/[mac2eui64]/trunk/mac2eui64.c
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Revision 3 by trond, 2015-09-29T08:26:40Z Revision 6 by trond, 2015-10-12T07:53:50Z
# 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    unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble);
163    
164  int ConstructMAC(const char *argvi, unsigned char * MAC)  int ConstructMAC(const char *argvi, unsigned char * MAC)
165  {  {
   unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble);  
   
166    int ReturnValue = EXIT_SUCCESS, NumDigits = 0;    int ReturnValue = EXIT_SUCCESS, NumDigits = 0;
167    size_t i = 0;    size_t i = 0;
168    unsigned char MSNybble, LSNybble;    unsigned char MSNybble, LSNybble;
# 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 194  unsigned char ConstructHexByte(unsigned char MSNybble, Line 195  unsigned char ConstructHexByte(unsigned char MSNybble,
195  {  {
196    unsigned char Byte;    unsigned char Byte;
197    
198    MSNybble = toupper(MSNybble);    MSNybble = (unsigned char)toupper(MSNybble);
199    LSNybble = toupper(LSNybble);    LSNybble = (unsigned char)toupper(LSNybble);
200    
201    if (MSNybble >= 'A') {    if (MSNybble >= 'A') {
202      MSNybble = 0x0A + MSNybble - 'A';      MSNybble = 0x0A + MSNybble - 'A';
# Line 211  unsigned char ConstructHexByte(unsigned char MSNybble, Line 212  unsigned char ConstructHexByte(unsigned char MSNybble,
212      LSNybble -= '0';      LSNybble -= '0';
213      }      }
214    
215    Byte = (MSNybble << 4) | LSNybble;    Byte = (unsigned char)((MSNybble << 4) | LSNybble);
216    
217    return Byte;    return Byte;
218  } /* ConstructHexByte() */  } /* ConstructHexByte() */
# Line 222  void ConstructEUI64(const unsigned char * const MAC, u Line 223  void ConstructEUI64(const unsigned char * const MAC, u
223    EUI64[1] = MAC[1];    EUI64[1] = MAC[1];
224    EUI64[2] = MAC[2];    EUI64[2] = MAC[2];
225    EUI64[3] = 0xFF;    EUI64[3] = 0xFF;
226    EUI64[4] = 0xFE;    EUI64[4] = 0xFF;
227    EUI64[5] = MAC[3];    EUI64[5] = MAC[3];
228    EUI64[6] = MAC[4];    EUI64[6] = MAC[4];
229    EUI64[7] = MAC[5];    EUI64[7] = MAC[5];
230  } /* ConstructEUI64() */  } /* ConstructEUI64() */
231    
232    void InvertUniversalLocalBit(unsigned char * const EUI64);
233    
234    void ConstructModEUI64(const unsigned char * const EUI64, unsigned char * const ModEUI64)
235    {
236      ModEUI64[0] = EUI64[0];
237      ModEUI64[1] = EUI64[1];
238      ModEUI64[2] = EUI64[2];
239      ModEUI64[3] = EUI64[3];
240      ModEUI64[4] = 0xFE;
241      ModEUI64[5] = EUI64[5];
242      ModEUI64[6] = EUI64[6];
243      ModEUI64[7] = EUI64[7];
244    
245      InvertUniversalLocalBit(ModEUI64);
246    } /* ConstructModEUI64() */
247    
248  void InvertUniversalLocalBit(unsigned char * const EUI64)  void InvertUniversalLocalBit(unsigned char * const EUI64)
249  {  {
250    if (EUI64[0] & 0x02)    if (EUI64[0] & 0x02)
# Line 249  void PrintEUI64(const unsigned char * const EUI64) Line 266  void PrintEUI64(const unsigned char * const EUI64)
266           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);
267  } /* PrintEUI64() */  } /* PrintEUI64() */
268    
269    void PrintModEUI64(const unsigned char * const EUI64)
270    {
271      printf("Mod. EUI-64:\t%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
272             EUI64[0], EUI64[1], EUI64[2], EUI64[3],
273             EUI64[4], EUI64[5], EUI64[6], EUI64[7]);
274    } /* PrintModEUI64() */
275    
276  void PrintEUI64_InterfaceID(const unsigned char * const EUI64)  void PrintEUI64_InterfaceID(const unsigned char * const EUI64)
277  {  {
278    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 280  void PrintEUI64_InterfaceID(const unsigned char * cons
280           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);           EUI64[4], EUI64[5], EUI64[6], EUI64[7]);
281  } /* PrintEUI64_InterfaceID() */  } /* PrintEUI64_InterfaceID() */
282    
283  void PrintEUI64_IP6_INT(const unsigned char * const EUI64)  void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64)
284  {  {
285    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",
286    //         EUI64[0], EUI64[1], EUI64[2], EUI64[3],
287    //         EUI64[4], EUI64[5], EUI64[6], EUI64[7]);
288    
289      printf("ip6.arpa/64:\t%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x\n",
290           EUI64[7] & 0x0F, EUI64[7] >> 4,           EUI64[7] & 0x0F, EUI64[7] >> 4,
291           EUI64[6] & 0x0F, EUI64[6] >> 4,           EUI64[6] & 0x0F, EUI64[6] >> 4,
292           EUI64[5] & 0x0F, EUI64[5] >> 4,           EUI64[5] & 0x0F, EUI64[5] >> 4,
# Line 267  void PrintEUI64_IP6_INT(const unsigned char * const EU Line 295  void PrintEUI64_IP6_INT(const unsigned char * const EU
295           EUI64[2] & 0x0F, EUI64[2] >> 4,           EUI64[2] & 0x0F, EUI64[2] >> 4,
296           EUI64[1] & 0x0F, EUI64[1] >> 4,           EUI64[1] & 0x0F, EUI64[1] >> 4,
297           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]);  
298  } /* PrintEUI64_IP6_ARPA() */  } /* PrintEUI64_IP6_ARPA() */
299    
300    //void PrintEUI64_IP6_INT(const unsigned char * const EUI64)
301    //{
302    //  printf("ip6.int/64:\t%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x\n",
303    //         EUI64[7] & 0x0F, EUI64[7] >> 4,
304    //         EUI64[6] & 0x0F, EUI64[6] >> 4,
305    //         EUI64[5] & 0x0F, EUI64[5] >> 4,
306    //         EUI64[4] & 0x0F, EUI64[4] >> 4,
307    //         EUI64[3] & 0x0F, EUI64[3] >> 4,
308    //         EUI64[2] & 0x0F, EUI64[2] >> 4,
309    //         EUI64[1] & 0x0F, EUI64[1] >> 4,
310    //         EUI64[0] & 0x0F, EUI64[0] >> 4);
311    //} /* PrintEUI64_IP6_INT() */
312    
313  /* mac2eui64.c */  /* mac2eui64.c */

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