Don't mistreat unknown protocol names as "any protocol"

diff --git a/options.c b/options.c
index 5a7a901a6433d47b032b9a7e01b0ba3900b2d947..6f96681561cbeec9b782da075dab1880a8568400 100644 (file)
--- a/options.c
+++ b/options.c
@@ -518,6 +518,7 @@ fw3_parse_protocol(void *ptr, const char *val, bool is_list)
 {
        struct fw3_protocol proto = { };
        struct protoent *ent;
+       char *e;
 
        if (*val == '!')
        {
@@ -556,9 +557,9 @@ fw3_parse_protocol(void *ptr, const char *val, bool is_list)
                return true;
        }
 
-       proto.protocol = strtoul(val, NULL, 10);
+       proto.protocol = strtoul(val, &e, 10);
 
-       if (errno == ERANGE || errno == EINVAL)
+       if ((e == val) || (*e != 0))
                return false;
 
        put_value(ptr, &proto, sizeof(proto), is_list);