Add a check to the user supplied value of the local port.
I haven't used the return value of strtonum since pflag is used later as a
pointer.
ok?
-mark
Index: netcat.c
===================================================================
RCS file: /cvs/src/usr.bin/nc/netcat.c,v
retrieving revision 1.98
diff -u -p -r1.98 netcat.c
--- netcat.c 3 Jul 2010 04:44:51 -0000 1.98
+++ netcat.c 23 Sep 2010 07:13:51 -0000
@@ -174,6 +174,9 @@ main(int argc, char *argv[])
Pflag = optarg;
break;
case 'p':
+ strtonum(optarg, 1, PORT_MAX, &errstr);
+ if (errstr)
+ errx(1, "source port %s: %s", errstr, optarg);
pflag = optarg;
break;
case 'r':
