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yaml
---
r: 34699
b: refs/heads/master
c: 50b9f1d
h: refs/heads/master
i:
  34697: 6a606b7
  34695: 8d63a24
v: v3
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Patrick McHardy authored and David S. Miller committed Sep 22, 2006
1 parent 8d44ebc commit 889a627
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Showing 2 changed files with 99 additions and 82 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: df0933dcb027e156cb5253570ad694b81bd52b69
refs/heads/master: 50b9f1d509eb998db73cd769c9511186474f566e
179 changes: 98 additions & 81 deletions trunk/net/netfilter/xt_conntrack.c
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,7 @@ match(const struct sk_buff *skb,

ct = ip_conntrack_get((struct sk_buff *)skb, &ctinfo);

#define FWINV(bool,invflg) ((bool) ^ !!(sinfo->invflags & invflg))
#define FWINV(bool, invflg) ((bool) ^ !!(sinfo->invflags & invflg))

if (ct == &ip_conntrack_untracked)
statebit = XT_CONNTRACK_STATE_UNTRACKED;
Expand All @@ -54,63 +54,72 @@ match(const struct sk_buff *skb,
else
statebit = XT_CONNTRACK_STATE_INVALID;

if(sinfo->flags & XT_CONNTRACK_STATE) {
if (sinfo->flags & XT_CONNTRACK_STATE) {
if (ct) {
if(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip !=
ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip)
if (test_bit(IPS_SRC_NAT_BIT, &ct->status))
statebit |= XT_CONNTRACK_STATE_SNAT;

if(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip !=
ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip)
if (test_bit(IPS_DST_NAT_BIT, &ct->status))
statebit |= XT_CONNTRACK_STATE_DNAT;
}

if (FWINV((statebit & sinfo->statemask) == 0, XT_CONNTRACK_STATE))
if (FWINV((statebit & sinfo->statemask) == 0,
XT_CONNTRACK_STATE))
return 0;
}

if(sinfo->flags & XT_CONNTRACK_PROTO) {
if (!ct || FWINV(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum != sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum, XT_CONNTRACK_PROTO))
return 0;
}

if(sinfo->flags & XT_CONNTRACK_ORIGSRC) {
if (!ct || FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip&sinfo->sipmsk[IP_CT_DIR_ORIGINAL].s_addr) != sinfo->tuple[IP_CT_DIR_ORIGINAL].src.ip, XT_CONNTRACK_ORIGSRC))
if (ct == NULL) {
if (sinfo->flags & ~XT_CONNTRACK_STATE)
return 0;
return 1;
}

if(sinfo->flags & XT_CONNTRACK_ORIGDST) {
if (!ct || FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip&sinfo->dipmsk[IP_CT_DIR_ORIGINAL].s_addr) != sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.ip, XT_CONNTRACK_ORIGDST))
return 0;
}

if(sinfo->flags & XT_CONNTRACK_REPLSRC) {
if (!ct || FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip&sinfo->sipmsk[IP_CT_DIR_REPLY].s_addr) != sinfo->tuple[IP_CT_DIR_REPLY].src.ip, XT_CONNTRACK_REPLSRC))
return 0;
}
if (sinfo->flags & XT_CONNTRACK_PROTO &&
FWINV(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum !=
sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum,
XT_CONNTRACK_PROTO))
return 0;

if (sinfo->flags & XT_CONNTRACK_ORIGSRC &&
FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip &
sinfo->sipmsk[IP_CT_DIR_ORIGINAL].s_addr) !=
sinfo->tuple[IP_CT_DIR_ORIGINAL].src.ip,
XT_CONNTRACK_ORIGSRC))
return 0;

if(sinfo->flags & XT_CONNTRACK_REPLDST) {
if (!ct || FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip&sinfo->dipmsk[IP_CT_DIR_REPLY].s_addr) != sinfo->tuple[IP_CT_DIR_REPLY].dst.ip, XT_CONNTRACK_REPLDST))
return 0;
}
if (sinfo->flags & XT_CONNTRACK_ORIGDST &&
FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip &
sinfo->dipmsk[IP_CT_DIR_ORIGINAL].s_addr) !=
sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.ip,
XT_CONNTRACK_ORIGDST))
return 0;

if(sinfo->flags & XT_CONNTRACK_STATUS) {
if (!ct || FWINV((ct->status & sinfo->statusmask) == 0, XT_CONNTRACK_STATUS))
return 0;
}
if (sinfo->flags & XT_CONNTRACK_REPLSRC &&
FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip &
sinfo->sipmsk[IP_CT_DIR_REPLY].s_addr) !=
sinfo->tuple[IP_CT_DIR_REPLY].src.ip,
XT_CONNTRACK_REPLSRC))
return 0;

if(sinfo->flags & XT_CONNTRACK_EXPIRES) {
unsigned long expires;
if (sinfo->flags & XT_CONNTRACK_REPLDST &&
FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip &
sinfo->dipmsk[IP_CT_DIR_REPLY].s_addr) !=
sinfo->tuple[IP_CT_DIR_REPLY].dst.ip,
XT_CONNTRACK_REPLDST))
return 0;

if(!ct)
return 0;
if (sinfo->flags & XT_CONNTRACK_STATUS &&
FWINV((ct->status & sinfo->statusmask) == 0,
XT_CONNTRACK_STATUS))
return 0;

expires = timer_pending(&ct->timeout) ? (ct->timeout.expires - jiffies)/HZ : 0;
if (sinfo->flags & XT_CONNTRACK_EXPIRES) {
unsigned long expires = timer_pending(&ct->timeout) ?
(ct->timeout.expires - jiffies)/HZ : 0;

if (FWINV(!(expires >= sinfo->expires_min && expires <= sinfo->expires_max), XT_CONNTRACK_EXPIRES))
if (FWINV(!(expires >= sinfo->expires_min &&
expires <= sinfo->expires_max),
XT_CONNTRACK_EXPIRES))
return 0;
}

return 1;
}

Expand Down Expand Up @@ -141,63 +150,72 @@ match(const struct sk_buff *skb,
else
statebit = XT_CONNTRACK_STATE_INVALID;

if(sinfo->flags & XT_CONNTRACK_STATE) {
if (sinfo->flags & XT_CONNTRACK_STATE) {
if (ct) {
if(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip !=
ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip)
if (test_bit(IPS_SRC_NAT_BIT, &ct->status))
statebit |= XT_CONNTRACK_STATE_SNAT;

if(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip !=
ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip)
if (test_bit(IPS_DST_NAT_BIT, &ct->status))
statebit |= XT_CONNTRACK_STATE_DNAT;
}

if (FWINV((statebit & sinfo->statemask) == 0, XT_CONNTRACK_STATE))
if (FWINV((statebit & sinfo->statemask) == 0,
XT_CONNTRACK_STATE))
return 0;
}

if(sinfo->flags & XT_CONNTRACK_PROTO) {
if (!ct || FWINV(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum != sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum, XT_CONNTRACK_PROTO))
return 0;
}

if(sinfo->flags & XT_CONNTRACK_ORIGSRC) {
if (!ct || FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip&sinfo->sipmsk[IP_CT_DIR_ORIGINAL].s_addr) != sinfo->tuple[IP_CT_DIR_ORIGINAL].src.ip, XT_CONNTRACK_ORIGSRC))
if (ct == NULL) {
if (sinfo->flags & ~XT_CONNTRACK_STATE)
return 0;
return 1;
}

if(sinfo->flags & XT_CONNTRACK_ORIGDST) {
if (!ct || FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip&sinfo->dipmsk[IP_CT_DIR_ORIGINAL].s_addr) != sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.ip, XT_CONNTRACK_ORIGDST))
return 0;
}

if(sinfo->flags & XT_CONNTRACK_REPLSRC) {
if (!ct || FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip&sinfo->sipmsk[IP_CT_DIR_REPLY].s_addr) != sinfo->tuple[IP_CT_DIR_REPLY].src.ip, XT_CONNTRACK_REPLSRC))
return 0;
}
if (sinfo->flags & XT_CONNTRACK_PROTO &&
FWINV(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum !=
sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum,
XT_CONNTRACK_PROTO))
return 0;

if (sinfo->flags & XT_CONNTRACK_ORIGSRC &&
FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip &
sinfo->sipmsk[IP_CT_DIR_ORIGINAL].s_addr) !=
sinfo->tuple[IP_CT_DIR_ORIGINAL].src.ip,
XT_CONNTRACK_ORIGSRC))
return 0;

if(sinfo->flags & XT_CONNTRACK_REPLDST) {
if (!ct || FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip&sinfo->dipmsk[IP_CT_DIR_REPLY].s_addr) != sinfo->tuple[IP_CT_DIR_REPLY].dst.ip, XT_CONNTRACK_REPLDST))
return 0;
}
if (sinfo->flags & XT_CONNTRACK_ORIGDST &&
FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip &
sinfo->dipmsk[IP_CT_DIR_ORIGINAL].s_addr) !=
sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.ip,
XT_CONNTRACK_ORIGDST))
return 0;

if(sinfo->flags & XT_CONNTRACK_STATUS) {
if (!ct || FWINV((ct->status & sinfo->statusmask) == 0, XT_CONNTRACK_STATUS))
return 0;
}
if (sinfo->flags & XT_CONNTRACK_REPLSRC &&
FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip &
sinfo->sipmsk[IP_CT_DIR_REPLY].s_addr) !=
sinfo->tuple[IP_CT_DIR_REPLY].src.ip,
XT_CONNTRACK_REPLSRC))
return 0;

if(sinfo->flags & XT_CONNTRACK_EXPIRES) {
unsigned long expires;
if (sinfo->flags & XT_CONNTRACK_REPLDST &&
FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip &
sinfo->dipmsk[IP_CT_DIR_REPLY].s_addr) !=
sinfo->tuple[IP_CT_DIR_REPLY].dst.ip,
XT_CONNTRACK_REPLDST))
return 0;

if(!ct)
return 0;
if (sinfo->flags & XT_CONNTRACK_STATUS &&
FWINV((ct->status & sinfo->statusmask) == 0,
XT_CONNTRACK_STATUS))
return 0;

expires = timer_pending(&ct->timeout) ? (ct->timeout.expires - jiffies)/HZ : 0;
if(sinfo->flags & XT_CONNTRACK_EXPIRES) {
unsigned long expires = timer_pending(&ct->timeout) ?
(ct->timeout.expires - jiffies)/HZ : 0;

if (FWINV(!(expires >= sinfo->expires_min && expires <= sinfo->expires_max), XT_CONNTRACK_EXPIRES))
if (FWINV(!(expires >= sinfo->expires_min &&
expires <= sinfo->expires_max),
XT_CONNTRACK_EXPIRES))
return 0;
}

return 1;
}

Expand All @@ -220,8 +238,7 @@ checkentry(const char *tablename,
return 1;
}

static void
destroy(const struct xt_match *match, void *matchinfo)
static void destroy(const struct xt_match *match, void *matchinfo)
{
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
nf_ct_l3proto_module_put(match->family);
Expand Down

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