The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1990, 1993, 1994, 1995, 1996 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that: (1) source code distributions |
| 7 | * retain the above copyright notice and this paragraph in its entirety, (2) |
| 8 | * distributions including binary code include the above copyright notice and |
| 9 | * this paragraph in its entirety in the documentation or other materials |
| 10 | * provided with the distribution, and (3) all advertising materials mentioning |
| 11 | * features or use of this software display the following acknowledgement: |
| 12 | * ``This product includes software developed by the University of California, |
| 13 | * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| 14 | * the University nor the names of its contributors may be used to endorse |
| 15 | * or promote products derived from this software without specific prior |
| 16 | * written permission. |
| 17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| 18 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 20 | */ |
| 21 | |
| 22 | #ifndef lint |
| 23 | static const char rcsid[] _U_ = |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 24 | "@(#) $Header: /tcpdump/master/libpcap/etherent.c,v 1.23 2006-10-04 18:09:22 guy Exp $ (LBL)"; |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 25 | #endif |
| 26 | |
| 27 | #ifdef HAVE_CONFIG_H |
| 28 | #include "config.h" |
| 29 | #endif |
| 30 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 31 | #ifdef WIN32 |
| 32 | #include <pcap-stdinc.h> |
| 33 | #else /* WIN32 */ |
| 34 | #if HAVE_INTTYPES_H |
| 35 | #include <inttypes.h> |
| 36 | #elif HAVE_STDINT_H |
| 37 | #include <stdint.h> |
| 38 | #endif |
| 39 | #ifdef HAVE_SYS_BITYPES_H |
| 40 | #include <sys/bitypes.h> |
| 41 | #endif |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 42 | #include <sys/types.h> |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 43 | #endif /* WIN32 */ |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 44 | |
| 45 | #include <ctype.h> |
| 46 | #include <memory.h> |
| 47 | #include <stdio.h> |
| 48 | #include <string.h> |
| 49 | |
| 50 | #include "pcap-int.h" |
| 51 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 52 | #include <pcap/namedb.h> |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 53 | |
| 54 | #ifdef HAVE_OS_PROTO_H |
| 55 | #include "os-proto.h" |
| 56 | #endif |
| 57 | |
| 58 | static inline int xdtoi(int); |
| 59 | static inline int skip_space(FILE *); |
| 60 | static inline int skip_line(FILE *); |
| 61 | |
| 62 | /* Hex digit to integer. */ |
| 63 | static inline int |
| 64 | xdtoi(c) |
| 65 | register int c; |
| 66 | { |
| 67 | if (isdigit(c)) |
| 68 | return c - '0'; |
| 69 | else if (islower(c)) |
| 70 | return c - 'a' + 10; |
| 71 | else |
| 72 | return c - 'A' + 10; |
| 73 | } |
| 74 | |
| 75 | static inline int |
| 76 | skip_space(f) |
| 77 | FILE *f; |
| 78 | { |
| 79 | int c; |
| 80 | |
| 81 | do { |
| 82 | c = getc(f); |
| 83 | } while (isspace(c) && c != '\n'); |
| 84 | |
| 85 | return c; |
| 86 | } |
| 87 | |
| 88 | static inline int |
| 89 | skip_line(f) |
| 90 | FILE *f; |
| 91 | { |
| 92 | int c; |
| 93 | |
| 94 | do |
| 95 | c = getc(f); |
| 96 | while (c != '\n' && c != EOF); |
| 97 | |
| 98 | return c; |
| 99 | } |
| 100 | |
| 101 | struct pcap_etherent * |
| 102 | pcap_next_etherent(FILE *fp) |
| 103 | { |
| 104 | register int c, d, i; |
| 105 | char *bp; |
| 106 | static struct pcap_etherent e; |
| 107 | |
| 108 | memset((char *)&e, 0, sizeof(e)); |
| 109 | do { |
| 110 | /* Find addr */ |
| 111 | c = skip_space(fp); |
| 112 | if (c == '\n') |
| 113 | continue; |
| 114 | |
| 115 | /* If this is a comment, or first thing on line |
| 116 | cannot be etehrnet address, skip the line. */ |
| 117 | if (!isxdigit(c)) { |
| 118 | c = skip_line(fp); |
| 119 | continue; |
| 120 | } |
| 121 | |
| 122 | /* must be the start of an address */ |
| 123 | for (i = 0; i < 6; i += 1) { |
| 124 | d = xdtoi(c); |
| 125 | c = getc(fp); |
| 126 | if (isxdigit(c)) { |
| 127 | d <<= 4; |
| 128 | d |= xdtoi(c); |
| 129 | c = getc(fp); |
| 130 | } |
| 131 | e.addr[i] = d; |
| 132 | if (c != ':') |
| 133 | break; |
| 134 | c = getc(fp); |
| 135 | } |
| 136 | if (c == EOF) |
| 137 | break; |
| 138 | |
| 139 | /* Must be whitespace */ |
| 140 | if (!isspace(c)) { |
| 141 | c = skip_line(fp); |
| 142 | continue; |
| 143 | } |
| 144 | c = skip_space(fp); |
| 145 | |
| 146 | /* hit end of line... */ |
| 147 | if (c == '\n') |
| 148 | continue; |
| 149 | |
| 150 | if (c == '#') { |
| 151 | c = skip_line(fp); |
| 152 | continue; |
| 153 | } |
| 154 | |
| 155 | /* pick up name */ |
| 156 | bp = e.name; |
| 157 | /* Use 'd' to prevent buffer overflow. */ |
| 158 | d = sizeof(e.name) - 1; |
| 159 | do { |
| 160 | *bp++ = c; |
| 161 | c = getc(fp); |
| 162 | } while (!isspace(c) && c != EOF && --d > 0); |
| 163 | *bp = '\0'; |
| 164 | |
| 165 | /* Eat trailing junk */ |
| 166 | if (c != '\n') |
| 167 | (void)skip_line(fp); |
| 168 | |
| 169 | return &e; |
| 170 | |
| 171 | } while (c != EOF); |
| 172 | |
| 173 | return (NULL); |
| 174 | } |