1 files changed, 93 insertions, 0 deletions
diff --git a/sys/netinet/ip_proxy.h b/sys/netinet/ip_proxy.h
new file mode 100644
index 00000000000..f802657bf1b
--- /dev/null
+++ b/sys/netinet/ip_proxy.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 1997 by Darren Reed.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and due credit is given
+ * to the original author and the contributors.
+ *
+ * $Id: ip_proxy.h,v 1.1 1998/01/26 04:10:45 dgregor Exp $
+ */
+
+#ifndef	__IP_PROXY_H__
+#define	__IP_PROXY_H__
+
+#ifndef SOLARIS
+#define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
+#endif
+
+#ifndef	APR_LABELLEN
+#define	APR_LABELLEN	16
+#endif
+#define	AP_SESS_SIZE	53
+
+struct	nat;
+struct	ipnat;
+
+typedef	struct	ap_tcp {
+	u_short	apt_sport;	/* source port */
+	u_short	apt_dport;	/* destination port */
+	short	apt_sel;	/* seqoff/after set selector */
+	short	apt_seqoff[2];	/* sequence # difference */
+	tcp_seq	apt_after[2];	/* don't change seq-off until after this */
+	u_char	apt_state[2];	/* connection state */
+} ap_tcp_t;
+
+typedef	struct	ap_udp {
+	u_short	apu_sport;	/* source port */
+	u_short	apu_dport;	/* destination port */
+} ap_udp_t;
+
+typedef	struct ap_session {
+	struct	aproxy	*aps_apr;
+	struct	in_addr	aps_src;	/* source IP# */
+	struct	in_addr	aps_dst;	/* destination IP# */
+	u_char	aps_p;		/* protocol */
+	union {
+		struct	ap_tcp	apu_tcp;
+		struct	ap_udp	apu_udp;
+	} aps_un;
+	u_int	aps_flags;
+	QUAD_T	aps_bytes;	/* bytes sent */
+	QUAD_T	aps_pkts;	/* packets sent */
+	u_long	aps_tout;	/* time left before expiring */
+	void	*aps_data;	/* private data */
+	int	aps_psiz;	/* size of private data */
+	struct	ap_session	*aps_next;
+} ap_session_t ;
+
+#define	aps_sport	aps_un.apu_tcp.apt_sport
+#define	aps_dport	aps_un.apu_tcp.apt_dport
+#define	aps_sel		aps_un.apu_tcp.apt_sel
+#define	aps_seqoff	aps_un.apu_tcp.apt_seqoff
+#define	aps_after	aps_un.apu_tcp.apt_after
+#define	aps_state	aps_un.apu_tcp.apt_state
+
+
+typedef	struct	aproxy	{
+	char	apr_label[APR_LABELLEN];	/* Proxy label # */
+	u_char	apr_p;		/* protocol */
+	int	apr_ref;	/* +1 per rule referencing it */
+	int	apr_flags;
+	int	(* apr_init) __P((fr_info_t *, ip_t *, tcphdr_t *,
+				   ap_session_t *, struct nat *));
+	int	(* apr_inpkt) __P((fr_info_t *, ip_t *, tcphdr_t *,
+				   ap_session_t *, struct nat *));
+	int	(* apr_outpkt) __P((fr_info_t *, ip_t *, tcphdr_t *,
+				    ap_session_t *, struct nat *));
+} aproxy_t;
+
+#define	APR_DELETE	1
+
+
+extern	ap_session_t	*ap_sess_tab[AP_SESS_SIZE];
+extern	aproxy_t	ap_proxies[];
+
+extern	int	ap_ok __P((ip_t *, tcphdr_t *, struct ipnat *));
+extern	void	ap_unload __P((void));
+extern	void	ap_free __P((aproxy_t *));
+extern	void	aps_free __P((ap_session_t *));
+extern	int	ap_check __P((ip_t *, tcphdr_t *, fr_info_t *, struct nat *));
+extern	aproxy_t	*ap_match __P((u_char, char *));
+extern	void	ap_expire __P((void));
+
+#endif /* __IP_PROXY_H__ */