37106b5e69
The kernel will reject very large tables to avoid resource exhaustion
attacks. Some users run into this limit with legitimate table
configurations.
The error message in this case was not very clear:
pf.conf:1: cannot define table nets: Invalid argument
pfctl: Syntax error in config file: pf rules not loaded
If a table definition fails we now check the request_maxcount sysctl,
and if we've tried to create more than that point the user at
net.pf.request_maxcount:
pf.conf:1: cannot define table nets: too many elements.
Consider increasing net.pf.request_maxcount.
pfctl: Syntax error in config file: pf rules not loaded
PR: 235076
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D18909
6378 lines
144 KiB
Plaintext
6378 lines
144 KiB
Plaintext
/* $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2001 Markus Friedl. All rights reserved.
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* Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
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* Copyright (c) 2001 Theo de Raadt. All rights reserved.
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* Copyright (c) 2002,2003 Henning Brauer. 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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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%{
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#define PFIOC_USE_LATEST
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#ifdef __FreeBSD__
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#include <sys/sysctl.h>
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#endif
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/icmp6.h>
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#include <net/pfvar.h>
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#include <arpa/inet.h>
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#include <net/altq/altq.h>
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#include <net/altq/altq_cbq.h>
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#include <net/altq/altq_codel.h>
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#include <net/altq/altq_priq.h>
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#include <net/altq/altq_hfsc.h>
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#include <net/altq/altq_fairq.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <netdb.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <string.h>
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#include <ctype.h>
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#include <math.h>
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#include <err.h>
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#include <limits.h>
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#include <pwd.h>
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#include <grp.h>
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#include <md5.h>
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#include "pfctl_parser.h"
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#include "pfctl.h"
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static struct pfctl *pf = NULL;
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static int debug = 0;
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static int rulestate = 0;
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static u_int16_t returnicmpdefault =
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(ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
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static u_int16_t returnicmp6default =
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(ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
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static int blockpolicy = PFRULE_DROP;
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static int failpolicy = PFRULE_DROP;
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static int require_order = 1;
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static int default_statelock;
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static TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files);
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static struct file {
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TAILQ_ENTRY(file) entry;
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FILE *stream;
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char *name;
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int lineno;
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int errors;
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} *file;
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struct file *pushfile(const char *, int);
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int popfile(void);
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int check_file_secrecy(int, const char *);
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int yyparse(void);
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int yylex(void);
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int yyerror(const char *, ...);
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int kw_cmp(const void *, const void *);
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int lookup(char *);
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int lgetc(int);
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int lungetc(int);
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int findeol(void);
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static TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead);
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struct sym {
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TAILQ_ENTRY(sym) entry;
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int used;
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int persist;
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char *nam;
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char *val;
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};
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int symset(const char *, const char *, int);
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char *symget(const char *);
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int atoul(char *, u_long *);
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enum {
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PFCTL_STATE_NONE,
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PFCTL_STATE_OPTION,
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PFCTL_STATE_SCRUB,
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PFCTL_STATE_QUEUE,
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PFCTL_STATE_NAT,
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PFCTL_STATE_FILTER
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};
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struct node_proto {
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u_int8_t proto;
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struct node_proto *next;
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struct node_proto *tail;
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};
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struct node_port {
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u_int16_t port[2];
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u_int8_t op;
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struct node_port *next;
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struct node_port *tail;
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};
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struct node_uid {
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uid_t uid[2];
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u_int8_t op;
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struct node_uid *next;
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struct node_uid *tail;
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};
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struct node_gid {
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gid_t gid[2];
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u_int8_t op;
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struct node_gid *next;
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struct node_gid *tail;
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};
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struct node_icmp {
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u_int8_t code;
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u_int8_t type;
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u_int8_t proto;
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struct node_icmp *next;
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struct node_icmp *tail;
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};
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enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
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PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
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PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
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PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
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PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
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enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
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struct node_state_opt {
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int type;
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union {
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u_int32_t max_states;
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u_int32_t max_src_states;
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u_int32_t max_src_conn;
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struct {
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u_int32_t limit;
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u_int32_t seconds;
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} max_src_conn_rate;
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struct {
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u_int8_t flush;
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char tblname[PF_TABLE_NAME_SIZE];
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} overload;
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u_int32_t max_src_nodes;
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u_int8_t src_track;
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u_int32_t statelock;
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struct {
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int number;
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u_int32_t seconds;
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} timeout;
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} data;
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struct node_state_opt *next;
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struct node_state_opt *tail;
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};
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struct peer {
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struct node_host *host;
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struct node_port *port;
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};
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static struct node_queue {
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char queue[PF_QNAME_SIZE];
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char parent[PF_QNAME_SIZE];
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char ifname[IFNAMSIZ];
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int scheduler;
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struct node_queue *next;
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struct node_queue *tail;
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} *queues = NULL;
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struct node_qassign {
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char *qname;
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char *pqname;
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};
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static struct filter_opts {
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int marker;
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#define FOM_FLAGS 0x01
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#define FOM_ICMP 0x02
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#define FOM_TOS 0x04
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#define FOM_KEEP 0x08
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#define FOM_SRCTRACK 0x10
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#define FOM_SETPRIO 0x0400
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#define FOM_PRIO 0x2000
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struct node_uid *uid;
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struct node_gid *gid;
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struct {
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u_int8_t b1;
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u_int8_t b2;
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u_int16_t w;
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u_int16_t w2;
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} flags;
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struct node_icmp *icmpspec;
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u_int32_t tos;
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u_int32_t prob;
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struct {
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int action;
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struct node_state_opt *options;
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} keep;
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int fragment;
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int allowopts;
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char *label;
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struct node_qassign queues;
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char *tag;
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char *match_tag;
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u_int8_t match_tag_not;
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u_int rtableid;
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u_int8_t prio;
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u_int8_t set_prio[2];
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struct {
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struct node_host *addr;
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u_int16_t port;
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} divert;
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} filter_opts;
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static struct antispoof_opts {
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char *label;
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u_int rtableid;
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} antispoof_opts;
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static struct scrub_opts {
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int marker;
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#define SOM_MINTTL 0x01
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#define SOM_MAXMSS 0x02
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#define SOM_FRAGCACHE 0x04
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#define SOM_SETTOS 0x08
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int nodf;
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int minttl;
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int maxmss;
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int settos;
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int fragcache;
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int randomid;
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int reassemble_tcp;
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char *match_tag;
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u_int8_t match_tag_not;
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u_int rtableid;
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} scrub_opts;
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static struct queue_opts {
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int marker;
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#define QOM_BWSPEC 0x01
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#define QOM_SCHEDULER 0x02
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#define QOM_PRIORITY 0x04
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#define QOM_TBRSIZE 0x08
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#define QOM_QLIMIT 0x10
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struct node_queue_bw queue_bwspec;
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struct node_queue_opt scheduler;
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int priority;
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unsigned int tbrsize;
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int qlimit;
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} queue_opts;
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static struct table_opts {
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int flags;
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int init_addr;
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struct node_tinithead init_nodes;
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} table_opts;
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static struct pool_opts {
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int marker;
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#define POM_TYPE 0x01
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#define POM_STICKYADDRESS 0x02
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u_int8_t opts;
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int type;
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int staticport;
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struct pf_poolhashkey *key;
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} pool_opts;
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static struct codel_opts codel_opts;
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static struct node_hfsc_opts hfsc_opts;
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static struct node_fairq_opts fairq_opts;
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static struct node_state_opt *keep_state_defaults = NULL;
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int disallow_table(struct node_host *, const char *);
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int disallow_urpf_failed(struct node_host *, const char *);
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int disallow_alias(struct node_host *, const char *);
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int rule_consistent(struct pf_rule *, int);
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int filter_consistent(struct pf_rule *, int);
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int nat_consistent(struct pf_rule *);
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int rdr_consistent(struct pf_rule *);
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int process_tabledef(char *, struct table_opts *);
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void expand_label_str(char *, size_t, const char *, const char *);
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void expand_label_if(const char *, char *, size_t, const char *);
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void expand_label_addr(const char *, char *, size_t, u_int8_t,
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struct node_host *);
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void expand_label_port(const char *, char *, size_t,
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struct node_port *);
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void expand_label_proto(const char *, char *, size_t, u_int8_t);
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void expand_label_nr(const char *, char *, size_t);
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void expand_label(char *, size_t, const char *, u_int8_t,
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struct node_host *, struct node_port *, struct node_host *,
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struct node_port *, u_int8_t);
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void expand_rule(struct pf_rule *, struct node_if *,
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struct node_host *, struct node_proto *, struct node_os *,
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struct node_host *, struct node_port *, struct node_host *,
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struct node_port *, struct node_uid *, struct node_gid *,
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struct node_icmp *, const char *);
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int expand_altq(struct pf_altq *, struct node_if *,
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struct node_queue *, struct node_queue_bw bwspec,
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struct node_queue_opt *);
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int expand_queue(struct pf_altq *, struct node_if *,
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struct node_queue *, struct node_queue_bw,
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struct node_queue_opt *);
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int expand_skip_interface(struct node_if *);
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int check_rulestate(int);
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int getservice(char *);
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int rule_label(struct pf_rule *, char *);
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int rt_tableid_max(void);
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void mv_rules(struct pf_ruleset *, struct pf_ruleset *);
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void decide_address_family(struct node_host *, sa_family_t *);
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void remove_invalid_hosts(struct node_host **, sa_family_t *);
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int invalid_redirect(struct node_host *, sa_family_t);
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u_int16_t parseicmpspec(char *, sa_family_t);
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int kw_casecmp(const void *, const void *);
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int map_tos(char *string, int *);
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static TAILQ_HEAD(loadanchorshead, loadanchors)
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loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
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struct loadanchors {
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TAILQ_ENTRY(loadanchors) entries;
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char *anchorname;
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char *filename;
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};
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typedef struct {
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union {
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int64_t number;
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double probability;
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int i;
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char *string;
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u_int rtableid;
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struct {
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u_int8_t b1;
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u_int8_t b2;
|
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u_int16_t w;
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u_int16_t w2;
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} b;
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struct range {
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int a;
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int b;
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int t;
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} range;
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struct node_if *interface;
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struct node_proto *proto;
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struct node_icmp *icmp;
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struct node_host *host;
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struct node_os *os;
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struct node_port *port;
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struct node_uid *uid;
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struct node_gid *gid;
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struct node_state_opt *state_opt;
|
|
struct peer peer;
|
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struct {
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struct peer src, dst;
|
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struct node_os *src_os;
|
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} fromto;
|
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struct {
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|
struct node_host *host;
|
|
u_int8_t rt;
|
|
u_int8_t pool_opts;
|
|
sa_family_t af;
|
|
struct pf_poolhashkey *key;
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} route;
|
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struct redirection {
|
|
struct node_host *host;
|
|
struct range rport;
|
|
} *redirection;
|
|
struct {
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|
int action;
|
|
struct node_state_opt *options;
|
|
} keep_state;
|
|
struct {
|
|
u_int8_t log;
|
|
u_int8_t logif;
|
|
u_int8_t quick;
|
|
} logquick;
|
|
struct {
|
|
int neg;
|
|
char *name;
|
|
} tagged;
|
|
struct pf_poolhashkey *hashkey;
|
|
struct node_queue *queue;
|
|
struct node_queue_opt queue_options;
|
|
struct node_queue_bw queue_bwspec;
|
|
struct node_qassign qassign;
|
|
struct filter_opts filter_opts;
|
|
struct antispoof_opts antispoof_opts;
|
|
struct queue_opts queue_opts;
|
|
struct scrub_opts scrub_opts;
|
|
struct table_opts table_opts;
|
|
struct pool_opts pool_opts;
|
|
struct node_hfsc_opts hfsc_opts;
|
|
struct node_fairq_opts fairq_opts;
|
|
struct codel_opts codel_opts;
|
|
} v;
|
|
int lineno;
|
|
} YYSTYPE;
|
|
|
|
#define PPORT_RANGE 1
|
|
#define PPORT_STAR 2
|
|
int parseport(char *, struct range *r, int);
|
|
|
|
#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
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|
(!((addr).iflags & PFI_AFLAG_NOALIAS) || \
|
|
!isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
|
|
|
|
%}
|
|
|
|
%token PASS BLOCK SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
|
|
%token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
|
|
%token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
|
|
%token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
|
|
%token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
|
|
%token REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
|
|
%token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY
|
|
%token RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
|
|
%token ANTISPOOF FOR INCLUDE
|
|
%token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
|
|
%token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
|
|
%token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
|
|
%token LOAD RULESET_OPTIMIZATION PRIO
|
|
%token STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
|
|
%token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
|
|
%token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
|
|
%token DIVERTTO DIVERTREPLY
|
|
%token <v.string> STRING
|
|
%token <v.number> NUMBER
|
|
%token <v.i> PORTBINARY
|
|
%type <v.interface> interface if_list if_item_not if_item
|
|
%type <v.number> number icmptype icmp6type uid gid
|
|
%type <v.number> tos not yesno
|
|
%type <v.probability> probability
|
|
%type <v.i> no dir af fragcache optimizer
|
|
%type <v.i> sourcetrack flush unaryop statelock
|
|
%type <v.b> action nataction natpasslog scrubaction
|
|
%type <v.b> flags flag blockspec prio
|
|
%type <v.range> portplain portstar portrange
|
|
%type <v.hashkey> hashkey
|
|
%type <v.proto> proto proto_list proto_item
|
|
%type <v.number> protoval
|
|
%type <v.icmp> icmpspec
|
|
%type <v.icmp> icmp_list icmp_item
|
|
%type <v.icmp> icmp6_list icmp6_item
|
|
%type <v.number> reticmpspec reticmp6spec
|
|
%type <v.fromto> fromto
|
|
%type <v.peer> ipportspec from to
|
|
%type <v.host> ipspec toipspec xhost host dynaddr host_list
|
|
%type <v.host> redir_host_list redirspec
|
|
%type <v.host> route_host route_host_list routespec
|
|
%type <v.os> os xos os_list
|
|
%type <v.port> portspec port_list port_item
|
|
%type <v.uid> uids uid_list uid_item
|
|
%type <v.gid> gids gid_list gid_item
|
|
%type <v.route> route
|
|
%type <v.redirection> redirection redirpool
|
|
%type <v.string> label stringall tag anchorname
|
|
%type <v.string> string varstring numberstring
|
|
%type <v.keep_state> keep
|
|
%type <v.state_opt> state_opt_spec state_opt_list state_opt_item
|
|
%type <v.logquick> logquick quick log logopts logopt
|
|
%type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if
|
|
%type <v.qassign> qname
|
|
%type <v.queue> qassign qassign_list qassign_item
|
|
%type <v.queue_options> scheduler
|
|
%type <v.number> cbqflags_list cbqflags_item
|
|
%type <v.number> priqflags_list priqflags_item
|
|
%type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts
|
|
%type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts
|
|
%type <v.codel_opts> codelopts_list codelopts_item codel_opts
|
|
%type <v.queue_bwspec> bandwidth
|
|
%type <v.filter_opts> filter_opts filter_opt filter_opts_l
|
|
%type <v.filter_opts> filter_sets filter_set filter_sets_l
|
|
%type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l
|
|
%type <v.queue_opts> queue_opts queue_opt queue_opts_l
|
|
%type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l
|
|
%type <v.table_opts> table_opts table_opt table_opts_l
|
|
%type <v.pool_opts> pool_opts pool_opt pool_opts_l
|
|
%type <v.tagged> tagged
|
|
%type <v.rtableid> rtable
|
|
%%
|
|
|
|
ruleset : /* empty */
|
|
| ruleset include '\n'
|
|
| ruleset '\n'
|
|
| ruleset option '\n'
|
|
| ruleset scrubrule '\n'
|
|
| ruleset natrule '\n'
|
|
| ruleset binatrule '\n'
|
|
| ruleset pfrule '\n'
|
|
| ruleset anchorrule '\n'
|
|
| ruleset loadrule '\n'
|
|
| ruleset altqif '\n'
|
|
| ruleset queuespec '\n'
|
|
| ruleset varset '\n'
|
|
| ruleset antispoof '\n'
|
|
| ruleset tabledef '\n'
|
|
| '{' fakeanchor '}' '\n';
|
|
| ruleset error '\n' { file->errors++; }
|
|
;
|
|
|
|
include : INCLUDE STRING {
|
|
struct file *nfile;
|
|
|
|
if ((nfile = pushfile($2, 0)) == NULL) {
|
|
yyerror("failed to include file %s", $2);
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
free($2);
|
|
|
|
file = nfile;
|
|
lungetc('\n');
|
|
}
|
|
;
|
|
|
|
/*
|
|
* apply to previouslys specified rule: must be careful to note
|
|
* what that is: pf or nat or binat or rdr
|
|
*/
|
|
fakeanchor : fakeanchor '\n'
|
|
| fakeanchor anchorrule '\n'
|
|
| fakeanchor binatrule '\n'
|
|
| fakeanchor natrule '\n'
|
|
| fakeanchor pfrule '\n'
|
|
| fakeanchor error '\n'
|
|
;
|
|
|
|
optimizer : string {
|
|
if (!strcmp($1, "none"))
|
|
$$ = 0;
|
|
else if (!strcmp($1, "basic"))
|
|
$$ = PF_OPTIMIZE_BASIC;
|
|
else if (!strcmp($1, "profile"))
|
|
$$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
|
|
else {
|
|
yyerror("unknown ruleset-optimization %s", $1);
|
|
YYERROR;
|
|
}
|
|
}
|
|
;
|
|
|
|
option : SET OPTIMIZATION STRING {
|
|
if (check_rulestate(PFCTL_STATE_OPTION)) {
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
if (pfctl_set_optimization(pf, $3) != 0) {
|
|
yyerror("unknown optimization %s", $3);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
free($3);
|
|
}
|
|
| SET RULESET_OPTIMIZATION optimizer {
|
|
if (!(pf->opts & PF_OPT_OPTIMIZE)) {
|
|
pf->opts |= PF_OPT_OPTIMIZE;
|
|
pf->optimize = $3;
|
|
}
|
|
}
|
|
| SET TIMEOUT timeout_spec
|
|
| SET TIMEOUT '{' optnl timeout_list '}'
|
|
| SET LIMIT limit_spec
|
|
| SET LIMIT '{' optnl limit_list '}'
|
|
| SET LOGINTERFACE stringall {
|
|
if (check_rulestate(PFCTL_STATE_OPTION)) {
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
if (pfctl_set_logif(pf, $3) != 0) {
|
|
yyerror("error setting loginterface %s", $3);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
free($3);
|
|
}
|
|
| SET HOSTID number {
|
|
if ($3 == 0 || $3 > UINT_MAX) {
|
|
yyerror("hostid must be non-zero");
|
|
YYERROR;
|
|
}
|
|
if (pfctl_set_hostid(pf, $3) != 0) {
|
|
yyerror("error setting hostid %08x", $3);
|
|
YYERROR;
|
|
}
|
|
}
|
|
| SET BLOCKPOLICY DROP {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("set block-policy drop\n");
|
|
if (check_rulestate(PFCTL_STATE_OPTION))
|
|
YYERROR;
|
|
blockpolicy = PFRULE_DROP;
|
|
}
|
|
| SET BLOCKPOLICY RETURN {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("set block-policy return\n");
|
|
if (check_rulestate(PFCTL_STATE_OPTION))
|
|
YYERROR;
|
|
blockpolicy = PFRULE_RETURN;
|
|
}
|
|
| SET FAILPOLICY DROP {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("set fail-policy drop\n");
|
|
if (check_rulestate(PFCTL_STATE_OPTION))
|
|
YYERROR;
|
|
failpolicy = PFRULE_DROP;
|
|
}
|
|
| SET FAILPOLICY RETURN {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("set fail-policy return\n");
|
|
if (check_rulestate(PFCTL_STATE_OPTION))
|
|
YYERROR;
|
|
failpolicy = PFRULE_RETURN;
|
|
}
|
|
| SET REQUIREORDER yesno {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("set require-order %s\n",
|
|
$3 == 1 ? "yes" : "no");
|
|
require_order = $3;
|
|
}
|
|
| SET FINGERPRINTS STRING {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("set fingerprints \"%s\"\n", $3);
|
|
if (check_rulestate(PFCTL_STATE_OPTION)) {
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
if (!pf->anchor->name[0]) {
|
|
if (pfctl_file_fingerprints(pf->dev,
|
|
pf->opts, $3)) {
|
|
yyerror("error loading "
|
|
"fingerprints %s", $3);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
}
|
|
free($3);
|
|
}
|
|
| SET STATEPOLICY statelock {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
switch ($3) {
|
|
case 0:
|
|
printf("set state-policy floating\n");
|
|
break;
|
|
case PFRULE_IFBOUND:
|
|
printf("set state-policy if-bound\n");
|
|
break;
|
|
}
|
|
default_statelock = $3;
|
|
}
|
|
| SET DEBUG STRING {
|
|
if (check_rulestate(PFCTL_STATE_OPTION)) {
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
if (pfctl_set_debug(pf, $3) != 0) {
|
|
yyerror("error setting debuglevel %s", $3);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
free($3);
|
|
}
|
|
| SET SKIP interface {
|
|
if (expand_skip_interface($3) != 0) {
|
|
yyerror("error setting skip interface(s)");
|
|
YYERROR;
|
|
}
|
|
}
|
|
| SET STATEDEFAULTS state_opt_list {
|
|
if (keep_state_defaults != NULL) {
|
|
yyerror("cannot redefine state-defaults");
|
|
YYERROR;
|
|
}
|
|
keep_state_defaults = $3;
|
|
}
|
|
;
|
|
|
|
stringall : STRING { $$ = $1; }
|
|
| ALL {
|
|
if (($$ = strdup("all")) == NULL) {
|
|
err(1, "stringall: strdup");
|
|
}
|
|
}
|
|
;
|
|
|
|
string : STRING string {
|
|
if (asprintf(&$$, "%s %s", $1, $2) == -1)
|
|
err(1, "string: asprintf");
|
|
free($1);
|
|
free($2);
|
|
}
|
|
| STRING
|
|
;
|
|
|
|
varstring : numberstring varstring {
|
|
if (asprintf(&$$, "%s %s", $1, $2) == -1)
|
|
err(1, "string: asprintf");
|
|
free($1);
|
|
free($2);
|
|
}
|
|
| numberstring
|
|
;
|
|
|
|
numberstring : NUMBER {
|
|
char *s;
|
|
if (asprintf(&s, "%lld", (long long)$1) == -1) {
|
|
yyerror("string: asprintf");
|
|
YYERROR;
|
|
}
|
|
$$ = s;
|
|
}
|
|
| STRING
|
|
;
|
|
|
|
varset : STRING '=' varstring {
|
|
char *s = $1;
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("%s = \"%s\"\n", $1, $3);
|
|
while (*s++) {
|
|
if (isspace((unsigned char)*s)) {
|
|
yyerror("macro name cannot contain "
|
|
"whitespace");
|
|
YYERROR;
|
|
}
|
|
}
|
|
if (symset($1, $3, 0) == -1)
|
|
err(1, "cannot store variable %s", $1);
|
|
free($1);
|
|
free($3);
|
|
}
|
|
;
|
|
|
|
anchorname : STRING { $$ = $1; }
|
|
| /* empty */ { $$ = NULL; }
|
|
;
|
|
|
|
pfa_anchorlist : /* empty */
|
|
| pfa_anchorlist '\n'
|
|
| pfa_anchorlist pfrule '\n'
|
|
| pfa_anchorlist anchorrule '\n'
|
|
;
|
|
|
|
pfa_anchor : '{'
|
|
{
|
|
char ta[PF_ANCHOR_NAME_SIZE];
|
|
struct pf_ruleset *rs;
|
|
|
|
/* steping into a brace anchor */
|
|
pf->asd++;
|
|
pf->bn++;
|
|
pf->brace = 1;
|
|
|
|
/* create a holding ruleset in the root */
|
|
snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
|
|
rs = pf_find_or_create_ruleset(ta);
|
|
if (rs == NULL)
|
|
err(1, "pfa_anchor: pf_find_or_create_ruleset");
|
|
pf->astack[pf->asd] = rs->anchor;
|
|
pf->anchor = rs->anchor;
|
|
} '\n' pfa_anchorlist '}'
|
|
{
|
|
pf->alast = pf->anchor;
|
|
pf->asd--;
|
|
pf->anchor = pf->astack[pf->asd];
|
|
}
|
|
| /* empty */
|
|
;
|
|
|
|
anchorrule : ANCHOR anchorname dir quick interface af proto fromto
|
|
filter_opts pfa_anchor
|
|
{
|
|
struct pf_rule r;
|
|
struct node_proto *proto;
|
|
|
|
if (check_rulestate(PFCTL_STATE_FILTER)) {
|
|
if ($2)
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
|
|
if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
|
|
free($2);
|
|
yyerror("anchor names beginning with '_' "
|
|
"are reserved for internal use");
|
|
YYERROR;
|
|
}
|
|
|
|
memset(&r, 0, sizeof(r));
|
|
if (pf->astack[pf->asd + 1]) {
|
|
/* move inline rules into relative location */
|
|
pf_anchor_setup(&r,
|
|
&pf->astack[pf->asd]->ruleset,
|
|
$2 ? $2 : pf->alast->name);
|
|
|
|
if (r.anchor == NULL)
|
|
err(1, "anchorrule: unable to "
|
|
"create ruleset");
|
|
|
|
if (pf->alast != r.anchor) {
|
|
if (r.anchor->match) {
|
|
yyerror("inline anchor '%s' "
|
|
"already exists",
|
|
r.anchor->name);
|
|
YYERROR;
|
|
}
|
|
mv_rules(&pf->alast->ruleset,
|
|
&r.anchor->ruleset);
|
|
}
|
|
pf_remove_if_empty_ruleset(&pf->alast->ruleset);
|
|
pf->alast = r.anchor;
|
|
} else {
|
|
if (!$2) {
|
|
yyerror("anchors without explicit "
|
|
"rules must specify a name");
|
|
YYERROR;
|
|
}
|
|
}
|
|
r.direction = $3;
|
|
r.quick = $4.quick;
|
|
r.af = $6;
|
|
r.prob = $9.prob;
|
|
r.rtableid = $9.rtableid;
|
|
|
|
if ($9.tag)
|
|
if (strlcpy(r.tagname, $9.tag,
|
|
PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
if ($9.match_tag)
|
|
if (strlcpy(r.match_tagname, $9.match_tag,
|
|
PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
r.match_tag_not = $9.match_tag_not;
|
|
if (rule_label(&r, $9.label))
|
|
YYERROR;
|
|
free($9.label);
|
|
r.flags = $9.flags.b1;
|
|
r.flagset = $9.flags.b2;
|
|
if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
|
|
yyerror("flags always false");
|
|
YYERROR;
|
|
}
|
|
if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
|
|
for (proto = $7; proto != NULL &&
|
|
proto->proto != IPPROTO_TCP;
|
|
proto = proto->next)
|
|
; /* nothing */
|
|
if (proto == NULL && $7 != NULL) {
|
|
if ($9.flags.b1 || $9.flags.b2)
|
|
yyerror(
|
|
"flags only apply to tcp");
|
|
if ($8.src_os)
|
|
yyerror(
|
|
"OS fingerprinting only "
|
|
"applies to tcp");
|
|
YYERROR;
|
|
}
|
|
}
|
|
|
|
r.tos = $9.tos;
|
|
|
|
if ($9.keep.action) {
|
|
yyerror("cannot specify state handling "
|
|
"on anchors");
|
|
YYERROR;
|
|
}
|
|
|
|
if ($9.match_tag)
|
|
if (strlcpy(r.match_tagname, $9.match_tag,
|
|
PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
r.match_tag_not = $9.match_tag_not;
|
|
if ($9.marker & FOM_PRIO) {
|
|
if ($9.prio == 0)
|
|
r.prio = PF_PRIO_ZERO;
|
|
else
|
|
r.prio = $9.prio;
|
|
}
|
|
if ($9.marker & FOM_SETPRIO) {
|
|
r.set_prio[0] = $9.set_prio[0];
|
|
r.set_prio[1] = $9.set_prio[1];
|
|
r.scrub_flags |= PFSTATE_SETPRIO;
|
|
}
|
|
|
|
decide_address_family($8.src.host, &r.af);
|
|
decide_address_family($8.dst.host, &r.af);
|
|
|
|
expand_rule(&r, $5, NULL, $7, $8.src_os,
|
|
$8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
|
|
$9.uid, $9.gid, $9.icmpspec,
|
|
pf->astack[pf->asd + 1] ? pf->alast->name : $2);
|
|
free($2);
|
|
pf->astack[pf->asd + 1] = NULL;
|
|
}
|
|
| NATANCHOR string interface af proto fromto rtable {
|
|
struct pf_rule r;
|
|
|
|
if (check_rulestate(PFCTL_STATE_NAT)) {
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
|
|
memset(&r, 0, sizeof(r));
|
|
r.action = PF_NAT;
|
|
r.af = $4;
|
|
r.rtableid = $7;
|
|
|
|
decide_address_family($6.src.host, &r.af);
|
|
decide_address_family($6.dst.host, &r.af);
|
|
|
|
expand_rule(&r, $3, NULL, $5, $6.src_os,
|
|
$6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
|
|
0, 0, 0, $2);
|
|
free($2);
|
|
}
|
|
| RDRANCHOR string interface af proto fromto rtable {
|
|
struct pf_rule r;
|
|
|
|
if (check_rulestate(PFCTL_STATE_NAT)) {
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
|
|
memset(&r, 0, sizeof(r));
|
|
r.action = PF_RDR;
|
|
r.af = $4;
|
|
r.rtableid = $7;
|
|
|
|
decide_address_family($6.src.host, &r.af);
|
|
decide_address_family($6.dst.host, &r.af);
|
|
|
|
if ($6.src.port != NULL) {
|
|
yyerror("source port parameter not supported"
|
|
" in rdr-anchor");
|
|
YYERROR;
|
|
}
|
|
if ($6.dst.port != NULL) {
|
|
if ($6.dst.port->next != NULL) {
|
|
yyerror("destination port list "
|
|
"expansion not supported in "
|
|
"rdr-anchor");
|
|
YYERROR;
|
|
} else if ($6.dst.port->op != PF_OP_EQ) {
|
|
yyerror("destination port operators"
|
|
" not supported in rdr-anchor");
|
|
YYERROR;
|
|
}
|
|
r.dst.port[0] = $6.dst.port->port[0];
|
|
r.dst.port[1] = $6.dst.port->port[1];
|
|
r.dst.port_op = $6.dst.port->op;
|
|
}
|
|
|
|
expand_rule(&r, $3, NULL, $5, $6.src_os,
|
|
$6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
|
|
0, 0, 0, $2);
|
|
free($2);
|
|
}
|
|
| BINATANCHOR string interface af proto fromto rtable {
|
|
struct pf_rule r;
|
|
|
|
if (check_rulestate(PFCTL_STATE_NAT)) {
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
|
|
memset(&r, 0, sizeof(r));
|
|
r.action = PF_BINAT;
|
|
r.af = $4;
|
|
r.rtableid = $7;
|
|
if ($5 != NULL) {
|
|
if ($5->next != NULL) {
|
|
yyerror("proto list expansion"
|
|
" not supported in binat-anchor");
|
|
YYERROR;
|
|
}
|
|
r.proto = $5->proto;
|
|
free($5);
|
|
}
|
|
|
|
if ($6.src.host != NULL || $6.src.port != NULL ||
|
|
$6.dst.host != NULL || $6.dst.port != NULL) {
|
|
yyerror("fromto parameter not supported"
|
|
" in binat-anchor");
|
|
YYERROR;
|
|
}
|
|
|
|
decide_address_family($6.src.host, &r.af);
|
|
decide_address_family($6.dst.host, &r.af);
|
|
|
|
pfctl_add_rule(pf, &r, $2);
|
|
free($2);
|
|
}
|
|
;
|
|
|
|
loadrule : LOAD ANCHOR string FROM string {
|
|
struct loadanchors *loadanchor;
|
|
|
|
if (strlen(pf->anchor->name) + 1 +
|
|
strlen($3) >= MAXPATHLEN) {
|
|
yyerror("anchorname %s too long, max %u\n",
|
|
$3, MAXPATHLEN - 1);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
loadanchor = calloc(1, sizeof(struct loadanchors));
|
|
if (loadanchor == NULL)
|
|
err(1, "loadrule: calloc");
|
|
if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
|
|
NULL)
|
|
err(1, "loadrule: malloc");
|
|
if (pf->anchor->name[0])
|
|
snprintf(loadanchor->anchorname, MAXPATHLEN,
|
|
"%s/%s", pf->anchor->name, $3);
|
|
else
|
|
strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
|
|
if ((loadanchor->filename = strdup($5)) == NULL)
|
|
err(1, "loadrule: strdup");
|
|
|
|
TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
|
|
entries);
|
|
|
|
free($3);
|
|
free($5);
|
|
};
|
|
|
|
scrubaction : no SCRUB {
|
|
$$.b2 = $$.w = 0;
|
|
if ($1)
|
|
$$.b1 = PF_NOSCRUB;
|
|
else
|
|
$$.b1 = PF_SCRUB;
|
|
}
|
|
;
|
|
|
|
scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts
|
|
{
|
|
struct pf_rule r;
|
|
|
|
if (check_rulestate(PFCTL_STATE_SCRUB))
|
|
YYERROR;
|
|
|
|
memset(&r, 0, sizeof(r));
|
|
|
|
r.action = $1.b1;
|
|
r.direction = $2;
|
|
|
|
r.log = $3.log;
|
|
r.logif = $3.logif;
|
|
if ($3.quick) {
|
|
yyerror("scrub rules do not support 'quick'");
|
|
YYERROR;
|
|
}
|
|
|
|
r.af = $5;
|
|
if ($8.nodf)
|
|
r.rule_flag |= PFRULE_NODF;
|
|
if ($8.randomid)
|
|
r.rule_flag |= PFRULE_RANDOMID;
|
|
if ($8.reassemble_tcp) {
|
|
if (r.direction != PF_INOUT) {
|
|
yyerror("reassemble tcp rules can not "
|
|
"specify direction");
|
|
YYERROR;
|
|
}
|
|
r.rule_flag |= PFRULE_REASSEMBLE_TCP;
|
|
}
|
|
if ($8.minttl)
|
|
r.min_ttl = $8.minttl;
|
|
if ($8.maxmss)
|
|
r.max_mss = $8.maxmss;
|
|
if ($8.marker & SOM_SETTOS) {
|
|
r.rule_flag |= PFRULE_SET_TOS;
|
|
r.set_tos = $8.settos;
|
|
}
|
|
if ($8.fragcache)
|
|
r.rule_flag |= $8.fragcache;
|
|
if ($8.match_tag)
|
|
if (strlcpy(r.match_tagname, $8.match_tag,
|
|
PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
r.match_tag_not = $8.match_tag_not;
|
|
r.rtableid = $8.rtableid;
|
|
|
|
expand_rule(&r, $4, NULL, $6, $7.src_os,
|
|
$7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
|
|
NULL, NULL, NULL, "");
|
|
}
|
|
;
|
|
|
|
scrub_opts : {
|
|
bzero(&scrub_opts, sizeof scrub_opts);
|
|
scrub_opts.rtableid = -1;
|
|
}
|
|
scrub_opts_l
|
|
{ $$ = scrub_opts; }
|
|
| /* empty */ {
|
|
bzero(&scrub_opts, sizeof scrub_opts);
|
|
scrub_opts.rtableid = -1;
|
|
$$ = scrub_opts;
|
|
}
|
|
;
|
|
|
|
scrub_opts_l : scrub_opts_l scrub_opt
|
|
| scrub_opt
|
|
;
|
|
|
|
scrub_opt : NODF {
|
|
if (scrub_opts.nodf) {
|
|
yyerror("no-df cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
scrub_opts.nodf = 1;
|
|
}
|
|
| MINTTL NUMBER {
|
|
if (scrub_opts.marker & SOM_MINTTL) {
|
|
yyerror("min-ttl cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > 255) {
|
|
yyerror("illegal min-ttl value %d", $2);
|
|
YYERROR;
|
|
}
|
|
scrub_opts.marker |= SOM_MINTTL;
|
|
scrub_opts.minttl = $2;
|
|
}
|
|
| MAXMSS NUMBER {
|
|
if (scrub_opts.marker & SOM_MAXMSS) {
|
|
yyerror("max-mss cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > 65535) {
|
|
yyerror("illegal max-mss value %d", $2);
|
|
YYERROR;
|
|
}
|
|
scrub_opts.marker |= SOM_MAXMSS;
|
|
scrub_opts.maxmss = $2;
|
|
}
|
|
| SETTOS tos {
|
|
if (scrub_opts.marker & SOM_SETTOS) {
|
|
yyerror("set-tos cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
scrub_opts.marker |= SOM_SETTOS;
|
|
scrub_opts.settos = $2;
|
|
}
|
|
| fragcache {
|
|
if (scrub_opts.marker & SOM_FRAGCACHE) {
|
|
yyerror("fragcache cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
scrub_opts.marker |= SOM_FRAGCACHE;
|
|
scrub_opts.fragcache = $1;
|
|
}
|
|
| REASSEMBLE STRING {
|
|
if (strcasecmp($2, "tcp") != 0) {
|
|
yyerror("scrub reassemble supports only tcp, "
|
|
"not '%s'", $2);
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
free($2);
|
|
if (scrub_opts.reassemble_tcp) {
|
|
yyerror("reassemble tcp cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
scrub_opts.reassemble_tcp = 1;
|
|
}
|
|
| RANDOMID {
|
|
if (scrub_opts.randomid) {
|
|
yyerror("random-id cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
scrub_opts.randomid = 1;
|
|
}
|
|
| RTABLE NUMBER {
|
|
if ($2 < 0 || $2 > rt_tableid_max()) {
|
|
yyerror("invalid rtable id");
|
|
YYERROR;
|
|
}
|
|
scrub_opts.rtableid = $2;
|
|
}
|
|
| not TAGGED string {
|
|
scrub_opts.match_tag = $3;
|
|
scrub_opts.match_tag_not = $1;
|
|
}
|
|
;
|
|
|
|
fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ }
|
|
| FRAGMENT FRAGCROP { $$ = 0; }
|
|
| FRAGMENT FRAGDROP { $$ = 0; }
|
|
;
|
|
|
|
antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
|
|
struct pf_rule r;
|
|
struct node_host *h = NULL, *hh;
|
|
struct node_if *i, *j;
|
|
|
|
if (check_rulestate(PFCTL_STATE_FILTER))
|
|
YYERROR;
|
|
|
|
for (i = $3; i; i = i->next) {
|
|
bzero(&r, sizeof(r));
|
|
|
|
r.action = PF_DROP;
|
|
r.direction = PF_IN;
|
|
r.log = $2.log;
|
|
r.logif = $2.logif;
|
|
r.quick = $2.quick;
|
|
r.af = $4;
|
|
if (rule_label(&r, $5.label))
|
|
YYERROR;
|
|
r.rtableid = $5.rtableid;
|
|
j = calloc(1, sizeof(struct node_if));
|
|
if (j == NULL)
|
|
err(1, "antispoof: calloc");
|
|
if (strlcpy(j->ifname, i->ifname,
|
|
sizeof(j->ifname)) >= sizeof(j->ifname)) {
|
|
free(j);
|
|
yyerror("interface name too long");
|
|
YYERROR;
|
|
}
|
|
j->not = 1;
|
|
if (i->dynamic) {
|
|
h = calloc(1, sizeof(*h));
|
|
if (h == NULL)
|
|
err(1, "address: calloc");
|
|
h->addr.type = PF_ADDR_DYNIFTL;
|
|
set_ipmask(h, 128);
|
|
if (strlcpy(h->addr.v.ifname, i->ifname,
|
|
sizeof(h->addr.v.ifname)) >=
|
|
sizeof(h->addr.v.ifname)) {
|
|
free(h);
|
|
yyerror(
|
|
"interface name too long");
|
|
YYERROR;
|
|
}
|
|
hh = malloc(sizeof(*hh));
|
|
if (hh == NULL)
|
|
err(1, "address: malloc");
|
|
bcopy(h, hh, sizeof(*hh));
|
|
h->addr.iflags = PFI_AFLAG_NETWORK;
|
|
} else {
|
|
h = ifa_lookup(j->ifname,
|
|
PFI_AFLAG_NETWORK);
|
|
hh = NULL;
|
|
}
|
|
|
|
if (h != NULL)
|
|
expand_rule(&r, j, NULL, NULL, NULL, h,
|
|
NULL, NULL, NULL, NULL, NULL,
|
|
NULL, "");
|
|
|
|
if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
|
|
bzero(&r, sizeof(r));
|
|
|
|
r.action = PF_DROP;
|
|
r.direction = PF_IN;
|
|
r.log = $2.log;
|
|
r.logif = $2.logif;
|
|
r.quick = $2.quick;
|
|
r.af = $4;
|
|
if (rule_label(&r, $5.label))
|
|
YYERROR;
|
|
r.rtableid = $5.rtableid;
|
|
if (hh != NULL)
|
|
h = hh;
|
|
else
|
|
h = ifa_lookup(i->ifname, 0);
|
|
if (h != NULL)
|
|
expand_rule(&r, NULL, NULL,
|
|
NULL, NULL, h, NULL, NULL,
|
|
NULL, NULL, NULL, NULL, "");
|
|
} else
|
|
free(hh);
|
|
}
|
|
free($5.label);
|
|
}
|
|
;
|
|
|
|
antispoof_ifspc : FOR antispoof_if { $$ = $2; }
|
|
| FOR '{' optnl antispoof_iflst '}' { $$ = $4; }
|
|
;
|
|
|
|
antispoof_iflst : antispoof_if optnl { $$ = $1; }
|
|
| antispoof_iflst comma antispoof_if optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
antispoof_if : if_item { $$ = $1; }
|
|
| '(' if_item ')' {
|
|
$2->dynamic = 1;
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
antispoof_opts : {
|
|
bzero(&antispoof_opts, sizeof antispoof_opts);
|
|
antispoof_opts.rtableid = -1;
|
|
}
|
|
antispoof_opts_l
|
|
{ $$ = antispoof_opts; }
|
|
| /* empty */ {
|
|
bzero(&antispoof_opts, sizeof antispoof_opts);
|
|
antispoof_opts.rtableid = -1;
|
|
$$ = antispoof_opts;
|
|
}
|
|
;
|
|
|
|
antispoof_opts_l : antispoof_opts_l antispoof_opt
|
|
| antispoof_opt
|
|
;
|
|
|
|
antispoof_opt : label {
|
|
if (antispoof_opts.label) {
|
|
yyerror("label cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
antispoof_opts.label = $1;
|
|
}
|
|
| RTABLE NUMBER {
|
|
if ($2 < 0 || $2 > rt_tableid_max()) {
|
|
yyerror("invalid rtable id");
|
|
YYERROR;
|
|
}
|
|
antispoof_opts.rtableid = $2;
|
|
}
|
|
;
|
|
|
|
not : '!' { $$ = 1; }
|
|
| /* empty */ { $$ = 0; }
|
|
;
|
|
|
|
tabledef : TABLE '<' STRING '>' table_opts {
|
|
struct node_host *h, *nh;
|
|
struct node_tinit *ti, *nti;
|
|
|
|
if (strlen($3) >= PF_TABLE_NAME_SIZE) {
|
|
yyerror("table name too long, max %d chars",
|
|
PF_TABLE_NAME_SIZE - 1);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
if (pf->loadopt & PFCTL_FLAG_TABLE)
|
|
if (process_tabledef($3, &$5)) {
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
free($3);
|
|
for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
|
|
ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
|
|
if (ti->file)
|
|
free(ti->file);
|
|
for (h = ti->host; h != NULL; h = nh) {
|
|
nh = h->next;
|
|
free(h);
|
|
}
|
|
nti = SIMPLEQ_NEXT(ti, entries);
|
|
free(ti);
|
|
}
|
|
}
|
|
;
|
|
|
|
table_opts : {
|
|
bzero(&table_opts, sizeof table_opts);
|
|
SIMPLEQ_INIT(&table_opts.init_nodes);
|
|
}
|
|
table_opts_l
|
|
{ $$ = table_opts; }
|
|
| /* empty */
|
|
{
|
|
bzero(&table_opts, sizeof table_opts);
|
|
SIMPLEQ_INIT(&table_opts.init_nodes);
|
|
$$ = table_opts;
|
|
}
|
|
;
|
|
|
|
table_opts_l : table_opts_l table_opt
|
|
| table_opt
|
|
;
|
|
|
|
table_opt : STRING {
|
|
if (!strcmp($1, "const"))
|
|
table_opts.flags |= PFR_TFLAG_CONST;
|
|
else if (!strcmp($1, "persist"))
|
|
table_opts.flags |= PFR_TFLAG_PERSIST;
|
|
else if (!strcmp($1, "counters"))
|
|
table_opts.flags |= PFR_TFLAG_COUNTERS;
|
|
else {
|
|
yyerror("invalid table option '%s'", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
| '{' optnl '}' { table_opts.init_addr = 1; }
|
|
| '{' optnl host_list '}' {
|
|
struct node_host *n;
|
|
struct node_tinit *ti;
|
|
|
|
for (n = $3; n != NULL; n = n->next) {
|
|
switch (n->addr.type) {
|
|
case PF_ADDR_ADDRMASK:
|
|
continue; /* ok */
|
|
case PF_ADDR_RANGE:
|
|
yyerror("address ranges are not "
|
|
"permitted inside tables");
|
|
break;
|
|
case PF_ADDR_DYNIFTL:
|
|
yyerror("dynamic addresses are not "
|
|
"permitted inside tables");
|
|
break;
|
|
case PF_ADDR_TABLE:
|
|
yyerror("tables cannot contain tables");
|
|
break;
|
|
case PF_ADDR_NOROUTE:
|
|
yyerror("\"no-route\" is not permitted "
|
|
"inside tables");
|
|
break;
|
|
case PF_ADDR_URPFFAILED:
|
|
yyerror("\"urpf-failed\" is not "
|
|
"permitted inside tables");
|
|
break;
|
|
default:
|
|
yyerror("unknown address type %d",
|
|
n->addr.type);
|
|
}
|
|
YYERROR;
|
|
}
|
|
if (!(ti = calloc(1, sizeof(*ti))))
|
|
err(1, "table_opt: calloc");
|
|
ti->host = $3;
|
|
SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
|
|
entries);
|
|
table_opts.init_addr = 1;
|
|
}
|
|
| FILENAME STRING {
|
|
struct node_tinit *ti;
|
|
|
|
if (!(ti = calloc(1, sizeof(*ti))))
|
|
err(1, "table_opt: calloc");
|
|
ti->file = $2;
|
|
SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
|
|
entries);
|
|
table_opts.init_addr = 1;
|
|
}
|
|
;
|
|
|
|
altqif : ALTQ interface queue_opts QUEUE qassign {
|
|
struct pf_altq a;
|
|
|
|
if (check_rulestate(PFCTL_STATE_QUEUE))
|
|
YYERROR;
|
|
|
|
memset(&a, 0, sizeof(a));
|
|
if ($3.scheduler.qtype == ALTQT_NONE) {
|
|
yyerror("no scheduler specified!");
|
|
YYERROR;
|
|
}
|
|
a.scheduler = $3.scheduler.qtype;
|
|
a.qlimit = $3.qlimit;
|
|
a.tbrsize = $3.tbrsize;
|
|
if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
|
|
yyerror("no child queues specified");
|
|
YYERROR;
|
|
}
|
|
if (expand_altq(&a, $2, $5, $3.queue_bwspec,
|
|
&$3.scheduler))
|
|
YYERROR;
|
|
}
|
|
;
|
|
|
|
queuespec : QUEUE STRING interface queue_opts qassign {
|
|
struct pf_altq a;
|
|
|
|
if (check_rulestate(PFCTL_STATE_QUEUE)) {
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
|
|
memset(&a, 0, sizeof(a));
|
|
|
|
if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
|
|
sizeof(a.qname)) {
|
|
yyerror("queue name too long (max "
|
|
"%d chars)", PF_QNAME_SIZE-1);
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
free($2);
|
|
if ($4.tbrsize) {
|
|
yyerror("cannot specify tbrsize for queue");
|
|
YYERROR;
|
|
}
|
|
if ($4.priority > 255) {
|
|
yyerror("priority out of range: max 255");
|
|
YYERROR;
|
|
}
|
|
a.priority = $4.priority;
|
|
a.qlimit = $4.qlimit;
|
|
a.scheduler = $4.scheduler.qtype;
|
|
if (expand_queue(&a, $3, $5, $4.queue_bwspec,
|
|
&$4.scheduler)) {
|
|
yyerror("errors in queue definition");
|
|
YYERROR;
|
|
}
|
|
}
|
|
;
|
|
|
|
queue_opts : {
|
|
bzero(&queue_opts, sizeof queue_opts);
|
|
queue_opts.priority = DEFAULT_PRIORITY;
|
|
queue_opts.qlimit = DEFAULT_QLIMIT;
|
|
queue_opts.scheduler.qtype = ALTQT_NONE;
|
|
queue_opts.queue_bwspec.bw_percent = 100;
|
|
}
|
|
queue_opts_l
|
|
{ $$ = queue_opts; }
|
|
| /* empty */ {
|
|
bzero(&queue_opts, sizeof queue_opts);
|
|
queue_opts.priority = DEFAULT_PRIORITY;
|
|
queue_opts.qlimit = DEFAULT_QLIMIT;
|
|
queue_opts.scheduler.qtype = ALTQT_NONE;
|
|
queue_opts.queue_bwspec.bw_percent = 100;
|
|
$$ = queue_opts;
|
|
}
|
|
;
|
|
|
|
queue_opts_l : queue_opts_l queue_opt
|
|
| queue_opt
|
|
;
|
|
|
|
queue_opt : BANDWIDTH bandwidth {
|
|
if (queue_opts.marker & QOM_BWSPEC) {
|
|
yyerror("bandwidth cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_BWSPEC;
|
|
queue_opts.queue_bwspec = $2;
|
|
}
|
|
| PRIORITY NUMBER {
|
|
if (queue_opts.marker & QOM_PRIORITY) {
|
|
yyerror("priority cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > 255) {
|
|
yyerror("priority out of range: max 255");
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_PRIORITY;
|
|
queue_opts.priority = $2;
|
|
}
|
|
| QLIMIT NUMBER {
|
|
if (queue_opts.marker & QOM_QLIMIT) {
|
|
yyerror("qlimit cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > 65535) {
|
|
yyerror("qlimit out of range: max 65535");
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_QLIMIT;
|
|
queue_opts.qlimit = $2;
|
|
}
|
|
| scheduler {
|
|
if (queue_opts.marker & QOM_SCHEDULER) {
|
|
yyerror("scheduler cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_SCHEDULER;
|
|
queue_opts.scheduler = $1;
|
|
}
|
|
| TBRSIZE NUMBER {
|
|
if (queue_opts.marker & QOM_TBRSIZE) {
|
|
yyerror("tbrsize cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > UINT_MAX) {
|
|
yyerror("tbrsize too big: max %u", UINT_MAX);
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_TBRSIZE;
|
|
queue_opts.tbrsize = $2;
|
|
}
|
|
;
|
|
|
|
bandwidth : STRING {
|
|
double bps;
|
|
char *cp;
|
|
|
|
$$.bw_percent = 0;
|
|
|
|
bps = strtod($1, &cp);
|
|
if (cp != NULL) {
|
|
if (strlen(cp) > 1) {
|
|
char *cu = cp + 1;
|
|
if (!strcmp(cu, "Bit") ||
|
|
!strcmp(cu, "B") ||
|
|
!strcmp(cu, "bit") ||
|
|
!strcmp(cu, "b")) {
|
|
*cu = 0;
|
|
}
|
|
}
|
|
if (!strcmp(cp, "b"))
|
|
; /* nothing */
|
|
else if (!strcmp(cp, "K"))
|
|
bps *= 1000;
|
|
else if (!strcmp(cp, "M"))
|
|
bps *= 1000 * 1000;
|
|
else if (!strcmp(cp, "G"))
|
|
bps *= 1000 * 1000 * 1000;
|
|
else if (!strcmp(cp, "%")) {
|
|
if (bps < 0 || bps > 100) {
|
|
yyerror("bandwidth spec "
|
|
"out of range");
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
$$.bw_percent = bps;
|
|
bps = 0;
|
|
} else {
|
|
yyerror("unknown unit %s", cp);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
}
|
|
free($1);
|
|
$$.bw_absolute = (u_int64_t)bps;
|
|
}
|
|
| NUMBER {
|
|
if ($1 < 0 || $1 >= LLONG_MAX) {
|
|
yyerror("bandwidth number too big");
|
|
YYERROR;
|
|
}
|
|
$$.bw_percent = 0;
|
|
$$.bw_absolute = $1;
|
|
}
|
|
;
|
|
|
|
scheduler : CBQ {
|
|
$$.qtype = ALTQT_CBQ;
|
|
$$.data.cbq_opts.flags = 0;
|
|
}
|
|
| CBQ '(' cbqflags_list ')' {
|
|
$$.qtype = ALTQT_CBQ;
|
|
$$.data.cbq_opts.flags = $3;
|
|
}
|
|
| PRIQ {
|
|
$$.qtype = ALTQT_PRIQ;
|
|
$$.data.priq_opts.flags = 0;
|
|
}
|
|
| PRIQ '(' priqflags_list ')' {
|
|
$$.qtype = ALTQT_PRIQ;
|
|
$$.data.priq_opts.flags = $3;
|
|
}
|
|
| HFSC {
|
|
$$.qtype = ALTQT_HFSC;
|
|
bzero(&$$.data.hfsc_opts,
|
|
sizeof(struct node_hfsc_opts));
|
|
}
|
|
| HFSC '(' hfsc_opts ')' {
|
|
$$.qtype = ALTQT_HFSC;
|
|
$$.data.hfsc_opts = $3;
|
|
}
|
|
| FAIRQ {
|
|
$$.qtype = ALTQT_FAIRQ;
|
|
bzero(&$$.data.fairq_opts,
|
|
sizeof(struct node_fairq_opts));
|
|
}
|
|
| FAIRQ '(' fairq_opts ')' {
|
|
$$.qtype = ALTQT_FAIRQ;
|
|
$$.data.fairq_opts = $3;
|
|
}
|
|
| CODEL {
|
|
$$.qtype = ALTQT_CODEL;
|
|
bzero(&$$.data.codel_opts,
|
|
sizeof(struct codel_opts));
|
|
}
|
|
| CODEL '(' codel_opts ')' {
|
|
$$.qtype = ALTQT_CODEL;
|
|
$$.data.codel_opts = $3;
|
|
}
|
|
;
|
|
|
|
cbqflags_list : cbqflags_item { $$ |= $1; }
|
|
| cbqflags_list comma cbqflags_item { $$ |= $3; }
|
|
;
|
|
|
|
cbqflags_item : STRING {
|
|
if (!strcmp($1, "default"))
|
|
$$ = CBQCLF_DEFCLASS;
|
|
else if (!strcmp($1, "borrow"))
|
|
$$ = CBQCLF_BORROW;
|
|
else if (!strcmp($1, "red"))
|
|
$$ = CBQCLF_RED;
|
|
else if (!strcmp($1, "ecn"))
|
|
$$ = CBQCLF_RED|CBQCLF_ECN;
|
|
else if (!strcmp($1, "rio"))
|
|
$$ = CBQCLF_RIO;
|
|
else if (!strcmp($1, "codel"))
|
|
$$ = CBQCLF_CODEL;
|
|
else {
|
|
yyerror("unknown cbq flag \"%s\"", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
priqflags_list : priqflags_item { $$ |= $1; }
|
|
| priqflags_list comma priqflags_item { $$ |= $3; }
|
|
;
|
|
|
|
priqflags_item : STRING {
|
|
if (!strcmp($1, "default"))
|
|
$$ = PRCF_DEFAULTCLASS;
|
|
else if (!strcmp($1, "red"))
|
|
$$ = PRCF_RED;
|
|
else if (!strcmp($1, "ecn"))
|
|
$$ = PRCF_RED|PRCF_ECN;
|
|
else if (!strcmp($1, "rio"))
|
|
$$ = PRCF_RIO;
|
|
else if (!strcmp($1, "codel"))
|
|
$$ = PRCF_CODEL;
|
|
else {
|
|
yyerror("unknown priq flag \"%s\"", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
hfsc_opts : {
|
|
bzero(&hfsc_opts,
|
|
sizeof(struct node_hfsc_opts));
|
|
}
|
|
hfscopts_list {
|
|
$$ = hfsc_opts;
|
|
}
|
|
;
|
|
|
|
hfscopts_list : hfscopts_item
|
|
| hfscopts_list comma hfscopts_item
|
|
;
|
|
|
|
hfscopts_item : LINKSHARE bandwidth {
|
|
if (hfsc_opts.linkshare.used) {
|
|
yyerror("linkshare already specified");
|
|
YYERROR;
|
|
}
|
|
hfsc_opts.linkshare.m2 = $2;
|
|
hfsc_opts.linkshare.used = 1;
|
|
}
|
|
| LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
|
|
{
|
|
if ($5 < 0 || $5 > INT_MAX) {
|
|
yyerror("timing in curve out of range");
|
|
YYERROR;
|
|
}
|
|
if (hfsc_opts.linkshare.used) {
|
|
yyerror("linkshare already specified");
|
|
YYERROR;
|
|
}
|
|
hfsc_opts.linkshare.m1 = $3;
|
|
hfsc_opts.linkshare.d = $5;
|
|
hfsc_opts.linkshare.m2 = $7;
|
|
hfsc_opts.linkshare.used = 1;
|
|
}
|
|
| REALTIME bandwidth {
|
|
if (hfsc_opts.realtime.used) {
|
|
yyerror("realtime already specified");
|
|
YYERROR;
|
|
}
|
|
hfsc_opts.realtime.m2 = $2;
|
|
hfsc_opts.realtime.used = 1;
|
|
}
|
|
| REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
|
|
{
|
|
if ($5 < 0 || $5 > INT_MAX) {
|
|
yyerror("timing in curve out of range");
|
|
YYERROR;
|
|
}
|
|
if (hfsc_opts.realtime.used) {
|
|
yyerror("realtime already specified");
|
|
YYERROR;
|
|
}
|
|
hfsc_opts.realtime.m1 = $3;
|
|
hfsc_opts.realtime.d = $5;
|
|
hfsc_opts.realtime.m2 = $7;
|
|
hfsc_opts.realtime.used = 1;
|
|
}
|
|
| UPPERLIMIT bandwidth {
|
|
if (hfsc_opts.upperlimit.used) {
|
|
yyerror("upperlimit already specified");
|
|
YYERROR;
|
|
}
|
|
hfsc_opts.upperlimit.m2 = $2;
|
|
hfsc_opts.upperlimit.used = 1;
|
|
}
|
|
| UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
|
|
{
|
|
if ($5 < 0 || $5 > INT_MAX) {
|
|
yyerror("timing in curve out of range");
|
|
YYERROR;
|
|
}
|
|
if (hfsc_opts.upperlimit.used) {
|
|
yyerror("upperlimit already specified");
|
|
YYERROR;
|
|
}
|
|
hfsc_opts.upperlimit.m1 = $3;
|
|
hfsc_opts.upperlimit.d = $5;
|
|
hfsc_opts.upperlimit.m2 = $7;
|
|
hfsc_opts.upperlimit.used = 1;
|
|
}
|
|
| STRING {
|
|
if (!strcmp($1, "default"))
|
|
hfsc_opts.flags |= HFCF_DEFAULTCLASS;
|
|
else if (!strcmp($1, "red"))
|
|
hfsc_opts.flags |= HFCF_RED;
|
|
else if (!strcmp($1, "ecn"))
|
|
hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
|
|
else if (!strcmp($1, "rio"))
|
|
hfsc_opts.flags |= HFCF_RIO;
|
|
else if (!strcmp($1, "codel"))
|
|
hfsc_opts.flags |= HFCF_CODEL;
|
|
else {
|
|
yyerror("unknown hfsc flag \"%s\"", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
fairq_opts : {
|
|
bzero(&fairq_opts,
|
|
sizeof(struct node_fairq_opts));
|
|
}
|
|
fairqopts_list {
|
|
$$ = fairq_opts;
|
|
}
|
|
;
|
|
|
|
fairqopts_list : fairqopts_item
|
|
| fairqopts_list comma fairqopts_item
|
|
;
|
|
|
|
fairqopts_item : LINKSHARE bandwidth {
|
|
if (fairq_opts.linkshare.used) {
|
|
yyerror("linkshare already specified");
|
|
YYERROR;
|
|
}
|
|
fairq_opts.linkshare.m2 = $2;
|
|
fairq_opts.linkshare.used = 1;
|
|
}
|
|
| LINKSHARE '(' bandwidth number bandwidth ')' {
|
|
if (fairq_opts.linkshare.used) {
|
|
yyerror("linkshare already specified");
|
|
YYERROR;
|
|
}
|
|
fairq_opts.linkshare.m1 = $3;
|
|
fairq_opts.linkshare.d = $4;
|
|
fairq_opts.linkshare.m2 = $5;
|
|
fairq_opts.linkshare.used = 1;
|
|
}
|
|
| HOGS bandwidth {
|
|
fairq_opts.hogs_bw = $2;
|
|
}
|
|
| BUCKETS number {
|
|
fairq_opts.nbuckets = $2;
|
|
}
|
|
| STRING {
|
|
if (!strcmp($1, "default"))
|
|
fairq_opts.flags |= FARF_DEFAULTCLASS;
|
|
else if (!strcmp($1, "red"))
|
|
fairq_opts.flags |= FARF_RED;
|
|
else if (!strcmp($1, "ecn"))
|
|
fairq_opts.flags |= FARF_RED|FARF_ECN;
|
|
else if (!strcmp($1, "rio"))
|
|
fairq_opts.flags |= FARF_RIO;
|
|
else if (!strcmp($1, "codel"))
|
|
fairq_opts.flags |= FARF_CODEL;
|
|
else {
|
|
yyerror("unknown fairq flag \"%s\"", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
codel_opts : {
|
|
bzero(&codel_opts,
|
|
sizeof(struct codel_opts));
|
|
}
|
|
codelopts_list {
|
|
$$ = codel_opts;
|
|
}
|
|
;
|
|
|
|
codelopts_list : codelopts_item
|
|
| codelopts_list comma codelopts_item
|
|
;
|
|
|
|
codelopts_item : INTERVAL number {
|
|
if (codel_opts.interval) {
|
|
yyerror("interval already specified");
|
|
YYERROR;
|
|
}
|
|
codel_opts.interval = $2;
|
|
}
|
|
| TARGET number {
|
|
if (codel_opts.target) {
|
|
yyerror("target already specified");
|
|
YYERROR;
|
|
}
|
|
codel_opts.target = $2;
|
|
}
|
|
| STRING {
|
|
if (!strcmp($1, "ecn"))
|
|
codel_opts.ecn = 1;
|
|
else {
|
|
yyerror("unknown codel option \"%s\"", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
qassign : /* empty */ { $$ = NULL; }
|
|
| qassign_item { $$ = $1; }
|
|
| '{' optnl qassign_list '}' { $$ = $3; }
|
|
;
|
|
|
|
qassign_list : qassign_item optnl { $$ = $1; }
|
|
| qassign_list comma qassign_item optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
qassign_item : STRING {
|
|
$$ = calloc(1, sizeof(struct node_queue));
|
|
if ($$ == NULL)
|
|
err(1, "qassign_item: calloc");
|
|
if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
|
|
sizeof($$->queue)) {
|
|
yyerror("queue name '%s' too long (max "
|
|
"%d chars)", $1, sizeof($$->queue)-1);
|
|
free($1);
|
|
free($$);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
pfrule : action dir logquick interface route af proto fromto
|
|
filter_opts
|
|
{
|
|
struct pf_rule r;
|
|
struct node_state_opt *o;
|
|
struct node_proto *proto;
|
|
int srctrack = 0;
|
|
int statelock = 0;
|
|
int adaptive = 0;
|
|
int defaults = 0;
|
|
|
|
if (check_rulestate(PFCTL_STATE_FILTER))
|
|
YYERROR;
|
|
|
|
memset(&r, 0, sizeof(r));
|
|
|
|
r.action = $1.b1;
|
|
switch ($1.b2) {
|
|
case PFRULE_RETURNRST:
|
|
r.rule_flag |= PFRULE_RETURNRST;
|
|
r.return_ttl = $1.w;
|
|
break;
|
|
case PFRULE_RETURNICMP:
|
|
r.rule_flag |= PFRULE_RETURNICMP;
|
|
r.return_icmp = $1.w;
|
|
r.return_icmp6 = $1.w2;
|
|
break;
|
|
case PFRULE_RETURN:
|
|
r.rule_flag |= PFRULE_RETURN;
|
|
r.return_icmp = $1.w;
|
|
r.return_icmp6 = $1.w2;
|
|
break;
|
|
}
|
|
r.direction = $2;
|
|
r.log = $3.log;
|
|
r.logif = $3.logif;
|
|
r.quick = $3.quick;
|
|
r.prob = $9.prob;
|
|
r.rtableid = $9.rtableid;
|
|
|
|
if ($9.marker & FOM_PRIO) {
|
|
if ($9.prio == 0)
|
|
r.prio = PF_PRIO_ZERO;
|
|
else
|
|
r.prio = $9.prio;
|
|
}
|
|
if ($9.marker & FOM_SETPRIO) {
|
|
r.set_prio[0] = $9.set_prio[0];
|
|
r.set_prio[1] = $9.set_prio[1];
|
|
r.scrub_flags |= PFSTATE_SETPRIO;
|
|
}
|
|
|
|
r.af = $6;
|
|
if ($9.tag)
|
|
if (strlcpy(r.tagname, $9.tag,
|
|
PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
if ($9.match_tag)
|
|
if (strlcpy(r.match_tagname, $9.match_tag,
|
|
PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
r.match_tag_not = $9.match_tag_not;
|
|
if (rule_label(&r, $9.label))
|
|
YYERROR;
|
|
free($9.label);
|
|
r.flags = $9.flags.b1;
|
|
r.flagset = $9.flags.b2;
|
|
if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
|
|
yyerror("flags always false");
|
|
YYERROR;
|
|
}
|
|
if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
|
|
for (proto = $7; proto != NULL &&
|
|
proto->proto != IPPROTO_TCP;
|
|
proto = proto->next)
|
|
; /* nothing */
|
|
if (proto == NULL && $7 != NULL) {
|
|
if ($9.flags.b1 || $9.flags.b2)
|
|
yyerror(
|
|
"flags only apply to tcp");
|
|
if ($8.src_os)
|
|
yyerror(
|
|
"OS fingerprinting only "
|
|
"apply to tcp");
|
|
YYERROR;
|
|
}
|
|
#if 0
|
|
if (($9.flags.b1 & parse_flags("S")) == 0 &&
|
|
$8.src_os) {
|
|
yyerror("OS fingerprinting requires "
|
|
"the SYN TCP flag (flags S/SA)");
|
|
YYERROR;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
r.tos = $9.tos;
|
|
r.keep_state = $9.keep.action;
|
|
o = $9.keep.options;
|
|
|
|
/* 'keep state' by default on pass rules. */
|
|
if (!r.keep_state && !r.action &&
|
|
!($9.marker & FOM_KEEP)) {
|
|
r.keep_state = PF_STATE_NORMAL;
|
|
o = keep_state_defaults;
|
|
defaults = 1;
|
|
}
|
|
|
|
while (o) {
|
|
struct node_state_opt *p = o;
|
|
|
|
switch (o->type) {
|
|
case PF_STATE_OPT_MAX:
|
|
if (r.max_states) {
|
|
yyerror("state option 'max' "
|
|
"multiple definitions");
|
|
YYERROR;
|
|
}
|
|
r.max_states = o->data.max_states;
|
|
break;
|
|
case PF_STATE_OPT_NOSYNC:
|
|
if (r.rule_flag & PFRULE_NOSYNC) {
|
|
yyerror("state option 'sync' "
|
|
"multiple definitions");
|
|
YYERROR;
|
|
}
|
|
r.rule_flag |= PFRULE_NOSYNC;
|
|
break;
|
|
case PF_STATE_OPT_SRCTRACK:
|
|
if (srctrack) {
|
|
yyerror("state option "
|
|
"'source-track' "
|
|
"multiple definitions");
|
|
YYERROR;
|
|
}
|
|
srctrack = o->data.src_track;
|
|
r.rule_flag |= PFRULE_SRCTRACK;
|
|
break;
|
|
case PF_STATE_OPT_MAX_SRC_STATES:
|
|
if (r.max_src_states) {
|
|
yyerror("state option "
|
|
"'max-src-states' "
|
|
"multiple definitions");
|
|
YYERROR;
|
|
}
|
|
if (o->data.max_src_states == 0) {
|
|
yyerror("'max-src-states' must "
|
|
"be > 0");
|
|
YYERROR;
|
|
}
|
|
r.max_src_states =
|
|
o->data.max_src_states;
|
|
r.rule_flag |= PFRULE_SRCTRACK;
|
|
break;
|
|
case PF_STATE_OPT_OVERLOAD:
|
|
if (r.overload_tblname[0]) {
|
|
yyerror("multiple 'overload' "
|
|
"table definitions");
|
|
YYERROR;
|
|
}
|
|
if (strlcpy(r.overload_tblname,
|
|
o->data.overload.tblname,
|
|
PF_TABLE_NAME_SIZE) >=
|
|
PF_TABLE_NAME_SIZE) {
|
|
yyerror("state option: "
|
|
"strlcpy");
|
|
YYERROR;
|
|
}
|
|
r.flush = o->data.overload.flush;
|
|
break;
|
|
case PF_STATE_OPT_MAX_SRC_CONN:
|
|
if (r.max_src_conn) {
|
|
yyerror("state option "
|
|
"'max-src-conn' "
|
|
"multiple definitions");
|
|
YYERROR;
|
|
}
|
|
if (o->data.max_src_conn == 0) {
|
|
yyerror("'max-src-conn' "
|
|
"must be > 0");
|
|
YYERROR;
|
|
}
|
|
r.max_src_conn =
|
|
o->data.max_src_conn;
|
|
r.rule_flag |= PFRULE_SRCTRACK |
|
|
PFRULE_RULESRCTRACK;
|
|
break;
|
|
case PF_STATE_OPT_MAX_SRC_CONN_RATE:
|
|
if (r.max_src_conn_rate.limit) {
|
|
yyerror("state option "
|
|
"'max-src-conn-rate' "
|
|
"multiple definitions");
|
|
YYERROR;
|
|
}
|
|
if (!o->data.max_src_conn_rate.limit ||
|
|
!o->data.max_src_conn_rate.seconds) {
|
|
yyerror("'max-src-conn-rate' "
|
|
"values must be > 0");
|
|
YYERROR;
|
|
}
|
|
if (o->data.max_src_conn_rate.limit >
|
|
PF_THRESHOLD_MAX) {
|
|
yyerror("'max-src-conn-rate' "
|
|
"maximum rate must be < %u",
|
|
PF_THRESHOLD_MAX);
|
|
YYERROR;
|
|
}
|
|
r.max_src_conn_rate.limit =
|
|
o->data.max_src_conn_rate.limit;
|
|
r.max_src_conn_rate.seconds =
|
|
o->data.max_src_conn_rate.seconds;
|
|
r.rule_flag |= PFRULE_SRCTRACK |
|
|
PFRULE_RULESRCTRACK;
|
|
break;
|
|
case PF_STATE_OPT_MAX_SRC_NODES:
|
|
if (r.max_src_nodes) {
|
|
yyerror("state option "
|
|
"'max-src-nodes' "
|
|
"multiple definitions");
|
|
YYERROR;
|
|
}
|
|
if (o->data.max_src_nodes == 0) {
|
|
yyerror("'max-src-nodes' must "
|
|
"be > 0");
|
|
YYERROR;
|
|
}
|
|
r.max_src_nodes =
|
|
o->data.max_src_nodes;
|
|
r.rule_flag |= PFRULE_SRCTRACK |
|
|
PFRULE_RULESRCTRACK;
|
|
break;
|
|
case PF_STATE_OPT_STATELOCK:
|
|
if (statelock) {
|
|
yyerror("state locking option: "
|
|
"multiple definitions");
|
|
YYERROR;
|
|
}
|
|
statelock = 1;
|
|
r.rule_flag |= o->data.statelock;
|
|
break;
|
|
case PF_STATE_OPT_SLOPPY:
|
|
if (r.rule_flag & PFRULE_STATESLOPPY) {
|
|
yyerror("state sloppy option: "
|
|
"multiple definitions");
|
|
YYERROR;
|
|
}
|
|
r.rule_flag |= PFRULE_STATESLOPPY;
|
|
break;
|
|
case PF_STATE_OPT_TIMEOUT:
|
|
if (o->data.timeout.number ==
|
|
PFTM_ADAPTIVE_START ||
|
|
o->data.timeout.number ==
|
|
PFTM_ADAPTIVE_END)
|
|
adaptive = 1;
|
|
if (r.timeout[o->data.timeout.number]) {
|
|
yyerror("state timeout %s "
|
|
"multiple definitions",
|
|
pf_timeouts[o->data.
|
|
timeout.number].name);
|
|
YYERROR;
|
|
}
|
|
r.timeout[o->data.timeout.number] =
|
|
o->data.timeout.seconds;
|
|
}
|
|
o = o->next;
|
|
if (!defaults)
|
|
free(p);
|
|
}
|
|
|
|
/* 'flags S/SA' by default on stateful rules */
|
|
if (!r.action && !r.flags && !r.flagset &&
|
|
!$9.fragment && !($9.marker & FOM_FLAGS) &&
|
|
r.keep_state) {
|
|
r.flags = parse_flags("S");
|
|
r.flagset = parse_flags("SA");
|
|
}
|
|
if (!adaptive && r.max_states) {
|
|
r.timeout[PFTM_ADAPTIVE_START] =
|
|
(r.max_states / 10) * 6;
|
|
r.timeout[PFTM_ADAPTIVE_END] =
|
|
(r.max_states / 10) * 12;
|
|
}
|
|
if (r.rule_flag & PFRULE_SRCTRACK) {
|
|
if (srctrack == PF_SRCTRACK_GLOBAL &&
|
|
r.max_src_nodes) {
|
|
yyerror("'max-src-nodes' is "
|
|
"incompatible with "
|
|
"'source-track global'");
|
|
YYERROR;
|
|
}
|
|
if (srctrack == PF_SRCTRACK_GLOBAL &&
|
|
r.max_src_conn) {
|
|
yyerror("'max-src-conn' is "
|
|
"incompatible with "
|
|
"'source-track global'");
|
|
YYERROR;
|
|
}
|
|
if (srctrack == PF_SRCTRACK_GLOBAL &&
|
|
r.max_src_conn_rate.seconds) {
|
|
yyerror("'max-src-conn-rate' is "
|
|
"incompatible with "
|
|
"'source-track global'");
|
|
YYERROR;
|
|
}
|
|
if (r.timeout[PFTM_SRC_NODE] <
|
|
r.max_src_conn_rate.seconds)
|
|
r.timeout[PFTM_SRC_NODE] =
|
|
r.max_src_conn_rate.seconds;
|
|
r.rule_flag |= PFRULE_SRCTRACK;
|
|
if (srctrack == PF_SRCTRACK_RULE)
|
|
r.rule_flag |= PFRULE_RULESRCTRACK;
|
|
}
|
|
if (r.keep_state && !statelock)
|
|
r.rule_flag |= default_statelock;
|
|
|
|
if ($9.fragment)
|
|
r.rule_flag |= PFRULE_FRAGMENT;
|
|
r.allow_opts = $9.allowopts;
|
|
|
|
decide_address_family($8.src.host, &r.af);
|
|
decide_address_family($8.dst.host, &r.af);
|
|
|
|
if ($5.rt) {
|
|
if (!r.direction) {
|
|
yyerror("direction must be explicit "
|
|
"with rules that specify routing");
|
|
YYERROR;
|
|
}
|
|
r.rt = $5.rt;
|
|
r.rpool.opts = $5.pool_opts;
|
|
if ($5.key != NULL)
|
|
memcpy(&r.rpool.key, $5.key,
|
|
sizeof(struct pf_poolhashkey));
|
|
}
|
|
if (r.rt) {
|
|
decide_address_family($5.host, &r.af);
|
|
remove_invalid_hosts(&$5.host, &r.af);
|
|
if ($5.host == NULL) {
|
|
yyerror("no routing address with "
|
|
"matching address family found.");
|
|
YYERROR;
|
|
}
|
|
if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
|
|
PF_POOL_NONE && ($5.host->next != NULL ||
|
|
$5.host->addr.type == PF_ADDR_TABLE ||
|
|
DYNIF_MULTIADDR($5.host->addr)))
|
|
r.rpool.opts |= PF_POOL_ROUNDROBIN;
|
|
if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
|
|
PF_POOL_ROUNDROBIN &&
|
|
disallow_table($5.host, "tables are only "
|
|
"supported in round-robin routing pools"))
|
|
YYERROR;
|
|
if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
|
|
PF_POOL_ROUNDROBIN &&
|
|
disallow_alias($5.host, "interface (%s) "
|
|
"is only supported in round-robin "
|
|
"routing pools"))
|
|
YYERROR;
|
|
if ($5.host->next != NULL) {
|
|
if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
|
|
PF_POOL_ROUNDROBIN) {
|
|
yyerror("r.rpool.opts must "
|
|
"be PF_POOL_ROUNDROBIN");
|
|
YYERROR;
|
|
}
|
|
}
|
|
}
|
|
if ($9.queues.qname != NULL) {
|
|
if (strlcpy(r.qname, $9.queues.qname,
|
|
sizeof(r.qname)) >= sizeof(r.qname)) {
|
|
yyerror("rule qname too long (max "
|
|
"%d chars)", sizeof(r.qname)-1);
|
|
YYERROR;
|
|
}
|
|
free($9.queues.qname);
|
|
}
|
|
if ($9.queues.pqname != NULL) {
|
|
if (strlcpy(r.pqname, $9.queues.pqname,
|
|
sizeof(r.pqname)) >= sizeof(r.pqname)) {
|
|
yyerror("rule pqname too long (max "
|
|
"%d chars)", sizeof(r.pqname)-1);
|
|
YYERROR;
|
|
}
|
|
free($9.queues.pqname);
|
|
}
|
|
#ifdef __FreeBSD__
|
|
r.divert.port = $9.divert.port;
|
|
#else
|
|
if ((r.divert.port = $9.divert.port)) {
|
|
if (r.direction == PF_OUT) {
|
|
if ($9.divert.addr) {
|
|
yyerror("address specified "
|
|
"for outgoing divert");
|
|
YYERROR;
|
|
}
|
|
bzero(&r.divert.addr,
|
|
sizeof(r.divert.addr));
|
|
} else {
|
|
if (!$9.divert.addr) {
|
|
yyerror("no address specified "
|
|
"for incoming divert");
|
|
YYERROR;
|
|
}
|
|
if ($9.divert.addr->af != r.af) {
|
|
yyerror("address family "
|
|
"mismatch for divert");
|
|
YYERROR;
|
|
}
|
|
r.divert.addr =
|
|
$9.divert.addr->addr.v.a.addr;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
expand_rule(&r, $4, $5.host, $7, $8.src_os,
|
|
$8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
|
|
$9.uid, $9.gid, $9.icmpspec, "");
|
|
}
|
|
;
|
|
|
|
filter_opts : {
|
|
bzero(&filter_opts, sizeof filter_opts);
|
|
filter_opts.rtableid = -1;
|
|
}
|
|
filter_opts_l
|
|
{ $$ = filter_opts; }
|
|
| /* empty */ {
|
|
bzero(&filter_opts, sizeof filter_opts);
|
|
filter_opts.rtableid = -1;
|
|
$$ = filter_opts;
|
|
}
|
|
;
|
|
|
|
filter_opts_l : filter_opts_l filter_opt
|
|
| filter_opt
|
|
;
|
|
|
|
filter_opt : USER uids {
|
|
if (filter_opts.uid)
|
|
$2->tail->next = filter_opts.uid;
|
|
filter_opts.uid = $2;
|
|
}
|
|
| GROUP gids {
|
|
if (filter_opts.gid)
|
|
$2->tail->next = filter_opts.gid;
|
|
filter_opts.gid = $2;
|
|
}
|
|
| flags {
|
|
if (filter_opts.marker & FOM_FLAGS) {
|
|
yyerror("flags cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
filter_opts.marker |= FOM_FLAGS;
|
|
filter_opts.flags.b1 |= $1.b1;
|
|
filter_opts.flags.b2 |= $1.b2;
|
|
filter_opts.flags.w |= $1.w;
|
|
filter_opts.flags.w2 |= $1.w2;
|
|
}
|
|
| icmpspec {
|
|
if (filter_opts.marker & FOM_ICMP) {
|
|
yyerror("icmp-type cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
filter_opts.marker |= FOM_ICMP;
|
|
filter_opts.icmpspec = $1;
|
|
}
|
|
| PRIO NUMBER {
|
|
if (filter_opts.marker & FOM_PRIO) {
|
|
yyerror("prio cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > PF_PRIO_MAX) {
|
|
yyerror("prio must be 0 - %u", PF_PRIO_MAX);
|
|
YYERROR;
|
|
}
|
|
filter_opts.marker |= FOM_PRIO;
|
|
filter_opts.prio = $2;
|
|
}
|
|
| TOS tos {
|
|
if (filter_opts.marker & FOM_TOS) {
|
|
yyerror("tos cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
filter_opts.marker |= FOM_TOS;
|
|
filter_opts.tos = $2;
|
|
}
|
|
| keep {
|
|
if (filter_opts.marker & FOM_KEEP) {
|
|
yyerror("modulate or keep cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
filter_opts.marker |= FOM_KEEP;
|
|
filter_opts.keep.action = $1.action;
|
|
filter_opts.keep.options = $1.options;
|
|
}
|
|
| FRAGMENT {
|
|
filter_opts.fragment = 1;
|
|
}
|
|
| ALLOWOPTS {
|
|
filter_opts.allowopts = 1;
|
|
}
|
|
| label {
|
|
if (filter_opts.label) {
|
|
yyerror("label cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
filter_opts.label = $1;
|
|
}
|
|
| qname {
|
|
if (filter_opts.queues.qname) {
|
|
yyerror("queue cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
filter_opts.queues = $1;
|
|
}
|
|
| TAG string {
|
|
filter_opts.tag = $2;
|
|
}
|
|
| not TAGGED string {
|
|
filter_opts.match_tag = $3;
|
|
filter_opts.match_tag_not = $1;
|
|
}
|
|
| PROBABILITY probability {
|
|
double p;
|
|
|
|
p = floor($2 * UINT_MAX + 0.5);
|
|
if (p < 0.0 || p > UINT_MAX) {
|
|
yyerror("invalid probability: %lf", p);
|
|
YYERROR;
|
|
}
|
|
filter_opts.prob = (u_int32_t)p;
|
|
if (filter_opts.prob == 0)
|
|
filter_opts.prob = 1;
|
|
}
|
|
| RTABLE NUMBER {
|
|
if ($2 < 0 || $2 > rt_tableid_max()) {
|
|
yyerror("invalid rtable id");
|
|
YYERROR;
|
|
}
|
|
filter_opts.rtableid = $2;
|
|
}
|
|
| DIVERTTO portplain {
|
|
#ifdef __FreeBSD__
|
|
filter_opts.divert.port = $2.a;
|
|
if (!filter_opts.divert.port) {
|
|
yyerror("invalid divert port: %u", ntohs($2.a));
|
|
YYERROR;
|
|
}
|
|
#endif
|
|
}
|
|
| DIVERTTO STRING PORT portplain {
|
|
#ifndef __FreeBSD__
|
|
if ((filter_opts.divert.addr = host($2)) == NULL) {
|
|
yyerror("could not parse divert address: %s",
|
|
$2);
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
#else
|
|
if ($2)
|
|
#endif
|
|
free($2);
|
|
filter_opts.divert.port = $4.a;
|
|
if (!filter_opts.divert.port) {
|
|
yyerror("invalid divert port: %u", ntohs($4.a));
|
|
YYERROR;
|
|
}
|
|
}
|
|
| DIVERTREPLY {
|
|
#ifdef __FreeBSD__
|
|
yyerror("divert-reply has no meaning in FreeBSD pf(4)");
|
|
YYERROR;
|
|
#else
|
|
filter_opts.divert.port = 1; /* some random value */
|
|
#endif
|
|
}
|
|
| filter_sets
|
|
;
|
|
|
|
filter_sets : SET '(' filter_sets_l ')' { $$ = filter_opts; }
|
|
| SET filter_set { $$ = filter_opts; }
|
|
;
|
|
|
|
filter_sets_l : filter_sets_l comma filter_set
|
|
| filter_set
|
|
;
|
|
|
|
filter_set : prio {
|
|
if (filter_opts.marker & FOM_SETPRIO) {
|
|
yyerror("prio cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
filter_opts.marker |= FOM_SETPRIO;
|
|
filter_opts.set_prio[0] = $1.b1;
|
|
filter_opts.set_prio[1] = $1.b2;
|
|
}
|
|
prio : PRIO NUMBER {
|
|
if ($2 < 0 || $2 > PF_PRIO_MAX) {
|
|
yyerror("prio must be 0 - %u", PF_PRIO_MAX);
|
|
YYERROR;
|
|
}
|
|
$$.b1 = $$.b2 = $2;
|
|
}
|
|
| PRIO '(' NUMBER comma NUMBER ')' {
|
|
if ($3 < 0 || $3 > PF_PRIO_MAX ||
|
|
$5 < 0 || $5 > PF_PRIO_MAX) {
|
|
yyerror("prio must be 0 - %u", PF_PRIO_MAX);
|
|
YYERROR;
|
|
}
|
|
$$.b1 = $3;
|
|
$$.b2 = $5;
|
|
}
|
|
;
|
|
|
|
probability : STRING {
|
|
char *e;
|
|
double p = strtod($1, &e);
|
|
|
|
if (*e == '%') {
|
|
p *= 0.01;
|
|
e++;
|
|
}
|
|
if (*e) {
|
|
yyerror("invalid probability: %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
$$ = p;
|
|
}
|
|
| NUMBER {
|
|
$$ = (double)$1;
|
|
}
|
|
;
|
|
|
|
|
|
action : PASS {
|
|
$$.b1 = PF_PASS;
|
|
$$.b2 = failpolicy;
|
|
$$.w = returnicmpdefault;
|
|
$$.w2 = returnicmp6default;
|
|
}
|
|
| BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; }
|
|
;
|
|
|
|
blockspec : /* empty */ {
|
|
$$.b2 = blockpolicy;
|
|
$$.w = returnicmpdefault;
|
|
$$.w2 = returnicmp6default;
|
|
}
|
|
| DROP {
|
|
$$.b2 = PFRULE_DROP;
|
|
$$.w = 0;
|
|
$$.w2 = 0;
|
|
}
|
|
| RETURNRST {
|
|
$$.b2 = PFRULE_RETURNRST;
|
|
$$.w = 0;
|
|
$$.w2 = 0;
|
|
}
|
|
| RETURNRST '(' TTL NUMBER ')' {
|
|
if ($4 < 0 || $4 > 255) {
|
|
yyerror("illegal ttl value %d", $4);
|
|
YYERROR;
|
|
}
|
|
$$.b2 = PFRULE_RETURNRST;
|
|
$$.w = $4;
|
|
$$.w2 = 0;
|
|
}
|
|
| RETURNICMP {
|
|
$$.b2 = PFRULE_RETURNICMP;
|
|
$$.w = returnicmpdefault;
|
|
$$.w2 = returnicmp6default;
|
|
}
|
|
| RETURNICMP6 {
|
|
$$.b2 = PFRULE_RETURNICMP;
|
|
$$.w = returnicmpdefault;
|
|
$$.w2 = returnicmp6default;
|
|
}
|
|
| RETURNICMP '(' reticmpspec ')' {
|
|
$$.b2 = PFRULE_RETURNICMP;
|
|
$$.w = $3;
|
|
$$.w2 = returnicmpdefault;
|
|
}
|
|
| RETURNICMP6 '(' reticmp6spec ')' {
|
|
$$.b2 = PFRULE_RETURNICMP;
|
|
$$.w = returnicmpdefault;
|
|
$$.w2 = $3;
|
|
}
|
|
| RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
|
|
$$.b2 = PFRULE_RETURNICMP;
|
|
$$.w = $3;
|
|
$$.w2 = $5;
|
|
}
|
|
| RETURN {
|
|
$$.b2 = PFRULE_RETURN;
|
|
$$.w = returnicmpdefault;
|
|
$$.w2 = returnicmp6default;
|
|
}
|
|
;
|
|
|
|
reticmpspec : STRING {
|
|
if (!($$ = parseicmpspec($1, AF_INET))) {
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
| NUMBER {
|
|
u_int8_t icmptype;
|
|
|
|
if ($1 < 0 || $1 > 255) {
|
|
yyerror("invalid icmp code %lu", $1);
|
|
YYERROR;
|
|
}
|
|
icmptype = returnicmpdefault >> 8;
|
|
$$ = (icmptype << 8 | $1);
|
|
}
|
|
;
|
|
|
|
reticmp6spec : STRING {
|
|
if (!($$ = parseicmpspec($1, AF_INET6))) {
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
| NUMBER {
|
|
u_int8_t icmptype;
|
|
|
|
if ($1 < 0 || $1 > 255) {
|
|
yyerror("invalid icmp code %lu", $1);
|
|
YYERROR;
|
|
}
|
|
icmptype = returnicmp6default >> 8;
|
|
$$ = (icmptype << 8 | $1);
|
|
}
|
|
;
|
|
|
|
dir : /* empty */ { $$ = PF_INOUT; }
|
|
| IN { $$ = PF_IN; }
|
|
| OUT { $$ = PF_OUT; }
|
|
;
|
|
|
|
quick : /* empty */ { $$.quick = 0; }
|
|
| QUICK { $$.quick = 1; }
|
|
;
|
|
|
|
logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; }
|
|
| log { $$ = $1; $$.quick = 0; }
|
|
| QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; }
|
|
| log QUICK { $$ = $1; $$.quick = 1; }
|
|
| QUICK log { $$ = $2; $$.quick = 1; }
|
|
;
|
|
|
|
log : LOG { $$.log = PF_LOG; $$.logif = 0; }
|
|
| LOG '(' logopts ')' {
|
|
$$.log = PF_LOG | $3.log;
|
|
$$.logif = $3.logif;
|
|
}
|
|
;
|
|
|
|
logopts : logopt { $$ = $1; }
|
|
| logopts comma logopt {
|
|
$$.log = $1.log | $3.log;
|
|
$$.logif = $3.logif;
|
|
if ($$.logif == 0)
|
|
$$.logif = $1.logif;
|
|
}
|
|
;
|
|
|
|
logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; }
|
|
| USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
|
|
| GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
|
|
| TO string {
|
|
const char *errstr;
|
|
u_int i;
|
|
|
|
$$.log = 0;
|
|
if (strncmp($2, "pflog", 5)) {
|
|
yyerror("%s: should be a pflog interface", $2);
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
i = strtonum($2 + 5, 0, 255, &errstr);
|
|
if (errstr) {
|
|
yyerror("%s: %s", $2, errstr);
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
free($2);
|
|
$$.logif = i;
|
|
}
|
|
;
|
|
|
|
interface : /* empty */ { $$ = NULL; }
|
|
| ON if_item_not { $$ = $2; }
|
|
| ON '{' optnl if_list '}' { $$ = $4; }
|
|
;
|
|
|
|
if_list : if_item_not optnl { $$ = $1; }
|
|
| if_list comma if_item_not optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
if_item_not : not if_item { $$ = $2; $$->not = $1; }
|
|
;
|
|
|
|
if_item : STRING {
|
|
struct node_host *n;
|
|
|
|
$$ = calloc(1, sizeof(struct node_if));
|
|
if ($$ == NULL)
|
|
err(1, "if_item: calloc");
|
|
if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
|
|
sizeof($$->ifname)) {
|
|
free($1);
|
|
free($$);
|
|
yyerror("interface name too long");
|
|
YYERROR;
|
|
}
|
|
|
|
if ((n = ifa_exists($1)) != NULL)
|
|
$$->ifa_flags = n->ifa_flags;
|
|
|
|
free($1);
|
|
$$->not = 0;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
af : /* empty */ { $$ = 0; }
|
|
| INET { $$ = AF_INET; }
|
|
| INET6 { $$ = AF_INET6; }
|
|
;
|
|
|
|
proto : /* empty */ { $$ = NULL; }
|
|
| PROTO proto_item { $$ = $2; }
|
|
| PROTO '{' optnl proto_list '}' { $$ = $4; }
|
|
;
|
|
|
|
proto_list : proto_item optnl { $$ = $1; }
|
|
| proto_list comma proto_item optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
proto_item : protoval {
|
|
u_int8_t pr;
|
|
|
|
pr = (u_int8_t)$1;
|
|
if (pr == 0) {
|
|
yyerror("proto 0 cannot be used");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_proto));
|
|
if ($$ == NULL)
|
|
err(1, "proto_item: calloc");
|
|
$$->proto = pr;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
protoval : STRING {
|
|
struct protoent *p;
|
|
|
|
p = getprotobyname($1);
|
|
if (p == NULL) {
|
|
yyerror("unknown protocol %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
$$ = p->p_proto;
|
|
free($1);
|
|
}
|
|
| NUMBER {
|
|
if ($1 < 0 || $1 > 255) {
|
|
yyerror("protocol outside range");
|
|
YYERROR;
|
|
}
|
|
}
|
|
;
|
|
|
|
fromto : ALL {
|
|
$$.src.host = NULL;
|
|
$$.src.port = NULL;
|
|
$$.dst.host = NULL;
|
|
$$.dst.port = NULL;
|
|
$$.src_os = NULL;
|
|
}
|
|
| from os to {
|
|
$$.src = $1;
|
|
$$.src_os = $2;
|
|
$$.dst = $3;
|
|
}
|
|
;
|
|
|
|
os : /* empty */ { $$ = NULL; }
|
|
| OS xos { $$ = $2; }
|
|
| OS '{' optnl os_list '}' { $$ = $4; }
|
|
;
|
|
|
|
xos : STRING {
|
|
$$ = calloc(1, sizeof(struct node_os));
|
|
if ($$ == NULL)
|
|
err(1, "os: calloc");
|
|
$$->os = $1;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
os_list : xos optnl { $$ = $1; }
|
|
| os_list comma xos optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
from : /* empty */ {
|
|
$$.host = NULL;
|
|
$$.port = NULL;
|
|
}
|
|
| FROM ipportspec {
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
to : /* empty */ {
|
|
$$.host = NULL;
|
|
$$.port = NULL;
|
|
}
|
|
| TO ipportspec {
|
|
if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
|
|
"not permitted in a destination address"))
|
|
YYERROR;
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
ipportspec : ipspec {
|
|
$$.host = $1;
|
|
$$.port = NULL;
|
|
}
|
|
| ipspec PORT portspec {
|
|
$$.host = $1;
|
|
$$.port = $3;
|
|
}
|
|
| PORT portspec {
|
|
$$.host = NULL;
|
|
$$.port = $2;
|
|
}
|
|
;
|
|
|
|
optnl : '\n' optnl
|
|
|
|
|
;
|
|
|
|
ipspec : ANY { $$ = NULL; }
|
|
| xhost { $$ = $1; }
|
|
| '{' optnl host_list '}' { $$ = $3; }
|
|
;
|
|
|
|
toipspec : TO ipspec { $$ = $2; }
|
|
| /* empty */ { $$ = NULL; }
|
|
;
|
|
|
|
host_list : ipspec optnl { $$ = $1; }
|
|
| host_list comma ipspec optnl {
|
|
if ($3 == NULL)
|
|
$$ = $1;
|
|
else if ($1 == NULL)
|
|
$$ = $3;
|
|
else {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3->tail;
|
|
$$ = $1;
|
|
}
|
|
}
|
|
;
|
|
|
|
xhost : not host {
|
|
struct node_host *n;
|
|
|
|
for (n = $2; n != NULL; n = n->next)
|
|
n->not = $1;
|
|
$$ = $2;
|
|
}
|
|
| not NOROUTE {
|
|
$$ = calloc(1, sizeof(struct node_host));
|
|
if ($$ == NULL)
|
|
err(1, "xhost: calloc");
|
|
$$->addr.type = PF_ADDR_NOROUTE;
|
|
$$->next = NULL;
|
|
$$->not = $1;
|
|
$$->tail = $$;
|
|
}
|
|
| not URPFFAILED {
|
|
$$ = calloc(1, sizeof(struct node_host));
|
|
if ($$ == NULL)
|
|
err(1, "xhost: calloc");
|
|
$$->addr.type = PF_ADDR_URPFFAILED;
|
|
$$->next = NULL;
|
|
$$->not = $1;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
host : STRING {
|
|
if (($$ = host($1)) == NULL) {
|
|
/* error. "any" is handled elsewhere */
|
|
free($1);
|
|
yyerror("could not parse host specification");
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
|
|
}
|
|
| STRING '-' STRING {
|
|
struct node_host *b, *e;
|
|
|
|
if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
|
|
free($1);
|
|
free($3);
|
|
yyerror("could not parse host specification");
|
|
YYERROR;
|
|
}
|
|
if (b->af != e->af ||
|
|
b->addr.type != PF_ADDR_ADDRMASK ||
|
|
e->addr.type != PF_ADDR_ADDRMASK ||
|
|
unmask(&b->addr.v.a.mask, b->af) !=
|
|
(b->af == AF_INET ? 32 : 128) ||
|
|
unmask(&e->addr.v.a.mask, e->af) !=
|
|
(e->af == AF_INET ? 32 : 128) ||
|
|
b->next != NULL || b->not ||
|
|
e->next != NULL || e->not) {
|
|
free(b);
|
|
free(e);
|
|
free($1);
|
|
free($3);
|
|
yyerror("invalid address range");
|
|
YYERROR;
|
|
}
|
|
memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
|
|
sizeof(b->addr.v.a.mask));
|
|
b->addr.type = PF_ADDR_RANGE;
|
|
$$ = b;
|
|
free(e);
|
|
free($1);
|
|
free($3);
|
|
}
|
|
| STRING '/' NUMBER {
|
|
char *buf;
|
|
|
|
if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
|
|
err(1, "host: asprintf");
|
|
free($1);
|
|
if (($$ = host(buf)) == NULL) {
|
|
/* error. "any" is handled elsewhere */
|
|
free(buf);
|
|
yyerror("could not parse host specification");
|
|
YYERROR;
|
|
}
|
|
free(buf);
|
|
}
|
|
| NUMBER '/' NUMBER {
|
|
char *buf;
|
|
|
|
/* ie. for 10/8 parsing */
|
|
#ifdef __FreeBSD__
|
|
if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
|
|
#else
|
|
if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
|
|
#endif
|
|
err(1, "host: asprintf");
|
|
if (($$ = host(buf)) == NULL) {
|
|
/* error. "any" is handled elsewhere */
|
|
free(buf);
|
|
yyerror("could not parse host specification");
|
|
YYERROR;
|
|
}
|
|
free(buf);
|
|
}
|
|
| dynaddr
|
|
| dynaddr '/' NUMBER {
|
|
struct node_host *n;
|
|
|
|
if ($3 < 0 || $3 > 128) {
|
|
yyerror("bit number too big");
|
|
YYERROR;
|
|
}
|
|
$$ = $1;
|
|
for (n = $1; n != NULL; n = n->next)
|
|
set_ipmask(n, $3);
|
|
}
|
|
| '<' STRING '>' {
|
|
if (strlen($2) >= PF_TABLE_NAME_SIZE) {
|
|
yyerror("table name '%s' too long", $2);
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_host));
|
|
if ($$ == NULL)
|
|
err(1, "host: calloc");
|
|
$$->addr.type = PF_ADDR_TABLE;
|
|
if (strlcpy($$->addr.v.tblname, $2,
|
|
sizeof($$->addr.v.tblname)) >=
|
|
sizeof($$->addr.v.tblname))
|
|
errx(1, "host: strlcpy");
|
|
free($2);
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
number : NUMBER
|
|
| STRING {
|
|
u_long ulval;
|
|
|
|
if (atoul($1, &ulval) == -1) {
|
|
yyerror("%s is not a number", $1);
|
|
free($1);
|
|
YYERROR;
|
|
} else
|
|
$$ = ulval;
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
dynaddr : '(' STRING ')' {
|
|
int flags = 0;
|
|
char *p, *op;
|
|
|
|
op = $2;
|
|
if (!isalpha(op[0])) {
|
|
yyerror("invalid interface name '%s'", op);
|
|
free(op);
|
|
YYERROR;
|
|
}
|
|
while ((p = strrchr($2, ':')) != NULL) {
|
|
if (!strcmp(p+1, "network"))
|
|
flags |= PFI_AFLAG_NETWORK;
|
|
else if (!strcmp(p+1, "broadcast"))
|
|
flags |= PFI_AFLAG_BROADCAST;
|
|
else if (!strcmp(p+1, "peer"))
|
|
flags |= PFI_AFLAG_PEER;
|
|
else if (!strcmp(p+1, "0"))
|
|
flags |= PFI_AFLAG_NOALIAS;
|
|
else {
|
|
yyerror("interface %s has bad modifier",
|
|
$2);
|
|
free(op);
|
|
YYERROR;
|
|
}
|
|
*p = '\0';
|
|
}
|
|
if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
|
|
free(op);
|
|
yyerror("illegal combination of "
|
|
"interface modifiers");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_host));
|
|
if ($$ == NULL)
|
|
err(1, "address: calloc");
|
|
$$->af = 0;
|
|
set_ipmask($$, 128);
|
|
$$->addr.type = PF_ADDR_DYNIFTL;
|
|
$$->addr.iflags = flags;
|
|
if (strlcpy($$->addr.v.ifname, $2,
|
|
sizeof($$->addr.v.ifname)) >=
|
|
sizeof($$->addr.v.ifname)) {
|
|
free(op);
|
|
free($$);
|
|
yyerror("interface name too long");
|
|
YYERROR;
|
|
}
|
|
free(op);
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
portspec : port_item { $$ = $1; }
|
|
| '{' optnl port_list '}' { $$ = $3; }
|
|
;
|
|
|
|
port_list : port_item optnl { $$ = $1; }
|
|
| port_list comma port_item optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
port_item : portrange {
|
|
$$ = calloc(1, sizeof(struct node_port));
|
|
if ($$ == NULL)
|
|
err(1, "port_item: calloc");
|
|
$$->port[0] = $1.a;
|
|
$$->port[1] = $1.b;
|
|
if ($1.t)
|
|
$$->op = PF_OP_RRG;
|
|
else
|
|
$$->op = PF_OP_EQ;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| unaryop portrange {
|
|
if ($2.t) {
|
|
yyerror("':' cannot be used with an other "
|
|
"port operator");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_port));
|
|
if ($$ == NULL)
|
|
err(1, "port_item: calloc");
|
|
$$->port[0] = $2.a;
|
|
$$->port[1] = $2.b;
|
|
$$->op = $1;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| portrange PORTBINARY portrange {
|
|
if ($1.t || $3.t) {
|
|
yyerror("':' cannot be used with an other "
|
|
"port operator");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_port));
|
|
if ($$ == NULL)
|
|
err(1, "port_item: calloc");
|
|
$$->port[0] = $1.a;
|
|
$$->port[1] = $3.a;
|
|
$$->op = $2;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
portplain : numberstring {
|
|
if (parseport($1, &$$, 0) == -1) {
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
portrange : numberstring {
|
|
if (parseport($1, &$$, PPORT_RANGE) == -1) {
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
uids : uid_item { $$ = $1; }
|
|
| '{' optnl uid_list '}' { $$ = $3; }
|
|
;
|
|
|
|
uid_list : uid_item optnl { $$ = $1; }
|
|
| uid_list comma uid_item optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
uid_item : uid {
|
|
$$ = calloc(1, sizeof(struct node_uid));
|
|
if ($$ == NULL)
|
|
err(1, "uid_item: calloc");
|
|
$$->uid[0] = $1;
|
|
$$->uid[1] = $1;
|
|
$$->op = PF_OP_EQ;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| unaryop uid {
|
|
if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
|
|
yyerror("user unknown requires operator = or "
|
|
"!=");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_uid));
|
|
if ($$ == NULL)
|
|
err(1, "uid_item: calloc");
|
|
$$->uid[0] = $2;
|
|
$$->uid[1] = $2;
|
|
$$->op = $1;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| uid PORTBINARY uid {
|
|
if ($1 == UID_MAX || $3 == UID_MAX) {
|
|
yyerror("user unknown requires operator = or "
|
|
"!=");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_uid));
|
|
if ($$ == NULL)
|
|
err(1, "uid_item: calloc");
|
|
$$->uid[0] = $1;
|
|
$$->uid[1] = $3;
|
|
$$->op = $2;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
uid : STRING {
|
|
if (!strcmp($1, "unknown"))
|
|
$$ = UID_MAX;
|
|
else {
|
|
struct passwd *pw;
|
|
|
|
if ((pw = getpwnam($1)) == NULL) {
|
|
yyerror("unknown user %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
$$ = pw->pw_uid;
|
|
}
|
|
free($1);
|
|
}
|
|
| NUMBER {
|
|
if ($1 < 0 || $1 >= UID_MAX) {
|
|
yyerror("illegal uid value %lu", $1);
|
|
YYERROR;
|
|
}
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
gids : gid_item { $$ = $1; }
|
|
| '{' optnl gid_list '}' { $$ = $3; }
|
|
;
|
|
|
|
gid_list : gid_item optnl { $$ = $1; }
|
|
| gid_list comma gid_item optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
gid_item : gid {
|
|
$$ = calloc(1, sizeof(struct node_gid));
|
|
if ($$ == NULL)
|
|
err(1, "gid_item: calloc");
|
|
$$->gid[0] = $1;
|
|
$$->gid[1] = $1;
|
|
$$->op = PF_OP_EQ;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| unaryop gid {
|
|
if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
|
|
yyerror("group unknown requires operator = or "
|
|
"!=");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_gid));
|
|
if ($$ == NULL)
|
|
err(1, "gid_item: calloc");
|
|
$$->gid[0] = $2;
|
|
$$->gid[1] = $2;
|
|
$$->op = $1;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| gid PORTBINARY gid {
|
|
if ($1 == GID_MAX || $3 == GID_MAX) {
|
|
yyerror("group unknown requires operator = or "
|
|
"!=");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_gid));
|
|
if ($$ == NULL)
|
|
err(1, "gid_item: calloc");
|
|
$$->gid[0] = $1;
|
|
$$->gid[1] = $3;
|
|
$$->op = $2;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
gid : STRING {
|
|
if (!strcmp($1, "unknown"))
|
|
$$ = GID_MAX;
|
|
else {
|
|
struct group *grp;
|
|
|
|
if ((grp = getgrnam($1)) == NULL) {
|
|
yyerror("unknown group %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
$$ = grp->gr_gid;
|
|
}
|
|
free($1);
|
|
}
|
|
| NUMBER {
|
|
if ($1 < 0 || $1 >= GID_MAX) {
|
|
yyerror("illegal gid value %lu", $1);
|
|
YYERROR;
|
|
}
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
flag : STRING {
|
|
int f;
|
|
|
|
if ((f = parse_flags($1)) < 0) {
|
|
yyerror("bad flags %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
$$.b1 = f;
|
|
}
|
|
;
|
|
|
|
flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; }
|
|
| FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; }
|
|
| FLAGS ANY { $$.b1 = 0; $$.b2 = 0; }
|
|
;
|
|
|
|
icmpspec : ICMPTYPE icmp_item { $$ = $2; }
|
|
| ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; }
|
|
| ICMP6TYPE icmp6_item { $$ = $2; }
|
|
| ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; }
|
|
;
|
|
|
|
icmp_list : icmp_item optnl { $$ = $1; }
|
|
| icmp_list comma icmp_item optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
icmp6_list : icmp6_item optnl { $$ = $1; }
|
|
| icmp6_list comma icmp6_item optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
icmp_item : icmptype {
|
|
$$ = calloc(1, sizeof(struct node_icmp));
|
|
if ($$ == NULL)
|
|
err(1, "icmp_item: calloc");
|
|
$$->type = $1;
|
|
$$->code = 0;
|
|
$$->proto = IPPROTO_ICMP;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| icmptype CODE STRING {
|
|
const struct icmpcodeent *p;
|
|
|
|
if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
|
|
yyerror("unknown icmp-code %s", $3);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
|
|
free($3);
|
|
$$ = calloc(1, sizeof(struct node_icmp));
|
|
if ($$ == NULL)
|
|
err(1, "icmp_item: calloc");
|
|
$$->type = $1;
|
|
$$->code = p->code + 1;
|
|
$$->proto = IPPROTO_ICMP;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| icmptype CODE NUMBER {
|
|
if ($3 < 0 || $3 > 255) {
|
|
yyerror("illegal icmp-code %lu", $3);
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_icmp));
|
|
if ($$ == NULL)
|
|
err(1, "icmp_item: calloc");
|
|
$$->type = $1;
|
|
$$->code = $3 + 1;
|
|
$$->proto = IPPROTO_ICMP;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
icmp6_item : icmp6type {
|
|
$$ = calloc(1, sizeof(struct node_icmp));
|
|
if ($$ == NULL)
|
|
err(1, "icmp_item: calloc");
|
|
$$->type = $1;
|
|
$$->code = 0;
|
|
$$->proto = IPPROTO_ICMPV6;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| icmp6type CODE STRING {
|
|
const struct icmpcodeent *p;
|
|
|
|
if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
|
|
yyerror("unknown icmp6-code %s", $3);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
free($3);
|
|
|
|
$$ = calloc(1, sizeof(struct node_icmp));
|
|
if ($$ == NULL)
|
|
err(1, "icmp_item: calloc");
|
|
$$->type = $1;
|
|
$$->code = p->code + 1;
|
|
$$->proto = IPPROTO_ICMPV6;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| icmp6type CODE NUMBER {
|
|
if ($3 < 0 || $3 > 255) {
|
|
yyerror("illegal icmp-code %lu", $3);
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_icmp));
|
|
if ($$ == NULL)
|
|
err(1, "icmp_item: calloc");
|
|
$$->type = $1;
|
|
$$->code = $3 + 1;
|
|
$$->proto = IPPROTO_ICMPV6;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
icmptype : STRING {
|
|
const struct icmptypeent *p;
|
|
|
|
if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
|
|
yyerror("unknown icmp-type %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
$$ = p->type + 1;
|
|
free($1);
|
|
}
|
|
| NUMBER {
|
|
if ($1 < 0 || $1 > 255) {
|
|
yyerror("illegal icmp-type %lu", $1);
|
|
YYERROR;
|
|
}
|
|
$$ = $1 + 1;
|
|
}
|
|
;
|
|
|
|
icmp6type : STRING {
|
|
const struct icmptypeent *p;
|
|
|
|
if ((p = geticmptypebyname($1, AF_INET6)) ==
|
|
NULL) {
|
|
yyerror("unknown icmp6-type %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
$$ = p->type + 1;
|
|
free($1);
|
|
}
|
|
| NUMBER {
|
|
if ($1 < 0 || $1 > 255) {
|
|
yyerror("illegal icmp6-type %lu", $1);
|
|
YYERROR;
|
|
}
|
|
$$ = $1 + 1;
|
|
}
|
|
;
|
|
|
|
tos : STRING {
|
|
int val;
|
|
char *end;
|
|
|
|
if (map_tos($1, &val))
|
|
$$ = val;
|
|
else if ($1[0] == '0' && $1[1] == 'x') {
|
|
errno = 0;
|
|
$$ = strtoul($1, &end, 16);
|
|
if (errno || *end != '\0')
|
|
$$ = 256;
|
|
} else
|
|
$$ = 256; /* flag bad argument */
|
|
if ($$ < 0 || $$ > 255) {
|
|
yyerror("illegal tos value %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
| NUMBER {
|
|
$$ = $1;
|
|
if ($$ < 0 || $$ > 255) {
|
|
yyerror("illegal tos value %s", $1);
|
|
YYERROR;
|
|
}
|
|
}
|
|
;
|
|
|
|
sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; }
|
|
| SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; }
|
|
| SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; }
|
|
;
|
|
|
|
statelock : IFBOUND {
|
|
$$ = PFRULE_IFBOUND;
|
|
}
|
|
| FLOATING {
|
|
$$ = 0;
|
|
}
|
|
;
|
|
|
|
keep : NO STATE {
|
|
$$.action = 0;
|
|
$$.options = NULL;
|
|
}
|
|
| KEEP STATE state_opt_spec {
|
|
$$.action = PF_STATE_NORMAL;
|
|
$$.options = $3;
|
|
}
|
|
| MODULATE STATE state_opt_spec {
|
|
$$.action = PF_STATE_MODULATE;
|
|
$$.options = $3;
|
|
}
|
|
| SYNPROXY STATE state_opt_spec {
|
|
$$.action = PF_STATE_SYNPROXY;
|
|
$$.options = $3;
|
|
}
|
|
;
|
|
|
|
flush : /* empty */ { $$ = 0; }
|
|
| FLUSH { $$ = PF_FLUSH; }
|
|
| FLUSH GLOBAL {
|
|
$$ = PF_FLUSH | PF_FLUSH_GLOBAL;
|
|
}
|
|
;
|
|
|
|
state_opt_spec : '(' state_opt_list ')' { $$ = $2; }
|
|
| /* empty */ { $$ = NULL; }
|
|
;
|
|
|
|
state_opt_list : state_opt_item { $$ = $1; }
|
|
| state_opt_list comma state_opt_item {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
state_opt_item : MAXIMUM NUMBER {
|
|
if ($2 < 0 || $2 > UINT_MAX) {
|
|
yyerror("only positive values permitted");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_MAX;
|
|
$$->data.max_states = $2;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| NOSYNC {
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_NOSYNC;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| MAXSRCSTATES NUMBER {
|
|
if ($2 < 0 || $2 > UINT_MAX) {
|
|
yyerror("only positive values permitted");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_MAX_SRC_STATES;
|
|
$$->data.max_src_states = $2;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| MAXSRCCONN NUMBER {
|
|
if ($2 < 0 || $2 > UINT_MAX) {
|
|
yyerror("only positive values permitted");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_MAX_SRC_CONN;
|
|
$$->data.max_src_conn = $2;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| MAXSRCCONNRATE NUMBER '/' NUMBER {
|
|
if ($2 < 0 || $2 > UINT_MAX ||
|
|
$4 < 0 || $4 > UINT_MAX) {
|
|
yyerror("only positive values permitted");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
|
|
$$->data.max_src_conn_rate.limit = $2;
|
|
$$->data.max_src_conn_rate.seconds = $4;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| OVERLOAD '<' STRING '>' flush {
|
|
if (strlen($3) >= PF_TABLE_NAME_SIZE) {
|
|
yyerror("table name '%s' too long", $3);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
if (strlcpy($$->data.overload.tblname, $3,
|
|
PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
|
|
errx(1, "state_opt_item: strlcpy");
|
|
free($3);
|
|
$$->type = PF_STATE_OPT_OVERLOAD;
|
|
$$->data.overload.flush = $5;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| MAXSRCNODES NUMBER {
|
|
if ($2 < 0 || $2 > UINT_MAX) {
|
|
yyerror("only positive values permitted");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_MAX_SRC_NODES;
|
|
$$->data.max_src_nodes = $2;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| sourcetrack {
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_SRCTRACK;
|
|
$$->data.src_track = $1;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| statelock {
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_STATELOCK;
|
|
$$->data.statelock = $1;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| SLOPPY {
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_SLOPPY;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| STRING NUMBER {
|
|
int i;
|
|
|
|
if ($2 < 0 || $2 > UINT_MAX) {
|
|
yyerror("only positive values permitted");
|
|
YYERROR;
|
|
}
|
|
for (i = 0; pf_timeouts[i].name &&
|
|
strcmp(pf_timeouts[i].name, $1); ++i)
|
|
; /* nothing */
|
|
if (!pf_timeouts[i].name) {
|
|
yyerror("illegal timeout name %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
if (strchr(pf_timeouts[i].name, '.') == NULL) {
|
|
yyerror("illegal state timeout %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
$$ = calloc(1, sizeof(struct node_state_opt));
|
|
if ($$ == NULL)
|
|
err(1, "state_opt_item: calloc");
|
|
$$->type = PF_STATE_OPT_TIMEOUT;
|
|
$$->data.timeout.number = pf_timeouts[i].timeout;
|
|
$$->data.timeout.seconds = $2;
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
;
|
|
|
|
label : LABEL STRING {
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
qname : QUEUE STRING {
|
|
$$.qname = $2;
|
|
$$.pqname = NULL;
|
|
}
|
|
| QUEUE '(' STRING ')' {
|
|
$$.qname = $3;
|
|
$$.pqname = NULL;
|
|
}
|
|
| QUEUE '(' STRING comma STRING ')' {
|
|
$$.qname = $3;
|
|
$$.pqname = $5;
|
|
}
|
|
;
|
|
|
|
no : /* empty */ { $$ = 0; }
|
|
| NO { $$ = 1; }
|
|
;
|
|
|
|
portstar : numberstring {
|
|
if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
redirspec : host { $$ = $1; }
|
|
| '{' optnl redir_host_list '}' { $$ = $3; }
|
|
;
|
|
|
|
redir_host_list : host optnl { $$ = $1; }
|
|
| redir_host_list comma host optnl {
|
|
$1->tail->next = $3;
|
|
$1->tail = $3->tail;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
redirpool : /* empty */ { $$ = NULL; }
|
|
| ARROW redirspec {
|
|
$$ = calloc(1, sizeof(struct redirection));
|
|
if ($$ == NULL)
|
|
err(1, "redirection: calloc");
|
|
$$->host = $2;
|
|
$$->rport.a = $$->rport.b = $$->rport.t = 0;
|
|
}
|
|
| ARROW redirspec PORT portstar {
|
|
$$ = calloc(1, sizeof(struct redirection));
|
|
if ($$ == NULL)
|
|
err(1, "redirection: calloc");
|
|
$$->host = $2;
|
|
$$->rport = $4;
|
|
}
|
|
;
|
|
|
|
hashkey : /* empty */
|
|
{
|
|
$$ = calloc(1, sizeof(struct pf_poolhashkey));
|
|
if ($$ == NULL)
|
|
err(1, "hashkey: calloc");
|
|
$$->key32[0] = arc4random();
|
|
$$->key32[1] = arc4random();
|
|
$$->key32[2] = arc4random();
|
|
$$->key32[3] = arc4random();
|
|
}
|
|
| string
|
|
{
|
|
if (!strncmp($1, "0x", 2)) {
|
|
if (strlen($1) != 34) {
|
|
free($1);
|
|
yyerror("hex key must be 128 bits "
|
|
"(32 hex digits) long");
|
|
YYERROR;
|
|
}
|
|
$$ = calloc(1, sizeof(struct pf_poolhashkey));
|
|
if ($$ == NULL)
|
|
err(1, "hashkey: calloc");
|
|
|
|
if (sscanf($1, "0x%8x%8x%8x%8x",
|
|
&$$->key32[0], &$$->key32[1],
|
|
&$$->key32[2], &$$->key32[3]) != 4) {
|
|
free($$);
|
|
free($1);
|
|
yyerror("invalid hex key");
|
|
YYERROR;
|
|
}
|
|
} else {
|
|
MD5_CTX context;
|
|
|
|
$$ = calloc(1, sizeof(struct pf_poolhashkey));
|
|
if ($$ == NULL)
|
|
err(1, "hashkey: calloc");
|
|
MD5Init(&context);
|
|
MD5Update(&context, (unsigned char *)$1,
|
|
strlen($1));
|
|
MD5Final((unsigned char *)$$, &context);
|
|
HTONL($$->key32[0]);
|
|
HTONL($$->key32[1]);
|
|
HTONL($$->key32[2]);
|
|
HTONL($$->key32[3]);
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
pool_opts : { bzero(&pool_opts, sizeof pool_opts); }
|
|
pool_opts_l
|
|
{ $$ = pool_opts; }
|
|
| /* empty */ {
|
|
bzero(&pool_opts, sizeof pool_opts);
|
|
$$ = pool_opts;
|
|
}
|
|
;
|
|
|
|
pool_opts_l : pool_opts_l pool_opt
|
|
| pool_opt
|
|
;
|
|
|
|
pool_opt : BITMASK {
|
|
if (pool_opts.type) {
|
|
yyerror("pool type cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
pool_opts.type = PF_POOL_BITMASK;
|
|
}
|
|
| RANDOM {
|
|
if (pool_opts.type) {
|
|
yyerror("pool type cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
pool_opts.type = PF_POOL_RANDOM;
|
|
}
|
|
| SOURCEHASH hashkey {
|
|
if (pool_opts.type) {
|
|
yyerror("pool type cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
pool_opts.type = PF_POOL_SRCHASH;
|
|
pool_opts.key = $2;
|
|
}
|
|
| ROUNDROBIN {
|
|
if (pool_opts.type) {
|
|
yyerror("pool type cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
pool_opts.type = PF_POOL_ROUNDROBIN;
|
|
}
|
|
| STATICPORT {
|
|
if (pool_opts.staticport) {
|
|
yyerror("static-port cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
pool_opts.staticport = 1;
|
|
}
|
|
| STICKYADDRESS {
|
|
if (filter_opts.marker & POM_STICKYADDRESS) {
|
|
yyerror("sticky-address cannot be redefined");
|
|
YYERROR;
|
|
}
|
|
pool_opts.marker |= POM_STICKYADDRESS;
|
|
pool_opts.opts |= PF_POOL_STICKYADDR;
|
|
}
|
|
;
|
|
|
|
redirection : /* empty */ { $$ = NULL; }
|
|
| ARROW host {
|
|
$$ = calloc(1, sizeof(struct redirection));
|
|
if ($$ == NULL)
|
|
err(1, "redirection: calloc");
|
|
$$->host = $2;
|
|
$$->rport.a = $$->rport.b = $$->rport.t = 0;
|
|
}
|
|
| ARROW host PORT portstar {
|
|
$$ = calloc(1, sizeof(struct redirection));
|
|
if ($$ == NULL)
|
|
err(1, "redirection: calloc");
|
|
$$->host = $2;
|
|
$$->rport = $4;
|
|
}
|
|
;
|
|
|
|
natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; }
|
|
| PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
|
|
| PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
|
|
| log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
|
|
;
|
|
|
|
nataction : no NAT natpasslog {
|
|
if ($1 && $3.b1) {
|
|
yyerror("\"pass\" not valid with \"no\"");
|
|
YYERROR;
|
|
}
|
|
if ($1)
|
|
$$.b1 = PF_NONAT;
|
|
else
|
|
$$.b1 = PF_NAT;
|
|
$$.b2 = $3.b1;
|
|
$$.w = $3.b2;
|
|
$$.w2 = $3.w2;
|
|
}
|
|
| no RDR natpasslog {
|
|
if ($1 && $3.b1) {
|
|
yyerror("\"pass\" not valid with \"no\"");
|
|
YYERROR;
|
|
}
|
|
if ($1)
|
|
$$.b1 = PF_NORDR;
|
|
else
|
|
$$.b1 = PF_RDR;
|
|
$$.b2 = $3.b1;
|
|
$$.w = $3.b2;
|
|
$$.w2 = $3.w2;
|
|
}
|
|
;
|
|
|
|
natrule : nataction interface af proto fromto tag tagged rtable
|
|
redirpool pool_opts
|
|
{
|
|
struct pf_rule r;
|
|
|
|
if (check_rulestate(PFCTL_STATE_NAT))
|
|
YYERROR;
|
|
|
|
memset(&r, 0, sizeof(r));
|
|
|
|
r.action = $1.b1;
|
|
r.natpass = $1.b2;
|
|
r.log = $1.w;
|
|
r.logif = $1.w2;
|
|
r.af = $3;
|
|
|
|
if (!r.af) {
|
|
if ($5.src.host && $5.src.host->af &&
|
|
!$5.src.host->ifindex)
|
|
r.af = $5.src.host->af;
|
|
else if ($5.dst.host && $5.dst.host->af &&
|
|
!$5.dst.host->ifindex)
|
|
r.af = $5.dst.host->af;
|
|
}
|
|
|
|
if ($6 != NULL)
|
|
if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
|
|
PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
|
|
if ($7.name)
|
|
if (strlcpy(r.match_tagname, $7.name,
|
|
PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
r.match_tag_not = $7.neg;
|
|
r.rtableid = $8;
|
|
|
|
if (r.action == PF_NONAT || r.action == PF_NORDR) {
|
|
if ($9 != NULL) {
|
|
yyerror("translation rule with 'no' "
|
|
"does not need '->'");
|
|
YYERROR;
|
|
}
|
|
} else {
|
|
if ($9 == NULL || $9->host == NULL) {
|
|
yyerror("translation rule requires '-> "
|
|
"address'");
|
|
YYERROR;
|
|
}
|
|
if (!r.af && ! $9->host->ifindex)
|
|
r.af = $9->host->af;
|
|
|
|
remove_invalid_hosts(&$9->host, &r.af);
|
|
if (invalid_redirect($9->host, r.af))
|
|
YYERROR;
|
|
if (check_netmask($9->host, r.af))
|
|
YYERROR;
|
|
|
|
r.rpool.proxy_port[0] = ntohs($9->rport.a);
|
|
|
|
switch (r.action) {
|
|
case PF_RDR:
|
|
if (!$9->rport.b && $9->rport.t &&
|
|
$5.dst.port != NULL) {
|
|
r.rpool.proxy_port[1] =
|
|
ntohs($9->rport.a) +
|
|
(ntohs(
|
|
$5.dst.port->port[1]) -
|
|
ntohs(
|
|
$5.dst.port->port[0]));
|
|
} else
|
|
r.rpool.proxy_port[1] =
|
|
ntohs($9->rport.b);
|
|
break;
|
|
case PF_NAT:
|
|
r.rpool.proxy_port[1] =
|
|
ntohs($9->rport.b);
|
|
if (!r.rpool.proxy_port[0] &&
|
|
!r.rpool.proxy_port[1]) {
|
|
r.rpool.proxy_port[0] =
|
|
PF_NAT_PROXY_PORT_LOW;
|
|
r.rpool.proxy_port[1] =
|
|
PF_NAT_PROXY_PORT_HIGH;
|
|
} else if (!r.rpool.proxy_port[1])
|
|
r.rpool.proxy_port[1] =
|
|
r.rpool.proxy_port[0];
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
r.rpool.opts = $10.type;
|
|
if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
|
|
PF_POOL_NONE && ($9->host->next != NULL ||
|
|
$9->host->addr.type == PF_ADDR_TABLE ||
|
|
DYNIF_MULTIADDR($9->host->addr)))
|
|
r.rpool.opts = PF_POOL_ROUNDROBIN;
|
|
if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
|
|
PF_POOL_ROUNDROBIN &&
|
|
disallow_table($9->host, "tables are only "
|
|
"supported in round-robin redirection "
|
|
"pools"))
|
|
YYERROR;
|
|
if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
|
|
PF_POOL_ROUNDROBIN &&
|
|
disallow_alias($9->host, "interface (%s) "
|
|
"is only supported in round-robin "
|
|
"redirection pools"))
|
|
YYERROR;
|
|
if ($9->host->next != NULL) {
|
|
if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
|
|
PF_POOL_ROUNDROBIN) {
|
|
yyerror("only round-robin "
|
|
"valid for multiple "
|
|
"redirection addresses");
|
|
YYERROR;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($10.key != NULL)
|
|
memcpy(&r.rpool.key, $10.key,
|
|
sizeof(struct pf_poolhashkey));
|
|
|
|
if ($10.opts)
|
|
r.rpool.opts |= $10.opts;
|
|
|
|
if ($10.staticport) {
|
|
if (r.action != PF_NAT) {
|
|
yyerror("the 'static-port' option is "
|
|
"only valid with nat rules");
|
|
YYERROR;
|
|
}
|
|
if (r.rpool.proxy_port[0] !=
|
|
PF_NAT_PROXY_PORT_LOW &&
|
|
r.rpool.proxy_port[1] !=
|
|
PF_NAT_PROXY_PORT_HIGH) {
|
|
yyerror("the 'static-port' option can't"
|
|
" be used when specifying a port"
|
|
" range");
|
|
YYERROR;
|
|
}
|
|
r.rpool.proxy_port[0] = 0;
|
|
r.rpool.proxy_port[1] = 0;
|
|
}
|
|
|
|
expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
|
|
$5.src_os, $5.src.host, $5.src.port, $5.dst.host,
|
|
$5.dst.port, 0, 0, 0, "");
|
|
free($9);
|
|
}
|
|
;
|
|
|
|
binatrule : no BINAT natpasslog interface af proto FROM ipspec toipspec tag
|
|
tagged rtable redirection
|
|
{
|
|
struct pf_rule binat;
|
|
struct pf_pooladdr *pa;
|
|
|
|
if (check_rulestate(PFCTL_STATE_NAT))
|
|
YYERROR;
|
|
if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
|
|
"permitted as a binat destination"))
|
|
YYERROR;
|
|
|
|
memset(&binat, 0, sizeof(binat));
|
|
|
|
if ($1 && $3.b1) {
|
|
yyerror("\"pass\" not valid with \"no\"");
|
|
YYERROR;
|
|
}
|
|
if ($1)
|
|
binat.action = PF_NOBINAT;
|
|
else
|
|
binat.action = PF_BINAT;
|
|
binat.natpass = $3.b1;
|
|
binat.log = $3.b2;
|
|
binat.logif = $3.w2;
|
|
binat.af = $5;
|
|
if (!binat.af && $8 != NULL && $8->af)
|
|
binat.af = $8->af;
|
|
if (!binat.af && $9 != NULL && $9->af)
|
|
binat.af = $9->af;
|
|
|
|
if (!binat.af && $13 != NULL && $13->host)
|
|
binat.af = $13->host->af;
|
|
if (!binat.af) {
|
|
yyerror("address family (inet/inet6) "
|
|
"undefined");
|
|
YYERROR;
|
|
}
|
|
|
|
if ($4 != NULL) {
|
|
memcpy(binat.ifname, $4->ifname,
|
|
sizeof(binat.ifname));
|
|
binat.ifnot = $4->not;
|
|
free($4);
|
|
}
|
|
|
|
if ($10 != NULL)
|
|
if (strlcpy(binat.tagname, $10,
|
|
PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
if ($11.name)
|
|
if (strlcpy(binat.match_tagname, $11.name,
|
|
PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
|
|
yyerror("tag too long, max %u chars",
|
|
PF_TAG_NAME_SIZE - 1);
|
|
YYERROR;
|
|
}
|
|
binat.match_tag_not = $11.neg;
|
|
binat.rtableid = $12;
|
|
|
|
if ($6 != NULL) {
|
|
binat.proto = $6->proto;
|
|
free($6);
|
|
}
|
|
|
|
if ($8 != NULL && disallow_table($8, "invalid use of "
|
|
"table <%s> as the source address of a binat rule"))
|
|
YYERROR;
|
|
if ($8 != NULL && disallow_alias($8, "invalid use of "
|
|
"interface (%s) as the source address of a binat "
|
|
"rule"))
|
|
YYERROR;
|
|
if ($13 != NULL && $13->host != NULL && disallow_table(
|
|
$13->host, "invalid use of table <%s> as the "
|
|
"redirect address of a binat rule"))
|
|
YYERROR;
|
|
if ($13 != NULL && $13->host != NULL && disallow_alias(
|
|
$13->host, "invalid use of interface (%s) as the "
|
|
"redirect address of a binat rule"))
|
|
YYERROR;
|
|
|
|
if ($8 != NULL) {
|
|
if ($8->next) {
|
|
yyerror("multiple binat ip addresses");
|
|
YYERROR;
|
|
}
|
|
if ($8->addr.type == PF_ADDR_DYNIFTL)
|
|
$8->af = binat.af;
|
|
if ($8->af != binat.af) {
|
|
yyerror("binat ip versions must match");
|
|
YYERROR;
|
|
}
|
|
if (check_netmask($8, binat.af))
|
|
YYERROR;
|
|
memcpy(&binat.src.addr, &$8->addr,
|
|
sizeof(binat.src.addr));
|
|
free($8);
|
|
}
|
|
if ($9 != NULL) {
|
|
if ($9->next) {
|
|
yyerror("multiple binat ip addresses");
|
|
YYERROR;
|
|
}
|
|
if ($9->af != binat.af && $9->af) {
|
|
yyerror("binat ip versions must match");
|
|
YYERROR;
|
|
}
|
|
if (check_netmask($9, binat.af))
|
|
YYERROR;
|
|
memcpy(&binat.dst.addr, &$9->addr,
|
|
sizeof(binat.dst.addr));
|
|
binat.dst.neg = $9->not;
|
|
free($9);
|
|
}
|
|
|
|
if (binat.action == PF_NOBINAT) {
|
|
if ($13 != NULL) {
|
|
yyerror("'no binat' rule does not need"
|
|
" '->'");
|
|
YYERROR;
|
|
}
|
|
} else {
|
|
if ($13 == NULL || $13->host == NULL) {
|
|
yyerror("'binat' rule requires"
|
|
" '-> address'");
|
|
YYERROR;
|
|
}
|
|
|
|
remove_invalid_hosts(&$13->host, &binat.af);
|
|
if (invalid_redirect($13->host, binat.af))
|
|
YYERROR;
|
|
if ($13->host->next != NULL) {
|
|
yyerror("binat rule must redirect to "
|
|
"a single address");
|
|
YYERROR;
|
|
}
|
|
if (check_netmask($13->host, binat.af))
|
|
YYERROR;
|
|
|
|
if (!PF_AZERO(&binat.src.addr.v.a.mask,
|
|
binat.af) &&
|
|
!PF_AEQ(&binat.src.addr.v.a.mask,
|
|
&$13->host->addr.v.a.mask, binat.af)) {
|
|
yyerror("'binat' source mask and "
|
|
"redirect mask must be the same");
|
|
YYERROR;
|
|
}
|
|
|
|
TAILQ_INIT(&binat.rpool.list);
|
|
pa = calloc(1, sizeof(struct pf_pooladdr));
|
|
if (pa == NULL)
|
|
err(1, "binat: calloc");
|
|
pa->addr = $13->host->addr;
|
|
pa->ifname[0] = 0;
|
|
TAILQ_INSERT_TAIL(&binat.rpool.list,
|
|
pa, entries);
|
|
|
|
free($13);
|
|
}
|
|
|
|
pfctl_add_rule(pf, &binat, "");
|
|
}
|
|
;
|
|
|
|
tag : /* empty */ { $$ = NULL; }
|
|
| TAG STRING { $$ = $2; }
|
|
;
|
|
|
|
tagged : /* empty */ { $$.neg = 0; $$.name = NULL; }
|
|
| not TAGGED string { $$.neg = $1; $$.name = $3; }
|
|
;
|
|
|
|
rtable : /* empty */ { $$ = -1; }
|
|
| RTABLE NUMBER {
|
|
if ($2 < 0 || $2 > rt_tableid_max()) {
|
|
yyerror("invalid rtable id");
|
|
YYERROR;
|
|
}
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
route_host : STRING {
|
|
$$ = calloc(1, sizeof(struct node_host));
|
|
if ($$ == NULL)
|
|
err(1, "route_host: calloc");
|
|
$$->ifname = strdup($1);
|
|
set_ipmask($$, 128);
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| '(' STRING host ')' {
|
|
struct node_host *n;
|
|
|
|
$$ = $3;
|
|
for (n = $3; n != NULL; n = n->next)
|
|
n->ifname = strdup($2);
|
|
}
|
|
;
|
|
|
|
route_host_list : route_host optnl { $$ = $1; }
|
|
| route_host_list comma route_host optnl {
|
|
if ($1->af == 0)
|
|
$1->af = $3->af;
|
|
if ($1->af != $3->af) {
|
|
yyerror("all pool addresses must be in the "
|
|
"same address family");
|
|
YYERROR;
|
|
}
|
|
$1->tail->next = $3;
|
|
$1->tail = $3->tail;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
routespec : route_host { $$ = $1; }
|
|
| '{' optnl route_host_list '}' { $$ = $3; }
|
|
;
|
|
|
|
route : /* empty */ {
|
|
$$.host = NULL;
|
|
$$.rt = 0;
|
|
$$.pool_opts = 0;
|
|
}
|
|
| FASTROUTE {
|
|
/* backwards-compat */
|
|
$$.host = NULL;
|
|
$$.rt = 0;
|
|
$$.pool_opts = 0;
|
|
}
|
|
| ROUTETO routespec pool_opts {
|
|
$$.host = $2;
|
|
$$.rt = PF_ROUTETO;
|
|
$$.pool_opts = $3.type | $3.opts;
|
|
if ($3.key != NULL)
|
|
$$.key = $3.key;
|
|
}
|
|
| REPLYTO routespec pool_opts {
|
|
$$.host = $2;
|
|
$$.rt = PF_REPLYTO;
|
|
$$.pool_opts = $3.type | $3.opts;
|
|
if ($3.key != NULL)
|
|
$$.key = $3.key;
|
|
}
|
|
| DUPTO routespec pool_opts {
|
|
$$.host = $2;
|
|
$$.rt = PF_DUPTO;
|
|
$$.pool_opts = $3.type | $3.opts;
|
|
if ($3.key != NULL)
|
|
$$.key = $3.key;
|
|
}
|
|
;
|
|
|
|
timeout_spec : STRING NUMBER
|
|
{
|
|
if (check_rulestate(PFCTL_STATE_OPTION)) {
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > UINT_MAX) {
|
|
yyerror("only positive values permitted");
|
|
YYERROR;
|
|
}
|
|
if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
|
|
yyerror("unknown timeout %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
| INTERVAL NUMBER {
|
|
if (check_rulestate(PFCTL_STATE_OPTION))
|
|
YYERROR;
|
|
if ($2 < 0 || $2 > UINT_MAX) {
|
|
yyerror("only positive values permitted");
|
|
YYERROR;
|
|
}
|
|
if (pfctl_set_timeout(pf, "interval", $2, 0) != 0)
|
|
YYERROR;
|
|
}
|
|
;
|
|
|
|
timeout_list : timeout_list comma timeout_spec optnl
|
|
| timeout_spec optnl
|
|
;
|
|
|
|
limit_spec : STRING NUMBER
|
|
{
|
|
if (check_rulestate(PFCTL_STATE_OPTION)) {
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > UINT_MAX) {
|
|
yyerror("only positive values permitted");
|
|
YYERROR;
|
|
}
|
|
if (pfctl_set_limit(pf, $1, $2) != 0) {
|
|
yyerror("unable to set limit %s %u", $1, $2);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
limit_list : limit_list comma limit_spec optnl
|
|
| limit_spec optnl
|
|
;
|
|
|
|
comma : ','
|
|
| /* empty */
|
|
;
|
|
|
|
yesno : NO { $$ = 0; }
|
|
| STRING {
|
|
if (!strcmp($1, "yes"))
|
|
$$ = 1;
|
|
else {
|
|
yyerror("invalid value '%s', expected 'yes' "
|
|
"or 'no'", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
unaryop : '=' { $$ = PF_OP_EQ; }
|
|
| '!' '=' { $$ = PF_OP_NE; }
|
|
| '<' '=' { $$ = PF_OP_LE; }
|
|
| '<' { $$ = PF_OP_LT; }
|
|
| '>' '=' { $$ = PF_OP_GE; }
|
|
| '>' { $$ = PF_OP_GT; }
|
|
;
|
|
|
|
%%
|
|
|
|
int
|
|
yyerror(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
file->errors++;
|
|
va_start(ap, fmt);
|
|
fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
|
|
vfprintf(stderr, fmt, ap);
|
|
fprintf(stderr, "\n");
|
|
va_end(ap);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
disallow_table(struct node_host *h, const char *fmt)
|
|
{
|
|
for (; h != NULL; h = h->next)
|
|
if (h->addr.type == PF_ADDR_TABLE) {
|
|
yyerror(fmt, h->addr.v.tblname);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
disallow_urpf_failed(struct node_host *h, const char *fmt)
|
|
{
|
|
for (; h != NULL; h = h->next)
|
|
if (h->addr.type == PF_ADDR_URPFFAILED) {
|
|
yyerror(fmt);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
disallow_alias(struct node_host *h, const char *fmt)
|
|
{
|
|
for (; h != NULL; h = h->next)
|
|
if (DYNIF_MULTIADDR(h->addr)) {
|
|
yyerror(fmt, h->addr.v.tblname);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
rule_consistent(struct pf_rule *r, int anchor_call)
|
|
{
|
|
int problems = 0;
|
|
|
|
switch (r->action) {
|
|
case PF_PASS:
|
|
case PF_DROP:
|
|
case PF_SCRUB:
|
|
case PF_NOSCRUB:
|
|
problems = filter_consistent(r, anchor_call);
|
|
break;
|
|
case PF_NAT:
|
|
case PF_NONAT:
|
|
problems = nat_consistent(r);
|
|
break;
|
|
case PF_RDR:
|
|
case PF_NORDR:
|
|
problems = rdr_consistent(r);
|
|
break;
|
|
case PF_BINAT:
|
|
case PF_NOBINAT:
|
|
default:
|
|
break;
|
|
}
|
|
return (problems);
|
|
}
|
|
|
|
int
|
|
filter_consistent(struct pf_rule *r, int anchor_call)
|
|
{
|
|
int problems = 0;
|
|
|
|
if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
|
|
(r->src.port_op || r->dst.port_op)) {
|
|
yyerror("port only applies to tcp/udp");
|
|
problems++;
|
|
}
|
|
if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
|
|
(r->type || r->code)) {
|
|
yyerror("icmp-type/code only applies to icmp");
|
|
problems++;
|
|
}
|
|
if (!r->af && (r->type || r->code)) {
|
|
yyerror("must indicate address family with icmp-type/code");
|
|
problems++;
|
|
}
|
|
if (r->overload_tblname[0] &&
|
|
r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
|
|
yyerror("'overload' requires 'max-src-conn' "
|
|
"or 'max-src-conn-rate'");
|
|
problems++;
|
|
}
|
|
if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
|
|
(r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
|
|
yyerror("proto %s doesn't match address family %s",
|
|
r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
|
|
r->af == AF_INET ? "inet" : "inet6");
|
|
problems++;
|
|
}
|
|
if (r->allow_opts && r->action != PF_PASS) {
|
|
yyerror("allow-opts can only be specified for pass rules");
|
|
problems++;
|
|
}
|
|
if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
|
|
r->dst.port_op || r->flagset || r->type || r->code)) {
|
|
yyerror("fragments can be filtered only on IP header fields");
|
|
problems++;
|
|
}
|
|
if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
|
|
yyerror("return-rst can only be applied to TCP rules");
|
|
problems++;
|
|
}
|
|
if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
|
|
yyerror("max-src-nodes requires 'source-track rule'");
|
|
problems++;
|
|
}
|
|
if (r->action == PF_DROP && r->keep_state) {
|
|
yyerror("keep state on block rules doesn't make sense");
|
|
problems++;
|
|
}
|
|
if (r->rule_flag & PFRULE_STATESLOPPY &&
|
|
(r->keep_state == PF_STATE_MODULATE ||
|
|
r->keep_state == PF_STATE_SYNPROXY)) {
|
|
yyerror("sloppy state matching cannot be used with "
|
|
"synproxy state or modulate state");
|
|
problems++;
|
|
}
|
|
return (-problems);
|
|
}
|
|
|
|
int
|
|
nat_consistent(struct pf_rule *r)
|
|
{
|
|
return (0); /* yeah! */
|
|
}
|
|
|
|
int
|
|
rdr_consistent(struct pf_rule *r)
|
|
{
|
|
int problems = 0;
|
|
|
|
if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
|
|
if (r->src.port_op) {
|
|
yyerror("src port only applies to tcp/udp");
|
|
problems++;
|
|
}
|
|
if (r->dst.port_op) {
|
|
yyerror("dst port only applies to tcp/udp");
|
|
problems++;
|
|
}
|
|
if (r->rpool.proxy_port[0]) {
|
|
yyerror("rpool port only applies to tcp/udp");
|
|
problems++;
|
|
}
|
|
}
|
|
if (r->dst.port_op &&
|
|
r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
|
|
yyerror("invalid port operator for rdr destination port");
|
|
problems++;
|
|
}
|
|
return (-problems);
|
|
}
|
|
|
|
int
|
|
process_tabledef(char *name, struct table_opts *opts)
|
|
{
|
|
struct pfr_buffer ab;
|
|
struct node_tinit *ti;
|
|
unsigned long maxcount;
|
|
size_t s = sizeof(maxcount);
|
|
|
|
bzero(&ab, sizeof(ab));
|
|
ab.pfrb_type = PFRB_ADDRS;
|
|
SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
|
|
if (ti->file)
|
|
if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
|
|
if (errno)
|
|
yyerror("cannot load \"%s\": %s",
|
|
ti->file, strerror(errno));
|
|
else
|
|
yyerror("file \"%s\" contains bad data",
|
|
ti->file);
|
|
goto _error;
|
|
}
|
|
if (ti->host)
|
|
if (append_addr_host(&ab, ti->host, 0, 0)) {
|
|
yyerror("cannot create address buffer: %s",
|
|
strerror(errno));
|
|
goto _error;
|
|
}
|
|
}
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
print_tabledef(name, opts->flags, opts->init_addr,
|
|
&opts->init_nodes);
|
|
if (!(pf->opts & PF_OPT_NOACTION) &&
|
|
pfctl_define_table(name, opts->flags, opts->init_addr,
|
|
pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
|
|
|
|
if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s,
|
|
NULL, 0) == -1)
|
|
maxcount = 65535;
|
|
|
|
if (ab.pfrb_size > maxcount)
|
|
yyerror("cannot define table %s: too many elements.\n"
|
|
"Consider increasing net.pf.request_maxcount.",
|
|
name);
|
|
else
|
|
yyerror("cannot define table %s: %s", name,
|
|
pfr_strerror(errno));
|
|
|
|
goto _error;
|
|
}
|
|
pf->tdirty = 1;
|
|
pfr_buf_clear(&ab);
|
|
return (0);
|
|
_error:
|
|
pfr_buf_clear(&ab);
|
|
return (-1);
|
|
}
|
|
|
|
struct keywords {
|
|
const char *k_name;
|
|
int k_val;
|
|
};
|
|
|
|
/* macro gore, but you should've seen the prior indentation nightmare... */
|
|
|
|
#define FREE_LIST(T,r) \
|
|
do { \
|
|
T *p, *node = r; \
|
|
while (node != NULL) { \
|
|
p = node; \
|
|
node = node->next; \
|
|
free(p); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define LOOP_THROUGH(T,n,r,C) \
|
|
do { \
|
|
T *n; \
|
|
if (r == NULL) { \
|
|
r = calloc(1, sizeof(T)); \
|
|
if (r == NULL) \
|
|
err(1, "LOOP: calloc"); \
|
|
r->next = NULL; \
|
|
} \
|
|
n = r; \
|
|
while (n != NULL) { \
|
|
do { \
|
|
C; \
|
|
} while (0); \
|
|
n = n->next; \
|
|
} \
|
|
} while (0)
|
|
|
|
void
|
|
expand_label_str(char *label, size_t len, const char *srch, const char *repl)
|
|
{
|
|
char *tmp;
|
|
char *p, *q;
|
|
|
|
if ((tmp = calloc(1, len)) == NULL)
|
|
err(1, "expand_label_str: calloc");
|
|
p = q = label;
|
|
while ((q = strstr(p, srch)) != NULL) {
|
|
*q = '\0';
|
|
if ((strlcat(tmp, p, len) >= len) ||
|
|
(strlcat(tmp, repl, len) >= len))
|
|
errx(1, "expand_label: label too long");
|
|
q += strlen(srch);
|
|
p = q;
|
|
}
|
|
if (strlcat(tmp, p, len) >= len)
|
|
errx(1, "expand_label: label too long");
|
|
strlcpy(label, tmp, len); /* always fits */
|
|
free(tmp);
|
|
}
|
|
|
|
void
|
|
expand_label_if(const char *name, char *label, size_t len, const char *ifname)
|
|
{
|
|
if (strstr(label, name) != NULL) {
|
|
if (!*ifname)
|
|
expand_label_str(label, len, name, "any");
|
|
else
|
|
expand_label_str(label, len, name, ifname);
|
|
}
|
|
}
|
|
|
|
void
|
|
expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
|
|
struct node_host *h)
|
|
{
|
|
char tmp[64], tmp_not[66];
|
|
|
|
if (strstr(label, name) != NULL) {
|
|
switch (h->addr.type) {
|
|
case PF_ADDR_DYNIFTL:
|
|
snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
|
|
break;
|
|
case PF_ADDR_TABLE:
|
|
snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
|
|
break;
|
|
case PF_ADDR_NOROUTE:
|
|
snprintf(tmp, sizeof(tmp), "no-route");
|
|
break;
|
|
case PF_ADDR_URPFFAILED:
|
|
snprintf(tmp, sizeof(tmp), "urpf-failed");
|
|
break;
|
|
case PF_ADDR_ADDRMASK:
|
|
if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
|
|
PF_AZERO(&h->addr.v.a.mask, af)))
|
|
snprintf(tmp, sizeof(tmp), "any");
|
|
else {
|
|
char a[48];
|
|
int bits;
|
|
|
|
if (inet_ntop(af, &h->addr.v.a.addr, a,
|
|
sizeof(a)) == NULL)
|
|
snprintf(tmp, sizeof(tmp), "?");
|
|
else {
|
|
bits = unmask(&h->addr.v.a.mask, af);
|
|
if ((af == AF_INET && bits < 32) ||
|
|
(af == AF_INET6 && bits < 128))
|
|
snprintf(tmp, sizeof(tmp),
|
|
"%s/%d", a, bits);
|
|
else
|
|
snprintf(tmp, sizeof(tmp),
|
|
"%s", a);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
snprintf(tmp, sizeof(tmp), "?");
|
|
break;
|
|
}
|
|
|
|
if (h->not) {
|
|
snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
|
|
expand_label_str(label, len, name, tmp_not);
|
|
} else
|
|
expand_label_str(label, len, name, tmp);
|
|
}
|
|
}
|
|
|
|
void
|
|
expand_label_port(const char *name, char *label, size_t len,
|
|
struct node_port *port)
|
|
{
|
|
char a1[6], a2[6], op[13] = "";
|
|
|
|
if (strstr(label, name) != NULL) {
|
|
snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
|
|
snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
|
|
if (!port->op)
|
|
;
|
|
else if (port->op == PF_OP_IRG)
|
|
snprintf(op, sizeof(op), "%s><%s", a1, a2);
|
|
else if (port->op == PF_OP_XRG)
|
|
snprintf(op, sizeof(op), "%s<>%s", a1, a2);
|
|
else if (port->op == PF_OP_EQ)
|
|
snprintf(op, sizeof(op), "%s", a1);
|
|
else if (port->op == PF_OP_NE)
|
|
snprintf(op, sizeof(op), "!=%s", a1);
|
|
else if (port->op == PF_OP_LT)
|
|
snprintf(op, sizeof(op), "<%s", a1);
|
|
else if (port->op == PF_OP_LE)
|
|
snprintf(op, sizeof(op), "<=%s", a1);
|
|
else if (port->op == PF_OP_GT)
|
|
snprintf(op, sizeof(op), ">%s", a1);
|
|
else if (port->op == PF_OP_GE)
|
|
snprintf(op, sizeof(op), ">=%s", a1);
|
|
expand_label_str(label, len, name, op);
|
|
}
|
|
}
|
|
|
|
void
|
|
expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
|
|
{
|
|
struct protoent *pe;
|
|
char n[4];
|
|
|
|
if (strstr(label, name) != NULL) {
|
|
pe = getprotobynumber(proto);
|
|
if (pe != NULL)
|
|
expand_label_str(label, len, name, pe->p_name);
|
|
else {
|
|
snprintf(n, sizeof(n), "%u", proto);
|
|
expand_label_str(label, len, name, n);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
expand_label_nr(const char *name, char *label, size_t len)
|
|
{
|
|
char n[11];
|
|
|
|
if (strstr(label, name) != NULL) {
|
|
snprintf(n, sizeof(n), "%u", pf->anchor->match);
|
|
expand_label_str(label, len, name, n);
|
|
}
|
|
}
|
|
|
|
void
|
|
expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
|
|
struct node_host *src_host, struct node_port *src_port,
|
|
struct node_host *dst_host, struct node_port *dst_port,
|
|
u_int8_t proto)
|
|
{
|
|
expand_label_if("$if", label, len, ifname);
|
|
expand_label_addr("$srcaddr", label, len, af, src_host);
|
|
expand_label_addr("$dstaddr", label, len, af, dst_host);
|
|
expand_label_port("$srcport", label, len, src_port);
|
|
expand_label_port("$dstport", label, len, dst_port);
|
|
expand_label_proto("$proto", label, len, proto);
|
|
expand_label_nr("$nr", label, len);
|
|
}
|
|
|
|
int
|
|
expand_altq(struct pf_altq *a, struct node_if *interfaces,
|
|
struct node_queue *nqueues, struct node_queue_bw bwspec,
|
|
struct node_queue_opt *opts)
|
|
{
|
|
struct pf_altq pa, pb;
|
|
char qname[PF_QNAME_SIZE];
|
|
struct node_queue *n;
|
|
struct node_queue_bw bw;
|
|
int errs = 0;
|
|
|
|
if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
|
|
FREE_LIST(struct node_if, interfaces);
|
|
if (nqueues)
|
|
FREE_LIST(struct node_queue, nqueues);
|
|
return (0);
|
|
}
|
|
|
|
LOOP_THROUGH(struct node_if, interface, interfaces,
|
|
memcpy(&pa, a, sizeof(struct pf_altq));
|
|
if (strlcpy(pa.ifname, interface->ifname,
|
|
sizeof(pa.ifname)) >= sizeof(pa.ifname))
|
|
errx(1, "expand_altq: strlcpy");
|
|
|
|
if (interface->not) {
|
|
yyerror("altq on ! <interface> is not supported");
|
|
errs++;
|
|
} else {
|
|
if (eval_pfaltq(pf, &pa, &bwspec, opts))
|
|
errs++;
|
|
else
|
|
if (pfctl_add_altq(pf, &pa))
|
|
errs++;
|
|
|
|
if (pf->opts & PF_OPT_VERBOSE) {
|
|
print_altq(&pf->paltq->altq, 0,
|
|
&bwspec, opts);
|
|
if (nqueues && nqueues->tail) {
|
|
printf("queue { ");
|
|
LOOP_THROUGH(struct node_queue, queue,
|
|
nqueues,
|
|
printf("%s ",
|
|
queue->queue);
|
|
);
|
|
printf("}");
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
if (pa.scheduler == ALTQT_CBQ ||
|
|
pa.scheduler == ALTQT_HFSC) {
|
|
/* now create a root queue */
|
|
memset(&pb, 0, sizeof(struct pf_altq));
|
|
if (strlcpy(qname, "root_", sizeof(qname)) >=
|
|
sizeof(qname))
|
|
errx(1, "expand_altq: strlcpy");
|
|
if (strlcat(qname, interface->ifname,
|
|
sizeof(qname)) >= sizeof(qname))
|
|
errx(1, "expand_altq: strlcat");
|
|
if (strlcpy(pb.qname, qname,
|
|
sizeof(pb.qname)) >= sizeof(pb.qname))
|
|
errx(1, "expand_altq: strlcpy");
|
|
if (strlcpy(pb.ifname, interface->ifname,
|
|
sizeof(pb.ifname)) >= sizeof(pb.ifname))
|
|
errx(1, "expand_altq: strlcpy");
|
|
pb.qlimit = pa.qlimit;
|
|
pb.scheduler = pa.scheduler;
|
|
bw.bw_absolute = pa.ifbandwidth;
|
|
bw.bw_percent = 0;
|
|
if (eval_pfqueue(pf, &pb, &bw, opts))
|
|
errs++;
|
|
else
|
|
if (pfctl_add_altq(pf, &pb))
|
|
errs++;
|
|
}
|
|
|
|
LOOP_THROUGH(struct node_queue, queue, nqueues,
|
|
n = calloc(1, sizeof(struct node_queue));
|
|
if (n == NULL)
|
|
err(1, "expand_altq: calloc");
|
|
if (pa.scheduler == ALTQT_CBQ ||
|
|
pa.scheduler == ALTQT_HFSC)
|
|
if (strlcpy(n->parent, qname,
|
|
sizeof(n->parent)) >=
|
|
sizeof(n->parent))
|
|
errx(1, "expand_altq: strlcpy");
|
|
if (strlcpy(n->queue, queue->queue,
|
|
sizeof(n->queue)) >= sizeof(n->queue))
|
|
errx(1, "expand_altq: strlcpy");
|
|
if (strlcpy(n->ifname, interface->ifname,
|
|
sizeof(n->ifname)) >= sizeof(n->ifname))
|
|
errx(1, "expand_altq: strlcpy");
|
|
n->scheduler = pa.scheduler;
|
|
n->next = NULL;
|
|
n->tail = n;
|
|
if (queues == NULL)
|
|
queues = n;
|
|
else {
|
|
queues->tail->next = n;
|
|
queues->tail = n;
|
|
}
|
|
);
|
|
}
|
|
);
|
|
FREE_LIST(struct node_if, interfaces);
|
|
if (nqueues)
|
|
FREE_LIST(struct node_queue, nqueues);
|
|
|
|
return (errs);
|
|
}
|
|
|
|
int
|
|
expand_queue(struct pf_altq *a, struct node_if *interfaces,
|
|
struct node_queue *nqueues, struct node_queue_bw bwspec,
|
|
struct node_queue_opt *opts)
|
|
{
|
|
struct node_queue *n, *nq;
|
|
struct pf_altq pa;
|
|
u_int8_t found = 0;
|
|
u_int8_t errs = 0;
|
|
|
|
if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
|
|
FREE_LIST(struct node_queue, nqueues);
|
|
return (0);
|
|
}
|
|
|
|
if (queues == NULL) {
|
|
yyerror("queue %s has no parent", a->qname);
|
|
FREE_LIST(struct node_queue, nqueues);
|
|
return (1);
|
|
}
|
|
|
|
LOOP_THROUGH(struct node_if, interface, interfaces,
|
|
LOOP_THROUGH(struct node_queue, tqueue, queues,
|
|
if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
|
|
(interface->ifname[0] == 0 ||
|
|
(!interface->not && !strncmp(interface->ifname,
|
|
tqueue->ifname, IFNAMSIZ)) ||
|
|
(interface->not && strncmp(interface->ifname,
|
|
tqueue->ifname, IFNAMSIZ)))) {
|
|
/* found ourself in queues */
|
|
found++;
|
|
|
|
memcpy(&pa, a, sizeof(struct pf_altq));
|
|
|
|
if (pa.scheduler != ALTQT_NONE &&
|
|
pa.scheduler != tqueue->scheduler) {
|
|
yyerror("exactly one scheduler type "
|
|
"per interface allowed");
|
|
return (1);
|
|
}
|
|
pa.scheduler = tqueue->scheduler;
|
|
|
|
/* scheduler dependent error checking */
|
|
switch (pa.scheduler) {
|
|
case ALTQT_PRIQ:
|
|
if (nqueues != NULL) {
|
|
yyerror("priq queues cannot "
|
|
"have child queues");
|
|
return (1);
|
|
}
|
|
if (bwspec.bw_absolute > 0 ||
|
|
bwspec.bw_percent < 100) {
|
|
yyerror("priq doesn't take "
|
|
"bandwidth");
|
|
return (1);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (strlcpy(pa.ifname, tqueue->ifname,
|
|
sizeof(pa.ifname)) >= sizeof(pa.ifname))
|
|
errx(1, "expand_queue: strlcpy");
|
|
if (strlcpy(pa.parent, tqueue->parent,
|
|
sizeof(pa.parent)) >= sizeof(pa.parent))
|
|
errx(1, "expand_queue: strlcpy");
|
|
|
|
if (eval_pfqueue(pf, &pa, &bwspec, opts))
|
|
errs++;
|
|
else
|
|
if (pfctl_add_altq(pf, &pa))
|
|
errs++;
|
|
|
|
for (nq = nqueues; nq != NULL; nq = nq->next) {
|
|
if (!strcmp(a->qname, nq->queue)) {
|
|
yyerror("queue cannot have "
|
|
"itself as child");
|
|
errs++;
|
|
continue;
|
|
}
|
|
n = calloc(1,
|
|
sizeof(struct node_queue));
|
|
if (n == NULL)
|
|
err(1, "expand_queue: calloc");
|
|
if (strlcpy(n->parent, a->qname,
|
|
sizeof(n->parent)) >=
|
|
sizeof(n->parent))
|
|
errx(1, "expand_queue strlcpy");
|
|
if (strlcpy(n->queue, nq->queue,
|
|
sizeof(n->queue)) >=
|
|
sizeof(n->queue))
|
|
errx(1, "expand_queue strlcpy");
|
|
if (strlcpy(n->ifname, tqueue->ifname,
|
|
sizeof(n->ifname)) >=
|
|
sizeof(n->ifname))
|
|
errx(1, "expand_queue strlcpy");
|
|
n->scheduler = tqueue->scheduler;
|
|
n->next = NULL;
|
|
n->tail = n;
|
|
if (queues == NULL)
|
|
queues = n;
|
|
else {
|
|
queues->tail->next = n;
|
|
queues->tail = n;
|
|
}
|
|
}
|
|
if ((pf->opts & PF_OPT_VERBOSE) && (
|
|
(found == 1 && interface->ifname[0] == 0) ||
|
|
(found > 0 && interface->ifname[0] != 0))) {
|
|
print_queue(&pf->paltq->altq, 0,
|
|
&bwspec, interface->ifname[0] != 0,
|
|
opts);
|
|
if (nqueues && nqueues->tail) {
|
|
printf("{ ");
|
|
LOOP_THROUGH(struct node_queue,
|
|
queue, nqueues,
|
|
printf("%s ",
|
|
queue->queue);
|
|
);
|
|
printf("}");
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
);
|
|
);
|
|
|
|
FREE_LIST(struct node_queue, nqueues);
|
|
FREE_LIST(struct node_if, interfaces);
|
|
|
|
if (!found) {
|
|
yyerror("queue %s has no parent", a->qname);
|
|
errs++;
|
|
}
|
|
|
|
if (errs)
|
|
return (1);
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
expand_rule(struct pf_rule *r,
|
|
struct node_if *interfaces, struct node_host *rpool_hosts,
|
|
struct node_proto *protos, struct node_os *src_oses,
|
|
struct node_host *src_hosts, struct node_port *src_ports,
|
|
struct node_host *dst_hosts, struct node_port *dst_ports,
|
|
struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
|
|
const char *anchor_call)
|
|
{
|
|
sa_family_t af = r->af;
|
|
int added = 0, error = 0;
|
|
char ifname[IF_NAMESIZE];
|
|
char label[PF_RULE_LABEL_SIZE];
|
|
char tagname[PF_TAG_NAME_SIZE];
|
|
char match_tagname[PF_TAG_NAME_SIZE];
|
|
struct pf_pooladdr *pa;
|
|
struct node_host *h;
|
|
u_int8_t flags, flagset, keep_state;
|
|
|
|
if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
|
|
errx(1, "expand_rule: strlcpy");
|
|
if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
|
|
errx(1, "expand_rule: strlcpy");
|
|
if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
|
|
sizeof(match_tagname))
|
|
errx(1, "expand_rule: strlcpy");
|
|
flags = r->flags;
|
|
flagset = r->flagset;
|
|
keep_state = r->keep_state;
|
|
|
|
LOOP_THROUGH(struct node_if, interface, interfaces,
|
|
LOOP_THROUGH(struct node_proto, proto, protos,
|
|
LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
|
|
LOOP_THROUGH(struct node_host, src_host, src_hosts,
|
|
LOOP_THROUGH(struct node_port, src_port, src_ports,
|
|
LOOP_THROUGH(struct node_os, src_os, src_oses,
|
|
LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
|
|
LOOP_THROUGH(struct node_port, dst_port, dst_ports,
|
|
LOOP_THROUGH(struct node_uid, uid, uids,
|
|
LOOP_THROUGH(struct node_gid, gid, gids,
|
|
|
|
r->af = af;
|
|
/* for link-local IPv6 address, interface must match up */
|
|
if ((r->af && src_host->af && r->af != src_host->af) ||
|
|
(r->af && dst_host->af && r->af != dst_host->af) ||
|
|
(src_host->af && dst_host->af &&
|
|
src_host->af != dst_host->af) ||
|
|
(src_host->ifindex && dst_host->ifindex &&
|
|
src_host->ifindex != dst_host->ifindex) ||
|
|
(src_host->ifindex && *interface->ifname &&
|
|
src_host->ifindex != if_nametoindex(interface->ifname)) ||
|
|
(dst_host->ifindex && *interface->ifname &&
|
|
dst_host->ifindex != if_nametoindex(interface->ifname)))
|
|
continue;
|
|
if (!r->af && src_host->af)
|
|
r->af = src_host->af;
|
|
else if (!r->af && dst_host->af)
|
|
r->af = dst_host->af;
|
|
|
|
if (*interface->ifname)
|
|
strlcpy(r->ifname, interface->ifname,
|
|
sizeof(r->ifname));
|
|
else if (if_indextoname(src_host->ifindex, ifname))
|
|
strlcpy(r->ifname, ifname, sizeof(r->ifname));
|
|
else if (if_indextoname(dst_host->ifindex, ifname))
|
|
strlcpy(r->ifname, ifname, sizeof(r->ifname));
|
|
else
|
|
memset(r->ifname, '\0', sizeof(r->ifname));
|
|
|
|
if (strlcpy(r->label, label, sizeof(r->label)) >=
|
|
sizeof(r->label))
|
|
errx(1, "expand_rule: strlcpy");
|
|
if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
|
|
sizeof(r->tagname))
|
|
errx(1, "expand_rule: strlcpy");
|
|
if (strlcpy(r->match_tagname, match_tagname,
|
|
sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
|
|
errx(1, "expand_rule: strlcpy");
|
|
expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
|
|
src_host, src_port, dst_host, dst_port, proto->proto);
|
|
expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
|
|
src_host, src_port, dst_host, dst_port, proto->proto);
|
|
expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
|
|
r->af, src_host, src_port, dst_host, dst_port,
|
|
proto->proto);
|
|
|
|
error += check_netmask(src_host, r->af);
|
|
error += check_netmask(dst_host, r->af);
|
|
|
|
r->ifnot = interface->not;
|
|
r->proto = proto->proto;
|
|
r->src.addr = src_host->addr;
|
|
r->src.neg = src_host->not;
|
|
r->src.port[0] = src_port->port[0];
|
|
r->src.port[1] = src_port->port[1];
|
|
r->src.port_op = src_port->op;
|
|
r->dst.addr = dst_host->addr;
|
|
r->dst.neg = dst_host->not;
|
|
r->dst.port[0] = dst_port->port[0];
|
|
r->dst.port[1] = dst_port->port[1];
|
|
r->dst.port_op = dst_port->op;
|
|
r->uid.op = uid->op;
|
|
r->uid.uid[0] = uid->uid[0];
|
|
r->uid.uid[1] = uid->uid[1];
|
|
r->gid.op = gid->op;
|
|
r->gid.gid[0] = gid->gid[0];
|
|
r->gid.gid[1] = gid->gid[1];
|
|
r->type = icmp_type->type;
|
|
r->code = icmp_type->code;
|
|
|
|
if ((keep_state == PF_STATE_MODULATE ||
|
|
keep_state == PF_STATE_SYNPROXY) &&
|
|
r->proto && r->proto != IPPROTO_TCP)
|
|
r->keep_state = PF_STATE_NORMAL;
|
|
else
|
|
r->keep_state = keep_state;
|
|
|
|
if (r->proto && r->proto != IPPROTO_TCP) {
|
|
r->flags = 0;
|
|
r->flagset = 0;
|
|
} else {
|
|
r->flags = flags;
|
|
r->flagset = flagset;
|
|
}
|
|
if (icmp_type->proto && r->proto != icmp_type->proto) {
|
|
yyerror("icmp-type mismatch");
|
|
error++;
|
|
}
|
|
|
|
if (src_os && src_os->os) {
|
|
r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
|
|
if ((pf->opts & PF_OPT_VERBOSE2) &&
|
|
r->os_fingerprint == PF_OSFP_NOMATCH)
|
|
fprintf(stderr,
|
|
"warning: unknown '%s' OS fingerprint\n",
|
|
src_os->os);
|
|
} else {
|
|
r->os_fingerprint = PF_OSFP_ANY;
|
|
}
|
|
|
|
TAILQ_INIT(&r->rpool.list);
|
|
for (h = rpool_hosts; h != NULL; h = h->next) {
|
|
pa = calloc(1, sizeof(struct pf_pooladdr));
|
|
if (pa == NULL)
|
|
err(1, "expand_rule: calloc");
|
|
pa->addr = h->addr;
|
|
if (h->ifname != NULL) {
|
|
if (strlcpy(pa->ifname, h->ifname,
|
|
sizeof(pa->ifname)) >=
|
|
sizeof(pa->ifname))
|
|
errx(1, "expand_rule: strlcpy");
|
|
} else
|
|
pa->ifname[0] = 0;
|
|
TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
|
|
}
|
|
|
|
if (rule_consistent(r, anchor_call[0]) < 0 || error)
|
|
yyerror("skipping rule due to errors");
|
|
else {
|
|
r->nr = pf->astack[pf->asd]->match++;
|
|
pfctl_add_rule(pf, r, anchor_call);
|
|
added++;
|
|
}
|
|
|
|
))))))))));
|
|
|
|
FREE_LIST(struct node_if, interfaces);
|
|
FREE_LIST(struct node_proto, protos);
|
|
FREE_LIST(struct node_host, src_hosts);
|
|
FREE_LIST(struct node_port, src_ports);
|
|
FREE_LIST(struct node_os, src_oses);
|
|
FREE_LIST(struct node_host, dst_hosts);
|
|
FREE_LIST(struct node_port, dst_ports);
|
|
FREE_LIST(struct node_uid, uids);
|
|
FREE_LIST(struct node_gid, gids);
|
|
FREE_LIST(struct node_icmp, icmp_types);
|
|
FREE_LIST(struct node_host, rpool_hosts);
|
|
|
|
if (!added)
|
|
yyerror("rule expands to no valid combination");
|
|
}
|
|
|
|
int
|
|
expand_skip_interface(struct node_if *interfaces)
|
|
{
|
|
int errs = 0;
|
|
|
|
if (!interfaces || (!interfaces->next && !interfaces->not &&
|
|
!strcmp(interfaces->ifname, "none"))) {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("set skip on none\n");
|
|
errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
|
|
return (errs);
|
|
}
|
|
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("set skip on {");
|
|
LOOP_THROUGH(struct node_if, interface, interfaces,
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf(" %s", interface->ifname);
|
|
if (interface->not) {
|
|
yyerror("skip on ! <interface> is not supported");
|
|
errs++;
|
|
} else
|
|
errs += pfctl_set_interface_flags(pf,
|
|
interface->ifname, PFI_IFLAG_SKIP, 1);
|
|
);
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf(" }\n");
|
|
|
|
FREE_LIST(struct node_if, interfaces);
|
|
|
|
if (errs)
|
|
return (1);
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
#undef FREE_LIST
|
|
#undef LOOP_THROUGH
|
|
|
|
int
|
|
check_rulestate(int desired_state)
|
|
{
|
|
if (require_order && (rulestate > desired_state)) {
|
|
yyerror("Rules must be in order: options, normalization, "
|
|
"queueing, translation, filtering");
|
|
return (1);
|
|
}
|
|
rulestate = desired_state;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
kw_cmp(const void *k, const void *e)
|
|
{
|
|
return (strcmp(k, ((const struct keywords *)e)->k_name));
|
|
}
|
|
|
|
int
|
|
lookup(char *s)
|
|
{
|
|
/* this has to be sorted always */
|
|
static const struct keywords keywords[] = {
|
|
{ "all", ALL},
|
|
{ "allow-opts", ALLOWOPTS},
|
|
{ "altq", ALTQ},
|
|
{ "anchor", ANCHOR},
|
|
{ "antispoof", ANTISPOOF},
|
|
{ "any", ANY},
|
|
{ "bandwidth", BANDWIDTH},
|
|
{ "binat", BINAT},
|
|
{ "binat-anchor", BINATANCHOR},
|
|
{ "bitmask", BITMASK},
|
|
{ "block", BLOCK},
|
|
{ "block-policy", BLOCKPOLICY},
|
|
{ "buckets", BUCKETS},
|
|
{ "cbq", CBQ},
|
|
{ "code", CODE},
|
|
{ "codelq", CODEL},
|
|
{ "crop", FRAGCROP},
|
|
{ "debug", DEBUG},
|
|
{ "divert-reply", DIVERTREPLY},
|
|
{ "divert-to", DIVERTTO},
|
|
{ "drop", DROP},
|
|
{ "drop-ovl", FRAGDROP},
|
|
{ "dup-to", DUPTO},
|
|
{ "fail-policy", FAILPOLICY},
|
|
{ "fairq", FAIRQ},
|
|
{ "fastroute", FASTROUTE},
|
|
{ "file", FILENAME},
|
|
{ "fingerprints", FINGERPRINTS},
|
|
{ "flags", FLAGS},
|
|
{ "floating", FLOATING},
|
|
{ "flush", FLUSH},
|
|
{ "for", FOR},
|
|
{ "fragment", FRAGMENT},
|
|
{ "from", FROM},
|
|
{ "global", GLOBAL},
|
|
{ "group", GROUP},
|
|
{ "hfsc", HFSC},
|
|
{ "hogs", HOGS},
|
|
{ "hostid", HOSTID},
|
|
{ "icmp-type", ICMPTYPE},
|
|
{ "icmp6-type", ICMP6TYPE},
|
|
{ "if-bound", IFBOUND},
|
|
{ "in", IN},
|
|
{ "include", INCLUDE},
|
|
{ "inet", INET},
|
|
{ "inet6", INET6},
|
|
{ "interval", INTERVAL},
|
|
{ "keep", KEEP},
|
|
{ "label", LABEL},
|
|
{ "limit", LIMIT},
|
|
{ "linkshare", LINKSHARE},
|
|
{ "load", LOAD},
|
|
{ "log", LOG},
|
|
{ "loginterface", LOGINTERFACE},
|
|
{ "max", MAXIMUM},
|
|
{ "max-mss", MAXMSS},
|
|
{ "max-src-conn", MAXSRCCONN},
|
|
{ "max-src-conn-rate", MAXSRCCONNRATE},
|
|
{ "max-src-nodes", MAXSRCNODES},
|
|
{ "max-src-states", MAXSRCSTATES},
|
|
{ "min-ttl", MINTTL},
|
|
{ "modulate", MODULATE},
|
|
{ "nat", NAT},
|
|
{ "nat-anchor", NATANCHOR},
|
|
{ "no", NO},
|
|
{ "no-df", NODF},
|
|
{ "no-route", NOROUTE},
|
|
{ "no-sync", NOSYNC},
|
|
{ "on", ON},
|
|
{ "optimization", OPTIMIZATION},
|
|
{ "os", OS},
|
|
{ "out", OUT},
|
|
{ "overload", OVERLOAD},
|
|
{ "pass", PASS},
|
|
{ "port", PORT},
|
|
{ "prio", PRIO},
|
|
{ "priority", PRIORITY},
|
|
{ "priq", PRIQ},
|
|
{ "probability", PROBABILITY},
|
|
{ "proto", PROTO},
|
|
{ "qlimit", QLIMIT},
|
|
{ "queue", QUEUE},
|
|
{ "quick", QUICK},
|
|
{ "random", RANDOM},
|
|
{ "random-id", RANDOMID},
|
|
{ "rdr", RDR},
|
|
{ "rdr-anchor", RDRANCHOR},
|
|
{ "realtime", REALTIME},
|
|
{ "reassemble", REASSEMBLE},
|
|
{ "reply-to", REPLYTO},
|
|
{ "require-order", REQUIREORDER},
|
|
{ "return", RETURN},
|
|
{ "return-icmp", RETURNICMP},
|
|
{ "return-icmp6", RETURNICMP6},
|
|
{ "return-rst", RETURNRST},
|
|
{ "round-robin", ROUNDROBIN},
|
|
{ "route", ROUTE},
|
|
{ "route-to", ROUTETO},
|
|
{ "rtable", RTABLE},
|
|
{ "rule", RULE},
|
|
{ "ruleset-optimization", RULESET_OPTIMIZATION},
|
|
{ "scrub", SCRUB},
|
|
{ "set", SET},
|
|
{ "set-tos", SETTOS},
|
|
{ "skip", SKIP},
|
|
{ "sloppy", SLOPPY},
|
|
{ "source-hash", SOURCEHASH},
|
|
{ "source-track", SOURCETRACK},
|
|
{ "state", STATE},
|
|
{ "state-defaults", STATEDEFAULTS},
|
|
{ "state-policy", STATEPOLICY},
|
|
{ "static-port", STATICPORT},
|
|
{ "sticky-address", STICKYADDRESS},
|
|
{ "synproxy", SYNPROXY},
|
|
{ "table", TABLE},
|
|
{ "tag", TAG},
|
|
{ "tagged", TAGGED},
|
|
{ "target", TARGET},
|
|
{ "tbrsize", TBRSIZE},
|
|
{ "timeout", TIMEOUT},
|
|
{ "to", TO},
|
|
{ "tos", TOS},
|
|
{ "ttl", TTL},
|
|
{ "upperlimit", UPPERLIMIT},
|
|
{ "urpf-failed", URPFFAILED},
|
|
{ "user", USER},
|
|
};
|
|
const struct keywords *p;
|
|
|
|
p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
|
|
sizeof(keywords[0]), kw_cmp);
|
|
|
|
if (p) {
|
|
if (debug > 1)
|
|
fprintf(stderr, "%s: %d\n", s, p->k_val);
|
|
return (p->k_val);
|
|
} else {
|
|
if (debug > 1)
|
|
fprintf(stderr, "string: %s\n", s);
|
|
return (STRING);
|
|
}
|
|
}
|
|
|
|
#define MAXPUSHBACK 128
|
|
|
|
static char *parsebuf;
|
|
static int parseindex;
|
|
static char pushback_buffer[MAXPUSHBACK];
|
|
static int pushback_index = 0;
|
|
|
|
int
|
|
lgetc(int quotec)
|
|
{
|
|
int c, next;
|
|
|
|
if (parsebuf) {
|
|
/* Read character from the parsebuffer instead of input. */
|
|
if (parseindex >= 0) {
|
|
c = parsebuf[parseindex++];
|
|
if (c != '\0')
|
|
return (c);
|
|
parsebuf = NULL;
|
|
} else
|
|
parseindex++;
|
|
}
|
|
|
|
if (pushback_index)
|
|
return (pushback_buffer[--pushback_index]);
|
|
|
|
if (quotec) {
|
|
if ((c = getc(file->stream)) == EOF) {
|
|
yyerror("reached end of file while parsing quoted string");
|
|
if (popfile() == EOF)
|
|
return (EOF);
|
|
return (quotec);
|
|
}
|
|
return (c);
|
|
}
|
|
|
|
while ((c = getc(file->stream)) == '\\') {
|
|
next = getc(file->stream);
|
|
if (next != '\n') {
|
|
c = next;
|
|
break;
|
|
}
|
|
yylval.lineno = file->lineno;
|
|
file->lineno++;
|
|
}
|
|
|
|
while (c == EOF) {
|
|
if (popfile() == EOF)
|
|
return (EOF);
|
|
c = getc(file->stream);
|
|
}
|
|
return (c);
|
|
}
|
|
|
|
int
|
|
lungetc(int c)
|
|
{
|
|
if (c == EOF)
|
|
return (EOF);
|
|
if (parsebuf) {
|
|
parseindex--;
|
|
if (parseindex >= 0)
|
|
return (c);
|
|
}
|
|
if (pushback_index < MAXPUSHBACK-1)
|
|
return (pushback_buffer[pushback_index++] = c);
|
|
else
|
|
return (EOF);
|
|
}
|
|
|
|
int
|
|
findeol(void)
|
|
{
|
|
int c;
|
|
|
|
parsebuf = NULL;
|
|
|
|
/* skip to either EOF or the first real EOL */
|
|
while (1) {
|
|
if (pushback_index)
|
|
c = pushback_buffer[--pushback_index];
|
|
else
|
|
c = lgetc(0);
|
|
if (c == '\n') {
|
|
file->lineno++;
|
|
break;
|
|
}
|
|
if (c == EOF)
|
|
break;
|
|
}
|
|
return (ERROR);
|
|
}
|
|
|
|
int
|
|
yylex(void)
|
|
{
|
|
char buf[8096];
|
|
char *p, *val;
|
|
int quotec, next, c;
|
|
int token;
|
|
|
|
top:
|
|
p = buf;
|
|
while ((c = lgetc(0)) == ' ' || c == '\t')
|
|
; /* nothing */
|
|
|
|
yylval.lineno = file->lineno;
|
|
if (c == '#')
|
|
while ((c = lgetc(0)) != '\n' && c != EOF)
|
|
; /* nothing */
|
|
if (c == '$' && parsebuf == NULL) {
|
|
while (1) {
|
|
if ((c = lgetc(0)) == EOF)
|
|
return (0);
|
|
|
|
if (p + 1 >= buf + sizeof(buf) - 1) {
|
|
yyerror("string too long");
|
|
return (findeol());
|
|
}
|
|
if (isalnum(c) || c == '_') {
|
|
*p++ = (char)c;
|
|
continue;
|
|
}
|
|
*p = '\0';
|
|
lungetc(c);
|
|
break;
|
|
}
|
|
val = symget(buf);
|
|
if (val == NULL) {
|
|
yyerror("macro '%s' not defined", buf);
|
|
return (findeol());
|
|
}
|
|
parsebuf = val;
|
|
parseindex = 0;
|
|
goto top;
|
|
}
|
|
|
|
switch (c) {
|
|
case '\'':
|
|
case '"':
|
|
quotec = c;
|
|
while (1) {
|
|
if ((c = lgetc(quotec)) == EOF)
|
|
return (0);
|
|
if (c == '\n') {
|
|
file->lineno++;
|
|
continue;
|
|
} else if (c == '\\') {
|
|
if ((next = lgetc(quotec)) == EOF)
|
|
return (0);
|
|
if (next == quotec || c == ' ' || c == '\t')
|
|
c = next;
|
|
else if (next == '\n') {
|
|
file->lineno++;
|
|
continue;
|
|
}
|
|
else
|
|
lungetc(next);
|
|
} else if (c == quotec) {
|
|
*p = '\0';
|
|
break;
|
|
}
|
|
if (p + 1 >= buf + sizeof(buf) - 1) {
|
|
yyerror("string too long");
|
|
return (findeol());
|
|
}
|
|
*p++ = (char)c;
|
|
}
|
|
yylval.v.string = strdup(buf);
|
|
if (yylval.v.string == NULL)
|
|
err(1, "yylex: strdup");
|
|
return (STRING);
|
|
case '<':
|
|
next = lgetc(0);
|
|
if (next == '>') {
|
|
yylval.v.i = PF_OP_XRG;
|
|
return (PORTBINARY);
|
|
}
|
|
lungetc(next);
|
|
break;
|
|
case '>':
|
|
next = lgetc(0);
|
|
if (next == '<') {
|
|
yylval.v.i = PF_OP_IRG;
|
|
return (PORTBINARY);
|
|
}
|
|
lungetc(next);
|
|
break;
|
|
case '-':
|
|
next = lgetc(0);
|
|
if (next == '>')
|
|
return (ARROW);
|
|
lungetc(next);
|
|
break;
|
|
}
|
|
|
|
#define allowed_to_end_number(x) \
|
|
(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
|
|
|
|
if (c == '-' || isdigit(c)) {
|
|
do {
|
|
*p++ = c;
|
|
if ((unsigned)(p-buf) >= sizeof(buf)) {
|
|
yyerror("string too long");
|
|
return (findeol());
|
|
}
|
|
} while ((c = lgetc(0)) != EOF && isdigit(c));
|
|
lungetc(c);
|
|
if (p == buf + 1 && buf[0] == '-')
|
|
goto nodigits;
|
|
if (c == EOF || allowed_to_end_number(c)) {
|
|
const char *errstr = NULL;
|
|
|
|
*p = '\0';
|
|
yylval.v.number = strtonum(buf, LLONG_MIN,
|
|
LLONG_MAX, &errstr);
|
|
if (errstr) {
|
|
yyerror("\"%s\" invalid number: %s",
|
|
buf, errstr);
|
|
return (findeol());
|
|
}
|
|
return (NUMBER);
|
|
} else {
|
|
nodigits:
|
|
while (p > buf + 1)
|
|
lungetc(*--p);
|
|
c = *--p;
|
|
if (c == '-')
|
|
return (c);
|
|
}
|
|
}
|
|
|
|
#define allowed_in_string(x) \
|
|
(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
|
|
x != '{' && x != '}' && x != '<' && x != '>' && \
|
|
x != '!' && x != '=' && x != '/' && x != '#' && \
|
|
x != ','))
|
|
|
|
if (isalnum(c) || c == ':' || c == '_') {
|
|
do {
|
|
*p++ = c;
|
|
if ((unsigned)(p-buf) >= sizeof(buf)) {
|
|
yyerror("string too long");
|
|
return (findeol());
|
|
}
|
|
} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
|
|
lungetc(c);
|
|
*p = '\0';
|
|
if ((token = lookup(buf)) == STRING)
|
|
if ((yylval.v.string = strdup(buf)) == NULL)
|
|
err(1, "yylex: strdup");
|
|
return (token);
|
|
}
|
|
if (c == '\n') {
|
|
yylval.lineno = file->lineno;
|
|
file->lineno++;
|
|
}
|
|
if (c == EOF)
|
|
return (0);
|
|
return (c);
|
|
}
|
|
|
|
int
|
|
check_file_secrecy(int fd, const char *fname)
|
|
{
|
|
struct stat st;
|
|
|
|
if (fstat(fd, &st)) {
|
|
warn("cannot stat %s", fname);
|
|
return (-1);
|
|
}
|
|
if (st.st_uid != 0 && st.st_uid != getuid()) {
|
|
warnx("%s: owner not root or current user", fname);
|
|
return (-1);
|
|
}
|
|
if (st.st_mode & (S_IRWXG | S_IRWXO)) {
|
|
warnx("%s: group/world readable/writeable", fname);
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
struct file *
|
|
pushfile(const char *name, int secret)
|
|
{
|
|
struct file *nfile;
|
|
|
|
if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
|
|
(nfile->name = strdup(name)) == NULL) {
|
|
warn("malloc");
|
|
return (NULL);
|
|
}
|
|
if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
|
|
nfile->stream = stdin;
|
|
free(nfile->name);
|
|
if ((nfile->name = strdup("stdin")) == NULL) {
|
|
warn("strdup");
|
|
free(nfile);
|
|
return (NULL);
|
|
}
|
|
} else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
|
|
warn("%s", nfile->name);
|
|
free(nfile->name);
|
|
free(nfile);
|
|
return (NULL);
|
|
} else if (secret &&
|
|
check_file_secrecy(fileno(nfile->stream), nfile->name)) {
|
|
fclose(nfile->stream);
|
|
free(nfile->name);
|
|
free(nfile);
|
|
return (NULL);
|
|
}
|
|
nfile->lineno = 1;
|
|
TAILQ_INSERT_TAIL(&files, nfile, entry);
|
|
return (nfile);
|
|
}
|
|
|
|
int
|
|
popfile(void)
|
|
{
|
|
struct file *prev;
|
|
|
|
if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
|
|
prev->errors += file->errors;
|
|
TAILQ_REMOVE(&files, file, entry);
|
|
fclose(file->stream);
|
|
free(file->name);
|
|
free(file);
|
|
file = prev;
|
|
return (0);
|
|
}
|
|
return (EOF);
|
|
}
|
|
|
|
int
|
|
parse_config(char *filename, struct pfctl *xpf)
|
|
{
|
|
int errors = 0;
|
|
struct sym *sym;
|
|
|
|
pf = xpf;
|
|
errors = 0;
|
|
rulestate = PFCTL_STATE_NONE;
|
|
returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
|
|
returnicmp6default =
|
|
(ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
|
|
blockpolicy = PFRULE_DROP;
|
|
failpolicy = PFRULE_DROP;
|
|
require_order = 1;
|
|
|
|
if ((file = pushfile(filename, 0)) == NULL) {
|
|
warn("cannot open the main config file!");
|
|
return (-1);
|
|
}
|
|
|
|
yyparse();
|
|
errors = file->errors;
|
|
popfile();
|
|
|
|
/* Free macros and check which have not been used. */
|
|
while ((sym = TAILQ_FIRST(&symhead))) {
|
|
if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
|
|
fprintf(stderr, "warning: macro '%s' not "
|
|
"used\n", sym->nam);
|
|
free(sym->nam);
|
|
free(sym->val);
|
|
TAILQ_REMOVE(&symhead, sym, entry);
|
|
free(sym);
|
|
}
|
|
|
|
return (errors ? -1 : 0);
|
|
}
|
|
|
|
int
|
|
symset(const char *nam, const char *val, int persist)
|
|
{
|
|
struct sym *sym;
|
|
|
|
for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
|
|
sym = TAILQ_NEXT(sym, entry))
|
|
; /* nothing */
|
|
|
|
if (sym != NULL) {
|
|
if (sym->persist == 1)
|
|
return (0);
|
|
else {
|
|
free(sym->nam);
|
|
free(sym->val);
|
|
TAILQ_REMOVE(&symhead, sym, entry);
|
|
free(sym);
|
|
}
|
|
}
|
|
if ((sym = calloc(1, sizeof(*sym))) == NULL)
|
|
return (-1);
|
|
|
|
sym->nam = strdup(nam);
|
|
if (sym->nam == NULL) {
|
|
free(sym);
|
|
return (-1);
|
|
}
|
|
sym->val = strdup(val);
|
|
if (sym->val == NULL) {
|
|
free(sym->nam);
|
|
free(sym);
|
|
return (-1);
|
|
}
|
|
sym->used = 0;
|
|
sym->persist = persist;
|
|
TAILQ_INSERT_TAIL(&symhead, sym, entry);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pfctl_cmdline_symset(char *s)
|
|
{
|
|
char *sym, *val;
|
|
int ret;
|
|
|
|
if ((val = strrchr(s, '=')) == NULL)
|
|
return (-1);
|
|
|
|
if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
|
|
err(1, "pfctl_cmdline_symset: malloc");
|
|
|
|
strlcpy(sym, s, strlen(s) - strlen(val) + 1);
|
|
|
|
ret = symset(sym, val + 1, 1);
|
|
free(sym);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
char *
|
|
symget(const char *nam)
|
|
{
|
|
struct sym *sym;
|
|
|
|
TAILQ_FOREACH(sym, &symhead, entry)
|
|
if (strcmp(nam, sym->nam) == 0) {
|
|
sym->used = 1;
|
|
return (sym->val);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
void
|
|
mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
|
|
{
|
|
int i;
|
|
struct pf_rule *r;
|
|
|
|
for (i = 0; i < PF_RULESET_MAX; ++i) {
|
|
while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
|
|
!= NULL) {
|
|
TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
|
|
TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
|
|
dst->anchor->match++;
|
|
}
|
|
src->anchor->match = 0;
|
|
while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
|
|
!= NULL) {
|
|
TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
|
|
TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
|
|
r, entries);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
decide_address_family(struct node_host *n, sa_family_t *af)
|
|
{
|
|
if (*af != 0 || n == NULL)
|
|
return;
|
|
*af = n->af;
|
|
while ((n = n->next) != NULL) {
|
|
if (n->af != *af) {
|
|
*af = 0;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
|
|
{
|
|
struct node_host *n = *nh, *prev = NULL;
|
|
|
|
while (n != NULL) {
|
|
if (*af && n->af && n->af != *af) {
|
|
/* unlink and free n */
|
|
struct node_host *next = n->next;
|
|
|
|
/* adjust tail pointer */
|
|
if (n == (*nh)->tail)
|
|
(*nh)->tail = prev;
|
|
/* adjust previous node's next pointer */
|
|
if (prev == NULL)
|
|
*nh = next;
|
|
else
|
|
prev->next = next;
|
|
/* free node */
|
|
if (n->ifname != NULL)
|
|
free(n->ifname);
|
|
free(n);
|
|
n = next;
|
|
} else {
|
|
if (n->af && !*af)
|
|
*af = n->af;
|
|
prev = n;
|
|
n = n->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
invalid_redirect(struct node_host *nh, sa_family_t af)
|
|
{
|
|
if (!af) {
|
|
struct node_host *n;
|
|
|
|
/* tables and dyniftl are ok without an address family */
|
|
for (n = nh; n != NULL; n = n->next) {
|
|
if (n->addr.type != PF_ADDR_TABLE &&
|
|
n->addr.type != PF_ADDR_DYNIFTL) {
|
|
yyerror("address family not given and "
|
|
"translation address expands to multiple "
|
|
"address families");
|
|
return (1);
|
|
}
|
|
}
|
|
}
|
|
if (nh == NULL) {
|
|
yyerror("no translation address with matching address family "
|
|
"found.");
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
atoul(char *s, u_long *ulvalp)
|
|
{
|
|
u_long ulval;
|
|
char *ep;
|
|
|
|
errno = 0;
|
|
ulval = strtoul(s, &ep, 0);
|
|
if (s[0] == '\0' || *ep != '\0')
|
|
return (-1);
|
|
if (errno == ERANGE && ulval == ULONG_MAX)
|
|
return (-1);
|
|
*ulvalp = ulval;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
getservice(char *n)
|
|
{
|
|
struct servent *s;
|
|
u_long ulval;
|
|
|
|
if (atoul(n, &ulval) == 0) {
|
|
if (ulval > 65535) {
|
|
yyerror("illegal port value %lu", ulval);
|
|
return (-1);
|
|
}
|
|
return (htons(ulval));
|
|
} else {
|
|
s = getservbyname(n, "tcp");
|
|
if (s == NULL)
|
|
s = getservbyname(n, "udp");
|
|
if (s == NULL) {
|
|
yyerror("unknown port %s", n);
|
|
return (-1);
|
|
}
|
|
return (s->s_port);
|
|
}
|
|
}
|
|
|
|
int
|
|
rule_label(struct pf_rule *r, char *s)
|
|
{
|
|
if (s) {
|
|
if (strlcpy(r->label, s, sizeof(r->label)) >=
|
|
sizeof(r->label)) {
|
|
yyerror("rule label too long (max %d chars)",
|
|
sizeof(r->label)-1);
|
|
return (-1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
u_int16_t
|
|
parseicmpspec(char *w, sa_family_t af)
|
|
{
|
|
const struct icmpcodeent *p;
|
|
u_long ulval;
|
|
u_int8_t icmptype;
|
|
|
|
if (af == AF_INET)
|
|
icmptype = returnicmpdefault >> 8;
|
|
else
|
|
icmptype = returnicmp6default >> 8;
|
|
|
|
if (atoul(w, &ulval) == -1) {
|
|
if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
|
|
yyerror("unknown icmp code %s", w);
|
|
return (0);
|
|
}
|
|
ulval = p->code;
|
|
}
|
|
if (ulval > 255) {
|
|
yyerror("invalid icmp code %lu", ulval);
|
|
return (0);
|
|
}
|
|
return (icmptype << 8 | ulval);
|
|
}
|
|
|
|
int
|
|
parseport(char *port, struct range *r, int extensions)
|
|
{
|
|
char *p = strchr(port, ':');
|
|
|
|
if (p == NULL) {
|
|
if ((r->a = getservice(port)) == -1)
|
|
return (-1);
|
|
r->b = 0;
|
|
r->t = PF_OP_NONE;
|
|
return (0);
|
|
}
|
|
if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
|
|
*p = 0;
|
|
if ((r->a = getservice(port)) == -1)
|
|
return (-1);
|
|
r->b = 0;
|
|
r->t = PF_OP_IRG;
|
|
return (0);
|
|
}
|
|
if ((extensions & PPORT_RANGE)) {
|
|
*p++ = 0;
|
|
if ((r->a = getservice(port)) == -1 ||
|
|
(r->b = getservice(p)) == -1)
|
|
return (-1);
|
|
if (r->a == r->b) {
|
|
r->b = 0;
|
|
r->t = PF_OP_NONE;
|
|
} else
|
|
r->t = PF_OP_RRG;
|
|
return (0);
|
|
}
|
|
return (-1);
|
|
}
|
|
|
|
int
|
|
pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
|
|
{
|
|
struct loadanchors *la;
|
|
|
|
TAILQ_FOREACH(la, &loadanchorshead, entries) {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
fprintf(stderr, "\nLoading anchor %s from %s\n",
|
|
la->anchorname, la->filename);
|
|
if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
|
|
la->anchorname, trans) == -1)
|
|
return (-1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
kw_casecmp(const void *k, const void *e)
|
|
{
|
|
return (strcasecmp(k, ((const struct keywords *)e)->k_name));
|
|
}
|
|
|
|
int
|
|
map_tos(char *s, int *val)
|
|
{
|
|
/* DiffServ Codepoints and other TOS mappings */
|
|
const struct keywords toswords[] = {
|
|
{ "af11", IPTOS_DSCP_AF11 },
|
|
{ "af12", IPTOS_DSCP_AF12 },
|
|
{ "af13", IPTOS_DSCP_AF13 },
|
|
{ "af21", IPTOS_DSCP_AF21 },
|
|
{ "af22", IPTOS_DSCP_AF22 },
|
|
{ "af23", IPTOS_DSCP_AF23 },
|
|
{ "af31", IPTOS_DSCP_AF31 },
|
|
{ "af32", IPTOS_DSCP_AF32 },
|
|
{ "af33", IPTOS_DSCP_AF33 },
|
|
{ "af41", IPTOS_DSCP_AF41 },
|
|
{ "af42", IPTOS_DSCP_AF42 },
|
|
{ "af43", IPTOS_DSCP_AF43 },
|
|
{ "critical", IPTOS_PREC_CRITIC_ECP },
|
|
{ "cs0", IPTOS_DSCP_CS0 },
|
|
{ "cs1", IPTOS_DSCP_CS1 },
|
|
{ "cs2", IPTOS_DSCP_CS2 },
|
|
{ "cs3", IPTOS_DSCP_CS3 },
|
|
{ "cs4", IPTOS_DSCP_CS4 },
|
|
{ "cs5", IPTOS_DSCP_CS5 },
|
|
{ "cs6", IPTOS_DSCP_CS6 },
|
|
{ "cs7", IPTOS_DSCP_CS7 },
|
|
{ "ef", IPTOS_DSCP_EF },
|
|
{ "inetcontrol", IPTOS_PREC_INTERNETCONTROL },
|
|
{ "lowdelay", IPTOS_LOWDELAY },
|
|
{ "netcontrol", IPTOS_PREC_NETCONTROL },
|
|
{ "reliability", IPTOS_RELIABILITY },
|
|
{ "throughput", IPTOS_THROUGHPUT }
|
|
};
|
|
const struct keywords *p;
|
|
|
|
p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
|
|
sizeof(toswords[0]), kw_casecmp);
|
|
|
|
if (p) {
|
|
*val = p->k_val;
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
rt_tableid_max(void)
|
|
{
|
|
#ifdef __FreeBSD__
|
|
int fibs;
|
|
size_t l = sizeof(fibs);
|
|
|
|
if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
|
|
fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */
|
|
/*
|
|
* As the OpenBSD code only compares > and not >= we need to adjust
|
|
* here given we only accept values of 0..n and want to avoid #ifdefs
|
|
* in the grammar.
|
|
*/
|
|
return (fibs - 1);
|
|
#else
|
|
return (RT_TABLEID_MAX);
|
|
#endif
|
|
}
|