1 |
/* |
2 |
mac2eui64.c |
3 |
|
4 |
Conversion from the IEEE 802 MAC format to the (modified) IEEE EUI-64 format. |
5 |
Displays values suitable for use as a 64 bit interface ID in AAAA and A6 RRs. |
6 |
Also displays labels suitable for use with PTR RRs in the reverse zone |
7 |
ip6.arpa. |
8 |
|
9 |
Updated in 2015 to conform to ISO C 2011. |
10 |
|
11 |
Copyright (C) 2003 Trond Endrestøl <Trond.Endrestol@ximalas.info> |
12 |
|
13 |
This program is free software; you can redistribute it and/or modify |
14 |
it under the terms of the GNU General Public License as published by |
15 |
the Free Software Foundation; either version 2 of the License, or |
16 |
(at your option) any later version. |
17 |
|
18 |
This program is distributed in the hope that it will be useful, |
19 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
20 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
21 |
GNU General Public License for more details. |
22 |
|
23 |
You should have received a copy of the GNU General Public License |
24 |
along with this program; if not, write to the Free Software |
25 |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
26 |
|
27 |
$Ximalas$ |
28 |
*/ |
29 |
#include <ctype.h> |
30 |
#include <stdio.h> |
31 |
#include <stdlib.h> |
32 |
#include <unistd.h> |
33 |
|
34 |
void Usage(const char * const argv0, int ReturnValue) __attribute__((noreturn)); |
35 |
void Version(const char * const argv0) __attribute__((noreturn)); |
36 |
void TransformMAC(const char * const argv0, const char * const argvi); |
37 |
|
38 |
int main(int argc, char **argv) |
39 |
{ |
40 |
int c; |
41 |
ssize_t i; |
42 |
|
43 |
opterr = 0; |
44 |
while ((c = getopt(argc, argv, "hv")) != -1) { |
45 |
switch (c) { |
46 |
case 'h': |
47 |
Usage(argv[0], EXIT_SUCCESS); |
48 |
//break; |
49 |
|
50 |
case 'v': |
51 |
Version(argv[0]); |
52 |
//break; |
53 |
|
54 |
case '?': |
55 |
fprintf(stderr, "%s: invalid option -%c\n", argv[0], optopt); |
56 |
break; |
57 |
|
58 |
default: |
59 |
fprintf(stderr, "%s: something is dead wrong with getopt() or with this program\n", argv[0]); |
60 |
return EXIT_FAILURE; |
61 |
//break; |
62 |
} |
63 |
} |
64 |
|
65 |
i = optind; |
66 |
|
67 |
if (i == argc) |
68 |
Usage(argv[0], EXIT_FAILURE); |
69 |
|
70 |
TransformMAC(argv[0], argv[i++]); |
71 |
|
72 |
while (i < argc) { |
73 |
puts(""); |
74 |
TransformMAC(argv[0], argv[i++]); |
75 |
} |
76 |
|
77 |
return EXIT_SUCCESS; |
78 |
} /* main() */ |
79 |
|
80 |
void Usage(const char * const argv0, int ReturnValue) |
81 |
{ |
82 |
fprintf((ReturnValue == EXIT_SUCCESS) ? stdout : stderr, |
83 |
"Usage: %s [-h | -v | <macaddress1> [macaddress2] ... [macaddressN]]\n\n" |
84 |
|
85 |
"Options:\n" |
86 |
"-h show this help\n" |
87 |
"-v display version and copyright\n\n" |
88 |
|
89 |
"MAC addresses must consist of 12 hex digits with leading zeroes.\n" |
90 |
"Any punctuation is ignored. Examples of valid MAC addresses:\n\n" |
91 |
|
92 |
" 00:50:DA:2C:8F:55\n" |
93 |
" 00-50-DA-2C-8F-55\n" |
94 |
" 0050.DA2C.8F55\n" |
95 |
" 0050DA2C8F55\n", |
96 |
argv0); |
97 |
exit(ReturnValue); |
98 |
} /* Usage() */ |
99 |
|
100 |
void Version(const char * const argv0) |
101 |
{ |
102 |
printf("%s version 1.0\n\n" |
103 |
|
104 |
"Conversion from the IEEE 802 MAC format to the (modified) IEEE EUI-64 format.\n" |
105 |
"Displays values suitable for use as a 64 bit interface ID in AAAA and A6 RRs.\n" |
106 |
"Also displays labels suitable for use with PTR RRs in the reverse zone\n" |
107 |
"ip6.arpa.\n\n" |
108 |
|
109 |
"Updated in 2015 to conform to ISO C 2011.\n\n" |
110 |
|
111 |
"Copyright (C) 2003 Trond Endrestøl <Trond.Endrestol@ximalas.info>\n\n" |
112 |
|
113 |
"This program is free software; you can redistribute it and/or modify\n" |
114 |
"it under the terms of the GNU General Public License as published by\n" |
115 |
"the Free Software Foundation; either version 2 of the License, or\n" |
116 |
"(at your option) any later version.\n\n" |
117 |
|
118 |
"This program is distributed in the hope that it will be useful,\n" |
119 |
"but WITHOUT ANY WARRANTY; without even the implied warranty of\n" |
120 |
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" |
121 |
"GNU General Public License for more details.\n\n" |
122 |
|
123 |
"You should have received a copy of the GNU General Public License\n" |
124 |
"along with this program; if not, write to the Free Software\n" |
125 |
"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.\n", |
126 |
argv0); |
127 |
|
128 |
exit(EXIT_SUCCESS); |
129 |
} /* Version */ |
130 |
|
131 |
int ConstructMAC(const char *argvi, unsigned char *MAC); |
132 |
void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64); |
133 |
void ConstructModEUI64(const unsigned char * const EUI64, unsigned char * const ModEUI64); |
134 |
|
135 |
void PrintMAC(const unsigned char * const MAC); |
136 |
void PrintEUI64(const unsigned char * const EUI64); |
137 |
void PrintModEUI64(const unsigned char * const EUI64); |
138 |
void PrintEUI64_InterfaceID(const unsigned char * const EUI64); |
139 |
void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64); |
140 |
//void PrintEUI64_IP6_INT(const unsigned char * const EUI64); |
141 |
|
142 |
void TransformMAC(const char * const argv0, const char * const argvi) |
143 |
{ |
144 |
unsigned char MAC[6], EUI64[8], ModEUI64[8]; |
145 |
|
146 |
if (ConstructMAC(argvi, MAC)) { |
147 |
fprintf(stderr, "%s: invalid MAC address: %s\n", argv0, argvi); |
148 |
return; |
149 |
} |
150 |
|
151 |
ConstructEUI64(MAC, EUI64); |
152 |
ConstructModEUI64(EUI64, ModEUI64); |
153 |
|
154 |
PrintMAC(MAC); |
155 |
PrintEUI64(EUI64); |
156 |
PrintModEUI64(ModEUI64); |
157 |
PrintEUI64_InterfaceID(ModEUI64); |
158 |
PrintEUI64_IP6_ARPA(ModEUI64); |
159 |
//PrintEUI64_IP6_INT(ModEUI64); |
160 |
} /* TransformMAC() */ |
161 |
|
162 |
int ConstructMAC(const char *argvi, unsigned char * MAC) |
163 |
{ |
164 |
unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble); |
165 |
|
166 |
int ReturnValue = EXIT_SUCCESS, NumDigits = 0; |
167 |
size_t i = 0; |
168 |
unsigned char MSNybble, LSNybble; |
169 |
|
170 |
while (*argvi) { |
171 |
if (isxdigit(*argvi)) { |
172 |
NumDigits++; |
173 |
MSNybble = (unsigned char)*argvi++; |
174 |
|
175 |
if (!isxdigit(*argvi)) { |
176 |
break; |
177 |
} |
178 |
|
179 |
NumDigits++; |
180 |
LSNybble = (unsigned char)*argvi; |
181 |
|
182 |
MAC[i++] = ConstructHexByte(MSNybble, LSNybble); |
183 |
} |
184 |
|
185 |
argvi++; |
186 |
} |
187 |
|
188 |
if (NumDigits != 12) |
189 |
ReturnValue = EXIT_FAILURE; |
190 |
|
191 |
return ReturnValue; |
192 |
} /* ConstructMAC() */ |
193 |
|
194 |
unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble); |
195 |
|
196 |
unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble) |
197 |
{ |
198 |
unsigned char Byte; |
199 |
|
200 |
MSNybble = (unsigned char)toupper(MSNybble); |
201 |
LSNybble = (unsigned char)toupper(LSNybble); |
202 |
|
203 |
if (MSNybble >= 'A') { |
204 |
MSNybble = 0x0A + MSNybble - 'A'; |
205 |
} |
206 |
else { |
207 |
MSNybble -= '0'; |
208 |
} |
209 |
|
210 |
if (LSNybble >= 'A') { |
211 |
LSNybble = 0x0A + LSNybble - 'A'; |
212 |
} |
213 |
else { |
214 |
LSNybble -= '0'; |
215 |
} |
216 |
|
217 |
Byte = (unsigned char)((MSNybble << 4) | LSNybble); |
218 |
|
219 |
return Byte; |
220 |
} /* ConstructHexByte() */ |
221 |
|
222 |
void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64) |
223 |
{ |
224 |
EUI64[0] = MAC[0]; |
225 |
EUI64[1] = MAC[1]; |
226 |
EUI64[2] = MAC[2]; |
227 |
EUI64[3] = 0xFF; |
228 |
EUI64[4] = 0xFF; |
229 |
EUI64[5] = MAC[3]; |
230 |
EUI64[6] = MAC[4]; |
231 |
EUI64[7] = MAC[5]; |
232 |
} /* ConstructEUI64() */ |
233 |
|
234 |
void InvertUniversalLocalBit(unsigned char * const EUI64); |
235 |
|
236 |
void ConstructModEUI64(const unsigned char * const EUI64, unsigned char * const ModEUI64) |
237 |
{ |
238 |
ModEUI64[0] = EUI64[0]; |
239 |
ModEUI64[1] = EUI64[1]; |
240 |
ModEUI64[2] = EUI64[2]; |
241 |
ModEUI64[3] = EUI64[3]; |
242 |
ModEUI64[4] = 0xFE; |
243 |
ModEUI64[5] = EUI64[5]; |
244 |
ModEUI64[6] = EUI64[6]; |
245 |
ModEUI64[7] = EUI64[7]; |
246 |
|
247 |
InvertUniversalLocalBit(ModEUI64); |
248 |
} /* ConstructModEUI64() */ |
249 |
|
250 |
void InvertUniversalLocalBit(unsigned char * const EUI64) |
251 |
{ |
252 |
if (EUI64[0] & 0x02) |
253 |
EUI64[0] &= ~0x02; |
254 |
else |
255 |
EUI64[0] |= 0x02; |
256 |
} /* InvertUniversalLocalBit() */ |
257 |
|
258 |
void PrintMAC(const unsigned char * const MAC) |
259 |
{ |
260 |
printf("MAC:\t\t%02X:%02X:%02X:%02X:%02X:%02X\n", |
261 |
MAC[0], MAC[1], MAC[2], MAC[3], MAC[4], MAC[5]); |
262 |
} /* PrintMAC() */ |
263 |
|
264 |
void PrintEUI64(const unsigned char * const EUI64) |
265 |
{ |
266 |
printf("EUI-64:\t\t%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", |
267 |
EUI64[0], EUI64[1], EUI64[2], EUI64[3], |
268 |
EUI64[4], EUI64[5], EUI64[6], EUI64[7]); |
269 |
} /* PrintEUI64() */ |
270 |
|
271 |
void PrintModEUI64(const unsigned char * const EUI64) |
272 |
{ |
273 |
printf("Mod. EUI-64:\t%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", |
274 |
EUI64[0], EUI64[1], EUI64[2], EUI64[3], |
275 |
EUI64[4], EUI64[5], EUI64[6], EUI64[7]); |
276 |
} /* PrintModEUI64() */ |
277 |
|
278 |
void PrintEUI64_InterfaceID(const unsigned char * const EUI64) |
279 |
{ |
280 |
printf("Interface ID:\t::%02x%02x:%02x%02x:%02x%02x:%02x%02x\n", |
281 |
EUI64[0], EUI64[1], EUI64[2], EUI64[3], |
282 |
EUI64[4], EUI64[5], EUI64[6], EUI64[7]); |
283 |
} /* PrintEUI64_InterfaceID() */ |
284 |
|
285 |
void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64) |
286 |
{ |
287 |
// printf("ip6.arpa:\t\\[x%02X%02X%02X%02X%02X%02X%02X%02X/64]\n", |
288 |
// EUI64[0], EUI64[1], EUI64[2], EUI64[3], |
289 |
// EUI64[4], EUI64[5], EUI64[6], EUI64[7]); |
290 |
|
291 |
printf("ip6.arpa/64:\t%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x\n", |
292 |
EUI64[7] & 0x0F, EUI64[7] >> 4, |
293 |
EUI64[6] & 0x0F, EUI64[6] >> 4, |
294 |
EUI64[5] & 0x0F, EUI64[5] >> 4, |
295 |
EUI64[4] & 0x0F, EUI64[4] >> 4, |
296 |
EUI64[3] & 0x0F, EUI64[3] >> 4, |
297 |
EUI64[2] & 0x0F, EUI64[2] >> 4, |
298 |
EUI64[1] & 0x0F, EUI64[1] >> 4, |
299 |
EUI64[0] & 0x0F, EUI64[0] >> 4); |
300 |
} /* PrintEUI64_IP6_ARPA() */ |
301 |
|
302 |
//void PrintEUI64_IP6_INT(const unsigned char * const EUI64) |
303 |
//{ |
304 |
// printf("ip6.int/64:\t%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x\n", |
305 |
// EUI64[7] & 0x0F, EUI64[7] >> 4, |
306 |
// EUI64[6] & 0x0F, EUI64[6] >> 4, |
307 |
// EUI64[5] & 0x0F, EUI64[5] >> 4, |
308 |
// EUI64[4] & 0x0F, EUI64[4] >> 4, |
309 |
// EUI64[3] & 0x0F, EUI64[3] >> 4, |
310 |
// EUI64[2] & 0x0F, EUI64[2] >> 4, |
311 |
// EUI64[1] & 0x0F, EUI64[1] >> 4, |
312 |
// EUI64[0] & 0x0F, EUI64[0] >> 4); |
313 |
//} /* PrintEUI64_IP6_INT() */ |
314 |
|
315 |
/* mac2eui64.c */ |