X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Fipcp.c;h=128c204d64e0c96b2b8379dabb53b4a23718fdc9;hb=a81af2d7cf2d6a53b37798311f47f71951e47345;hp=1055b5f7f167d8fc5840602c7a7571ea8ed6a41d;hpb=9d7bc1216fe468fe9888b13602e0b4b7d7d169ec;p=ppp.git

diff --git a/pppd/ipcp.c b/pppd/ipcp.c
index 1055b5f..128c204 100644
--- a/pppd/ipcp.c
+++ b/pppd/ipcp.c
@@ -1,23 +1,46 @@
 /*
  * ipcp.c - PPP IP Control Protocol.
  *
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
+ * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
  *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Carnegie Mellon University.  The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The name "Carnegie Mellon University" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For permission or any legal
+ *    details, please contact
+ *      Office of Technology Transfer
+ *      Carnegie Mellon University
+ *      5000 Forbes Avenue
+ *      Pittsburgh, PA  15213-3890
+ *      (412) 268-4387, fax: (412) 268-7395
+ *      tech-transfer@andrew.cmu.edu
+ *
+ * 4. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by Computing Services
+ *     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
+ *
+ * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
+ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define RCSID	"$Id: ipcp.c,v 1.61 2002/09/09 04:19:57 carlsonj Exp $"
+#define RCSID	"$Id: ipcp.c,v 1.65 2004/01/13 03:59:06 paulus Exp $"
 
 /*
  * TODO:
@@ -68,6 +91,7 @@ static int default_route_set[NUM_PPP];	/* Have set up a default route */
 static int proxy_arp_set[NUM_PPP];	/* Have created proxy arp entry */
 static bool usepeerdns;			/* Ask peer for DNS addrs */
 static int ipcp_is_up;			/* have called np_up() */
+static int ipcp_is_open;		/* haven't called np_finished() */
 static bool ask_for_local;		/* request our address from peer */
 static char vj_value[8];		/* string form of vj option value */
 static char netmask_str[20];		/* string form of netmask value */
@@ -579,6 +603,7 @@ ipcp_open(unit)
     int unit;
 {
     fsm_open(&ipcp_fsm[unit]);
+    ipcp_is_open = 1;
 }
 
 
@@ -1073,10 +1098,10 @@ ipcp_nakci(f, p, len)
      * If they want to negotiate about IP addresses, we comply.
      * If they want us to ask for compression, we refuse.
      */
-    while (len > CILEN_VOID) {
+    while (len >= CILEN_VOID) {
 	GETCHAR(citype, p);
 	GETCHAR(cilen, p);
-	if( (len -= cilen) < 0 )
+	if ( cilen < CILEN_VOID || (len -= cilen) < 0 )
 	    goto bad;
 	next = p + cilen - 2;
 
@@ -1662,12 +1687,12 @@ ipcp_up(f)
     script_setenv("IPLOCAL", ip_ntoa(go->ouraddr), 0);
     script_setenv("IPREMOTE", ip_ntoa(ho->hisaddr), 1);
 
+    if (go->dnsaddr[0])
+	script_setenv("DNS1", ip_ntoa(go->dnsaddr[0]), 0);
+    if (go->dnsaddr[1])
+	script_setenv("DNS2", ip_ntoa(go->dnsaddr[1]), 0);
     if (usepeerdns && (go->dnsaddr[0] || go->dnsaddr[1])) {
 	script_setenv("USEPEERDNS", "1", 0);
-	if (go->dnsaddr[0])
-	    script_setenv("DNS1", ip_ntoa(go->dnsaddr[0]), 0);
-	if (go->dnsaddr[1])
-	    script_setenv("DNS2", ip_ntoa(go->dnsaddr[1]), 0);
 	create_resolv(go->dnsaddr[0], go->dnsaddr[1]);
     }
 
@@ -1871,7 +1896,10 @@ static void
 ipcp_finished(f)
     fsm *f;
 {
-    np_finished(f->unit, PPP_IP);
+	if (ipcp_is_open) {
+		ipcp_is_open = 0;
+		np_finished(f->unit, PPP_IP);
+	}
 }