#include <libiptc/libiptc.h>
#include <libiptc/libip6tc.h>
+#include <xtables.h>
+
+#include <dlfcn.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <sys/utsname.h>
#include "options.h"
+/* xtables interface */
+#if (XTABLES_VERSION_CODE == 10)
+# include "xtables-10.h"
+#elif (XTABLES_VERSION_CODE == 5)
+# include "xtables-5.h"
+#else
+# error "Unsupported xtables version"
+#endif
+
+/* libext.a interface */
+#define FW3_IPT_MODULES \
+ __ipt_module(comment) \
+ __ipt_module(conntrack) \
+ __ipt_module(icmp) \
+ __ipt_module(icmp6) \
+ __ipt_module(limit) \
+ __ipt_module(connlimit) \
+ __ipt_module(mac) \
+ __ipt_module(mark) \
+ __ipt_module(multiport) \
+ __ipt_module(set) \
+ __ipt_module(standard) \
+ __ipt_module(tcp) \
+ __ipt_module(time) \
+ __ipt_module(udp) \
+ __ipt_module(CT) \
+ __ipt_module(DNAT) \
+ __ipt_module(LOG) \
+ __ipt_module(MARK) \
+ __ipt_module(MASQUERADE) \
+ __ipt_module(REDIRECT) \
+ __ipt_module(REJECT) \
+ __ipt_module(SET) \
+ __ipt_module(SNAT) \
+ __ipt_module(TCPMSS)
+
+#ifdef DISABLE_IPV6
+#undef __ipt_module
+#define __ipt_module(x) \
+ extern void libxt_##x##_init(void) __attribute__((weak)); \
+ extern void libipt_##x##_init(void) __attribute__((weak));
+#else
+#undef __ipt_module
+#define __ipt_module(x) \
+ extern void libxt_##x##_init(void) __attribute__((weak)); \
+ extern void libipt_##x##_init(void) __attribute__((weak)); \
+ extern void libip6t_##x##_init(void) __attribute__((weak));
+#endif
+
+FW3_IPT_MODULES
+
+
+/* Required by certain extensions like SNAT and DNAT */
+extern int kernel_version;
+void get_kernel_version(void);
struct fw3_ipt_handle {
enum fw3_family family;
enum fw3_table table;
- struct xtc_handle *handle;
+ void *handle;
+
+ int libc;
+ void **libv;
};
-struct fw3_ipt_handle *fw3_ipt_open(enum fw3_family family, enum fw3_table table);
+struct fw3_ipt_rule {
+ struct fw3_ipt_handle *h;
+
+ union {
+ struct ipt_entry e;
+ struct ip6t_entry e6;
+ };
+
+ struct xtables_rule_match *matches;
+ struct xtables_target *target;
-void fw3_ipt_set_policy(struct fw3_ipt_handle *h, enum fw3_flag policy);
+ int argc;
+ char **argv;
+
+ uint32_t protocol;
+ bool protocol_loaded;
+};
+
+struct fw3_ipt_handle *fw3_ipt_open(enum fw3_family family,
+ enum fw3_table table);
+
+void fw3_ipt_set_policy(struct fw3_ipt_handle *h, const char *chain,
+ enum fw3_flag policy);
+
+
+void fw3_ipt_flush_chain(struct fw3_ipt_handle *h, const char *chain);
void fw3_ipt_delete_chain(struct fw3_ipt_handle *h, const char *chain);
-void fw3_ipt_delete_rules(struct fw3_ipt_handle *h, const char *target);
+
+void fw3_ipt_create_chain(struct fw3_ipt_handle *h, const char *fmt, ...);
+
void fw3_ipt_flush(struct fw3_ipt_handle *h);
void fw3_ipt_commit(struct fw3_ipt_handle *h);
+void fw3_ipt_close(struct fw3_ipt_handle *h);
+
+struct fw3_ipt_rule *fw3_ipt_rule_new(struct fw3_ipt_handle *h);
+
+void fw3_ipt_rule_proto(struct fw3_ipt_rule *r, struct fw3_protocol *proto);
+
+void fw3_ipt_rule_in_out(struct fw3_ipt_rule *r,
+ struct fw3_device *in, struct fw3_device *out);
+
+void fw3_ipt_rule_src_dest(struct fw3_ipt_rule *r,
+ struct fw3_address *src, struct fw3_address *dest);
+
+void fw3_ipt_rule_sport_dport(struct fw3_ipt_rule *r,
+ struct fw3_port *sp, struct fw3_port *dp);
+
+void fw3_ipt_rule_device(struct fw3_ipt_rule *r, const char *device, bool out);
+
+void fw3_ipt_rule_mac(struct fw3_ipt_rule *r, struct fw3_mac *mac);
+
+void fw3_ipt_rule_icmptype(struct fw3_ipt_rule *r, struct fw3_icmptype *icmp);
+
+void fw3_ipt_rule_limit(struct fw3_ipt_rule *r, struct fw3_limit *limit);
+
+void fw3_ipt_rule_ipset(struct fw3_ipt_rule *r, struct fw3_setmatch *match);
+
+void fw3_ipt_rule_time(struct fw3_ipt_rule *r, struct fw3_time *time);
+
+void fw3_ipt_rule_mark(struct fw3_ipt_rule *r, struct fw3_mark *mark);
+
+void fw3_ipt_rule_comment(struct fw3_ipt_rule *r, const char *fmt, ...);
+
+void fw3_ipt_rule_extra(struct fw3_ipt_rule *r, const char *extra);
+
+void fw3_ipt_rule_addarg(struct fw3_ipt_rule *r, bool inv,
+ const char *k, const char *v);
+
+struct fw3_ipt_rule * fw3_ipt_rule_create(struct fw3_ipt_handle *handle,
+ struct fw3_protocol *proto,
+ struct fw3_device *in,
+ struct fw3_device *out,
+ struct fw3_address *src,
+ struct fw3_address *dest);
+
+void __fw3_ipt_rule_append(struct fw3_ipt_rule *r, bool repl,
+ const char *fmt, ...);
+
+#define fw3_ipt_rule_append(rule, ...) \
+ __fw3_ipt_rule_append(rule, false, __VA_ARGS__)
+
+#define fw3_ipt_rule_replace(rule, ...) \
+ __fw3_ipt_rule_append(rule, true, __VA_ARGS__)
+
+static inline void
+fw3_ipt_rule_target(struct fw3_ipt_rule *r, const char *fmt, ...)
+{
+ va_list ap;
+ char buf[32];
+
+ va_start(ap, fmt);
+ vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
+ va_end(ap);
+
+ fw3_ipt_rule_addarg(r, false, "-j", buf);
+}
+
#endif