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c52ee6c23b
MFC after: 2 weeks.
1754 lines
44 KiB
C
1754 lines
44 KiB
C
/* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */
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/*
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* Copyright (c) 2001 Daniel Hartmeier
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* Copyright (c) 2002,2003 Henning Brauer
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/param.h>
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#include <sys/proc.h>
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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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.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 <err.h>
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#include <ifaddrs.h>
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#include <unistd.h>
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#include "pfctl_parser.h"
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#include "pfctl.h"
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void print_op (u_int8_t, const char *, const char *);
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void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int);
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void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
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void print_flags (u_int8_t);
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void print_fromto(struct pf_rule_addr *, pf_osfp_t,
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struct pf_rule_addr *, u_int8_t, u_int8_t, int, int);
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int ifa_skip_if(const char *filter, struct node_host *p);
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struct node_host *ifa_grouplookup(const char *, int);
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struct node_host *host_if(const char *, int);
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struct node_host *host_v4(const char *, int);
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struct node_host *host_v6(const char *, int);
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struct node_host *host_dns(const char *, int, int);
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const char *tcpflags = "FSRPAUEW";
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static const struct icmptypeent icmp_type[] = {
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{ "echoreq", ICMP_ECHO },
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{ "echorep", ICMP_ECHOREPLY },
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{ "unreach", ICMP_UNREACH },
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{ "squench", ICMP_SOURCEQUENCH },
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{ "redir", ICMP_REDIRECT },
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{ "althost", ICMP_ALTHOSTADDR },
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{ "routeradv", ICMP_ROUTERADVERT },
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{ "routersol", ICMP_ROUTERSOLICIT },
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{ "timex", ICMP_TIMXCEED },
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{ "paramprob", ICMP_PARAMPROB },
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{ "timereq", ICMP_TSTAMP },
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{ "timerep", ICMP_TSTAMPREPLY },
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{ "inforeq", ICMP_IREQ },
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{ "inforep", ICMP_IREQREPLY },
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{ "maskreq", ICMP_MASKREQ },
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{ "maskrep", ICMP_MASKREPLY },
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{ "trace", ICMP_TRACEROUTE },
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{ "dataconv", ICMP_DATACONVERR },
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{ "mobredir", ICMP_MOBILE_REDIRECT },
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{ "ipv6-where", ICMP_IPV6_WHEREAREYOU },
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{ "ipv6-here", ICMP_IPV6_IAMHERE },
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{ "mobregreq", ICMP_MOBILE_REGREQUEST },
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{ "mobregrep", ICMP_MOBILE_REGREPLY },
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{ "skip", ICMP_SKIP },
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{ "photuris", ICMP_PHOTURIS }
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};
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static const struct icmptypeent icmp6_type[] = {
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{ "unreach", ICMP6_DST_UNREACH },
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{ "toobig", ICMP6_PACKET_TOO_BIG },
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{ "timex", ICMP6_TIME_EXCEEDED },
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{ "paramprob", ICMP6_PARAM_PROB },
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{ "echoreq", ICMP6_ECHO_REQUEST },
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{ "echorep", ICMP6_ECHO_REPLY },
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{ "groupqry", ICMP6_MEMBERSHIP_QUERY },
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{ "listqry", MLD_LISTENER_QUERY },
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{ "grouprep", ICMP6_MEMBERSHIP_REPORT },
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{ "listenrep", MLD_LISTENER_REPORT },
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{ "groupterm", ICMP6_MEMBERSHIP_REDUCTION },
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{ "listendone", MLD_LISTENER_DONE },
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{ "routersol", ND_ROUTER_SOLICIT },
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{ "routeradv", ND_ROUTER_ADVERT },
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{ "neighbrsol", ND_NEIGHBOR_SOLICIT },
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{ "neighbradv", ND_NEIGHBOR_ADVERT },
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{ "redir", ND_REDIRECT },
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{ "routrrenum", ICMP6_ROUTER_RENUMBERING },
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{ "wrureq", ICMP6_WRUREQUEST },
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{ "wrurep", ICMP6_WRUREPLY },
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{ "fqdnreq", ICMP6_FQDN_QUERY },
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{ "fqdnrep", ICMP6_FQDN_REPLY },
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{ "niqry", ICMP6_NI_QUERY },
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{ "nirep", ICMP6_NI_REPLY },
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{ "mtraceresp", MLD_MTRACE_RESP },
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{ "mtrace", MLD_MTRACE }
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};
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static const struct icmpcodeent icmp_code[] = {
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{ "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET },
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{ "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST },
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{ "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL },
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{ "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT },
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{ "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG },
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{ "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL },
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{ "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN },
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{ "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN },
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{ "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED },
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{ "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB },
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{ "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB },
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{ "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET },
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{ "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST },
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{ "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB },
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{ "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE },
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{ "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF },
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{ "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET },
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{ "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST },
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{ "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET },
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{ "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST },
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{ "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
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{ "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
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{ "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS },
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{ "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS },
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{ "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
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{ "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
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{ "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
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{ "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX },
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{ "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED },
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{ "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED }
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};
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static const struct icmpcodeent icmp6_code[] = {
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{ "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
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{ "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
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{ "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
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{ "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
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{ "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
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{ "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
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{ "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
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{ "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
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{ "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
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{ "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
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{ "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
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{ "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
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};
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const struct pf_timeout pf_timeouts[] = {
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{ "tcp.first", PFTM_TCP_FIRST_PACKET },
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{ "tcp.opening", PFTM_TCP_OPENING },
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{ "tcp.established", PFTM_TCP_ESTABLISHED },
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{ "tcp.closing", PFTM_TCP_CLOSING },
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{ "tcp.finwait", PFTM_TCP_FIN_WAIT },
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{ "tcp.closed", PFTM_TCP_CLOSED },
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{ "tcp.tsdiff", PFTM_TS_DIFF },
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{ "udp.first", PFTM_UDP_FIRST_PACKET },
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{ "udp.single", PFTM_UDP_SINGLE },
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{ "udp.multiple", PFTM_UDP_MULTIPLE },
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{ "icmp.first", PFTM_ICMP_FIRST_PACKET },
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{ "icmp.error", PFTM_ICMP_ERROR_REPLY },
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{ "other.first", PFTM_OTHER_FIRST_PACKET },
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{ "other.single", PFTM_OTHER_SINGLE },
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{ "other.multiple", PFTM_OTHER_MULTIPLE },
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{ "frag", PFTM_FRAG },
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{ "interval", PFTM_INTERVAL },
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{ "adaptive.start", PFTM_ADAPTIVE_START },
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{ "adaptive.end", PFTM_ADAPTIVE_END },
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{ "src.track", PFTM_SRC_NODE },
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{ NULL, 0 }
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};
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const struct icmptypeent *
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geticmptypebynumber(u_int8_t type, sa_family_t af)
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{
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unsigned int i;
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if (af != AF_INET6) {
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for (i=0; i < nitems(icmp_type); i++) {
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if (type == icmp_type[i].type)
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return (&icmp_type[i]);
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}
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} else {
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for (i=0; i < nitems(icmp6_type); i++) {
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if (type == icmp6_type[i].type)
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return (&icmp6_type[i]);
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}
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}
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return (NULL);
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}
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const struct icmptypeent *
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geticmptypebyname(char *w, sa_family_t af)
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{
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unsigned int i;
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if (af != AF_INET6) {
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for (i=0; i < nitems(icmp_type); i++) {
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if (!strcmp(w, icmp_type[i].name))
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return (&icmp_type[i]);
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}
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} else {
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for (i=0; i < nitems(icmp6_type); i++) {
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if (!strcmp(w, icmp6_type[i].name))
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return (&icmp6_type[i]);
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}
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}
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return (NULL);
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}
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const struct icmpcodeent *
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geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
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{
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unsigned int i;
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if (af != AF_INET6) {
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for (i=0; i < nitems(icmp_code); i++) {
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if (type == icmp_code[i].type &&
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code == icmp_code[i].code)
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return (&icmp_code[i]);
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}
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} else {
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for (i=0; i < nitems(icmp6_code); i++) {
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if (type == icmp6_code[i].type &&
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code == icmp6_code[i].code)
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return (&icmp6_code[i]);
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}
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}
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return (NULL);
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}
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const struct icmpcodeent *
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geticmpcodebyname(u_long type, char *w, sa_family_t af)
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{
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unsigned int i;
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if (af != AF_INET6) {
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for (i=0; i < nitems(icmp_code); i++) {
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if (type == icmp_code[i].type &&
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!strcmp(w, icmp_code[i].name))
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return (&icmp_code[i]);
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}
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} else {
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for (i=0; i < nitems(icmp6_code); i++) {
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if (type == icmp6_code[i].type &&
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!strcmp(w, icmp6_code[i].name))
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return (&icmp6_code[i]);
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}
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}
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return (NULL);
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}
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void
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print_op(u_int8_t op, const char *a1, const char *a2)
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{
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if (op == PF_OP_IRG)
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printf(" %s >< %s", a1, a2);
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else if (op == PF_OP_XRG)
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printf(" %s <> %s", a1, a2);
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else if (op == PF_OP_EQ)
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printf(" = %s", a1);
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else if (op == PF_OP_NE)
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printf(" != %s", a1);
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else if (op == PF_OP_LT)
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printf(" < %s", a1);
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else if (op == PF_OP_LE)
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printf(" <= %s", a1);
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else if (op == PF_OP_GT)
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printf(" > %s", a1);
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else if (op == PF_OP_GE)
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printf(" >= %s", a1);
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else if (op == PF_OP_RRG)
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printf(" %s:%s", a1, a2);
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}
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void
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print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
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{
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char a1[6], a2[6];
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struct servent *s;
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if (!numeric)
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s = getservbyport(p1, proto);
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else
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s = NULL;
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p1 = ntohs(p1);
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p2 = ntohs(p2);
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snprintf(a1, sizeof(a1), "%u", p1);
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snprintf(a2, sizeof(a2), "%u", p2);
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printf(" port");
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if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
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print_op(op, s->s_name, a2);
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else
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print_op(op, a1, a2);
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}
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void
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print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
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{
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char a1[11], a2[11];
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snprintf(a1, sizeof(a1), "%u", u1);
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snprintf(a2, sizeof(a2), "%u", u2);
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printf(" %s", t);
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if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
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print_op(op, "unknown", a2);
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else
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print_op(op, a1, a2);
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}
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void
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print_flags(u_int8_t f)
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{
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int i;
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for (i = 0; tcpflags[i]; ++i)
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if (f & (1 << i))
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printf("%c", tcpflags[i]);
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}
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void
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print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
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sa_family_t af, u_int8_t proto, int verbose, int numeric)
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{
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char buf[PF_OSFP_LEN*3];
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if (src->addr.type == PF_ADDR_ADDRMASK &&
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dst->addr.type == PF_ADDR_ADDRMASK &&
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PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
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PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
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PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
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PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
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!src->neg && !dst->neg &&
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!src->port_op && !dst->port_op &&
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osfp == PF_OSFP_ANY)
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printf(" all");
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else {
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printf(" from ");
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if (src->neg)
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printf("! ");
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print_addr(&src->addr, af, verbose);
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if (src->port_op)
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print_port(src->port_op, src->port[0],
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src->port[1],
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proto == IPPROTO_TCP ? "tcp" : "udp",
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numeric);
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if (osfp != PF_OSFP_ANY)
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printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
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sizeof(buf)));
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printf(" to ");
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if (dst->neg)
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printf("! ");
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print_addr(&dst->addr, af, verbose);
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if (dst->port_op)
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print_port(dst->port_op, dst->port[0],
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dst->port[1],
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proto == IPPROTO_TCP ? "tcp" : "udp",
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numeric);
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}
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}
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void
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print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2,
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sa_family_t af, int id)
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{
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struct pf_pooladdr *pooladdr;
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if ((TAILQ_FIRST(&pool->list) != NULL) &&
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TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
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printf("{ ");
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TAILQ_FOREACH(pooladdr, &pool->list, entries){
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switch (id) {
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case PF_NAT:
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case PF_RDR:
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case PF_BINAT:
|
|
print_addr(&pooladdr->addr, af, 0);
|
|
break;
|
|
case PF_PASS:
|
|
if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
|
|
printf("%s", pooladdr->ifname);
|
|
else {
|
|
printf("(%s ", pooladdr->ifname);
|
|
print_addr(&pooladdr->addr, af, 0);
|
|
printf(")");
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (TAILQ_NEXT(pooladdr, entries) != NULL)
|
|
printf(", ");
|
|
else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
|
|
printf(" }");
|
|
}
|
|
switch (id) {
|
|
case PF_NAT:
|
|
if ((p1 != PF_NAT_PROXY_PORT_LOW ||
|
|
p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
|
|
if (p1 == p2)
|
|
printf(" port %u", p1);
|
|
else
|
|
printf(" port %u:%u", p1, p2);
|
|
}
|
|
break;
|
|
case PF_RDR:
|
|
if (p1) {
|
|
printf(" port %u", p1);
|
|
if (p2 && (p2 != p1))
|
|
printf(":%u", p2);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
switch (pool->opts & PF_POOL_TYPEMASK) {
|
|
case PF_POOL_NONE:
|
|
break;
|
|
case PF_POOL_BITMASK:
|
|
printf(" bitmask");
|
|
break;
|
|
case PF_POOL_RANDOM:
|
|
printf(" random");
|
|
break;
|
|
case PF_POOL_SRCHASH:
|
|
printf(" source-hash 0x%08x%08x%08x%08x",
|
|
pool->key.key32[0], pool->key.key32[1],
|
|
pool->key.key32[2], pool->key.key32[3]);
|
|
break;
|
|
case PF_POOL_ROUNDROBIN:
|
|
printf(" round-robin");
|
|
break;
|
|
}
|
|
if (pool->opts & PF_POOL_STICKYADDR)
|
|
printf(" sticky-address");
|
|
if (id == PF_NAT && p1 == 0 && p2 == 0)
|
|
printf(" static-port");
|
|
}
|
|
|
|
const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
|
|
const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
|
|
const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
|
|
const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
|
|
|
|
void
|
|
print_status(struct pf_status *s, int opts)
|
|
{
|
|
char statline[80], *running;
|
|
time_t runtime;
|
|
int i;
|
|
char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
|
|
static const char hex[] = "0123456789abcdef";
|
|
|
|
runtime = time(NULL) - s->since;
|
|
running = s->running ? "Enabled" : "Disabled";
|
|
|
|
if (s->since) {
|
|
unsigned int sec, min, hrs, day = runtime;
|
|
|
|
sec = day % 60;
|
|
day /= 60;
|
|
min = day % 60;
|
|
day /= 60;
|
|
hrs = day % 24;
|
|
day /= 24;
|
|
snprintf(statline, sizeof(statline),
|
|
"Status: %s for %u days %.2u:%.2u:%.2u",
|
|
running, day, hrs, min, sec);
|
|
} else
|
|
snprintf(statline, sizeof(statline), "Status: %s", running);
|
|
printf("%-44s", statline);
|
|
switch (s->debug) {
|
|
case PF_DEBUG_NONE:
|
|
printf("%15s\n\n", "Debug: None");
|
|
break;
|
|
case PF_DEBUG_URGENT:
|
|
printf("%15s\n\n", "Debug: Urgent");
|
|
break;
|
|
case PF_DEBUG_MISC:
|
|
printf("%15s\n\n", "Debug: Misc");
|
|
break;
|
|
case PF_DEBUG_NOISY:
|
|
printf("%15s\n\n", "Debug: Loud");
|
|
break;
|
|
}
|
|
|
|
if (opts & PF_OPT_VERBOSE) {
|
|
printf("Hostid: 0x%08x\n", ntohl(s->hostid));
|
|
|
|
for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
|
|
buf[i + i] = hex[s->pf_chksum[i] >> 4];
|
|
buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
|
|
}
|
|
buf[i + i] = '\0';
|
|
printf("Checksum: 0x%s\n\n", buf);
|
|
}
|
|
|
|
if (s->ifname[0] != 0) {
|
|
printf("Interface Stats for %-16s %5s %16s\n",
|
|
s->ifname, "IPv4", "IPv6");
|
|
printf(" %-25s %14llu %16llu\n", "Bytes In",
|
|
(unsigned long long)s->bcounters[0][0],
|
|
(unsigned long long)s->bcounters[1][0]);
|
|
printf(" %-25s %14llu %16llu\n", "Bytes Out",
|
|
(unsigned long long)s->bcounters[0][1],
|
|
(unsigned long long)s->bcounters[1][1]);
|
|
printf(" Packets In\n");
|
|
printf(" %-23s %14llu %16llu\n", "Passed",
|
|
(unsigned long long)s->pcounters[0][0][PF_PASS],
|
|
(unsigned long long)s->pcounters[1][0][PF_PASS]);
|
|
printf(" %-23s %14llu %16llu\n", "Blocked",
|
|
(unsigned long long)s->pcounters[0][0][PF_DROP],
|
|
(unsigned long long)s->pcounters[1][0][PF_DROP]);
|
|
printf(" Packets Out\n");
|
|
printf(" %-23s %14llu %16llu\n", "Passed",
|
|
(unsigned long long)s->pcounters[0][1][PF_PASS],
|
|
(unsigned long long)s->pcounters[1][1][PF_PASS]);
|
|
printf(" %-23s %14llu %16llu\n\n", "Blocked",
|
|
(unsigned long long)s->pcounters[0][1][PF_DROP],
|
|
(unsigned long long)s->pcounters[1][1][PF_DROP]);
|
|
}
|
|
printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
|
|
printf(" %-25s %14u %14s\n", "current entries", s->states, "");
|
|
for (i = 0; i < FCNT_MAX; i++) {
|
|
printf(" %-25s %14llu ", pf_fcounters[i],
|
|
(unsigned long long)s->fcounters[i]);
|
|
if (runtime > 0)
|
|
printf("%14.1f/s\n",
|
|
(double)s->fcounters[i] / (double)runtime);
|
|
else
|
|
printf("%14s\n", "");
|
|
}
|
|
if (opts & PF_OPT_VERBOSE) {
|
|
printf("Source Tracking Table\n");
|
|
printf(" %-25s %14u %14s\n", "current entries",
|
|
s->src_nodes, "");
|
|
for (i = 0; i < SCNT_MAX; i++) {
|
|
printf(" %-25s %14lld ", pf_scounters[i],
|
|
#ifdef __FreeBSD__
|
|
(long long)s->scounters[i]);
|
|
#else
|
|
s->scounters[i]);
|
|
#endif
|
|
if (runtime > 0)
|
|
printf("%14.1f/s\n",
|
|
(double)s->scounters[i] / (double)runtime);
|
|
else
|
|
printf("%14s\n", "");
|
|
}
|
|
}
|
|
printf("Counters\n");
|
|
for (i = 0; i < PFRES_MAX; i++) {
|
|
printf(" %-25s %14llu ", pf_reasons[i],
|
|
(unsigned long long)s->counters[i]);
|
|
if (runtime > 0)
|
|
printf("%14.1f/s\n",
|
|
(double)s->counters[i] / (double)runtime);
|
|
else
|
|
printf("%14s\n", "");
|
|
}
|
|
if (opts & PF_OPT_VERBOSE) {
|
|
printf("Limit Counters\n");
|
|
for (i = 0; i < LCNT_MAX; i++) {
|
|
printf(" %-25s %14lld ", pf_lcounters[i],
|
|
#ifdef __FreeBSD__
|
|
(unsigned long long)s->lcounters[i]);
|
|
#else
|
|
s->lcounters[i]);
|
|
#endif
|
|
if (runtime > 0)
|
|
printf("%14.1f/s\n",
|
|
(double)s->lcounters[i] / (double)runtime);
|
|
else
|
|
printf("%14s\n", "");
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
print_src_node(struct pf_src_node *sn, int opts)
|
|
{
|
|
struct pf_addr_wrap aw;
|
|
int min, sec;
|
|
|
|
memset(&aw, 0, sizeof(aw));
|
|
if (sn->af == AF_INET)
|
|
aw.v.a.mask.addr32[0] = 0xffffffff;
|
|
else
|
|
memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
|
|
|
|
aw.v.a.addr = sn->addr;
|
|
print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
|
|
printf(" -> ");
|
|
aw.v.a.addr = sn->raddr;
|
|
print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
|
|
printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
|
|
sn->conn, sn->conn_rate.count / 1000,
|
|
(sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
|
|
if (opts & PF_OPT_VERBOSE) {
|
|
sec = sn->creation % 60;
|
|
sn->creation /= 60;
|
|
min = sn->creation % 60;
|
|
sn->creation /= 60;
|
|
printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec);
|
|
if (sn->states == 0) {
|
|
sec = sn->expire % 60;
|
|
sn->expire /= 60;
|
|
min = sn->expire % 60;
|
|
sn->expire /= 60;
|
|
printf(", expires in %.2u:%.2u:%.2u",
|
|
sn->expire, min, sec);
|
|
}
|
|
printf(", %llu pkts, %llu bytes",
|
|
#ifdef __FreeBSD__
|
|
(unsigned long long)(sn->packets[0] + sn->packets[1]),
|
|
(unsigned long long)(sn->bytes[0] + sn->bytes[1]));
|
|
#else
|
|
sn->packets[0] + sn->packets[1],
|
|
sn->bytes[0] + sn->bytes[1]);
|
|
#endif
|
|
switch (sn->ruletype) {
|
|
case PF_NAT:
|
|
if (sn->rule.nr != -1)
|
|
printf(", nat rule %u", sn->rule.nr);
|
|
break;
|
|
case PF_RDR:
|
|
if (sn->rule.nr != -1)
|
|
printf(", rdr rule %u", sn->rule.nr);
|
|
break;
|
|
case PF_PASS:
|
|
if (sn->rule.nr != -1)
|
|
printf(", filter rule %u", sn->rule.nr);
|
|
break;
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
void
|
|
print_rule(struct pf_rule *r, const char *anchor_call, int verbose, int numeric)
|
|
{
|
|
static const char *actiontypes[] = { "pass", "block", "scrub",
|
|
"no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr" };
|
|
static const char *anchortypes[] = { "anchor", "anchor", "anchor",
|
|
"anchor", "nat-anchor", "nat-anchor", "binat-anchor",
|
|
"binat-anchor", "rdr-anchor", "rdr-anchor" };
|
|
int i, opts;
|
|
|
|
if (verbose)
|
|
printf("@%d ", r->nr);
|
|
if (r->action > PF_NORDR)
|
|
printf("action(%d)", r->action);
|
|
else if (anchor_call[0]) {
|
|
if (anchor_call[0] == '_') {
|
|
printf("%s", anchortypes[r->action]);
|
|
} else
|
|
printf("%s \"%s\"", anchortypes[r->action],
|
|
anchor_call);
|
|
} else {
|
|
printf("%s", actiontypes[r->action]);
|
|
if (r->natpass)
|
|
printf(" pass");
|
|
}
|
|
if (r->action == PF_DROP) {
|
|
if (r->rule_flag & PFRULE_RETURN)
|
|
printf(" return");
|
|
else if (r->rule_flag & PFRULE_RETURNRST) {
|
|
if (!r->return_ttl)
|
|
printf(" return-rst");
|
|
else
|
|
printf(" return-rst(ttl %d)", r->return_ttl);
|
|
} else if (r->rule_flag & PFRULE_RETURNICMP) {
|
|
const struct icmpcodeent *ic, *ic6;
|
|
|
|
ic = geticmpcodebynumber(r->return_icmp >> 8,
|
|
r->return_icmp & 255, AF_INET);
|
|
ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
|
|
r->return_icmp6 & 255, AF_INET6);
|
|
|
|
switch (r->af) {
|
|
case AF_INET:
|
|
printf(" return-icmp");
|
|
if (ic == NULL)
|
|
printf("(%u)", r->return_icmp & 255);
|
|
else
|
|
printf("(%s)", ic->name);
|
|
break;
|
|
case AF_INET6:
|
|
printf(" return-icmp6");
|
|
if (ic6 == NULL)
|
|
printf("(%u)", r->return_icmp6 & 255);
|
|
else
|
|
printf("(%s)", ic6->name);
|
|
break;
|
|
default:
|
|
printf(" return-icmp");
|
|
if (ic == NULL)
|
|
printf("(%u, ", r->return_icmp & 255);
|
|
else
|
|
printf("(%s, ", ic->name);
|
|
if (ic6 == NULL)
|
|
printf("%u)", r->return_icmp6 & 255);
|
|
else
|
|
printf("%s)", ic6->name);
|
|
break;
|
|
}
|
|
} else
|
|
printf(" drop");
|
|
}
|
|
if (r->direction == PF_IN)
|
|
printf(" in");
|
|
else if (r->direction == PF_OUT)
|
|
printf(" out");
|
|
if (r->log) {
|
|
printf(" log");
|
|
if (r->log & ~PF_LOG || r->logif) {
|
|
int count = 0;
|
|
|
|
printf(" (");
|
|
if (r->log & PF_LOG_ALL)
|
|
printf("%sall", count++ ? ", " : "");
|
|
if (r->log & PF_LOG_SOCKET_LOOKUP)
|
|
printf("%suser", count++ ? ", " : "");
|
|
if (r->logif)
|
|
printf("%sto pflog%u", count++ ? ", " : "",
|
|
r->logif);
|
|
printf(")");
|
|
}
|
|
}
|
|
if (r->quick)
|
|
printf(" quick");
|
|
if (r->ifname[0]) {
|
|
if (r->ifnot)
|
|
printf(" on ! %s", r->ifname);
|
|
else
|
|
printf(" on %s", r->ifname);
|
|
}
|
|
if (r->rt) {
|
|
if (r->rt == PF_ROUTETO)
|
|
printf(" route-to");
|
|
else if (r->rt == PF_REPLYTO)
|
|
printf(" reply-to");
|
|
else if (r->rt == PF_DUPTO)
|
|
printf(" dup-to");
|
|
else if (r->rt == PF_FASTROUTE)
|
|
printf(" fastroute");
|
|
if (r->rt != PF_FASTROUTE) {
|
|
printf(" ");
|
|
print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
|
|
}
|
|
}
|
|
if (r->af) {
|
|
if (r->af == AF_INET)
|
|
printf(" inet");
|
|
else
|
|
printf(" inet6");
|
|
}
|
|
if (r->proto) {
|
|
struct protoent *p;
|
|
|
|
if ((p = getprotobynumber(r->proto)) != NULL)
|
|
printf(" proto %s", p->p_name);
|
|
else
|
|
printf(" proto %u", r->proto);
|
|
}
|
|
print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
|
|
verbose, numeric);
|
|
if (r->uid.op)
|
|
print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
|
|
UID_MAX);
|
|
if (r->gid.op)
|
|
print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
|
|
GID_MAX);
|
|
if (r->flags || r->flagset) {
|
|
printf(" flags ");
|
|
print_flags(r->flags);
|
|
printf("/");
|
|
print_flags(r->flagset);
|
|
} else if (r->action == PF_PASS &&
|
|
(!r->proto || r->proto == IPPROTO_TCP) &&
|
|
!(r->rule_flag & PFRULE_FRAGMENT) &&
|
|
!anchor_call[0] && r->keep_state)
|
|
printf(" flags any");
|
|
if (r->type) {
|
|
const struct icmptypeent *it;
|
|
|
|
it = geticmptypebynumber(r->type-1, r->af);
|
|
if (r->af != AF_INET6)
|
|
printf(" icmp-type");
|
|
else
|
|
printf(" icmp6-type");
|
|
if (it != NULL)
|
|
printf(" %s", it->name);
|
|
else
|
|
printf(" %u", r->type-1);
|
|
if (r->code) {
|
|
const struct icmpcodeent *ic;
|
|
|
|
ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
|
|
if (ic != NULL)
|
|
printf(" code %s", ic->name);
|
|
else
|
|
printf(" code %u", r->code-1);
|
|
}
|
|
}
|
|
if (r->tos)
|
|
printf(" tos 0x%2.2x", r->tos);
|
|
if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
|
|
printf(" no state");
|
|
else if (r->keep_state == PF_STATE_NORMAL)
|
|
printf(" keep state");
|
|
else if (r->keep_state == PF_STATE_MODULATE)
|
|
printf(" modulate state");
|
|
else if (r->keep_state == PF_STATE_SYNPROXY)
|
|
printf(" synproxy state");
|
|
if (r->prob) {
|
|
char buf[20];
|
|
|
|
snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
|
|
for (i = strlen(buf)-1; i > 0; i--) {
|
|
if (buf[i] == '0')
|
|
buf[i] = '\0';
|
|
else {
|
|
if (buf[i] == '.')
|
|
buf[i] = '\0';
|
|
break;
|
|
}
|
|
}
|
|
printf(" probability %s%%", buf);
|
|
}
|
|
opts = 0;
|
|
if (r->max_states || r->max_src_nodes || r->max_src_states)
|
|
opts = 1;
|
|
if (r->rule_flag & PFRULE_NOSYNC)
|
|
opts = 1;
|
|
if (r->rule_flag & PFRULE_SRCTRACK)
|
|
opts = 1;
|
|
if (r->rule_flag & PFRULE_IFBOUND)
|
|
opts = 1;
|
|
if (r->rule_flag & PFRULE_STATESLOPPY)
|
|
opts = 1;
|
|
for (i = 0; !opts && i < PFTM_MAX; ++i)
|
|
if (r->timeout[i])
|
|
opts = 1;
|
|
if (opts) {
|
|
printf(" (");
|
|
if (r->max_states) {
|
|
printf("max %u", r->max_states);
|
|
opts = 0;
|
|
}
|
|
if (r->rule_flag & PFRULE_NOSYNC) {
|
|
if (!opts)
|
|
printf(", ");
|
|
printf("no-sync");
|
|
opts = 0;
|
|
}
|
|
if (r->rule_flag & PFRULE_SRCTRACK) {
|
|
if (!opts)
|
|
printf(", ");
|
|
printf("source-track");
|
|
if (r->rule_flag & PFRULE_RULESRCTRACK)
|
|
printf(" rule");
|
|
else
|
|
printf(" global");
|
|
opts = 0;
|
|
}
|
|
if (r->max_src_states) {
|
|
if (!opts)
|
|
printf(", ");
|
|
printf("max-src-states %u", r->max_src_states);
|
|
opts = 0;
|
|
}
|
|
if (r->max_src_conn) {
|
|
if (!opts)
|
|
printf(", ");
|
|
printf("max-src-conn %u", r->max_src_conn);
|
|
opts = 0;
|
|
}
|
|
if (r->max_src_conn_rate.limit) {
|
|
if (!opts)
|
|
printf(", ");
|
|
printf("max-src-conn-rate %u/%u",
|
|
r->max_src_conn_rate.limit,
|
|
r->max_src_conn_rate.seconds);
|
|
opts = 0;
|
|
}
|
|
if (r->max_src_nodes) {
|
|
if (!opts)
|
|
printf(", ");
|
|
printf("max-src-nodes %u", r->max_src_nodes);
|
|
opts = 0;
|
|
}
|
|
if (r->overload_tblname[0]) {
|
|
if (!opts)
|
|
printf(", ");
|
|
printf("overload <%s>", r->overload_tblname);
|
|
if (r->flush)
|
|
printf(" flush");
|
|
if (r->flush & PF_FLUSH_GLOBAL)
|
|
printf(" global");
|
|
}
|
|
if (r->rule_flag & PFRULE_IFBOUND) {
|
|
if (!opts)
|
|
printf(", ");
|
|
printf("if-bound");
|
|
opts = 0;
|
|
}
|
|
if (r->rule_flag & PFRULE_STATESLOPPY) {
|
|
if (!opts)
|
|
printf(", ");
|
|
printf("sloppy");
|
|
opts = 0;
|
|
}
|
|
for (i = 0; i < PFTM_MAX; ++i)
|
|
if (r->timeout[i]) {
|
|
int j;
|
|
|
|
if (!opts)
|
|
printf(", ");
|
|
opts = 0;
|
|
for (j = 0; pf_timeouts[j].name != NULL;
|
|
++j)
|
|
if (pf_timeouts[j].timeout == i)
|
|
break;
|
|
printf("%s %u", pf_timeouts[j].name == NULL ?
|
|
"inv.timeout" : pf_timeouts[j].name,
|
|
r->timeout[i]);
|
|
}
|
|
printf(")");
|
|
}
|
|
if (r->rule_flag & PFRULE_FRAGMENT)
|
|
printf(" fragment");
|
|
if (r->rule_flag & PFRULE_NODF)
|
|
printf(" no-df");
|
|
if (r->rule_flag & PFRULE_RANDOMID)
|
|
printf(" random-id");
|
|
if (r->min_ttl)
|
|
printf(" min-ttl %d", r->min_ttl);
|
|
if (r->max_mss)
|
|
printf(" max-mss %d", r->max_mss);
|
|
if (r->rule_flag & PFRULE_SET_TOS)
|
|
printf(" set-tos 0x%2.2x", r->set_tos);
|
|
if (r->allow_opts)
|
|
printf(" allow-opts");
|
|
if (r->action == PF_SCRUB) {
|
|
if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
|
|
printf(" reassemble tcp");
|
|
|
|
printf(" fragment reassemble");
|
|
}
|
|
if (r->label[0])
|
|
printf(" label \"%s\"", r->label);
|
|
if (r->qname[0] && r->pqname[0])
|
|
printf(" queue(%s, %s)", r->qname, r->pqname);
|
|
else if (r->qname[0])
|
|
printf(" queue %s", r->qname);
|
|
if (r->tagname[0])
|
|
printf(" tag %s", r->tagname);
|
|
if (r->match_tagname[0]) {
|
|
if (r->match_tag_not)
|
|
printf(" !");
|
|
printf(" tagged %s", r->match_tagname);
|
|
}
|
|
if (r->rtableid != -1)
|
|
printf(" rtable %u", r->rtableid);
|
|
if (r->divert.port) {
|
|
#ifdef __FreeBSD__
|
|
printf(" divert-to %u", ntohs(r->divert.port));
|
|
#else
|
|
if (PF_AZERO(&r->divert.addr, r->af)) {
|
|
printf(" divert-reply");
|
|
} else {
|
|
/* XXX cut&paste from print_addr */
|
|
char buf[48];
|
|
|
|
printf(" divert-to ");
|
|
if (inet_ntop(r->af, &r->divert.addr, buf,
|
|
sizeof(buf)) == NULL)
|
|
printf("?");
|
|
else
|
|
printf("%s", buf);
|
|
printf(" port %u", ntohs(r->divert.port));
|
|
}
|
|
#endif
|
|
}
|
|
if (!anchor_call[0] && (r->action == PF_NAT ||
|
|
r->action == PF_BINAT || r->action == PF_RDR)) {
|
|
printf(" -> ");
|
|
print_pool(&r->rpool, r->rpool.proxy_port[0],
|
|
r->rpool.proxy_port[1], r->af, r->action);
|
|
}
|
|
}
|
|
|
|
void
|
|
print_tabledef(const char *name, int flags, int addrs,
|
|
struct node_tinithead *nodes)
|
|
{
|
|
struct node_tinit *ti, *nti;
|
|
struct node_host *h;
|
|
|
|
printf("table <%s>", name);
|
|
if (flags & PFR_TFLAG_CONST)
|
|
printf(" const");
|
|
if (flags & PFR_TFLAG_PERSIST)
|
|
printf(" persist");
|
|
if (flags & PFR_TFLAG_COUNTERS)
|
|
printf(" counters");
|
|
SIMPLEQ_FOREACH(ti, nodes, entries) {
|
|
if (ti->file) {
|
|
printf(" file \"%s\"", ti->file);
|
|
continue;
|
|
}
|
|
printf(" {");
|
|
for (;;) {
|
|
for (h = ti->host; h != NULL; h = h->next) {
|
|
printf(h->not ? " !" : " ");
|
|
print_addr(&h->addr, h->af, 0);
|
|
}
|
|
nti = SIMPLEQ_NEXT(ti, entries);
|
|
if (nti != NULL && nti->file == NULL)
|
|
ti = nti; /* merge lists */
|
|
else
|
|
break;
|
|
}
|
|
printf(" }");
|
|
}
|
|
if (addrs && SIMPLEQ_EMPTY(nodes))
|
|
printf(" { }");
|
|
printf("\n");
|
|
}
|
|
|
|
int
|
|
parse_flags(char *s)
|
|
{
|
|
char *p, *q;
|
|
u_int8_t f = 0;
|
|
|
|
for (p = s; *p; p++) {
|
|
if ((q = strchr(tcpflags, *p)) == NULL)
|
|
return -1;
|
|
else
|
|
f |= 1 << (q - tcpflags);
|
|
}
|
|
return (f ? f : PF_TH_ALL);
|
|
}
|
|
|
|
void
|
|
set_ipmask(struct node_host *h, u_int8_t b)
|
|
{
|
|
struct pf_addr *m, *n;
|
|
int i, j = 0;
|
|
|
|
m = &h->addr.v.a.mask;
|
|
memset(m, 0, sizeof(*m));
|
|
|
|
while (b >= 32) {
|
|
m->addr32[j++] = 0xffffffff;
|
|
b -= 32;
|
|
}
|
|
for (i = 31; i > 31-b; --i)
|
|
m->addr32[j] |= (1 << i);
|
|
if (b)
|
|
m->addr32[j] = htonl(m->addr32[j]);
|
|
|
|
/* Mask off bits of the address that will never be used. */
|
|
n = &h->addr.v.a.addr;
|
|
if (h->addr.type == PF_ADDR_ADDRMASK)
|
|
for (i = 0; i < 4; i++)
|
|
n->addr32[i] = n->addr32[i] & m->addr32[i];
|
|
}
|
|
|
|
int
|
|
check_netmask(struct node_host *h, sa_family_t af)
|
|
{
|
|
struct node_host *n = NULL;
|
|
struct pf_addr *m;
|
|
|
|
for (n = h; n != NULL; n = n->next) {
|
|
if (h->addr.type == PF_ADDR_TABLE)
|
|
continue;
|
|
m = &h->addr.v.a.mask;
|
|
/* fix up netmask for dynaddr */
|
|
if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL &&
|
|
unmask(m, AF_INET6) > 32)
|
|
set_ipmask(n, 32);
|
|
/* netmasks > 32 bit are invalid on v4 */
|
|
if (af == AF_INET &&
|
|
(m->addr32[1] || m->addr32[2] || m->addr32[3])) {
|
|
fprintf(stderr, "netmask %u invalid for IPv4 address\n",
|
|
unmask(m, AF_INET6));
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/* interface lookup routines */
|
|
|
|
struct node_host *iftab;
|
|
|
|
void
|
|
ifa_load(void)
|
|
{
|
|
struct ifaddrs *ifap, *ifa;
|
|
struct node_host *n = NULL, *h = NULL;
|
|
|
|
if (getifaddrs(&ifap) < 0)
|
|
err(1, "getifaddrs");
|
|
|
|
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
|
if (!(ifa->ifa_addr->sa_family == AF_INET ||
|
|
ifa->ifa_addr->sa_family == AF_INET6 ||
|
|
ifa->ifa_addr->sa_family == AF_LINK))
|
|
continue;
|
|
n = calloc(1, sizeof(struct node_host));
|
|
if (n == NULL)
|
|
err(1, "address: calloc");
|
|
n->af = ifa->ifa_addr->sa_family;
|
|
n->ifa_flags = ifa->ifa_flags;
|
|
#ifdef __KAME__
|
|
if (n->af == AF_INET6 &&
|
|
IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
|
|
ifa->ifa_addr)->sin6_addr) &&
|
|
((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
|
|
0) {
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
|
|
sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
|
|
sin6->sin6_addr.s6_addr[3];
|
|
sin6->sin6_addr.s6_addr[2] = 0;
|
|
sin6->sin6_addr.s6_addr[3] = 0;
|
|
}
|
|
#endif
|
|
n->ifindex = 0;
|
|
if (n->af == AF_INET) {
|
|
memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
|
|
ifa->ifa_addr)->sin_addr.s_addr,
|
|
sizeof(struct in_addr));
|
|
memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
|
|
ifa->ifa_netmask)->sin_addr.s_addr,
|
|
sizeof(struct in_addr));
|
|
if (ifa->ifa_broadaddr != NULL)
|
|
memcpy(&n->bcast, &((struct sockaddr_in *)
|
|
ifa->ifa_broadaddr)->sin_addr.s_addr,
|
|
sizeof(struct in_addr));
|
|
if (ifa->ifa_dstaddr != NULL)
|
|
memcpy(&n->peer, &((struct sockaddr_in *)
|
|
ifa->ifa_dstaddr)->sin_addr.s_addr,
|
|
sizeof(struct in_addr));
|
|
} else if (n->af == AF_INET6) {
|
|
memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
|
|
ifa->ifa_addr)->sin6_addr.s6_addr,
|
|
sizeof(struct in6_addr));
|
|
memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
|
|
ifa->ifa_netmask)->sin6_addr.s6_addr,
|
|
sizeof(struct in6_addr));
|
|
if (ifa->ifa_broadaddr != NULL)
|
|
memcpy(&n->bcast, &((struct sockaddr_in6 *)
|
|
ifa->ifa_broadaddr)->sin6_addr.s6_addr,
|
|
sizeof(struct in6_addr));
|
|
if (ifa->ifa_dstaddr != NULL)
|
|
memcpy(&n->peer, &((struct sockaddr_in6 *)
|
|
ifa->ifa_dstaddr)->sin6_addr.s6_addr,
|
|
sizeof(struct in6_addr));
|
|
n->ifindex = ((struct sockaddr_in6 *)
|
|
ifa->ifa_addr)->sin6_scope_id;
|
|
}
|
|
if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
|
|
err(1, "ifa_load: strdup");
|
|
n->next = NULL;
|
|
n->tail = n;
|
|
if (h == NULL)
|
|
h = n;
|
|
else {
|
|
h->tail->next = n;
|
|
h->tail = n;
|
|
}
|
|
}
|
|
|
|
iftab = h;
|
|
freeifaddrs(ifap);
|
|
}
|
|
|
|
int
|
|
get_socket_domain(void)
|
|
{
|
|
int sdom;
|
|
|
|
sdom = AF_UNSPEC;
|
|
#ifdef WITH_INET6
|
|
if (sdom == AF_UNSPEC && feature_present("inet6"))
|
|
sdom = AF_INET6;
|
|
#endif
|
|
#ifdef WITH_INET
|
|
if (sdom == AF_UNSPEC && feature_present("inet"))
|
|
sdom = AF_INET;
|
|
#endif
|
|
if (sdom == AF_UNSPEC)
|
|
sdom = AF_LINK;
|
|
|
|
return (sdom);
|
|
}
|
|
|
|
struct node_host *
|
|
ifa_exists(const char *ifa_name)
|
|
{
|
|
struct node_host *n;
|
|
struct ifgroupreq ifgr;
|
|
int s;
|
|
|
|
if (iftab == NULL)
|
|
ifa_load();
|
|
|
|
/* check wether this is a group */
|
|
if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
|
|
err(1, "socket");
|
|
bzero(&ifgr, sizeof(ifgr));
|
|
strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
|
|
if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) {
|
|
/* fake a node_host */
|
|
if ((n = calloc(1, sizeof(*n))) == NULL)
|
|
err(1, "calloc");
|
|
if ((n->ifname = strdup(ifa_name)) == NULL)
|
|
err(1, "strdup");
|
|
close(s);
|
|
return (n);
|
|
}
|
|
close(s);
|
|
|
|
for (n = iftab; n; n = n->next) {
|
|
if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
|
|
return (n);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
struct node_host *
|
|
ifa_grouplookup(const char *ifa_name, int flags)
|
|
{
|
|
struct ifg_req *ifg;
|
|
struct ifgroupreq ifgr;
|
|
int s, len;
|
|
struct node_host *n, *h = NULL;
|
|
|
|
if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
|
|
err(1, "socket");
|
|
bzero(&ifgr, sizeof(ifgr));
|
|
strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
|
|
if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) {
|
|
close(s);
|
|
return (NULL);
|
|
}
|
|
|
|
len = ifgr.ifgr_len;
|
|
if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
|
|
err(1, "calloc");
|
|
if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
|
|
err(1, "SIOCGIFGMEMB");
|
|
|
|
for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
|
|
ifg++) {
|
|
len -= sizeof(struct ifg_req);
|
|
if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
|
|
continue;
|
|
if (h == NULL)
|
|
h = n;
|
|
else {
|
|
h->tail->next = n;
|
|
h->tail = n->tail;
|
|
}
|
|
}
|
|
free(ifgr.ifgr_groups);
|
|
close(s);
|
|
|
|
return (h);
|
|
}
|
|
|
|
struct node_host *
|
|
ifa_lookup(const char *ifa_name, int flags)
|
|
{
|
|
struct node_host *p = NULL, *h = NULL, *n = NULL;
|
|
int got4 = 0, got6 = 0;
|
|
const char *last_if = NULL;
|
|
|
|
if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
|
|
return (h);
|
|
|
|
if (!strncmp(ifa_name, "self", IFNAMSIZ))
|
|
ifa_name = NULL;
|
|
|
|
if (iftab == NULL)
|
|
ifa_load();
|
|
|
|
for (p = iftab; p; p = p->next) {
|
|
if (ifa_skip_if(ifa_name, p))
|
|
continue;
|
|
if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
|
|
continue;
|
|
if ((flags & PFI_AFLAG_BROADCAST) &&
|
|
!(p->ifa_flags & IFF_BROADCAST))
|
|
continue;
|
|
if ((flags & PFI_AFLAG_PEER) &&
|
|
!(p->ifa_flags & IFF_POINTOPOINT))
|
|
continue;
|
|
if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
|
|
continue;
|
|
if (last_if == NULL || strcmp(last_if, p->ifname))
|
|
got4 = got6 = 0;
|
|
last_if = p->ifname;
|
|
if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
|
|
continue;
|
|
if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
|
|
continue;
|
|
if (p->af == AF_INET)
|
|
got4 = 1;
|
|
else
|
|
got6 = 1;
|
|
n = calloc(1, sizeof(struct node_host));
|
|
if (n == NULL)
|
|
err(1, "address: calloc");
|
|
n->af = p->af;
|
|
if (flags & PFI_AFLAG_BROADCAST)
|
|
memcpy(&n->addr.v.a.addr, &p->bcast,
|
|
sizeof(struct pf_addr));
|
|
else if (flags & PFI_AFLAG_PEER)
|
|
memcpy(&n->addr.v.a.addr, &p->peer,
|
|
sizeof(struct pf_addr));
|
|
else
|
|
memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
|
|
sizeof(struct pf_addr));
|
|
if (flags & PFI_AFLAG_NETWORK)
|
|
set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
|
|
else {
|
|
if (n->af == AF_INET) {
|
|
if (p->ifa_flags & IFF_LOOPBACK &&
|
|
p->ifa_flags & IFF_LINK1)
|
|
memcpy(&n->addr.v.a.mask,
|
|
&p->addr.v.a.mask,
|
|
sizeof(struct pf_addr));
|
|
else
|
|
set_ipmask(n, 32);
|
|
} else
|
|
set_ipmask(n, 128);
|
|
}
|
|
n->ifindex = p->ifindex;
|
|
|
|
n->next = NULL;
|
|
n->tail = n;
|
|
if (h == NULL)
|
|
h = n;
|
|
else {
|
|
h->tail->next = n;
|
|
h->tail = n;
|
|
}
|
|
}
|
|
return (h);
|
|
}
|
|
|
|
int
|
|
ifa_skip_if(const char *filter, struct node_host *p)
|
|
{
|
|
int n;
|
|
|
|
if (p->af != AF_INET && p->af != AF_INET6)
|
|
return (1);
|
|
if (filter == NULL || !*filter)
|
|
return (0);
|
|
if (!strcmp(p->ifname, filter))
|
|
return (0); /* exact match */
|
|
n = strlen(filter);
|
|
if (n < 1 || n >= IFNAMSIZ)
|
|
return (1); /* sanity check */
|
|
if (filter[n-1] >= '0' && filter[n-1] <= '9')
|
|
return (1); /* only do exact match in that case */
|
|
if (strncmp(p->ifname, filter, n))
|
|
return (1); /* prefix doesn't match */
|
|
return (p->ifname[n] < '0' || p->ifname[n] > '9');
|
|
}
|
|
|
|
|
|
struct node_host *
|
|
host(const char *s)
|
|
{
|
|
struct node_host *h = NULL;
|
|
int mask, v4mask, v6mask, cont = 1;
|
|
char *p, *q, *ps;
|
|
|
|
if ((p = strrchr(s, '/')) != NULL) {
|
|
mask = strtol(p+1, &q, 0);
|
|
if (!q || *q || mask > 128 || q == (p+1)) {
|
|
fprintf(stderr, "invalid netmask '%s'\n", p);
|
|
return (NULL);
|
|
}
|
|
if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
|
|
err(1, "host: malloc");
|
|
strlcpy(ps, s, strlen(s) - strlen(p) + 1);
|
|
v4mask = v6mask = mask;
|
|
} else {
|
|
if ((ps = strdup(s)) == NULL)
|
|
err(1, "host: strdup");
|
|
v4mask = 32;
|
|
v6mask = 128;
|
|
mask = -1;
|
|
}
|
|
|
|
/* interface with this name exists? */
|
|
if (cont && (h = host_if(ps, mask)) != NULL)
|
|
cont = 0;
|
|
|
|
/* IPv4 address? */
|
|
if (cont && (h = host_v4(s, mask)) != NULL)
|
|
cont = 0;
|
|
|
|
/* IPv6 address? */
|
|
if (cont && (h = host_v6(ps, v6mask)) != NULL)
|
|
cont = 0;
|
|
|
|
/* dns lookup */
|
|
if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
|
|
cont = 0;
|
|
free(ps);
|
|
|
|
if (h == NULL || cont == 1) {
|
|
fprintf(stderr, "no IP address found for %s\n", s);
|
|
return (NULL);
|
|
}
|
|
return (h);
|
|
}
|
|
|
|
struct node_host *
|
|
host_if(const char *s, int mask)
|
|
{
|
|
struct node_host *n, *h = NULL;
|
|
char *p, *ps;
|
|
int flags = 0;
|
|
|
|
if ((ps = strdup(s)) == NULL)
|
|
err(1, "host_if: strdup");
|
|
while ((p = strrchr(ps, ':')) != 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 {
|
|
free(ps);
|
|
return (NULL);
|
|
}
|
|
*p = '\0';
|
|
}
|
|
if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
|
|
fprintf(stderr, "illegal combination of interface modifiers\n");
|
|
free(ps);
|
|
return (NULL);
|
|
}
|
|
if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
|
|
fprintf(stderr, "network or broadcast lookup, but "
|
|
"extra netmask given\n");
|
|
free(ps);
|
|
return (NULL);
|
|
}
|
|
if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
|
|
/* interface with this name exists */
|
|
h = ifa_lookup(ps, flags);
|
|
for (n = h; n != NULL && mask > -1; n = n->next)
|
|
set_ipmask(n, mask);
|
|
}
|
|
|
|
free(ps);
|
|
return (h);
|
|
}
|
|
|
|
struct node_host *
|
|
host_v4(const char *s, int mask)
|
|
{
|
|
struct node_host *h = NULL;
|
|
struct in_addr ina;
|
|
int bits = 32;
|
|
|
|
memset(&ina, 0, sizeof(struct in_addr));
|
|
if (strrchr(s, '/') != NULL) {
|
|
if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
|
|
return (NULL);
|
|
} else {
|
|
if (inet_pton(AF_INET, s, &ina) != 1)
|
|
return (NULL);
|
|
}
|
|
|
|
h = calloc(1, sizeof(struct node_host));
|
|
if (h == NULL)
|
|
err(1, "address: calloc");
|
|
h->ifname = NULL;
|
|
h->af = AF_INET;
|
|
h->addr.v.a.addr.addr32[0] = ina.s_addr;
|
|
set_ipmask(h, bits);
|
|
h->next = NULL;
|
|
h->tail = h;
|
|
|
|
return (h);
|
|
}
|
|
|
|
struct node_host *
|
|
host_v6(const char *s, int mask)
|
|
{
|
|
struct addrinfo hints, *res;
|
|
struct node_host *h = NULL;
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = AF_INET6;
|
|
hints.ai_socktype = SOCK_DGRAM; /*dummy*/
|
|
hints.ai_flags = AI_NUMERICHOST;
|
|
if (getaddrinfo(s, "0", &hints, &res) == 0) {
|
|
h = calloc(1, sizeof(struct node_host));
|
|
if (h == NULL)
|
|
err(1, "address: calloc");
|
|
h->ifname = NULL;
|
|
h->af = AF_INET6;
|
|
memcpy(&h->addr.v.a.addr,
|
|
&((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
|
|
sizeof(h->addr.v.a.addr));
|
|
h->ifindex =
|
|
((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
|
|
set_ipmask(h, mask);
|
|
freeaddrinfo(res);
|
|
h->next = NULL;
|
|
h->tail = h;
|
|
}
|
|
|
|
return (h);
|
|
}
|
|
|
|
struct node_host *
|
|
host_dns(const char *s, int v4mask, int v6mask)
|
|
{
|
|
struct addrinfo hints, *res0, *res;
|
|
struct node_host *n, *h = NULL;
|
|
int error, noalias = 0;
|
|
int got4 = 0, got6 = 0;
|
|
char *p, *ps;
|
|
|
|
if ((ps = strdup(s)) == NULL)
|
|
err(1, "host_dns: strdup");
|
|
if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
|
|
noalias = 1;
|
|
*p = '\0';
|
|
}
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = PF_UNSPEC;
|
|
hints.ai_socktype = SOCK_STREAM; /* DUMMY */
|
|
error = getaddrinfo(ps, NULL, &hints, &res0);
|
|
if (error) {
|
|
free(ps);
|
|
return (h);
|
|
}
|
|
|
|
for (res = res0; res; res = res->ai_next) {
|
|
if (res->ai_family != AF_INET &&
|
|
res->ai_family != AF_INET6)
|
|
continue;
|
|
if (noalias) {
|
|
if (res->ai_family == AF_INET) {
|
|
if (got4)
|
|
continue;
|
|
got4 = 1;
|
|
} else {
|
|
if (got6)
|
|
continue;
|
|
got6 = 1;
|
|
}
|
|
}
|
|
n = calloc(1, sizeof(struct node_host));
|
|
if (n == NULL)
|
|
err(1, "host_dns: calloc");
|
|
n->ifname = NULL;
|
|
n->af = res->ai_family;
|
|
if (res->ai_family == AF_INET) {
|
|
memcpy(&n->addr.v.a.addr,
|
|
&((struct sockaddr_in *)
|
|
res->ai_addr)->sin_addr.s_addr,
|
|
sizeof(struct in_addr));
|
|
set_ipmask(n, v4mask);
|
|
} else {
|
|
memcpy(&n->addr.v.a.addr,
|
|
&((struct sockaddr_in6 *)
|
|
res->ai_addr)->sin6_addr.s6_addr,
|
|
sizeof(struct in6_addr));
|
|
n->ifindex =
|
|
((struct sockaddr_in6 *)
|
|
res->ai_addr)->sin6_scope_id;
|
|
set_ipmask(n, v6mask);
|
|
}
|
|
n->next = NULL;
|
|
n->tail = n;
|
|
if (h == NULL)
|
|
h = n;
|
|
else {
|
|
h->tail->next = n;
|
|
h->tail = n;
|
|
}
|
|
}
|
|
freeaddrinfo(res0);
|
|
free(ps);
|
|
|
|
return (h);
|
|
}
|
|
|
|
/*
|
|
* convert a hostname to a list of addresses and put them in the given buffer.
|
|
* test:
|
|
* if set to 1, only simple addresses are accepted (no netblock, no "!").
|
|
*/
|
|
int
|
|
append_addr(struct pfr_buffer *b, char *s, int test)
|
|
{
|
|
char *r;
|
|
struct node_host *h, *n;
|
|
int rv, not = 0;
|
|
|
|
for (r = s; *r == '!'; r++)
|
|
not = !not;
|
|
if ((n = host(r)) == NULL) {
|
|
errno = 0;
|
|
return (-1);
|
|
}
|
|
rv = append_addr_host(b, n, test, not);
|
|
do {
|
|
h = n;
|
|
n = n->next;
|
|
free(h);
|
|
} while (n != NULL);
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* same as previous function, but with a pre-parsed input and the ability
|
|
* to "negate" the result. Does not free the node_host list.
|
|
* not:
|
|
* setting it to 1 is equivalent to adding "!" in front of parameter s.
|
|
*/
|
|
int
|
|
append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
|
|
{
|
|
int bits;
|
|
struct pfr_addr addr;
|
|
|
|
do {
|
|
bzero(&addr, sizeof(addr));
|
|
addr.pfra_not = n->not ^ not;
|
|
addr.pfra_af = n->af;
|
|
addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
|
|
switch (n->af) {
|
|
case AF_INET:
|
|
addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
|
|
bits = 32;
|
|
break;
|
|
case AF_INET6:
|
|
memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
|
|
sizeof(struct in6_addr));
|
|
bits = 128;
|
|
break;
|
|
default:
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
if ((test && (not || addr.pfra_net != bits)) ||
|
|
addr.pfra_net > bits) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
if (pfr_buf_add(b, &addr))
|
|
return (-1);
|
|
} while ((n = n->next) != NULL);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
|
|
{
|
|
struct pfioc_trans_e trans;
|
|
|
|
bzero(&trans, sizeof(trans));
|
|
trans.rs_num = rs_num;
|
|
if (strlcpy(trans.anchor, anchor,
|
|
sizeof(trans.anchor)) >= sizeof(trans.anchor))
|
|
errx(1, "pfctl_add_trans: strlcpy");
|
|
|
|
return pfr_buf_add(buf, &trans);
|
|
}
|
|
|
|
u_int32_t
|
|
pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
|
|
{
|
|
struct pfioc_trans_e *p;
|
|
|
|
PFRB_FOREACH(p, buf)
|
|
if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
|
|
return (p->ticket);
|
|
errx(1, "pfctl_get_ticket: assertion failed");
|
|
}
|
|
|
|
int
|
|
pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
|
|
{
|
|
struct pfioc_trans trans;
|
|
|
|
bzero(&trans, sizeof(trans));
|
|
trans.size = buf->pfrb_size - from;
|
|
trans.esize = sizeof(struct pfioc_trans_e);
|
|
trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
|
|
return ioctl(dev, cmd, &trans);
|
|
}
|