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[NETFILTER]: xt_conntrack: clean up overly long lines

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Also fix some whitespace errors and use the NAT bits instead of deriving
the state manually.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2006-09-20 11:58:17 -07:00 committed by David S. Miller
parent df0933dcb0
commit 50b9f1d509
1 changed files with 105 additions and 88 deletions
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179
net/netfilter/xt_conntrack.c
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@ -45,7 +45,7 @@ match(const struct sk_buff *skb,
ct = ip_conntrack_get((struct sk_buff *)skb, &ctinfo); 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) if (ct == &ip_conntrack_untracked)
statebit = XT_CONNTRACK_STATE_UNTRACKED; statebit = XT_CONNTRACK_STATE_UNTRACKED;
@ -54,63 +54,72 @@ match(const struct sk_buff *skb,
else else
statebit = XT_CONNTRACK_STATE_INVALID; statebit = XT_CONNTRACK_STATE_INVALID;
if(sinfo->flags & XT_CONNTRACK_STATE) { if (sinfo->flags & XT_CONNTRACK_STATE) {
if (ct) { if (ct) {
if(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip != if (test_bit(IPS_SRC_NAT_BIT, &ct->status))
ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip)
statebit |= XT_CONNTRACK_STATE_SNAT; statebit |= XT_CONNTRACK_STATE_SNAT;
if (test_bit(IPS_DST_NAT_BIT, &ct->status))
if(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip !=
ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip)
statebit |= XT_CONNTRACK_STATE_DNAT; statebit |= XT_CONNTRACK_STATE_DNAT;
} }
if (FWINV((statebit & sinfo->statemask) == 0,
if (FWINV((statebit & sinfo->statemask) == 0, XT_CONNTRACK_STATE)) XT_CONNTRACK_STATE))
return 0; return 0;
} }
if(sinfo->flags & XT_CONNTRACK_PROTO) { if (ct == NULL) {
if (!ct || FWINV(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum != sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum, XT_CONNTRACK_PROTO)) if (sinfo->flags & ~XT_CONNTRACK_STATE)
return 0; return 0;
return 1;
} }
if(sinfo->flags & XT_CONNTRACK_ORIGSRC) { if (sinfo->flags & XT_CONNTRACK_PROTO &&
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)) 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_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_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_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 (sinfo->flags & XT_CONNTRACK_STATUS &&
FWINV((ct->status & sinfo->statusmask) == 0,
XT_CONNTRACK_STATUS))
return 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))
return 0; return 0;
} }
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_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_STATUS) {
if (!ct || FWINV((ct->status & sinfo->statusmask) == 0, XT_CONNTRACK_STATUS))
return 0;
}
if(sinfo->flags & XT_CONNTRACK_EXPIRES) {
unsigned long expires;
if(!ct)
return 0;
expires = timer_pending(&ct->timeout) ? (ct->timeout.expires - jiffies)/HZ : 0;
if (FWINV(!(expires >= sinfo->expires_min && expires <= sinfo->expires_max), XT_CONNTRACK_EXPIRES))
return 0;
}
return 1; return 1;
} }
@ -141,63 +150,72 @@ match(const struct sk_buff *skb,
else else
statebit = XT_CONNTRACK_STATE_INVALID; statebit = XT_CONNTRACK_STATE_INVALID;
if(sinfo->flags & XT_CONNTRACK_STATE) { if (sinfo->flags & XT_CONNTRACK_STATE) {
if (ct) { if (ct) {
if(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip != if (test_bit(IPS_SRC_NAT_BIT, &ct->status))
ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip)
statebit |= XT_CONNTRACK_STATE_SNAT; statebit |= XT_CONNTRACK_STATE_SNAT;
if (test_bit(IPS_DST_NAT_BIT, &ct->status))
if(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip !=
ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip)
statebit |= XT_CONNTRACK_STATE_DNAT; statebit |= XT_CONNTRACK_STATE_DNAT;
} }
if (FWINV((statebit & sinfo->statemask) == 0,
if (FWINV((statebit & sinfo->statemask) == 0, XT_CONNTRACK_STATE)) XT_CONNTRACK_STATE))
return 0; return 0;
} }
if(sinfo->flags & XT_CONNTRACK_PROTO) { if (ct == NULL) {
if (!ct || FWINV(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum != sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum, XT_CONNTRACK_PROTO)) if (sinfo->flags & ~XT_CONNTRACK_STATE)
return 0; return 0;
return 1;
} }
if(sinfo->flags & XT_CONNTRACK_ORIGSRC) { if (sinfo->flags & XT_CONNTRACK_PROTO &&
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)) FWINV(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum !=
sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum,
XT_CONNTRACK_PROTO))
return 0; return 0;
}
if(sinfo->flags & XT_CONNTRACK_ORIGDST) { if (sinfo->flags & XT_CONNTRACK_ORIGSRC &&
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)) 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; return 0;
}
if(sinfo->flags & XT_CONNTRACK_REPLSRC) { if (sinfo->flags & XT_CONNTRACK_ORIGDST &&
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)) 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; return 0;
}
if(sinfo->flags & XT_CONNTRACK_REPLDST) { if (sinfo->flags & XT_CONNTRACK_REPLSRC &&
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)) 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; return 0;
}
if(sinfo->flags & XT_CONNTRACK_STATUS) { if (sinfo->flags & XT_CONNTRACK_REPLDST &&
if (!ct || FWINV((ct->status & sinfo->statusmask) == 0, XT_CONNTRACK_STATUS)) 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_STATUS &&
FWINV((ct->status & sinfo->statusmask) == 0,
XT_CONNTRACK_STATUS))
return 0; return 0;
}
if(sinfo->flags & XT_CONNTRACK_EXPIRES) { if(sinfo->flags & XT_CONNTRACK_EXPIRES) {
unsigned long expires; unsigned long expires = timer_pending(&ct->timeout) ?
(ct->timeout.expires - jiffies)/HZ : 0;
if(!ct) if (FWINV(!(expires >= sinfo->expires_min &&
return 0; expires <= sinfo->expires_max),
XT_CONNTRACK_EXPIRES))
expires = timer_pending(&ct->timeout) ? (ct->timeout.expires - jiffies)/HZ : 0;
if (FWINV(!(expires >= sinfo->expires_min && expires <= sinfo->expires_max), XT_CONNTRACK_EXPIRES))
return 0; return 0;
} }
return 1; return 1;
} }
@ -220,8 +238,7 @@ checkentry(const char *tablename,
return 1; return 1;
} }
static void static void destroy(const struct xt_match *match, void *matchinfo)
destroy(const struct xt_match *match, void *matchinfo)
{ {
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
nf_ct_l3proto_module_put(match->family); nf_ct_l3proto_module_put(match->family);