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freebsd-dev/sbin/ipf/common/ipf.h
Cy Schubert 915395a280 ipfilter: Introduce the new FORMAT_IF macro 
Interface names stored in the ipstate_t and ipnat_t structures can be
NULL. This occurs when an application, such as named, is running on the
firewall machine itself. For example an application, i.e. named, running
on the firewall itself will cause a state table display and NAT mapping
display to show a null ingress interface and its egress interface. This
is perfectly valid but confusing to human eyes. Rather than print
nothing, print "(null)".

MFC after:	1 week
2022-03-03 06:43:11 -08:00

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/* $FreeBSD$ */
/*
* Copyright (C) 2012 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* @(#)ipf.h 1.12 6/5/96
* $Id$
*/
#ifndef __IPF_H__
#define __IPF_H__
#include <sys/param.h>
#include <sys/types.h>
#include <sys/file.h>
/*
* This is a workaround for <sys/uio.h> troubles on FreeBSD, HPUX, OpenBSD.
* Needed here because on some systems <sys/uio.h> gets included by things
* like <sys/socket.h>
*/
#ifndef _KERNEL
# define ADD_KERNEL
# define _KERNEL
# define KERNEL
#endif
#include <sys/uio.h>
#ifdef ADD_KERNEL
# undef _KERNEL
# undef KERNEL
#endif
#include <sys/time.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
# include <netinet/tcp.h>
#include <netinet/udp.h>
#include <arpa/inet.h>
#include <errno.h>
#include <limits.h>
#include <netdb.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#if !defined(__SVR4) && !defined(__svr4__) && defined(sun)
# include <strings.h>
#endif
#include <string.h>
#include <unistd.h>
#include "netinet/ip_compat.h"
#include "netinet/ip_fil.h"
#include "netinet/ip_nat.h"
#include "netinet/ip_frag.h"
#include "netinet/ip_state.h"
#include "netinet/ip_proxy.h"
#include "netinet/ip_auth.h"
#include "netinet/ip_lookup.h"
#include "netinet/ip_pool.h"
#include "netinet/ip_scan.h"
#include "netinet/ip_htable.h"
#include "netinet/ip_sync.h"
#include "netinet/ip_dstlist.h"
#include "opts.h"
#ifndef __P
# define __P(x) x
#endif
#ifndef U_32_T
# define U_32_T 1
# if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) || \
defined(__sgi)
typedef u_int32_t u_32_t;
# else
# if defined(__alpha__) || defined(__alpha) || defined(_LP64)
typedef unsigned int u_32_t;
# else
# if SOLARIS2 >= 6
typedef uint32_t u_32_t;
# else
typedef unsigned int u_32_t;
# endif
# endif
# endif /* __NetBSD__ || __OpenBSD__ || __FreeBSD__ || __sgi */
#endif /* U_32_T */
#ifndef MAXHOSTNAMELEN
# define MAXHOSTNAMELEN 256
#endif
#define MAX_ICMPCODE 16
#define MAX_ICMPTYPE 19
#define PRINTF (void)printf
#define FPRINTF (void)fprintf
#define FORMAT_IF(_a) (_a != NULL ? _a : "(null)")
struct ipopt_names {
int on_value;
int on_bit;
int on_siz;
char *on_name;
};
typedef struct alist_s {
struct alist_s *al_next;
int al_not;
int al_family;
i6addr_t al_i6addr;
i6addr_t al_i6mask;
} alist_t;
#define al_addr al_i6addr.in4_addr
#define al_mask al_i6mask.in4_addr
#define al_1 al_addr
#define al_2 al_mask
typedef struct plist_s {
struct plist_s *pl_next;
int pl_compare;
u_short pl_port1;
u_short pl_port2;
} plist_t;
typedef struct {
u_short fb_c;
u_char fb_t;
u_char fb_f;
u_32_t fb_k;
} fakebpf_t;
typedef struct {
char *it_name;
int it_v4;
int it_v6;
} icmptype_t;
typedef struct wordtab {
char *w_word;
int w_value;
} wordtab_t;
typedef struct namelist {
struct namelist *na_next;
char *na_name;
int na_value;
} namelist_t;
typedef struct proxyrule {
struct proxyrule *pr_next;
char *pr_proxy;
char *pr_conf;
namelist_t *pr_names;
int pr_proto;
} proxyrule_t;
#if defined(__NetBSD__) || defined(__FreeBSD__) || \
SOLARIS
# include <stdarg.h>
typedef int (* ioctlfunc_t)(int, ioctlcmd_t, ...);
#else
typedef int (* ioctlfunc_t)(dev_t, ioctlcmd_t, void *);
#endif
typedef int (* addfunc_t)(int, ioctlfunc_t, void *);
typedef int (* copyfunc_t)(void *, void *, size_t);
extern char thishost[MAXHOSTNAMELEN];
extern char flagset[];
extern u_char flags[];
extern struct ipopt_names ionames[];
extern struct ipopt_names secclass[];
extern char *icmpcodes[MAX_ICMPCODE + 1];
extern char *icmptypes[MAX_ICMPTYPE + 1];
extern int use_inet6;
extern int lineNum;
extern int debuglevel;
extern struct ipopt_names v6ionames[];
extern icmptype_t icmptypelist[];
extern wordtab_t statefields[];
extern wordtab_t natfields[];
extern wordtab_t poolfields[];
extern int addicmp(char ***, struct frentry *, int);
extern int addipopt(char *, struct ipopt_names *, int, char *);
extern int addkeep(char ***, struct frentry *, int);
extern alist_t *alist_new(int, char *);
extern void alist_free(alist_t *);
extern void assigndefined(char *);
extern void binprint(void *, size_t);
extern u_32_t buildopts(char *, char *, int);
extern int checkrev(char *);
extern int connecttcp(char *, int);
extern int count6bits(u_32_t *);
extern int count4bits(u_32_t);
extern char *fac_toname(int);
extern int fac_findname(char *);
extern const char *familyname(const int);
extern void fill6bits(int, u_int *);
extern wordtab_t *findword(wordtab_t *, char *);
extern int ftov(int);
extern char *ipf_geterror(int, ioctlfunc_t *);
extern int genmask(int, char *, i6addr_t *);
extern int gethost(int, char *, i6addr_t *);
extern int geticmptype(int, char *);
extern int getport(struct frentry *, char *, u_short *, char *);
extern int getportproto(char *, int);
extern int getproto(char *);
extern char *getnattype(struct nat *);
extern char *getsumd(u_32_t);
extern u_32_t getoptbyname(char *);
extern u_32_t getoptbyvalue(int);
extern u_32_t getv6optbyname(char *);
extern u_32_t getv6optbyvalue(int);
extern char *icmptypename(int, int);
extern void initparse(void);
extern void ipf_dotuning(int, char *, ioctlfunc_t);
extern int ipf_addrule(int, ioctlfunc_t, void *);
extern void ipf_mutex_clean(void);
extern int ipf_parsefile(int, addfunc_t, ioctlfunc_t *, char *);
extern int ipf_parsesome(int, addfunc_t, ioctlfunc_t *, FILE *);
extern void ipf_perror(int, char *);
extern int ipf_perror_fd( int, ioctlfunc_t, char *);
extern void ipf_rwlock_clean(void);
extern char *ipf_strerror(int);
extern void ipferror(int, char *);
extern int ipmon_parsefile(char *);
extern int ipmon_parsesome(FILE *);
extern int ipnat_addrule(int, ioctlfunc_t, void *);
extern int ipnat_parsefile(int, addfunc_t, ioctlfunc_t, char *);
extern int ipnat_parsesome(int, addfunc_t, ioctlfunc_t, FILE *);
extern int ippool_parsefile(int, char *, ioctlfunc_t);
extern int ippool_parsesome(int, FILE *, ioctlfunc_t);
extern int kmemcpywrap(void *, void *, size_t);
extern char *kvatoname(ipfunc_t, ioctlfunc_t);
extern int load_dstlist(struct ippool_dst *, ioctlfunc_t,
ipf_dstnode_t *);
extern int load_dstlistnode(int, char *, struct ipf_dstnode *,
ioctlfunc_t);
extern alist_t *load_file(char *);
extern int load_hash(struct iphtable_s *, struct iphtent_s *,
ioctlfunc_t);
extern int load_hashnode(int, char *, struct iphtent_s *, int,
ioctlfunc_t);
extern alist_t *load_http(char *);
extern int load_pool(struct ip_pool_s *list, ioctlfunc_t);
extern int load_poolnode(int, char *, ip_pool_node_t *, int, ioctlfunc_t);
extern alist_t *load_url(char *);
extern alist_t *make_range(int, struct in_addr, struct in_addr);
extern void mb_hexdump(mb_t *, FILE *);
extern ipfunc_t nametokva(char *, ioctlfunc_t);
extern void nat_setgroupmap(struct ipnat *);
extern int ntomask(int, int, u_32_t *);
extern u_32_t optname(char ***, u_short *, int);
extern wordtab_t *parsefields(wordtab_t *, char *);
extern int *parseipfexpr(char *, char **);
extern int parsewhoisline(char *, addrfamily_t *, addrfamily_t *);
extern void pool_close(void);
extern int pool_fd(void);
extern int pool_ioctl(ioctlfunc_t, ioctlcmd_t, void *);
extern int pool_open(void);
extern char *portname(int, int);
extern int pri_findname(char *);
extern char *pri_toname(int);
extern void print_toif(int, char *, char *, struct frdest *);
extern void printaps(ap_session_t *, int, int);
extern void printaddr(int, int, char *, int, u_32_t *, u_32_t *);
extern void printbuf(char *, int, int);
extern void printfieldhdr(wordtab_t *, wordtab_t *);
extern void printfr(struct frentry *, ioctlfunc_t);
extern struct iphtable_s *printhash(struct iphtable_s *, copyfunc_t,
char *, int, wordtab_t *);
extern struct iphtable_s *printhash_live(iphtable_t *, int, char *,
int, wordtab_t *);
extern ippool_dst_t *printdstl_live(ippool_dst_t *, int, char *,
int, wordtab_t *);
extern void printhashdata(iphtable_t *, int);
extern struct iphtent_s *printhashnode(struct iphtable_s *,
struct iphtent_s *,
copyfunc_t, int, wordtab_t *);
extern void printhost(int, u_32_t *);
extern void printhostmask(int, u_32_t *, u_32_t *);
extern void printip(int, u_32_t *);
extern void printlog(struct frentry *);
extern void printlookup(char *, i6addr_t *addr, i6addr_t *mask);
extern void printmask(int, u_32_t *);
extern void printnataddr(int, char *, nat_addr_t *, int);
extern void printnatfield(nat_t *, int);
extern void printnatside(char *, nat_stat_side_t *);
extern void printpacket(int, mb_t *);
extern void printpacket6(int, mb_t *);
extern struct ippool_dst *printdstlist(struct ippool_dst *, copyfunc_t,
char *, int, ipf_dstnode_t *,
wordtab_t *);
extern void printdstlistdata(ippool_dst_t *, int);
extern ipf_dstnode_t *printdstlistnode(ipf_dstnode_t *, copyfunc_t,
int, wordtab_t *);
extern void printdstlistpolicy(ippool_policy_t);
extern struct ip_pool_s *printpool(struct ip_pool_s *, copyfunc_t,
char *, int, wordtab_t *);
extern struct ip_pool_s *printpool_live(struct ip_pool_s *, int,
char *, int, wordtab_t *);
extern void printpooldata(ip_pool_t *, int);
extern void printpoolfield(void *, int, int);
extern struct ip_pool_node *printpoolnode(struct ip_pool_node *,
int, wordtab_t *);
extern void printproto(struct protoent *, int, struct ipnat *);
extern void printportcmp(int, struct frpcmp *);
extern void printstatefield(ipstate_t *, int);
extern void printtqtable(ipftq_t *);
extern void printtunable(ipftune_t *);
extern void printunit(int);
extern void optprint(u_short *, u_long, u_long);
#ifdef USE_INET6
extern void optprintv6(u_short *, u_long, u_long);
#endif
extern int remove_hash(struct iphtable_s *, ioctlfunc_t);
extern int remove_hashnode(int, char *, struct iphtent_s *, ioctlfunc_t);
extern int remove_pool(ip_pool_t *, ioctlfunc_t);
extern int remove_poolnode(int, char *, ip_pool_node_t *, ioctlfunc_t);
extern u_char tcpflags(char *);
extern void printc(struct frentry *);
extern void printC(int);
extern void emit(int, int, void *, struct frentry *);
extern u_char secbit(int);
extern u_char seclevel(char *);
extern void printfraginfo(char *, struct ipfr *);
extern void printifname(char *, char *, void *);
extern char *hostname(int, void *);
extern struct ipstate *printstate(struct ipstate *, int, u_long);
extern void printsbuf(char *);
extern void printnat(struct ipnat *, int);
extern void printactiveaddress(int, char *, i6addr_t *, char *);
extern void printactivenat(struct nat *, int, u_long);
extern void printhostmap(struct hostmap *, u_int);
extern void printtcpflags(u_32_t, u_32_t);
extern void printipfexpr(int *);
extern void printstatefield(ipstate_t *, int);
extern void printstatefieldhdr(int);
extern int sendtrap_v1_0(int, char *, char *, int, time_t);
extern int sendtrap_v2_0(int, char *, char *, int);
extern int vtof(int);
extern void set_variable(char *, char *);
extern char *get_variable(char *, char **, int);
extern void resetlexer(void);
extern void debug(int, char *, ...);
extern void verbose(int, char *, ...);
extern void ipfkdebug(char *, ...);
extern void ipfkverbose(char *, ...);
#if SOLARIS
extern int gethostname(char *, int );
extern void sync(void);
#endif
#endif /* __IPF_H__ */
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