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-rw-r--r--include/libiptc/ipt_kernel_headers.h27
-rw-r--r--include/libiptc/libip6tc.h161
-rw-r--r--include/libiptc/libiptc.h173
-rw-r--r--include/libiptc/libxtc.h33
4 files changed, 394 insertions, 0 deletions
diff --git a/include/libiptc/ipt_kernel_headers.h b/include/libiptc/ipt_kernel_headers.h
new file mode 100644
index 0000000..18861fe
--- /dev/null
+++ b/include/libiptc/ipt_kernel_headers.h
@@ -0,0 +1,27 @@
+/* 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 <net/if.h>
+#include <sys/types.h>
+#else /* libc5 */
+#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/libiptc/libip6tc.h b/include/libiptc/libip6tc.h
new file mode 100644
index 0000000..33ec69d
--- /dev/null
+++ b/include/libiptc/libip6tc.h
@@ -0,0 +1,161 @@
+#ifndef _LIBIP6TC_H
+#define _LIBIP6TC_H
+/* Library which manipulates firewall rules. Version 0.2. */
+
+#include <linux/types.h>
+#include <libiptc/ipt_kernel_headers.h>
+#ifdef __cplusplus
+# include <climits>
+#else
+# include <limits.h> /* INT_MAX in ip6_tables.h */
+#endif
+#include <linux/netfilter_ipv6/ip6_tables.h>
+
+#ifndef IP6T_MIN_ALIGN
+#define IP6T_MIN_ALIGN (__alignof__(struct ip6t_entry))
+#endif
+#define IP6T_ALIGN(s) (((s) + (IP6T_MIN_ALIGN-1)) & ~(IP6T_MIN_ALIGN-1))
+
+struct ip6tc_handle;
+
+typedef char ip6t_chainlabel[32];
+
+#define IP6TC_LABEL_ACCEPT "ACCEPT"
+#define IP6TC_LABEL_DROP "DROP"
+#define IP6TC_LABEL_QUEUE "QUEUE"
+#define IP6TC_LABEL_RETURN "RETURN"
+
+/* Does this chain exist? */
+int ip6tc_is_chain(const char *chain, struct ip6tc_handle *const handle);
+
+/* Take a snapshot of the rules. Returns NULL on error. */
+struct ip6tc_handle *ip6tc_init(const char *tablename);
+
+/* Cleanup after ip6tc_init(). */
+void ip6tc_free(struct ip6tc_handle *h);
+
+/* Iterator functions to run through the chains. Returns NULL at end. */
+const char *ip6tc_first_chain(struct ip6tc_handle *handle);
+const char *ip6tc_next_chain(struct ip6tc_handle *handle);
+
+/* Get first rule in the given chain: NULL for empty chain. */
+const struct ip6t_entry *ip6tc_first_rule(const char *chain,
+ struct ip6tc_handle *handle);
+
+/* Returns NULL when rules run out. */
+const struct ip6t_entry *ip6tc_next_rule(const struct ip6t_entry *prev,
+ struct ip6tc_handle *handle);
+
+/* Returns a pointer to the target name of this position. */
+const char *ip6tc_get_target(const struct ip6t_entry *e,
+ struct ip6tc_handle *handle);
+
+/* Is this a built-in chain? */
+int ip6tc_builtin(const char *chain, struct ip6tc_handle *const handle);
+
+/* Get the policy of a given built-in chain */
+const char *ip6tc_get_policy(const char *chain,
+ struct ip6t_counters *counters,
+ struct ip6tc_handle *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,
+ struct ip6tc_handle *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,
+ struct ip6tc_handle *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,
+ struct ip6tc_handle *handle);
+
+/* Delete the first rule in `chain' which matches `fw'. */
+int ip6tc_delete_entry(const ip6t_chainlabel chain,
+ const struct ip6t_entry *origfw,
+ unsigned char *matchmask,
+ struct ip6tc_handle *handle);
+
+/* Delete the rule in position `rulenum' in `chain'. */
+int ip6tc_delete_num_entry(const ip6t_chainlabel chain,
+ unsigned int rulenum,
+ struct ip6tc_handle *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 *,
+ struct ip6tc_handle *handle);
+
+/* Flushes the entries in the given chain (ie. empties chain). */
+int ip6tc_flush_entries(const ip6t_chainlabel chain,
+ struct ip6tc_handle *handle);
+
+/* Zeroes the counters in a chain. */
+int ip6tc_zero_entries(const ip6t_chainlabel chain,
+ struct ip6tc_handle *handle);
+
+/* Creates a new chain. */
+int ip6tc_create_chain(const ip6t_chainlabel chain,
+ struct ip6tc_handle *handle);
+
+/* Deletes a chain. */
+int ip6tc_delete_chain(const ip6t_chainlabel chain,
+ struct ip6tc_handle *handle);
+
+/* Renames a chain. */
+int ip6tc_rename_chain(const ip6t_chainlabel oldname,
+ const ip6t_chainlabel newname,
+ struct ip6tc_handle *handle);
+
+/* Sets the policy on a built-in chain. */
+int ip6tc_set_policy(const ip6t_chainlabel chain,
+ const ip6t_chainlabel policy,
+ struct ip6t_counters *counters,
+ struct ip6tc_handle *handle);
+
+/* Get the number of references to this chain */
+int ip6tc_get_references(unsigned int *ref, const ip6t_chainlabel chain,
+ struct ip6tc_handle *handle);
+
+/* read packet and byte counters for a specific rule */
+struct ip6t_counters *ip6tc_read_counter(const ip6t_chainlabel chain,
+ unsigned int rulenum,
+ struct ip6tc_handle *handle);
+
+/* zero packet and byte counters for a specific rule */
+int ip6tc_zero_counter(const ip6t_chainlabel chain,
+ unsigned int rulenum,
+ struct ip6tc_handle *handle);
+
+/* set packet and byte counters for a specific rule */
+int ip6tc_set_counter(const ip6t_chainlabel chain,
+ unsigned int rulenum,
+ struct ip6t_counters *counters,
+ struct ip6tc_handle *handle);
+
+/* Makes the actual changes. */
+int ip6tc_commit(struct ip6tc_handle *handle);
+
+/* Get raw socket. */
+int ip6tc_get_raw_socket(void);
+
+/* 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);
+
+extern void dump_entries6(struct ip6tc_handle *const);
+
+#endif /* _LIBIP6TC_H */
diff --git a/include/libiptc/libiptc.h b/include/libiptc/libiptc.h
new file mode 100644
index 0000000..5d782da
--- /dev/null
+++ b/include/libiptc/libiptc.h
@@ -0,0 +1,173 @@
+#ifndef _LIBIPTC_H
+#define _LIBIPTC_H
+/* Library which manipulates filtering rules. */
+
+#include <linux/types.h>
+#include <libiptc/ipt_kernel_headers.h>
+#ifdef __cplusplus
+# include <climits>
+#else
+# include <limits.h> /* INT_MAX in ip_tables.h */
+#endif
+#include <linux/netfilter_ipv4/ip_tables.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef IPT_MIN_ALIGN
+/* ipt_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 IPT_MIN_ALIGN (__alignof__(struct ipt_entry))
+#endif
+
+#define IPT_ALIGN(s) (((s) + ((IPT_MIN_ALIGN)-1)) & ~((IPT_MIN_ALIGN)-1))
+
+struct iptc_handle;
+
+typedef char ipt_chainlabel[32];
+
+#define IPTC_LABEL_ACCEPT "ACCEPT"
+#define IPTC_LABEL_DROP "DROP"
+#define IPTC_LABEL_QUEUE "QUEUE"
+#define IPTC_LABEL_RETURN "RETURN"
+
+/* Does this chain exist? */
+int iptc_is_chain(const char *chain, struct iptc_handle *const handle);
+
+/* Take a snapshot of the rules. Returns NULL on error. */
+struct iptc_handle *iptc_init(const char *tablename);
+
+/* Cleanup after iptc_init(). */
+void iptc_free(struct iptc_handle *h);
+
+/* Iterator functions to run through the chains. Returns NULL at end. */
+const char *iptc_first_chain(struct iptc_handle *handle);
+const char *iptc_next_chain(struct iptc_handle *handle);
+
+/* Get first rule in the given chain: NULL for empty chain. */
+const struct ipt_entry *iptc_first_rule(const char *chain,
+ struct iptc_handle *handle);
+
+/* Returns NULL when rules run out. */
+const struct ipt_entry *iptc_next_rule(const struct ipt_entry *prev,
+ struct iptc_handle *handle);
+
+/* Returns a pointer to the target name of this entry. */
+const char *iptc_get_target(const struct ipt_entry *e,
+ struct iptc_handle *handle);
+
+/* Is this a built-in chain? */
+int iptc_builtin(const char *chain, struct iptc_handle *const handle);
+
+/* Get the policy of a given built-in chain */
+const char *iptc_get_policy(const char *chain,
+ struct ipt_counters *counter,
+ struct iptc_handle *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 `e' in chain `chain' into position `rulenum'. */
+int iptc_insert_entry(const ipt_chainlabel chain,
+ const struct ipt_entry *e,
+ unsigned int rulenum,
+ struct iptc_handle *handle);
+
+/* Atomically replace rule `rulenum' in `chain' with `e'. */
+int iptc_replace_entry(const ipt_chainlabel chain,
+ const struct ipt_entry *e,
+ unsigned int rulenum,
+ struct iptc_handle *handle);
+
+/* Append entry `e' to chain `chain'. Equivalent to insert with
+ rulenum = length of chain. */
+int iptc_append_entry(const ipt_chainlabel chain,
+ const struct ipt_entry *e,
+ struct iptc_handle *handle);
+
+/* Delete the first rule in `chain' which matches `e', subject to
+ matchmask (array of length == origfw) */
+int iptc_delete_entry(const ipt_chainlabel chain,
+ const struct ipt_entry *origfw,
+ unsigned char *matchmask,
+ struct iptc_handle *handle);
+
+/* Delete the rule in position `rulenum' in `chain'. */
+int iptc_delete_num_entry(const ipt_chainlabel chain,
+ unsigned int rulenum,
+ struct iptc_handle *handle);
+
+/* Check the packet `e' on chain `chain'. Returns the verdict, or
+ NULL and sets errno. */
+const char *iptc_check_packet(const ipt_chainlabel chain,
+ struct ipt_entry *entry,
+ struct iptc_handle *handle);
+
+/* Flushes the entries in the given chain (ie. empties chain). */
+int iptc_flush_entries(const ipt_chainlabel chain,
+ struct iptc_handle *handle);
+
+/* Zeroes the counters in a chain. */
+int iptc_zero_entries(const ipt_chainlabel chain,
+ struct iptc_handle *handle);
+
+/* Creates a new chain. */
+int iptc_create_chain(const ipt_chainlabel chain,
+ struct iptc_handle *handle);
+
+/* Deletes a chain. */
+int iptc_delete_chain(const ipt_chainlabel chain,
+ struct iptc_handle *handle);
+
+/* Renames a chain. */
+int iptc_rename_chain(const ipt_chainlabel oldname,
+ const ipt_chainlabel newname,
+ struct iptc_handle *handle);
+
+/* Sets the policy on a built-in chain. */
+int iptc_set_policy(const ipt_chainlabel chain,
+ const ipt_chainlabel policy,
+ struct ipt_counters *counters,
+ struct iptc_handle *handle);
+
+/* Get the number of references to this chain */
+int iptc_get_references(unsigned int *ref,
+ const ipt_chainlabel chain,
+ struct iptc_handle *handle);
+
+/* read packet and byte counters for a specific rule */
+struct ipt_counters *iptc_read_counter(const ipt_chainlabel chain,
+ unsigned int rulenum,
+ struct iptc_handle *handle);
+
+/* zero packet and byte counters for a specific rule */
+int iptc_zero_counter(const ipt_chainlabel chain,
+ unsigned int rulenum,
+ struct iptc_handle *handle);
+
+/* set packet and byte counters for a specific rule */
+int iptc_set_counter(const ipt_chainlabel chain,
+ unsigned int rulenum,
+ struct ipt_counters *counters,
+ struct iptc_handle *handle);
+
+/* Makes the actual changes. */
+int iptc_commit(struct iptc_handle *handle);
+
+/* Get raw socket. */
+int iptc_get_raw_socket(void);
+
+/* Translates errno numbers into more human-readable form than strerror. */
+const char *iptc_strerror(int err);
+
+extern void dump_entries(struct iptc_handle *const);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _LIBIPTC_H */
diff --git a/include/libiptc/libxtc.h b/include/libiptc/libxtc.h
new file mode 100644
index 0000000..3701018
--- /dev/null
+++ b/include/libiptc/libxtc.h
@@ -0,0 +1,33 @@
+#ifndef _LIBXTC_H
+#define _LIBXTC_H
+/* Library which manipulates filtering rules. */
+
+#include <libiptc/ipt_kernel_headers.h>
+#include <linux/netfilter/x_tables.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef XT_MIN_ALIGN
+/* xt_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 XT_MIN_ALIGN (__alignof__(struct xt_entry))
+#endif
+
+#ifndef XT_ALIGN
+#define XT_ALIGN(s) (((s) + ((XT_MIN_ALIGN)-1)) & ~((XT_MIN_ALIGN)-1))
+#endif
+
+#define XTC_LABEL_ACCEPT "ACCEPT"
+#define XTC_LABEL_DROP "DROP"
+#define XTC_LABEL_QUEUE "QUEUE"
+#define XTC_LABEL_RETURN "RETURN"
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LIBXTC_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 23:56:49 +0000