freebsd-dev/sbin/atm/atmconfig/main.c
Hartmut Brandt 791a6fe762 Add a program for configuration of the ATM drivers and the IP over ATM
stuff. This utility allows inspection of the ATM characteristics,
the PHY layer, including statistics of both, the retrival of the
list of currently open channels and also allows access to utopia(4).
2003-08-12 14:25:57 +00:00

520 lines
11 KiB
C

/*
* Copyright (c) 2001-2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Author: Hartmut Brandt <harti@freebsd.org>
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/sysctl.h>
#include <netdb.h>
#include <stdarg.h>
#include <ctype.h>
#include <limits.h>
#include <inttypes.h>
#include "atmconfig.h"
#include "private.h"
/* verbosity level */
int verbose;
/* notitle option */
static int notitle;
/* need to put heading before next output */
static int need_heading;
/*
* TOP LEVEL commands
*/
static void help_func(int argc, char *argv[]) __dead2;
static const struct cmdtab main_tab[] = {
{ "help", NULL, help_func },
{ "options", NULL, NULL },
{ "commands", NULL, NULL },
{ "diag", diag_tab, NULL },
{ "natm", natm_tab, NULL },
{ NULL, NULL, NULL }
};
static int
substr(const char *s1, const char *s2)
{
return (strlen(s1) <= strlen(s2) && strncmp(s1, s2, strlen(s1)) == 0);
}
/*
* Function to print help. The help argument is in argv[0] here.
*/
static void
help_func(int argc, char *argv[])
{
FILE *hp;
const char *start, *end;
char *fname;
off_t match, last_match;
char line[LINE_MAX];
char key[100];
int level, i;
/*
* Find the help file
*/
hp = NULL;
for (start = PATH_HELP; *start != '\0'; start = end + 1) {
for (end = start; *end != ':' && *end != '\0'; end++)
;
if (start == end) {
if (asprintf(&fname, "%s", FILE_HELP) == -1)
err(1, NULL);
} else {
if (asprintf(&fname, "%.*s/%s", (int)(end - start),
start, FILE_HELP) == -1)
err(1, NULL);
}
if ((hp = fopen(fname, "r")) != NULL)
break;
free(fname);
}
if (hp == NULL)
errx(1, "help file not found");
if (argc == 0) {
argv[0] = __DECONST(char *, "intro");
argc = 1;
}
optind = 0;
match = -1;
last_match = -1;
for (;;) {
/* read next line */
if (fgets(line, sizeof(line), hp) == NULL) {
if (ferror(hp))
err(1, fname);
/* EOF */
clearerr(hp);
level = 999;
goto stop;
}
if (line[0] != '^')
continue;
if (sscanf(line + 1, "%d%99s", &level, key) != 2)
errx(1, "error in help file '%s'", line);
if (level < optind) {
stop:
/* next higher level entry - stop this level */
if (match == -1) {
/* not found */
goto not_found;
}
/* go back to the match */
if (fseeko(hp, match, SEEK_SET) == -1)
err(1, fname);
last_match = match;
match = -1;
/* go to next key */
if (++optind >= argc)
break;
}
if (level == optind) {
if (substr(argv[optind], key)) {
if (match != -1) {
printf("Ambiguous topic.");
goto list_topics;
}
if ((match = ftello(hp)) == -1)
err(1, fname);
}
}
}
if (last_match == -1) {
if (fseek(hp, 0L, SEEK_SET) == -1)
err(1, fname);
} else {
if (fseeko(hp, last_match, SEEK_SET) == -1)
err(1, fname);
}
for (;;) {
if (fgets(line, sizeof(line), hp) == NULL) {
if (ferror(hp))
err(1, fname);
break;
}
if (line[0] == '#')
continue;
if (line[0] == '^')
break;
printf("%s", line);
}
exit(0);
not_found:
printf("Topic not found.");
list_topics:
printf(" Use one of:\natmconfig");
for (i = 0; i < optind; i++)
printf(" %s", argv[i]);
printf(" [");
/* list all the keys at this level */
if (last_match == -1) {
if (fseek(hp, 0L, SEEK_SET) == -1)
err(1, fname);
} else {
if (fseeko(hp, last_match, SEEK_SET) == -1)
err(1, fname);
}
for (;;) {
/* read next line */
if (fgets(line, sizeof(line), hp) == NULL) {
if (ferror(hp))
err(1, fname);
break;
}
if (line[0] == '#' || line[0] != '^')
continue;
if (sscanf(line + 1, "%d%99s", &level, key) != 2)
errx(1, "error in help file '%s'", line);
if (level < optind)
break;
if (level == optind)
printf(" %s", key);
}
printf(" ]\n");
exit(1);
}
int
main(int argc, char *argv[])
{
int opt, i;
const struct cmdtab *match, *cc, *tab;
while ((opt = getopt(argc, argv, "htv")) != -1)
switch (opt) {
case 'h':
help_func(0, argv);
case 'v':
verbose++;
break;
case 't':
notitle = 1;
break;
}
if (argv[optind] == NULL)
help_func(0, argv);
argc -= optind;
argv += optind;
cc = main_tab;
i = 0;
for (;;) {
/*
* Scan the table for a match
*/
tab = cc;
match = NULL;
while (cc->string != NULL) {
if (substr(argv[i], cc->string)) {
if (match != NULL) {
printf("Ambiguous option '%s'",
argv[i]);
cc = tab;
goto subopts;
}
match = cc;
}
cc++;
}
if ((cc = match) == NULL) {
printf("Unknown option '%s'", argv[i]);
cc = tab;
goto subopts;
}
/*
* Have a match. If there is no subtable, there must
* be either a handler or the command is only a help entry.
*/
if (cc->sub == NULL) {
if (cc->func != NULL)
break;
printf("Unknown option '%s'", argv[i]);
cc = tab;
goto subopts;
}
/*
* Look at the next argument. If it doesn't exist or it
* looks like a switch, terminate the scan here.
*/
if (argv[i + 1] == NULL || argv[i + 1][0] == '-') {
if (cc->func != NULL)
break;
printf("Need sub-option for '%s'", argv[i]);
cc = cc->sub;
goto subopts;
}
cc = cc->sub;
i++;
}
argc -= i + 1;
argv += i + 1;
(*cc->func)(argc, argv);
return (0);
subopts:
printf(". Select one of:\n");
while (cc->string != NULL) {
if (cc->func != NULL || cc->sub != NULL)
printf("%s ", cc->string);
cc++;
}
printf("\n");
return (1);
}
void
verb(const char *fmt, ...)
{
va_list ap;
if (verbose) {
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
}
}
void
heading(const char *fmt, ...)
{
va_list ap;
if (need_heading) {
need_heading = 0;
if (!notitle) {
va_start(ap, fmt);
fprintf(stdout, fmt, ap);
va_end(ap);
}
}
}
void
heading_init(void)
{
need_heading = 1;
}
/*
* stringify an enumerated value
*/
const char *
penum(int32_t value, const struct penum *strtab, char *buf)
{
while (strtab->str != NULL) {
if (strtab->value == value) {
strcpy(buf, strtab->str);
return (buf);
}
strtab++;
}
warnx("illegal value for enumerated variable '%d'", value);
strcpy(buf, "?");
return (buf);
}
/*
* Parse command line options
*/
int
parse_options(int *pargc, char ***pargv, const struct option *opts)
{
const struct option *o, *m;
char *arg;
u_long ularg, ularg1;
long larg;
char *end;
if (*pargc == 0)
return (-1);
arg = (*pargv)[0];
if (arg[0] != '-' || arg[1] == '\0')
return (-1);
if (arg[1] == '-' && arg[2] == '\0') {
(*pargv)++;
(*pargc)--;
return (-1);
}
m = NULL;
for (o = opts; o->optstr != NULL; o++) {
if (strlen(arg + 1) <= strlen(o->optstr) &&
strncmp(arg + 1, o->optstr, strlen(arg + 1)) == 0) {
if (m != NULL)
errx(1, "ambiguous option '%s'", arg);
m = o;
}
}
if (m == NULL)
errx(1, "unknown option '%s'", arg);
(*pargv)++;
(*pargc)--;
if (m->opttype == OPT_NONE)
return (m - opts);
if (m->opttype == OPT_SIMPLE) {
*(int *)m->optarg = 1;
return (m - opts);
}
if (*pargc == 0)
errx(1, "option requires argument '%s'", arg);
optarg = *(*pargv)++;
(*pargc)--;
switch (m->opttype) {
case OPT_UINT:
ularg = strtoul(optarg, &end, 0);
if (*end != '\0')
errx(1, "bad unsigned integer argument for '%s'", arg);
if (ularg > UINT_MAX)
errx(1, "argument to large for option '%s'", arg);
*(u_int *)m->optarg = (u_int)ularg;
break;
case OPT_INT:
larg = strtol(optarg, &end, 0);
if (*end != '\0')
errx(1, "bad integer argument for '%s'", arg);
if (larg > INT_MAX || larg < INT_MIN)
errx(1, "argument out of range for option '%s'", arg);
*(int *)m->optarg = (int)larg;
break;
case OPT_UINT32:
ularg = strtoul(optarg, &end, 0);
if (*end != '\0')
errx(1, "bad unsigned integer argument for '%s'", arg);
if (ularg > UINT32_MAX)
errx(1, "argument to large for option '%s'", arg);
*(uint32_t *)m->optarg = (uint32_t)ularg;
break;
case OPT_INT32:
larg = strtol(optarg, &end, 0);
if (*end != '\0')
errx(1, "bad integer argument for '%s'", arg);
if (larg > INT32_MAX || larg < INT32_MIN)
errx(1, "argument out of range for option '%s'", arg);
*(int32_t *)m->optarg = (int32_t)larg;
break;
case OPT_UINT64:
*(uint64_t *)m->optarg = strtoull(optarg, &end, 0);
if (*end != '\0')
errx(1, "bad unsigned integer argument for '%s'", arg);
break;
case OPT_INT64:
*(int64_t *)m->optarg = strtoll(optarg, &end, 0);
if (*end != '\0')
errx(1, "bad integer argument for '%s'", arg);
break;
case OPT_FLAG:
if (strcasecmp(optarg, "enable") == 0 ||
strcasecmp(optarg, "yes") == 0 ||
strcasecmp(optarg, "true") == 0 ||
strcasecmp(optarg, "on") == 0 ||
strcmp(optarg, "1") == 0)
*(int *)m->optarg = 1;
else if (strcasecmp(optarg, "disable") == 0 ||
strcasecmp(optarg, "no") == 0 ||
strcasecmp(optarg, "false") == 0 ||
strcasecmp(optarg, "off") == 0 ||
strcmp(optarg, "0") == 0)
*(int *)m->optarg = 0;
else
errx(1, "bad boolean argument to '%s'", arg);
break;
case OPT_VCI:
ularg = strtoul(optarg, &end, 0);
if (*end == '.') {
ularg1 = strtoul(end + 1, &end, 0);
} else {
ularg1 = ularg;
ularg = 0;
}
if (*end != '\0')
errx(1, "bad VCI value for option '%s'", arg);
if (ularg > 0xff)
errx(1, "VPI value too large for option '%s'", arg);
if (ularg1 > 0xffff)
errx(1, "VCI value too large for option '%s'", arg);
((u_int *)m->optarg)[0] = ularg;
((u_int *)m->optarg)[1] = ularg1;
break;
case OPT_STRING:
if (m->optarg != NULL)
*(const char **)m->optarg = optarg;
break;
default:
errx(1, "(internal) bad option type %u for '%s'",
m->opttype, arg);
}
return (m - opts);
}