Timer working. MAC address in string variable.

1 files changed, 23 insertions, 0 deletions

diff --git a/gethwaddr.c b/gethwaddr.c
new file mode 100644
index 0000000..2ca2fbb
--- /dev/null
+++ b/gethwaddr.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>    
+#include <sys/socket.h>
+#include <net/if.h>
+#include <string.h>
+
+int main( int argc, char *argv[] )
+{
+    int s;
+    struct ifreq ifr;
+
+    s = socket(PF_INET, SOCK_DGRAM, 0);
+    memset(&ifr, 0x00, sizeof(ifr));
+    strcpy(ifr.ifr_name, "eth0");
+    ioctl(s, SIOCGIFHWADDR, &ifr);
+    close(s);
+
+    unsigned char mac_address[6];
+    sprintf(mac_address,"%.2X%.2X%.2X%.2X%.2X%.2X", (unsigned char) ifr.ifr_hwaddr.sa_data[0], (unsigned char) ifr.ifr_hwaddr.sa_data[1], (unsigned char) ifr.ifr_hwaddr.sa_data[2], (unsigned char) ifr.ifr_hwaddr.sa_data[3], (unsigned char) ifr.ifr_hwaddr.sa_data[4], (unsigned char) ifr.ifr_hwaddr.sa_data[5]);  
+    printf("%s", mac_address);
+
+}