From ad0bed59f2b059edcae4af8cd1b3a1ba46523175 Mon Sep 17 00:00:00 2001
From: "/C=JP/ST=JP/CN=Yasuyuki Kozakai/emailAddress=yasuyuki@netfilter.org"
 </C=JP/ST=JP/CN=Yasuyuki Kozakai/emailAddress=yasuyuki@netfilter.org>
Date: Tue, 24 Jul 2007 07:03:59 +0000
Subject: Add IPv6 support to quota match

---
 extensions/libxt_quota.c | 123 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 extensions/libxt_quota.c

(limited to 'extensions/libxt_quota.c')

diff --git a/extensions/libxt_quota.c b/extensions/libxt_quota.c
new file mode 100644
index 0000000..a273b29
--- /dev/null
+++ b/extensions/libxt_quota.c
@@ -0,0 +1,123 @@
+/*
+ * Shared library add-on to iptables to add quota support
+ *
+ * Sam Johnston <samj@samj.net>
+ */
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <xtables.h>
+
+#include <linux/netfilter/xt_quota.h>
+
+static struct option opts[] = {
+        {"quota", 1, 0, '1'},
+        {0}
+};
+
+/* print usage */
+static void
+help(void)
+{
+        printf("quota options:\n"
+               " --quota quota			quota (bytes)\n" "\n");
+}
+
+/* print matchinfo */
+static void
+print(const void *ip, const struct xt_entry_match *match, int numeric)
+{
+        struct xt_quota_info *q = (struct xt_quota_info *) match->data;
+        printf("quota: %llu bytes", (unsigned long long) q->quota);
+}
+
+/* save matchinfo */
+static void
+save(const void *ip, const struct xt_entry_match *match)
+{
+        struct xt_quota_info *q = (struct xt_quota_info *) match->data;
+        printf("--quota %llu ", (unsigned long long) q->quota);
+}
+
+/* parse quota option */
+static int
+parse_quota(const char *s, u_int64_t * quota)
+{
+        *quota = strtoull(s, (char **) NULL, 10);
+
+#ifdef DEBUG_XT_QUOTA
+        printf("Quota: %llu\n", *quota);
+#endif
+
+        if (*quota == -1)
+                exit_error(PARAMETER_PROBLEM, "quota invalid: '%s'\n", s);
+        else
+                return 1;
+}
+
+/* parse all options, returning true if we found any for us */
+static int
+parse(int c, char **argv, int invert, unsigned int *flags,
+      const void *entry,
+      unsigned int *nfcache, struct xt_entry_match **match)
+{
+        struct xt_quota_info *info = (struct xt_quota_info *) (*match)->data;
+
+        switch (c) {
+        case '1':
+                if (check_inverse(optarg, &invert, NULL, 0))
+                        exit_error(PARAMETER_PROBLEM, "quota: unexpected '!'");
+                if (!parse_quota(optarg, &info->quota))
+                        exit_error(PARAMETER_PROBLEM,
+                                   "bad quota: '%s'", optarg);
+                break;
+
+        default:
+                return 0;
+        }
+        return 1;
+}
+
+/* no final check */
+static void
+final_check(unsigned int flags)
+{
+}
+
+struct xtables_match quota = { 
+	.next		= NULL,
+	.family		= AF_INET,
+	.name		= "quota",
+	.version	= IPTABLES_VERSION,
+	.size		= XT_ALIGN(sizeof (struct xt_quota_info)),
+	.userspacesize	= offsetof(struct xt_quota_info, quota),
+	.help		= &help,
+	.parse		= &parse,
+	.final_check	= &final_check,
+	.print		= &print,
+	.save		= &save,
+	.extra_opts	= opts
+};
+
+struct xtables_match quota6 = { 
+	.next		= NULL,
+	.family		= AF_INET6,
+	.name		= "quota",
+	.version	= IPTABLES_VERSION,
+	.size		= XT_ALIGN(sizeof (struct xt_quota_info)),
+	.userspacesize	= offsetof(struct xt_quota_info, quota),
+	.help		= &help,
+	.parse		= &parse,
+	.final_check	= &final_check,
+	.print		= &print,
+	.save		= &save,
+	.extra_opts	= opts
+};
+
+void
+_init(void)
+{
+	xtables_register_match(&quota);
+	xtables_register_match(&quota6);
+}
-- 
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