Initial RADIUS support (using libradius). See the man page for

details.  Compiling with -DNORADIUS (the default for `release')
removes support.

TODO: The functionality in libradius::rad_send_request() needs
      to be supplied as a set of routines so that ppp doesn't
      have to wait indefinitely for the radius server(s).  Instead,
      we need to get a descriptor back, select() on the descriptor,
      and ask libradius to service it when necessary.
      For now, ppp blocks SIGALRM while in rad_send_request(), so
      it misses PAP/CHAP retries & timeouts if they occur.

      Only PAP is functional.  When CHAP is attempted, libradius
      complains that no User-Password has been specified... rfc2138
      says that it *mustn't* be used for CHAP :-(

Sponsored by: Internet Business Solutions Ltd., Switzerland

1 files changed, 14 insertions, 3 deletions

diff --git a/usr.sbin/ppp/tun.c b/usr.sbin/ppp/tun.c
index 6d97e38..d8edbd8 100644
--- a/usr.sbin/ppp/tun.c
+++ b/usr.sbin/ppp/tun.c
@@ -23,10 +23,10 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: tun.c,v 1.9 1998/08/09 16:41:01 brian Exp $
+ *	$Id: tun.c,v 1.10 1998/10/22 02:32:50 brian Exp $
  */
 
-#include <sys/types.h>
+#include <sys/param.h>
 #include <sys/socket.h>		/* For IFF_ defines */
 #include <net/if.h>		/* For IFF_ defines */
 #include <netinet/in.h>
@@ -57,6 +57,9 @@
 #include "ccp.h"
 #include "link.h"
 #include "mp.h"
+#ifndef NORADIUS
+#include "radius.h"
+#endif
 #include "bundle.h"
 #include "tun.h"
 
@@ -67,7 +70,15 @@ tun_configure(struct bundle *bundle, int mtu)
 
   memset(&info, '\0', sizeof info);
   info.type = IFT_PPP;
-  info.mtu = mtu;
+#ifndef NORADIUS
+  if (bundle->radius.valid && bundle->radius.mtu && bundle->radius.mtu < mtu) {
+    log_Printf(LogLCP, "Reducing MTU to radius value %lu\n",
+               bundle->radius.mtu);
+    info.mtu = bundle->radius.mtu;
+  } else
+#endif
+    info.mtu = mtu;
+  
   info.baudrate = bundle->ifSpeed;
 #ifdef __OpenBSD__                                           
   info.flags = IFF_UP|IFF_POINTOPOINT;