41d4822677
silly differences between the NetBSD copy of the code and the vendor branch, keeping only those which are necessary. Of those differences that currently exist, several "portability to NetBSD" issues, which will be fed back to the ipfilter author.
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/* $NetBSD: ip_proxy.h,v 1.3 1997/05/28 00:17:23 thorpej Exp $ */
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/*
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* (C)opyright 1997 by Darren Reed.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and due credit is given
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* to the original author and the contributors.
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*
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* Id: ip_proxy.h,v 2.0.2.2 1997/05/24 07:36:44 darrenr Exp
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*/
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#ifndef __IP_PROXY_H__
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#define __IP_PROXY_H__
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#ifndef SOLARIS
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#define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
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#endif
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#define APR_LABELLEN 16
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#define AP_SESS_SIZE 53
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struct nat;
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struct ipnat;
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typedef struct ap_tcp {
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u_short apt_sport; /* source port */
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u_short apt_dport; /* destination port */
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short apt_seqoff; /* sequence # difference */
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short apt_ackoff; /* ack # difference */
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tcp_seq apt_after; /* don't change seq-off until after this */
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char apt_state[2]; /* connection state */
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} ap_tcp_t;
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typedef struct ap_udp {
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u_short apu_sport; /* source port */
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u_short apu_dport; /* destination port */
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} ap_udp_t;
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typedef struct ap_session {
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struct aproxy *aps_apr;
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struct in_addr aps_src; /* source IP# */
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struct in_addr aps_dst; /* destination IP# */
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u_char aps_p; /* protocol */
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union {
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struct ap_tcp apu_tcp;
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struct ap_udp apu_udp;
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} aps_un;
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u_int aps_flags;
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QUAD_T aps_bytes; /* bytes sent */
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QUAD_T aps_pkts; /* packets sent */
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time_t aps_tout; /* time left before expiring */
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void *aps_data; /* private data */
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int aps_psiz; /* size of private data */
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struct ap_session *aps_next;
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} ap_session_t ;
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#define aps_sport aps_un.apu_tcp.apt_sport
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#define aps_dport aps_un.apu_tcp.apt_dport
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#define aps_seqoff aps_un.apu_tcp.apt_seqoff
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#define aps_ackoff aps_un.apu_tcp.apt_ackoff
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#define aps_sumoff aps_un.apu_tcp.apt_sumoff
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#define aps_state aps_un.apu_tcp.apt_state
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#define aps_after aps_un.apu_tcp.apt_after
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typedef struct aproxy {
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char apr_label[APR_LABELLEN]; /* Proxy label # */
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char apr_p; /* protocol */
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int apr_ref; /* +1 per rule referencing it */
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int apr_flags;
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int (* apr_init) __P((fr_info_t *, ip_t *, tcphdr_t *,
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ap_session_t *, struct nat *));
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int (* apr_inpkt) __P((fr_info_t *, ip_t *, tcphdr_t *,
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ap_session_t *, struct nat *));
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int (* apr_outpkt) __P((fr_info_t *, ip_t *, tcphdr_t *,
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ap_session_t *, struct nat *));
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} aproxy_t;
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#define APR_DELETE 1
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extern ap_session_t *ap_sess_tab[AP_SESS_SIZE];
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extern aproxy_t ap_proxies[];
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extern void ap_unload __P((void));
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extern void ap_free __P((aproxy_t *));
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extern void aps_free __P((ap_session_t *));
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extern int ap_check __P((ip_t *, tcphdr_t *, fr_info_t *, struct nat *));
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extern aproxy_t *ap_match __P((char, char *));
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extern int ap_ok __P((ip_t *, tcphdr_t *, struct ipnat *));
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#endif /* __IP_PROXY_H__ */
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