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Merge from CheriBSD: 1065cf515a7c2062598009c1318055aacbb39e80

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Convert the pfsync dissector to use the netdissect framework.

Differential Revision:	https://reviews.freebsd.org/D2359
Reviewed by:	glebius
Sponsored by:	DARPA, AFRL
This commit is contained in:
Brooks Davis 2015-04-24 16:11:22 +00:00
parent 12b4b5a0da
commit 04c5335197
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=281938
4 changed files with 111 additions and 105 deletions
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2
contrib/tcpdump/interface.h
View File

@ -148,8 +148,6 @@ extern uint16_t create_osi_cksum(const uint8_t *, int, int);
#include <pcap.h>
extern void pfsync_ip_print(const u_char *, u_int);
extern char *q922_string(const u_char *);
extern char *smb_errstr(int, int);
extern const char *nt_errstr(uint32_t);

2
contrib/tcpdump/netdissect.h
View File

@ -540,6 +540,8 @@ extern void timed_print(netdissect_options *, const u_char *);
extern void m3ua_print(netdissect_options *, const u_char *, const u_int);
extern void aoe_print(netdissect_options *, const u_char *, const u_int);
extern void pfsync_ip_print(netdissect_options *, const u_char *, u_int);
/* stuff that has not yet been rototiled */
#if 0

2
contrib/tcpdump/print-ip.c
View File

@ -487,7 +487,7 @@ ip_print_demux(netdissect_options *ndo,
#if defined(HAVE_NET_PFVAR_H)
case IPPROTO_PFSYNC:
pfsync_ip_print(ipds->cp, ipds->len);
pfsync_ip_print(ndo, ipds->cp, ipds->len);
break;
#endif

210
contrib/tcpdump/print-pfsync.c
View File

@ -47,10 +47,12 @@
#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 *,
static void pfsync_print(netdissect_options *, struct pfsync_header *,
const u_char *, u_int);
static void print_src_dst(netdissect_options *,
const struct pfsync_state_peer *,
const struct pfsync_state_peer *, uint8_t);
static void print_state(struct pfsync_state *);
static void print_state(netdissect_options *, struct pfsync_state *);
#ifdef notyet
void
@ -62,7 +64,7 @@ pfsync_if_print(u_char *user, const struct pcap_pkthdr *h,
ts_print(&h->ts);
if (caplen < PFSYNC_HDRLEN) {
printf("[|pfsync]");
ND_PRINT((ndo, "[|pfsync]"));
goto out;
}
@ -73,36 +75,36 @@ pfsync_if_print(u_char *user, const struct pcap_pkthdr *h,
if (xflag) {
default_print((const u_char *)p, caplen);
}
putchar('\n');
safeputchar(ndo, '\n');
}
#endif /* notyet */
void
pfsync_ip_print(const u_char *bp, u_int len)
pfsync_ip_print(netdissect_options *ndo , const u_char *bp, u_int len)
{
struct pfsync_header *hdr = (struct pfsync_header *)bp;
if (len < PFSYNC_HDRLEN)
printf("[|pfsync]");
ND_PRINT((ndo, "[|pfsync]"));
else
pfsync_print(hdr, bp + sizeof(struct pfsync_header),
pfsync_print(ndo, hdr, bp + sizeof(struct pfsync_header),
len - sizeof(struct pfsync_header));
}
struct pfsync_actions {
const char *name;
size_t len;
void (*print)(const void *);
void (*print)(netdissect_options *, 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 *);
static void pfsync_print_clr(netdissect_options *, const void *);
static void pfsync_print_state(netdissect_options *, const void *);
static void pfsync_print_ins_ack(netdissect_options *, const void *);
static void pfsync_print_upd_c(netdissect_options *, const void *);
static void pfsync_print_upd_req(netdissect_options *, const void *);
static void pfsync_print_del_c(netdissect_options *, const void *);
static void pfsync_print_bus(netdissect_options *, const void *);
static void pfsync_print_tdb(netdissect_options *, const void *);
struct pfsync_actions actions[] = {
{ "clear all", sizeof(struct pfsync_clr), pfsync_print_clr },
@ -125,7 +127,8 @@ struct pfsync_actions actions[] = {
};
static void
pfsync_print(struct pfsync_header *hdr, const u_char *bp, u_int len)
pfsync_print(netdissect_options *ndo, struct pfsync_header *hdr,
const u_char *bp, u_int len)
{
struct pfsync_subheader *subh;
int count, plen, i;
@ -133,7 +136,7 @@ pfsync_print(struct pfsync_header *hdr, const u_char *bp, u_int len)
plen = ntohs(hdr->len);
printf("PFSYNCv%d len %d", hdr->version, plen);
ND_PRINT((ndo, "PFSYNCv%d len %d", hdr->version, plen));
if (hdr->version != PFSYNC_VERSION)
return;
@ -150,19 +153,22 @@ pfsync_print(struct pfsync_header *hdr, const u_char *bp, u_int len)
plen -= sizeof(*subh);
if (subh->action >= PFSYNC_ACT_MAX) {
printf("\n act UNKNOWN id %d", subh->action);
ND_PRINT((ndo, "\n act UNKNOWN id %d",
subh->action));
return;
}
count = ntohs(subh->count);
printf("\n %s count %d", actions[subh->action].name, count);
ND_PRINT((ndo, "\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);
ND_PRINT((ndo, "\n unimplemented action %hhu",
subh->action));
return;
}
@ -173,7 +179,7 @@ pfsync_print(struct pfsync_header *hdr, const u_char *bp, u_int len)
}
if (vflag)
actions[subh->action].print(bp);
actions[subh->action].print(ndo, bp);
bp += alen;
len -= alen;
@ -182,78 +188,78 @@ pfsync_print(struct pfsync_header *hdr, const u_char *bp, u_int len)
}
if (plen > 0) {
printf("\n ...");
ND_PRINT((ndo, "\n ..."));
return;
}
if (plen < 0) {
printf("\n invalid header length");
ND_PRINT((ndo, "\n invalid header length"));
return;
}
if (len > 0)
printf("\n invalid packet length");
ND_PRINT((ndo, "\n invalid packet length"));
}
static void
pfsync_print_clr(const void *bp)
pfsync_print_clr(netdissect_options *ndo, const void *bp)
{
const struct pfsync_clr *clr = bp;
printf("\n\tcreatorid: %08x", htonl(clr->creatorid));
ND_PRINT((ndo, "\n\tcreatorid: %08x", htonl(clr->creatorid)));
if (clr->ifname[0] != '\0')
printf(" interface: %s", clr->ifname);
ND_PRINT((ndo, " interface: %s", clr->ifname));
}
static void
pfsync_print_state(const void *bp)
pfsync_print_state(netdissect_options *ndo, const void *bp)
{
struct pfsync_state *st = (struct pfsync_state *)bp;
putchar('\n');
print_state(st);
safeputchar(ndo, '\n');
print_state(ndo, st);
}
static void
pfsync_print_ins_ack(const void *bp)
pfsync_print_ins_ack(netdissect_options *ndo, const void *bp)
{
const struct pfsync_ins_ack *iack = bp;
printf("\n\tid: %016jx creatorid: %08x", (uintmax_t )be64toh(iack->id),
ntohl(iack->creatorid));
ND_PRINT((ndo, "\n\tid: %016jx creatorid: %08x",
(uintmax_t)be64toh(iack->id), ntohl(iack->creatorid)));
}
static void
pfsync_print_upd_c(const void *bp)
pfsync_print_upd_c(netdissect_options *ndo, const void *bp)
{
const struct pfsync_upd_c *u = bp;
printf("\n\tid: %016jx creatorid: %08x", (uintmax_t )be64toh(u->id),
ntohl(u->creatorid));
ND_PRINT((ndo, "\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);
ND_PRINT((ndo, "\n\tTCP? :"));
print_src_dst(ndo, &u->src, &u->dst, IPPROTO_TCP);
}
}
static void
pfsync_print_upd_req(const void *bp)
pfsync_print_upd_req(netdissect_options *ndo, const void *bp)
{
const struct pfsync_upd_req *ur = bp;
printf("\n\tid: %016jx creatorid: %08x", (uintmax_t )be64toh(ur->id),
ntohl(ur->creatorid));
ND_PRINT((ndo, "\n\tid: %016jx creatorid: %08x",
(uintmax_t)be64toh(ur->id), ntohl(ur->creatorid)));
}
static void
pfsync_print_del_c(const void *bp)
pfsync_print_del_c(netdissect_options *ndo, const void *bp)
{
const struct pfsync_del_c *d = bp;
printf("\n\tid: %016jx creatorid: %08x", (uintmax_t )be64toh(d->id),
ntohl(d->creatorid));
ND_PRINT((ndo, "\n\tid: %016jx creatorid: %08x",
(uintmax_t)be64toh(d->id), ntohl(d->creatorid)));
}
static void
pfsync_print_bus(const void *bp)
pfsync_print_bus(netdissect_options *ndo, const void *bp)
{
const struct pfsync_bus *b = bp;
uint32_t endtime;
@ -278,95 +284,95 @@ pfsync_print_bus(const void *bp)
break;
}
printf("\n\tcreatorid: %08x age: %.2u:%.2u:%.2u status: %s",
htonl(b->creatorid), endtime, min, sec, status);
ND_PRINT((ndo, "\n\tcreatorid: %08x age: %.2u:%.2u:%.2u status: %s",
htonl(b->creatorid), endtime, min, sec, status));
}
static void
pfsync_print_tdb(const void *bp)
pfsync_print_tdb(netdissect_options *ndo, const void *bp)
{
const struct pfsync_tdb *t = bp;
printf("\n\tspi: 0x%08x rpl: %ju cur_bytes: %ju",
ND_PRINT((ndo, "\n\tspi: 0x%08x rpl: %ju cur_bytes: %ju",
ntohl(t->spi), (uintmax_t )be64toh(t->rpl),
(uintmax_t )be64toh(t->cur_bytes));
(uintmax_t )be64toh(t->cur_bytes)));
}
static void
print_host(struct pf_addr *addr, uint16_t port, sa_family_t af,
const char *proto)
print_host(netdissect_options *ndo, 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("?");
ND_PRINT((ndo, "?"));
else
printf("%s", buf);
ND_PRINT((ndo, "%s", buf));
if (port)
printf(".%hu", ntohs(port));
ND_PRINT((ndo, ".%hu", ntohs(port)));
}
static void
print_seq(const struct pfsync_state_peer *p)
print_seq(netdissect_options *ndo, 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));
ND_PRINT((ndo, "[%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));
ND_PRINT((ndo, "[%u + %u]", ntohl(p->seqlo),
ntohl(p->seqhi) - ntohl(p->seqlo)));
}
static void
print_src_dst(const struct pfsync_state_peer *src,
print_src_dst(netdissect_options *ndo, 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]);
ND_PRINT((ndo, " %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");
ND_PRINT((ndo, " PROXY:SRC"));
else if (src->state == PF_TCPS_PROXY_DST ||
dst->state == PF_TCPS_PROXY_DST)
printf(" PROXY:DST");
ND_PRINT((ndo, " PROXY:DST"));
else
printf(" <BAD STATE LEVELS %u:%u>",
src->state, dst->state);
ND_PRINT((ndo, " <BAD STATE LEVELS %u:%u>",
src->state, dst->state));
if (vflag > 1) {
printf("\n\t");
print_seq(src);
ND_PRINT((ndo, "\n\t"));
print_seq(ndo, src);
if (src->wscale && dst->wscale)
printf(" wscale %u",
src->wscale & PF_WSCALE_MASK);
printf(" ");
print_seq(dst);
ND_PRINT((ndo, " wscale %u",
src->wscale & PF_WSCALE_MASK));
ND_PRINT((ndo, " "));
print_seq(ndo, dst);
if (src->wscale && dst->wscale)
printf(" wscale %u",
dst->wscale & PF_WSCALE_MASK);
ND_PRINT((ndo, " 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]);
ND_PRINT((ndo, " %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]);
ND_PRINT((ndo, " %s:%s", states[src->state], states[dst->state]));
} else {
printf(" %u:%u", src->state, dst->state);
ND_PRINT((ndo, " %u:%u", src->state, dst->state));
}
}
static void
print_state(struct pfsync_state *s)
print_state(netdissect_options *ndo, struct pfsync_state *s)
{
struct pfsync_state_peer *src, *dst;
struct pfsync_state_key *sk, *nk;
@ -387,29 +393,29 @@ print_state(struct pfsync_state *s)
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);
ND_PRINT((ndo, "\t%s ", s->ifname));
ND_PRINT((ndo, "proto %u ", s->proto));
print_host(&nk->addr[1], nk->port[1], s->af, NULL);
print_host(ndo, &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(")");
ND_PRINT((ndo, " ("));
print_host(ndo, &sk->addr[1], sk->port[1], s->af, NULL);
ND_PRINT((ndo, ")"));
}
if (s->direction == PF_OUT)
printf(" -> ");
ND_PRINT((ndo, " -> "));
else
printf(" <- ");
print_host(&nk->addr[0], nk->port[0], s->af, NULL);
ND_PRINT((ndo, " <- "));
print_host(ndo, &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(")");
ND_PRINT((ndo, " ("));
print_host(ndo, &sk->addr[0], sk->port[0], s->af, NULL);
ND_PRINT((ndo, ")"));
}
print_src_dst(src, dst, s->proto);
print_src_dst(ndo, src, dst, s->proto);
if (vflag > 1) {
uint64_t packets[2];
@ -421,30 +427,30 @@ print_state(struct pfsync_state *s)
creation /= 60;
min = creation % 60;
creation /= 60;
printf("\n\tage %.2u:%.2u:%.2u", creation, min, sec);
ND_PRINT((ndo, "\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);
ND_PRINT((ndo, ", 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",
ND_PRINT((ndo, ", %ju:%ju pkts, %ju:%ju bytes",
be64toh(packets[0]), be64toh(packets[1]),
be64toh(bytes[0]), be64toh(bytes[1]));
be64toh(bytes[0]), be64toh(bytes[1])));
if (s->anchor != ntohl(-1))
printf(", anchor %u", ntohl(s->anchor));
ND_PRINT((ndo, ", anchor %u", ntohl(s->anchor)));
if (s->rule != ntohl(-1))
printf(", rule %u", ntohl(s->rule));
ND_PRINT((ndo, ", 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));
ND_PRINT((ndo, "\n\tid: %016jx creatorid: %08x",
(uintmax_t )be64toh(id), ntohl(s->creatorid)));
}
}