/[mac2eui64]/trunk/mac2eui64.c
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Revision 3 by trond, 2015-09-29T08:26:40Z Revision 5 by trond, 2015-09-29T09:12:20Z
# 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 (modified) 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 AAAA and A6 RRs.
6   Also displayed are labels suitable for use with PTR RRs in the   Also displays labels suitable for use with PTR RRs in the reverse zone
7   two defined reverse zones ip6.arpa (A6) and ip6.int (AAAA).   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
# Line 29  Line 31 
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);
# Line 56  int main(int argc, char **argv) Line 58  int main(int argc, char **argv)
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    
# Line 99  void Version(const char * const argv0) Line 101  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 (modified) 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 AAAA and A6 RRs.\n"
106           "Also displayed are labels suitable for use with PTR RRs in the\n"           "Also displays labels suitable for use with PTR RRs in the reverse zone\n"
107           "two defined reverse zones ip6.arpa (A6) and ip6.int (AAAA).\n\n"           "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"
# Line 124  void Version(const char * const argv0) Line 128  void Version(const char * const argv0)
128    exit(EXIT_SUCCESS);    exit(EXIT_SUCCESS);
129  } /* Version */  } /* 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)  void TransformMAC(const char * const argv0, const char * const argvi)
143  {  {
144    int ConstructMAC(const char *argvi, unsigned char *MAC);    unsigned char MAC[6], EUI64[8], ModEUI64[8];
   void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64);  
   void InvertUniversalLocalBit(unsigned char * const EUI64);  
145    
   void PrintMAC(const unsigned char * const MAC);  
   void PrintEUI64(const unsigned char * const EUI64);  
   void PrintEUI64_InterfaceID(const unsigned char * const EUI64);  
   void PrintEUI64_IP6_INT(const unsigned char * const EUI64);  
   void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64);  
   
   unsigned char MAC[6], EUI64[8];  
   
146    if (ConstructMAC(argvi, MAC)) {    if (ConstructMAC(argvi, MAC)) {
147      fprintf(stderr, "%s: invalid MAC address: %s\n", argv0, argvi);      fprintf(stderr, "%s: invalid MAC address: %s\n", argv0, argvi);
148      return;      return;
149      }      }
150    
151    ConstructEUI64(MAC, EUI64);    ConstructEUI64(MAC, EUI64);
152      ConstructModEUI64(EUI64, ModEUI64);
153    
154    PrintMAC(MAC);    PrintMAC(MAC);
155    PrintEUI64(EUI64);    PrintEUI64(EUI64);
156      PrintModEUI64(ModEUI64);
157    /* Transform the EUI-64 address into    PrintEUI64_InterfaceID(ModEUI64);
158       the Modified EUI-64 address for use as    PrintEUI64_IP6_ARPA(ModEUI64);
159       the value for the interface ID */    //PrintEUI64_IP6_INT(ModEUI64);
   InvertUniversalLocalBit(EUI64);  
   
   PrintEUI64_InterfaceID(EUI64);  
   PrintEUI64_IP6_INT(EUI64);  
   PrintEUI64_IP6_ARPA(EUI64);  
160  } /* TransformMAC() */  } /* TransformMAC() */
161    
162  int ConstructMAC(const char *argvi, unsigned char * MAC)  int ConstructMAC(const char *argvi, unsigned char * MAC)
# Line 169  int ConstructMAC(const char *argvi, unsigned char * MA Line 170  int ConstructMAC(const char *argvi, unsigned char * MA
170    while (*argvi) {    while (*argvi) {
171      if (isxdigit(*argvi)) {      if (isxdigit(*argvi)) {
172        NumDigits++;        NumDigits++;
173        MSNybble = *argvi++;        MSNybble = (unsigned char)*argvi++;
174    
175        if (!isxdigit(*argvi)) {        if (!isxdigit(*argvi)) {
176          break;          break;
177          }          }
178    
179        NumDigits++;        NumDigits++;
180        LSNybble = *argvi;        LSNybble = (unsigned char)*argvi;
181    
182        MAC[i++] = ConstructHexByte(MSNybble, LSNybble);        MAC[i++] = ConstructHexByte(MSNybble, LSNybble);
183        }        }
# Line 190  int ConstructMAC(const char *argvi, unsigned char * MA Line 191  int ConstructMAC(const char *argvi, unsigned char * MA
191    return ReturnValue;    return ReturnValue;
192  } /* ConstructMAC() */  } /* ConstructMAC() */
193    
194    unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble);
195    
196  unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble)  unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble)
197  {  {
198    unsigned char Byte;    unsigned char Byte;
199    
200    MSNybble = toupper(MSNybble);    MSNybble = (unsigned char)toupper(MSNybble);
201    LSNybble = toupper(LSNybble);    LSNybble = (unsigned char)toupper(LSNybble);
202    
203    if (MSNybble >= 'A') {    if (MSNybble >= 'A') {
204      MSNybble = 0x0A + MSNybble - 'A';      MSNybble = 0x0A + MSNybble - 'A';
# Line 211  unsigned char ConstructHexByte(unsigned char MSNybble, Line 214  unsigned char ConstructHexByte(unsigned char MSNybble,
214      LSNybble -= '0';      LSNybble -= '0';
215      }      }
216    
217    Byte = (MSNybble << 4) | LSNybble;    Byte = (unsigned char)((MSNybble << 4) | LSNybble);
218    
219    return Byte;    return Byte;
220  } /* ConstructHexByte() */  } /* ConstructHexByte() */
# Line 222  void ConstructEUI64(const unsigned char * const MAC, u Line 225  void ConstructEUI64(const unsigned char * const MAC, u
225    EUI64[1] = MAC[1];    EUI64[1] = MAC[1];
226    EUI64[2] = MAC[2];    EUI64[2] = MAC[2];
227    EUI64[3] = 0xFF;    EUI64[3] = 0xFF;
228    EUI64[4] = 0xFE;    EUI64[4] = 0xFF;
229    EUI64[5] = MAC[3];    EUI64[5] = MAC[3];
230    EUI64[6] = MAC[4];    EUI64[6] = MAC[4];
231    EUI64[7] = MAC[5];    EUI64[7] = MAC[5];
232  } /* ConstructEUI64() */  } /* 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)  void InvertUniversalLocalBit(unsigned char * const EUI64)
251  {  {
252    if (EUI64[0] & 0x02)    if (EUI64[0] & 0x02)
# Line 249  void PrintEUI64(const unsigned char * const EUI64) Line 268  void PrintEUI64(const unsigned char * const EUI64)
268           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);
269  } /* PrintEUI64() */  } /* 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)  void PrintEUI64_InterfaceID(const unsigned char * const EUI64)
279  {  {
280    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",
# Line 256  void PrintEUI64_InterfaceID(const unsigned char * cons Line 282  void PrintEUI64_InterfaceID(const unsigned char * cons
282           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);
283  } /* PrintEUI64_InterfaceID() */  } /* PrintEUI64_InterfaceID() */
284    
285  void PrintEUI64_IP6_INT(const unsigned char * const EUI64)  void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64)
286  {  {
287    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",
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,           EUI64[7] & 0x0F, EUI64[7] >> 4,
293           EUI64[6] & 0x0F, EUI64[6] >> 4,           EUI64[6] & 0x0F, EUI64[6] >> 4,
294           EUI64[5] & 0x0F, EUI64[5] >> 4,           EUI64[5] & 0x0F, EUI64[5] >> 4,
# Line 267  void PrintEUI64_IP6_INT(const unsigned char * const EU Line 297  void PrintEUI64_IP6_INT(const unsigned char * const EU
297           EUI64[2] & 0x0F, EUI64[2] >> 4,           EUI64[2] & 0x0F, EUI64[2] >> 4,
298           EUI64[1] & 0x0F, EUI64[1] >> 4,           EUI64[1] & 0x0F, EUI64[1] >> 4,
299           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]);  
300  } /* PrintEUI64_IP6_ARPA() */  } /* 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 */  /* mac2eui64.c */

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