1 files changed, 67 insertions, 0 deletions
diff --git a/src/openvpn/lladdr.c b/src/openvpn/lladdr.c
new file mode 100644
index 0000000..57f447b
--- /dev/null
+++ b/src/openvpn/lladdr.c
@@ -0,0 +1,67 @@
+/*
+ * Support routine for configuring link layer address 
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+#include "syshead.h"
+#include "error.h"
+#include "misc.h"
+
+int set_lladdr(const char *ifname, const char *lladdr,
+		const struct env_set *es)
+{
+  struct argv argv = argv_new ();
+  int r;
+
+  if (!ifname || !lladdr)
+    return -1;
+  
+#if defined(TARGET_LINUX)
+#ifdef ENABLE_IPROUTE
+  argv_printf (&argv,
+		    "%s link set addr %s dev %s",
+		    iproute_path, lladdr, ifname);
+#else
+  argv_printf (&argv,
+		    "%s %s hw ether %s",
+		    IFCONFIG_PATH,
+		    ifname, lladdr);
+#endif
+#elif defined(TARGET_SOLARIS)
+  argv_printf (&argv,
+		    "%s %s ether %s",
+		    IFCONFIG_PATH,
+		    ifname, lladdr);
+#elif defined(TARGET_OPENBSD)
+  argv_printf (&argv,
+		    "%s %s lladdr %s",
+		    IFCONFIG_PATH,
+		    ifname, lladdr);
+#elif defined(TARGET_DARWIN)
+  argv_printf (&argv,
+		    "%s %s lladdr %s",
+		    IFCONFIG_PATH,
+		    ifname, lladdr);
+#elif defined(TARGET_FREEBSD)
+  argv_printf (&argv,
+		    "%s %s ether %s",
+		    IFCONFIG_PATH,
+		    ifname, lladdr);
+#else
+      msg (M_WARN, "Sorry, but I don't know how to configure link layer addresses on this operating system.");
+      return -1;
+#endif
+
+  argv_msg (M_INFO, &argv);
+  r = openvpn_execve_check (&argv, es, M_WARN, "ERROR: Unable to set link layer address.");
+  if (r)
+    msg (M_INFO, "TUN/TAP link layer address set to %s", lladdr);
+
+  argv_reset (&argv);
+  return r;
+}