Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
       3             :  */
       4             : 
       5             : #include "net/mac_address.h"
       6             : 
       7             : #include <cstring>
       8             : #include <cstdio>
       9             : #if defined(__linux__)
      10             : # include <netinet/ether.h>
      11             : #endif
      12             : 
      13             : #include "base/parse_object.h"
      14             : 
      15             : using namespace std;
      16             : 
      17             : const MacAddress MacAddress::kZeroMac(0x0, 0x0, 0x0, 0x0, 0x0, 0x0);
      18             : const MacAddress MacAddress::kBroadcastMac(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
      19             : const MacAddress MacAddress::kMulticastMac(0x01, 0x00, 0x5E, 0, 0, 0);
      20             : 
      21    15446769 : MacAddress::MacAddress() {
      22    15446769 :     memset(&addr_, 0, sizeof(addr_));
      23    15446769 : }
      24             : 
      25       80186 : MacAddress::MacAddress(const uint8_t *data) {
      26       80186 :     memcpy(&addr_, data, sizeof(addr_));
      27       80186 : }
      28             : 
      29      347555 : bool MacAddress::IsZero() const {
      30      347555 :     return CompareTo(ZeroMac()) == 0;
      31             : }
      32             : 
      33     1012659 : bool MacAddress::IsBroadcast() const {
      34     1012659 :     return CompareTo(BroadcastMac()) == 0;
      35             : }
      36             : 
      37           0 : bool MacAddress::IsMulticast() const {
      38           0 :     return CompareTo(MulticastMac(), 3) == 0;
      39             : }
      40             : 
      41        3191 : MacAddress::MacAddress(unsigned int a, unsigned int b, unsigned int c,
      42        3191 :                        unsigned int d, unsigned int e, unsigned int f) {
      43        3191 :     u_int8_t *p = (u_int8_t *)&addr_;
      44             : 
      45        3191 :     p[0] = a; p[1] = b; p[2] = c; p[3] = d; p[4] = e; p[5] = f;
      46        3191 : }
      47             : 
      48         377 : MacAddress::MacAddress(const std::string &s,
      49         377 :                        boost::system::error_code *errorp) {
      50         377 :     *this = FromString(s, errorp);
      51         377 : }
      52             : 
      53     1198172 : string MacAddress::ToString() const {
      54             :     static char hexchars[] = {
      55             :         '0', '1', '2', '3', '4', '5', '6', '7',
      56             :         '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
      57             :     };
      58             :     char temp[32];
      59     1198172 :     const u_int8_t *addr = (u_int8_t *) &addr_;
      60     1198172 :     int tidx = 0;
      61     8387187 :     for (int bidx = 0; bidx < 6; ++bidx) {
      62     7189015 :         if (bidx != 0)
      63     5990846 :             temp[tidx++] = ':';
      64     7189015 :         temp[tidx++] = hexchars[(addr[bidx] >> 4) & 0x0F];
      65     7189015 :         temp[tidx++] = hexchars[addr[bidx] & 0x0F];
      66             :     }
      67     1198172 :     temp[tidx] = '\0';
      68     1198172 :     return temp;
      69             : }
      70             : 
      71       40850 : MacAddress MacAddress::FromString(const std::string &str,
      72             :                                   boost::system::error_code *errorp) {
      73             :     struct ether_addr a;
      74       40850 :     u_int8_t *p = (u_int8_t*)&a;
      75             :     char extra;
      76             : 
      77       40850 :     int ret = sscanf(str.c_str(), "%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx%c",
      78             :         &p[0], &p[1], &p[2], &p[3], &p[4], &p[5], &extra);
      79       40850 :     if ((size_t)ret != size() || strchr(str.c_str(), 'x') || strchr(str.c_str(), 'X')) {
      80         456 :         if (errorp != NULL)
      81         432 :             *errorp = make_error_code(boost::system::errc::invalid_argument);
      82         456 :         return MacAddress();
      83             :     }
      84       40394 :     return MacAddress(a);
      85             : }
      86             : 
      87    15762194 : int MacAddress::CompareTo(const MacAddress &rhs, int len) const {
      88    15762194 :     if (len == 0)
      89    15762341 :         return memcmp(&addr_, &rhs.addr_, sizeof(addr_));
      90           0 :     return memcmp(&addr_, &rhs.addr_, len);
      91             : }
      92             : 
      93      385421 : bool MacAddress::ToArray(u_int8_t *p, size_t s) const {
      94      385421 :     if (s < size())
      95           0 :         return false;
      96      385416 :     memcpy(p, &addr_, size());
      97      385403 :     return true;
      98             : }
      99             : 
     100          96 : MacAddress &MacAddress::operator=(const u_int8_t *c) {
     101          96 :     memcpy(&addr_, c, size());
     102          96 :     return *this;
     103             : }
     104             : 
     105           0 : MacAddress &MacAddress::operator=(const struct sockaddr *sa) {
     106           0 :     memcpy(&addr_, sa->sa_data, size());
     107           0 :     return *this;
     108             : }