64b3b4d611
The crop/drop-ovl fragment scrub modes are not very useful and likely to confuse users into making poor choices. It's also a fairly large amount of complex code, so just remove the support altogether. Users who have 'scrub fragment crop|drop-ovl' in their pf configuration will be implicitly converted to 'scrub fragment reassemble'. Reviewed by: gnn, eri Relnotes: yes Differential Revision: https://reviews.freebsd.org/D3466
6174 lines
140 KiB
Plaintext
6174 lines
140 KiB
Plaintext
/* $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $ */
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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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#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 require_order = 1;
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static int default_statelock;
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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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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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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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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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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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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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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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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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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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int tbrsize;
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int qlimit;
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} queue_opts;
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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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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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struct codel_opts codel_opts;
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struct node_hfsc_opts hfsc_opts;
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struct node_fairq_opts fairq_opts;
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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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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;
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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;
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u_int8_t rt;
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u_int8_t pool_opts;
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sa_family_t af;
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struct pf_poolhashkey *key;
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} route;
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struct redirection {
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struct node_host *host;
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struct range rport;
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} *redirection;
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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_state;
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struct {
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u_int8_t log;
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u_int8_t logif;
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u_int8_t quick;
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} logquick;
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struct {
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int neg;
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char *name;
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} tagged;
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struct pf_poolhashkey *hashkey;
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struct node_queue *queue;
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struct node_queue_opt queue_options;
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struct node_queue_bw queue_bwspec;
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struct node_qassign qassign;
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struct filter_opts filter_opts;
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struct antispoof_opts antispoof_opts;
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struct queue_opts queue_opts;
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struct scrub_opts scrub_opts;
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struct table_opts table_opts;
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|
struct pool_opts pool_opts;
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struct node_hfsc_opts hfsc_opts;
|
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struct node_fairq_opts fairq_opts;
|
|
struct codel_opts codel_opts;
|
|
} v;
|
|
int lineno;
|
|
} YYSTYPE;
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|
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#define PPORT_RANGE 1
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#define PPORT_STAR 2
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int parseport(char *, struct range *r, int);
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|
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#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
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(!((addr).iflags & PFI_AFLAG_NOALIAS) || \
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!isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
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|
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%}
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%token PASS BLOCK SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
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%token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
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%token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
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|
%token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
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|
%token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
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|
%token REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
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|
%token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
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|
%token 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
|
|
%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
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|
%type <v.probability> probability
|
|
%type <v.i> no dir af fragcache optimizer
|
|
%type <v.i> sourcetrack flush unaryop statelock
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|
%type <v.b> action nataction natpasslog scrubaction
|
|
%type <v.b> flags flag blockspec
|
|
%type <v.range> portplain portstar portrange
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|
%type <v.hashkey> hashkey
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|
%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
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|
%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.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 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 {
|
|
if (pf->opts & PF_OPT_VERBOSE)
|
|
printf("%s = \"%s\"\n", $1, $3);
|
|
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;
|
|
|
|
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;
|
|
$$ = queue_opts;
|
|
}
|
|
;
|
|
|
|
queue_opts_l : queue_opts_l queue_opt
|
|
| queue_opt
|
|
;
|
|
|
|
queue_opt : BANDWIDTH bandwidth {
|
|
if (queue_opts.marker & QOM_BWSPEC) {
|
|
yyerror("bandwidth cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_BWSPEC;
|
|
queue_opts.queue_bwspec = $2;
|
|
}
|
|
| PRIORITY NUMBER {
|
|
if (queue_opts.marker & QOM_PRIORITY) {
|
|
yyerror("priority cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > 255) {
|
|
yyerror("priority out of range: max 255");
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_PRIORITY;
|
|
queue_opts.priority = $2;
|
|
}
|
|
| QLIMIT NUMBER {
|
|
if (queue_opts.marker & QOM_QLIMIT) {
|
|
yyerror("qlimit cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > 65535) {
|
|
yyerror("qlimit out of range: max 65535");
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_QLIMIT;
|
|
queue_opts.qlimit = $2;
|
|
}
|
|
| scheduler {
|
|
if (queue_opts.marker & QOM_SCHEDULER) {
|
|
yyerror("scheduler cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_SCHEDULER;
|
|
queue_opts.scheduler = $1;
|
|
}
|
|
| TBRSIZE NUMBER {
|
|
if (queue_opts.marker & QOM_TBRSIZE) {
|
|
yyerror("tbrsize cannot be respecified");
|
|
YYERROR;
|
|
}
|
|
if ($2 < 0 || $2 > 65535) {
|
|
yyerror("tbrsize too big: max 65535");
|
|
YYERROR;
|
|
}
|
|
queue_opts.marker |= QOM_TBRSIZE;
|
|
queue_opts.tbrsize = $2;
|
|
}
|
|
;
|
|
|
|
bandwidth : STRING {
|
|
double bps;
|
|
char *cp;
|
|
|
|
$$.bw_percent = 0;
|
|
|
|
bps = strtod($1, &cp);
|
|
if (cp != NULL) {
|
|
if (!strcmp(cp, "b"))
|
|
; /* nothing */
|
|
else if (!strcmp(cp, "Kb"))
|
|
bps *= 1000;
|
|
else if (!strcmp(cp, "Mb"))
|
|
bps *= 1000 * 1000;
|
|
else if (!strcmp(cp, "Gb"))
|
|
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_int32_t)bps;
|
|
}
|
|
| NUMBER {
|
|
if ($1 < 0 || $1 > UINT_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;
|
|
|
|
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 && r.rt != PF_FASTROUTE) {
|
|
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;
|
|
}
|
|
| 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
|
|
}
|
|
;
|
|
|
|
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; $$.b2 = $$.w = 0; }
|
|
| 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;
|
|
}
|
|
$$ = $1 + 1;
|
|
}
|
|
;
|
|
|
|
tos : STRING {
|
|
if (!strcmp($1, "lowdelay"))
|
|
$$ = IPTOS_LOWDELAY;
|
|
else if (!strcmp($1, "throughput"))
|
|
$$ = IPTOS_THROUGHPUT;
|
|
else if (!strcmp($1, "reliability"))
|
|
$$ = IPTOS_RELIABILITY;
|
|
else if ($1[0] == '0' && $1[1] == 'x')
|
|
$$ = strtoul($1, NULL, 16);
|
|
else
|
|
$$ = 0; /* flag bad argument */
|
|
if (!$$ || $$ > 255) {
|
|
yyerror("illegal tos value %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
| NUMBER {
|
|
$$ = $1;
|
|
if (!$$ || $$ > 255) {
|
|
yyerror("illegal tos value %s", $1);
|
|
YYERROR;
|
|
}
|
|
}
|
|
;
|
|
|
|
sourcetrack : SOURCETRACK { $$ = 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 host 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 = $1;
|
|
set_ipmask($$, 128);
|
|
$$->next = NULL;
|
|
$$->tail = $$;
|
|
}
|
|
| '(' STRING host ')' {
|
|
$$ = $3;
|
|
$$->ifname = $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;
|
|
$$.pool_opts = 0;
|
|
}
|
|
| FASTROUTE {
|
|
$$.host = NULL;
|
|
$$.rt = PF_FASTROUTE;
|
|
$$.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);
|
|
}
|
|
;
|
|
|
|
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;
|
|
|
|
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)) {
|
|
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},
|
|
{ "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},
|
|
{ "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
|
|
|
|
char *parsebuf;
|
|
int parseindex;
|
|
char pushback_buffer[MAXPUSHBACK];
|
|
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')
|
|
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;
|
|
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
|
|
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 grammer.
|
|
*/
|
|
return (fibs - 1);
|
|
#else
|
|
return (RT_TABLEID_MAX);
|
|
#endif
|
|
}
|