From f22c085fe68bb827b15d235fee307f054c4f85a4 Mon Sep 17 00:00:00 2001
From: rusty <rusty>
Date: Tue, 2 May 2000 16:45:16 +0000
Subject: IPv6 enhancements.

---
 include/libiptc/libip6tc.h | 133 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 include/libiptc/libip6tc.h

(limited to 'include/libiptc/libip6tc.h')

diff --git a/include/libiptc/libip6tc.h b/include/libiptc/libip6tc.h
new file mode 100644
index 0000000..d0b87bd
--- /dev/null
+++ b/include/libiptc/libip6tc.h
@@ -0,0 +1,133 @@
+#ifndef _LIBIP6TC_H
+#define _LIBIP6TC_H
+/* Library which manipulates firewall rules. Version 0.2. */
+
+#include <libiptc/ipt_kernel_headers.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
+
+#ifndef IP6T_MIN_ALIGN
+#define IP6T_MIN_ALIGN (__alignof__(struct ip6t_entry_match))
+#endif
+#define IP6T_ALIGN(s) (((s) + (IP6T_MIN_ALIGN-1)) & ~(IP6T_MIN_ALIGN-1))
+
+typedef char ip6t_chainlabel[32];
+
+#define IP6TC_LABEL_ACCEPT "ACCEPT"
+#define IP6TC_LABEL_DROP "DROP"
+#define IP6TC_LABEL_RETURN "RETURN"
+
+/* Transparent handle type. */
+typedef struct ip6tc_handle *ip6tc_handle_t;
+
+/* Does this chain exist? */
+int ip6tc_is_chain(const char *chain, const ip6tc_handle_t handle);
+
+/* Take a snapshot of the rules. Returns NULL on error. */
+ip6tc_handle_t ip6tc_init(const char *tablename);
+
+/* Iterator functions to run through the chains; prev = NULL means
+ first chain. Returns NULL at end. */
+const char *ip6tc_next_chain(const char *prev, ip6tc_handle_t *handle);
+
+/* How many rules in this chain? */
+unsigned int ip6tc_num_rules(const char *chain, ip6tc_handle_t *handle);
+
+/* Get n'th rule in this chain. */
+const struct ip6t_entry *ip6tc_get_rule(const char *chain,
+					unsigned int n,
+					ip6tc_handle_t *handle);
+
+/* Returns a pointer to the target name of this position. */
+const char *ip6tc_get_target(const char *chain,
+			     unsigned int n,
+			     ip6tc_handle_t *handle);
+
+/* Is this a built-in chain? */
+int ip6tc_builtin(const char *chain, const ip6tc_handle_t handle);
+
+/* Get the policy of a given built-in chain */
+const char *ip6tc_get_policy(const char *chain,
+			     struct ip6t_counters *counters,
+			     ip6tc_handle_t *handle);
+
+/* These functions return TRUE for OK or 0 and set errno. If errno ==
+   0, it means there was a version error (ie. upgrade libiptc). */
+/* Rule numbers start at 1 for the first rule. */
+
+/* Insert the entry `fw' in chain `chain' into position `rulenum'. */
+int ip6tc_insert_entry(const ip6t_chainlabel chain,
+		       const struct ip6t_entry *e,
+		       unsigned int rulenum,
+		       ip6tc_handle_t *handle);
+
+/* Atomically replace rule `rulenum' in `chain' with `fw'. */
+int ip6tc_replace_entry(const ip6t_chainlabel chain,
+			const struct ip6t_entry *e,
+			unsigned int rulenum,
+			ip6tc_handle_t *handle);
+
+/* Append entry `fw' to chain `chain'. Equivalent to insert with
+   rulenum = length of chain. */
+int ip6tc_append_entry(const ip6t_chainlabel chain,
+		       const struct ip6t_entry *e,
+		       ip6tc_handle_t *handle);
+
+/* Delete the first rule in `chain' which matches `fw'. */
+int ip6tc_delete_entry(const ip6t_chainlabel chain,
+		       const struct ip6t_entry *origfw,
+		       ip6tc_handle_t *handle);
+
+/* Delete the rule in position `rulenum' in `chain'. */
+int ip6tc_delete_num_entry(const ip6t_chainlabel chain,
+			   unsigned int rulenum,
+			   ip6tc_handle_t *handle);
+
+/* Check the packet `fw' on chain `chain'. Returns the verdict, or
+   NULL and sets errno. */
+const char *ip6tc_check_packet(const ip6t_chainlabel chain,
+			       struct ip6t_entry *,
+			       ip6tc_handle_t *handle);
+
+/* Flushes the entries in the given chain (ie. empties chain). */
+int ip6tc_flush_entries(const ip6t_chainlabel chain,
+			ip6tc_handle_t *handle);
+
+/* Zeroes the counters in a chain. */
+int ip6tc_zero_entries(const ip6t_chainlabel chain,
+		       ip6tc_handle_t *handle);
+
+/* Creates a new chain. */
+int ip6tc_create_chain(const ip6t_chainlabel chain,
+		       ip6tc_handle_t *handle);
+
+/* Deletes a chain. */
+int ip6tc_delete_chain(const ip6t_chainlabel chain,
+		       ip6tc_handle_t *handle);
+
+/* Renames a chain. */
+int ip6tc_rename_chain(const ip6t_chainlabel oldname,
+		       const ip6t_chainlabel newname,
+		       ip6tc_handle_t *handle);
+
+/* Sets the policy on a built-in chain. */
+int ip6tc_set_policy(const ip6t_chainlabel chain,
+		     const ip6t_chainlabel policy,
+		     ip6tc_handle_t *handle);
+
+/* Get the number of references to this chain */
+int ip6tc_get_references(unsigned int *ref, const ip6t_chainlabel chain,
+			 ip6tc_handle_t *handle);
+
+/* Makes the actual changes. */
+int ip6tc_commit(ip6tc_handle_t *handle);
+
+/* Get raw socket. */
+int ip6tc_get_raw_socket();
+
+/* Translates errno numbers into more human-readable form than strerror. */
+const char *ip6tc_strerror(int err);
+
+/* Return prefix length, or -1 if not contiguous */
+int ipv6_prefix_length(const struct in6_addr *a);
+
+#endif /* _LIBIP6TC_H */
-- 
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