163 lines
3.3 KiB
C
163 lines
3.3 KiB
C
/*
|
|
* Copyright (c) 1990, 1993, 1994, 1995, 1996
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that: (1) source code distributions
|
|
* retain the above copyright notice and this paragraph in its entirety, (2)
|
|
* distributions including binary code include the above copyright notice and
|
|
* this paragraph in its entirety in the documentation or other materials
|
|
* provided with the distribution, and (3) all advertising materials mentioning
|
|
* features or use of this software display the following acknowledgement:
|
|
* ``This product includes software developed by the University of California,
|
|
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
|
|
* the University nor the names of its contributors may 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
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] _U_ =
|
|
"@(#) $Header: /tcpdump/master/libpcap/etherent.c,v 1.23 2006/10/04 18:09:22 guy Exp $ (LBL)";
|
|
#endif
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <ctype.h>
|
|
#include <memory.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "pcap-int.h"
|
|
|
|
#include <pcap/namedb.h>
|
|
|
|
#ifdef HAVE_OS_PROTO_H
|
|
#include "os-proto.h"
|
|
#endif
|
|
|
|
static inline int xdtoi(int);
|
|
static inline int skip_space(FILE *);
|
|
static inline int skip_line(FILE *);
|
|
|
|
/* Hex digit to integer. */
|
|
static inline int
|
|
xdtoi(c)
|
|
register int c;
|
|
{
|
|
if (isdigit(c))
|
|
return c - '0';
|
|
else if (islower(c))
|
|
return c - 'a' + 10;
|
|
else
|
|
return c - 'A' + 10;
|
|
}
|
|
|
|
static inline int
|
|
skip_space(f)
|
|
FILE *f;
|
|
{
|
|
int c;
|
|
|
|
do {
|
|
c = getc(f);
|
|
} while (isspace(c) && c != '\n');
|
|
|
|
return c;
|
|
}
|
|
|
|
static inline int
|
|
skip_line(f)
|
|
FILE *f;
|
|
{
|
|
int c;
|
|
|
|
do
|
|
c = getc(f);
|
|
while (c != '\n' && c != EOF);
|
|
|
|
return c;
|
|
}
|
|
|
|
struct pcap_etherent *
|
|
pcap_next_etherent(FILE *fp)
|
|
{
|
|
register int c, d, i;
|
|
char *bp;
|
|
static struct pcap_etherent e;
|
|
|
|
memset((char *)&e, 0, sizeof(e));
|
|
do {
|
|
/* Find addr */
|
|
c = skip_space(fp);
|
|
if (c == '\n')
|
|
continue;
|
|
|
|
/* If this is a comment, or first thing on line
|
|
cannot be etehrnet address, skip the line. */
|
|
if (!isxdigit(c)) {
|
|
c = skip_line(fp);
|
|
continue;
|
|
}
|
|
|
|
/* must be the start of an address */
|
|
for (i = 0; i < 6; i += 1) {
|
|
d = xdtoi(c);
|
|
c = getc(fp);
|
|
if (isxdigit(c)) {
|
|
d <<= 4;
|
|
d |= xdtoi(c);
|
|
c = getc(fp);
|
|
}
|
|
e.addr[i] = d;
|
|
if (c != ':')
|
|
break;
|
|
c = getc(fp);
|
|
}
|
|
if (c == EOF)
|
|
break;
|
|
|
|
/* Must be whitespace */
|
|
if (!isspace(c)) {
|
|
c = skip_line(fp);
|
|
continue;
|
|
}
|
|
c = skip_space(fp);
|
|
|
|
/* hit end of line... */
|
|
if (c == '\n')
|
|
continue;
|
|
|
|
if (c == '#') {
|
|
c = skip_line(fp);
|
|
continue;
|
|
}
|
|
|
|
/* pick up name */
|
|
bp = e.name;
|
|
/* Use 'd' to prevent buffer overflow. */
|
|
d = sizeof(e.name) - 1;
|
|
do {
|
|
*bp++ = c;
|
|
c = getc(fp);
|
|
} while (!isspace(c) && c != EOF && --d > 0);
|
|
*bp = '\0';
|
|
|
|
/* Eat trailing junk */
|
|
if (c != '\n')
|
|
(void)skip_line(fp);
|
|
|
|
return &e;
|
|
|
|
} while (c != EOF);
|
|
|
|
return (NULL);
|
|
}
|