*/
#ifndef lint
-static char rcsid[] = "$Id: options.c,v 1.30 1996/04/04 04:00:24 paulus Exp $";
+static char rcsid[] = "$Id: options.c,v 1.32 1996/07/01 01:18:23 paulus Exp $";
#endif
#include <ctype.h>
#include "upap.h"
#include "chap.h"
#include "ccp.h"
-#include "bpf_compile.h"
#ifdef IPX_CHANGE
#include "ipxcp.h"
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 */
-struct bpf_program pass_filter;/* Filter program for packets to pass */
-struct bpf_program active_filter; /* Filter program for link-active pkts */
+int refuse_pap = 0; /* Set to say we won't do PAP */
+int refuse_chap = 0; /* Set to say we won't do CHAP */
/*
* Prototypes
*/
-static int setdevname __P((char *));
+static int setdevname __P((char *, int));
static int setipaddr __P((char *));
static int setdebug __P((void));
static int setkdebug __P((char **));
static int setvjslots __P((char **));
static int reqpap __P((void));
static int nopap __P((void));
+#ifdef OLD_OPTIONS
static int setupapfile __P((char **));
+#endif
static int nochap __P((void));
static int reqchap __P((void));
static int setspeed __P((char *));
static int setpapcrypt __P((void));
static int setidle __P((char **));
static int setholdoff __P((char **));
-static int setpassfilter __P((char **));
-static int setactivefilter __P((char **));
#ifdef IPX_CHANGE
static int setipxproto __P((void));
#endif
static int number_option __P((char *, u_int32_t *, int));
+static int int_option __P((char *, int *));
static int readable __P((int fd));
-
-void usage();
+static void option_error __P((char *fmt, ...));
/*
* Valid arguments.
{"-p", 0, setpassive}, /* Set passive mode */
{"nopcomp", 0, nopcomp}, /* Disable protocol field compression */
{"-pc", 0, nopcomp}, /* Disable protocol field compress */
+#if OLD_OPTIONS
{"+ua", 1, setupapfile}, /* Get PAP user and password from file */
+#endif
{"require-pap", 0, reqpap}, /* Require PAP authentication from peer */
{"+pap", 0, reqpap}, /* Require PAP auth from peer */
{"refuse-pap", 0, nopap}, /* Don't agree to auth to peer with PAP */
{"papcrypt", 0, setpapcrypt}, /* PAP passwords encrypted */
{"idle", 1, setidle}, /* idle time limit (seconds) */
{"holdoff", 1, setholdoff}, /* set holdoff time (seconds) */
- {"pass-filter", 1, setpassfilter}, /* set filter for packets to pass */
- {"active-filter", 1, setactivefilter}, /* set filter for active pkts */
#ifdef IPX_CHANGE
{"ipx-network", 1, setipxnetwork}, /* IPX network number */
static char *usage_string = "\
pppd version %s patch level %d%s\n\
-Usage: %s [ arguments ], where arguments are:\n\
+Usage: %s [ options ], where options 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\
See pppd(8) for more options.\n\
";
+static char *current_option; /* the name of the option being parsed */
+
/*
* parse_args - parse a string of arguments, from the command
if (cmdp->cmd_name != NULL) {
if (argc < cmdp->num_args) {
- fprintf(stderr, "Too few parameters for command %s\n", arg);
+ 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;
/*
* Maybe a tty name, speed or IP address?
*/
- if ((ret = setdevname(arg)) == 0
+ if ((ret = setdevname(arg, 0)) == 0
&& (ret = setspeed(arg)) == 0
&& (ret = setipaddr(arg)) == 0) {
- fprintf(stderr, "%s: unrecognized command\n", arg);
+ option_error("unrecognized option '%s'", arg);
usage();
return 0;
}
return 1;
}
+/*
+ * scan_args - scan the command line arguments to get the tty name,
+ * if specified.
+ */
+void
+scan_args(argc, argv)
+ 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()
{
- fprintf(stderr, usage_string, VERSION, PATCHLEVEL, IMPLEMENTATION,
- progname);
+ if (phase == PHASE_INITIALIZE)
+ fprintf(stderr, usage_string, VERSION, PATCHLEVEL, IMPLEMENTATION,
+ progname);
}
/*
if ((f = fopen(filename, "r")) == NULL) {
if (!must_exist && errno == ENOENT)
return 1;
- perror(filename);
+ option_error("Can't open options file %s: %m", filename);
return 0;
}
if (check_prot && !readable(fileno(f))) {
- fprintf(stderr, "%s: access denied\n", filename);
+ option_error("Can't open options file %s: access denied", filename);
fclose(f);
return 0;
}
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);
+ option_error(
+ "In file %s: too few parameters for option '%s'",
+ filename, cmd);
fclose(f);
return 0;
}
argv[i] = args[i];
}
+ current_option = cmd;
if (!(*cmdp->cmd_func)(argv)) {
fclose(f);
return 0;
/*
* Maybe a tty name, speed or IP address?
*/
- if ((ret = setdevname(cmd)) == 0
+ if ((ret = setdevname(cmd, 0)) == 0
&& (ret = setspeed(cmd)) == 0
&& (ret = setipaddr(cmd)) == 0) {
- fprintf(stderr, "In file %s: unrecognized command %s\n",
- filename, cmd);
+ option_error("In file %s: unrecognized option '%s'",
+ filename, cmd);
fclose(f);
return 0;
}
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 __V((char *fmt, ...))
+{
+ va_list args;
+ int n;
+ char buf[256];
+
+#if __STDC__
+ va_start(args, fmt);
+#else
+ char *fmt;
+ va_start(args);
+ fmt = va_arg(args, char *);
+#endif
+ 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.
*/
if (ferror(f)) {
if (errno == 0)
errno = EIO;
- perror(filename);
+ option_error("Error reading %s: %m", filename);
die(1);
}
/*
* Warn if the word was too long, and append a terminating null.
*/
if (len >= MAXWORDLEN) {
- fprintf(stderr, "%s: warning: word in file %s too long (%.20s...)\n",
- progname, filename, word);
+ option_error("warning: word in file %s too long (%.20s...)",
+ filename, word);
len = MAXWORDLEN - 1;
}
word[len] = 0;
*valp = strtoul(str, &ptr, base);
if (ptr == str) {
- fprintf(stderr, "%s: invalid number: %s\n", progname, str);
+ option_error("invalid numeric parameter '%s' for %s option",
+ str, current_option);
return 0;
}
return 1;
/*
- * The following procedures execute commands.
+ * The following procedures parse options.
*/
/*
if (!number_option(*argv, &mtu, 0))
return 0;
if (mtu < MINMRU || mtu > MAXMRU) {
- fprintf(stderr, "mtu option value of %ld is too %s\n", mtu,
- (mtu < MINMRU? "small": "large"));
+ option_error("mtu option value of %u is too %s", mtu,
+ (mtu < MINMRU? "small": "large"));
return 0;
}
lcp_allowoptions[0].mru = mtu;
static int
nopap()
{
- lcp_allowoptions[0].neg_upap = 0;
+ refuse_pap = 1;
return (1);
}
return 1;
}
-
+#if OLD_OPTIONS
/*
* setupapfile - specifies UPAP info for authenticating with peer.
*/
/* open user info file */
if ((ufile = fopen(*argv, "r")) == NULL) {
- fprintf(stderr, "unable to open user login data file %s\n", *argv);
+ option_error("unable to open user login data file %s", *argv);
return 0;
}
if (!readable(fileno(ufile))) {
- fprintf(stderr, "%s: access denied\n", *argv);
+ option_error("%s: access denied", *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);
+ option_error("unable to read user login data file %s", *argv);
return 0;
}
fclose(ufile);
return (1);
}
-
+#endif
/*
* nochap - Disable CHAP authentication with peer.
static int
nochap()
{
- lcp_allowoptions[0].neg_chap = 0;
+ refuse_chap = 1;
return (1);
}
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");
+ option_error("vj-max-slots value must be between 2 and 16");
return 0;
}
ipcp_wantoptions [0].maxslotindex =
if (!int_option(*argv, &value))
return 0;
if (value < 0) {
- fprintf(stderr, "pppd: maxconnect time must be positive\n");
+ option_error("maxconnect time must be positive");
return 0;
}
maxconnect = value;
while (*p) {
n = strtol(p, &endp, 16);
if (p == endp) {
- fprintf(stderr, "%s: invalid hex number: %s\n", progname, p);
+ 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) {
- fprintf(stderr, "%s: can't escape character 0x%x\n", progname, n);
+ option_error("can't escape character 0x%x", n);
ret = 0;
} else
xmit_accm[0][n >> 5] |= 1 << (n & 0x1F);
* setdevname - Set the device name.
*/
static int
-setdevname(cp)
+setdevname(cp, quiet)
char *cp;
+ int quiet;
{
struct stat statbuf;
char dev[MAXPATHLEN];
-
+
+ if (*cp == 0)
+ return 0;
+
if (strncmp("/dev/", cp, 5) != 0) {
strcpy(dev, "/dev/");
strncat(dev, cp, MAXPATHLEN - 5);
* Check if there is a device by this name.
*/
if (stat(cp, &statbuf) < 0) {
- if (errno == ENOENT)
+ if (errno == ENOENT || quiet)
return 0;
- syslog(LOG_ERR, cp);
+ option_error("Couldn't stat %s: %m", cp);
return -1;
}
*colon = '\0';
if ((local = inet_addr(arg)) == -1) {
if ((hp = gethostbyname(arg)) == NULL) {
- fprintf(stderr, "unknown host: %s\n", arg);
+ option_error("unknown host: %s", arg);
return -1;
} else {
local = *(u_int32_t *)hp->h_addr;
}
}
if (bad_ip_adrs(local)) {
- fprintf(stderr, "bad local IP address %s\n", ip_ntoa(local));
+ option_error("bad local IP address %s", ip_ntoa(local));
return -1;
}
if (local != 0)
if (*++colon != '\0') {
if ((remote = inet_addr(colon)) == -1) {
if ((hp = gethostbyname(colon)) == NULL) {
- fprintf(stderr, "unknown host: %s\n", colon);
+ option_error("unknown host: %s", colon);
return -1;
} else {
remote = *(u_int32_t *)hp->h_addr;
}
}
if (bad_ip_adrs(remote)) {
- fprintf(stderr, "bad remote IP address %s\n", ip_ntoa(remote));
+ option_error("bad remote IP address %s", ip_ntoa(remote));
return -1;
}
if (remote != 0)
u_int32_t mask;
if ((mask = inet_addr(*argv)) == -1 || (netmask & ~mask) != 0) {
- fprintf(stderr, "Invalid netmask %s\n", *argv);
+ option_error("invalid netmask value '%s'", *argv);
return 0;
}
setdefaultroute()
{
if (!ipcp_allowoptions[0].default_route) {
- fprintf(stderr, "%s: defaultroute option is disabled\n", progname);
+ option_error("defaultroute option is disabled");
return 0;
}
ipcp_wantoptions[0].default_route = 1;
setproxyarp()
{
if (!ipcp_allowoptions[0].proxy_arp) {
- fprintf(stderr, "%s: proxyarp option is disabled\n", progname);
+ option_error("proxyarp option is disabled");
return 0;
}
ipcp_wantoptions[0].proxy_arp = 1;
abits = strtol(str, &endp, 0);
}
if (*endp != 0 || endp == str) {
- fprintf(stderr, "%s: invalid argument format for bsdcomp option\n",
- progname);
+ 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)) {
- fprintf(stderr, "%s: bsdcomp option values must be 0 or %d .. %d\n",
- progname, BSD_MIN_BITS, 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) {
abits = strtol(str, &endp, 0);
}
if (*endp != 0 || endp == str) {
- fprintf(stderr, "%s: invalid argument format for deflate option\n",
- progname);
+ 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)) {
- fprintf(stderr, "%s: deflate option values must be 0 or %d .. %d\n",
- progname, DEFLATE_MIN_SIZE, 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) {
return int_option(*argv, &holdoff);
}
-static int
-setpassfilter(argv)
- char **argv;
-{
- if (bpf_compile(&pass_filter, *argv, 1) == 0)
- return 1;
- fprintf(stderr, "%s: error in pass-filter expression: %s\n",
- progname, bpf_geterr());
- return 0;
-}
-
-static int
-setactivefilter(argv)
- char **argv;
-{
- if (bpf_compile(&active_filter, *argv, 1) == 0)
- return 1;
- fprintf(stderr, "%s: error in active-filter expression: %s\n",
- progname, bpf_geterr());
- return 0;
-}
-
#ifdef IPX_CHANGE
static int
setipxrouter (argv)
while (*src) {
ch = *src++;
if (! isalnum (ch) && ch != '_') {
- fprintf (stderr,
- "%s: IPX router name must be alphanumeric or _\n",
- progname);
+ option_error("IPX router name must be alphanumeric or _");
return 0;
}
if (count >= sizeof (ipxcp_wantoptions[0].name)) {
- fprintf (stderr,
- "%s: IPX router name is limited to %d characters\n",
- progname,
- sizeof (ipxcp_wantoptions[0].name) - 1);
+ option_error("IPX router name is limited to %d characters",
+ sizeof (ipxcp_wantoptions[0].name) - 1);
return 0;
}
return 1;
}
- fprintf(stderr, "%s: invalid argument for ipx-node option\n",
- progname);
+ option_error("invalid parameter '%s' for ipx-node option", *argv);
return 0;
}
static int
setipxproto()
{
- ipx_enabled = 1; /* Enable IPXCP and IPX protocol */
+ ipxcp_protent.enabled_flag = 1;
return 1;
}
static int
resetipxproto()
{
- ipx_enabled = 0; /* Disable IPXCP and IPX protocol */
+ ipxcp_protent.enabled_flag = 0;
return 1;
}
#endif /* IPX_CHANGE */
dns = inet_addr(*argv);
if (dns == -1) {
if ((hp = gethostbyname(*argv)) == NULL) {
- fprintf(stderr, "Invalid DNS Address %s\n", *argv);
+ option_error("invalid address parameter '%s' for ms-dns option",
+ *argv);
return 0;
}
dns = *(u_int32_t *)hp->h_addr;
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