/* * Copyright (C) 1995-1997 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. * * @(#)ip_nat.h 1.5 2/4/96 * $Id: ip_nat.h,v 1.1.1.5 1998/06/20 18:17:53 peter Exp $ */ #ifndef __IP_NAT_H__ #define __IP_NAT_H__ #ifndef SOLARIS #define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4))) #endif #if defined(__STDC__) || defined(__GNUC__) #define SIOCADNAT _IOW('r', 80, struct ipnat) #define SIOCRMNAT _IOW('r', 81, struct ipnat) #define SIOCGNATS _IOR('r', 82, struct natstat) #define SIOCGNATL _IOWR('r', 83, struct natlookup) #define SIOCGFRST _IOR('r', 84, struct ipfrstat) #define SIOCGIPST _IOR('r', 85, struct ips_stat) #define SIOCFLNAT _IOWR('r', 86, int) #define SIOCCNATL _IOWR('r', 87, int) #else #define SIOCADNAT _IOW(r, 80, struct ipnat) #define SIOCRMNAT _IOW(r, 81, struct ipnat) #define SIOCGNATS _IOR(r, 82, struct natstat) #define SIOCGNATL _IOWR(r, 83, struct natlookup) #define SIOCGFRST _IOR(r, 84, struct ipfrstat) #define SIOCGIPST _IOR(r, 85, struct ips_stat) #define SIOCFLNAT _IOWR(r, 86, int) #define SIOCCNATL _IOWR(r, 87, int) #endif #define NAT_SIZE 367 #ifndef APR_LABELLEN #define APR_LABELLEN 16 #endif typedef struct nat { u_long nat_age; int nat_flags; u_32_t nat_sumd; u_32_t nat_ipsumd; void *nat_data; struct in_addr nat_inip; struct in_addr nat_outip; struct in_addr nat_oip; /* other ip */ U_QUAD_T nat_pkts; U_QUAD_T nat_bytes; u_short nat_oport; /* other port */ u_short nat_inport; u_short nat_outport; u_short nat_use; u_char nat_state[2]; struct ipnat *nat_ptr; struct nat *nat_next; struct nat *nat_hnext[2]; struct nat **nat_hstart[2]; void *nat_ifp; int nat_dir; } nat_t; typedef struct ipnat { struct ipnat *in_next; void *in_ifp; void *in_apr; u_int in_space; u_int in_use; struct in_addr in_nextip; u_short in_pnext; u_short in_flags; u_short in_port[2]; struct in_addr in_in[2]; struct in_addr in_out[2]; int in_redir; /* 0 if it's a mapping, 1 if it's a hard redir */ char in_ifname[IFNAMSIZ]; char in_plabel[APR_LABELLEN]; /* proxy label */ char in_p; /* protocol */ u_short in_dport; } ipnat_t; #define in_pmin in_port[0] /* Also holds static redir port */ #define in_pmax in_port[1] #define in_nip in_nextip.s_addr #define in_inip in_in[0].s_addr #define in_inmsk in_in[1].s_addr #define in_outip in_out[0].s_addr #define in_outmsk in_out[1].s_addr #define NAT_OUTBOUND 0 #define NAT_INBOUND 1 #define NAT_MAP 0x01 #define NAT_REDIRECT 0x02 #define NAT_BIMAP (NAT_MAP|NAT_REDIRECT) #define IPN_CMPSIZ (sizeof(struct in_addr) * 4 + sizeof(u_short) * 3 + \ sizeof(int) + IFNAMSIZ + APR_LABELLEN + sizeof(char)) typedef struct natlookup { struct in_addr nl_inip; struct in_addr nl_outip; struct in_addr nl_realip; int nl_flags; u_short nl_inport; u_short nl_outport; u_short nl_realport; } natlookup_t; typedef struct natstat { u_long ns_mapped[2]; u_long ns_rules; u_long ns_added; u_long ns_expire; u_long ns_inuse; u_long ns_logged; u_long ns_logfail; nat_t **ns_table[2]; ipnat_t *ns_list; } natstat_t; #define IPN_ANY 0x00 #define IPN_TCP 0x01 #define IPN_UDP 0x02 #define IPN_TCPUDP 0x03 #define IPN_DELETE 0x04 #define IPN_ICMPERR 0x08 typedef struct natlog { struct in_addr nl_origip; struct in_addr nl_outip; struct in_addr nl_inip; u_short nl_origport; u_short nl_outport; u_short nl_inport; u_short nl_type; int nl_rule; U_QUAD_T nl_pkts; U_QUAD_T nl_bytes; } natlog_t; #define NL_NEWMAP NAT_MAP #define NL_NEWRDR NAT_REDIRECT #define NL_EXPIRE 0xffff extern void ip_natsync __P((void *)); extern u_long fr_defnatage; extern u_long fr_defnaticmpage; extern nat_t *nat_table[2][NAT_SIZE]; #if defined(__NetBSD__) || defined(__OpenBSD__) || (__FreeBSD_version >= 300003) extern int nat_ioctl __P((caddr_t, u_long, int)); #else extern int nat_ioctl __P((caddr_t, int, int)); #endif extern nat_t *nat_new __P((ipnat_t *, ip_t *, fr_info_t *, u_short, int)); extern nat_t *nat_outlookup __P((void *, int, struct in_addr, u_short, struct in_addr, u_short)); extern nat_t *nat_inlookup __P((void *, int, struct in_addr, u_short, struct in_addr, u_short)); extern nat_t *nat_lookupredir __P((natlookup_t *)); extern nat_t *nat_lookupmapip __P((void *, int, struct in_addr, u_short, struct in_addr, u_short)); extern nat_t *nat_icmpinlookup __P((ip_t *, fr_info_t *)); extern nat_t *nat_icmpin __P((ip_t *, fr_info_t *, int *)); extern int ip_natout __P((ip_t *, int, fr_info_t *)); extern int ip_natin __P((ip_t *, int, fr_info_t *)); extern void ip_natunload __P((void)), ip_natexpire __P((void)); extern void nat_log __P((struct nat *, u_short)); extern void fix_incksum __P((u_short *, u_32_t)); extern void fix_outcksum __P((u_short *, u_32_t)); #endif /* __IP_NAT_H__ */