X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Fupap.c;h=53d4a3ce09638a510cba12195246cd349bde1733;hb=875d9641d05b4fcb7e186f784c801962bb2670e5;hp=c59f0ba1fac30753d9475dd8bc8ba81685f4b261;hpb=0c7a998d2528a7f39af06e5c1eaaaad8ba24dc4b;p=ppp.git

diff --git a/pppd/upap.c b/pppd/upap.c
index c59f0ba..53d4a3c 100644
--- a/pppd/upap.c
+++ b/pppd/upap.c
@@ -18,7 +18,7 @@
  */
 
 #ifndef lint
-static char rcsid[] = "$Id: upap.c,v 1.16 1999/04/28 02:45:44 paulus Exp $";
+static const char rcsid[] = "$Id: upap.c,v 1.18 1999/08/12 04:25:25 paulus Exp $";
 #endif
 
 /*
@@ -437,13 +437,15 @@ upap_rauthack(u, inp, id, len)
 	return;
     }
     GETCHAR(msglen, inp);
-    len -= sizeof (u_char);
-    if (len < msglen) {
-	UPAPDEBUG(("pap_rauthack: rcvd short packet."));
-	return;
+    if (msglen > 0) {
+	len -= sizeof (u_char);
+	if (len < msglen) {
+	    UPAPDEBUG(("pap_rauthack: rcvd short packet."));
+	    return;
+	}
+	msg = (char *) inp;
+	PRINTMSG(msg, msglen);
     }
-    msg = (char *) inp;
-    PRINTMSG(msg, msglen);
 
     u->us_clientstate = UPAPCS_OPEN;
 
@@ -475,13 +477,15 @@ upap_rauthnak(u, inp, id, len)
 	return;
     }
     GETCHAR(msglen, inp);
-    len -= sizeof (u_char);
-    if (len < msglen) {
-	UPAPDEBUG(("pap_rauthnak: rcvd short packet."));
-	return;
+    if (msglen > 0) {
+	len -= sizeof (u_char);
+	if (len < msglen) {
+	    UPAPDEBUG(("pap_rauthnak: rcvd short packet."));
+	    return;
+	}
+	msg = (char *) inp;
+	PRINTMSG(msg, msglen);
     }
-    msg = (char *) inp;
-    PRINTMSG(msg, msglen);
 
     u->us_clientstate = UPAPCS_BADAUTH;