src/eui/Eui48.h

   1 #ifndef _SQUID_EUI_EUI48_H
   2 #define _SQUID_EUI_EUI48_H
   3
   4 #include "config.h"
   5
   6 #if USE_SQUID_EUI
   7
   8 /* EUI-48 is 6 bytes. */
   9 #define SZ_EUI48_BUF 6
  10
  11 class IpAddress;
  12
  13 #if HAVE_CSTRING
  14 #include <cstring>
  15 #endif
  16
  17 class Eui48
  18 {
  19
  20 public:
  21     Eui48() { clear(); };
  22     Eui48(const Eui48 &t) { memcpy(this, &t, sizeof(Eui48)); };
  23     ~Eui48() {};
  24
  25     const unsigned char *get(void);
  26
  27     bool set(const char *src, const int len) {
  28         if (len > SZ_EUI48_BUF) return false;
  29         if (len < SZ_EUI48_BUF) clear();
  30         memcpy(eui, src, len);
  31         return true;
  32     };
  33
  34     void clear() { memset(eui, 0, SZ_EUI48_BUF); };
  35
  36     /**
  37      * Decode an ascii representation of an EUI-48 ethernet address.
  38      *
  39      * \param asc   ASCII representation of an ethernet (MAC) address
  40      * \param eth   Binary representation of the ethernet address
  41      * \retval false        Conversion to binary failed. Invalid address
  42      * \retval true         Conversion completed successfully
  43      */
  44     bool decode(const char *asc);
  45
  46     /**
  47      * Encode an ascii representation (asc) of an EUI-48 ethernet address.
  48      *
  49      * \param buf   Buffer to receive ASCII representation of an ethernet (MAC) address
  50      * \param len   Length of the buffer space available. Must be >= SZ_EUI48_BUF bytes or the encode will fail.
  51      * \param eui   Binary representation of the ethernet address
  52      * \retval false        Conversion to ASCII failed.
  53      * \retval true         Conversion completed successfully.
  54      */
  55     bool encode(char *buf, const int len);
  56
  57     // lookup an EUI-48 / MAC address via ARP
  58     bool lookup(IpAddress &c);
  59
  60 private:
  61     unsigned char eui[SZ_EUI48_BUF];
  62 };
  63
  64 #endif /* USE_SQUID_EUI */
  65 #endif /* _SQUID_EUI_EUI48_H */