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Revision 3 by trond, 2015-09-29T08:26:40Z Revision 4 by trond, 2015-09-29T08:31:02Z
# Line 1  Line 1 
1  /*  /*
2   mac2eui64.c   mac2eui64.c
3    
4   Conversion from the IEEE 802 MAC format to the IEEE EUI-64 format.   Conversion from the IEEE 802 MAC format to the IEEE EUI-64 format.
5   Displays values suitable for use as a 64 bit interface ID in A6 RRs.   Displays values suitable for use as a 64 bit interface ID in A6 RRs.
6   Also displayed are labels suitable for use with PTR RRs in the   Also displayed are labels suitable for use with PTR RRs in the
7   two defined reverse zones ip6.arpa (A6) and ip6.int (AAAA).   reverse zone ip6.arpa.
8    
9   Copyright (C) 2003 Trond Endrestøl <trond@ramstind.gtf.ol.no>   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   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   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   the Free Software Foundation; either version 2 of the License, or
16   (at your option) any later version.   (at your option) any later version.
17    
18   This program is distributed in the hope that it will be useful,   This program is distributed in the hope that it will be useful,
19   but WITHOUT ANY WARRANTY; without even the implied warranty of   but WITHOUT ANY WARRANTY; without even the implied warranty of
20   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21   GNU General Public License for more details.   GNU General Public License for more details.
22    
23   You should have received a copy of the GNU General Public License   You should have received a copy of the GNU General Public License
24   along with this program; if not, write to the Free Software   along with this program; if not, write to the Free Software
25   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
26    
27   $Ximalas$   $Ximalas$
28  */  */
29  #include <ctype.h>  #include <ctype.h>
30  #include <stdio.h>  #include <stdio.h>
31  #include <stdlib.h>  #include <stdlib.h>
32  #include <unistd.h>  #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)  int main(int argc, char **argv)
39  {  {
   void Usage(const char * const argv0, int ReturnValue);  
   void Version(const char * const argv0);  
   void TransformMAC(const char * const argv0, const char * const argvi);  
   
40    int c;    int c;
41    size_t i;    ssize_t i;
42    
43    opterr = 0;    opterr = 0;
44    while ((c = getopt(argc, argv, "hv")) != -1) {    while ((c = getopt(argc, argv, "hv")) != -1) {
45      switch (c) {      switch (c) {
46        case 'h':        case 'h':
47          Usage(argv[0], EXIT_SUCCESS);          Usage(argv[0], EXIT_SUCCESS);
48          break;          //break;
49    
50        case 'v':        case 'v':
51          Version(argv[0]);          Version(argv[0]);
52          break;          //break;
53    
54        case '?':        case '?':
55          fprintf(stderr, "%s: invalid option -%c\n", argv[0], optopt);          fprintf(stderr, "%s: invalid option -%c\n", argv[0], optopt);
56          break;          break;
57    
58        default:        default:
59          fprintf(stderr, "%s: something is dead wrong with getopt() or with this program\n", argv[0]);          fprintf(stderr, "%s: something is dead wrong with getopt() or with this program\n", argv[0]);
60          return EXIT_FAILURE;          return EXIT_FAILURE;
61          break;          //break;
62        }        }
63      }      }
64    
65    i = optind;    i = optind;
66    
67    if (i == argc)    if (i == argc)
68      Usage(argv[0], EXIT_FAILURE);      Usage(argv[0], EXIT_FAILURE);
69    
70    TransformMAC(argv[0], argv[i++]);    TransformMAC(argv[0], argv[i++]);
71    
72    while (i < argc) {    while (i < argc) {
73      puts("");      puts("");
74      TransformMAC(argv[0], argv[i++]);      TransformMAC(argv[0], argv[i++]);
75      }      }
76    
# Line 90  void Version(const char * const argv0) Line 92  void Version(const char * const argv0)
92            "  00:50:DA:2C:8F:55\n"            "  00:50:DA:2C:8F:55\n"
93            "  00-50-DA-2C-8F-55\n"            "  00-50-DA-2C-8F-55\n"
94            "  0050.DA2C.8F55\n"            "  0050.DA2C.8F55\n"
95            "  0050DA2C8F55\n",            "  0050DA2C8F55\n",
96            argv0);            argv0);
97    exit(ReturnValue);    exit(ReturnValue);
98  } /* Usage() */  } /* Usage() */
99    
100  void Version(const char * const argv0)  void Version(const char * const argv0)
101  {  {
102    printf("%s version 1.0\n\n"    printf("%s version 1.0\n\n"
103    
104           "Conversion from the IEEE 802 MAC format to the IEEE EUI-64 format.\n"           "Conversion from the IEEE 802 MAC format to the IEEE EUI-64 format.\n"
105           "Displays values suitable for use as a 64 bit interface ID in A6 RRs.\n"           "Displays values suitable for use as a 64 bit interface ID in A6 RRs.\n"
106           "Also displayed are labels suitable for use with PTR RRs in the\n"           "Also displayed are labels suitable for use with PTR RRs in the\n"
107           "two defined reverse zones ip6.arpa (A6) and ip6.int (AAAA).\n\n"           "reverse zone ip6.arpa.\n\n"
108    
109           "Copyright (C) 2003 Trond Endrestøl <trond@ramstind.gtf.ol.no>\n\n"           "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"           "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"           "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"           "the Free Software Foundation; either version 2 of the License, or\n"
116           "(at your option) any later version.\n\n"           "(at your option) any later version.\n\n"
117    
118           "This program is distributed in the hope that it will be useful,\n"           "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"           "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
120           "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"           "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
121           "GNU General Public License for more details.\n\n"           "GNU General Public License for more details.\n\n"
122    
123           "You should have received a copy of the GNU General Public License\n"           "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"           "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",           "Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.\n",
126           argv0);           argv0);
127    
128    exit(EXIT_SUCCESS);    exit(EXIT_SUCCESS);
129  } /* Version */  } /* Version */
130    
131  void TransformMAC(const char * const argv0, const char * const argvi)  int ConstructMAC(const char *argvi, unsigned char *MAC);
132  {  void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64);
133    int ConstructMAC(const char *argvi, unsigned char *MAC);  void InvertUniversalLocalBit(unsigned char * const EUI64);
   void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64);  
   void InvertUniversalLocalBit(unsigned char * const EUI64);  
134    
135    void PrintMAC(const unsigned char * const MAC);  void PrintMAC(const unsigned char * const MAC);
136    void PrintEUI64(const unsigned char * const EUI64);  void PrintEUI64(const unsigned char * const EUI64);
137    void PrintEUI64_InterfaceID(const unsigned char * const EUI64);  void PrintEUI64_InterfaceID(const unsigned char * const EUI64);
138    void PrintEUI64_IP6_INT(const unsigned char * const EUI64);  void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64);
139    void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64);  //void PrintEUI64_IP6_INT(const unsigned char * const EUI64);
140    
141    void TransformMAC(const char * const argv0, const char * const argvi)
142    {
143    unsigned char MAC[6], EUI64[8];    unsigned char MAC[6], EUI64[8];
144    
145    if (ConstructMAC(argvi, MAC)) {    if (ConstructMAC(argvi, MAC)) {
146      fprintf(stderr, "%s: invalid MAC address: %s\n", argv0, argvi);      fprintf(stderr, "%s: invalid MAC address: %s\n", argv0, argvi);
147      return;      return;
148      }      }
149    
150    ConstructEUI64(MAC, EUI64);    ConstructEUI64(MAC, EUI64);
151    
152    PrintMAC(MAC);    PrintMAC(MAC);
153    PrintEUI64(EUI64);    PrintEUI64(EUI64);
154    
155    /* Transform the EUI-64 address into    /* Transform the EUI-64 address into
156       the Modified EUI-64 address for use as       the Modified EUI-64 address for use as
157       the value for the interface ID */       the value for the interface ID */
158    InvertUniversalLocalBit(EUI64);    InvertUniversalLocalBit(EUI64);
159    
160    PrintEUI64_InterfaceID(EUI64);    PrintEUI64_InterfaceID(EUI64);
   PrintEUI64_IP6_INT(EUI64);  
161    PrintEUI64_IP6_ARPA(EUI64);    PrintEUI64_IP6_ARPA(EUI64);
162      //PrintEUI64_IP6_INT(EUI64);
163  } /* TransformMAC() */  } /* TransformMAC() */
164    
165  int ConstructMAC(const char *argvi, unsigned char * MAC)  int ConstructMAC(const char *argvi, unsigned char * MAC)
166  {  {
167    unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble);    unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble);
168    
169    int ReturnValue = EXIT_SUCCESS, NumDigits = 0;    int ReturnValue = EXIT_SUCCESS, NumDigits = 0;
170    size_t i = 0;    size_t i = 0;
171    unsigned char MSNybble, LSNybble;    unsigned char MSNybble, LSNybble;
172    
173    while (*argvi) {    while (*argvi) {
174      if (isxdigit(*argvi)) {      if (isxdigit(*argvi)) {
175        NumDigits++;        NumDigits++;
176        MSNybble = *argvi++;        MSNybble = (unsigned char)*argvi++;
177    
178        if (!isxdigit(*argvi)) {        if (!isxdigit(*argvi)) {
179          break;          break;
180          }          }
181    
182        NumDigits++;        NumDigits++;
183        LSNybble = *argvi;        LSNybble = (unsigned char)*argvi;
184    
185        MAC[i++] = ConstructHexByte(MSNybble, LSNybble);        MAC[i++] = ConstructHexByte(MSNybble, LSNybble);
186        }        }
187    
188      argvi++;      argvi++;
189      }      }
190    
191    if (NumDigits != 12)    if (NumDigits != 12)
192      ReturnValue = EXIT_FAILURE;      ReturnValue = EXIT_FAILURE;
193    
194    return ReturnValue;    return ReturnValue;
195  } /* ConstructMAC() */  } /* ConstructMAC() */
196    
197    unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble);
198    
199  unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble)  unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble)
200  {  {
201    unsigned char Byte;    unsigned char Byte;
202    
203    MSNybble = toupper(MSNybble);    MSNybble = (unsigned char)toupper(MSNybble);
204    LSNybble = toupper(LSNybble);    LSNybble = (unsigned char)toupper(LSNybble);
205    
206    if (MSNybble >= 'A') {    if (MSNybble >= 'A') {
207      MSNybble = 0x0A + MSNybble - 'A';      MSNybble = 0x0A + MSNybble - 'A';
208      }      }
209    else {    else {
210      MSNybble -= '0';      MSNybble -= '0';
211      }      }
212    
213    if (LSNybble >= 'A') {    if (LSNybble >= 'A') {
214      LSNybble = 0x0A + LSNybble - 'A';      LSNybble = 0x0A + LSNybble - 'A';
215      }      }
216    else {    else {
217      LSNybble -= '0';      LSNybble -= '0';
218      }      }
219    
220    Byte = (MSNybble << 4) | LSNybble;    Byte = (unsigned char)((MSNybble << 4) | LSNybble);
221    
222    return Byte;    return Byte;
223  } /* ConstructHexByte() */  } /* ConstructHexByte() */
224    
225  void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64)  void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64)
226  {  {
227    EUI64[0] = MAC[0];    EUI64[0] = MAC[0];
228    EUI64[1] = MAC[1];    EUI64[1] = MAC[1];
229    EUI64[2] = MAC[2];    EUI64[2] = MAC[2];
230    EUI64[3] = 0xFF;    EUI64[3] = 0xFF;
231    EUI64[4] = 0xFE;    EUI64[4] = 0xFE;
232    EUI64[5] = MAC[3];    EUI64[5] = MAC[3];
233    EUI64[6] = MAC[4];    EUI64[6] = MAC[4];
234    EUI64[7] = MAC[5];    EUI64[7] = MAC[5];
235  } /* ConstructEUI64() */  } /* ConstructEUI64() */
# Line 244  void PrintEUI64_InterfaceID(const unsigned char * cons Line 250  void PrintEUI64_InterfaceID(const unsigned char * cons
250    
251  void PrintEUI64(const unsigned char * const EUI64)  void PrintEUI64(const unsigned char * const EUI64)
252  {  {
253    printf("EUI-64:\t\t%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",    printf("EUI-64:\t\t%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
254           EUI64[0], EUI64[1], EUI64[2], EUI64[3],           EUI64[0], EUI64[1], EUI64[2], EUI64[3],
255           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);
256  } /* PrintEUI64() */  } /* PrintEUI64() */
257    
258  void PrintEUI64_InterfaceID(const unsigned char * const EUI64)  void PrintEUI64_InterfaceID(const unsigned char * const EUI64)
259  {  {
260    printf("Interface ID:\t::%02x%02x:%02x%02x:%02x%02x:%02x%02x\n",    printf("Interface ID:\t::%02x%02x:%02x%02x:%02x%02x:%02x%02x\n",
261           EUI64[0], EUI64[1], EUI64[2], EUI64[3],           EUI64[0], EUI64[1], EUI64[2], EUI64[3],
262           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);
263  } /* PrintEUI64_InterfaceID() */  } /* PrintEUI64_InterfaceID() */
264    
265  void PrintEUI64_IP6_INT(const unsigned char * const EUI64)  void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64)
266  {  {
267    printf("ip6.int/64:\t%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x\n",  //  printf("ip6.arpa:\t\\[x%02X%02X%02X%02X%02X%02X%02X%02X/64]\n",
268    //         EUI64[0], EUI64[1], EUI64[2], EUI64[3],
269    //         EUI64[4], EUI64[5], EUI64[6], EUI64[7]);
270    
271      printf("ip6.arpa/64:\t%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x\n",
272           EUI64[7] & 0x0F, EUI64[7] >> 4,           EUI64[7] & 0x0F, EUI64[7] >> 4,
273           EUI64[6] & 0x0F, EUI64[6] >> 4,           EUI64[6] & 0x0F, EUI64[6] >> 4,
274           EUI64[5] & 0x0F, EUI64[5] >> 4,           EUI64[5] & 0x0F, EUI64[5] >> 4,
275           EUI64[4] & 0x0F, EUI64[4] >> 4,           EUI64[4] & 0x0F, EUI64[4] >> 4,
276           EUI64[3] & 0x0F, EUI64[3] >> 4,           EUI64[3] & 0x0F, EUI64[3] >> 4,
277           EUI64[2] & 0x0F, EUI64[2] >> 4,           EUI64[2] & 0x0F, EUI64[2] >> 4,
278           EUI64[1] & 0x0F, EUI64[1] >> 4,           EUI64[1] & 0x0F, EUI64[1] >> 4,
279           EUI64[0] & 0x0F, EUI64[0] >> 4);           EUI64[0] & 0x0F, EUI64[0] >> 4);
 } /* PrintEUI64_IP6_INT() */  
   
 void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64)  
 {  
   printf("ip6.arpa:\t\\[x%02X%02X%02X%02X%02X%02X%02X%02X/64]\n",  
          EUI64[0], EUI64[1], EUI64[2], EUI64[3],  
          EUI64[4], EUI64[5], EUI64[6], EUI64[7]);  
280  } /* PrintEUI64_IP6_ARPA() */  } /* PrintEUI64_IP6_ARPA() */
281    
282    //void PrintEUI64_IP6_INT(const unsigned char * const EUI64)
283    //{
284    //  printf("ip6.int/64:\t%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x\n",
285    //         EUI64[7] & 0x0F, EUI64[7] >> 4,
286    //         EUI64[6] & 0x0F, EUI64[6] >> 4,
287    //         EUI64[5] & 0x0F, EUI64[5] >> 4,
288    //         EUI64[4] & 0x0F, EUI64[4] >> 4,
289    //         EUI64[3] & 0x0F, EUI64[3] >> 4,
290    //         EUI64[2] & 0x0F, EUI64[2] >> 4,
291    //         EUI64[1] & 0x0F, EUI64[1] >> 4,
292    //         EUI64[0] & 0x0F, EUI64[0] >> 4);
293    //} /* PrintEUI64_IP6_INT() */
294    
295  /* mac2eui64.c */  /* mac2eui64.c */

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