diff options
Diffstat (limited to 'contrib/tcpdump/print-pfsync.c')
-rw-r--r-- | contrib/tcpdump/print-pfsync.c | 451 |
1 files changed, 451 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-pfsync.c b/contrib/tcpdump/print-pfsync.c new file mode 100644 index 0000000..7a6da89 --- /dev/null +++ b/contrib/tcpdump/print-pfsync.c @@ -0,0 +1,451 @@ +/* + * Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org> + * Copyright (c) 2002 Michael Shalayeff + * 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: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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 AUTHOR ``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 AUTHOR OR HIS RELATIVES 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 MIND, 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. + * + * $OpenBSD: print-pfsync.c,v 1.38 2012/09/19 13:50:36 mikeb Exp $ + * $OpenBSD: pf_print_state.c,v 1.11 2012/07/08 17:48:37 lteo Exp $ + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <tcpdump-stdinc.h> + +#include <sys/endian.h> +#include <net/if.h> +#include <net/pfvar.h> /* XXX */ +#include <net/if_pfsync.h> +#include <netinet/ip.h> +#define TCPSTATES +#include <netinet/tcp_fsm.h> + +#include <string.h> + +#include "interface.h" +#include "addrtoname.h" + +static void pfsync_print(struct pfsync_header *, const u_char *, u_int); +static void print_src_dst(const struct pfsync_state_peer *, + const struct pfsync_state_peer *, uint8_t); +static void print_state(struct pfsync_state *); + +#ifdef notyet +void +pfsync_if_print(u_char *user, const struct pcap_pkthdr *h, + register const u_char *p) +{ + u_int caplen = h->caplen; + + ts_print(&h->ts); + + if (caplen < PFSYNC_HDRLEN) { + printf("[|pfsync]"); + goto out; + } + + pfsync_print((struct pfsync_header *)p, + p + sizeof(struct pfsync_header), + caplen - sizeof(struct pfsync_header)); +out: + if (xflag) { + default_print((const u_char *)p, caplen); + } + putchar('\n'); +} +#endif /* notyet */ + +void +pfsync_ip_print(const u_char *bp, u_int len) +{ + struct pfsync_header *hdr = (struct pfsync_header *)bp; + + if (len < PFSYNC_HDRLEN) + printf("[|pfsync]"); + else + pfsync_print(hdr, bp + sizeof(struct pfsync_header), + len - sizeof(struct pfsync_header)); +} + +struct pfsync_actions { + const char *name; + size_t len; + void (*print)(const void *); +}; + +static void pfsync_print_clr(const void *); +static void pfsync_print_state(const void *); +static void pfsync_print_ins_ack(const void *); +static void pfsync_print_upd_c(const void *); +static void pfsync_print_upd_req(const void *); +static void pfsync_print_del_c(const void *); +static void pfsync_print_bus(const void *); +static void pfsync_print_tdb(const void *); + +struct pfsync_actions actions[] = { + { "clear all", sizeof(struct pfsync_clr), pfsync_print_clr }, + { "insert", sizeof(struct pfsync_state), pfsync_print_state }, + { "insert ack", sizeof(struct pfsync_ins_ack), pfsync_print_ins_ack }, + { "update", sizeof(struct pfsync_ins_ack), pfsync_print_state }, + { "update compressed", sizeof(struct pfsync_upd_c), + pfsync_print_upd_c }, + { "request uncompressed", sizeof(struct pfsync_upd_req), + pfsync_print_upd_req }, + { "delete", sizeof(struct pfsync_state), pfsync_print_state }, + { "delete compressed", sizeof(struct pfsync_del_c), + pfsync_print_del_c }, + { "frag insert", 0, NULL }, + { "frag delete", 0, NULL }, + { "bulk update status", sizeof(struct pfsync_bus), + pfsync_print_bus }, + { "tdb", 0, pfsync_print_tdb }, + { "eof", 0, NULL }, +}; + +static void +pfsync_print(struct pfsync_header *hdr, const u_char *bp, u_int len) +{ + struct pfsync_subheader *subh; + int count, plen, i; + u_int alen; + + plen = ntohs(hdr->len); + + printf("PFSYNCv%d len %d", hdr->version, plen); + + if (hdr->version != PFSYNC_VERSION) + return; + + plen -= sizeof(*hdr); + + while (plen > 0) { + if (len < sizeof(*subh)) + break; + + subh = (struct pfsync_subheader *)bp; + bp += sizeof(*subh); + len -= sizeof(*subh); + plen -= sizeof(*subh); + + if (subh->action >= PFSYNC_ACT_MAX) { + printf("\n act UNKNOWN id %d", subh->action); + return; + } + + count = ntohs(subh->count); + printf("\n %s count %d", actions[subh->action].name, count); + alen = actions[subh->action].len; + + if (subh->action == PFSYNC_ACT_EOF) + return; + + if (actions[subh->action].print == NULL) { + printf("\n unimplemented action %hhu", subh->action); + return; + } + + for (i = 0; i < count; i++) { + if (len < alen) { + len = 0; + break; + } + + if (vflag) + actions[subh->action].print(bp); + + bp += alen; + len -= alen; + plen -= alen; + } + } + + if (plen > 0) { + printf("\n ..."); + return; + } + if (plen < 0) { + printf("\n invalid header length"); + return; + } + if (len > 0) + printf("\n invalid packet length"); +} + +static void +pfsync_print_clr(const void *bp) +{ + const struct pfsync_clr *clr = bp; + + printf("\n\tcreatorid: %08x", htonl(clr->creatorid)); + if (clr->ifname[0] != '\0') + printf(" interface: %s", clr->ifname); +} + +static void +pfsync_print_state(const void *bp) +{ + struct pfsync_state *st = (struct pfsync_state *)bp; + + putchar('\n'); + print_state(st); +} + +static void +pfsync_print_ins_ack(const void *bp) +{ + const struct pfsync_ins_ack *iack = bp; + + printf("\n\tid: %016jx creatorid: %08x", (uintmax_t )be64toh(iack->id), + ntohl(iack->creatorid)); +} + +static void +pfsync_print_upd_c(const void *bp) +{ + const struct pfsync_upd_c *u = bp; + + printf("\n\tid: %016jx creatorid: %08x", (uintmax_t )be64toh(u->id), + ntohl(u->creatorid)); + if (vflag > 2) { + printf("\n\tTCP? :"); + print_src_dst(&u->src, &u->dst, IPPROTO_TCP); + } +} + +static void +pfsync_print_upd_req(const void *bp) +{ + const struct pfsync_upd_req *ur = bp; + + printf("\n\tid: %016jx creatorid: %08x", (uintmax_t )be64toh(ur->id), + ntohl(ur->creatorid)); +} + +static void +pfsync_print_del_c(const void *bp) +{ + const struct pfsync_del_c *d = bp; + + printf("\n\tid: %016jx creatorid: %08x", (uintmax_t )be64toh(d->id), + ntohl(d->creatorid)); +} + +static void +pfsync_print_bus(const void *bp) +{ + const struct pfsync_bus *b = bp; + uint32_t endtime; + int min, sec; + const char *status; + + endtime = ntohl(b->endtime); + sec = endtime % 60; + endtime /= 60; + min = endtime % 60; + endtime /= 60; + + switch (b->status) { + case PFSYNC_BUS_START: + status = "start"; + break; + case PFSYNC_BUS_END: + status = "end"; + break; + default: + status = "UNKNOWN"; + break; + } + + printf("\n\tcreatorid: %08x age: %.2u:%.2u:%.2u status: %s", + htonl(b->creatorid), endtime, min, sec, status); +} + +static void +pfsync_print_tdb(const void *bp) +{ + const struct pfsync_tdb *t = bp; + + printf("\n\tspi: 0x%08x rpl: %ju cur_bytes: %ju", + ntohl(t->spi), (uintmax_t )be64toh(t->rpl), + (uintmax_t )be64toh(t->cur_bytes)); +} + +static void +print_host(struct pf_addr *addr, uint16_t port, sa_family_t af, + const char *proto) +{ + char buf[48]; + + if (inet_ntop(af, addr, buf, sizeof(buf)) == NULL) + printf("?"); + else + printf("%s", buf); + + if (port) + printf(".%hu", ntohs(port)); +} + +static void +print_seq(const 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)); +} + +static void +print_src_dst(const struct pfsync_state_peer *src, + const struct pfsync_state_peer *dst, uint8_t proto) +{ + + if (proto == IPPROTO_TCP) { + if (src->state <= TCPS_TIME_WAIT && + dst->state <= TCPS_TIME_WAIT) + printf(" %s:%s", tcpstates[src->state], + tcpstates[dst->state]); + else if (src->state == PF_TCPS_PROXY_SRC || + dst->state == PF_TCPS_PROXY_SRC) + printf(" PROXY:SRC"); + else if (src->state == PF_TCPS_PROXY_DST || + dst->state == PF_TCPS_PROXY_DST) + printf(" PROXY:DST"); + else + printf(" <BAD STATE LEVELS %u:%u>", + src->state, dst->state); + if (vflag > 1) { + printf("\n\t"); + 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 (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 (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); + } +} + +static void +print_state(struct pfsync_state *s) +{ + struct pfsync_state_peer *src, *dst; + struct pfsync_state_key *sk, *nk; + int min, sec; + + 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]; + } + printf("\t%s ", s->ifname); + printf("proto %u ", s->proto); + + print_host(&nk->addr[1], nk->port[1], s->af, NULL); + if (PF_ANEQ(&nk->addr[1], &sk->addr[1], s->af) || + nk->port[1] != sk->port[1]) { + printf(" ("); + print_host(&sk->addr[1], sk->port[1], s->af, NULL); + printf(")"); + } + if (s->direction == PF_OUT) + printf(" -> "); + else + printf(" <- "); + print_host(&nk->addr[0], nk->port[0], s->af, NULL); + if (PF_ANEQ(&nk->addr[0], &sk->addr[0], s->af) || + nk->port[0] != sk->port[0]) { + printf(" ("); + print_host(&sk->addr[0], sk->port[0], s->af, NULL); + printf(")"); + } + + print_src_dst(src, dst, s->proto); + + if (vflag > 1) { + uint64_t packets[2]; + uint64_t bytes[2]; + uint32_t creation = ntohl(s->creation); + uint32_t expire = ntohl(s->expire); + + sec = creation % 60; + creation /= 60; + min = creation % 60; + creation /= 60; + printf("\n\tage %.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(uint64_t)); + bcopy(s->packets[1], &packets[1], sizeof(uint64_t)); + bcopy(s->bytes[0], &bytes[0], sizeof(uint64_t)); + bcopy(s->bytes[1], &bytes[1], sizeof(uint64_t)); + printf(", %ju:%ju pkts, %ju:%ju bytes", + be64toh(packets[0]), be64toh(packets[1]), + be64toh(bytes[0]), be64toh(bytes[1])); + if (s->anchor != ntohl(-1)) + printf(", anchor %u", ntohl(s->anchor)); + if (s->rule != ntohl(-1)) + printf(", rule %u", ntohl(s->rule)); + } + if (vflag > 1) { + uint64_t id; + + bcopy(&s->id, &id, sizeof(uint64_t)); + printf("\n\tid: %016jx creatorid: %08x", + (uintmax_t )be64toh(id), ntohl(s->creatorid)); + } +} |