| /* |
| * 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 |
| |
| #ifdef WIN32 |
| #include <pcap-stdinc.h> |
| #else /* WIN32 */ |
| #if HAVE_INTTYPES_H |
| #include <inttypes.h> |
| #elif HAVE_STDINT_H |
| #include <stdint.h> |
| #endif |
| #ifdef HAVE_SYS_BITYPES_H |
| #include <sys/bitypes.h> |
| #endif |
| #include <sys/types.h> |
| #endif /* WIN32 */ |
| |
| #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); |
| } |