/[mac2eui64]/trunk/mac2eui64.c
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Revision 4 by trond, 2015-09-29T08:31:02Z 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   reverse zone ip6.arpa.   ip6.arpa.
8    
9   Updated in 2015 to conform to ISO C 2011.   Updated in 2015 to conform to ISO C 2011.
10    
11   Copyright (C) 2003 Trond Endrestøl <Trond.Endrestol@ximalas.info>   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    
# Line 89  void Usage(const char * const argv0, int ReturnValue) Line 89  void Usage(const char * const argv0, int ReturnValue)
89            "MAC addresses must consist of 12 hex digits with leading zeroes.\n"            "MAC addresses must consist of 12 hex digits with leading zeroes.\n"
90            "Any punctuation is ignored. Examples of valid MAC addresses:\n\n"            "Any punctuation is ignored. Examples of valid MAC addresses:\n\n"
91    
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 (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           "reverse zone ip6.arpa.\n\n"           "ip6.arpa.\n\n"
108    
109           "Updated in 2015 to conform to ISO C 2011.\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"           "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  int ConstructMAC(const char *argvi, unsigned char *MAC);  int ConstructMAC(const char *argvi, unsigned char *MAC);
132  void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64);  void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64);
133  void InvertUniversalLocalBit(unsigned char * const EUI64);  void ConstructModEUI64(const unsigned char * const EUI64, unsigned char * const ModEUI64);
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 PrintModEUI64(const unsigned char * const EUI64);
138  void PrintEUI64_InterfaceID(const unsigned char * const EUI64);  void PrintEUI64_InterfaceID(const unsigned char * const EUI64);
139  void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64);  void PrintEUI64_IP6_ARPA(const unsigned char * const EUI64);
140  //void PrintEUI64_IP6_INT(const unsigned char * const EUI64);  //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    unsigned char MAC[6], EUI64[8];    unsigned char MAC[6], EUI64[8], ModEUI64[8];
145    
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_ARPA(EUI64);  
   //PrintEUI64_IP6_INT(EUI64);  
160  } /* TransformMAC() */  } /* TransformMAC() */
161    
162  int ConstructMAC(const char *argvi, unsigned char * MAC)  int ConstructMAC(const char *argvi, unsigned char * MAC)
163  {  {
164    unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble);    unsigned char ConstructHexByte(unsigned char MSNybble, unsigned char LSNybble);
165    
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;
169    
170    while (*argvi) {    while (*argvi) {
171      if (isxdigit(*argvi)) {      if (isxdigit(*argvi)) {
172        NumDigits++;        NumDigits++;
173        MSNybble = (unsigned char)*argvi++;        MSNybble = (unsigned char)*argvi++;
174    
# Line 216  unsigned char ConstructHexByte(unsigned char MSNybble, Line 213  unsigned char ConstructHexByte(unsigned char MSNybble,
213    else {    else {
214      LSNybble -= '0';      LSNybble -= '0';
215      }      }
216    
217    Byte = (unsigned char)((MSNybble << 4) | LSNybble);    Byte = (unsigned char)((MSNybble << 4) | LSNybble);
218    
219    return Byte;    return Byte;
220  } /* ConstructHexByte() */  } /* ConstructHexByte() */
221    
222  void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64)  void ConstructEUI64(const unsigned char * const MAC, unsigned char * const EUI64)
223  {  {
224    EUI64[0] = MAC[0];    EUI64[0] = MAC[0];
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)
253      EUI64[0] &= ~0x02;      EUI64[0] &= ~0x02;
254    else    else
255      EUI64[0] |= 0x02;      EUI64[0] |= 0x02;
256  } /* InvertUniversalLocalBit() */  } /* InvertUniversalLocalBit() */
257    
258  void PrintMAC(const unsigned char * const MAC)  void PrintMAC(const unsigned char * const MAC)
259  {  {
260    printf("MAC:\t\t%02X:%02X:%02X:%02X:%02X:%02X\n",    printf("MAC:\t\t%02X:%02X:%02X:%02X:%02X:%02X\n",
261           MAC[0], MAC[1], MAC[2], MAC[3], MAC[4], MAC[5]);           MAC[0], MAC[1], MAC[2], MAC[3], MAC[4], MAC[5]);
262  } /* PrintMAC() */  } /* PrintMAC() */
263    
264  void PrintEUI64(const unsigned char * const EUI64)  void PrintEUI64(const unsigned char * const EUI64)
265  {  {
266    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",
267           EUI64[0], EUI64[1], EUI64[2], EUI64[3],           EUI64[0], EUI64[1], EUI64[2], EUI64[3],
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",
281           EUI64[0], EUI64[1], EUI64[2], EUI64[3],           EUI64[0], EUI64[1], EUI64[2], EUI64[3],
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_ARPA(const unsigned char * const EUI64)  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",  //  printf("ip6.arpa:\t\\[x%02X%02X%02X%02X%02X%02X%02X%02X/64]\n",
288  //         EUI64[0], EUI64[1], EUI64[2], EUI64[3],  //         EUI64[0], EUI64[1], EUI64[2], EUI64[3],
289  //         EUI64[4], EUI64[5], EUI64[6], EUI64[7]);  //         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",    printf("ip6.arpa/64:\t%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x\n",


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