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Diffstat (limited to 'contrib/ipfilter/ip_nat.h')
| -rw-r--r-- | contrib/ipfilter/ip_nat.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/contrib/ipfilter/ip_nat.h b/contrib/ipfilter/ip_nat.h new file mode 100644 index 0000000..add4a9a --- /dev/null +++ b/contrib/ipfilter/ip_nat.h @@ -0,0 +1,171 @@ +/* + * (C)opyright 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 2.0.2.12 1997/05/24 07:35:20 darrenr Exp $ + */ + +#ifndef __IP_NAT_H__ +#define __IP_NAT_H__ + +#ifndef __IP_PROXY_H__ +#include "netinet/ip_proxy.h" +#endif + +#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 + +typedef struct nat { + u_long nat_age; + int nat_flags; + u_long nat_sumd; + u_long nat_ipsumd; + struct ipfr *nat_frag; + 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; + 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]; + struct aproxy *in_apr; + 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)) + +typedef struct natlookup { + struct in_addr nl_inip; + struct in_addr nl_outip; + u_short nl_inport; + u_short nl_outport; +} 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 + + +typedef struct natlog { + struct timeval nl_tv; + 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 u_long fr_defnatage; +extern nat_t *nat_table[2][NAT_SIZE]; +extern int nat_ioctl __P((caddr_t, int, int)); +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 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_long)); +extern void fix_outcksum __P((u_short *, u_long)); +#endif /* __IP_NAT_H__ */ |
