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path: root/net/netfilter/nf_conntrack_pptp.c
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Diffstat (limited to 'net/netfilter/nf_conntrack_pptp.c')
-rw-r--r--net/netfilter/nf_conntrack_pptp.c71
1 files changed, 34 insertions, 37 deletions
diff --git a/net/netfilter/nf_conntrack_pptp.c b/net/netfilter/nf_conntrack_pptp.c
index 63dac5eb959f..b0804199ab59 100644
--- a/net/netfilter/nf_conntrack_pptp.c
+++ b/net/netfilter/nf_conntrack_pptp.c
@@ -65,7 +65,7 @@ void
struct nf_conntrack_expect *exp) __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_pptp_hook_expectfn);
-#if 0
+#ifdef DEBUG
/* PptpControlMessageType names */
const char *pptp_msg_name[] = {
"UNKNOWN_MESSAGE",
@@ -86,9 +86,6 @@ const char *pptp_msg_name[] = {
"SET_LINK_INFO"
};
EXPORT_SYMBOL(pptp_msg_name);
-#define DEBUGP(format, args...) printk(KERN_DEBUG "%s:%s: " format, __FILE__, __FUNCTION__, ## args)
-#else
-#define DEBUGP(format, args...)
#endif
#define SECS *HZ
@@ -102,7 +99,7 @@ static void pptp_expectfn(struct nf_conn *ct,
struct nf_conntrack_expect *exp)
{
typeof(nf_nat_pptp_hook_expectfn) nf_nat_pptp_expectfn;
- DEBUGP("increasing timeouts\n");
+ pr_debug("increasing timeouts\n");
/* increase timeout of GRE data channel conntrack entry */
ct->proto.gre.timeout = PPTP_GRE_TIMEOUT;
@@ -121,17 +118,17 @@ static void pptp_expectfn(struct nf_conn *ct,
/* obviously this tuple inversion only works until you do NAT */
nf_ct_invert_tuplepr(&inv_t, &exp->tuple);
- DEBUGP("trying to unexpect other dir: ");
+ pr_debug("trying to unexpect other dir: ");
NF_CT_DUMP_TUPLE(&inv_t);
exp_other = nf_ct_expect_find_get(&inv_t);
if (exp_other) {
/* delete other expectation. */
- DEBUGP("found\n");
+ pr_debug("found\n");
nf_ct_unexpect_related(exp_other);
nf_ct_expect_put(exp_other);
} else {
- DEBUGP("not found\n");
+ pr_debug("not found\n");
}
}
rcu_read_unlock();
@@ -143,13 +140,13 @@ static int destroy_sibling_or_exp(const struct nf_conntrack_tuple *t)
struct nf_conntrack_expect *exp;
struct nf_conn *sibling;
- DEBUGP("trying to timeout ct or exp for tuple ");
+ pr_debug("trying to timeout ct or exp for tuple ");
NF_CT_DUMP_TUPLE(t);
h = nf_conntrack_find_get(t);
if (h) {
sibling = nf_ct_tuplehash_to_ctrack(h);
- DEBUGP("setting timeout of conntrack %p to 0\n", sibling);
+ pr_debug("setting timeout of conntrack %p to 0\n", sibling);
sibling->proto.gre.timeout = 0;
sibling->proto.gre.stream_timeout = 0;
if (del_timer(&sibling->timeout))
@@ -159,7 +156,7 @@ static int destroy_sibling_or_exp(const struct nf_conntrack_tuple *t)
} else {
exp = nf_ct_expect_find_get(t);
if (exp) {
- DEBUGP("unexpect_related of expect %p\n", exp);
+ pr_debug("unexpect_related of expect %p\n", exp);
nf_ct_unexpect_related(exp);
nf_ct_expect_put(exp);
return 1;
@@ -182,7 +179,7 @@ static void pptp_destroy_siblings(struct nf_conn *ct)
t.src.u.gre.key = help->help.ct_pptp_info.pns_call_id;
t.dst.u.gre.key = help->help.ct_pptp_info.pac_call_id;
if (!destroy_sibling_or_exp(&t))
- DEBUGP("failed to timeout original pns->pac ct/exp\n");
+ pr_debug("failed to timeout original pns->pac ct/exp\n");
/* try reply (pac->pns) tuple */
memcpy(&t, &ct->tuplehash[IP_CT_DIR_REPLY].tuple, sizeof(t));
@@ -190,7 +187,7 @@ static void pptp_destroy_siblings(struct nf_conn *ct)
t.src.u.gre.key = help->help.ct_pptp_info.pac_call_id;
t.dst.u.gre.key = help->help.ct_pptp_info.pns_call_id;
if (!destroy_sibling_or_exp(&t))
- DEBUGP("failed to timeout reply pac->pns ct/exp\n");
+ pr_debug("failed to timeout reply pac->pns ct/exp\n");
}
/* expect GRE connections (PNS->PAC and PAC->PNS direction) */
@@ -270,7 +267,7 @@ pptp_inbound_pkt(struct sk_buff **pskb,
typeof(nf_nat_pptp_hook_inbound) nf_nat_pptp_inbound;
msg = ntohs(ctlh->messageType);
- DEBUGP("inbound control message %s\n", pptp_msg_name[msg]);
+ pr_debug("inbound control message %s\n", pptp_msg_name[msg]);
switch (msg) {
case PPTP_START_SESSION_REPLY:
@@ -305,8 +302,8 @@ pptp_inbound_pkt(struct sk_buff **pskb,
pcid = pptpReq->ocack.peersCallID;
if (info->pns_call_id != pcid)
goto invalid;
- DEBUGP("%s, CID=%X, PCID=%X\n", pptp_msg_name[msg],
- ntohs(cid), ntohs(pcid));
+ pr_debug("%s, CID=%X, PCID=%X\n", pptp_msg_name[msg],
+ ntohs(cid), ntohs(pcid));
if (pptpReq->ocack.resultCode == PPTP_OUTCALL_CONNECT) {
info->cstate = PPTP_CALL_OUT_CONF;
@@ -322,7 +319,7 @@ pptp_inbound_pkt(struct sk_buff **pskb,
goto invalid;
cid = pptpReq->icreq.callID;
- DEBUGP("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
+ pr_debug("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
info->cstate = PPTP_CALL_IN_REQ;
info->pac_call_id = cid;
break;
@@ -341,7 +338,7 @@ pptp_inbound_pkt(struct sk_buff **pskb,
if (info->pns_call_id != pcid)
goto invalid;
- DEBUGP("%s, PCID=%X\n", pptp_msg_name[msg], ntohs(pcid));
+ pr_debug("%s, PCID=%X\n", pptp_msg_name[msg], ntohs(pcid));
info->cstate = PPTP_CALL_IN_CONF;
/* we expect a GRE connection from PAC to PNS */
@@ -351,7 +348,7 @@ pptp_inbound_pkt(struct sk_buff **pskb,
case PPTP_CALL_DISCONNECT_NOTIFY:
/* server confirms disconnect */
cid = pptpReq->disc.callID;
- DEBUGP("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
+ pr_debug("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
info->cstate = PPTP_CALL_NONE;
/* untrack this call id, unexpect GRE packets */
@@ -374,11 +371,11 @@ pptp_inbound_pkt(struct sk_buff **pskb,
return NF_ACCEPT;
invalid:
- DEBUGP("invalid %s: type=%d cid=%u pcid=%u "
- "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
- msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
- msg, ntohs(cid), ntohs(pcid), info->cstate, info->sstate,
- ntohs(info->pns_call_id), ntohs(info->pac_call_id));
+ pr_debug("invalid %s: type=%d cid=%u pcid=%u "
+ "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
+ msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
+ msg, ntohs(cid), ntohs(pcid), info->cstate, info->sstate,
+ ntohs(info->pns_call_id), ntohs(info->pac_call_id));
return NF_ACCEPT;
}
@@ -396,7 +393,7 @@ pptp_outbound_pkt(struct sk_buff **pskb,
typeof(nf_nat_pptp_hook_outbound) nf_nat_pptp_outbound;
msg = ntohs(ctlh->messageType);
- DEBUGP("outbound control message %s\n", pptp_msg_name[msg]);
+ pr_debug("outbound control message %s\n", pptp_msg_name[msg]);
switch (msg) {
case PPTP_START_SESSION_REQUEST:
@@ -418,7 +415,7 @@ pptp_outbound_pkt(struct sk_buff **pskb,
info->cstate = PPTP_CALL_OUT_REQ;
/* track PNS call id */
cid = pptpReq->ocreq.callID;
- DEBUGP("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
+ pr_debug("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
info->pns_call_id = cid;
break;
@@ -432,8 +429,8 @@ pptp_outbound_pkt(struct sk_buff **pskb,
pcid = pptpReq->icack.peersCallID;
if (info->pac_call_id != pcid)
goto invalid;
- DEBUGP("%s, CID=%X PCID=%X\n", pptp_msg_name[msg],
- ntohs(cid), ntohs(pcid));
+ pr_debug("%s, CID=%X PCID=%X\n", pptp_msg_name[msg],
+ ntohs(cid), ntohs(pcid));
if (pptpReq->icack.resultCode == PPTP_INCALL_ACCEPT) {
/* part two of the three-way handshake */
@@ -469,11 +466,11 @@ pptp_outbound_pkt(struct sk_buff **pskb,
return NF_ACCEPT;
invalid:
- DEBUGP("invalid %s: type=%d cid=%u pcid=%u "
- "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
- msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
- msg, ntohs(cid), ntohs(pcid), info->cstate, info->sstate,
- ntohs(info->pns_call_id), ntohs(info->pac_call_id));
+ pr_debug("invalid %s: type=%d cid=%u pcid=%u "
+ "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
+ msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
+ msg, ntohs(cid), ntohs(pcid), info->cstate, info->sstate,
+ ntohs(info->pns_call_id), ntohs(info->pac_call_id));
return NF_ACCEPT;
}
@@ -524,7 +521,7 @@ conntrack_pptp_help(struct sk_buff **pskb, unsigned int protoff,
pptph = skb_header_pointer(*pskb, nexthdr_off, sizeof(_pptph), &_pptph);
if (!pptph) {
- DEBUGP("no full PPTP header, can't track\n");
+ pr_debug("no full PPTP header, can't track\n");
return NF_ACCEPT;
}
nexthdr_off += sizeof(_pptph);
@@ -533,7 +530,7 @@ conntrack_pptp_help(struct sk_buff **pskb, unsigned int protoff,
/* if it's not a control message we can't do anything with it */
if (ntohs(pptph->packetType) != PPTP_PACKET_CONTROL ||
ntohl(pptph->magicCookie) != PPTP_MAGIC_COOKIE) {
- DEBUGP("not a control packet\n");
+ pr_debug("not a control packet\n");
return NF_ACCEPT;
}
@@ -569,8 +566,8 @@ conntrack_pptp_help(struct sk_buff **pskb, unsigned int protoff,
/* server -> client (PAC -> PNS) */
ret = pptp_inbound_pkt(pskb, ctlh, pptpReq, reqlen, ct,
ctinfo);
- DEBUGP("sstate: %d->%d, cstate: %d->%d\n",
- oldsstate, info->sstate, oldcstate, info->cstate);
+ pr_debug("sstate: %d->%d, cstate: %d->%d\n",
+ oldsstate, info->sstate, oldcstate, info->cstate);
spin_unlock_bh(&nf_pptp_lock);
return ret;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.