Allow ipfw to accept comments and blank lines.

This makes ipfw config files a LOT more readable.

sbin/ipfw/ipfw.8

@@ -84,6 +84,8 @@ The zero operation zeroes the counters associated with rule number
 .Pp
 The flush operation removes all rules.
 .Pp
+Any command beginning with a '#', or being all blank, is ignored.
+.Pp
 One rule is always present:
 .Bd -literal -offset center
 65535 deny all from any to any

sbin/ipfw/ipfw.c

@@ -16,7 +16,7 @@
  *
  * NEW command line interface for IP firewall facility
  *
- * $Id: ipfw.c,v 1.46 1997/07/25 03:13:46 brian Exp $
+ * $Id: ipfw.c,v 1.47 1997/08/08 14:36:28 alex Exp $
  *
  */
 
@@ -1200,9 +1200,13 @@ main(ac, av)
 			sprintf(linename, "Line %d", lineno);
 			args[0] = linename;
 
+			if (*buf == '#')
+				continue;
 			for (i = 1, a = strtok(buf, WHITESP);
 			    a && i < MAX_ARGS; a = strtok(NULL, WHITESP), i++)
 				args[i] = a;
+			if (i == 1)
+				continue;
 			if (i == MAX_ARGS)
 				errx(1, "%s: too many arguments", linename);
 			args[i] = NULL;