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-rw-r--r--contrib/ipfilter/ip_proxy.h89
1 files changed, 89 insertions, 0 deletions
diff --git a/contrib/ipfilter/ip_proxy.h b/contrib/ipfilter/ip_proxy.h
new file mode 100644
index 000000000000..2d7175491b39
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+++ b/contrib/ipfilter/ip_proxy.h
@@ -0,0 +1,89 @@
+/*
+ * (C)opyright 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 2.0.2.2 1997/05/24 07:36:44 darrenr Exp $
+ */
+
+#ifndef __IP_PROXY_H__
+#define __IP_PROXY_H__
+
+#ifndef SOLARIS
+#define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
+#endif
+
+#define APR_LABELLEN 16
+#define AP_SESS_SIZE 53
+
+struct nat;
+
+typedef struct ap_tcp {
+ u_short apt_sport; /* source port */
+ u_short apt_dport; /* destination port */
+ short apt_seqoff; /* sequence # difference */
+ short apt_ackoff; /* ack # difference */
+ tcp_seq apt_after; /* don't change seq-off until after this */
+ 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 */
+ time_t 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_seqoff aps_un.apu_tcp.apt_seqoff
+#define aps_ackoff aps_un.apu_tcp.apt_ackoff
+#define aps_sumoff aps_un.apu_tcp.apt_sumoff
+#define aps_state aps_un.apu_tcp.apt_state
+#define aps_after aps_un.apu_tcp.apt_after
+
+
+typedef struct aproxy {
+ char apr_label[APR_LABELLEN]; /* Proxy label # */
+ 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 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((char, char *));
+
+#endif /* __IP_PROXY_H__ */