--- /dev/null
+/* Shared library add-on to iptables to add IP pool mangling target. */
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <ctype.h>
+
+#include <iptables.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv4/ip_nat_rule.h>
+#include <linux/netfilter_ipv4/ip_pool.h>
+#include <linux/netfilter_ipv4/ipt_pool.h>
+
+#include <libippool/ip_pool_support.h>
+
+/* FIXME --RR */
+#define ip_pool_init ip_POOL_init
+#define ip_pool_get_index ip_POOL_get_index
+#define ip_pool_get_name ip_POOL_get_name
+#include "../ippool/libippool.c"
+
+/* Function which prints out usage message. */
+static void
+help(void)
+{
+ printf(
+"POOL v%s options:\n"
+" --add-srcip <pool>\n"
+" --del-srcip <pool>\n"
+" --add-dstip <pool>\n"
+" --del-dstip <pool>\n"
+" add/del src/dst IP from pool.\n\n",
+IPTABLES_VERSION);
+}
+
+static struct option opts[] = {
+ { "add-srcip", 1, 0, '1' },
+ { "del-srcip", 1, 0, '2' },
+ { "add-dstip", 1, 0, '3' },
+ { "del-dstip", 1, 0, '4' },
+ { 0 }
+};
+
+/* Initialize the target. */
+static void
+init(struct ipt_entry_target *target, unsigned int *nfcache)
+{
+ struct ipt_pool_info *ipi = (struct ipt_pool_info *) target->data;
+
+ ipi->src = ipi->dst = IP_POOL_NONE;
+ ipi->flags = 0;
+
+}
+
+/* Function which parses command options; returns true if it
+ ate an option */
+static int
+parse(int c, char **argv, int invert, unsigned int *flags,
+ const struct ipt_entry *entry,
+ struct ipt_entry_target **target)
+{
+ struct ipt_pool_info *ipi = (struct ipt_pool_info *) (*target)->data;
+ switch (c) {
+ case '1': /* --add-srcip <pool> */
+ ipi->src = ip_pool_get_index(optarg);
+ ipi->flags &= ~IPT_POOL_DEL_SRC;
+ break;
+ case '2': /* --del-srcip <pool> */
+ ipi->src = ip_pool_get_index(optarg);
+ ipi->flags |= IPT_POOL_DEL_SRC;
+ break;
+ case '3': /* --add-dstip <pool> */
+ ipi->dst = ip_pool_get_index(optarg);
+ ipi->flags &= ~IPT_POOL_DEL_DST;
+ break;
+ case '4': /* --del-dstip <pool> */
+ ipi->dst = ip_pool_get_index(optarg);
+ ipi->flags |= IPT_POOL_DEL_DST;
+ break;
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+/* Final check; don't care. */
+static void final_check(unsigned int flags)
+{
+}
+
+/* Prints out the targinfo. */
+static void
+print(const struct ipt_ip *ip,
+ const struct ipt_entry_target *target,
+ int numeric)
+{
+ char buf[256];
+ struct ipt_pool_info *ipi = (struct ipt_pool_info *) target->data;
+
+ printf("POOL");
+ if (ipi->src != IP_POOL_NONE) {
+ printf(" --%s-srcip %s",
+ (ipi->flags & IPT_POOL_DEL_SRC) ? "del" : "add",
+ ip_pool_get_name(buf, sizeof(buf), ipi->src, numeric));
+ }
+ if (ipi->dst != IP_POOL_NONE) {
+ printf(" --%s-dstip %s",
+ (ipi->flags & IPT_POOL_DEL_DST) ? "del" : "add",
+ ip_pool_get_name(buf, sizeof(buf), ipi->dst, numeric));
+ }
+}
+
+/* Saves the union ipt_targinfo in parsable form to stdout. */
+static void
+save(const struct ipt_ip *ip, const struct ipt_entry_target *target)
+{
+ char buf[256];
+ struct ipt_pool_info *ipi = (struct ipt_pool_info *) target->data;
+
+ printf("-j POOL");
+ if (ipi->src != IP_POOL_NONE) {
+ printf(" --%s-srcip %s",
+ (ipi->flags & IPT_POOL_DEL_SRC) ? "del" : "add",
+ ip_pool_get_name(buf, sizeof(buf), ipi->src, 0));
+ }
+ if (ipi->dst != IP_POOL_NONE) {
+ printf(" --%s-dstip %s",
+ (ipi->flags & IPT_POOL_DEL_DST) ? "del" : "add",
+ ip_pool_get_name(buf, sizeof(buf), ipi->dst, 0));
+ }
+}
+
+static struct iptables_target ipt_pool_target = {
+ .next = NULL,
+ .name = "POOL",
+ .version = IPTABLES_VERSION,
+ .size = IPT_ALIGN(sizeof(struct ipt_pool_info)),
+ .userspacesize = IPT_ALIGN(sizeof(struct ipt_pool_info)),
+ .help = &help,
+ .init = &init,
+ .parse = &parse,
+ .final_check = &final_check,
+ .print = &print,
+ .save = &save,
+ .extra_opts = opts
+};
+
+void _init(void)
+{
+ register_target(&ipt_pool_target);
+}