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pf_ioctl.c Revision 1.153 Sun Aug 7 11:37:33 2005 UTC by dhartmei
 | verify ticket in DIOCADDADDR, from Boris Polevoy, ok deraadt@

 pf_ioctl.c Revision 1.158 Mon Sep 5 14:51:08 2005 UTC by dhartmei
 | in DIOCCHANGERULE, properly initialize table, if used in NAT rule.
 | from Boris Polevoy <vapcom at mail dot ru>, ok mcbride@

 pf.c Revision 1.502 Mon Aug 22 11:54:25 2005 UTC by dhartmei
 | when nat'ing icmp 'connections', replace icmp id with proxy values
 | (similar to proxy ports for tcp/udp). not all clients use
 | per-invokation random ids, this allows multiple concurrent
 | connections from such clients.
 | thanks for testing to Rod Whitworth, "looks ok" markus@

 pf.c Revision 1.501 Mon Aug 22 09:48:05 2005 UTC by dhartmei
 | fix rdr to bitmask replacement address pool. patch from Max Laier,
 | reported by Boris Polevoy, tested by Jean Debogue, ok henning@

Obtained from:	OpenBSD
MFC after:	3 days
This commit is contained in:
mlaier 2005-09-08 15:06:52 +00:00
parent bf3056c071
commit aa70783c83
2 changed files with 67 additions and 21 deletions
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81
sys/contrib/pf/net/pf.c
View File

@ -2337,6 +2337,11 @@ pf_get_sport(sa_family_t af, u_int8_t proto, struct pf_rule *r,
if (pf_map_addr(af, r, saddr, naddr, &init_addr, sn))
return (1);
if (proto == IPPROTO_ICMP) {
low = 1;
high = 65535;
}
do {
key.af = af;
key.proto = proto;
@ -2348,7 +2353,8 @@ pf_get_sport(sa_family_t af, u_int8_t proto, struct pf_rule *r,
* port search; start random, step;
* similar 2 portloop in in_pcbbind
*/
if (!(proto == IPPROTO_TCP || proto == IPPROTO_UDP)) {
if (!(proto == IPPROTO_TCP || proto == IPPROTO_UDP ||
proto == IPPROTO_ICMP)) {
key.gwy.port = dport;
if (pf_find_state_all(&key, PF_EXT_GWY, NULL) == NULL)
return (0);
@ -2604,6 +2610,11 @@ pf_get_translation(struct pf_pdesc *pd, struct mbuf *m, int off, int direction,
case PF_RDR: {
if (pf_map_addr(pd->af, r, saddr, naddr, NULL, sn))
return (NULL);
if ((r->rpool.opts & PF_POOL_TYPEMASK) ==
PF_POOL_BITMASK)
PF_POOLMASK(naddr, naddr,
&r->rpool.cur->addr.v.a.mask, daddr,
pd->af);
if (r->rpool.proxy_port[1]) {
u_int32_t tmp_nport;
@ -3631,7 +3642,7 @@ pf_test_icmp(struct pf_rule **rm, struct pf_state **sm, int direction,
struct pf_ruleset *ruleset = NULL;
struct pf_src_node *nsn = NULL;
u_short reason;
u_int16_t icmpid = 0; /* make the compiler happy */
u_int16_t icmpid, bport, nport = 0;
sa_family_t af = pd->af;
u_int8_t icmptype = 0; /* make the compiler happy */
u_int8_t icmpcode = 0; /* make the compiler happy */
@ -3681,15 +3692,21 @@ pf_test_icmp(struct pf_rule **rm, struct pf_state **sm, int direction,
r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
if (direction == PF_OUT) {
bport = nport = icmpid;
/* check outgoing packet for BINAT/NAT */
if ((nr = pf_get_translation(pd, m, off, PF_OUT, kif, &nsn,
saddr, icmpid, daddr, icmpid, &pd->naddr, NULL)) != NULL) {
saddr, icmpid, daddr, icmpid, &pd->naddr, &nport)) !=
NULL) {
PF_ACPY(&pd->baddr, saddr, af);
switch (af) {
#ifdef INET
case AF_INET:
pf_change_a(&saddr->v4.s_addr, pd->ip_sum,
pd->naddr.v4.s_addr, 0);
pd->hdr.icmp->icmp_cksum = pf_cksum_fixup(
pd->hdr.icmp->icmp_cksum, icmpid, nport, 0);
pd->hdr.icmp->icmp_id = nport;
m_copyback(m, off, ICMP_MINLEN, pd->hdr.icmp);
break;
#endif /* INET */
#ifdef INET6
@ -3705,9 +3722,11 @@ pf_test_icmp(struct pf_rule **rm, struct pf_state **sm, int direction,
pd->nat_rule = nr;
}
} else {
bport = nport = icmpid;
/* check incoming packet for BINAT/RDR */
if ((nr = pf_get_translation(pd, m, off, PF_IN, kif, &nsn,
saddr, icmpid, daddr, icmpid, &pd->naddr, NULL)) != NULL) {
saddr, icmpid, daddr, icmpid, &pd->naddr, &nport)) !=
NULL) {
PF_ACPY(&pd->baddr, daddr, af);
switch (af) {
#ifdef INET
@ -3857,24 +3876,28 @@ pf_test_icmp(struct pf_rule **rm, struct pf_state **sm, int direction,
s->af = af;
if (direction == PF_OUT) {
PF_ACPY(&s->gwy.addr, saddr, af);
s->gwy.port = icmpid;
s->gwy.port = nport;
PF_ACPY(&s->ext.addr, daddr, af);
s->ext.port = icmpid;
if (nr != NULL)
s->ext.port = 0;
if (nr != NULL) {
PF_ACPY(&s->lan.addr, &pd->baddr, af);
else
s->lan.port = bport;
} else {
PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
s->lan.port = icmpid;
s->lan.port = s->gwy.port;
}
} else {
PF_ACPY(&s->lan.addr, daddr, af);
s->lan.port = icmpid;
s->lan.port = nport;
PF_ACPY(&s->ext.addr, saddr, af);
s->ext.port = icmpid;
if (nr != NULL)
s->ext.port = 0;
if (nr != NULL) {
PF_ACPY(&s->gwy.addr, &pd->baddr, af);
else
s->gwy.port = bport;
} else {
PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
s->gwy.port = icmpid;
s->gwy.port = s->lan.port;
}
}
s->creation = time_second;
s->expire = time_second;
@ -4804,13 +4827,13 @@ pf_test_state_icmp(struct pf_state **state, int direction, struct pfi_kif *kif,
if (direction == PF_IN) {
PF_ACPY(&key.ext.addr, pd->src, key.af);
PF_ACPY(&key.gwy.addr, pd->dst, key.af);
key.ext.port = icmpid;
key.ext.port = 0;
key.gwy.port = icmpid;
} else {
PF_ACPY(&key.lan.addr, pd->src, key.af);
PF_ACPY(&key.ext.addr, pd->dst, key.af);
key.lan.port = icmpid;
key.ext.port = icmpid;
key.ext.port = 0;
}
STATE_LOOKUP();
@ -4819,7 +4842,7 @@ pf_test_state_icmp(struct pf_state **state, int direction, struct pfi_kif *kif,
(*state)->timeout = PFTM_ICMP_ERROR_REPLY;
/* translate source/destination address, if necessary */
if (PF_ANEQ(&(*state)->lan.addr, &(*state)->gwy.addr, pd->af)) {
if (STATE_TRANSLATE(*state)) {
if (direction == PF_OUT) {
switch (pd->af) {
#ifdef INET
@ -4827,6 +4850,14 @@ pf_test_state_icmp(struct pf_state **state, int direction, struct pfi_kif *kif,
pf_change_a(&saddr->v4.s_addr,
pd->ip_sum,
(*state)->gwy.addr.v4.s_addr, 0);
pd->hdr.icmp->icmp_cksum =
pf_cksum_fixup(
pd->hdr.icmp->icmp_cksum, icmpid,
(*state)->gwy.port, 0);
pd->hdr.icmp->icmp_id =
(*state)->gwy.port;
m_copyback(m, off, ICMP_MINLEN,
pd->hdr.icmp);
break;
#endif /* INET */
#ifdef INET6
@ -4847,6 +4878,14 @@ pf_test_state_icmp(struct pf_state **state, int direction, struct pfi_kif *kif,
pf_change_a(&daddr->v4.s_addr,
pd->ip_sum,
(*state)->lan.addr.v4.s_addr, 0);
pd->hdr.icmp->icmp_cksum =
pf_cksum_fixup(
pd->hdr.icmp->icmp_cksum, icmpid,
(*state)->lan.port, 0);
pd->hdr.icmp->icmp_id =
(*state)->lan.port;
m_copyback(m, off, ICMP_MINLEN,
pd->hdr.icmp);
break;
#endif /* INET */
#ifdef INET6
@ -5175,13 +5214,13 @@ pf_test_state_icmp(struct pf_state **state, int direction, struct pfi_kif *kif,
if (direction == PF_IN) {
PF_ACPY(&key.ext.addr, pd2.dst, key.af);
PF_ACPY(&key.gwy.addr, pd2.src, key.af);
key.ext.port = iih.icmp_id;
key.ext.port = 0;
key.gwy.port = iih.icmp_id;
} else {
PF_ACPY(&key.lan.addr, pd2.dst, key.af);
PF_ACPY(&key.ext.addr, pd2.src, key.af);
key.lan.port = iih.icmp_id;
key.ext.port = iih.icmp_id;
key.ext.port = 0;
}
STATE_LOOKUP();
@ -5230,13 +5269,13 @@ pf_test_state_icmp(struct pf_state **state, int direction, struct pfi_kif *kif,
if (direction == PF_IN) {
PF_ACPY(&key.ext.addr, pd2.dst, key.af);
PF_ACPY(&key.gwy.addr, pd2.src, key.af);
key.ext.port = iih.icmp6_id;
key.ext.port = 0;
key.gwy.port = iih.icmp6_id;
} else {
PF_ACPY(&key.lan.addr, pd2.dst, key.af);
PF_ACPY(&key.ext.addr, pd2.src, key.af);
key.lan.port = iih.icmp6_id;
key.ext.port = iih.icmp6_id;
key.ext.port = 0;
}
STATE_LOOKUP();

7
sys/contrib/pf/net/pf_ioctl.c
View File

@ -1769,6 +1769,9 @@ pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct proc *p)
error = EINVAL;
if (pf_anchor_setup(newrule, ruleset, pcr->anchor_call))
error = EINVAL;
TAILQ_FOREACH(pa, &pf_pabuf, entries)
if (pf_tbladdr_setup(ruleset, &pa->addr))
error = EINVAL;
if (newrule->overload_tblname[0]) {
if ((newrule->overload_tbl = pfr_attach_table(
@ -2390,6 +2393,10 @@ pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct proc *p)
case DIOCADDADDR: {
struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr;
if (pp->ticket != ticket_pabuf) {
error = EBUSY;
break;
}
#ifndef INET
if (pp->af == AF_INET) {
error = EAFNOSUPPORT;