/* $OpenBSD: pf_print_state.c,v 1.14 2018/09/07 07:49:43 kevlo Exp $ */ /* * Copyright (c) 2001 Daniel Hartmeier * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ #include <sys/types.h> #include <sys/socket.h> #include <net/if.h> #define TCPSTATES #include <netinet/in.h> #include <netinet/tcp_fsm.h> #include <net/pfvar.h> #include <arpa/inet.h> #include <netdb.h> #include <stdio.h> #include <string.h> #include <vis.h> #include "pfctl_parser.h" #include "pfctl.h" #include "addrtoname.h" void print_name(struct pf_addr *, sa_family_t); void print_addr(struct pf_addr_wrap *addr, sa_family_t af, int verbose) { switch (addr->type) { case PF_ADDR_DYNIFTL: printf("(%s", addr->v.ifname); if (addr->iflags & PFI_AFLAG_NETWORK) printf(":network"); if (addr->iflags & PFI_AFLAG_BROADCAST) printf(":broadcast"); if (addr->iflags & PFI_AFLAG_PEER) printf(":peer"); if (addr->iflags & PFI_AFLAG_NOALIAS) printf(":0"); if (verbose) { if (addr->p.dyncnt <= 0) printf(":*"); else printf(":%d", addr->p.dyncnt); } printf(")"); break; case PF_ADDR_TABLE: if (verbose) if (addr->p.tblcnt == -1) printf("<%s:*>", addr->v.tblname); else printf("<%s:%d>", addr->v.tblname, addr->p.tblcnt); else printf("<%s>", addr->v.tblname); return; case PF_ADDR_ADDRMASK: if (PF_AZERO(&addr->v.a.addr, AF_INET6) && PF_AZERO(&addr->v.a.mask, AF_INET6)) printf("any"); else { char buf[48]; if (inet_ntop(af, &addr->v.a.addr, buf, sizeof(buf)) == NULL) printf("?"); else printf("%s", buf); } break; case PF_ADDR_NOROUTE: printf("no-route"); return; default: printf("?"); return; } if (! PF_AZERO(&addr->v.a.mask, af)) { int bits = unmask(&addr->v.a.mask); if (bits != (af == AF_INET ? 32 : 128)) printf("/%d", bits); } } void print_name(struct pf_addr *addr, sa_family_t af) { char *host; switch (af) { case AF_INET: host = getname((char *)&addr->v4); break; case AF_INET6: host = getname6((char *)&addr->v6); break; default: host = "?"; break; } printf("%s", host); } void print_host(struct pf_addr *addr, u_int16_t port, sa_family_t af, u_int16_t rdom, const char *proto, int opts) { struct servent *s = NULL; char ps[6]; if (rdom) printf("(%u) ", ntohs(rdom)); if (opts & PF_OPT_USEDNS) print_name(addr, af); else { struct pf_addr_wrap aw; memset(&aw, 0, sizeof(aw)); aw.v.a.addr = *addr; if (af == AF_INET) aw.v.a.mask.addr32[0] = 0xffffffff; else { memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); af = AF_INET6; } print_addr(&aw, af, opts & PF_OPT_VERBOSE2); } if (port) { snprintf(ps, sizeof(ps), "%u", ntohs(port)); if (opts & PF_OPT_PORTNAMES) s = getservbyport(port, proto); if (af == AF_INET) printf(":%s", s ? s->s_name : ps); else printf("[%s]", s ? s->s_name : ps); } } void print_seq(struct pfsync_state_peer *p) { if (p->seqdiff) printf("[%u + %u](+%u)", ntohl(p->seqlo), ntohl(p->seqhi) - ntohl(p->seqlo), ntohl(p->seqdiff)); else printf("[%u + %u]", ntohl(p->seqlo), ntohl(p->seqhi) - ntohl(p->seqlo)); } void print_state(struct pfsync_state *s, int opts) { struct pfsync_state_peer *src, *dst; struct pfsync_state_key *sk, *nk; char ifname[IFNAMSIZ * 4 + 1]; int min, sec, sidx, didx, i; char *cp = ifname; if (s->direction == PF_OUT) { src = &s->src; dst = &s->dst; sk = &s->key[PF_SK_STACK]; nk = &s->key[PF_SK_WIRE]; if (s->proto == IPPROTO_ICMP || s->proto == IPPROTO_ICMPV6) sk->port[0] = nk->port[0]; } else { src = &s->dst; dst = &s->src; sk = &s->key[PF_SK_WIRE]; nk = &s->key[PF_SK_STACK]; if (s->proto == IPPROTO_ICMP || s->proto == IPPROTO_ICMPV6) sk->port[1] = nk->port[1]; } /* Treat s->ifname as untrusted input. */ for (i = 0; i < IFNAMSIZ && s->ifname[i] != '\0'; i++) cp = vis(cp, s->ifname[i], VIS_WHITE, 0); printf("%s ", ifname); printf("%s ", ipproto_string(s->proto)); if (nk->af != sk->af) sidx = 1, didx = 0; else sidx = 0, didx = 1; print_host(&nk->addr[didx], nk->port[didx], nk->af, nk->rdomain, NULL, opts); if (nk->af != sk->af || PF_ANEQ(&nk->addr[1], &sk->addr[1], nk->af) || nk->port[1] != sk->port[1]) { printf(" ("); print_host(&sk->addr[1], sk->port[1], sk->af, sk->rdomain, NULL, opts); printf(")"); } if (s->direction == PF_OUT) printf(" -> "); else printf(" <- "); print_host(&nk->addr[sidx], nk->port[sidx], nk->af, nk->rdomain, NULL, opts); if (nk->af != sk->af || PF_ANEQ(&nk->addr[0], &sk->addr[0], nk->af) || nk->port[0] != sk->port[0]) { printf(" ("); print_host(&sk->addr[0], sk->port[0], sk->af, sk->rdomain, NULL, opts); printf(")"); } printf(" "); if (s->proto == IPPROTO_TCP) { if (src->state <= TCPS_TIME_WAIT && dst->state <= TCPS_TIME_WAIT) printf("\n %s:%s", tcpstates[src->state], tcpstates[dst->state]); else if (src->state == PF_TCPS_PROXY_SRC || dst->state == PF_TCPS_PROXY_SRC) printf("\n PROXY:SRC"); else if (src->state == PF_TCPS_PROXY_DST || dst->state == PF_TCPS_PROXY_DST) printf("\n PROXY:DST"); else printf("\n <BAD STATE LEVELS %u:%u>", src->state, dst->state); if (opts & PF_OPT_VERBOSE) { printf("\n "); print_seq(src); if (src->wscale && dst->wscale) printf(" wscale %u", src->wscale & PF_WSCALE_MASK); printf(" "); print_seq(dst); if (src->wscale && dst->wscale) printf(" wscale %u", dst->wscale & PF_WSCALE_MASK); } } else if (s->proto == IPPROTO_UDP && src->state < PFUDPS_NSTATES && dst->state < PFUDPS_NSTATES) { const char *states[] = PFUDPS_NAMES; printf(" %s:%s", states[src->state], states[dst->state]); } else if (s->proto != IPPROTO_ICMP && src->state < PFOTHERS_NSTATES && dst->state < PFOTHERS_NSTATES) { /* XXX ICMP doesn't really have state levels */ const char *states[] = PFOTHERS_NAMES; printf(" %s:%s", states[src->state], states[dst->state]); } else { printf(" %u:%u", src->state, dst->state); } if (opts & PF_OPT_VERBOSE) { u_int64_t packets[2]; u_int64_t bytes[2]; u_int32_t creation = ntohl(s->creation); u_int32_t expire = ntohl(s->expire); sec = creation % 60; creation /= 60; min = creation % 60; creation /= 60; printf("\n age %.2u:%.2u:%.2u", creation, min, sec); sec = expire % 60; expire /= 60; min = expire % 60; expire /= 60; printf(", expires in %.2u:%.2u:%.2u", expire, min, sec); bcopy(s->packets[0], &packets[0], sizeof(u_int64_t)); bcopy(s->packets[1], &packets[1], sizeof(u_int64_t)); bcopy(s->bytes[0], &bytes[0], sizeof(u_int64_t)); bcopy(s->bytes[1], &bytes[1], sizeof(u_int64_t)); printf(", %llu:%llu pkts, %llu:%llu bytes", betoh64(packets[0]), betoh64(packets[1]), betoh64(bytes[0]), betoh64(bytes[1])); if (s->anchor != -1) printf(", anchor %u", ntohl(s->anchor)); if (s->rule != -1) printf(", rule %u", ntohl(s->rule)); } if (opts & PF_OPT_VERBOSE2) { u_int64_t id; bcopy(&s->id, &id, sizeof(u_int64_t)); printf("\n id: %016llx creatorid: %08x", betoh64(id), ntohl(s->creatorid)); } } int unmask(struct pf_addr *m) { int i = 31, j = 0, b = 0; u_int32_t tmp; while (j < 4 && m->addr32[j] == 0xffffffff) { b += 32; j++; } if (j < 4) { tmp = ntohl(m->addr32[j]); for (i = 31; tmp & (1 << i); --i) b++; } return (b); }