/*
* options.c - handles option processing for PPP.
*
* Copyright (c) 1989 Carnegie Mellon University.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by Carnegie Mellon University. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
/* static char rcsid[] = "$Id$"; */
#endif
#include <ctype.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <limits.h>
/* #include <stdlib.h> */
#include <termios.h>
#include <syslog.h>
#include <string.h>
#include <netdb.h>
#include <pwd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#ifdef PPP_FILTER
#include <pcap.h>
#include <pcap-int.h> /* XXX: To get struct pcap */
#endif
#include "pppd.h"
#include "pathnames.h"
#include "patchlevel.h"
#include "fsm.h"
#include "lcp.h"
#include "ipcp.h"
#include "upap.h"
#include "chap.h"
#include "ccp.h"
#ifdef CBCP_SUPPORT
#include "cbcp.h"
#endif
#ifdef IPX_CHANGE
#include "ipxcp.h"
#endif /* IPX_CHANGE */
#include <net/ppp-comp.h>
#define FALSE 0
#define TRUE 1
#ifndef GIDSET_TYPE
#define GIDSET_TYPE gid_t
#endif
#if 0
static int privileged_option; /* set iff the current option came from root */
static char *option_source; /* string saying where the option came from */
#endif
/*
* Option variables and default values.
*/
#ifdef PPP_FILTER
int dflag = 0; /* Tell libpcap we want debugging */
#endif
int debug = 1; /* Debug flag */
int kdebugflag = 1; /* Tell kernel to print debug messages */
int default_device = 1; /* Using /dev/tty or equivalent */
char devnam[MAXPATHLEN] = "/dev/sccppp"; /* Device name */
int crtscts = 0; /* Use hardware flow control */
int modem = 0; /* Use modem control lines */
int inspeed = B115200; /* Input/Output speed requested */
u_int32_t netmask = 0; /* IP netmask to set on interface */
int lockflag = 0; /* Create lock file to lock the serial dev */
int nodetach = 0; /* Don't detach from controlling tty */
char *connector[]={"TIMEOUT","3","ABORT","\nBUSY\r","ABORT","\nNO DIALTONE\r","ABORT","\nNO CARRIER\r","ABORT","\nNO ANSWER\r","ABORT","\nRINGING\r\n\r\nRINGING\r",
"","\rAT","OK-+++\\c-OK","ATH0","TIMEOUT","30","OK","ATDT13","CONNECT",""};
/*char *connector[]={"TIMEOUT","3","ABORT","\nBUSY\r","ABORT","\nNO DIALTONE\r","ABORT","\nNO CARRIER\r","ABORT","\nNO ANSWER\r","ABORT","\nRINGING\r\n\r\nRINGING\r",
"","\rAT","OK-+++\\c-OK","ATH0","TIMEOUT","30","OK","ATDT0202122","CONNECT","","ppp","","Username:","ppp","Password:","ppp"};
*/
char *disconnector []; /* Script to disestablish physical link */
char *welcomer []; /* Script to run after phys link estab. */
int maxconnect = 0; /* Maximum connect time */
char user[MAXNAMELEN]="stb"; /* Username for PAP */
char passwd[MAXSECRETLEN]="stb"; /* Password for PAP */
int auth_required = 0; /* Peer is required to authenticate */
int defaultroute = 1; /* assign default route through interface */
int proxyarp = 0; /* Set up proxy ARP entry for peer */
int persist = 1; /* Reopen link after it goes down */
int uselogin = 0; /* Use /etc/passwd for checking PAP */
int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
char our_name[MAXNAMELEN]="infotel"; /* Our name for authentication purposes */
char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
int explicit_remote = 0; /* User specified explicit remote name */
int usehostname = 0; /* Use hostname for our_name */
int disable_defaultip = 1; /* Don't use hostname for default IP adrs */
int demand = 0; /* do dial-on-demand */
char *ipparam = NULL; /* Extra parameter for ip up/down scripts */
int cryptpap; /* Passwords in pap-secrets are encrypted */
int idle_time_limit = 0; /* Disconnect if idle for this many seconds */
int holdoff = 30; /* # seconds to pause before reconnecting */
int refuse_pap = 0; /* Set to say we won't do PAP */
int refuse_chap = 1; /* Set to say we won't do CHAP */
#ifdef MSLANMAN
int ms_lanman = 0; /* Nonzero if use LanMan password instead of NT */
/* Has meaning only with MS-CHAP challenges */
#endif
struct option_info auth_req_info;
struct option_info connector_info;
struct option_info disconnector_info;
struct option_info welcomer_info;
struct option_info devnam_info;
#ifdef PPP_FILTER
struct bpf_program pass_filter;/* Filter program for packets to pass */
struct bpf_program active_filter; /* Filter program for link-active pkts */
pcap_t pc; /* Fake struct pcap so we can compile expr */
#endif
/*
* Prototypes
*/
#if 0
static int setdevname __P((char *, int));
static int setipaddr __P((char *));
static int setspeed __P((char *));
static int setdebug __P((char **));
static int setkdebug __P((char **));
static int setpassive __P((char **));
static int setsilent __P((char **));
static int noopt __P((char **));
static int setnovj __P((char **));
static int setnovjccomp __P((char **));
static int setvjslots __P((char **));
static int reqpap __P((char **));
static int nopap __P((char **));
#ifdef OLD_OPTIONS
static int setupapfile __P((char **));
#endif
static int nochap __P((char **));
static int reqchap __P((char **));
static int noaccomp __P((char **));
static int noasyncmap __P((char **));
static int noip __P((char **));
static int nomagicnumber __P((char **));
static int setasyncmap __P((char **));
static int setescape __P((char **));
static int setmru __P((char **));
static int setmtu __P((char **));
#ifdef CBCP_SUPPORT
static int setcbcp __P((char **));
#endif
static int nomru __P((char **));
static int nopcomp __P((char **));
static int setconnector __P((char **));
static int setdisconnector __P((char **));
static int setwelcomer __P((char **));
static int setmaxconnect __P((char **));
static int setdomain __P((char **));
static int setnetmask __P((char **));
static int setcrtscts __P((char **));
static int setnocrtscts __P((char **));
static int setxonxoff __P((char **));
static int setnodetach __P((char **));
static int setupdetach __P((char **));
static int setmodem __P((char **));
static int setlocal __P((char **));
static int setlock __P((char **));
static int setname __P((char **));
static int setuser __P((char **));
static int setremote __P((char **));
static int setauth __P((char **));
static int setnoauth __P((char **));
static int readfile __P((char **));
static int callfile __P((char **));
static int setdefaultroute __P((char **));
static int setnodefaultroute __P((char **));
static int setproxyarp __P((char **));
static int setnoproxyarp __P((char **));
static int setpersist __P((char **));
static int setnopersist __P((char **));
static int setdologin __P((char **));
static int setusehostname __P((char **));
static int setnoipdflt __P((char **));
static int setlcptimeout __P((char **));
static int setlcpterm __P((char **));
static int setlcpconf __P((char **));
static int setlcpfails __P((char **));
static int setipcptimeout __P((char **));
static int setipcpterm __P((char **));
static int setipcpconf __P((char **));
static int setipcpfails __P((char **));
static int setpaptimeout __P((char **));
static int setpapreqs __P((char **));
static int setpapreqtime __P((char **));
static int setchaptimeout __P((char **));
static int setchapchal __P((char **));
static int setchapintv __P((char **));
static int setipcpaccl __P((char **));
static int setipcpaccr __P((char **));
static int setlcpechointv __P((char **));
static int setlcpechofails __P((char **));
static int noccp __P((char **));
static int setbsdcomp __P((char **));
static int setnobsdcomp __P((char **));
static int setdeflate __P((char **));
static int setnodeflate __P((char **));
static int setnodeflatedraft __P((char **));
static int setdemand __P((char **));
static int setpred1comp __P((char **));
static int setnopred1comp __P((char **));
static int setipparam __P((char **));
static int setpapcrypt __P((char **));
static int setidle __P((char **));
static int setholdoff __P((char **));
static int setdnsaddr __P((char **));
static int resetipxproto __P((char **));
static int setwinsaddr __P((char **));
static int showversion __P((char **));
static int showhelp __P((char **));
#ifdef PPP_FILTER
static int setpdebug __P((char **));
static int setpassfilter __P((char **));
static int setactivefilter __P((char **));
#endif
#ifdef IPX_CHANGE
static int setipxproto __P((char **));
static int setipxanet __P((char **));
static int setipxalcl __P((char **));
static int setipxarmt __P((char **));
static int setipxnetwork __P((char **));
static int setipxnode __P((char **));
static int setipxrouter __P((char **));
static int setipxname __P((char **));
static int setipxcptimeout __P((char **));
static int setipxcpterm __P((char **));
static int setipxcpconf __P((char **));
static int setipxcpfails __P((char **));
#endif /* IPX_CHANGE */
#ifdef MSLANMAN
static int setmslanman __P((char **));
#endif
static int number_option __P((char *, u_int32_t *, int));
static int int_option __P((char *, int *));
static int readable __P((int fd));
#endif
/*
* Valid arguments.
*/
/*
* parse_args - parse a string of arguments from the command line.
*/
int
parse_args(argc, argv)
int argc;
char **argv;
{
return 0;
}
/*
* scan_args - scan the command line arguments to get the tty name,
* if specified.
*/
/*
* usage - print out a message telling how to use the program.
*/
void
usage()
{
}
/*
* showhelp - print out usage message and exit.
*/
static int
showhelp(argv)
char **argv;
{
return 0;
}
/*
* showversion - print out the version number and exit.
*/
static int
showversion(argv)
char **argv;
{
return 0;
}
void
option_error __V((char *fmt, ...))
{
}
/*
* 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.
*/
/*
* The following procedures parse options.
*/
/*
* readfile - take commands from a file.
*/
/*
* callfile - take commands from /etc/ppp/peers/<name>.
* Name may not contain /../, start with / or ../, or end in /..
*/
/*
* setdebug - Set debug (command line argument).
*/
/*
* noopt - Disable all options.
*/
static int
noopt(argv)
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));
#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);
}
