259 lines
7.2 KiB
C
259 lines
7.2 KiB
C
/* $NetBSD: ip_state.h,v 1.24 2004/03/28 09:00:57 martti Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1995-2001 by Darren Reed.
|
|
*
|
|
* See the IPFILTER.LICENCE file for details on licencing.
|
|
*
|
|
* @(#)ip_state.h 1.3 1/12/96 (C) 1995 Darren Reed
|
|
* Id: ip_state.h,v 2.68 2003/09/24 16:04:58 darrenr Exp
|
|
*/
|
|
#ifndef _NETINET_IP_STATE_H_
|
|
#define _NETINET_IP_STATE_H_
|
|
|
|
#if defined(__STDC__) || defined(__GNUC__)
|
|
# define SIOCDELST _IOW('r', 61, struct ipfobj)
|
|
#else
|
|
# define SIOCDELST _IOW(r, 61, struct ipfobj)
|
|
#endif
|
|
|
|
struct ipscan;
|
|
|
|
#ifndef IPSTATE_SIZE
|
|
# define IPSTATE_SIZE 5737
|
|
#endif
|
|
#ifndef IPSTATE_MAX
|
|
# define IPSTATE_MAX 4013 /* Maximum number of states held */
|
|
#endif
|
|
|
|
#define PAIRS(s1,d1,s2,d2) ((((s1) == (s2)) && ((d1) == (d2))) ||\
|
|
(((s1) == (d2)) && ((d1) == (s2))))
|
|
#define IPPAIR(s1,d1,s2,d2) PAIRS((s1).s_addr, (d1).s_addr, \
|
|
(s2).s_addr, (d2).s_addr)
|
|
|
|
|
|
typedef struct ipstate {
|
|
ipfmutex_t is_lock;
|
|
struct ipstate *is_next;
|
|
struct ipstate **is_pnext;
|
|
struct ipstate *is_hnext;
|
|
struct ipstate **is_phnext;
|
|
struct ipstate **is_me;
|
|
void *is_ifp[4];
|
|
void *is_sync;
|
|
struct nat *is_nat[2];
|
|
frentry_t *is_rule;
|
|
struct ipftq *is_tqehead[2];
|
|
struct ipscan *is_isc;
|
|
U_QUAD_T is_pkts[4];
|
|
U_QUAD_T is_bytes[4];
|
|
U_QUAD_T is_icmppkts[4];
|
|
struct ipftqent is_sti;
|
|
u_int is_frage[2];
|
|
int is_ref; /* reference count */
|
|
int is_isninc[2];
|
|
u_short is_sumd[2];
|
|
i6addr_t is_src;
|
|
i6addr_t is_dst;
|
|
u_int is_pass;
|
|
u_char is_p; /* Protocol */
|
|
u_char is_v;
|
|
u_32_t is_hv;
|
|
u_32_t is_tag;
|
|
u_32_t is_opt; /* packet options set */
|
|
u_32_t is_optmsk; /* " " mask */
|
|
u_short is_sec; /* security options set */
|
|
u_short is_secmsk; /* " " mask */
|
|
u_short is_auth; /* authentication options set */
|
|
u_short is_authmsk; /* " " mask */
|
|
union {
|
|
icmpinfo_t is_ics;
|
|
tcpinfo_t is_ts;
|
|
udpinfo_t is_us;
|
|
greinfo_t is_ug;
|
|
} is_ps;
|
|
u_32_t is_flags;
|
|
int is_flx[2][2];
|
|
u_32_t is_rulen; /* rule number when created */
|
|
u_32_t is_s0[2];
|
|
u_short is_smsk[2];
|
|
char is_group[FR_GROUPLEN];
|
|
char is_sbuf[2][16];
|
|
char is_ifname[4][LIFNAMSIZ];
|
|
} ipstate_t;
|
|
|
|
#define is_die is_sti.tqe_die
|
|
#define is_state is_sti.tqe_state
|
|
#define is_touched is_sti.tqe_touched
|
|
#define is_saddr is_src.in4.s_addr
|
|
#define is_daddr is_dst.in4.s_addr
|
|
#define is_icmp is_ps.is_ics
|
|
#define is_type is_icmp.ici_type
|
|
#define is_code is_icmp.ici_code
|
|
#define is_tcp is_ps.is_ts
|
|
#define is_udp is_ps.is_us
|
|
#define is_send is_tcp.ts_data[0].td_end
|
|
#define is_dend is_tcp.ts_data[1].td_end
|
|
#define is_maxswin is_tcp.ts_data[0].td_maxwin
|
|
#define is_maxdwin is_tcp.ts_data[1].td_maxwin
|
|
#define is_maxsend is_tcp.ts_data[0].td_maxend
|
|
#define is_maxdend is_tcp.ts_data[1].td_maxend
|
|
#define is_swinscale is_tcp.ts_data[0].td_winscale
|
|
#define is_dwinscale is_tcp.ts_data[1].td_winscale
|
|
#define is_swinflags is_tcp.ts_data[0].td_winflags
|
|
#define is_dwinflags is_tcp.ts_data[1].td_winflags
|
|
#define is_sport is_tcp.ts_sport
|
|
#define is_dport is_tcp.ts_dport
|
|
#define is_ifpin is_ifp[0]
|
|
#define is_ifpout is_ifp[2]
|
|
#define is_gre is_ps.is_ug
|
|
|
|
#define IS_WSPORT SI_W_SPORT /* 0x00100 */
|
|
#define IS_WDPORT SI_W_DPORT /* 0x00200 */
|
|
#define IS_WSADDR SI_W_SADDR /* 0x00400 */
|
|
#define IS_WDADDR SI_W_DADDR /* 0x00800 */
|
|
#define IS_NEWFR SI_NEWFR /* 0x01000 */
|
|
#define IS_CLONE SI_CLONE /* 0x02000 */
|
|
#define IS_CLONED SI_CLONED /* 0x04000 */
|
|
#define IS_TCPFSM 0x10000
|
|
#define IS_STRICT 0x20000
|
|
#define IS_ISNSYN 0x40000
|
|
#define IS_ISNACK 0x80000
|
|
/*
|
|
* IS_SC flags are for scan-operations that need to be recognised in state.
|
|
*/
|
|
#define IS_SC_CLIENT 0x10000000
|
|
#define IS_SC_SERVER 0x20000000
|
|
#define IS_SC_MATCHC 0x40000000
|
|
#define IS_SC_MATCHS 0x80000000
|
|
#define IS_SC_MATCHALL (IS_SC_MATCHC|IS_SC_MATCHC)
|
|
#define IS_SC_ALL (IS_SC_MATCHC|IS_SC_MATCHC|IS_SC_CLIENT|IS_SC_SERVER)
|
|
|
|
/*
|
|
* Flags that can be passed into fr_addstate
|
|
*/
|
|
#define IS_INHERITED 0x0fffff00
|
|
|
|
#define TH_OPENING (TH_SYN|TH_ACK)
|
|
/*
|
|
* is_flags:
|
|
* Bits 0 - 3 are use as a mask with the current packet's bits to check for
|
|
* whether it is short, tcp/udp, a fragment or the presence of IP options.
|
|
* Bits 4 - 7 are set from the initial packet and contain what the packet
|
|
* anded with bits 0-3 must match.
|
|
* Bits 8,9 are used to indicate wildcard source/destination port matching.
|
|
* Bits 10,11 are reserved for other wildcard flag compatibility.
|
|
* Bits 12,13 are for scaning.
|
|
*/
|
|
|
|
typedef struct ipstate_save {
|
|
void *ips_next;
|
|
struct ipstate ips_is;
|
|
struct frentry ips_fr;
|
|
} ipstate_save_t;
|
|
|
|
#define ips_rule ips_is.is_rule
|
|
|
|
|
|
typedef struct ipslog {
|
|
U_QUAD_T isl_pkts[4];
|
|
U_QUAD_T isl_bytes[4];
|
|
i6addr_t isl_src;
|
|
i6addr_t isl_dst;
|
|
u_32_t isl_tag;
|
|
u_short isl_type;
|
|
union {
|
|
u_short isl_filler[2];
|
|
u_short isl_ports[2];
|
|
u_short isl_icmp;
|
|
} isl_ps;
|
|
u_char isl_v;
|
|
u_char isl_p;
|
|
u_char isl_flags;
|
|
u_char isl_state[2];
|
|
u_32_t isl_rulen;
|
|
char isl_group[FR_GROUPLEN];
|
|
} ipslog_t;
|
|
|
|
#define isl_sport isl_ps.isl_ports[0]
|
|
#define isl_dport isl_ps.isl_ports[1]
|
|
#define isl_itype isl_ps.isl_icmp
|
|
|
|
#define ISL_NEW 0
|
|
#define ISL_CLONE 1
|
|
#define ISL_EXPIRE 0xffff
|
|
#define ISL_FLUSH 0xfffe
|
|
#define ISL_REMOVE 0xfffd
|
|
#define ISL_INTERMEDIATE 0xfffc
|
|
#define ISL_KILLED 0xfffb
|
|
#define ISL_ORPHAN 0xfffa
|
|
|
|
|
|
typedef struct ips_stat {
|
|
u_long iss_hits;
|
|
u_long iss_miss;
|
|
u_long iss_max;
|
|
u_long iss_maxref;
|
|
u_long iss_tcp;
|
|
u_long iss_udp;
|
|
u_long iss_icmp;
|
|
u_long iss_nomem;
|
|
u_long iss_expire;
|
|
u_long iss_fin;
|
|
u_long iss_active;
|
|
u_long iss_logged;
|
|
u_long iss_logfail;
|
|
u_long iss_inuse;
|
|
u_long iss_wild;
|
|
u_long iss_killed;
|
|
u_long iss_ticks;
|
|
u_long iss_bucketfull;
|
|
int iss_statesize;
|
|
int iss_statemax;
|
|
ipstate_t **iss_table;
|
|
ipstate_t *iss_list;
|
|
u_long *iss_bucketlen;
|
|
} ips_stat_t;
|
|
|
|
|
|
extern u_long fr_tcpidletimeout;
|
|
extern u_long fr_tcpclosewait;
|
|
extern u_long fr_tcplastack;
|
|
extern u_long fr_tcptimeout;
|
|
extern u_long fr_tcpclosed;
|
|
extern u_long fr_tcphalfclosed;
|
|
extern u_long fr_udptimeout;
|
|
extern u_long fr_udpacktimeout;
|
|
extern u_long fr_icmptimeout;
|
|
extern u_long fr_icmpacktimeout;
|
|
extern int fr_statemax;
|
|
extern int fr_statesize;
|
|
extern int fr_state_lock;
|
|
extern int fr_state_maxbucket;
|
|
extern int fr_state_maxbucket_reset;
|
|
extern ipstate_t *ips_list;
|
|
extern ipftq_t *ips_utqe;
|
|
extern ipftq_t ips_tqtqb[IPF_TCP_NSTATES];
|
|
|
|
extern int fr_stateinit __P((void));
|
|
extern ipstate_t *fr_addstate __P((fr_info_t *, ipstate_t **, u_int));
|
|
extern frentry_t *fr_checkstate __P((struct fr_info *, u_32_t *));
|
|
extern ipstate_t *fr_stlookup __P((fr_info_t *, tcphdr_t *, ipftq_t **));
|
|
extern void fr_statesync __P((void *));
|
|
extern void fr_timeoutstate __P((void));
|
|
extern int fr_tcp_age __P((struct ipftqent *, struct fr_info *,
|
|
struct ipftq *, int));
|
|
extern int fr_tcpinwindow __P((struct fr_info *, struct tcpdata *,
|
|
struct tcpdata *, struct tcphdr *, int));
|
|
extern void fr_stateunload __P((void));
|
|
extern void ipstate_log __P((struct ipstate *, u_int));
|
|
extern int fr_state_ioctl __P((caddr_t, ioctlcmd_t, int));
|
|
extern void fr_stinsert __P((struct ipstate *, int));
|
|
extern void fr_sttab_init __P((struct ipftq *));
|
|
extern void fr_sttab_destroy __P((struct ipftq *));
|
|
extern void fr_updatestate __P((fr_info_t *, ipstate_t *, ipftq_t *));
|
|
extern void fr_statederef __P((fr_info_t *, ipstate_t **));
|
|
extern void fr_setstatequeue __P((ipstate_t *, int));
|
|
|
|
#endif /* _NETINET_IP_STATE_H_ */
|