v22

[android-x86/external-wireless-tools.git] / wireless_tools / macaddr.c

diff --git a/wireless_tools/macaddr.c b/wireless_tools/macaddr.c
new file mode 100644 (file)
index 0000000..8c5a93a
--- /dev/null
+++ b/wireless_tools/macaddr.c
@@ -0,0 +1,53 @@
+/*
+ *     macaddr
+ *
+ *     Program to return the MAC address of an Ethernet
+ *     adapter.  This was written to help configure the
+ *     adapter based on the MAC address rather than the
+ *     name.
+ *
+ *     Version 1.0     Eric Dittman    2001-10-19
+ *
+ *     This is released unther the GPL license.
+ */
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <linux/in.h>
+#include <linux/socket.h>
+#include <linux/if.h>
+
+int main(int argc, char** argv) {
+
+       int devsock;
+       struct ifreq ifbuffer;
+       int i;
+
+       if (argc != 2) {
+               printf("Usage: macaddr interface\n");
+               exit(1);
+       }
+
+       devsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+
+       if (devsock == -1) {
+               printf("Failed opening socket\n");
+               exit (1);
+       }
+
+       memset(&ifbuffer, 0, sizeof(ifbuffer));
+       strcpy(ifbuffer.ifr_name, argv[1]);
+       if (ioctl(devsock, SIOCGIFHWADDR, &ifbuffer) == -1) {
+               printf("There is no MACADDR for %s\n", argv[1]);
+               exit(1);
+       }
+       close (devsock);
+
+       for (i = 0; i < IFHWADDRLEN; i++)
+               printf("%02X", (unsigned char) ifbuffer.ifr_ifru.ifru_hwaddr.sa_data[i]);
+       printf("\n");
+
+       exit(0);
+
+}