1 /* 2 * Copyright (C) 2012 by Darren Reed. 3 * 4 * See the IPFILTER.LICENCE file for details on licencing. 5 * 6 * @(#)ip_fil.h 1.35 6/5/96 7 * $Id$ 8 */ 9 10 #ifndef __IP_SCAN_H__ 11 #define __IP_SCAN_H__ 1 12 13 #ifdef sun 14 # include <sys/ioccom.h> 15 #endif 16 17 #define IPSCAN_NAME "/dev/ipscan" 18 #define IPL_SCAN IPSCAN_NAME 19 #define ISC_TLEN 16 20 21 22 struct fr_info; 23 struct frentry; 24 struct ip; 25 struct ipstate; 26 27 28 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) 29 # define SIOCADSCA _IOWR('r', 60, struct ipscan *) 30 # define SIOCRMSCA _IOWR('r', 61, struct ipscan *) 31 # define SIOCGSCST _IOWR('r', 62, struct ipscan *) 32 #else 33 # define SIOCADSCA _IOWR(r, 60, struct ipscan *) 34 # define SIOCRMSCA _IOWR(r, 61, struct ipscan *) 35 # define SIOCGSCST _IOWR(r, 62, struct ipscan *) 36 #endif 37 38 struct action { 39 int act_val; /* what to do */ 40 struct in_addr act_ip; /* redirect IP# */ 41 u_short act_port; /* redirect port number */ 42 int act_else; /* what to do */ 43 struct in_addr act_eip; /* redirect IP# */ 44 u_short act_eport; /* redirect port number */ 45 }; 46 47 48 typedef struct sinfo { 49 char s_txt[ISC_TLEN]; /* text to match */ 50 char s_msk[ISC_TLEN]; /* mask of the above to check */ 51 int s_len; /* length of server text */ 52 } sinfo_t; 53 54 55 typedef struct ipscan { 56 struct ipscan *ipsc_next; 57 struct ipscan **ipsc_pnext; 58 char ipsc_tag[ISC_TLEN]; /* table entry protocol tag */ 59 sinfo_t ipsc_si[2]; /* client/server side information */ 60 int ipsc_hits; /* times this has been matched */ 61 int ipsc_active; /* # of active matches */ 62 int ipsc_fref; /* # of references from filter rules */ 63 int ipsc_sref; /* # of references from state entries */ 64 struct action ipsc_act; 65 } ipscan_t; 66 67 68 #define ipsc_cl ipsc_si[0] 69 #define ipsc_sl ipsc_si[1] 70 #define ipsc_ctxt ipsc_cl.s_txt 71 #define ipsc_cmsk ipsc_cl.s_msk 72 #define ipsc_clen ipsc_cl.s_len 73 #define ipsc_stxt ipsc_sl.s_txt 74 #define ipsc_smsk ipsc_sl.s_msk 75 #define ipsc_slen ipsc_sl.s_len 76 #define ipsc_action ipsc_act.act_val 77 #define ipsc_ip ipsc_act.act_ip 78 #define ipsc_port ipsc_act.act_port 79 #define ipsc_else ipsc_act.act_else 80 #define ipsc_eip ipsc_act.act_eip 81 #define ipsc_eport ipsc_act.act_eport 82 83 #define ISC_A_NONE 0 84 #define ISC_A_TRACK 1 85 #define ISC_A_CLOSE 2 86 #define ISC_A_REDIRECT 3 87 88 89 typedef struct ipscanstat { 90 struct ipscan *iscs_list; 91 u_long iscs_acted; 92 u_long iscs_else; 93 int iscs_entries; 94 } ipscanstat_t; 95 96 97 extern int ipf_scan_ioctl __P((ipf_main_softc_t *, caddr_t, ioctlcmd_t, int, int, void *)); 98 extern int ipf_scan_init __P((void)); 99 extern int ipf_scan_attachis __P((struct ipstate *)); 100 extern int ipf_scan_attachfr __P((struct frentry *)); 101 extern int ipf_scan_detachis __P((struct ipstate *)); 102 extern int ipf_scan_detachfr __P((struct frentry *)); 103 extern int ipf_scan_packet __P((struct fr_info *, struct ipstate *)); 104 extern void ipf_scan_unload __P((ipf_main_softc_t *)); 105 106 #endif /* __IP_SCAN_H__ */ 107