+long GetMacAddrSys ( u_char *addr)
+{
+#ifdef _WIN32
+ WSADATA WinsockData;
+ if (WSAStartup(MAKEWORD(2, 0), &WinsockData) != 0) {
+ fprintf(stderr, "This program requires Winsock 2.x!\n");
+ return -1;
+ }
+
+ HINSTANCE m_hInst;
+ pSnmpExtensionInit m_Init;
+ pSnmpExtensionInitEx m_InitEx;
+ pSnmpExtensionQuery m_Query;
+ pSnmpExtensionTrap m_Trap;
+ HANDLE PollForTrapEvent;
+ AsnObjectIdentifier SupportedView;
+ UINT OID_ifEntryType[] = {
+ 1, 3, 6, 1, 2, 1, 2, 2, 1, 3
+ };
+ UINT OID_ifEntryNum[] = {
+ 1, 3, 6, 1, 2, 1, 2, 1
+ };
+ UINT OID_ipMACEntAddr[] = {
+ 1, 3, 6, 1, 2, 1, 2, 2, 1, 6
+ }; //, 1 ,6 };
+ AsnObjectIdentifier MIB_ifMACEntAddr =
+ { sizeof(OID_ipMACEntAddr) / sizeof(UINT), OID_ipMACEntAddr };
+ AsnObjectIdentifier MIB_ifEntryType = {
+ sizeof(OID_ifEntryType) / sizeof(UINT), OID_ifEntryType
+ };
+ AsnObjectIdentifier MIB_ifEntryNum = {
+ sizeof(OID_ifEntryNum) / sizeof(UINT), OID_ifEntryNum
+ };
+ RFC1157VarBindList varBindList;
+ RFC1157VarBind varBind[2];
+ AsnInteger errorStatus;
+ AsnInteger errorIndex;
+ AsnObjectIdentifier MIB_NULL = {
+ 0, 0
+ };
+ int ret;
+ int dtmp;
+ int i = 0, j = 0;
+ BOOL found = FALSE;
+ char TempEthernet[13];
+ m_Init = NULL;
+ m_InitEx = NULL;
+ m_Query = NULL;
+ m_Trap = NULL;
+
+ /* Load the SNMP dll and get the addresses of the functions
+ necessary */
+ m_hInst = LoadLibrary("inetmib1.dll");
+ if (m_hInst < (HINSTANCE) HINSTANCE_ERROR) {
+ m_hInst = NULL;
+ return -1;
+ }
+ m_Init =
+ (pSnmpExtensionInit) GetProcAddress(m_hInst, "SnmpExtensionInit");
+ m_InitEx =
+ (pSnmpExtensionInitEx) GetProcAddress(m_hInst,
+ "SnmpExtensionInitEx");
+ m_Query =
+ (pSnmpExtensionQuery) GetProcAddress(m_hInst,
+ "SnmpExtensionQuery");
+ m_Trap =
+ (pSnmpExtensionTrap) GetProcAddress(m_hInst, "SnmpExtensionTrap");
+ m_Init(GetTickCount(), &PollForTrapEvent, &SupportedView);
+
+ /* Initialize the variable list to be retrieved by m_Query */
+ varBindList.list = varBind;
+ varBind[0].name = MIB_NULL;
+ varBind[1].name = MIB_NULL;
+
+ /* Copy in the OID to find the number of entries in the
+ Inteface table */
+ varBindList.len = 1; /* Only retrieving one item */
+ SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryNum);
+ ret =
+ m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
+ &errorIndex);
+ printf("# of adapters in this system : %i\n",
+ varBind[0].value.asnValue.number); varBindList.len = 2;
+
+ /* Copy in the OID of ifType, the type of interface */
+ SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType);
+
+ /* Copy in the OID of ifPhysAddress, the address */
+ SNMP_oidcpy(&varBind[1].name, &MIB_ifMACEntAddr);
+
+ do {
+
+ /* Submit the query. Responses will be loaded into varBindList.
+ We can expect this call to succeed a # of times corresponding
+ to the # of adapters reported to be in the system */
+ ret =
+ m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus,
+ &errorIndex); if (!ret) ret = 1;
+
+ else
+ /* Confirm that the proper type has been returned */
+ ret =
+ SNMP_oidncmp(&varBind[0].name, &MIB_ifEntryType,
+ MIB_ifEntryType.idLength); if (!ret) {
+ j++;
+ dtmp = varBind[0].value.asnValue.number;
+ printf("Interface #%i type : %i\n", j, dtmp);
+
+ /* Type 6 describes ethernet interfaces */
+ if (dtmp == 6) {
+
+ /* Confirm that we have an address here */
+ ret =
+ SNMP_oidncmp(&varBind[1].name, &MIB_ifMACEntAddr,
+ MIB_ifMACEntAddr.idLength);
+ if ((!ret)
+ && (varBind[1].value.asnValue.address.stream != NULL)) {
+ if (
+ (varBind[1].value.asnValue.address.stream[0] ==
+ 0x44)
+ && (varBind[1].value.asnValue.address.stream[1] ==
+ 0x45)
+ && (varBind[1].value.asnValue.address.stream[2] ==
+ 0x53)
+ && (varBind[1].value.asnValue.address.stream[3] ==
+ 0x54)
+ && (varBind[1].value.asnValue.address.stream[4] ==
+ 0x00)) {
+
+ /* Ignore all dial-up networking adapters */
+ printf("Interface #%i is a DUN adapter\n", j);
+ continue;
+ }
+ if (
+ (varBind[1].value.asnValue.address.stream[0] ==
+ 0x00)
+ && (varBind[1].value.asnValue.address.stream[1] ==
+ 0x00)
+ && (varBind[1].value.asnValue.address.stream[2] ==
+ 0x00)
+ && (varBind[1].value.asnValue.address.stream[3] ==
+ 0x00)
+ && (varBind[1].value.asnValue.address.stream[4] ==
+ 0x00)
+ && (varBind[1].value.asnValue.address.stream[5] ==
+ 0x00)) {
+
+ /* Ignore NULL addresses returned by other network
+ interfaces */
+ printf("Interface #%i is a NULL address\n", j);
+ continue;
+ }
+ //sprintf((char*)addr, "%02x%02x%02x%02x%02x%02x",
+ // varBind[1].value.asnValue.address.stream[0],
+ // varBind[1].value.asnValue.address.stream[1],
+ // varBind[1].value.asnValue.address.stream[2],
+ // varBind[1].value.asnValue.address.stream[3],
+ // varBind[1].value.asnValue.address.stream[4],
+ // varBind[1].value.asnValue.address.stream[5]);
+ memcpy( addr, varBind[1].value.asnValue.address.stream, 6);
+ //printf("MAC Address of interface #%i: %s\n", j, addr);
+ }
+ }
+ }
+ } while (!ret); /* Stop only on an error. An error will occur
+ when we go exhaust the list of interfaces to
+ be examined */
+ //getch();
+
+ /* Free the bindings */
+ SNMP_FreeVarBind(&varBind[0]);
+ SNMP_FreeVarBind(&varBind[1]);
+ return 0;
+#endif //_WIN32
+
+/* implementation for Linux */
+#ifdef __linux__
+ struct ifreq ifr;
+ struct ifreq *IFR;
+ struct ifconf ifc;
+ char buf[1024];
+ int s, i;
+ int ok = 0;
+
+ s = socket(AF_INET, SOCK_DGRAM, 0);
+ if (s==-1) {
+ return -1;
+ }
+
+ ifc.ifc_len = sizeof(buf);
+ ifc.ifc_buf = buf;
+ ioctl(s, SIOCGIFCONF, &ifc);
+
+ IFR = ifc.ifc_req;
+ for (i = ifc.ifc_len / sizeof(struct ifreq); --i >= 0; IFR++) {
+
+ strcpy(ifr.ifr_name, IFR->ifr_name);
+ if (ioctl(s, SIOCGIFFLAGS, &ifr) == 0) {
+ if (! (ifr.ifr_flags & IFF_LOOPBACK)) {
+ if (ioctl(s, SIOCGIFHWADDR, &ifr) == 0) {
+ ok = 1;
+ break;
+ }
+ }
+ }
+ }
+
+ close(s);
+ if (ok) {
+ bcopy( ifr.ifr_hwaddr.sa_data, addr, 6);
+ }
+ else {
+ return -1;
+ }
+ return 0;
+#endif