+ logger(DEBUG_ALWAYS, LOG_INFO, "%s is a %s", device, device_info);
+
+ if(ifr.ifr_flags & IFF_TAP) {
+ struct ifreq ifr_mac = {};
+ if(!ioctl(device_fd, SIOCGIFHWADDR, &ifr_mac))
+ memcpy(mymac.x, ifr_mac.ifr_hwaddr.sa_data, ETH_ALEN);
+ else
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Could not get MAC address of %s: %s", device, strerror(errno));
+ }
+
+ return true;
+}
+
+static void close_device(void) {
+ close(device_fd);
+ device_fd = -1;
+
+ free(type); type = NULL;
+ free(device); device = NULL;
+ free(iface); iface = NULL;
+ device_info = NULL;
+}
+
+static bool read_packet(vpn_packet_t *packet) {
+ int inlen;
+
+ switch(device_type) {
+ case DEVICE_TYPE_TUN:
+ inlen = read(device_fd, DATA(packet) + 10, MTU - 10);
+
+ if(inlen <= 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s",
+ device_info, device, strerror(errno));
+ return false;
+ }
+
+ memset(DATA(packet), 0, 12);
+ packet->len = inlen + 10;
+ break;
+ case DEVICE_TYPE_TAP:
+ inlen = read(device_fd, DATA(packet), MTU);
+
+ if(inlen <= 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s",
+ device_info, device, strerror(errno));
+ return false;
+ }
+
+ packet->len = inlen;
+ break;
+ default:
+ abort();
+ }
+
+ logger(DEBUG_TRAFFIC, LOG_DEBUG, "Read packet of %d bytes from %s", packet->len,
+ device_info);
+
+ return true;