303 lines
8.6 KiB
C
303 lines
8.6 KiB
C
/* $OpenBSD: pfctl_parser.h,v 1.119 2024/01/15 07:23:32 sashan Exp $ */
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/*
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* Copyright (c) 2001 Daniel Hartmeier
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* Copyright (c) 2002 - 2013 Henning Brauer <henning@openbsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _PFCTL_PARSER_H_
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#define _PFCTL_PARSER_H_
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#define PF_OSFP_FILE "/etc/pf.os"
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#define PF_OPT_DISABLE 0x00001
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#define PF_OPT_ENABLE 0x00002
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#define PF_OPT_VERBOSE 0x00004
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#define PF_OPT_NOACTION 0x00008
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#define PF_OPT_QUIET 0x00010
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#define PF_OPT_CLRRULECTRS 0x00020
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#define PF_OPT_USEDNS 0x00040
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#define PF_OPT_VERBOSE2 0x00080
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#define PF_OPT_DUMMYACTION 0x00100
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#define PF_OPT_DEBUG 0x00200
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#define PF_OPT_SHOWALL 0x00400
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#define PF_OPT_OPTIMIZE 0x00800
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#define PF_OPT_NODNS 0x01000
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#define PF_OPT_RECURSE 0x04000
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#define PF_OPT_PORTNAMES 0x08000
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#define PF_OPT_IGNFAIL 0x10000
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#define PF_OPT_CALLSHOW 0x20000
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#define PF_TH_ALL 0xFF
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#define PF_NAT_PROXY_PORT_LOW 50001
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#define PF_NAT_PROXY_PORT_HIGH 65535
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#define PF_OPTIMIZE_BASIC 0x0001
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#define PF_OPTIMIZE_PROFILE 0x0002
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#define FCNT_NAMES { \
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"searches", \
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"inserts", \
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"removals", \
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NULL \
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}
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struct pfr_buffer; /* forward definition */
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struct pfctl {
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int dev;
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int opts;
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int optimize;
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int asd; /* anchor stack depth */
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int bn; /* brace number */
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int brace;
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int tdirty; /* kernel dirty */
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#define PFCTL_ANCHOR_STACK_DEPTH 64
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struct pf_anchor *astack[PFCTL_ANCHOR_STACK_DEPTH];
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struct pfioc_queue *pqueue;
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struct pfr_buffer *trans;
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struct pf_anchor *anchor, *alast;
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const char *ruleset;
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/* 'set foo' options */
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u_int32_t timeout[PFTM_MAX];
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u_int32_t limit[PF_LIMIT_MAX];
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u_int32_t debug;
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u_int32_t hostid;
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u_int32_t reassemble;
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u_int8_t syncookies;
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u_int8_t syncookieswat[2]; /* lowat, hiwat */
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char *ifname;
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u_int8_t timeout_set[PFTM_MAX];
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u_int8_t limit_set[PF_LIMIT_MAX];
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u_int8_t debug_set;
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u_int8_t hostid_set;
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u_int8_t ifname_set;
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u_int8_t reass_set;
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u_int8_t syncookies_set;
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u_int8_t syncookieswat_set;
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};
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struct node_if {
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char ifname[IFNAMSIZ];
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u_int8_t not;
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u_int8_t dynamic; /* antispoof */
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u_int8_t use_rdomain;
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u_int ifa_flags;
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int rdomain;
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struct node_if *next;
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struct node_if *tail;
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};
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struct node_host {
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struct pf_addr_wrap addr;
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struct pf_addr bcast;
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struct pf_addr peer;
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sa_family_t af;
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u_int8_t not;
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u_int32_t ifindex; /* link-local IPv6 addrs */
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u_int16_t weight; /* load balancing weight */
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char *ifname;
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u_int ifa_flags;
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struct node_host *next;
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struct node_host *tail;
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};
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void freehostlist(struct node_host *);
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struct node_os {
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char *os;
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pf_osfp_t fingerprint;
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struct node_os *next;
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struct node_os *tail;
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};
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struct node_queue_bw {
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u_int32_t bw_absolute;
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u_int16_t bw_percent;
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};
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struct node_hfsc_sc {
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struct node_queue_bw m1; /* slope of 1st segment; bps */
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u_int d; /* x-projection of m1; msec */
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struct node_queue_bw m2; /* slope of 2nd segment; bps */
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u_int8_t used;
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};
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struct node_hfsc_opts {
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struct node_hfsc_sc realtime;
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struct node_hfsc_sc linkshare;
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struct node_hfsc_sc upperlimit;
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int flags;
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};
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struct node_queue_opt {
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int qtype;
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union {
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struct priq_opts priq_opts;
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struct node_hfsc_opts hfsc_opts;
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} data;
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};
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SIMPLEQ_HEAD(node_tinithead, node_tinit);
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struct node_tinit { /* table initializer */
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SIMPLEQ_ENTRY(node_tinit) entries;
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struct node_host *host;
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char *file;
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};
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/* optimizer created tables */
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struct pf_opt_tbl {
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char pt_name[PF_TABLE_NAME_SIZE];
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int pt_rulecount;
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int pt_generated;
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u_int32_t pt_flags;
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u_int32_t pt_refcnt;
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struct node_tinithead pt_nodes;
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struct pfr_buffer *pt_buf;
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};
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/* optimizer pf_rule container */
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struct pf_opt_rule {
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struct pf_rule por_rule;
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struct pf_opt_tbl *por_src_tbl;
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struct pf_opt_tbl *por_dst_tbl;
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u_int64_t por_profile_count;
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TAILQ_ENTRY(pf_opt_rule) por_entry;
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TAILQ_ENTRY(pf_opt_rule) por_skip_entry[PF_SKIP_COUNT];
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};
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TAILQ_HEAD(pf_opt_queue, pf_opt_rule);
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extern TAILQ_HEAD(pf_qihead, pfctl_qsitem) qspecs, rootqs;
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struct pfctl_qsitem {
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TAILQ_ENTRY(pfctl_qsitem) entries;
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struct pf_queuespec qs;
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struct pf_qihead children;
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int matches;
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};
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struct pfctl_watermarks {
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u_int32_t hi;
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u_int32_t lo;
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};
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void copy_satopfaddr(struct pf_addr *, struct sockaddr *);
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int pfctl_rules(int, char *, int, int, char *, struct pfr_buffer *);
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int pfctl_optimize_ruleset(struct pfctl *, struct pf_ruleset *);
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int pf_opt_create_table(struct pfctl *, struct pf_opt_tbl *);
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int add_opt_table(struct pfctl *, struct pf_opt_tbl **, sa_family_t,
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struct pf_rule_addr *, char *);
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void pfctl_add_rule(struct pfctl *, struct pf_rule *);
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int pfctl_set_timeout(struct pfctl *, const char *, int, int);
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int pfctl_set_reassembly(struct pfctl *, int, int);
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int pfctl_set_syncookies(struct pfctl *, u_int8_t,
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struct pfctl_watermarks *);
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int pfctl_set_optimization(struct pfctl *, const char *);
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int pfctl_set_limit(struct pfctl *, const char *, unsigned int);
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int pfctl_set_logif(struct pfctl *, char *);
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void pfctl_set_hostid(struct pfctl *, u_int32_t);
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int pfctl_set_debug(struct pfctl *, char *);
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int pfctl_set_interface_flags(struct pfctl *, char *, int, int);
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int parse_config(char *, struct pfctl *);
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int parse_flags(char *);
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int pfctl_load_anchors(int, struct pfctl *, struct pfr_buffer *);
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int pfctl_load_queues(struct pfctl *);
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int pfctl_add_queue(struct pfctl *, struct pf_queuespec *);
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struct pfctl_qsitem * pfctl_find_queue(char *, struct pf_qihead *);
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void print_pool(struct pf_pool *, u_int16_t, u_int16_t, sa_family_t, int, int);
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void print_src_node(struct pf_src_node *, int);
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void print_rule(struct pf_rule *, const char *, int);
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void print_tabledef(const char *, int, int, struct node_tinithead *);
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void print_status(struct pf_status *, struct pfctl_watermarks *, int);
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void print_queuespec(struct pf_queuespec *);
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int pfctl_define_table(char *, int, int, const char *, struct pfr_buffer *,
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u_int32_t);
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void pfctl_expand_label_nr(struct pf_rule *, unsigned int);
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void pfctl_clear_fingerprints(int, int);
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int pfctl_file_fingerprints(int, int, const char *);
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pf_osfp_t pfctl_get_fingerprint(const char *);
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int pfctl_load_fingerprints(int, int);
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char *pfctl_lookup_fingerprint(pf_osfp_t, char *, size_t);
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void pfctl_show_fingerprints(int);
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struct icmptypeent {
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const char *name;
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u_int8_t type;
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};
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struct icmpcodeent {
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const char *name;
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u_int8_t type;
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u_int8_t code;
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};
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const struct icmptypeent *geticmptypebynumber(u_int8_t, u_int8_t);
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const struct icmptypeent *geticmptypebyname(char *, u_int8_t);
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const struct icmpcodeent *geticmpcodebynumber(u_int8_t, u_int8_t, u_int8_t);
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const struct icmpcodeent *geticmpcodebyname(u_long, char *, u_int8_t);
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int string_to_loglevel(const char *);
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const char *loglevel_to_string(int);
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struct pf_timeout {
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const char *name;
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int timeout;
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};
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extern const struct pf_timeout pf_timeouts[];
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void set_ipmask(struct node_host *, int);
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int check_netmask(struct node_host *, sa_family_t);
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int unmask(struct pf_addr *);
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struct node_host *gen_dynnode(struct node_host *, sa_family_t);
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void ifa_load(void);
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unsigned int ifa_nametoindex(const char *);
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char *ifa_indextoname(unsigned int, char *);
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struct node_host *ifa_exists(const char *);
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struct node_host *ifa_lookup(const char *, int);
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struct node_host *host(const char *, int);
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int append_addr(struct pfr_buffer *, char *, int, int);
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int append_addr_host(struct pfr_buffer *,
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struct node_host *, int, int);
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#endif /* _PFCTL_PARSER_H_ */
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