/*
 * Copyright (C) 2012 by Darren Reed.
 *
 * See the IPFILTER.LICENCE file for details on licencing.
 * $Id$
 */

#ifndef __IP_SCAN_H__
#define __IP_SCAN_H__ 1

#ifdef sun
# include <sys/ioccom.h>
#endif

#define IPSCAN_NAME     "/dev/ipscan"
#define IPL_SCAN        IPSCAN_NAME
#define ISC_TLEN        16


struct fr_info;
struct frentry;
struct ip;
struct ipstate;


# define        SIOCADSCA       _IOWR('r', 60, struct ipscan *)
# define        SIOCRMSCA       _IOWR('r', 61, struct ipscan *)
# define        SIOCGSCST       _IOWR('r', 62, struct ipscan *)

struct  action  {
        int             act_val;        /* what to do */
        struct  in_addr act_ip;         /* redirect IP# */
        u_short         act_port;       /* redirect port number */
        int             act_else;       /* what to do */
        struct  in_addr act_eip;        /* redirect IP# */
        u_short         act_eport;      /* redirect port number */
};


typedef struct  sinfo {
        char    s_txt[ISC_TLEN];        /* text to match */
        char    s_msk[ISC_TLEN];        /* mask of the above to check */
        int     s_len;                  /* length of server text */
} sinfo_t;


typedef struct  ipscan  {
        struct  ipscan  *ipsc_next;
        struct  ipscan  **ipsc_pnext;
        char            ipsc_tag[ISC_TLEN];     /* table entry protocol tag */
        sinfo_t         ipsc_si[2];     /* client/server side information */
        int             ipsc_hits;      /* times this has been matched */
        int             ipsc_active;    /* # of active matches */
        int             ipsc_fref;      /* # of references from filter rules */
        int             ipsc_sref;      /* # of references from state entries */
        struct  action  ipsc_act;
} ipscan_t;


#define ipsc_cl         ipsc_si[0]
#define ipsc_sl         ipsc_si[1]
#define ipsc_ctxt       ipsc_cl.s_txt
#define ipsc_cmsk       ipsc_cl.s_msk
#define ipsc_clen       ipsc_cl.s_len
#define ipsc_stxt       ipsc_sl.s_txt
#define ipsc_smsk       ipsc_sl.s_msk
#define ipsc_slen       ipsc_sl.s_len
#define ipsc_action     ipsc_act.act_val
#define ipsc_ip         ipsc_act.act_ip
#define ipsc_port       ipsc_act.act_port
#define ipsc_else       ipsc_act.act_else
#define ipsc_eip        ipsc_act.act_eip
#define ipsc_eport      ipsc_act.act_eport

#define ISC_A_NONE      0
#define ISC_A_TRACK     1
#define ISC_A_CLOSE     2
#define ISC_A_REDIRECT  3


typedef struct  ipscanstat      {
        struct  ipscan  *iscs_list;
        u_long          iscs_acted;
        u_long          iscs_else;
        int             iscs_entries;
} ipscanstat_t;


extern  int ipf_scan_ioctl(ipf_main_softc_t *, caddr_t, ioctlcmd_t, int, int, void *);
extern  int ipf_scan_init(void);
extern  int ipf_scan_attachis(struct ipstate *);
extern  int ipf_scan_attachfr(struct frentry *);
extern  int ipf_scan_detachis(struct ipstate *);
extern  int ipf_scan_detachfr(struct frentry *);
extern  int ipf_scan_packet(struct fr_info *, struct ipstate *);
extern  void ipf_scan_unload(ipf_main_softc_t *);

#endif /* __IP_SCAN_H__ */