diff options
| author | Ted Unangst <tedu@cvs.openbsd.org> | 2018-12-27 17:22:46 +0000 |
|---|---|---|
| committer | Ted Unangst <tedu@cvs.openbsd.org> | 2018-12-27 17:22:46 +0000 |
| commit | e4fe8ad0eb28497fd0b34733f444ae45bb30bc67 (patch) | |
| tree | e0a976ccb35221fba7dc64ec6cabd07231969f0f /usr.bin/nc/netcat.c | |
| parent | a813b3fbddfe5fd6dfae56f506426dbc23d26de0 (diff) | |
port ranges can be ambiguous with hypenated port-names.
specify that ranges must be numeric, and only check for range if
first argument is a digit.
identified by danj, fix suggest by sthen
Diffstat (limited to 'usr.bin/nc/netcat.c')
| -rw-r--r-- | usr.bin/nc/netcat.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/usr.bin/nc/netcat.c b/usr.bin/nc/netcat.c index e0966f1952d..adfad2dcd91 100644 --- a/usr.bin/nc/netcat.c +++ b/usr.bin/nc/netcat.c @@ -1,4 +1,4 @@ -/* $OpenBSD: netcat.c,v 1.199 2018/11/29 14:25:06 tedu Exp $ */ +/* $OpenBSD: netcat.c,v 1.200 2018/12/27 17:22:45 tedu Exp $ */ /* * Copyright (c) 2001 Eric Jackson <ericj@monkey.org> * Copyright (c) 2015 Bob Beck. All rights reserved. @@ -42,6 +42,7 @@ #include <netinet/ip.h> #include <arpa/telnet.h> +#include <ctype.h> #include <err.h> #include <errno.h> #include <limits.h> @@ -1427,7 +1428,7 @@ build_ports(char *p) int hi, lo, cp; int x = 0; - if ((n = strchr(p, '-')) != NULL) { + if (isdigit((unsigned char)*p) && (n = strchr(p, '-')) != NULL) { *n = '\0'; n++; |