X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Fupap.c;h=4e5c045a71ce344a465d0804586e24164c4469ae;hb=33c08b5f78f41aab4d1172e66db7c1afe21b5f1c;hp=b59d13031ad9e6c7f0d5f224bfae23f6c586afb2;hpb=7a4dc0ff500aaa176a41965d8d4ad15a97a70904;p=ppp.git

diff --git a/pppd/upap.c b/pppd/upap.c
index b59d130..4e5c045 100644
--- a/pppd/upap.c
+++ b/pppd/upap.c
@@ -17,9 +17,7 @@
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifndef lint
-static char rcsid[] = "$Id: upap.c,v 1.14 1999/03/16 03:15:15 paulus Exp $";
-#endif
+#define RCSID	"$Id: upap.c,v 1.22 1999/11/15 01:51:53 paulus Exp $"
 
 /*
  * TODO:
@@ -31,6 +29,8 @@ static char rcsid[] = "$Id: upap.c,v 1.14 1999/03/16 03:15:15 paulus Exp $";
 #include "pppd.h"
 #include "upap.h"
 
+static const char rcsid[] = RCSID;
+
 static bool hide_password;
 
 /*
@@ -38,7 +38,7 @@ static bool hide_password;
  */
 static option_t pap_option_list[] = {
     { "hide-password", o_bool, &hide_password,
-      "Don't output passwords to log" },
+      "Don't output passwords to log", 1 },
     { "pap-restart", o_int, &upap[0].us_timeouttime,
       "Set retransmit timeout for PAP" },
     { "pap-max-authreq", o_int, &upap[0].us_maxtransmits,
@@ -72,6 +72,7 @@ struct protent pap_protent = {
     NULL,
     1,
     "PAP",
+    NULL,
     pap_option_list,
     NULL,
     NULL,
@@ -371,7 +372,7 @@ upap_rauthreq(u, inp, id, len)
     /*
      * Parse user/passwd.
      */
-    if (len < sizeof (u_char)) {
+    if (len < 1) {
 	UPAPDEBUG(("pap_rauth: rcvd short packet."));
 	return;
     }
@@ -394,8 +395,11 @@ upap_rauthreq(u, inp, id, len)
      * Check the username and password given.
      */
     retcode = check_passwd(u->us_unit, ruser, ruserlen, rpasswd,
-			   rpasswdlen, &msg, &msglen);
+			   rpasswdlen, &msg);
     BZERO(rpasswd, rpasswdlen);
+    msglen = strlen(msg);
+    if (msglen > 255)
+	msglen = 255;
 
     upap_sresp(u, retcode, id, msg, msglen);
 
@@ -431,18 +435,20 @@ upap_rauthack(u, inp, id, len)
     /*
      * Parse message.
      */
-    if (len < sizeof (u_char)) {
-	UPAPDEBUG(("pap_rauthack: rcvd short packet."));
-	return;
-    }
-    GETCHAR(msglen, inp);
-    len -= sizeof (u_char);
-    if (len < msglen) {
-	UPAPDEBUG(("pap_rauthack: rcvd short packet."));
-	return;
+    if (len < 1) {
+	UPAPDEBUG(("pap_rauthack: ignoring missing msg-length."));
+    } else {
+	GETCHAR(msglen, inp);
+	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;
 
@@ -469,18 +475,20 @@ upap_rauthnak(u, inp, id, len)
     /*
      * Parse message.
      */
-    if (len < sizeof (u_char)) {
-	UPAPDEBUG(("pap_rauthnak: rcvd short packet."));
-	return;
-    }
-    GETCHAR(msglen, inp);
-    len -= sizeof (u_char);
-    if (len < msglen) {
-	UPAPDEBUG(("pap_rauthnak: rcvd short packet."));
-	return;
+    if (len < 1) {
+	UPAPDEBUG(("pap_rauthnak: ignoring missing msg-length."));
+    } else {
+	GETCHAR(msglen, inp);
+	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;