159 lines
2.8 KiB
C
159 lines
2.8 KiB
C
/* $NetBSD: ipft_hx.c,v 1.5 2005/02/08 07:01:53 martti Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1995-2001 by Darren Reed.
|
|
*
|
|
* See the IPFILTER.LICENCE file for details on licencing.
|
|
*/
|
|
#if !defined(lint)
|
|
static const char sccsid[] = "@(#)ipft_hx.c 1.1 3/9/96 (C) 1996 Darren Reed";
|
|
static const char rcsid[] = "@(#)Id: ipft_hx.c,v 1.11.4.1 2004/12/09 19:41:20 darrenr Exp";
|
|
#endif
|
|
|
|
#include <ctype.h>
|
|
|
|
#include "ipf.h"
|
|
#include "ipt.h"
|
|
|
|
|
|
extern int opts;
|
|
|
|
static int hex_open __P((char *));
|
|
static int hex_close __P((void));
|
|
static int hex_readip __P((char *, int, char **, int *));
|
|
static char *readhex __P((char *, char *));
|
|
|
|
struct ipread iphex = { hex_open, hex_close, hex_readip, 0 };
|
|
static FILE *tfp = NULL;
|
|
static int tfd = -1;
|
|
|
|
static int hex_open(fname)
|
|
char *fname;
|
|
{
|
|
if (tfp && tfd != -1) {
|
|
rewind(tfp);
|
|
return tfd;
|
|
}
|
|
|
|
if (!strcmp(fname, "-")) {
|
|
tfd = 0;
|
|
tfp = stdin;
|
|
} else {
|
|
tfd = open(fname, O_RDONLY);
|
|
if (tfd != -1)
|
|
tfp = fdopen(tfd, "r");
|
|
}
|
|
return tfd;
|
|
}
|
|
|
|
|
|
static int hex_close()
|
|
{
|
|
int cfd = tfd;
|
|
|
|
tfd = -1;
|
|
return close(cfd);
|
|
}
|
|
|
|
|
|
static int hex_readip(buf, cnt, ifn, dir)
|
|
char *buf, **ifn;
|
|
int cnt, *dir;
|
|
{
|
|
register char *s, *t, *u;
|
|
char line[513];
|
|
ip_t *ip;
|
|
|
|
/*
|
|
* interpret start of line as possibly "[ifname]" or
|
|
* "[in/out,ifname]".
|
|
*/
|
|
if (ifn)
|
|
*ifn = NULL;
|
|
if (dir)
|
|
*dir = 0;
|
|
ip = (ip_t *)buf;
|
|
while (fgets(line, sizeof(line)-1, tfp)) {
|
|
if ((s = strchr(line, '\n'))) {
|
|
if (s == line)
|
|
return (char *)ip - buf;
|
|
*s = '\0';
|
|
}
|
|
if ((s = strchr(line, '#')))
|
|
*s = '\0';
|
|
if (!*line)
|
|
continue;
|
|
if (!(opts & OPT_BRIEF)) {
|
|
printf("input: %s", line);
|
|
}
|
|
|
|
if ((*line == '[') && (s = strchr(line, ']'))) {
|
|
t = line + 1;
|
|
if (s - t > 0) {
|
|
*s++ = '\0';
|
|
if ((u = strchr(t, ',')) && (u < s)) {
|
|
u++;
|
|
if (ifn)
|
|
*ifn = strdup(u);
|
|
if (dir) {
|
|
if (*t == 'i')
|
|
*dir = 0;
|
|
else if (*t == 'o')
|
|
*dir = 1;
|
|
}
|
|
} else if (ifn)
|
|
*ifn = t;
|
|
}
|
|
} else
|
|
s = line;
|
|
t = (char *)ip;
|
|
ip = (ip_t *)readhex(s, (char *)ip);
|
|
if (!(opts & OPT_BRIEF)) {
|
|
if (opts & OPT_ASCII) {
|
|
if (t < (char *)ip)
|
|
putchar('\t');
|
|
while (t < (char *)ip) {
|
|
if (ISPRINT(*t) && ISASCII(*t))
|
|
putchar(*t);
|
|
else
|
|
putchar('.');
|
|
t++;
|
|
}
|
|
}
|
|
putchar('\n');
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
static char *readhex(src, dst)
|
|
register char *src, *dst;
|
|
{
|
|
int state = 0;
|
|
char c;
|
|
|
|
while ((c = *src++)) {
|
|
if (ISSPACE(c)) {
|
|
if (state) {
|
|
dst++;
|
|
state = 0;
|
|
}
|
|
continue;
|
|
} else if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') ||
|
|
(c >= 'A' && c <= 'F')) {
|
|
c = ISDIGIT(c) ? (c - '0') : (TOUPPER(c) - 55);
|
|
if (state == 0) {
|
|
*dst = (c << 4);
|
|
state++;
|
|
} else {
|
|
*dst++ |= c;
|
|
state = 0;
|
|
}
|
|
} else
|
|
break;
|
|
}
|
|
return dst;
|
|
}
|