Function in C to return the MAC Address:
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/* Returns the MAC Address Params: int iNetType - 0: ethernet, 1: Wifi char chMAC[6] - MAC Address in binary format Returns: 0: success -1: Failure */ int getMACAddress(int iNetType, char chMAC[6]) { struct ifreq ifr; int sock; char *ifname=NULL; if (!iNetType) { ifname="eth0"; /* Ethernet */ } else { ifname="wlan0"; /* Wifi */ } sock=socket(AF_INET,SOCK_DGRAM,0); strcpy( ifr.ifr_name, ifname ); ifr.ifr_addr.sa_family = AF_INET; if (ioctl( sock, SIOCGIFHWADDR, &ifr ) < 0) { return -1; } memcpy(chMAC, ifr.ifr_hwaddr.sa_data, 6) close(sock); return 0; } |
Function in C to return the IP Address:
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/* Returns the interface IP Address Params: int iNetType - 0: ethernet, 1: Wifi char *chIP - IP Address string Return: 0: success / -1: Failure */ int getIpAddress(int iNetType, char chIP[16]) { struct ifreq ifr; int sock = 0; sock = socket(AF_INET, SOCK_DGRAM, 0); if(iNetType == 0) { strcpy(ifr.ifr_name, "eth0"); } else { strcpy(ifr.ifr_name, "wlan0"); } if (ioctl(sock, SIOCGIFADDR, &ifr) < 0) { strcpy(chIP, "0.0.0.0"); return -1; } sprintf(chIP, "%s", inet_ntoa(((struct sockaddr_in *) &(ifr.ifr_addr))->sin_addr)); close(sock); return 0; } |
