mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-05 09:14:03 +00:00
1455 lines
30 KiB
C
1455 lines
30 KiB
C
/*
|
|
* 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: options.c,v 1.3 1995/05/24 01:56:52 davidg Exp $";
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#define devname STDLIB_devname
|
|
#include <stdlib.h>
|
|
#undef devname
|
|
#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 "ppp.h"
|
|
#include "pppd.h"
|
|
#include "pathnames.h"
|
|
#include "patchlevel.h"
|
|
#include "fsm.h"
|
|
#include "lcp.h"
|
|
#include "ipcp.h"
|
|
#include "upap.h"
|
|
#include "chap.h"
|
|
|
|
#define FALSE 0
|
|
#define TRUE 1
|
|
|
|
#ifdef ultrix
|
|
char *strdup __ARGS((char *));
|
|
#endif
|
|
|
|
#ifndef GIDSET_TYPE
|
|
#define GIDSET_TYPE gid_t
|
|
#endif
|
|
|
|
/*
|
|
* Prototypes
|
|
*/
|
|
static int setdebug __ARGS((void));
|
|
static int setkdebug __ARGS((char **));
|
|
static int setpassive __ARGS((void));
|
|
static int setsilent __ARGS((void));
|
|
static int noopt __ARGS((void));
|
|
static int setnovj __ARGS((void));
|
|
static int setnovjccomp __ARGS((void));
|
|
static int setvjslots __ARGS((char **));
|
|
static int reqpap __ARGS((void));
|
|
static int nopap __ARGS((void));
|
|
static int setupapfile __ARGS((char **));
|
|
static int nochap __ARGS((void));
|
|
static int reqchap __ARGS((void));
|
|
static int setspeed __ARGS((char *));
|
|
static int noaccomp __ARGS((void));
|
|
static int noasyncmap __ARGS((void));
|
|
static int noipaddr __ARGS((void));
|
|
static int nomagicnumber __ARGS((void));
|
|
static int setasyncmap __ARGS((char **));
|
|
static int setescape __ARGS((char **));
|
|
static int setmru __ARGS((char **));
|
|
static int setmtu __ARGS((char **));
|
|
static int nomru __ARGS((void));
|
|
static int nopcomp __ARGS((void));
|
|
static int setconnector __ARGS((char **));
|
|
static int setdisconnector __ARGS((char **));
|
|
static int setdomain __ARGS((char **));
|
|
static int setnetmask __ARGS((char **));
|
|
static int setcrtscts __ARGS((void));
|
|
static int setxonxoff __ARGS((void));
|
|
static int setnodetach __ARGS((void));
|
|
static int setmodem __ARGS((void));
|
|
static int setlocal __ARGS((void));
|
|
static int setlock __ARGS((void));
|
|
static int setname __ARGS((char **));
|
|
static int setuser __ARGS((char **));
|
|
static int setremote __ARGS((char **));
|
|
static int setauth __ARGS((void));
|
|
static int readfile __ARGS((char **));
|
|
static int setdefaultroute __ARGS((void));
|
|
static int setproxyarp __ARGS((void));
|
|
static int setpersist __ARGS((void));
|
|
static int setdologin __ARGS((void));
|
|
static int setusehostname __ARGS((void));
|
|
static int setnoipdflt __ARGS((void));
|
|
static int setlcptimeout __ARGS((char **));
|
|
static int setlcpterm __ARGS((char **));
|
|
static int setlcpconf __ARGS((char **));
|
|
static int setlcpfails __ARGS((char **));
|
|
static int setipcptimeout __ARGS((char **));
|
|
static int setipcpterm __ARGS((char **));
|
|
static int setipcpconf __ARGS((char **));
|
|
static int setipcpfails __ARGS((char **));
|
|
static int setpaptimeout __ARGS((char **));
|
|
static int setpapreqs __ARGS((char **));
|
|
static int setchaptimeout __ARGS((char **));
|
|
static int setchapchal __ARGS((char **));
|
|
static int setchapintv __ARGS((char **));
|
|
static int setipcpaccl __ARGS((void));
|
|
static int setipcpaccr __ARGS((void));
|
|
static int setlcpechointv __ARGS((char **));
|
|
static int setlcpechofails __ARGS((char **));
|
|
|
|
static int number_option __ARGS((char *, long *, int));
|
|
static int readable __ARGS((int fd));
|
|
|
|
/*
|
|
* Option variables
|
|
*/
|
|
extern char *progname;
|
|
extern int debug;
|
|
extern int kdebugflag;
|
|
extern int modem;
|
|
extern int lockflag;
|
|
extern int crtscts;
|
|
extern int nodetach;
|
|
extern char *connector;
|
|
extern char *disconnector;
|
|
extern int inspeed;
|
|
extern char devname[];
|
|
extern int default_device;
|
|
extern u_long netmask;
|
|
extern int detach;
|
|
extern char user[];
|
|
extern char passwd[];
|
|
extern int auth_required;
|
|
extern int proxyarp;
|
|
extern int persist;
|
|
extern int uselogin;
|
|
extern u_long lcp_echo_interval;
|
|
extern u_long lcp_echo_fails;
|
|
extern char our_name[];
|
|
extern char remote_name[];
|
|
int usehostname;
|
|
int disable_defaultip;
|
|
|
|
/*
|
|
* Valid arguments.
|
|
*/
|
|
static struct cmd {
|
|
char *cmd_name;
|
|
int num_args;
|
|
int (*cmd_func)();
|
|
} cmds[] = {
|
|
{"-all", 0, noopt}, /* Don't request/allow any options */
|
|
{"-ac", 0, noaccomp}, /* Disable Address/Control compress */
|
|
{"-am", 0, noasyncmap}, /* Disable asyncmap negotiation */
|
|
{"-as", 1, setasyncmap}, /* set the desired async map */
|
|
{"-d", 0, setdebug}, /* Increase debugging level */
|
|
{"-detach", 0, setnodetach}, /* don't fork */
|
|
{"-ip", 0, noipaddr}, /* Disable IP address negotiation */
|
|
{"-mn", 0, nomagicnumber}, /* Disable magic number negotiation */
|
|
{"-mru", 0, nomru}, /* Disable mru negotiation */
|
|
{"-p", 0, setpassive}, /* Set passive mode */
|
|
{"-pc", 0, nopcomp}, /* Disable protocol field compress */
|
|
{"+ua", 1, setupapfile}, /* Get PAP user and password from file */
|
|
{"+pap", 0, reqpap}, /* Require PAP auth from peer */
|
|
{"-pap", 0, nopap}, /* Don't allow UPAP authentication with peer */
|
|
{"+chap", 0, reqchap}, /* Require CHAP authentication from peer */
|
|
{"-chap", 0, nochap}, /* Don't allow CHAP authentication with peer */
|
|
{"-vj", 0, setnovj}, /* disable VJ compression */
|
|
{"-vjccomp", 0, setnovjccomp}, /* disable VJ connection-ID compression */
|
|
{"vj-max-slots", 1, setvjslots}, /* Set maximum VJ header slots */
|
|
{"asyncmap", 1, setasyncmap}, /* set the desired async map */
|
|
{"escape", 1, setescape}, /* set chars to escape on transmission */
|
|
{"connect", 1, setconnector}, /* A program to set up a connection */
|
|
{"disconnect", 1, setdisconnector}, /* program to disconnect serial dev. */
|
|
{"crtscts", 0, setcrtscts}, /* set h/w flow control */
|
|
{"xonxoff", 0, setxonxoff}, /* set s/w flow control */
|
|
{"-crtscts", 0, setxonxoff}, /* another name for xonxoff */
|
|
{"debug", 0, setdebug}, /* Increase debugging level */
|
|
{"kdebug", 1, setkdebug}, /* Enable kernel-level debugging */
|
|
{"domain", 1, setdomain}, /* Add given domain name to hostname*/
|
|
{"mru", 1, setmru}, /* Set MRU value for negotiation */
|
|
{"mtu", 1, setmtu}, /* Set our MTU */
|
|
{"netmask", 1, setnetmask}, /* set netmask */
|
|
{"passive", 0, setpassive}, /* Set passive mode */
|
|
{"silent", 0, setsilent}, /* Set silent mode */
|
|
{"modem", 0, setmodem}, /* Use modem control lines */
|
|
{"local", 0, setlocal}, /* Don't use modem control lines */
|
|
{"lock", 0, setlock}, /* Lock serial device (with lock file) */
|
|
{"name", 1, setname}, /* Set local name for authentication */
|
|
{"user", 1, setuser}, /* Set username for PAP auth with peer */
|
|
{"usehostname", 0, setusehostname}, /* Must use hostname for auth. */
|
|
{"remotename", 1, setremote}, /* Set remote name for authentication */
|
|
{"auth", 0, setauth}, /* Require authentication from peer */
|
|
{"file", 1, readfile}, /* Take options from a file */
|
|
{"defaultroute", 0, setdefaultroute}, /* Add default route */
|
|
{"proxyarp", 0, setproxyarp}, /* Add proxy ARP entry */
|
|
{"persist", 0, setpersist}, /* Keep on reopening connection after close */
|
|
{"login", 0, setdologin}, /* Use system password database for UPAP */
|
|
{"noipdefault", 0, setnoipdflt}, /* Don't use name for default IP adrs */
|
|
{"lcp-echo-failure", 1, setlcpechofails}, /* consecutive echo failures */
|
|
{"lcp-echo-interval", 1, setlcpechointv}, /* time for lcp echo events */
|
|
{"lcp-restart", 1, setlcptimeout}, /* Set timeout for LCP */
|
|
{"lcp-max-terminate", 1, setlcpterm}, /* Set max #xmits for term-reqs */
|
|
{"lcp-max-configure", 1, setlcpconf}, /* Set max #xmits for conf-reqs */
|
|
{"lcp-max-failure", 1, setlcpfails}, /* Set max #conf-naks for LCP */
|
|
{"ipcp-restart", 1, setipcptimeout}, /* Set timeout for IPCP */
|
|
{"ipcp-max-terminate", 1, setipcpterm}, /* Set max #xmits for term-reqs */
|
|
{"ipcp-max-configure", 1, setipcpconf}, /* Set max #xmits for conf-reqs */
|
|
{"ipcp-max-failure", 1, setipcpfails}, /* Set max #conf-naks for IPCP */
|
|
{"pap-restart", 1, setpaptimeout}, /* Set timeout for UPAP */
|
|
{"pap-max-authreq", 1, setpapreqs}, /* Set max #xmits for auth-reqs */
|
|
{"chap-restart", 1, setchaptimeout}, /* Set timeout for CHAP */
|
|
{"chap-max-challenge", 1, setchapchal}, /* Set max #xmits for challenge */
|
|
{"chap-interval", 1, setchapintv}, /* Set interval for rechallenge */
|
|
{"ipcp-accept-local", 0, setipcpaccl}, /* Accept peer's address for us */
|
|
{"ipcp-accept-remote", 0, setipcpaccr}, /* Accept peer's address for it */
|
|
{NULL, 0, NULL}
|
|
};
|
|
|
|
|
|
#ifndef IMPLEMENTATION
|
|
#define IMPLEMENTATION ""
|
|
#endif
|
|
|
|
static char *usage_string = "\
|
|
pppd version %s patch level %d%s\n\
|
|
Usage: %s [ arguments ], where arguments are:\n\
|
|
<device> Communicate over the named device\n\
|
|
<speed> Set the baud rate to <speed>\n\
|
|
<loc>:<rem> Set the local and/or remote interface IP\n\
|
|
addresses. Either one may be omitted.\n\
|
|
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\
|
|
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\
|
|
";
|
|
|
|
|
|
/*
|
|
* parse_args - parse a string of arguments, from the command
|
|
* line or from a file.
|
|
*/
|
|
int
|
|
parse_args(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
char *arg, *val;
|
|
struct cmd *cmdp;
|
|
int ret;
|
|
|
|
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) {
|
|
fprintf(stderr, "Too few parameters for command %s\n", arg);
|
|
return 0;
|
|
}
|
|
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
|
|
&& (ret = setspeed(arg)) == 0
|
|
&& (ret = setipaddr(arg)) == 0) {
|
|
fprintf(stderr, "%s: unrecognized command\n", arg);
|
|
usage();
|
|
return 0;
|
|
}
|
|
if (ret < 0) /* error */
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* usage - print out a message telling how to use the program.
|
|
*/
|
|
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;
|
|
int ret;
|
|
|
|
dev = strrchr(devname, '/');
|
|
if (dev == NULL)
|
|
dev = devname;
|
|
else
|
|
++dev;
|
|
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);
|
|
strcat(path, dev);
|
|
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 (").
|
|
* 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;
|
|
|
|
*newlinep = 0;
|
|
len = 0;
|
|
escape = 0;
|
|
quoted = 0;
|
|
|
|
/*
|
|
* First skip white-space and comments
|
|
*/
|
|
while ((c = getc(f)) != EOF) {
|
|
if (c == '\\') {
|
|
/*
|
|
* \<newline> is ignored; \ followed by anything else
|
|
* starts a word.
|
|
*/
|
|
if ((c = getc(f)) == '\n')
|
|
continue;
|
|
word[len++] = '\\';
|
|
escape = 1;
|
|
break;
|
|
}
|
|
if (c == '\n')
|
|
*newlinep = 1; /* next word starts a line */
|
|
else if (c == '#') {
|
|
/* comment - ignore until EOF or \n */
|
|
while ((c = getc(f)) != EOF && c != '\n')
|
|
;
|
|
if (c == EOF)
|
|
break;
|
|
*newlinep = 1;
|
|
} else if (!isspace(c))
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* End of file or error - fail
|
|
*/
|
|
if (c == EOF) {
|
|
if (ferror(f)) {
|
|
perror(filename);
|
|
die(1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
for (;;) {
|
|
/*
|
|
* Is this character escaped by \ ?
|
|
*/
|
|
if (escape) {
|
|
if (c == '\n')
|
|
--len; /* ignore \<newline> */
|
|
else if (c == '"' || isspace(c) || c == '\\')
|
|
word[len-1] = c; /* put special char in word */
|
|
else {
|
|
if (len < MAXWORDLEN-1)
|
|
word[len] = c;
|
|
++len;
|
|
}
|
|
escape = 0;
|
|
} else if (c == '"') {
|
|
quoted = !quoted;
|
|
} else if (!quoted && (isspace(c) || c == '#')) {
|
|
ungetc(c, f);
|
|
break;
|
|
} else {
|
|
if (len < MAXWORDLEN-1)
|
|
word[len] = c;
|
|
++len;
|
|
if (c == '\\')
|
|
escape = 1;
|
|
}
|
|
if ((c = getc(f)) == EOF)
|
|
break;
|
|
}
|
|
|
|
if (ferror(f)) {
|
|
perror(filename);
|
|
die(1);
|
|
}
|
|
|
|
if (len >= MAXWORDLEN) {
|
|
word[MAXWORDLEN-1] = 0;
|
|
fprintf(stderr, "%s: warning: word in file %s too long (%.20s...)\n",
|
|
progname, filename, word);
|
|
} else
|
|
word[len] = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* number_option - parse a numeric parameter for an option
|
|
*/
|
|
static int
|
|
number_option(str, valp, base)
|
|
char *str;
|
|
long *valp;
|
|
int base;
|
|
{
|
|
char *ptr;
|
|
|
|
*valp = strtol(str, &ptr, base);
|
|
if (ptr == str) {
|
|
fprintf(stderr, "%s: invalid number: %s\n", progname, str);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* int_option - like number_option, but valp is int *,
|
|
* the base is assumed to be 0, and *valp is not changed
|
|
* if there is an error.
|
|
*/
|
|
static int
|
|
int_option(str, valp)
|
|
char *str;
|
|
int *valp;
|
|
{
|
|
long v;
|
|
|
|
if (!number_option(str, &v, 0))
|
|
return 0;
|
|
*valp = (int) v;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* The following procedures execute commands.
|
|
*/
|
|
|
|
/*
|
|
* readfile - take commands from a file.
|
|
*/
|
|
static int
|
|
readfile(argv)
|
|
char **argv;
|
|
{
|
|
return options_from_file(*argv, 1, 1);
|
|
}
|
|
|
|
/*
|
|
* setdebug - Set debug (command line argument).
|
|
*/
|
|
static int
|
|
setdebug()
|
|
{
|
|
debug++;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setkdebug - Set kernel debugging level.
|
|
*/
|
|
static int
|
|
setkdebug(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &kdebugflag);
|
|
}
|
|
|
|
/*
|
|
* noopt - Disable all options.
|
|
*/
|
|
static int
|
|
noopt()
|
|
{
|
|
BZERO((char *) &lcp_wantoptions[0], sizeof (struct lcp_options));
|
|
BZERO((char *) &lcp_allowoptions[0], sizeof (struct lcp_options));
|
|
BZERO((char *) &ipcp_wantoptions[0], sizeof (struct ipcp_options));
|
|
BZERO((char *) &ipcp_allowoptions[0], sizeof (struct ipcp_options));
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* noaccomp - Disable Address/Control field compression negotiation.
|
|
*/
|
|
static int
|
|
noaccomp()
|
|
{
|
|
lcp_wantoptions[0].neg_accompression = 0;
|
|
lcp_allowoptions[0].neg_accompression = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* noasyncmap - Disable async map negotiation.
|
|
*/
|
|
static int
|
|
noasyncmap()
|
|
{
|
|
lcp_wantoptions[0].neg_asyncmap = 0;
|
|
lcp_allowoptions[0].neg_asyncmap = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* noipaddr - Disable IP address negotiation.
|
|
*/
|
|
static int
|
|
noipaddr()
|
|
{
|
|
ipcp_wantoptions[0].neg_addr = 0;
|
|
ipcp_allowoptions[0].neg_addr = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nomagicnumber - Disable magic number negotiation.
|
|
*/
|
|
static int
|
|
nomagicnumber()
|
|
{
|
|
lcp_wantoptions[0].neg_magicnumber = 0;
|
|
lcp_allowoptions[0].neg_magicnumber = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nomru - Disable mru negotiation.
|
|
*/
|
|
static int
|
|
nomru()
|
|
{
|
|
lcp_wantoptions[0].neg_mru = 0;
|
|
lcp_allowoptions[0].neg_mru = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setmru - Set MRU for negotiation.
|
|
*/
|
|
static int
|
|
setmru(argv)
|
|
char **argv;
|
|
{
|
|
long mru;
|
|
|
|
if (!number_option(*argv, &mru, 0))
|
|
return 0;
|
|
lcp_wantoptions[0].mru = mru;
|
|
lcp_wantoptions[0].neg_mru = 1;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setmru - Set the largest MTU we'll use.
|
|
*/
|
|
static int
|
|
setmtu(argv)
|
|
char **argv;
|
|
{
|
|
long mtu;
|
|
|
|
if (!number_option(*argv, &mtu, 0))
|
|
return 0;
|
|
if (mtu < MINMRU || mtu > MAXMRU) {
|
|
fprintf(stderr, "mtu option value of %d is too %s\n", mtu,
|
|
(mtu < MINMRU? "small": "large"));
|
|
return 0;
|
|
}
|
|
lcp_allowoptions[0].mru = mtu;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nopcomp - Disable Protocol field compression negotiation.
|
|
*/
|
|
static int
|
|
nopcomp()
|
|
{
|
|
lcp_wantoptions[0].neg_pcompression = 0;
|
|
lcp_allowoptions[0].neg_pcompression = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setpassive - Set passive mode (don't give up if we time out sending
|
|
* LCP configure-requests).
|
|
*/
|
|
static int
|
|
setpassive()
|
|
{
|
|
lcp_wantoptions[0].passive = 1;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setsilent - Set silent mode (don't start sending LCP configure-requests
|
|
* until we get one from the peer).
|
|
*/
|
|
static int
|
|
setsilent()
|
|
{
|
|
lcp_wantoptions[0].silent = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* nopap - Disable PAP authentication with peer.
|
|
*/
|
|
static int
|
|
nopap()
|
|
{
|
|
lcp_allowoptions[0].neg_upap = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* reqpap - Require PAP authentication from peer.
|
|
*/
|
|
static int
|
|
reqpap()
|
|
{
|
|
lcp_wantoptions[0].neg_upap = 1;
|
|
auth_required = 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setupapfile - specifies UPAP info for authenticating with peer.
|
|
*/
|
|
static int
|
|
setupapfile(argv)
|
|
char **argv;
|
|
{
|
|
FILE * ufile;
|
|
int l;
|
|
|
|
lcp_allowoptions[0].neg_upap = 1;
|
|
|
|
/* open user info file */
|
|
if ((ufile = fopen(*argv, "r")) == NULL) {
|
|
fprintf(stderr, "unable to open user login data file %s\n", *argv);
|
|
return 0;
|
|
}
|
|
if (!readable(fileno(ufile))) {
|
|
fprintf(stderr, "%s: access denied\n", *argv);
|
|
return 0;
|
|
}
|
|
check_access(ufile, *argv);
|
|
|
|
/* get username */
|
|
if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
|
|
|| fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
|
|
fprintf(stderr, "Unable to read user login data file %s.\n", *argv);
|
|
return 0;
|
|
}
|
|
fclose(ufile);
|
|
|
|
/* get rid of newlines */
|
|
l = strlen(user);
|
|
if (l > 0 && user[l-1] == '\n')
|
|
user[l-1] = 0;
|
|
l = strlen(passwd);
|
|
if (l > 0 && passwd[l-1] == '\n')
|
|
passwd[l-1] = 0;
|
|
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* nochap - Disable CHAP authentication with peer.
|
|
*/
|
|
static int
|
|
nochap()
|
|
{
|
|
lcp_allowoptions[0].neg_chap = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* reqchap - Require CHAP authentication from peer.
|
|
*/
|
|
static int
|
|
reqchap()
|
|
{
|
|
lcp_wantoptions[0].neg_chap = 1;
|
|
auth_required = 1;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setnovj - disable vj compression
|
|
*/
|
|
static int
|
|
setnovj()
|
|
{
|
|
ipcp_wantoptions[0].neg_vj = 0;
|
|
ipcp_allowoptions[0].neg_vj = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setnovjccomp - disable VJ connection-ID compression
|
|
*/
|
|
static int
|
|
setnovjccomp()
|
|
{
|
|
ipcp_wantoptions[0].cflag = 0;
|
|
ipcp_allowoptions[0].cflag = 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* setvjslots - set maximum number of connection slots for VJ compression
|
|
*/
|
|
static int
|
|
setvjslots(argv)
|
|
char **argv;
|
|
{
|
|
int value;
|
|
|
|
if (!int_option(*argv, &value))
|
|
return 0;
|
|
if (value < 2 || value > 16) {
|
|
fprintf(stderr, "pppd: vj-max-slots value must be between 2 and 16\n");
|
|
return 0;
|
|
}
|
|
ipcp_wantoptions [0].maxslotindex =
|
|
ipcp_allowoptions[0].maxslotindex = value - 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setconnector - Set a program to connect to a serial line
|
|
*/
|
|
static int
|
|
setconnector(argv)
|
|
char **argv;
|
|
{
|
|
connector = strdup(*argv);
|
|
if (connector == NULL)
|
|
novm("connector string");
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* setdisconnector - Set a program to disconnect from the serial line
|
|
*/
|
|
static int
|
|
setdisconnector(argv)
|
|
char **argv;
|
|
{
|
|
disconnector = strdup(*argv);
|
|
if (disconnector == NULL)
|
|
novm("disconnector string");
|
|
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setdomain - Set domain name to append to hostname
|
|
*/
|
|
static int
|
|
setdomain(argv)
|
|
char **argv;
|
|
{
|
|
strncat(hostname, *argv, MAXNAMELEN - strlen(hostname));
|
|
hostname[MAXNAMELEN-1] = 0;
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setasyncmap - add bits to asyncmap (what we request peer to escape).
|
|
*/
|
|
static int
|
|
setasyncmap(argv)
|
|
char **argv;
|
|
{
|
|
long asyncmap;
|
|
|
|
if (!number_option(*argv, &asyncmap, 16))
|
|
return 0;
|
|
lcp_wantoptions[0].asyncmap |= asyncmap;
|
|
lcp_wantoptions[0].neg_asyncmap = 1;
|
|
return(1);
|
|
}
|
|
|
|
|
|
/*
|
|
* setescape - add chars to the set we escape on transmission.
|
|
*/
|
|
static int
|
|
setescape(argv)
|
|
char **argv;
|
|
{
|
|
int n, ret;
|
|
char *p, *endp;
|
|
|
|
p = *argv;
|
|
ret = 1;
|
|
while (*p) {
|
|
n = strtol(p, &endp, 16);
|
|
if (p == endp) {
|
|
fprintf(stderr, "%s: invalid hex number: %s\n", progname, p);
|
|
return 0;
|
|
}
|
|
p = endp;
|
|
if (n < 0 || 0x20 <= n && n <= 0x3F || n == 0x5E || n > 0xFF) {
|
|
fprintf(stderr, "%s: can't escape character 0x%x\n", 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.
|
|
*/
|
|
int
|
|
setdevname(cp)
|
|
char *cp;
|
|
{
|
|
struct stat statbuf;
|
|
char *tty, *ttyname();
|
|
char dev[MAXPATHLEN];
|
|
|
|
if (strncmp("/dev/", cp, 5) != 0) {
|
|
strcpy(dev, "/dev/");
|
|
strncat(dev, cp, MAXPATHLEN - 5);
|
|
dev[MAXPATHLEN-1] = 0;
|
|
cp = dev;
|
|
}
|
|
|
|
/*
|
|
* Check if there is a device by this name.
|
|
*/
|
|
if (stat(cp, &statbuf) < 0) {
|
|
if (errno == ENOENT)
|
|
return 0;
|
|
syslog(LOG_ERR, cp);
|
|
return -1;
|
|
}
|
|
|
|
(void) strncpy(devname, cp, MAXPATHLEN);
|
|
devname[MAXPATHLEN-1] = 0;
|
|
default_device = FALSE;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipaddr - Set the IP address
|
|
*/
|
|
int
|
|
setipaddr(arg)
|
|
char *arg;
|
|
{
|
|
struct hostent *hp;
|
|
char *colon, *index();
|
|
u_long local, remote;
|
|
ipcp_options *wo = &ipcp_wantoptions[0];
|
|
|
|
/*
|
|
* IP address pair separated by ":".
|
|
*/
|
|
if ((colon = index(arg, ':')) == NULL)
|
|
return 0;
|
|
|
|
/*
|
|
* If colon first character, then no local addr.
|
|
*/
|
|
if (colon != arg) {
|
|
*colon = '\0';
|
|
if ((local = inet_addr(arg)) == -1) {
|
|
if ((hp = gethostbyname(arg)) == NULL) {
|
|
fprintf(stderr, "unknown host: %s\n", arg);
|
|
return -1;
|
|
} else {
|
|
local = *(long *)hp->h_addr;
|
|
if (our_name[0] == 0) {
|
|
strncpy(our_name, arg, MAXNAMELEN);
|
|
our_name[MAXNAMELEN-1] = 0;
|
|
}
|
|
}
|
|
}
|
|
if (bad_ip_adrs(local)) {
|
|
fprintf(stderr, "bad local IP address %s\n", ip_ntoa(local));
|
|
return -1;
|
|
}
|
|
if (local != 0)
|
|
wo->ouraddr = local;
|
|
*colon = ':';
|
|
}
|
|
|
|
/*
|
|
* If colon last character, then no remote addr.
|
|
*/
|
|
if (*++colon != '\0') {
|
|
if ((remote = inet_addr(colon)) == -1) {
|
|
if ((hp = gethostbyname(colon)) == NULL) {
|
|
fprintf(stderr, "unknown host: %s\n", colon);
|
|
return -1;
|
|
} else {
|
|
remote = *(long *)hp->h_addr;
|
|
if (remote_name[0] == 0) {
|
|
strncpy(remote_name, colon, MAXNAMELEN);
|
|
remote_name[MAXNAMELEN-1] = 0;
|
|
}
|
|
}
|
|
}
|
|
if (bad_ip_adrs(remote)) {
|
|
fprintf(stderr, "bad remote IP address %s\n", ip_ntoa(remote));
|
|
return -1;
|
|
}
|
|
if (remote != 0)
|
|
wo->hisaddr = remote;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setnoipdflt - disable setipdefault()
|
|
*/
|
|
static int
|
|
setnoipdflt()
|
|
{
|
|
disable_defaultip = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipcpaccl - accept peer's idea of our address
|
|
*/
|
|
static int
|
|
setipcpaccl()
|
|
{
|
|
ipcp_wantoptions[0].accept_local = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipcpaccr - accept peer's idea of its address
|
|
*/
|
|
static int
|
|
setipcpaccr()
|
|
{
|
|
ipcp_wantoptions[0].accept_remote = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* setipdefault - default our local IP address based on our hostname.
|
|
*/
|
|
void
|
|
setipdefault()
|
|
{
|
|
struct hostent *hp;
|
|
u_long local;
|
|
ipcp_options *wo = &ipcp_wantoptions[0];
|
|
|
|
/*
|
|
* If local IP address already given, don't bother.
|
|
*/
|
|
if (wo->ouraddr != 0 || disable_defaultip)
|
|
return;
|
|
|
|
/*
|
|
* Look up our hostname (possibly with domain name appended)
|
|
* and take the first IP address as our local IP address.
|
|
* If there isn't an IP address for our hostname, too bad.
|
|
*/
|
|
wo->accept_local = 1; /* don't insist on this default value */
|
|
if ((hp = gethostbyname(hostname)) == NULL)
|
|
return;
|
|
local = *(long *)hp->h_addr;
|
|
if (local != 0 && !bad_ip_adrs(local))
|
|
wo->ouraddr = local;
|
|
}
|
|
|
|
|
|
/*
|
|
* setnetmask - set the netmask to be used on the interface.
|
|
*/
|
|
static int
|
|
setnetmask(argv)
|
|
char **argv;
|
|
{
|
|
u_long mask;
|
|
|
|
if ((mask = inet_addr(*argv)) == -1 || (netmask & ~mask) != 0) {
|
|
fprintf(stderr, "Invalid netmask %s\n", *argv);
|
|
return 0;
|
|
}
|
|
|
|
netmask = mask;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Return user specified netmask. A value of zero means no netmask has
|
|
* been set.
|
|
*/
|
|
/* ARGSUSED */
|
|
u_long
|
|
GetMask(addr)
|
|
u_long addr;
|
|
{
|
|
return(netmask);
|
|
}
|
|
|
|
|
|
static int
|
|
setcrtscts()
|
|
{
|
|
crtscts = 1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setxonxoff()
|
|
{
|
|
crtscts = 2;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setnodetach()
|
|
{
|
|
nodetach = 1;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
setmodem()
|
|
{
|
|
modem = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setlocal()
|
|
{
|
|
modem = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setlock()
|
|
{
|
|
lockflag = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setusehostname()
|
|
{
|
|
usehostname = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setname(argv)
|
|
char **argv;
|
|
{
|
|
if (our_name[0] == 0) {
|
|
strncpy(our_name, argv[0], MAXNAMELEN);
|
|
our_name[MAXNAMELEN-1] = 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setuser(argv)
|
|
char **argv;
|
|
{
|
|
strncpy(user, argv[0], MAXNAMELEN);
|
|
user[MAXNAMELEN-1] = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setremote(argv)
|
|
char **argv;
|
|
{
|
|
strncpy(remote_name, argv[0], MAXNAMELEN);
|
|
remote_name[MAXNAMELEN-1] = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setauth()
|
|
{
|
|
auth_required = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setdefaultroute()
|
|
{
|
|
ipcp_wantoptions[0].default_route = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setproxyarp()
|
|
{
|
|
ipcp_wantoptions[0].proxy_arp = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setpersist()
|
|
{
|
|
persist = 1;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
setdologin()
|
|
{
|
|
uselogin = 1;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Functions to set the echo interval for modem-less monitors
|
|
*/
|
|
|
|
static int
|
|
setlcpechointv(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_echo_interval);
|
|
}
|
|
|
|
static int
|
|
setlcpechofails(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_echo_fails);
|
|
}
|
|
|
|
/*
|
|
* Functions to set timeouts, max transmits, etc.
|
|
*/
|
|
static int
|
|
setlcptimeout(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].timeouttime);
|
|
}
|
|
|
|
static int setlcpterm(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxtermtransmits);
|
|
}
|
|
|
|
static int setlcpconf(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxconfreqtransmits);
|
|
}
|
|
|
|
static int setlcpfails(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxnakloops);
|
|
}
|
|
|
|
static int setipcptimeout(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipcp_fsm[0].timeouttime);
|
|
}
|
|
|
|
static int setipcpterm(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipcp_fsm[0].maxtermtransmits);
|
|
}
|
|
|
|
static int setipcpconf(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &ipcp_fsm[0].maxconfreqtransmits);
|
|
}
|
|
|
|
static int setipcpfails(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &lcp_fsm[0].maxnakloops);
|
|
}
|
|
|
|
static int setpaptimeout(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &upap[0].us_timeouttime);
|
|
}
|
|
|
|
static int setpapreqs(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &upap[0].us_maxtransmits);
|
|
}
|
|
|
|
static int setchaptimeout(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &chap[0].timeouttime);
|
|
}
|
|
|
|
static int setchapchal(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &chap[0].max_transmits);
|
|
}
|
|
|
|
static int setchapintv(argv)
|
|
char **argv;
|
|
{
|
|
return int_option(*argv, &chap[0].chal_interval);
|
|
}
|