pf_print_state.c revision 126353
1126353Smlaier/* $OpenBSD: pf_print_state.c,v 1.33 2003/07/06 22:01:28 deraadt Exp $ */ 2126353Smlaier 3126353Smlaier/* 4126353Smlaier * Copyright (c) 2001 Daniel Hartmeier 5126353Smlaier * All rights reserved. 6126353Smlaier * 7126353Smlaier * Redistribution and use in source and binary forms, with or without 8126353Smlaier * modification, are permitted provided that the following conditions 9126353Smlaier * are met: 10126353Smlaier * 11126353Smlaier * - Redistributions of source code must retain the above copyright 12126353Smlaier * notice, this list of conditions and the following disclaimer. 13126353Smlaier * - Redistributions in binary form must reproduce the above 14126353Smlaier * copyright notice, this list of conditions and the following 15126353Smlaier * disclaimer in the documentation and/or other materials provided 16126353Smlaier * with the distribution. 17126353Smlaier * 18126353Smlaier * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19126353Smlaier * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20126353Smlaier * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21126353Smlaier * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22126353Smlaier * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23126353Smlaier * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24126353Smlaier * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25126353Smlaier * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26126353Smlaier * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27126353Smlaier * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28126353Smlaier * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29126353Smlaier * POSSIBILITY OF SUCH DAMAGE. 30126353Smlaier * 31126353Smlaier */ 32126353Smlaier 33126353Smlaier#include <sys/types.h> 34126353Smlaier#include <sys/socket.h> 35126353Smlaier#include <net/if.h> 36126353Smlaier#define TCPSTATES 37126353Smlaier#include <netinet/tcp_fsm.h> 38126353Smlaier#include <net/pfvar.h> 39126353Smlaier#include <arpa/inet.h> 40126353Smlaier#include <netdb.h> 41126353Smlaier 42126353Smlaier#include <stdio.h> 43126353Smlaier#include <string.h> 44126353Smlaier 45126353Smlaier#include "pfctl_parser.h" 46126353Smlaier#include "pfctl.h" 47126353Smlaier 48126353Smlaiervoid print_name(struct pf_addr *, sa_family_t); 49126353Smlaier 50126353Smlaiervoid 51126353Smlaierprint_addr(struct pf_addr_wrap *addr, sa_family_t af, int verbose) 52126353Smlaier{ 53126353Smlaier switch(addr->type) { 54126353Smlaier case PF_ADDR_DYNIFTL: 55126353Smlaier printf("(%s)", addr->v.ifname); 56126353Smlaier break; 57126353Smlaier case PF_ADDR_TABLE: 58126353Smlaier if (verbose) 59126353Smlaier if (addr->p.tblcnt == -1) 60126353Smlaier printf("<%s:*>", addr->v.tblname); 61126353Smlaier else 62126353Smlaier printf("<%s:%d>", addr->v.tblname, 63126353Smlaier addr->p.tblcnt); 64126353Smlaier else 65126353Smlaier printf("<%s>", addr->v.tblname); 66126353Smlaier return; 67126353Smlaier case PF_ADDR_ADDRMASK: 68126353Smlaier if (PF_AZERO(&addr->v.a.addr, AF_INET6) && 69126353Smlaier PF_AZERO(&addr->v.a.mask, AF_INET6)) 70126353Smlaier printf("any"); 71126353Smlaier else { 72126353Smlaier char buf[48]; 73126353Smlaier 74126353Smlaier if (inet_ntop(af, &addr->v.a.addr, buf, 75126353Smlaier sizeof(buf)) == NULL) 76126353Smlaier printf("?"); 77126353Smlaier else 78126353Smlaier printf("%s", buf); 79126353Smlaier } 80126353Smlaier break; 81126353Smlaier case PF_ADDR_NOROUTE: 82126353Smlaier printf("no-route"); 83126353Smlaier return; 84126353Smlaier default: 85126353Smlaier printf("?"); 86126353Smlaier return; 87126353Smlaier } 88126353Smlaier if (! PF_AZERO(&addr->v.a.mask, af)) { 89126353Smlaier int bits = unmask(&addr->v.a.mask, af); 90126353Smlaier 91126353Smlaier if (bits != (af == AF_INET ? 32 : 128)) 92126353Smlaier printf("/%d", bits); 93126353Smlaier } 94126353Smlaier} 95126353Smlaier 96126353Smlaiervoid 97126353Smlaierprint_name(struct pf_addr *addr, sa_family_t af) 98126353Smlaier{ 99126353Smlaier char host[NI_MAXHOST]; 100126353Smlaier 101126353Smlaier strlcpy(host, "?", sizeof(host)); 102126353Smlaier switch (af) { 103126353Smlaier case AF_INET: { 104126353Smlaier struct sockaddr_in sin; 105126353Smlaier 106126353Smlaier memset(&sin, 0, sizeof(sin)); 107126353Smlaier sin.sin_len = sizeof(sin); 108126353Smlaier sin.sin_family = AF_INET; 109126353Smlaier sin.sin_addr = addr->v4; 110126353Smlaier getnameinfo((struct sockaddr *)&sin, sin.sin_len, 111126353Smlaier host, sizeof(host), NULL, 0, NI_NOFQDN); 112126353Smlaier break; 113126353Smlaier } 114126353Smlaier case AF_INET6: { 115126353Smlaier struct sockaddr_in6 sin6; 116126353Smlaier 117126353Smlaier memset(&sin6, 0, sizeof(sin6)); 118126353Smlaier sin6.sin6_len = sizeof(sin6); 119126353Smlaier sin6.sin6_family = AF_INET6; 120126353Smlaier sin6.sin6_addr = addr->v6; 121126353Smlaier getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 122126353Smlaier host, sizeof(host), NULL, 0, NI_NOFQDN); 123126353Smlaier break; 124126353Smlaier } 125126353Smlaier } 126126353Smlaier printf("%s", host); 127126353Smlaier} 128126353Smlaier 129126353Smlaiervoid 130126353Smlaierprint_host(struct pf_state_host *h, sa_family_t af, int opts) 131126353Smlaier{ 132126353Smlaier u_int16_t p = ntohs(h->port); 133126353Smlaier 134126353Smlaier if (opts & PF_OPT_USEDNS) 135126353Smlaier print_name(&h->addr, af); 136126353Smlaier else { 137126353Smlaier struct pf_addr_wrap aw; 138126353Smlaier 139126353Smlaier memset(&aw, 0, sizeof(aw)); 140126353Smlaier aw.v.a.addr = h->addr; 141126353Smlaier if (af == AF_INET) 142126353Smlaier aw.v.a.mask.addr32[0] = 0xffffffff; 143126353Smlaier else 144126353Smlaier memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 145126353Smlaier print_addr(&aw, af, opts & PF_OPT_VERBOSE2); 146126353Smlaier } 147126353Smlaier 148126353Smlaier if (p) { 149126353Smlaier if (af == AF_INET) 150126353Smlaier printf(":%u", p); 151126353Smlaier else 152126353Smlaier printf("[%u]", p); 153126353Smlaier } 154126353Smlaier} 155126353Smlaier 156126353Smlaiervoid 157126353Smlaierprint_seq(struct pf_state_peer *p) 158126353Smlaier{ 159126353Smlaier if (p->seqdiff) 160126353Smlaier printf("[%u + %u](+%u)", p->seqlo, p->seqhi - p->seqlo, 161126353Smlaier p->seqdiff); 162126353Smlaier else 163126353Smlaier printf("[%u + %u]", p->seqlo, p->seqhi - p->seqlo); 164126353Smlaier} 165126353Smlaier 166126353Smlaiervoid 167126353Smlaierprint_state(struct pf_state *s, int opts) 168126353Smlaier{ 169126353Smlaier struct pf_state_peer *src, *dst; 170126353Smlaier struct protoent *p; 171126353Smlaier int min, sec; 172126353Smlaier 173126353Smlaier if (s->direction == PF_OUT) { 174126353Smlaier src = &s->src; 175126353Smlaier dst = &s->dst; 176126353Smlaier } else { 177126353Smlaier src = &s->dst; 178126353Smlaier dst = &s->src; 179126353Smlaier } 180126353Smlaier if ((p = getprotobynumber(s->proto)) != NULL) 181126353Smlaier printf("%s ", p->p_name); 182126353Smlaier else 183126353Smlaier printf("%u ", s->proto); 184126353Smlaier if (PF_ANEQ(&s->lan.addr, &s->gwy.addr, s->af) || 185126353Smlaier (s->lan.port != s->gwy.port)) { 186126353Smlaier print_host(&s->lan, s->af, opts); 187126353Smlaier if (s->direction == PF_OUT) 188126353Smlaier printf(" -> "); 189126353Smlaier else 190126353Smlaier printf(" <- "); 191126353Smlaier } 192126353Smlaier print_host(&s->gwy, s->af, opts); 193126353Smlaier if (s->direction == PF_OUT) 194126353Smlaier printf(" -> "); 195126353Smlaier else 196126353Smlaier printf(" <- "); 197126353Smlaier print_host(&s->ext, s->af, opts); 198126353Smlaier 199126353Smlaier printf(" "); 200126353Smlaier if (s->proto == IPPROTO_TCP) { 201126353Smlaier if (src->state <= TCPS_TIME_WAIT && 202126353Smlaier dst->state <= TCPS_TIME_WAIT) 203126353Smlaier printf(" %s:%s\n", tcpstates[src->state], 204126353Smlaier tcpstates[dst->state]); 205126353Smlaier else if (src->state == PF_TCPS_PROXY_SRC || 206126353Smlaier dst->state == PF_TCPS_PROXY_SRC) 207126353Smlaier printf(" PROXY:SRC\n"); 208126353Smlaier else if (src->state == PF_TCPS_PROXY_DST || 209126353Smlaier dst->state == PF_TCPS_PROXY_DST) 210126353Smlaier printf(" PROXY:DST\n"); 211126353Smlaier else 212126353Smlaier printf(" <BAD STATE LEVELS %u:%u>\n", 213126353Smlaier src->state, dst->state); 214126353Smlaier if (opts & PF_OPT_VERBOSE) { 215126353Smlaier printf(" "); 216126353Smlaier print_seq(src); 217126353Smlaier if (src->wscale && dst->wscale) 218126353Smlaier printf(" wscale %u", 219126353Smlaier src->wscale & PF_WSCALE_MASK); 220126353Smlaier printf(" "); 221126353Smlaier print_seq(dst); 222126353Smlaier if (src->wscale && dst->wscale) 223126353Smlaier printf(" wscale %u", 224126353Smlaier dst->wscale & PF_WSCALE_MASK); 225126353Smlaier printf("\n"); 226126353Smlaier } 227126353Smlaier } else if (s->proto == IPPROTO_UDP && src->state < PFUDPS_NSTATES && 228126353Smlaier dst->state < PFUDPS_NSTATES) { 229126353Smlaier const char *states[] = PFUDPS_NAMES; 230126353Smlaier 231126353Smlaier printf(" %s:%s\n", states[src->state], states[dst->state]); 232126353Smlaier } else if (s->proto != IPPROTO_ICMP && src->state < PFOTHERS_NSTATES && 233126353Smlaier dst->state < PFOTHERS_NSTATES) { 234126353Smlaier /* XXX ICMP doesn't really have state levels */ 235126353Smlaier const char *states[] = PFOTHERS_NAMES; 236126353Smlaier 237126353Smlaier printf(" %s:%s\n", states[src->state], states[dst->state]); 238126353Smlaier } else { 239126353Smlaier printf(" %u:%u\n", src->state, dst->state); 240126353Smlaier } 241126353Smlaier 242126353Smlaier if (opts & PF_OPT_VERBOSE) { 243126353Smlaier sec = s->creation % 60; 244126353Smlaier s->creation /= 60; 245126353Smlaier min = s->creation % 60; 246126353Smlaier s->creation /= 60; 247126353Smlaier printf(" age %.2u:%.2u:%.2u", s->creation, min, sec); 248126353Smlaier sec = s->expire % 60; 249126353Smlaier s->expire /= 60; 250126353Smlaier min = s->expire % 60; 251126353Smlaier s->expire /= 60; 252126353Smlaier printf(", expires in %.2u:%.2u:%.2u", s->expire, min, sec); 253126353Smlaier printf(", %u:%u pkts, %u:%u bytes", 254126353Smlaier s->packets[0], s->packets[1], s->bytes[0], s->bytes[1]); 255126353Smlaier if (s->anchor.nr != -1) 256126353Smlaier printf(", anchor %u", s->anchor.nr); 257126353Smlaier if (s->rule.nr != -1) 258126353Smlaier printf(", rule %u", s->rule.nr); 259126353Smlaier printf("\n"); 260126353Smlaier } 261126353Smlaier} 262126353Smlaier 263126353Smlaierint 264126353Smlaierunmask(struct pf_addr *m, sa_family_t af) 265126353Smlaier{ 266126353Smlaier int i = 31, j = 0, b = 0; 267126353Smlaier u_int32_t tmp; 268126353Smlaier 269126353Smlaier while (j < 4 && m->addr32[j] == 0xffffffff) { 270126353Smlaier b += 32; 271126353Smlaier j++; 272126353Smlaier } 273126353Smlaier if (j < 4) { 274126353Smlaier tmp = ntohl(m->addr32[j]); 275126353Smlaier for (i = 31; tmp & (1 << i); --i) 276126353Smlaier b++; 277126353Smlaier } 278126353Smlaier return (b); 279126353Smlaier} 280