Added --lladdr option to specify the link layer (MAC) address

for the tap interface on non-Windows platforms (Roy Marples).


git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@1012 e7ae566f-a301-0410-adde-c780ea21d3b5

1 files changed, 58 insertions, 0 deletions

diff --git a/lladdr.c b/lladdr.c
new file mode 100644
index 0000000..d6fb0a6
--- /dev/null
+++ b/lladdr.c
@@ -0,0 +1,58 @@
+/*
+ * Support routine for configuring link layer address 
+ */
+
+#ifdef WIN32
+#include "config-win32.h"
+#else
+#include "config.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)
+{
+  char cmd[256];
+
+  if (!ifname || !lladdr)
+    return -1;
+  
+#if defined(TARGET_LINUX)
+#ifdef CONFIG_FEATURE_IPROUTE
+  openvpn_snprintf (cmd, sizeof (cmd),
+		    IPROUTE_PATH " link set addr %s dev %s",
+		    lladdr, ifname);
+#else
+  openvpn_snprintf (cmd, sizeof (cmd),
+		    IFCONFIG_PATH " %s hw ether %s",
+		    ifname, lladdr);
+#endif
+#elif defined(TARGET_SOLARIS)
+  openvpn_snprintf (cmd, sizeof (cmd),
+		    IFCONFIG_PATH " %s ether %s",
+		    ifname, lladdr);
+#elif defined(TARGET_OPENBSD)
+  openvpn_snprintf (cmd, sizeof (cmd),
+		    IFCONFIG_PATH " %s lladdr %s",
+		    ifname, lladdr);
+#elif defined(TARGET_DARWIN)
+  openvpn_snprintf (cmd, sizeof (cmd),
+		    IFCONFIG_PATH " %s lladdr %s",
+		    ifname, lladdr);
+#elif defined(TARGET_FREEBSD)
+  openvpn_snprintf (cmd, sizeof (cmd),
+		    IFCONFIG_PATH " %s ether %s",
+		    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
+
+  int r = system_check (cmd, es, M_WARN, "ERROR: Unable to set link layer address.");
+  if (r)
+    msg (M_INFO, "TUN/TAP link layer address set to %s", lladdr);
+  return r;
+}