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/* $OpenBSD: pfctl_parser.h,v 1.118 2021/10/25 14:50:29 sashan Exp $ */
/*
* Copyright (c) 2001 Daniel Hartmeier
* Copyright (c) 2002 - 2013 Henning Brauer <henning@openbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef _PFCTL_PARSER_H_
#define _PFCTL_PARSER_H_
#define PF_OSFP_FILE "/etc/pf.os"
#define PF_OPT_DISABLE 0x00001
#define PF_OPT_ENABLE 0x00002
#define PF_OPT_VERBOSE 0x00004
#define PF_OPT_NOACTION 0x00008
#define PF_OPT_QUIET 0x00010
#define PF_OPT_CLRRULECTRS 0x00020
#define PF_OPT_USEDNS 0x00040
#define PF_OPT_VERBOSE2 0x00080
#define PF_OPT_DUMMYACTION 0x00100
#define PF_OPT_DEBUG 0x00200
#define PF_OPT_SHOWALL 0x00400
#define PF_OPT_OPTIMIZE 0x00800
#define PF_OPT_NODNS 0x01000
#define PF_OPT_RECURSE 0x04000
#define PF_OPT_PORTNAMES 0x08000
#define PF_OPT_IGNFAIL 0x10000
#define PF_TH_ALL 0xFF
#define PF_NAT_PROXY_PORT_LOW 50001
#define PF_NAT_PROXY_PORT_HIGH 65535
#define PF_OPTIMIZE_BASIC 0x0001
#define PF_OPTIMIZE_PROFILE 0x0002
#define FCNT_NAMES { \
"searches", \
"inserts", \
"removals", \
NULL \
}
struct pfr_buffer; /* forward definition */
struct pfctl {
int dev;
int opts;
int optimize;
int asd; /* anchor stack depth */
int bn; /* brace number */
int brace;
int tdirty; /* kernel dirty */
#define PFCTL_ANCHOR_STACK_DEPTH 64
struct pf_anchor *astack[PFCTL_ANCHOR_STACK_DEPTH];
struct pfioc_queue *pqueue;
struct pfr_buffer *trans;
struct pf_anchor *anchor, *alast;
const char *ruleset;
/* 'set foo' options */
u_int32_t timeout[PFTM_MAX];
u_int32_t limit[PF_LIMIT_MAX];
u_int32_t debug;
u_int32_t hostid;
u_int32_t reassemble;
u_int8_t syncookies;
u_int8_t syncookieswat[2]; /* lowat, hiwat */
char *ifname;
u_int8_t timeout_set[PFTM_MAX];
u_int8_t limit_set[PF_LIMIT_MAX];
u_int8_t debug_set;
u_int8_t hostid_set;
u_int8_t ifname_set;
u_int8_t reass_set;
u_int8_t syncookies_set;
u_int8_t syncookieswat_set;
};
struct node_if {
char ifname[IFNAMSIZ];
u_int8_t not;
u_int8_t dynamic; /* antispoof */
u_int8_t use_rdomain;
u_int ifa_flags;
int rdomain;
struct node_if *next;
struct node_if *tail;
};
struct node_host {
struct pf_addr_wrap addr;
struct pf_addr bcast;
struct pf_addr peer;
sa_family_t af;
u_int8_t not;
u_int32_t ifindex; /* link-local IPv6 addrs */
u_int16_t weight; /* load balancing weight */
char *ifname;
u_int ifa_flags;
struct node_host *next;
struct node_host *tail;
};
void freehostlist(struct node_host *);
struct node_os {
char *os;
pf_osfp_t fingerprint;
struct node_os *next;
struct node_os *tail;
};
struct node_queue_bw {
u_int32_t bw_absolute;
u_int16_t bw_percent;
};
struct node_hfsc_sc {
struct node_queue_bw m1; /* slope of 1st segment; bps */
u_int d; /* x-projection of m1; msec */
struct node_queue_bw m2; /* slope of 2nd segment; bps */
u_int8_t used;
};
struct node_hfsc_opts {
struct node_hfsc_sc realtime;
struct node_hfsc_sc linkshare;
struct node_hfsc_sc upperlimit;
int flags;
};
struct node_queue_opt {
int qtype;
union {
struct priq_opts priq_opts;
struct node_hfsc_opts hfsc_opts;
} data;
};
SIMPLEQ_HEAD(node_tinithead, node_tinit);
struct node_tinit { /* table initializer */
SIMPLEQ_ENTRY(node_tinit) entries;
struct node_host *host;
char *file;
};
/* optimizer created tables */
struct pf_opt_tbl {
char pt_name[PF_TABLE_NAME_SIZE];
int pt_rulecount;
int pt_generated;
u_int32_t pt_flags;
u_int32_t pt_refcnt;
struct node_tinithead pt_nodes;
struct pfr_buffer *pt_buf;
};
/* optimizer pf_rule container */
struct pf_opt_rule {
struct pf_rule por_rule;
struct pf_opt_tbl *por_src_tbl;
struct pf_opt_tbl *por_dst_tbl;
u_int64_t por_profile_count;
TAILQ_ENTRY(pf_opt_rule) por_entry;
TAILQ_ENTRY(pf_opt_rule) por_skip_entry[PF_SKIP_COUNT];
};
TAILQ_HEAD(pf_opt_queue, pf_opt_rule);
extern TAILQ_HEAD(pf_qihead, pfctl_qsitem) qspecs, rootqs;
struct pfctl_qsitem {
TAILQ_ENTRY(pfctl_qsitem) entries;
struct pf_queuespec qs;
struct pf_qihead children;
int matches;
};
struct pfctl_watermarks {
u_int32_t hi;
u_int32_t lo;
};
void copy_satopfaddr(struct pf_addr *, struct sockaddr *);
int pfctl_rules(int, char *, int, int, char *, struct pfr_buffer *);
int pfctl_optimize_ruleset(struct pfctl *, struct pf_ruleset *);
int pf_opt_create_table(struct pfctl *, struct pf_opt_tbl *);
int add_opt_table(struct pfctl *, struct pf_opt_tbl **, sa_family_t,
struct pf_rule_addr *, char *);
void pfctl_add_rule(struct pfctl *, struct pf_rule *);
int pfctl_set_timeout(struct pfctl *, const char *, int, int);
int pfctl_set_reassembly(struct pfctl *, int, int);
int pfctl_set_syncookies(struct pfctl *, u_int8_t,
struct pfctl_watermarks *);
int pfctl_set_optimization(struct pfctl *, const char *);
int pfctl_set_limit(struct pfctl *, const char *, unsigned int);
int pfctl_set_logif(struct pfctl *, char *);
void pfctl_set_hostid(struct pfctl *, u_int32_t);
int pfctl_set_debug(struct pfctl *, char *);
int pfctl_set_interface_flags(struct pfctl *, char *, int, int);
int parse_config(char *, struct pfctl *);
int parse_flags(char *);
int pfctl_load_anchors(int, struct pfctl *, struct pfr_buffer *);
int pfctl_load_queues(struct pfctl *);
int pfctl_add_queue(struct pfctl *, struct pf_queuespec *);
struct pfctl_qsitem * pfctl_find_queue(char *, struct pf_qihead *);
void print_pool(struct pf_pool *, u_int16_t, u_int16_t, sa_family_t, int, int);
void print_src_node(struct pf_src_node *, int);
void print_rule(struct pf_rule *, const char *, int);
void print_tabledef(const char *, int, int, struct node_tinithead *);
void print_status(struct pf_status *, struct pfctl_watermarks *, int);
void print_queuespec(struct pf_queuespec *);
int pfctl_define_table(char *, int, int, const char *, struct pfr_buffer *,
u_int32_t);
void pfctl_expand_label_nr(struct pf_rule *, unsigned int);
void pfctl_clear_fingerprints(int, int);
int pfctl_file_fingerprints(int, int, const char *);
pf_osfp_t pfctl_get_fingerprint(const char *);
int pfctl_load_fingerprints(int, int);
char *pfctl_lookup_fingerprint(pf_osfp_t, char *, size_t);
void pfctl_show_fingerprints(int);
struct icmptypeent {
const char *name;
u_int8_t type;
};
struct icmpcodeent {
const char *name;
u_int8_t type;
u_int8_t code;
};
const struct icmptypeent *geticmptypebynumber(u_int8_t, u_int8_t);
const struct icmptypeent *geticmptypebyname(char *, u_int8_t);
const struct icmpcodeent *geticmpcodebynumber(u_int8_t, u_int8_t, u_int8_t);
const struct icmpcodeent *geticmpcodebyname(u_long, char *, u_int8_t);
int string_to_loglevel(const char *);
const char *loglevel_to_string(int);
struct pf_timeout {
const char *name;
int timeout;
};
extern const struct pf_timeout pf_timeouts[];
void set_ipmask(struct node_host *, int);
int check_netmask(struct node_host *, sa_family_t);
int unmask(struct pf_addr *);
struct node_host *gen_dynnode(struct node_host *, sa_family_t);
void ifa_load(void);
unsigned int ifa_nametoindex(const char *);
char *ifa_indextoname(unsigned int, char *);
struct node_host *ifa_exists(const char *);
struct node_host *ifa_lookup(const char *, int);
struct node_host *host(const char *, int);
int append_addr(struct pfr_buffer *, char *, int, int);
int append_addr_host(struct pfr_buffer *,
struct node_host *, int, int);
#endif /* _PFCTL_PARSER_H_ */
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