*** empty log message ***

4 files changed, 360 insertions, 0 deletions

diff --git a/include/arptables.h b/include/arptables.h
new file mode 100644
index 0000000..53d1c8c
--- /dev/null
+++ b/include/arptables.h
@@ -0,0 +1,152 @@
+#ifndef _ARPTABLES_USER_H
+#define _ARPTABLES_USER_H
+
+#include "arptables_common.h"
+#include "libarptc/libarptc.h"
+
+
+/*******************************/
+/* REMOVE LATER, PUT IN KERNEL */
+/*******************************/
+struct arpt_entry_match
+{
+	int iets;
+};
+
+/*******************************/
+/* END OF KERNEL REPLACEMENTS  */
+/*******************************/
+
+/* Include file for additions: new matches and targets. */
+struct arptables_match
+{
+	struct arptables_match *next;
+
+	arpt_chainlabel name;
+
+	const char *version;
+
+	/* Size of match data. */
+	size_t size;
+
+	/* Size of match data relevent for userspace comparison purposes */
+	size_t userspacesize;
+
+	/* Function which prints out usage message. */
+	void (*help)(void);
+
+	/* Initialize the match. */
+	void (*init)(struct arpt_entry_match *m, unsigned int *nfcache);
+
+	/* Function which parses command options; returns true if it
+           ate an option */
+	int (*parse)(int c, char **argv, int invert, unsigned int *flags,
+		     const struct arpt_entry *entry,
+		     unsigned int *nfcache,
+		     struct arpt_entry_match **match);
+
+	/* Final check; exit if not ok. */
+	void (*final_check)(unsigned int flags);
+
+	/* Prints out the match iff non-NULL: put space at end */
+	void (*print)(const struct arpt_arp *ip,
+		      const struct arpt_entry_match *match, int numeric);
+
+	/* Saves the match info in parsable form to stdout. */
+	void (*save)(const struct arpt_arp *ip,
+		     const struct arpt_entry_match *match);
+
+	/* Pointer to list of extra command-line options */
+	const struct option *extra_opts;
+
+	/* Ignore these men behind the curtain: */
+	unsigned int option_offset;
+	struct arpt_entry_match *m;
+	unsigned int mflags;
+	unsigned int used;
+	unsigned int loaded; /* simulate loading so options are merged properly */
+};
+
+struct arptables_target
+{
+	struct arptables_target *next;
+
+	arpt_chainlabel name;
+
+	const char *version;
+
+	/* Size of target data. */
+	size_t size;
+
+	/* Size of target data relevent for userspace comparison purposes */
+	size_t userspacesize;
+
+	/* Function which prints out usage message. */
+	void (*help)(void);
+
+	/* Initialize the target. */
+	void (*init)(struct arpt_entry_target *t);
+
+	/* Function which parses command options; returns true if it
+           ate an option */
+	int (*parse)(int c, char **argv, int invert, unsigned int *flags,
+		     const struct arpt_entry *entry,
+		     struct arpt_entry_target **target);
+
+	/* Final check; exit if not ok. */
+	void (*final_check)(unsigned int flags);
+
+	/* Prints out the target iff non-NULL: put space at end */
+	void (*print)(const struct arpt_arp *ip,
+		      const struct arpt_entry_target *target, int numeric);
+
+	/* Saves the targinfo in parsable form to stdout. */
+	void (*save)(const struct arpt_arp *ip,
+		     const struct arpt_entry_target *target);
+
+	/* Pointer to list of extra command-line options */
+	struct option *extra_opts;
+
+	/* Ignore these men behind the curtain: */
+	unsigned int option_offset;
+	struct arpt_entry_target *t;
+	unsigned int tflags;
+	unsigned int used;
+	unsigned int loaded; /* simulate loading so options are merged properly */
+};
+
+/* Your shared library should call one of these. */
+extern void register_match(struct arptables_match *me);
+extern void register_target(struct arptables_target *me);
+
+extern struct in_addr *dotted_to_addr(const char *dotted);
+extern char *addr_to_dotted(const struct in_addr *addrp);
+extern char *addr_to_anyname(const struct in_addr *addr);
+extern char *mask_to_dotted(const struct in_addr *mask);
+
+extern void parse_hostnetworkmask(const char *name, struct in_addr **addrpp,
+                      struct in_addr *maskp, unsigned int *naddrs);
+extern u_int16_t parse_protocol(const char *s);
+
+extern int do_command(int argc, char *argv[], char **table,
+		      arptc_handle_t *handle);
+/* Keeping track of external matches and targets: linked lists.  */
+extern struct arptables_match *arptables_matches;
+extern struct arptables_target *arptables_targets;
+
+enum arpt_tryload {
+	DONT_LOAD,
+	TRY_LOAD,
+	LOAD_MUST_SUCCEED
+};
+
+extern struct arptables_target *find_target(const char *name, enum arpt_tryload);
+extern struct arptables_match *find_match(const char *name, enum arpt_tryload);
+
+extern int delete_chain(const arpt_chainlabel chain, int verbose,
+			arptc_handle_t *handle);
+extern int flush_entries(const arpt_chainlabel chain, int verbose, 
+			arptc_handle_t *handle);
+extern int for_each_chain(int (*fn)(const arpt_chainlabel, int, arptc_handle_t *),
+		int verbose, int builtinstoo, arptc_handle_t *handle);
+#endif /*_ARPTABLES_USER_H*/
diff --git a/include/arptables_common.h b/include/arptables_common.h
new file mode 100644
index 0000000..8150ee0
--- /dev/null
+++ b/include/arptables_common.h
@@ -0,0 +1,23 @@
+#ifndef _ARPTABLES_COMMON_H
+#define _ARPTABLES_COMMON_H
+
+enum exittype {
+	OTHER_PROBLEM = 1,
+	PARAMETER_PROBLEM,
+	VERSION_PROBLEM
+};
+extern void exit_printhelp() __attribute__((noreturn));
+extern void exit_tryhelp(int) __attribute__((noreturn));
+int check_inverse(const char option[], int *invert, int *optind, int argc);
+extern int string_to_number(const char *, 
+			    unsigned int, 
+			    unsigned int,
+			    unsigned int *);
+extern int iptables_insmod(const char *modname, const char *modprobe);
+void exit_error(enum exittype, char *, ...)__attribute__((noreturn,
+							  format(printf,2,3)));
+extern const char *program_name, *program_version;
+
+  extern void init_extensions(void);
+
+#endif /*_IPTABLES_COMMON_H*/
diff --git a/include/libarptc/arpt_kernel_headers.h b/include/libarptc/arpt_kernel_headers.h
new file mode 100644
index 0000000..442cc54
--- /dev/null
+++ b/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/include/libarptc/libarptc.h b/include/libarptc/libarptc.h
new file mode 100644
index 0000000..b7d3d36
--- /dev/null
+++ b/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 */