+char g_temp[STRING_SIZE]="";
+char* readmac(char *card) {
+ fprintf(flog,"Enter readmac... NIC: %s\n", card); // #### Debug ####
+ FILE *fp;
+ char temp[STRING_SIZE], mac[20];
+
+ sprintf(temp,"/sys/class/net/%s/address",card);
+ if( (fp = fopen(temp, "r")) == NULL ) {
+ fprintf(flog,"Couldn't open: %s\n",temp);
+ return NULL;
+ }
+ fgets(mac, 18, fp);
+ strtok(mac,"\n");
+ fclose(fp);
+ strcpy(g_temp, mac);
+ return g_temp;
+}
+
+char* find_nic4mac(char *findmac) {
+ fprintf(flog,"Enter find_name4nic... Search for %s\n", findmac); // #### Debug ####
+ #define SYSDIR "/sys/class/net"
+
+ DIR *dir;
+ struct dirent *dirzeiger;
+ char temp[STRING_SIZE], temp2[STRING_SIZE];
+
+ if((dir=opendir(SYSDIR)) == NULL) {
+ fprintf(flog,"Fehler bei opendir (find_name4nic) ...\n");
+ return NULL;
+ }
+
+ sprintf(temp, "");
+ while((dirzeiger=readdir(dir)) != NULL) {
+ if(*((*dirzeiger).d_name) != '.' & strcmp(((*dirzeiger).d_name), "lo") != 0) {
+ sprintf(temp2, "%s", readmac((*dirzeiger).d_name) );
+ if (strcmp(findmac, temp2) == 0) {
+ sprintf(temp,"%s", (*dirzeiger).d_name);
+ fprintf(flog,"MAC: %s is NIC: %s\n", findmac, temp); // #### Debug ####
+ break;
+ }
+ }
+ }
+
+ if(closedir(dir) == -1) fprintf(flog,"Fehler beim schliessen von %s\n", SYSDIR);
+ strcpy(g_temp, temp);
+ return g_temp;
+}
+