/* $OpenBSD: pfctl_parser.h,v 1.117 2020/07/21 14:10:51 henning 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_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_ */