Re: MAC Address of machine.

FROM : Pierre-Olivier Latour
DATE : Mon Nov 18 04:48:15 2002

Whoa, this is some pretty heavy stuff ;) Try rather this:
http://developer.apple.com/samplecode/Sample_Code/Networking/GetMACAddressSa
mple.htm
http://developer.apple.com/samplecode/Sample_Code/Networking/GetPrimaryMACAd
dress.htm

More specifically:
http://developer.apple.com/samplecode/Sample_Code/Networking/GetPrimaryMACAd
dress/GetPrimaryMACAddress.c.htm

Once you've removed all the comments, it should be way shorter and it'll
teach you a bit of the IOKit ;)

> Hi,
>
> This is from some C stuff I found either on this list or elsewhere on the
> 'net. (Sorry, I like to give credit, but I just don't recall the source of
> this.)
>
> Terence
>
> #define MAXADDRS    32
> char *hw_addrs[MAXADDRS];
>
> void GetHWAddresses()
> {
>  struct ifconf ifc;
>  struct ifreq *ifr;
>  int i, sockfd;
>  char buffer[BUFFERSIZE], *cp, *cplim;
>  char temp[80];
>
>  for (i=0; i<MAXADDRS; ++i)
>  {
>    hw_addrs[i] = NULL;
>  }
>
>  sockfd = socket(AF_INET, SOCK_DGRAM, 0);
>  if (sockfd < 0)
>  {
>    perror("socket failed");
>    return;
>  }
>
>  ifc.ifc_len = BUFFERSIZE;
>  ifc.ifc_buf = buffer;
>
>  if (ioctl(sockfd, SIOCGIFCONF, (char *)&ifc) < 0)
>  {
>    perror("ioctl error");
>    close(sockfd);
>  return;
>  }
>
>  ifr = ifc.ifc_req;
>
>  cplim = buffer + ifc.ifc_len;
>
>  for (cp=buffer; cp < cplim; )
>  {
>    ifr = (struct ifreq *)cp;
>  if (ifr->ifr_addr.sa_family == AF_LINK)
>  {
>    struct sockaddr_dl *sdl = (struct sockaddr_dl *)&ifr->ifr_addr;
> int a,b,c,d,e,f;
> int i;
>
> strcpy(temp, (char *)ether_ntoa(LLADDR(sdl)));
> sscanf(temp, "%x:%x:%x:%x:%x:%x", &a, &b, &c, &d, &e, &f);
>        sprintf(temp, "%02X:%02X:%02X:%02X:%02X:%02X",a,b,c,d,e,f);
>
> for (i=0; i<MAXADDRS; ++i)
> {
>    if ((if_names[i] != NULL) && (strcmp(ifr->ifr_name, if_names[i]) ==
> 0))
> {
>  if (hw_addrs[i] == NULL)
>  {
>      hw_addrs[i] = (char *)malloc(strlen(temp)+1);
>  strcpy(hw_addrs[i], temp);
>  break;
>  }
> }
> }
>  }
>    cp += sizeof(ifr->ifr_name) + max(sizeof(ifr->ifr_addr),
> ifr->ifr_addr.sa_len);
>  }
>
>  close(sockfd);
> }
>
>
>
>
>> From: "Peter Hudson" <<email_removed>>
>> Reply-To: <email_removed>
>> To: <email_removed>
>> Subject: MAC Address of machine.
>> Date: Sun, 17 Nov 2002 23:27:03 +0000
>>
>> I need to get the MAC address of the machine that my application is running
>> on.  I figured there must be a way in Cocoa to do it.
>>
>> Any help much appreciated.
>>
>>
>> Peter Hudson
>> _______________________________________________
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>
>
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_____________________________________________________________

Pierre-Olivier Latour              <email_removed>
Palo Alto, USA                      http://www.pol-online.net
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