoff", 1, setholdoff}, /* set holdoff time (seconds) */
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{"pass-filter", 1, setpassfilter}, /* set filter for packets to pass */
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{"active-filter", 1, setactivefilter}, /* set filter for active pkts */
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#ifdef IPX_CHANGE
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{"ipx-network", 1, setipxnetwork}, /* IPX network number */
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{"ipxcp-accept-network", 0, setipxanet}, /* Accept peer netowrk */
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{"ipx-node", 1, setipxnode}, /* IPX node number */
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{"ipxcp-accept-local", 0, setipxalcl}, /* Accept our address */
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{"ipxcp-accept-remote", 0, setipxarmt}, /* Accept peer's address */
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{"ipx-routing", 1, setipxrouter}, /* IPX routing proto number */
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{"ipx-router-name", 1, setipxname}, /* IPX router name */
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{"ipxcp-restart", 1, setipxcptimeout}, /* Set timeout for IPXCP */
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{"ipxcp-max-terminate", 1, setipxcpterm}, /* max #xmits for term-reqs */
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{"ipxcp-max-configure", 1, setipxcpconf}, /* max #xmits for conf-reqs */
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{"ipxcp-max-failure", 1, setipxcpfails}, /* max #conf-naks for IPXCP */
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#if 0
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{"ipx-compression", 1, setipxcompression}, /* IPX compression number */
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#endif
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{"+ipx", 0, setipxproto}, /* Enable IPXCP (and IPX) */
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{"-ipx", 0, resetipxproto}, /* Disable IPXCP (and IPX) */
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#endif /* IPX_CHANGE */
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#ifdef _linux_
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{"idle-disconnect", 1, setidle}, /* seconds for disconnect of idle IP */
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#endif
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#ifdef USE_MS_DNS
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{"ms-dns", 1, setdnsaddr}, /* DNS address(es) for the peer's use */
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#endif
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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;
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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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/*
|
|
* usage - print out a message telling how to use the program.
|
|
*/
|
|
void
|
|
usage()
|
|
{
|
|
fprintf(stderr, usage_string, VERSION, PATCHLEVEL, IMPLEMENTATION,
|
|
progname);
|
|
}
|
|
|
|
/*
|
|
* options_from_file - Read a string of options from a file,
|
|
* and interpret them.
|
|
*/
|
|
int
|
|
options_from_file(filename, must_exist, check_prot)
|
|
char *filename;
|
|
int must_exist;
|
|
int check_prot;
|
|
{
|
|
FILE *f;
|
|
int i, newline, ret;
|
|
struct cmd *cmdp;
|
|
char *argv[MAXARGS];
|
|
char args[MAXARGS][MAXWORDLEN];
|
|
char cmd[MAXWORDLEN];
|
|
|
|
if ((f = fopen(filename, "r")) == NULL) {
|
|
if (!must_exist && errno == ENOENT)
|
|
return 1;
|
|
perror(filename);
|
|
return 0;
|
|
}
|
|
if (check_prot && !readable(fileno(f))) {
|
|
fprintf(stderr, "%s: access denied\n", filename);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
|
|
while (getword(f, cmd, &newline, filename)) {
|
|
/*
|
|
* First see if it's a command.
|
|
*/
|
|
for (cmdp = cmds; cmdp->cmd_name; cmdp++)
|
|
if (!strcmp(cmd, cmdp->cmd_name))
|
|
break;
|
|
|
|
if (cmdp->cmd_name != NULL) {
|
|
for (i = 0; i < cmdp->num_args; ++i) {
|
|
if (!getword(f, args[i], &newline, filename)) {
|
|
fprintf(stderr,
|
|
"In file %s: too few parameters for command %s\n",
|
|
filename, cmd);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
argv[i] = args[i];
|
|
}
|
|
if (!(*cmdp->cmd_func)(argv)) {
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
|
|
} else {
|
|
/*
|
|
* Maybe a tty name, speed or IP address?
|
|
*/
|
|
if ((ret = setdevname(cmd)) == 0
|
|
&& (ret = setspeed(cmd)) == 0
|
|
&& (ret = setipaddr(cmd)) == 0) {
|
|
fprintf(stderr, "In file %s: unrecognized command %s\n",
|
|
filename, cmd);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
if (ret < 0) /* error */
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* options_from_user - See if the use has a ~/.ppprc file,
|
|
* and if so, interpret options from it.
|
|
*/
|
|
int
|
|
options_from_user()
|
|
{
|
|
char *user, *path, *file;
|
|
int ret;
|
|
struct passwd *pw;
|
|
|
|
pw = getpwuid(getuid());
|
|
if (pw == NULL || (user = pw->pw_dir) == NULL || user[0] == 0)
|
|
return 1;
|
|
file = _PATH_USEROPT;
|
|
path = malloc(strlen(user) + strlen(file) + 2);
|
|
if (path == NULL)
|
|
novm("init file name");
|
|
strcpy(path, user);
|
|
strcat(path, "/");
|
|
strcat(path, file);
|
|
ret = options_from_file(path, 0, 1);
|
|
free(path);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* options_for_tty - See if an options file exists for the serial
|
|
* device, and if so, interpret options from it.
|
|
*/
|
|
int
|
|
options_for_tty()
|
|
{
|
|
char *dev, *path, *p;
|
|
int ret;
|
|
|
|
dev = devnam;
|
|
if (strncmp(dev, "/dev/", 5) == 0)
|
|
dev += 5;
|
|
if (strcmp(dev, "tty") == 0)
|
|
return 1; /* don't look for /etc/ppp/options.tty */
|
|
path = malloc(strlen(_PATH_TTYOPT) + strlen(dev) + 1);
|
|
if (path == NULL)
|
|
novm("tty init file name");
|
|
strcpy(path, _PATH_TTYOPT);
|
|
/* Turn slashes into dots, for Solaris case (e.g. /dev/term/a) */
|
|
for (p = path + strlen(path); *dev != 0; ++dev)
|
|
*p++ = (*dev == '/'? '.': *dev);
|
|
*p = 0;
|
|
ret = options_from_file(path, 0, 0);
|
|
free(path);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* readable - check if a file is readable by the real user.
|
|
*/
|
|
static int
|
|
readable(fd)
|
|
int fd;
|
|
{
|
|
uid_t uid;
|
|
int ngroups, i;
|
|
struct stat sbuf;
|
|
GIDSET_TYPE groups[NGROUPS_MAX];
|
|
|
|
uid = getuid();
|
|
if (uid == 0)
|
|
return 1;
|
|
if (fstat(fd, &sbuf) != 0)
|
|
return 0;
|
|
if (sbuf.st_uid == uid)
|
|
return sbuf.st_mode & S_IRUSR;
|
|
if (sbuf.st_gid == getgid())
|
|
return sbuf.st_mode & S_IRGRP;
|
|
ngroups = getgroups(NGROUPS_MAX, groups);
|
|
for (i = 0; i < ngroups; ++i)
|
|
if (sbuf.st_gid == groups[i])
|
|
return sbuf.st_mode & S_IRGRP;
|
|
return sbuf.st_mode & S_IROTH;
|
|
}
|
|
|
|
/*
|
|
* Read a word from a file.
|
|
* Words are delimited by white-space or by quotes (" or ').
|
|
* Quotes, white-space and \ may be escaped with \.
|
|
* \<newline> is ignored.
|
|
*/
|
|
int
|
|
getword(f, word, newlinep, filename)
|
|
FILE *f;
|
|
char *word;
|
|
int *newlinep;
|
|
char *filename;
|
|
{
|
|
int c, len, escape;
|
|
int quoted, comment;
|
|
int value, digit, got, n;
|
|
|
|
#define isoctal(c) ((c) >= '0' && (c) < '8')
|
|
|
|
*newlinep = 0;
|
|
len = 0;
|
|
escape = 0;
|
|
comment = 0;
|
|
|
|
/*
|
|
* First skip white-space and comments.
|
|
*/
|
|
for (;;) {
|
|
c = getc(f);
|
|
if (c == EOF)
|
|
break;
|
|
|
|
/*
|
|
* A newline means the end of a comment; backslash-newline
|
|
* is ignored. Note that we cannot have escape && comment.
|
|
*/
|
|
if (c == '\n') {
|
|
if (!escape) {
|
|
*newlinep = 1;
|
|
comment = 0;
|
|
} else
|
|
escape = 0;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Ignore characters other than newline in a comment.
|
|
*/
|
|
if (comment)
|
|
continue;
|
|
|
|
/*
|
|
* If this character is escaped, we have a word start.
|
|
*/
|
|
if (escape)
|
|
break;
|
|
|
|
/*
|
|
* If this is the escape character, look at the next character.
|
|
*/
|
|
if (c == '\\') {
|
|
escape = 1;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If this is the start of a comment, ignore the rest of the line.
|
|
*/
|
|
if (c == '#') {
|
|
comment = 1;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* A non-whitespace character is the start of a word.
|
|
*/
|
|
if (!isspace(c))
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Save the delimiter for quoted strings.
|
|
*/
|
|
if (!escape && (c == '"' || c == '\'')) {
|
|
quoted = c;
|
|
c = getc(f);
|
|
} else
|
|
quoted = 0;
|
|
|
|
/*
|
|
* Process characters until the end of the word.
|
|
*/
|
|
while (c != EOF) {
|
|
if (escape) {
|
|
/*
|
|
* This character is escaped: backslash-newline is ignored,
|
|
* various other characters indicate particular values
|
|
* as for C backslash-escapes.
|
|
*/
|
|
escape = 0;
|
|
if (c == '\n') {
|
|
c = getc(f);
|
|
continue;
|
|
}
|
|
|
|
got = 0;
|
|
switch (c) {
|
|
case 'a':
|
|
value = '\a';
|
|
break;
|
|
case 'b':
|
|
value = '\b';
|
|
break;
|
|
case 'f':
|
|
value = '\f';
|
|
break;
|
|
case 'n':
|
|
value = '\n';
|
|
break;
|
|
case 'r':
|
|
value = '\r';
|
|
break;
|
|
case 's':
|
|
value = ' ';
|
|
break;
|
|
case 't':
|
|
value = '\t';
|
|
break;
|
|
|
|
default:
|
|
if (isoctal(c)) {
|
|
/*
|
|
* \ddd octal sequence
|
|
*/
|
|
value = 0;
|
|
for (n = 0; n < 3 && isoctal(c); ++n) {
|
|
value = (value << 3) + (c & 07);
|
|
c = getc(f);
|
|
}
|
|
got = 1;
|
|
break;
|
|
}
|
|
|
|
if (c == 'x') {
|
|
/*
|
|
* \x<hex_string> sequence
|
|
*/
|
|
value = 0;
|
|
c = getc(f);
|
|
for (n = 0; n < 2 && isxdigit(c); ++n) {
|
|
digit = toupper(c) - '0';
|
|
if (digit > 10)
|
|
digit += '0' + 10 - 'A';
|
|
value = (value << 4) + digit;
|
|
c = getc (f);
|
|
}
|
|
got = 1;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Otherwise the character stands for itself.
|
|
*/
|
|
value = c;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Store the resulting character for the escape sequence.
|
|
*/
|
|
if (len < MAXWORDLEN-1)
|
|
word[len] = value;
|
|
++len;
|
|
|
|
if (!got)
|
|
c = getc(f);
|
|
continue;
|
|
|
|
}
|
|
|
|
/*
|
|
* Not escaped: see if we've reached the end of the word.
|
|
*/
|
|
if (quoted) {
|
|
if (c == quoted)
|
|
break;
|
|
} else {
|
|
if (isspace(c) || c == '#') {
|
|
ungetc (c, f);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Backslash starts an escape sequence.
|
|
*/
|
|
if (c == '\\') {
|
|
escape = 1;
|
|
c = getc(f);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* An ordinary character: store it in the word and get another.
|
|
*/
|
|
if (len < MAXWORDLEN-1)
|
|
word[len] = c;
|
|
++len;
|
|
|
|
c = getc(f);
|
|
}
|
|
|
|
/*
|
|
* End of the word: check for errors.
|
|
*/
|
|
if (c == EOF) {
|
|
if (ferror(f)) {
|
|
if (errno == 0)
|
|
errno = EIO;
|
|
perror(filename);
|
|
die(1);
|
|
}
|
|
/*
|
|
* If len is zero, then we didn't find a word before the
|
|
* end of the file.
|
|
*/
|
|
if (len == 0)
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Warn if the word was too long, and append a terminating null.
|
|
*/
|
|
if (len >= MAXWORDLEN) {
|
|
fprintf(stderr, "%s: warning: word in file %s too long (%.20s...)\n",
|
|
progname, filename, word);
|
|
len = MAXWORDLEN - 1;
|
|
}
|
|
word[len] = 0;
|
|
|
|
return 1;
|
|
|
|
#undef isoctal
|
|
|
|
}
|
|
|
|
/*
|
|
* number_option - parse an unsigned numeric parameter for an option.
|
|
*/
|
|
static int
|
|
number_option(str, valp, base)
|
|
char *str;
|
|
u_int32_t *valp;
|
|
int base;
|
|
{
|
|
char *ptr;
|
|
|
|
*valp = strtoul(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;
|
|
{
|
|
u_int32_t 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));
|
|
|
|
#ifdef IPX_CHANGE
|
|
BZERO((char *) &ipxcp_wantoptions[0], sizeof (struct ipxcp_options));
|
|
BZERO((char *) &ipxcp_allowoptions[0], sizeof (struct ipxcp_options));
|
|
#endif /* IPX_CHANGE */
|
|
|
|
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);
|
|
}
|
|
|
|
|
|
/*
|
|
* noip - Disable IP and IPCP.
|
|
*/
|
|
static int
|
|
noip()
|
|
{
|
|
ipcp_protent.enabled_flag = 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;
|
|
{
|
|
u_int32_t 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;
|
|
{
|
|
u_int32_t mtu;
|
|
|
|
if (!number_option(*argv, &mtu, 0))
|
|
return 0;
|
|
if (mtu < MINMRU || mtu > MAXMRU) {
|
|
fprintf(stderr, "mtu option value of %ld 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;
|
|
return 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;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* 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("connect script");
|
|
|
|
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("disconnect script");
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setwelcomer - Set a program to welcome a client after connection
|
|
*/
|
|
static int
|
|
setwelcomer(argv)
|
|
char **argv;
|
|
{
|
|
welcomer = strdup(*argv);
|
|
if (welcomer == NULL)
|
|
novm("welcome script");
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setmaxconnect - Set the maximum connect time
|
|
*/
|
|
static int
|
|
setmaxconnect(argv)
|
|
char **argv;
|
|
{
|
|
int value;
|
|
|
|
if (!int_option(*argv, &value))
|
|
return 0;
|
|
if (value < 0) {
|
|
fprintf(stderr, "pppd: maxconnect time must be positive\n");
|
|
return 0;
|
|
}
|
|
maxconnect = value;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* setdomain - Set domain name to append to hostname
|
|
*/
|
|
static int
|
|
setdomain(argv)
|
|
char **argv;
|
|
{
|
|
gethostname(hostname, MAXNAMELEN);
|
|
if (**argv != 0) {
|
|
if (**argv != '.')
|
|
strncat(hostname, ".", MAXNAMELEN - strlen(hostname));
|
|
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;
|
|
{
|
|
u_int32_t 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", progname, 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.
|
|
*/
|
|
static int
|
|
setdevname(cp)
|
|
char *cp;
|
|
{
|
|
struct stat statbuf;
|
|
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(devnam, cp, MAXPATHLEN);
|
|
devnam[MAXPATHLEN-1] = 0;
|
|
default_device = FALSE;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipaddr - Set the IP address
|
|
*/
|
|
static int
|
|
setipaddr(arg)
|
|
char *arg;
|
|
{
|
|
struct hostent *hp;
|
|
char *colon;
|
|
u_int32_t local, remote;
|
|
ipcp_options *wo = &ipcp_wantoptions[0];
|
|
|
|
/*
|
|
* IP address pair separated by ":".
|
|
*/
|
|
if ((colon = strchr(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 = *(u_int32_t *)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 = *(u_int32_t *)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;
|
|
}
|
|
|
|
|
|
/*
|
|
* setnetmask - set the netmask to be used on the interface.
|
|
*/
|
|
static int
|
|
setnetmask(argv)
|
|
char **argv;
|
|
{
|
|
u_int32_t mask;
|
|
|
|
if ((mask = inet_addr(*argv)) == -1 || (netmask & ~mask) != 0) {
|
|
fprintf(stderr, "Invalid netmask %s\n", *argv);
|
|
return 0;
|
|
}
|
|
|
|
netmask = mask;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setcrtscts()
|
|
{
|
|
crtscts = 1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setnocrtscts()
|
|
{
|
|
crtscts = -1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setxonxoff()
|
|
{
|
|
lcp_wantoptions[0].asyncmap |= 0x000A0000; /* escape ^S and ^Q */
|
|
lcp_wantoptions[0].neg_asyncmap = 1;
|
|
|
|
crtscts = -2;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setnodetach()
|
|
{
|
|
nodetach = 1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setdemand()
|
|
{
|
|
demand = 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()
|
|
{
|
|
if (!ipcp_allowoptions[0].default_route) {
|
|
fprintf(stderr, "%s: defaultroute option is disabled\n", progname);
|
|
return 0;
|
|
}
|
|
ipcp_wantoptions[0].default_route = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnodefaultroute()
|
|
{
|
|
ipcp_allowoptions[0].default_route = 0;
|
|
ipcp_wantoptions[0].default_route = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setproxyarp()
|
|
{
|
|
if (!ipcp_allowoptions[0].proxy_arp) {
|
|
fprintf(stderr, "%s: proxyarp option is disabled\n", progname);
|
|
return 0;
|
|
}
|
|
ipcp_wantoptions[0].proxy_arp = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnoproxyarp()
|
|
{
|
|
ipcp_wantoptions[0].proxy_arp = 0;
|
|
ipcp_allowoptions[0].proxy_arp = 0;
|
|
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
|
|
setpapreqtime(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &upap[0].us_reqtimeout);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static int
|
|
noccp()
|
|
{
|
|
ccp_protent.enabled_flag = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setbsdcomp(argv)
|
|
char **argv;
|
|
{
|
|
int rbits, abits;
|
|
char *str, *endp;
|
|
|
|
str = *argv;
|
|
abits = rbits = strtol(str, &endp, 0);
|
|
if (endp != str && *endp == ',') {
|
|
str = endp + 1;
|
|
abits = strtol(str, &endp, 0);
|
|
}
|
|
if (*endp != 0 || endp == str) {
|
|
fprintf(stderr, "%s: invalid argument format for bsdcomp option\n",
|
|
progname);
|
|
return 0;
|
|
}
|
|
if (rbits != 0 && (rbits < BSD_MIN_BITS || rbits > BSD_MAX_BITS)
|
|
|| abits != 0 && (abits < BSD_MIN_BITS || abits > BSD_MAX_BITS)) {
|
|
fprintf(stderr, "%s: bsdcomp option values must be 0 or %d .. %d\n",
|
|
progname, BSD_MIN_BITS, BSD_MAX_BITS);
|
|
return 0;
|
|
}
|
|
if (rbits > 0) {
|
|
ccp_wantoptions[0].bsd_compress = 1;
|
|
ccp_wantoptions[0].bsd_bits = rbits;
|
|
} else
|
|
ccp_wantoptions[0].bsd_compress = 0;
|
|
if (abits > 0) {
|
|
ccp_allowoptions[0].bsd_compress = 1;
|
|
ccp_allowoptions[0].bsd_bits = abits;
|
|
} else
|
|
ccp_allowoptions[0].bsd_compress = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnobsdcomp()
|
|
{
|
|
ccp_wantoptions[0].bsd_compress = 0;
|
|
ccp_allowoptions[0].bsd_compress = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setdeflate(argv)
|
|
char **argv;
|
|
{
|
|
int rbits, abits;
|
|
char *str, *endp;
|
|
|
|
str = *argv;
|
|
abits = rbits = strtol(str, &endp, 0);
|
|
if (endp != str && *endp == ',') {
|
|
str = endp + 1;
|
|
abits = strtol(str, &endp, 0);
|
|
}
|
|
if (*endp != 0 || endp == str) {
|
|
fprintf(stderr, "%s: invalid argument format for deflate option\n",
|
|
progname);
|
|
return 0;
|
|
}
|
|
if (rbits != 0 && (rbits < DEFLATE_MIN_SIZE || rbits > DEFLATE_MAX_SIZE)
|
|
|| abits != 0 && (abits < DEFLATE_MIN_SIZE
|
|
|| abits > DEFLATE_MAX_SIZE)) {
|
|
fprintf(stderr, "%s: deflate option values must be 0 or %d .. %d\n",
|
|
progname, DEFLATE_MIN_SIZE, DEFLATE_MAX_SIZE);
|
|
return 0;
|
|
}
|
|
if (rbits > 0) {
|
|
ccp_wantoptions[0].deflate = 1;
|
|
ccp_wantoptions[0].deflate_size = rbits;
|
|
} else
|
|
ccp_wantoptions[0].deflate = 0;
|
|
if (abits > 0) {
|
|
ccp_allowoptions[0].deflate = 1;
|
|
ccp_allowoptions[0].deflate_size = abits;
|
|
} else
|
|
ccp_allowoptions[0].deflate = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnodeflate()
|
|
{
|
|
ccp_wantoptions[0].deflate = 0;
|
|
ccp_allowoptions[0].deflate = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setpred1comp()
|
|
{
|
|
ccp_wantoptions[0].predictor_1 = 1;
|
|
ccp_allowoptions[0].predictor_1 = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnopred1comp()
|
|
{
|
|
ccp_wantoptions[0].predictor_1 = 0;
|
|
ccp_allowoptions[0].predictor_1 = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setipparam(argv)
|
|
char **argv;
|
|
{
|
|
ipparam = strdup(*argv);
|
|
if (ipparam == NULL)
|
|
novm("ipparam string");
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setpapcrypt()
|
|
{
|
|
cryptpap = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setidle(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &idle_time_limit);
|
|
}
|
|
|
|
static int
|
|
setholdoff(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &holdoff);
|
|
}
|
|
|
|
static int
|
|
setpassfilter(argv)
|
|
char **argv;
|
|
{
|
|
if (bpf_compile(&pass_filter, *argv, 1) == 0)
|
|
return 1;
|
|
fprintf(stderr, "%s: error in pass-filter expression: %s\n",
|
|
progname, bpf_geterr());
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
setactivefilter(argv)
|
|
char **argv;
|
|
{
|
|
if (bpf_compile(&active_filter, *argv, 1) == 0)
|
|
return 1;
|
|
fprintf(stderr, "%s: error in active-filter expression: %s\n",
|
|
progname, bpf_geterr());
|
|
return 0;
|
|
}
|
|
|
|
#ifdef IPX_CHANGE
|
|
static int
|
|
setipxrouter (argv)
|
|
char **argv;
|
|
{
|
|
ipxcp_wantoptions[0].neg_router = 1;
|
|
ipxcp_allowoptions[0].neg_router = 1;
|
|
return int_option(*argv, &ipxcp_wantoptions[0].router);
|
|
}
|
|
|
|
static int
|
|
setipxname (argv)
|
|
char **argv;
|
|
{
|
|
char *dest = ipxcp_wantoptions[0].name;
|
|
char *src = *argv;
|
|
int count;
|
|
char ch;
|
|
|
|
ipxcp_wantoptions[0].neg_name = 1;
|
|
ipxcp_allowoptions[0].neg_name = 1;
|
|
memset (dest, '\0', sizeof (ipxcp_wantoptions[0].name));
|
|
|
|
count = 0;
|
|
while (*src) {
|
|
ch = *src++;
|
|
if (! isalnum (ch) && ch != '_') {
|
|
fprintf (stderr,
|
|
"%s: IPX router name must be alphanumeric or _\n",
|
|
progname);
|
|
return 0;
|
|
}
|
|
|
|
if (count >= sizeof (ipxcp_wantoptions[0].name)) {
|
|
fprintf (stderr,
|
|
"%s: IPX router name is limited to %d characters\n",
|
|
progname,
|
|
sizeof (ipxcp_wantoptions[0].name) - 1);
|
|
return 0;
|
|
}
|
|
|
|
dest[count++] = toupper (ch);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setipxcptimeout (argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipxcp_fsm[0].timeouttime);
|
|
}
|
|
|
|
static int
|
|
setipxcpterm (argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipxcp_fsm[0].maxtermtransmits);
|
|
}
|
|
|
|
static int
|
|
setipxcpconf (argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipxcp_fsm[0].maxconfreqtransmits);
|
|
}
|
|
|
|
static int
|
|
setipxcpfails (argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipxcp_fsm[0].maxnakloops);
|
|
}
|
|
|
|
static int
|
|
setipxnetwork(argv)
|
|
char **argv;
|
|
{
|
|
ipxcp_wantoptions[0].neg_nn = 1;
|
|
return int_option(*argv, &ipxcp_wantoptions[0].our_network);
|
|
}
|
|
|
|
static int
|
|
setipxanet()
|
|
{
|
|
ipxcp_wantoptions[0].accept_network = 1;
|
|
ipxcp_allowoptions[0].accept_network = 1;
|
|
}
|
|
|
|
static int
|
|
setipxalcl()
|
|
{
|
|
ipxcp_wantoptions[0].accept_local = 1;
|
|
ipxcp_allowoptions[0].accept_local = 1;
|
|
}
|
|
|
|
static int
|
|
setipxarmt()
|
|
{
|
|
ipxcp_wantoptions[0].accept_remote = 1;
|
|
ipxcp_allowoptions[0].accept_remote = 1;
|
|
}
|
|
|
|
static u_char *
|
|
setipxnodevalue(src,dst)
|
|
u_char *src, *dst;
|
|
{
|
|
int indx;
|
|
int item;
|
|
|
|
for (;;) {
|
|
if (!isxdigit (*src))
|
|
break;
|
|
|
|
for (indx = 0; indx < 5; ++indx) {
|
|
dst[indx] <<= 4;
|
|
dst[indx] |= (dst[indx + 1] >> 4) & 0x0F;
|
|
}
|
|
|
|
item = toupper (*src) - '0';
|
|
if (item > 9)
|
|
item -= 7;
|
|
|
|
dst[5] = (dst[5] << 4) | item;
|
|
++src;
|
|
}
|
|
return src;
|
|
}
|
|
|
|
static int
|
|
setipxnode(argv)
|
|
char **argv;
|
|
{
|
|
char *end;
|
|
|
|
memset (&ipxcp_wantoptions[0].our_node[0], 0, 6);
|
|
memset (&ipxcp_wantoptions[0].his_node[0], 0, 6);
|
|
|
|
end = setipxnodevalue (*argv, &ipxcp_wantoptions[0].our_node[0]);
|
|
if (*end == ':')
|
|
end = setipxnodevalue (++end, &ipxcp_wantoptions[0].his_node[0]);
|
|
|
|
if (*end == '\0') {
|
|
ipxcp_wantoptions[0].neg_node = 1;
|
|
return 1;
|
|
}
|
|
|
|
fprintf(stderr, "%s: invalid argument for ipx-node option\n",
|
|
progname);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
setipxproto()
|
|
{
|
|
ipx_enabled = 1; /* Enable IPXCP and IPX protocol */
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
resetipxproto()
|
|
{
|
|
ipx_enabled = 0; /* Disable IPXCP and IPX protocol */
|
|
return 1;
|
|
}
|
|
#endif /* IPX_CHANGE */
|
|
|
|
#ifdef USE_MS_DNS
|
|
/*
|
|
* setdnsaddr - set the dns address(es)
|
|
*/
|
|
|
|
static int
|
|
setdnsaddr(argv)
|
|
char **argv;
|
|
{
|
|
u_int32_t dns;
|
|
struct hostent *hp;
|
|
|
|
dns = inet_addr(*argv);
|
|
if (dns == -1) {
|
|
if ((hp = gethostbyname(*argv)) == NULL) {
|
|
fprintf(stderr, "Invalid DNS Address %s\n", *argv);
|
|
return 0;
|
|
}
|
|
dns = *(u_int32_t *)hp->h_addr;
|
|
}
|
|
|
|
if (ipcp_allowoptions[0].dnsaddr[0] == 0) {
|
|
ipcp_allowoptions[0].dnsaddr[0] = dns;
|
|
} else {
|
|
ipcp_allowoptions[0].dnsaddr[1] = dns;
|
|
}
|
|
|
|
return (1);
|
|
}
|
|
#endif /* USE_MS_DNS */
|