/[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    
# Line 101  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           "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    
# Line 130  void ConstructEUI64(const unsigned char * const MAC, u Line 130  void ConstructEUI64(const unsigned char * const MAC, u
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);
# Line 148  void TransformMAC(const char * const argv0, const char Line 149  void TransformMAC(const char * const argv0, const char
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)
# Line 228  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 255  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",

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