182 lines
4.8 KiB
C
182 lines
4.8 KiB
C
/*
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* Copyright (C) 1995-1997 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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* @(#)ip_nat.h 1.5 2/4/96
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* $Id: ip_nat.h,v 2.0.2.23.2.3 1998/05/23 18:52:44 darrenr Exp $
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*/
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#ifndef __IP_NAT_H__
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#define __IP_NAT_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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#if defined(__STDC__) || defined(__GNUC__)
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#define SIOCADNAT _IOW('r', 80, struct ipnat)
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#define SIOCRMNAT _IOW('r', 81, struct ipnat)
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#define SIOCGNATS _IOR('r', 82, struct natstat)
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#define SIOCGNATL _IOWR('r', 83, struct natlookup)
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#define SIOCGFRST _IOR('r', 84, struct ipfrstat)
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#define SIOCGIPST _IOR('r', 85, struct ips_stat)
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#define SIOCFLNAT _IOWR('r', 86, int)
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#define SIOCCNATL _IOWR('r', 87, int)
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#else
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#define SIOCADNAT _IOW(r, 80, struct ipnat)
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#define SIOCRMNAT _IOW(r, 81, struct ipnat)
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#define SIOCGNATS _IOR(r, 82, struct natstat)
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#define SIOCGNATL _IOWR(r, 83, struct natlookup)
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#define SIOCGFRST _IOR(r, 84, struct ipfrstat)
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#define SIOCGIPST _IOR(r, 85, struct ips_stat)
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#define SIOCFLNAT _IOWR(r, 86, int)
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#define SIOCCNATL _IOWR(r, 87, int)
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#endif
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#define NAT_SIZE 367
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#ifndef APR_LABELLEN
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#define APR_LABELLEN 16
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#endif
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typedef struct nat {
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u_long nat_age;
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int nat_flags;
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u_32_t nat_sumd;
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u_32_t nat_ipsumd;
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void *nat_data;
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struct in_addr nat_inip;
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struct in_addr nat_outip;
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struct in_addr nat_oip; /* other ip */
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U_QUAD_T nat_pkts;
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U_QUAD_T nat_bytes;
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u_short nat_oport; /* other port */
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u_short nat_inport;
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u_short nat_outport;
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u_short nat_use;
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u_char nat_state[2];
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struct ipnat *nat_ptr;
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struct nat *nat_next;
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struct nat *nat_hnext[2];
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struct nat **nat_hstart[2];
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void *nat_ifp;
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int nat_dir;
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} nat_t;
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typedef struct ipnat {
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struct ipnat *in_next;
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void *in_ifp;
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void *in_apr;
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u_int in_space;
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u_int in_use;
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struct in_addr in_nextip;
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u_short in_pnext;
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u_short in_flags;
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u_short in_port[2];
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struct in_addr in_in[2];
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struct in_addr in_out[2];
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int in_redir; /* 0 if it's a mapping, 1 if it's a hard redir */
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char in_ifname[IFNAMSIZ];
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char in_plabel[APR_LABELLEN]; /* proxy label */
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char in_p; /* protocol */
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u_short in_dport;
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} ipnat_t;
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#define in_pmin in_port[0] /* Also holds static redir port */
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#define in_pmax in_port[1]
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#define in_nip in_nextip.s_addr
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#define in_inip in_in[0].s_addr
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#define in_inmsk in_in[1].s_addr
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#define in_outip in_out[0].s_addr
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#define in_outmsk in_out[1].s_addr
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#define NAT_OUTBOUND 0
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#define NAT_INBOUND 1
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#define NAT_MAP 0x01
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#define NAT_REDIRECT 0x02
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#define NAT_BIMAP (NAT_MAP|NAT_REDIRECT)
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#define IPN_CMPSIZ (sizeof(struct in_addr) * 4 + sizeof(u_short) * 3 + \
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sizeof(int) + IFNAMSIZ + APR_LABELLEN + sizeof(char))
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typedef struct natlookup {
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struct in_addr nl_inip;
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struct in_addr nl_outip;
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struct in_addr nl_realip;
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int nl_flags;
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u_short nl_inport;
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u_short nl_outport;
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u_short nl_realport;
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} natlookup_t;
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typedef struct natstat {
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u_long ns_mapped[2];
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u_long ns_rules;
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u_long ns_added;
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u_long ns_expire;
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u_long ns_inuse;
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u_long ns_logged;
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u_long ns_logfail;
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nat_t **ns_table[2];
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ipnat_t *ns_list;
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} natstat_t;
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#define IPN_ANY 0x00
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#define IPN_TCP 0x01
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#define IPN_UDP 0x02
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#define IPN_TCPUDP 0x03
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#define IPN_DELETE 0x04
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#define IPN_ICMPERR 0x08
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typedef struct natlog {
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struct in_addr nl_origip;
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struct in_addr nl_outip;
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struct in_addr nl_inip;
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u_short nl_origport;
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u_short nl_outport;
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u_short nl_inport;
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u_short nl_type;
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int nl_rule;
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U_QUAD_T nl_pkts;
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U_QUAD_T nl_bytes;
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} natlog_t;
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#define NL_NEWMAP NAT_MAP
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#define NL_NEWRDR NAT_REDIRECT
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#define NL_EXPIRE 0xffff
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extern void ip_natsync __P((void *));
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extern u_long fr_defnatage;
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extern u_long fr_defnaticmpage;
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extern nat_t *nat_table[2][NAT_SIZE];
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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extern int nat_ioctl __P((caddr_t, u_long, int));
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#else
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extern int nat_ioctl __P((caddr_t, int, int));
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#endif
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extern nat_t *nat_new __P((ipnat_t *, ip_t *, fr_info_t *, u_short, int));
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extern nat_t *nat_outlookup __P((void *, int, struct in_addr, u_short,
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struct in_addr, u_short));
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extern nat_t *nat_inlookup __P((void *, int, struct in_addr, u_short,
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struct in_addr, u_short));
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extern nat_t *nat_lookupredir __P((natlookup_t *));
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extern nat_t *nat_lookupmapip __P((void *, int, struct in_addr, u_short,
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struct in_addr, u_short));
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extern nat_t *nat_icmpinlookup __P((ip_t *, fr_info_t *));
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extern nat_t *nat_icmpin __P((ip_t *, fr_info_t *, int *));
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extern int ip_natout __P((ip_t *, int, fr_info_t *));
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extern int ip_natin __P((ip_t *, int, fr_info_t *));
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extern void ip_natunload __P((void)), ip_natexpire __P((void));
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extern void nat_log __P((struct nat *, u_short));
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extern void fix_incksum __P((u_short *, u_32_t));
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extern void fix_outcksum __P((u_short *, u_32_t));
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#endif /* __IP_NAT_H__ */
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