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353cd6a22a
GNU MAC Changer is an utility that makes the maniputation of MAC addresses of network interfaces easier. WWW: http://www.gnu.org/software/macchanger PR: 187363 Submitted by: clutton@zoho.com
124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
--- src/netinfo.c 2014-01-01 19:10:25.000000000 +0200
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+++ src/netinfo.c 2014-10-22 05:49:50.129320393 +0300
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@@ -23,14 +23,31 @@
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* USA
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*/
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+#ifdef HAVE_CONFIG_H
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+# include <config.h>
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+#endif
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+
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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+#include <sys/socket.h>
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#include <sys/ioctl.h>
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-#include <linux/ethtool.h>
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-#include <linux/sockios.h>
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+#include <net/if.h>
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+#include <ifaddrs.h>
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+#include <net/ethernet.h>
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+
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+#if defined(HAVE_IF_PACKET)
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+# include <linux/if_packet.h>
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+#elif defined(HAVE_IF_DL)
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+# include <net/if_dl.h>
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+#endif
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+
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+#if defined(HAVE_ETHTOOL)
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+# include <linux/ethtool.h>
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+# include <linux/sockios.h>
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+#endif
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#include "netinfo.h"
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@@ -49,7 +66,7 @@
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strncpy (new->dev.ifr_name, device, sizeof(new->dev.ifr_name));
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new->dev.ifr_name[sizeof(new->dev.ifr_name)-1] = '\0';
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- if (ioctl(new->sock, SIOCGIFHWADDR, &new->dev) < 0) {
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+ if (if_nametoindex(device) == 0) {
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perror ("[ERROR] Set device name");
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free(new);
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return NULL;
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@@ -66,29 +83,55 @@
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free(net);
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}
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-
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mac_t *
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mc_net_info_get_mac (const net_info_t *net)
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{
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- int i;
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- mac_t *new = (mac_t *) malloc (sizeof(mac_t));
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+ int i;
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+ mac_t *mac = (mac_t *) malloc (sizeof(mac_t));
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+ u_char *lladr;
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- for (i=0; i<6; i++) {
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- new->byte[i] = net->dev.ifr_hwaddr.sa_data[i] & 0xFF;
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- }
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+ struct ifaddrs *ifap, *ifa;
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+ struct sockaddr_ll *sdl;
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- return new;
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-}
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+ if (getifaddrs(&ifap) == 0) {
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+ for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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+
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+ sdl = (struct sockaddr_ll *) ifa->ifa_addr;
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+
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+ if (strcmp(ifa->ifa_name, net->dev.ifr_name) != 0)
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+ continue;
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+ if (!sdl && sdl->sll_family != AF_PACKET)
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+ continue;
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+
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+ lladr = (u_char *) LLADDR(sdl);
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+ for (i=0; i<6; i++)
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+ mac->byte[i] = lladr[i] & 0xFF;
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+ break;
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+ }
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+ freeifaddrs(ifap);
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+ } else
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+ perror("getifaddrs");
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+
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+ return mac;
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+}
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int
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mc_net_info_set_mac (net_info_t *net, const mac_t *mac)
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{
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int i;
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+#if defined(HAVE_ETHTOOL)
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+ if (ioctl(net->sock, SIOCGIFHWADDR, &net->dev) < 0) {
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+ perror ("[ERROR] Set ifreq structure");
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+ return -1;
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+ }
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+#elif defined(HAVE_SOCKADDR_SA_LEN)
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+ net->dev.ifr_addr.sa_family = AF_PACKET;
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+ net->dev.ifr_addr.sa_len = ETHER_ADDR_LEN;
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+#endif
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- for (i=0; i<6; i++) {
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+ for (i=0; i<6; i++)
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net->dev.ifr_hwaddr.sa_data[i] = mac->byte[i];
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- }
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if (ioctl(net->sock, SIOCSIFHWADDR, &net->dev) < 0) {
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perror ("[ERROR] Could not change MAC: interface up or insufficient permissions");
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@@ -98,6 +141,7 @@
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return 0;
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}
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+#if defined(HAVE_ETHTOOL)
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mac_t *
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mc_net_info_get_permanent_mac (const net_info_t *net)
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{
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@@ -126,3 +170,4 @@
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free(epa);
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return newmac;
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}
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+#endif
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