1. All fragments (except the first one) of a fragmented packet were

dropped - devet@adv.IAEhv.nl (Arjan de Vet)
2. Will not read data from telnet connection - John Capo <jc@irbs.com>
3. Using LQM option could be drop the link due to LcpLayerDown() doesn't
   stop LQR timer. -  Brian <brian@awfulhak.demon.co.uk>
4. Allow to describe a syntax of filters that is not only port number
   but also by name in /etc/service. -  Rich Murphey <rich@lamprey.utmb.edu>

Reviewed by:	Atsushi Murai <amurai@spec.co.jp>
Submitted by:	devet@adv.IAEhv.nl, jc@irbs.com, brian@awfulhak.demon.co.uk,
		rich@lamprey.utmb.edu

usr.sbin/ppp/filter.c

@@ -17,15 +17,17 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
- * $Id: filter.c,v 1.3 1995/02/26 12:17:25 amurai Exp $
+ * $Id: filter.c,v 1.4 1995/05/30 03:50:31 rgrimes Exp $
  *
  *	TODO: Shoud send ICMP error message when we discard packets.
  */
 
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/param.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <netdb.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <strings.h>
@@ -108,6 +110,38 @@ char **argv;
   return(proto);
 }
 
+static int
+ParsePort(service, proto)
+char *service;
+int proto;
+{
+  char *protocol_name, *cp;
+  struct servent *servent;
+  int port;
+
+  switch (proto) {
+  case P_UDP:
+    protocol_name = "udp";
+    break;
+  case P_TCP:
+    protocol_name = "tcp";
+    break;
+  default:
+    protocol_name = 0;
+  }
+
+  servent = getservbyname (service, protocol_name);
+  if (servent != 0)
+    return(ntohs(servent->s_port));
+
+  port = strtol(service, &cp, 0);
+  if (cp == service) {
+    printf("%s is not a port name or number.\n", service);
+    return(0);
+  }
+  return(port);
+}
+
 /*
  *	ICMP Syntax:	src eq icmp_message_type
  */
@@ -161,9 +195,10 @@ char *cp;
  *	UDP Syntax: [src op port] [dst op port]
  */
 static int
-ParseUdp(argc, argv)
+ParseUdpOrTcp(argc, argv, proto)
 int argc;
 char **argv;
+int proto;
 {
   int port;
   char *cp;
@@ -179,78 +214,42 @@ char **argv;
 #endif
     return(0);
   }
-  if (STREQ(*argv, "src")) {
+  if (argc >= 3 && STREQ(*argv, "src")) {
     filterdata.opt.srcop = ParseOp(argv[1]);
     if (filterdata.opt.srcop == OP_NONE) {
       printf("bad operation\n");
       return(0);
     }
-    port = strtol(argv[2], &cp, 0);
+    filterdata.opt.srcport = ParsePort(argv[2], proto);
-    if (cp == argv[2]) {
+    if (filterdata.opt.srcport == 0)
-      printf("expect port number.\n");
       return(0);
-    }
-    filterdata.opt.srcport = port;
     argc -= 3; argv += 3;
     if (argc == 0)
       return(1);
   }
-
   if (argc >= 3 && STREQ(argv[0], "dst")) {
     filterdata.opt.dstop = ParseOp(argv[1]);
     if (filterdata.opt.dstop == OP_NONE) {
       printf("bad operation\n");
       return(0);
     }
-    port = strtol(argv[2], &cp, 0);
+    filterdata.opt.dstport = ParsePort(argv[2], proto);
-    if (cp == argv[2]) {
+    if (filterdata.opt.dstport == 0)
-      printf("port number is expected.\n");
       return(0);
-    }
-    filterdata.opt.dstport = port;
-    return(1);
-  }
-  if (argc == 1 && STREQ(argv[0], "estab"))
-    return(1);
-  printf("no src/dst port.\n");
-  return(0);
-}
-
-/*
- *  TCP Syntax: [src op port] [dst op port] [estab]
- */
-static int
-ParseTcp(argc, argv)
-int argc;
-char **argv;
-{
-  int val;
-
-  val = ParseUdp(argc, argv);
-  if (val) {
-    if (argc == 0) return(1);	/* Will permit/deny all tcp traffic */
     argc -= 3; argv += 3;
-    if (argc > 1) {
+    if (argc == 0)
-      argc -= 3; argv += 3;
+      return(1);
+  }
+  if (argc == 1) {
+    if (STREQ(*argv, "estab")) {
+      filterdata.opt.estab = 1;
+      return(1);
     }
-    if (argc < 0 || argc > 1) {
+    printf("estab is expected: %s\n", *argv);
-      printf("bad tcp syntax.\n");
+    return(0);
-      return(0);
+  }
-    }
+  if (argc > 0)
-    if (argc == 1) {
+    printf("bad %s src/dst port syntax: %s\n", *argv);
-checkestab:
-      if (STREQ(*argv, "estab")) {
-	filterdata.opt.estab = 1;
-	return(1);
-      }
-      printf("estab is expected.\n");
-      return(0);
-    }
-
-    return(1);
-  } else if (argc == 1)
-    goto checkestab;
-  printf("bad port syntax (val = %d, argc = %d.\n", val, argc);
   return(0);
 }
 
@@ -343,10 +342,10 @@ struct filterent *ofp;
 
   switch (proto) {
   case P_TCP:
-    val = ParseTcp(argc, argv);
+    val = ParseUdpOrTcp(argc, argv, P_TCP);
     break;
   case P_UDP:
-    val = ParseUdp(argc, argv);
+    val = ParseUdpOrTcp(argc, argv, P_UDP);
     break;
   case P_ICMP:
     val = ParseIcmp(argc, argv);

usr.sbin/ppp/ip.c

@@ -17,7 +17,7 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
- * $Id: ip.c,v 1.3 1995/03/11 15:18:42 amurai Exp $
+ * $Id: ip.c,v 1.4 1995/05/30 03:50:37 rgrimes Exp $
  *
  *	TODO:
  *		o Return ICMP message for filterd packet
@@ -131,6 +131,11 @@ int direction;
     sport = dport = 0;
     for (n = 0; n < MAXFILTERS; n++) {
       if (fp->action) {
+         /* permit fragments on in and out filter */
+         if ((direction == FL_IN || direction == FL_OUT) &&
+             (pip->ip_off & IP_OFFMASK) != 0) {
+              return(A_PERMIT);
+         }
 #ifdef DEBUG
 logprintf("rule = %d\n", n);
 #endif

usr.sbin/ppp/lcp.c

@@ -17,7 +17,7 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
- * $Id: lcp.c,v 1.4 1995/05/30 03:50:40 rgrimes Exp $
+ * $Id: lcp.c,v 1.5 1995/07/08 05:09:57 amurai Exp $
  *
  * TODO:
  *      o Validate magic number received from peer.
@@ -372,6 +372,7 @@ struct fsm *fp;
 {
   LogPrintf(LOG_LCP, "%s: LayerDown\n", fp->name);
   StopAllTimers();
+  StopLqr( LQM_LQR );
   OsLinkdown();
   NewPhase(PHASE_TERMINATE);
 }

usr.sbin/ppp/main.c

@@ -17,7 +17,7 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
- * $Id: main.c,v 1.6 1995/07/06 02:58:57 asami Exp $
+ * $Id: main.c,v 1.8 1995/09/02 17:20:52 amurai Exp $
  *
  *	TODO:
  *		o Add commands for traffic summary, version display, etc.
@@ -737,7 +737,7 @@ DoLoop()
     }
 
     if ((mode & MODE_INTER) && FD_ISSET(netfd, &rfds) &&
-	pgroup == tcgetpgrp(0)) {
+	((mode & MODE_AUTO) || pgroup == tcgetpgrp(0))) {
       /* something to read from tty */
       ReadTty();
     }

usr.sbin/ppp/ppp.8

@@ -1,5 +1,5 @@
 .\" manual page [] for ppp 0.94 beta2 + alpha
-.\" $Id: ppp.8,v 1.8 1995/05/26 17:35:54 jkh Exp $
+.\" $Id: ppp.8,v 1.9 1995/06/26 08:04:16 bde Exp $
 .\" SH section heading
 .\" SS subsection heading
 .\" LP paragraph
@@ -316,6 +316,8 @@ o A filter definition has the following syntax:
 
    d) proto must be one of icmp, udp or tcp.
 
+   e) port number can be specify by number and service name in /etc/service.
+
 .TP
 o Each filter can hold up to 20 rules, starting from rule 0.
 The entire rule set is not effective until rule 0 is defined.
@@ -587,8 +589,12 @@ Logging and debugging information file.
 .B /var/spool/lock/Lck..* 
 tty port locking file.
 
+.TP
+.B /etc/service
+Get port number if port number is using service name.
+
 .SH HISTORY
-This program was submitted in FreeBSD-2.0.5 by Atsushi Murai (amurai@spec.co.jp).
+This program was submitted in FreeBSD-2.0.5 Atsushi Murai (amurai@spec.co.jp).
 
 .SH AUTHORS
 Toshiharu OHNO (tony-o@iij.ad.jp)

usr.sbin/ppp/ppp.8.m4

@@ -1,5 +1,5 @@
 .\" manual page [] for ppp 0.94 beta2 + alpha
-.\" $Id: ppp.8,v 1.8 1995/05/26 17:35:54 jkh Exp $
+.\" $Id: ppp.8,v 1.9 1995/06/26 08:04:16 bde Exp $
 .\" SH section heading
 .\" SS subsection heading
 .\" LP paragraph
@@ -316,6 +316,8 @@ o A filter definition has the following syntax:
 
    d) proto must be one of icmp, udp or tcp.
 
+   e) port number can be specify by number and service name in /etc/service.
+
 .TP
 o Each filter can hold up to 20 rules, starting from rule 0.
 The entire rule set is not effective until rule 0 is defined.
@@ -587,8 +589,12 @@ Logging and debugging information file.
 .B /var/spool/lock/Lck..* 
 tty port locking file.
 
+.TP
+.B /etc/service
+Get port number if port number is using service name.
+
 .SH HISTORY
-This program was submitted in FreeBSD-2.0.5 by Atsushi Murai (amurai@spec.co.jp).
+This program was submitted in FreeBSD-2.0.5 Atsushi Murai (amurai@spec.co.jp).
 
 .SH AUTHORS
 Toshiharu OHNO (tony-o@iij.ad.jp)