iptables-1.3.2-20050720

[iptables.git] / extensions / libipt_DNAT.c

diff --git a/extensions/libipt_DNAT.c b/extensions/libipt_DNAT.c
index 9b82675..9e4f525 100644 (file)
--- a/extensions/libipt_DNAT.c
+++ b/extensions/libipt_DNAT.c
@@ -33,14 +33,6 @@ static struct option opts[] = {
        { 0 }
 };
 
-/* Initialize the target. */
-static void
-init(struct ipt_entry_target *t, unsigned int *nfcache)
-{
-       /* Can't cache this */
-       *nfcache |= NFC_UNKNOWN;
-}
-
 static struct ipt_natinfo *
 append_range(struct ipt_natinfo *info, const struct ip_nat_range *range)
 {
@@ -65,7 +57,7 @@ static struct ipt_entry_target *
 parse_to(char *arg, int portok, struct ipt_natinfo *info)
 {
        struct ip_nat_range range;
-       char *colon, *dash;
+       char *colon, *dash, *error;
        struct in_addr *ip;
 
        memset(&range, 0, sizeof(range));
@@ -81,10 +73,15 @@ parse_to(char *arg, int portok, struct ipt_natinfo *info)
                range.flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
 
                port = atoi(colon+1);
-               if (port == 0 || port > 65535)
+               if (port <= 0 || port > 65535)
                        exit_error(PARAMETER_PROBLEM,
                                   "Port `%s' not valid\n", colon+1);
 
+               error = strchr(colon+1, ':');
+               if (error)
+                       exit_error(PARAMETER_PROBLEM,
+                                  "Invalid port:port syntax - use dash\n");
+
                dash = strchr(colon, '-');
                if (!dash) {
                        range.min.tcp.port
@@ -94,7 +91,7 @@ parse_to(char *arg, int portok, struct ipt_natinfo *info)
                        int maxport;
 
                        maxport = atoi(dash + 1);
-                       if (maxport == 0 || maxport > 65535)
+                       if (maxport <= 0 || maxport > 65535)
                                exit_error(PARAMETER_PROBLEM,
                                           "Port `%s' not valid\n", dash+1);
                        if (maxport < port)
@@ -224,20 +221,18 @@ save(const struct ipt_ip *ip, const struct ipt_entry_target *target)
        }
 }
 
-static
-struct iptables_target dnat
-= { NULL,
-    "DNAT",
-    IPTABLES_VERSION,
-    IPT_ALIGN(sizeof(struct ip_nat_multi_range)),
-    IPT_ALIGN(sizeof(struct ip_nat_multi_range)),
-    &help,
-    &init,
-    &parse,
-    &final_check,
-    &print,
-    &save,
-    opts
+static struct iptables_target dnat = { 
+       .next           = NULL,
+       .name           = "DNAT",
+       .version        = IPTABLES_VERSION,
+       .size           = IPT_ALIGN(sizeof(struct ip_nat_multi_range)),
+       .userspacesize  = IPT_ALIGN(sizeof(struct ip_nat_multi_range)),
+       .help           = &help,
+       .parse          = &parse,
+       .final_check    = &final_check,
+       .print          = &print,
+       .save           = &save,
+       .extra_opts     = opts
 };
 
 void _init(void)