2171 lines
49 KiB
C
2171 lines
49 KiB
C
/* $OpenBSD: options.c,v 1.32 2024/08/10 05:32:28 jsg Exp $ */
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/*
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* options.c - handles option processing for PPP.
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*
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* Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The name "Carnegie Mellon University" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For permission or any legal
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* details, please contact
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* Office of Technology Transfer
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* Carnegie Mellon University
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* 5000 Forbes Avenue
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* Pittsburgh, PA 15213-3890
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* (412) 268-4387, fax: (412) 268-7395
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* tech-transfer@andrew.cmu.edu
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*
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* 4. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by Computing Services
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* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
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*
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* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
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* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
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* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#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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#ifdef PPP_FILTER
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#include <pcap.h>
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#include <pcap-int.h> /* XXX: To get struct pcap */
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#endif
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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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#ifdef CBCP_SUPPORT
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#include "cbcp.h"
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#endif
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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(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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#ifdef PPP_FILTER
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int dflag = 0; /* Tell libpcap we want debugging */
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#endif
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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[PATH_MAX] = "/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 modem_chat = 0; /* Use modem control lines during chat */
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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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volatile sig_atomic_t 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 explicit_remote = 0; /* User specified explicit remote name */
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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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int refuse_pap = 0; /* Set to say we won't do PAP */
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int refuse_chap = 0; /* Set to say we won't do CHAP */
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#ifdef MSLANMAN
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int ms_lanman = 0; /* Nonzero if use LanMan password instead of NT */
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/* Has meaning only with MS-CHAP challenges */
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#endif
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struct option_info auth_req_info;
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struct option_info connector_info;
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struct option_info disconnector_info;
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struct option_info welcomer_info;
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struct option_info devnam_info;
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#ifdef PPP_FILTER
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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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pcap_t pc; /* Fake struct pcap so we can compile expr */
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#endif
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/*
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* Prototypes
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*/
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static int setdevname(char *, int);
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static int setipaddr(char *);
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static int setspeed(char *);
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static int setdebug(char **);
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static int setkdebug(char **);
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static int setpassive(char **);
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static int setsilent(char **);
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static int noopt(char **);
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static int setnovj(char **);
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static int setnovjccomp(char **);
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static int setvjslots(char **);
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static int reqpap(char **);
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static int nopap(char **);
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static int nochap(char **);
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static int reqchap(char **);
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static int noaccomp(char **);
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static int noasyncmap(char **);
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static int noip(char **);
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static int nomagicnumber(char **);
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static int setasyncmap(char **);
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static int setescape(char **);
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static int setmru(char **);
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static int setmtu(char **);
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#ifdef CBCP_SUPPORT
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static int setcbcp(char **);
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#endif
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static int nomru(char **);
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static int nopcomp(char **);
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static int setconnector(char **);
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static int setdisconnector(char **);
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static int setwelcomer(char **);
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static int setmaxconnect(char **);
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static int setdomain(char **);
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static int setnetmask(char **);
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static int setcrtscts(char **);
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static int setnocrtscts(char **);
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static int setxonxoff(char **);
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static int setnodetach(char **);
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static int setupdetach(char **);
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static int setmodem(char **);
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static int setmodem_chat(char **);
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static int setlocal(char **);
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static int setlock(char **);
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static int setname(char **);
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static int setuser(char **);
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static int setremote(char **);
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static int setauth(char **);
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static int setnoauth(char **);
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static int readfile(char **);
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static int callfile(char **);
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static int setdefaultroute(char **);
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static int setnodefaultroute(char **);
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static int setproxyarp(char **);
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static int setnoproxyarp(char **);
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static int setpersist(char **);
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static int setnopersist(char **);
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static int setdologin(char **);
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static int setusehostname(char **);
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static int setnoipdflt(char **);
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static int setlcptimeout(char **);
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static int setlcpterm(char **);
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static int setlcpconf(char **);
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static int setlcpfails(char **);
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static int setipcptimeout(char **);
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static int setipcpterm(char **);
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static int setipcpconf(char **);
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static int setipcpfails(char **);
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static int setpaptimeout(char **);
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static int setpapreqs(char **);
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static int setpapreqtime(char **);
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static int setchaptimeout(char **);
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static int setchapchal(char **);
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static int setchapintv(char **);
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static int setipcpaccl(char **);
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static int setipcpaccr(char **);
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static int setlcpechointv(char **);
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static int setlcpechofails(char **);
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static int noccp(char **);
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static int setbsdcomp(char **);
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static int setnobsdcomp(char **);
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static int setdeflate(char **);
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static int setnodeflate(char **);
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static int setnodeflatedraft(char **);
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static int setdemand(char **);
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static int setpred1comp(char **);
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static int setnopred1comp(char **);
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static int setipparam(char **);
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static int setpapcrypt(char **);
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static int setidle(char **);
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static int setholdoff(char **);
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static int setdnsaddr(char **);
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static int setwinsaddr(char **);
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static int showversion(char **);
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static int showhelp(char **);
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#ifdef PPP_FILTER
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static int setpdebug(char **);
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static int setpassfilter(char **);
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static int setactivefilter(char **);
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#endif
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#ifdef MSLANMAN
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static int setmslanman(char **);
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#endif
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static int number_option(char *, u_int32_t *, int);
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static int int_option(char *, int *);
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static int readable(int fd);
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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)(char **);
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} cmds[] = {
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{"-all", 0, noopt}, /* Don't request/allow any options (useless) */
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{"noaccomp", 0, noaccomp}, /* Disable Address/Control compression */
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{"-ac", 0, noaccomp}, /* Disable Address/Control compress */
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{"default-asyncmap", 0, noasyncmap}, /* Disable asyncmap negotiation */
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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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{"nodetach", 0, setnodetach}, /* Don't detach from controlling tty */
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{"-detach", 0, setnodetach}, /* don't fork */
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{"updetach", 0, setupdetach}, /* Detach once an NP has come up */
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{"noip", 0, noip}, /* Disable IP and IPCP */
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{"-ip", 0, noip}, /* Disable IP and IPCP */
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{"nomagic", 0, nomagicnumber}, /* Disable magic number negotiation */
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{"-mn", 0, nomagicnumber}, /* Disable magic number negotiation */
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{"default-mru", 0, nomru}, /* Disable MRU 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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{"nopcomp", 0, nopcomp}, /* Disable protocol field compression */
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{"-pc", 0, nopcomp}, /* Disable protocol field compress */
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{"require-pap", 0, reqpap}, /* Require PAP authentication from peer */
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{"+pap", 0, reqpap}, /* Require PAP auth from peer */
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{"refuse-pap", 0, nopap}, /* Don't agree to auth to peer with PAP */
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{"-pap", 0, nopap}, /* Don't allow UPAP authentication with peer */
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{"require-chap", 0, reqchap}, /* Require CHAP authentication from peer */
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{"+chap", 0, reqchap}, /* Require CHAP authentication from peer */
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{"refuse-chap", 0, nochap}, /* Don't agree to auth to peer with CHAP */
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{"-chap", 0, nochap}, /* Don't allow CHAP authentication with peer */
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{"novj", 0, setnovj}, /* Disable VJ compression */
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{"-vj", 0, setnovj}, /* disable VJ compression */
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{"novjccomp", 0, setnovjccomp}, /* disable VJ connection-ID 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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{"nocrtscts", 0, setnocrtscts}, /* clear 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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#ifdef CBCP_SUPPORT
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{"callback", 1, setcbcp}, /* Ask for callback */
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#endif
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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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{"modem_chat", 0, setmodem_chat}, /* Use modem control lines during chat */
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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 name for 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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{"noauth", 0, setnoauth}, /* Don't require peer to authenticate */
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{"file", 1, readfile}, /* Take options from a file */
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{"call", 1, callfile}, /* Take options from a privileged file */
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{"defaultroute", 0, setdefaultroute}, /* Add default route */
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{"nodefaultroute", 0, setnodefaultroute}, /* disable defaultroute option */
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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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{"noproxyarp", 0, setnoproxyarp}, /* disable proxyarp option */
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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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{"nopersist", 0, setnopersist}, /* Turn off persist option */
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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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{"noccp", 0, noccp}, /* Disable CCP negotiation */
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{"-ccp", 0, noccp}, /* Disable CCP negotiation */
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{"bsdcomp", 1, setbsdcomp}, /* request BSD-Compress */
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{"nobsdcomp", 0, setnobsdcomp}, /* don't allow 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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{"nodeflate", 0, setnodeflate}, /* don't allow Deflate compression */
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{"-deflate", 0, setnodeflate}, /* don't allow Deflate compression */
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{"nodeflatedraft", 0, setnodeflatedraft}, /* don't use draft deflate # */
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{"predictor1", 0, setpred1comp}, /* request Predictor-1 */
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{"nopredictor1", 0, setnopred1comp},/* don't allow 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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{"ms-dns", 1, setdnsaddr}, /* DNS address for the peer's use */
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{"ms-wins", 1, setwinsaddr}, /* Nameserver for SMB over TCP/IP for peer */
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{"--version", 0, showversion}, /* Show version number */
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{"--help", 0, showhelp}, /* Show brief listing of options */
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{"-h", 0, showhelp}, /* ditto */
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#ifdef PPP_FILTER
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{"pdebug", 1, setpdebug}, /* libpcap debugging */
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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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#endif
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#ifdef MSLANMAN
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{"ms-lanman", 0, setmslanman}, /* Use LanMan psswd when using MS-CHAP */
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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 const char usage_string[] = "\
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pppd version %s patch level %d%s\n\
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Usage: %s [ options ], where options 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\
|
|
auth Require authentication from peer\n\
|
|
connect <p> Invoke shell command <p> to set up the serial line\n\
|
|
crtscts Use hardware RTS/CTS flow control\n\
|
|
defaultroute Add default route through interface\n\
|
|
file <f> Take options from file <f>\n\
|
|
modem Use modem control lines\n\
|
|
modem_chat Use modem control lines during chat\n\
|
|
mru <n> Set MRU value to <n> for negotiation\n\
|
|
netmask <n> Set interface netmask to <n>\n\
|
|
See pppd(8) for more options.\n\
|
|
";
|
|
|
|
static char *current_option; /* the name of the option being parsed */
|
|
static int privileged_option; /* set iff the current option came from root */
|
|
static char *option_source; /* string saying where the option came from */
|
|
|
|
/*
|
|
* parse_args - parse a string of arguments from the command line.
|
|
*/
|
|
int
|
|
parse_args(int argc, char **argv)
|
|
{
|
|
char *arg;
|
|
struct cmd *cmdp;
|
|
int ret;
|
|
|
|
privileged_option = privileged;
|
|
option_source = "command line";
|
|
while (argc > 0) {
|
|
arg = *argv++;
|
|
--argc;
|
|
|
|
/*
|
|
* First see if it's a command.
|
|
*/
|
|
for (cmdp = cmds; cmdp->cmd_name; cmdp++)
|
|
if (!strcmp(arg, cmdp->cmd_name))
|
|
break;
|
|
|
|
if (cmdp->cmd_name != NULL) {
|
|
if (argc < cmdp->num_args) {
|
|
option_error("too few parameters for option %s", arg);
|
|
return 0;
|
|
}
|
|
current_option = arg;
|
|
if (!(*cmdp->cmd_func)(argv))
|
|
return 0;
|
|
argc -= cmdp->num_args;
|
|
argv += cmdp->num_args;
|
|
|
|
} else {
|
|
/*
|
|
* Maybe a tty name, speed or IP address?
|
|
*/
|
|
if ((ret = setdevname(arg, 0)) == 0
|
|
&& (ret = setspeed(arg)) == 0
|
|
&& (ret = setipaddr(arg)) == 0) {
|
|
option_error("unrecognized option '%s'", arg);
|
|
usage();
|
|
return 0;
|
|
}
|
|
if (ret < 0) /* error */
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* scan_args - scan the command line arguments to get the tty name,
|
|
* if specified.
|
|
*/
|
|
void
|
|
scan_args(int argc, char **argv)
|
|
{
|
|
char *arg;
|
|
struct cmd *cmdp;
|
|
|
|
while (argc > 0) {
|
|
arg = *argv++;
|
|
--argc;
|
|
|
|
/* Skip options and their arguments */
|
|
for (cmdp = cmds; cmdp->cmd_name; cmdp++)
|
|
if (!strcmp(arg, cmdp->cmd_name))
|
|
break;
|
|
|
|
if (cmdp->cmd_name != NULL) {
|
|
argc -= cmdp->num_args;
|
|
argv += cmdp->num_args;
|
|
continue;
|
|
}
|
|
|
|
/* Check if it's a tty name and copy it if so */
|
|
(void) setdevname(arg, 1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* usage - print out a message telling how to use the program.
|
|
*/
|
|
void
|
|
usage(void)
|
|
{
|
|
if (phase == PHASE_INITIALIZE)
|
|
fprintf(stderr, usage_string, VERSION, PATCHLEVEL, IMPLEMENTATION,
|
|
__progname);
|
|
}
|
|
|
|
/*
|
|
* showhelp - print out usage message and exit.
|
|
*/
|
|
static int
|
|
showhelp(char **argv)
|
|
{
|
|
if (phase == PHASE_INITIALIZE) {
|
|
usage();
|
|
exit(0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* showversion - print out the version number and exit.
|
|
*/
|
|
static int
|
|
showversion(char **argv)
|
|
{
|
|
if (phase == PHASE_INITIALIZE) {
|
|
fprintf(stderr, "pppd version %s patch level %d%s\n",
|
|
VERSION, PATCHLEVEL, IMPLEMENTATION);
|
|
exit(0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* options_from_file - Read a string of options from a file,
|
|
* and interpret them.
|
|
*/
|
|
int
|
|
options_from_file(char *filename, int must_exist, int check_prot, int priv)
|
|
{
|
|
FILE *f;
|
|
int i, newline, ret;
|
|
struct cmd *cmdp;
|
|
int oldpriv;
|
|
char *argv[MAXARGS];
|
|
char args[MAXARGS][MAXWORDLEN];
|
|
char cmd[MAXWORDLEN];
|
|
|
|
if ((f = fopen(filename, "r")) == NULL) {
|
|
if (!must_exist && errno == ENOENT)
|
|
return 1;
|
|
option_error("Can't open options file %s: %m", filename);
|
|
return 0;
|
|
}
|
|
if (check_prot && !readable(fileno(f))) {
|
|
option_error("Can't open options file %s: access denied", filename);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
|
|
oldpriv = privileged_option;
|
|
privileged_option = priv;
|
|
ret = 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)) {
|
|
option_error(
|
|
"In file %s: too few parameters for option '%s'",
|
|
filename, cmd);
|
|
goto err;
|
|
}
|
|
argv[i] = args[i];
|
|
}
|
|
current_option = cmd;
|
|
if (!(*cmdp->cmd_func)(argv))
|
|
goto err;
|
|
|
|
} else {
|
|
/*
|
|
* Maybe a tty name, speed or IP address?
|
|
*/
|
|
if ((i = setdevname(cmd, 0)) == 0
|
|
&& (i = setspeed(cmd)) == 0
|
|
&& (i = setipaddr(cmd)) == 0) {
|
|
option_error("In file %s: unrecognized option '%s'",
|
|
filename, cmd);
|
|
goto err;
|
|
}
|
|
if (i < 0) /* error */
|
|
goto err;
|
|
}
|
|
}
|
|
ret = 1;
|
|
|
|
err:
|
|
fclose(f);
|
|
privileged_option = oldpriv;
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* options_from_user - See if the use has a ~/.ppprc file,
|
|
* and if so, interpret options from it.
|
|
*/
|
|
int
|
|
options_from_user(void)
|
|
{
|
|
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;
|
|
if (asprintf(&path, "%s/%s", user, file) == -1)
|
|
novm("init file name");
|
|
ret = options_from_file(path, 0, 1, privileged);
|
|
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(void)
|
|
{
|
|
char *dev, *path;
|
|
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 */
|
|
if (asprintf(&path, "%s%s", _PATH_TTYOPT, dev) == -1)
|
|
novm("tty init file name");
|
|
ret = options_from_file(path, 0, 0, 1);
|
|
free(path);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* option_error - print a message about an error in an option.
|
|
* The message is logged, and also sent to
|
|
* stderr if phase == PHASE_INITIALIZE.
|
|
*/
|
|
void
|
|
option_error(char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
char buf[256];
|
|
|
|
va_start(args, fmt);
|
|
vfmtmsg(buf, sizeof(buf), fmt, args);
|
|
va_end(args);
|
|
if (phase == PHASE_INITIALIZE)
|
|
fprintf(stderr, "%s: %s\n", __progname, buf);
|
|
syslog(LOG_ERR, "%s", buf);
|
|
}
|
|
|
|
/*
|
|
* readable - check if a file is readable by the real user.
|
|
*/
|
|
static int
|
|
readable(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(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) {
|
|
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) {
|
|
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;
|
|
option_error("Error reading %s: %m", 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) {
|
|
option_error("warning: word in file %s too long (%.20s...)",
|
|
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(char *str, u_int32_t *valp, int base)
|
|
{
|
|
char *ptr;
|
|
|
|
*valp = strtoul(str, &ptr, base);
|
|
if (ptr == str) {
|
|
option_error("invalid numeric parameter '%s' for %s option",
|
|
str, current_option);
|
|
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(char *str, int *valp)
|
|
{
|
|
u_int32_t v;
|
|
|
|
if (!number_option(str, &v, 0))
|
|
return 0;
|
|
*valp = (int) v;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* The following procedures parse options.
|
|
*/
|
|
|
|
/*
|
|
* readfile - take commands from a file.
|
|
*/
|
|
static int
|
|
readfile(char **argv)
|
|
{
|
|
return options_from_file(*argv, 1, 1, privileged_option);
|
|
}
|
|
|
|
/*
|
|
* callfile - take commands from /etc/ppp/peers/<name>.
|
|
* Name may not contain /../, start with / or ../, or end in /..
|
|
*/
|
|
static int
|
|
callfile(char **argv)
|
|
{
|
|
char *fname, *arg, *p;
|
|
int l, ok;
|
|
|
|
arg = *argv;
|
|
ok = 1;
|
|
if (arg[0] == '/' || arg[0] == 0)
|
|
ok = 0;
|
|
else {
|
|
for (p = arg; *p != 0; ) {
|
|
if (p[0] == '.' && p[1] == '.' && (p[2] == '/' || p[2] == 0)) {
|
|
ok = 0;
|
|
break;
|
|
}
|
|
while (*p != '/' && *p != 0)
|
|
++p;
|
|
if (*p == '/')
|
|
++p;
|
|
}
|
|
}
|
|
if (!ok) {
|
|
option_error("call option value may not contain .. or start with /");
|
|
return 0;
|
|
}
|
|
|
|
l = strlen(arg) + strlen(_PATH_PEERFILES) + 1;
|
|
if ((fname = (char *) malloc(l)) == NULL)
|
|
novm("call file name");
|
|
strlcpy(fname, _PATH_PEERFILES, l);
|
|
strlcat(fname, arg, l);
|
|
|
|
ok = options_from_file(fname, 1, 1, 1);
|
|
|
|
free(fname);
|
|
return ok;
|
|
}
|
|
|
|
|
|
/*
|
|
* setdebug - Set debug (command line argument).
|
|
*/
|
|
static int
|
|
setdebug(char **argv)
|
|
{
|
|
debug++;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setkdebug - Set kernel debugging level.
|
|
*/
|
|
static int
|
|
setkdebug(char **argv)
|
|
{
|
|
return int_option(*argv, &kdebugflag);
|
|
}
|
|
|
|
#ifdef PPP_FILTER
|
|
/*
|
|
* setpdebug - Set libpcap debugging level.
|
|
*/
|
|
static int
|
|
setpdebug(char **argv)
|
|
{
|
|
return int_option(*argv, &dflag);
|
|
}
|
|
|
|
/*
|
|
* setpassfilter - Set the pass filter for packets
|
|
*/
|
|
static int
|
|
setpassfilter(char **argv)
|
|
{
|
|
pc.linktype = DLT_PPP;
|
|
pc.snapshot = PPP_HDRLEN;
|
|
|
|
if (pcap_compile(&pc, &pass_filter, *argv, 1, netmask) == 0)
|
|
return 1;
|
|
option_error("error in pass-filter expression: %s\n", pcap_geterr(&pc));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* setactivefilter - Set the active filter for packets
|
|
*/
|
|
static int
|
|
setactivefilter(char **argv)
|
|
{
|
|
pc.linktype = DLT_PPP;
|
|
pc.snapshot = PPP_HDRLEN;
|
|
|
|
if (pcap_compile(&pc, &active_filter, *argv, 1, netmask) == 0)
|
|
return 1;
|
|
option_error("error in active-filter expression: %s\n", pcap_geterr(&pc));
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* noopt - Disable all options.
|
|
*/
|
|
static int
|
|
noopt(char **argv)
|
|
{
|
|
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(char **argv)
|
|
{
|
|
lcp_wantoptions[0].neg_accompression = 0;
|
|
lcp_allowoptions[0].neg_accompression = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* noasyncmap - Disable async map negotiation.
|
|
*/
|
|
static int
|
|
noasyncmap(char **argv)
|
|
{
|
|
lcp_wantoptions[0].neg_asyncmap = 0;
|
|
lcp_allowoptions[0].neg_asyncmap = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* noip - Disable IP and IPCP.
|
|
*/
|
|
static int
|
|
noip(char **argv)
|
|
{
|
|
ipcp_protent.enabled_flag = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nomagicnumber - Disable magic number negotiation.
|
|
*/
|
|
static int
|
|
nomagicnumber(char **argv)
|
|
{
|
|
lcp_wantoptions[0].neg_magicnumber = 0;
|
|
lcp_allowoptions[0].neg_magicnumber = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nomru - Disable mru negotiation.
|
|
*/
|
|
static int
|
|
nomru(char **argv)
|
|
{
|
|
lcp_wantoptions[0].neg_mru = 0;
|
|
lcp_allowoptions[0].neg_mru = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setmru - Set MRU for negotiation.
|
|
*/
|
|
static int
|
|
setmru(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(char **argv)
|
|
{
|
|
u_int32_t mtu;
|
|
|
|
if (!number_option(*argv, &mtu, 0))
|
|
return 0;
|
|
if (mtu < MINMRU || mtu > MAXMRU) {
|
|
option_error("mtu option value of %u is too %s", mtu,
|
|
(mtu < MINMRU? "small": "large"));
|
|
return 0;
|
|
}
|
|
lcp_allowoptions[0].mru = mtu;
|
|
return (1);
|
|
}
|
|
|
|
#ifdef CBCP_SUPPORT
|
|
static int
|
|
setcbcp(argv)
|
|
char **argv;
|
|
{
|
|
lcp_wantoptions[0].neg_cbcp = 1;
|
|
cbcp_protent.enabled_flag = 1;
|
|
cbcp[0].us_number = strdup(*argv);
|
|
if (cbcp[0].us_number == 0)
|
|
novm("callback number");
|
|
cbcp[0].us_type |= (1 << CB_CONF_USER);
|
|
cbcp[0].us_type |= (1 << CB_CONF_ADMIN);
|
|
return (1);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* nopcomp - Disable Protocol field compression negotiation.
|
|
*/
|
|
static int
|
|
nopcomp(char **argv)
|
|
{
|
|
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(char **argv)
|
|
{
|
|
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(char **argv)
|
|
{
|
|
lcp_wantoptions[0].silent = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* nopap - Disable PAP authentication with peer.
|
|
*/
|
|
static int
|
|
nopap(char **argv)
|
|
{
|
|
refuse_pap = 1;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* reqpap - Require PAP authentication from peer.
|
|
*/
|
|
static int
|
|
reqpap(char **argv)
|
|
{
|
|
lcp_wantoptions[0].neg_upap = 1;
|
|
setauth(NULL);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* nochap - Disable CHAP authentication with peer.
|
|
*/
|
|
static int
|
|
nochap(char **argv)
|
|
{
|
|
refuse_chap = 1;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* reqchap - Require CHAP authentication from peer.
|
|
*/
|
|
static int
|
|
reqchap(char **argv)
|
|
{
|
|
lcp_wantoptions[0].neg_chap = 1;
|
|
setauth(NULL);
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setnovj - disable vj compression
|
|
*/
|
|
static int
|
|
setnovj(char **argv)
|
|
{
|
|
ipcp_wantoptions[0].neg_vj = 0;
|
|
ipcp_allowoptions[0].neg_vj = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setnovjccomp - disable VJ connection-ID compression
|
|
*/
|
|
static int
|
|
setnovjccomp(char **argv)
|
|
{
|
|
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(char **argv)
|
|
{
|
|
int value;
|
|
|
|
if (!int_option(*argv, &value))
|
|
return 0;
|
|
if (value < 2 || value > 16) {
|
|
option_error("vj-max-slots value must be between 2 and 16");
|
|
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(char **argv)
|
|
{
|
|
connector = strdup(*argv);
|
|
if (connector == NULL)
|
|
novm("connect script");
|
|
connector_info.priv = privileged_option;
|
|
connector_info.source = option_source;
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setdisconnector - Set a program to disconnect from the serial line
|
|
*/
|
|
static int
|
|
setdisconnector(char **argv)
|
|
{
|
|
disconnector = strdup(*argv);
|
|
if (disconnector == NULL)
|
|
novm("disconnect script");
|
|
disconnector_info.priv = privileged_option;
|
|
disconnector_info.source = option_source;
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setwelcomer - Set a program to welcome a client after connection
|
|
*/
|
|
static int
|
|
setwelcomer(char **argv)
|
|
{
|
|
welcomer = strdup(*argv);
|
|
if (welcomer == NULL)
|
|
novm("welcome script");
|
|
welcomer_info.priv = privileged_option;
|
|
welcomer_info.source = option_source;
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setmaxconnect - Set the maximum connect time
|
|
*/
|
|
static int
|
|
setmaxconnect(char **argv)
|
|
{
|
|
int value;
|
|
|
|
if (!int_option(*argv, &value))
|
|
return 0;
|
|
if (value < 0) {
|
|
option_error("maxconnect time must be positive");
|
|
return 0;
|
|
}
|
|
if (maxconnect > 0 && (value == 0 || value > maxconnect)) {
|
|
option_error("maxconnect time cannot be increased");
|
|
return 0;
|
|
}
|
|
maxconnect = value;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* setdomain - Set domain name to append to hostname
|
|
*/
|
|
static int
|
|
setdomain(char **argv)
|
|
{
|
|
if (!privileged_option) {
|
|
option_error("using the domain option requires root privilege");
|
|
return 0;
|
|
}
|
|
gethostname(hostname, MAXNAMELEN);
|
|
if (**argv != 0) {
|
|
if (**argv != '.')
|
|
strlcat(hostname, ".", MAXNAMELEN);
|
|
strlcat(hostname, *argv, MAXNAMELEN);
|
|
}
|
|
hostname[MAXNAMELEN-1] = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setasyncmap - add bits to asyncmap (what we request peer to escape).
|
|
*/
|
|
static int
|
|
setasyncmap(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(char **argv)
|
|
{
|
|
int n, ret;
|
|
char *p, *endp;
|
|
|
|
p = *argv;
|
|
ret = 1;
|
|
while (*p) {
|
|
n = strtol(p, &endp, 16);
|
|
if (p == endp) {
|
|
option_error("escape parameter contains invalid hex number '%s'",
|
|
p);
|
|
return 0;
|
|
}
|
|
p = endp;
|
|
if (n < 0 || (0x20 <= n && n <= 0x3F) || n == 0x5E || n > 0xFF) {
|
|
option_error("can't escape character 0x%x", 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(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(char *cp, int quiet)
|
|
{
|
|
struct stat statbuf;
|
|
char dev[PATH_MAX];
|
|
|
|
if (*cp == 0)
|
|
return 0;
|
|
|
|
if (strncmp("/dev/", cp, 5) != 0) {
|
|
strlcpy(dev, "/dev/", sizeof dev);
|
|
strlcat(dev, cp, sizeof dev);
|
|
cp = dev;
|
|
}
|
|
|
|
/*
|
|
* Check if there is a device by this name.
|
|
*/
|
|
if (stat(cp, &statbuf) < 0) {
|
|
if (errno == ENOENT || quiet)
|
|
return 0;
|
|
option_error("Couldn't stat %s: %m", cp);
|
|
return -1;
|
|
}
|
|
|
|
(void) strlcpy(devnam, cp, PATH_MAX);
|
|
default_device = FALSE;
|
|
devnam_info.priv = privileged_option;
|
|
devnam_info.source = option_source;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipaddr - Set the IP address
|
|
*/
|
|
static int
|
|
setipaddr(char *arg)
|
|
{
|
|
struct hostent *hp;
|
|
char *colon;
|
|
struct in_addr ina;
|
|
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 (inet_aton(arg, &ina) == 0) {
|
|
if ((hp = gethostbyname(arg)) == NULL) {
|
|
option_error("unknown host: %s", arg);
|
|
return -1;
|
|
} else {
|
|
local = *(u_int32_t *)hp->h_addr;
|
|
if (our_name[0] == 0)
|
|
strlcpy(our_name, arg, MAXNAMELEN);
|
|
}
|
|
} else
|
|
local = ina.s_addr;
|
|
if (bad_ip_adrs(local)) {
|
|
option_error("bad local IP address %s", ip_ntoa(local));
|
|
return -1;
|
|
}
|
|
if (local != 0)
|
|
wo->ouraddr = local;
|
|
*colon = ':';
|
|
}
|
|
|
|
/*
|
|
* If colon last character, then no remote addr.
|
|
*/
|
|
if (*++colon != '\0') {
|
|
if (inet_aton(colon, &ina) == 0) {
|
|
if ((hp = gethostbyname(colon)) == NULL) {
|
|
option_error("unknown host: %s", colon);
|
|
return -1;
|
|
} else {
|
|
remote = *(u_int32_t *)hp->h_addr;
|
|
if (remote_name[0] == 0)
|
|
strlcpy(remote_name, colon, MAXNAMELEN);
|
|
}
|
|
} else
|
|
remote = ina.s_addr;
|
|
if (bad_ip_adrs(remote)) {
|
|
option_error("bad remote IP address %s", ip_ntoa(remote));
|
|
return -1;
|
|
}
|
|
if (remote != 0)
|
|
wo->hisaddr = remote;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setnoipdflt - disable setipdefault()
|
|
*/
|
|
static int
|
|
setnoipdflt(char **argv)
|
|
{
|
|
disable_defaultip = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipcpaccl - accept peer's idea of our address
|
|
*/
|
|
static int
|
|
setipcpaccl(char **argv)
|
|
{
|
|
ipcp_wantoptions[0].accept_local = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipcpaccr - accept peer's idea of its address
|
|
*/
|
|
static int
|
|
setipcpaccr(char **argv)
|
|
{
|
|
ipcp_wantoptions[0].accept_remote = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setnetmask - set the netmask to be used on the interface.
|
|
*/
|
|
static int
|
|
setnetmask(char **argv)
|
|
{
|
|
struct in_addr ina;
|
|
|
|
if (inet_aton(*argv, &ina) == 0 || (netmask & ~ina.s_addr) != 0) {
|
|
option_error("invalid netmask value '%s'", *argv);
|
|
return (0);
|
|
}
|
|
|
|
netmask = ina.s_addr;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setcrtscts(char **argv)
|
|
{
|
|
crtscts = 1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setnocrtscts(char **argv)
|
|
{
|
|
crtscts = -1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setxonxoff(char **argv)
|
|
{
|
|
lcp_wantoptions[0].asyncmap |= 0x000A0000; /* escape ^S and ^Q */
|
|
lcp_wantoptions[0].neg_asyncmap = 1;
|
|
|
|
crtscts = -2;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setnodetach(char **argv)
|
|
{
|
|
nodetach = 1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setupdetach(char **argv)
|
|
{
|
|
nodetach = -1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setdemand(char **argv)
|
|
{
|
|
demand = 1;
|
|
persist = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setmodem(char **argv)
|
|
{
|
|
modem = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setmodem_chat(char **argv)
|
|
{
|
|
modem_chat = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setlocal(char **argv)
|
|
{
|
|
modem = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setlock(char **argv)
|
|
{
|
|
lockflag = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setusehostname(char **argv)
|
|
{
|
|
usehostname = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setname(char **argv)
|
|
{
|
|
if (!privileged_option) {
|
|
option_error("using the name option requires root privilege");
|
|
return 0;
|
|
}
|
|
strlcpy(our_name, argv[0], MAXNAMELEN);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setuser(char **argv)
|
|
{
|
|
strlcpy(user, argv[0], MAXNAMELEN);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setremote(char **argv)
|
|
{
|
|
strlcpy(remote_name, argv[0], MAXNAMELEN);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setauth(char **argv)
|
|
{
|
|
auth_required = 1;
|
|
if (privileged_option > auth_req_info.priv) {
|
|
auth_req_info.priv = privileged_option;
|
|
auth_req_info.source = option_source;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnoauth(char **argv)
|
|
{
|
|
if (auth_required && privileged_option < auth_req_info.priv) {
|
|
if (auth_req_info.source == NULL)
|
|
option_error("cannot override default auth option");
|
|
else
|
|
option_error("cannot override auth option set by %s",
|
|
auth_req_info.source);
|
|
return 0;
|
|
}
|
|
auth_required = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setdefaultroute(char **argv)
|
|
{
|
|
if (!ipcp_allowoptions[0].default_route) {
|
|
option_error("defaultroute option is disabled");
|
|
return 0;
|
|
}
|
|
ipcp_wantoptions[0].default_route = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnodefaultroute(char **argv)
|
|
{
|
|
ipcp_allowoptions[0].default_route = 0;
|
|
ipcp_wantoptions[0].default_route = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setproxyarp(char **argv)
|
|
{
|
|
if (!ipcp_allowoptions[0].proxy_arp) {
|
|
option_error("proxyarp option is disabled");
|
|
return 0;
|
|
}
|
|
ipcp_wantoptions[0].proxy_arp = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnoproxyarp(char **argv)
|
|
{
|
|
ipcp_wantoptions[0].proxy_arp = 0;
|
|
ipcp_allowoptions[0].proxy_arp = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setpersist(char **argv)
|
|
{
|
|
persist = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnopersist(char **argv)
|
|
{
|
|
persist = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setdologin(char **argv)
|
|
{
|
|
uselogin = 1;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Functions to set the echo interval for modem-less monitors
|
|
*/
|
|
|
|
static int
|
|
setlcpechointv(char **argv)
|
|
{
|
|
return int_option(*argv, &lcp_echo_interval);
|
|
}
|
|
|
|
static int
|
|
setlcpechofails(char **argv)
|
|
{
|
|
return int_option(*argv, &lcp_echo_fails);
|
|
}
|
|
|
|
/*
|
|
* Functions to set timeouts, max transmits, etc.
|
|
*/
|
|
static int
|
|
setlcptimeout(char **argv)
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].timeouttime);
|
|
}
|
|
|
|
static int
|
|
setlcpterm(char **argv)
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxtermtransmits);
|
|
}
|
|
|
|
static int
|
|
setlcpconf(char **argv)
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxconfreqtransmits);
|
|
}
|
|
|
|
static int
|
|
setlcpfails(char **argv)
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxnakloops);
|
|
}
|
|
|
|
static int
|
|
setipcptimeout(char **argv)
|
|
{
|
|
return int_option(*argv, &ipcp_fsm[0].timeouttime);
|
|
}
|
|
|
|
static int
|
|
setipcpterm(char **argv)
|
|
{
|
|
return int_option(*argv, &ipcp_fsm[0].maxtermtransmits);
|
|
}
|
|
|
|
static int
|
|
setipcpconf(char **argv)
|
|
{
|
|
return int_option(*argv, &ipcp_fsm[0].maxconfreqtransmits);
|
|
}
|
|
|
|
static int
|
|
setipcpfails(char **argv)
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxnakloops);
|
|
}
|
|
|
|
static int
|
|
setpaptimeout(char **argv)
|
|
{
|
|
return int_option(*argv, &upap[0].us_timeouttime);
|
|
}
|
|
|
|
static int
|
|
setpapreqtime(char **argv)
|
|
{
|
|
return int_option(*argv, &upap[0].us_reqtimeout);
|
|
}
|
|
|
|
static int
|
|
setpapreqs(char **argv)
|
|
{
|
|
return int_option(*argv, &upap[0].us_maxtransmits);
|
|
}
|
|
|
|
static int
|
|
setchaptimeout(char **argv)
|
|
{
|
|
return int_option(*argv, &chap[0].timeouttime);
|
|
}
|
|
|
|
static int
|
|
setchapchal(char **argv)
|
|
{
|
|
return int_option(*argv, &chap[0].max_transmits);
|
|
}
|
|
|
|
static int
|
|
setchapintv(char **argv)
|
|
{
|
|
return int_option(*argv, &chap[0].chal_interval);
|
|
}
|
|
|
|
static int
|
|
noccp(char **argv)
|
|
{
|
|
ccp_protent.enabled_flag = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setbsdcomp(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) {
|
|
option_error("invalid parameter '%s' for bsdcomp option", *argv);
|
|
return 0;
|
|
}
|
|
if ((rbits != 0 && (rbits < BSD_MIN_BITS || rbits > BSD_MAX_BITS))
|
|
|| (abits != 0 && (abits < BSD_MIN_BITS || abits > BSD_MAX_BITS))) {
|
|
option_error("bsdcomp option values must be 0 or %d .. %d",
|
|
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(char **argv)
|
|
{
|
|
ccp_wantoptions[0].bsd_compress = 0;
|
|
ccp_allowoptions[0].bsd_compress = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setdeflate(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) {
|
|
option_error("invalid parameter '%s' for deflate option", *argv);
|
|
return 0;
|
|
}
|
|
if ((rbits != 0 && (rbits < DEFLATE_MIN_SIZE || rbits > DEFLATE_MAX_SIZE))
|
|
|| (abits != 0 && (abits < DEFLATE_MIN_SIZE
|
|
|| abits > DEFLATE_MAX_SIZE))) {
|
|
option_error("deflate option values must be 0 or %d .. %d",
|
|
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(char **argv)
|
|
{
|
|
ccp_wantoptions[0].deflate = 0;
|
|
ccp_allowoptions[0].deflate = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnodeflatedraft(char **argv)
|
|
{
|
|
ccp_wantoptions[0].deflate_draft = 0;
|
|
ccp_allowoptions[0].deflate_draft = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setpred1comp(char **argv)
|
|
{
|
|
ccp_wantoptions[0].predictor_1 = 1;
|
|
ccp_allowoptions[0].predictor_1 = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setnopred1comp(char **argv)
|
|
{
|
|
ccp_wantoptions[0].predictor_1 = 0;
|
|
ccp_allowoptions[0].predictor_1 = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setipparam(char **argv)
|
|
{
|
|
ipparam = strdup(*argv);
|
|
if (ipparam == NULL)
|
|
novm("ipparam string");
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setpapcrypt(char **argv)
|
|
{
|
|
cryptpap = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setidle(char **argv)
|
|
{
|
|
return int_option(*argv, &idle_time_limit);
|
|
}
|
|
|
|
static int
|
|
setholdoff(char **argv)
|
|
{
|
|
return int_option(*argv, &holdoff);
|
|
}
|
|
|
|
/*
|
|
* setdnsaddr - set the dns address(es)
|
|
*/
|
|
static int
|
|
setdnsaddr(char **argv)
|
|
{
|
|
struct in_addr ina;
|
|
struct hostent *hp;
|
|
|
|
if (inet_aton(*argv, &ina) == 0) {
|
|
if ((hp = gethostbyname(*argv)) == NULL) {
|
|
option_error("invalid address parameter '%s' for ms-dns option",
|
|
*argv);
|
|
return (0);
|
|
}
|
|
ina.s_addr = *(u_int32_t *)hp->h_addr;
|
|
}
|
|
|
|
/* if there is no primary then update it. */
|
|
if (ipcp_allowoptions[0].dnsaddr[0] == 0)
|
|
ipcp_allowoptions[0].dnsaddr[0] = ina.s_addr;
|
|
|
|
/* always set the secondary address value to the same value. */
|
|
ipcp_allowoptions[0].dnsaddr[1] = ina.s_addr;
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setwinsaddr - set the wins address(es)
|
|
* This is primrarly used with the Samba package under UNIX or for pointing
|
|
* the caller to the existing WINS server on a Windows NT platform.
|
|
*/
|
|
static int
|
|
setwinsaddr(char **argv)
|
|
{
|
|
struct in_addr ina;
|
|
struct hostent *hp;
|
|
|
|
if (inet_aton(*argv, &ina) == 0) {
|
|
if ((hp = gethostbyname(*argv)) == NULL) {
|
|
option_error("invalid address parameter '%s' for ms-wins option",
|
|
*argv);
|
|
return (0);
|
|
}
|
|
ina.s_addr = *(u_int32_t *)hp->h_addr;
|
|
}
|
|
|
|
/* if there is no primary then update it. */
|
|
if (ipcp_allowoptions[0].winsaddr[0] == 0)
|
|
ipcp_allowoptions[0].winsaddr[0] = ina.s_addr;
|
|
|
|
/* always set the secondary address value to the same value. */
|
|
ipcp_allowoptions[0].winsaddr[1] = ina.s_addr;
|
|
|
|
return (1);
|
|
}
|
|
|
|
#ifdef MSLANMAN
|
|
static int
|
|
setmslanman(char **argv)
|
|
{
|
|
ms_lanman = 1;
|
|
return (1);
|
|
}
|
|
#endif
|