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-rw-r--r--userspace/arptables/include/libarptc/arpt_kernel_headers.h29
-rw-r--r--userspace/arptables/include/libarptc/libarptc.h156
2 files changed, 185 insertions, 0 deletions
diff --git a/userspace/arptables/include/libarptc/arpt_kernel_headers.h b/userspace/arptables/include/libarptc/arpt_kernel_headers.h
new file mode 100644
index 0000000..442cc54
--- /dev/null
+++ b/userspace/arptables/include/libarptc/arpt_kernel_headers.h
@@ -0,0 +1,29 @@
+/* This is the userspace/kernel interface for Generic IP Chains,
+ required for libc6. */
+#ifndef _FWCHAINS_KERNEL_HEADERS_H
+#define _FWCHAINS_KERNEL_HEADERS_H
+
+#include <limits.h>
+
+#if defined(__GLIBC__) && __GLIBC__ == 2
+#include <netinet/ip.h>
+#include <netinet/in.h>
+#include <netinet/ip_icmp.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <netinet/ether.h>
+#include <net/if.h>
+#include <sys/types.h>
+#else
+#include <sys/socket.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/if.h>
+#include <linux/icmp.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/types.h>
+#include <linux/in6.h>
+#endif
+
+#endif
diff --git a/userspace/arptables/include/libarptc/libarptc.h b/userspace/arptables/include/libarptc/libarptc.h
new file mode 100644
index 0000000..b7d3d36
--- /dev/null
+++ b/userspace/arptables/include/libarptc/libarptc.h
@@ -0,0 +1,156 @@
+#ifndef _LIBARPTC_H
+#define _LIBARPTC_H
+/* Library which manipulates filtering rules. */
+
+#include <libarptc/arpt_kernel_headers.h>
+#include <linux/netfilter_arp/arp_tables.h>
+
+#ifndef ARPT_MIN_ALIGN
+/* arpt_entry has pointers and u_int64_t's in it, so if you align to
+ it, you'll also align to any crazy matches and targets someone
+ might write */
+#define ARPT_MIN_ALIGN (__alignof__(struct arpt_entry))
+#endif
+
+#define ARPT_ALIGN(s) (((s) + ((ARPT_MIN_ALIGN)-1)) & ~((ARPT_MIN_ALIGN)-1))
+
+typedef char arpt_chainlabel[32];
+
+#define ARPTC_LABEL_ACCEPT "ACCEPT"
+#define ARPTC_LABEL_DROP "DROP"
+#define ARPTC_LABEL_QUEUE "QUEUE"
+#define ARPTC_LABEL_RETURN "RETURN"
+
+/* Transparent handle type. */
+typedef struct arptc_handle *arptc_handle_t;
+
+/* Does this chain exist? */
+int arptc_is_chain(const char *chain, const arptc_handle_t handle);
+
+/* Take a snapshot of the rules. Returns NULL on error. */
+arptc_handle_t arptc_init(const char *tablename);
+
+/* Iterator functions to run through the chains. Returns NULL at end. */
+const char *arptc_first_chain(arptc_handle_t *handle);
+const char *arptc_next_chain(arptc_handle_t *handle);
+
+/* Get first rule in the given chain: NULL for empty chain. */
+const struct arpt_entry *arptc_first_rule(const char *chain,
+ arptc_handle_t *handle);
+
+/* Returns NULL when rules run out. */
+const struct arpt_entry *arptc_next_rule(const struct arpt_entry *prev,
+ arptc_handle_t *handle);
+
+/* Returns a pointer to the target name of this entry. */
+const char *arptc_get_target(const struct arpt_entry *e,
+ arptc_handle_t *handle);
+
+/* Is this a built-in chain? */
+int arptc_builtin(const char *chain, const arptc_handle_t handle);
+
+/* Get the policy of a given built-in chain */
+const char *arptc_get_policy(const char *chain,
+ struct arpt_counters *counter,
+ arptc_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 libarptc). */
+/* Rule numbers start at 1 for the first rule. */
+
+/* Insert the entry `e' in chain `chain' into position `rulenum'. */
+int arptc_insert_entry(const arpt_chainlabel chain,
+ const struct arpt_entry *e,
+ unsigned int rulenum,
+ arptc_handle_t *handle);
+
+/* Atomically replace rule `rulenum' in `chain' with `e'. */
+int arptc_replace_entry(const arpt_chainlabel chain,
+ const struct arpt_entry *e,
+ unsigned int rulenum,
+ arptc_handle_t *handle);
+
+/* Append entry `e' to chain `chain'. Equivalent to insert with
+ rulenum = length of chain. */
+int arptc_append_entry(const arpt_chainlabel chain,
+ const struct arpt_entry *e,
+ arptc_handle_t *handle);
+
+/* Delete the first rule in `chain' which matches `e', subject to
+ matchmask (array of length == origfw) */
+int arptc_delete_entry(const arpt_chainlabel chain,
+ const struct arpt_entry *origfw,
+ unsigned char *matchmask,
+ arptc_handle_t *handle);
+
+/* Delete the rule in position `rulenum' in `chain'. */
+int arptc_delete_num_entry(const arpt_chainlabel chain,
+ unsigned int rulenum,
+ arptc_handle_t *handle);
+
+/* Check the packet `e' on chain `chain'. Returns the verdict, or
+ NULL and sets errno. */
+const char *arptc_check_packet(const arpt_chainlabel chain,
+ struct arpt_entry *entry,
+ arptc_handle_t *handle);
+
+/* Flushes the entries in the given chain (ie. empties chain). */
+int arptc_flush_entries(const arpt_chainlabel chain,
+ arptc_handle_t *handle);
+
+/* Zeroes the counters in a chain. */
+int arptc_zero_entries(const arpt_chainlabel chain,
+ arptc_handle_t *handle);
+
+/* Creates a new chain. */
+int arptc_create_chain(const arpt_chainlabel chain,
+ arptc_handle_t *handle);
+
+/* Deletes a chain. */
+int arptc_delete_chain(const arpt_chainlabel chain,
+ arptc_handle_t *handle);
+
+/* Renames a chain. */
+int arptc_rename_chain(const arpt_chainlabel oldname,
+ const arpt_chainlabel newname,
+ arptc_handle_t *handle);
+
+/* Sets the policy on a built-in chain. */
+int arptc_set_policy(const arpt_chainlabel chain,
+ const arpt_chainlabel policy,
+ struct arpt_counters *counters,
+ arptc_handle_t *handle);
+
+/* Get the number of references to this chain */
+int arptc_get_references(unsigned int *ref,
+ const arpt_chainlabel chain,
+ arptc_handle_t *handle);
+
+/* read packet and byte counters for a specific rule */
+struct arpt_counters *arptc_read_counter(const arpt_chainlabel chain,
+ unsigned int rulenum,
+ arptc_handle_t *handle);
+
+/* zero packet and byte counters for a specific rule */
+int arptc_zero_counter(const arpt_chainlabel chain,
+ unsigned int rulenum,
+ arptc_handle_t *handle);
+
+/* set packet and byte counters for a specific rule */
+int arptc_set_counter(const arpt_chainlabel chain,
+ unsigned int rulenum,
+ struct arpt_counters *counters,
+ arptc_handle_t *handle);
+
+/* Makes the actual changes. */
+int arptc_commit(arptc_handle_t *handle);
+
+/* Get raw socket. */
+int arptc_get_raw_socket();
+
+/* Translates errno numbers into more human-readable form than strerror. */
+const char *arptc_strerror(int err);
+
+
+
+#endif /* _LIBARPTC_H */