| /* |
| * 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 |
| * $Id$ |
| */ |
| #ifndef __IP_STATE_H__ |
| #define __IP_STATE_H__ |
| |
| #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) |
| # 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; |
| 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[2]; /* packet options set */ |
| u_32_t is_optmsk[2]; /* " " 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]; |
| #ifdef IPFILTER_XID |
| char is_rpcstate; |
| uint32_t is_xid; /* RPC XID */ |
| uint32_t is_prog; /* RPC program number */ |
| #endif |
| } ipstate_t; |
| |
| #ifdef IPFILTER_XID |
| #define RPC_NONE 0 |
| #define RPC_WAITRPC 1 |
| #define RPC_WAITRESPONSE 2 |
| #define RPC_ACCEPT 3 |
| #define RPC_REJECT 4 |
| #endif |
| |
| #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_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_call is_gre.gs_call |
| |
| #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 |
| #define IS_STATESYNC 0x100000 |
| /* |
| * 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 ipf_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_STATECHANGE 2 |
| #define ISL_EXPIRE 0xffff |
| #define ISL_FLUSH 0xfffe |
| #define ISL_REMOVE 0xfffd |
| #define ISL_INTERMEDIATE 0xfffc |
| #define ISL_KILLED 0xfffb |
| #define ISL_ORPHAN 0xfffa |
| #define ISL_UNLOAD 0xfff9 |
| |
| |
| typedef struct ips_stat { |
| u_int iss_active; |
| u_int iss_active_proto[256]; |
| u_long iss_add_bad; |
| u_long iss_add_dup; |
| u_long iss_add_locked; |
| u_long iss_add_oow; |
| u_long iss_bucket_full; |
| u_long iss_check_bad; |
| u_long iss_check_miss; |
| u_long iss_check_nattag; |
| u_long iss_check_notag; |
| u_long iss_clone_nomem; |
| u_long iss_cloned; |
| u_long iss_expire; |
| u_long iss_fin; |
| u_long iss_flush_all; |
| u_long iss_flush_closing; |
| u_long iss_flush_queue; |
| u_long iss_flush_state; |
| u_long iss_flush_timeout; |
| u_long iss_hits; |
| u_long iss_icmp6_icmperr; |
| u_long iss_icmp6_miss; |
| u_long iss_icmp6_notinfo; |
| u_long iss_icmp6_notquery; |
| u_long iss_icmp_bad; |
| u_long iss_icmp_banned; |
| u_long iss_icmp_headblock; |
| u_long iss_icmp_hits; |
| u_long iss_icmp_icmperr; |
| u_long iss_icmp_miss; |
| u_long iss_icmp_notquery; |
| u_long iss_icmp_short; |
| u_long iss_icmp_toomany; |
| u_int iss_inuse; |
| ipstate_t *iss_list; |
| u_long iss_log_fail; |
| u_long iss_log_ok; |
| u_long iss_lookup_badifp; |
| u_long iss_lookup_badport; |
| u_long iss_lookup_miss; |
| u_long iss_max; |
| u_long iss_max_ref; |
| u_long iss_miss_mask; |
| u_long iss_nomem; |
| u_long iss_oow; |
| u_long iss_orphan; |
| u_long iss_proto[256]; |
| u_long iss_scan_block; |
| u_long iss_state_max; |
| u_long iss_state_size; |
| u_long iss_states[IPF_TCP_NSTATES]; |
| ipstate_t **iss_table; |
| u_long iss_tcp_closing; |
| u_long iss_tcp_oow; |
| u_long iss_tcp_rstadd; |
| u_long iss_tcp_toosmall; |
| u_long iss_tcp_badopt; |
| u_long iss_tcp_fsm; |
| u_long iss_tcp_strict; |
| ipftq_t *iss_tcptab; |
| u_int iss_ticks; |
| u_long iss_wild; |
| u_long iss_winsack; |
| u_int *iss_bucketlen; |
| } ips_stat_t; |
| |
| |
| #ifndef _KERNEL |
| extern void ipf_state_dump __P((ipf_main_softc_t *, void *)); |
| #endif |
| extern int ipf_tcp_age __P((struct ipftqent *, struct fr_info *, |
| struct ipftq *, int, int)); |
| extern int ipf_tcpinwindow __P((struct fr_info *, struct tcpdata *, |
| struct tcpdata *, tcphdr_t *, int)); |
| |
| extern int ipf_state_add __P((ipf_main_softc_t *, fr_info_t *, |
| ipstate_t **, u_int)); |
| extern frentry_t *ipf_state_check __P((struct fr_info *, u_32_t *)); |
| extern void ipf_state_deref __P((ipf_main_softc_t *, ipstate_t **)); |
| extern void ipf_state_expire __P((ipf_main_softc_t *)); |
| extern int ipf_state_flush __P((ipf_main_softc_t *, int, int)); |
| extern ipstate_t *ipf_state_lookup __P((fr_info_t *, tcphdr_t *, ipftq_t **)); |
| extern int ipf_state_init __P((void)); |
| extern void ipf_state_insert __P((ipf_main_softc_t *, struct ipstate *, int)); |
| extern int ipf_state_ioctl __P((ipf_main_softc_t *, caddr_t, ioctlcmd_t, int, int, void *)); |
| extern void ipf_state_log __P((ipf_main_softc_t *, struct ipstate *, u_int)); |
| extern int ipf_state_matchflush __P((ipf_main_softc_t *, caddr_t)); |
| extern int ipf_state_rehash __P((ipf_main_softc_t *, ipftuneable_t *, ipftuneval_t *)); |
| extern void ipf_state_setqueue __P((ipf_main_softc_t *, ipstate_t *, int)); |
| extern void ipf_state_setpending __P((ipf_main_softc_t *, ipstate_t *)); |
| extern int ipf_state_settimeout __P((struct ipf_main_softc_s *, ipftuneable_t *, ipftuneval_t *)); |
| extern void ipf_state_sync __P((ipf_main_softc_t *, void *)); |
| extern void ipf_state_update __P((fr_info_t *, ipstate_t *)); |
| |
| extern void ipf_sttab_init __P((ipf_main_softc_t *, struct ipftq *)); |
| extern void ipf_sttab_destroy __P((struct ipftq *)); |
| extern void ipf_state_setlock __P((void *, int)); |
| extern int ipf_state_main_load __P((void)); |
| extern int ipf_state_main_unload __P((void)); |
| extern void *ipf_state_soft_create __P((ipf_main_softc_t *)); |
| extern void ipf_state_soft_destroy __P((ipf_main_softc_t *, void *)); |
| extern int ipf_state_soft_init __P((ipf_main_softc_t *, void *)); |
| extern int ipf_state_soft_fini __P((ipf_main_softc_t *, void *)); |
| extern int ipf_state_main_load __P((void)); |
| extern ipftq_t *ipf_state_add_tq __P((ipf_main_softc_t *, int)); |
| |
| #endif /* __IP_STATE_H__ */ |