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netfilter: nf_nat: register NAT helpers.

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Register amanda, ftp, irc, sip and tftp NAT helpers.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Flavio Leitner 2019-04-17 11:46:16 -03:00 committed by Pablo Neira Ayuso
parent 08010a2160
commit 53b11308a1
5 changed files with 39 additions and 6 deletions
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9
net/netfilter/nf_nat_amanda.c
View File

@ -19,10 +19,15 @@
#include <net/netfilter/nf_nat_helper.h>
#include <linux/netfilter/nf_conntrack_amanda.h>
#define NAT_HELPER_NAME "amanda"
MODULE_AUTHOR("Brian J. Murrell <netfilter@interlinx.bc.ca>");
MODULE_DESCRIPTION("Amanda NAT helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS_NF_NAT_HELPER("amanda");
MODULE_ALIAS_NF_NAT_HELPER(NAT_HELPER_NAME);
static struct nf_conntrack_nat_helper nat_helper_amanda =
NF_CT_NAT_HELPER_INIT(NAT_HELPER_NAME);
static unsigned int help(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
@ -74,6 +79,7 @@ static unsigned int help(struct sk_buff *skb,
static void __exit nf_nat_amanda_fini(void)
{
nf_nat_helper_unregister(&nat_helper_amanda);
RCU_INIT_POINTER(nf_nat_amanda_hook, NULL);
synchronize_rcu();
}
@ -81,6 +87,7 @@ static void __exit nf_nat_amanda_fini(void)
static int __init nf_nat_amanda_init(void)
{
BUG_ON(nf_nat_amanda_hook != NULL);
nf_nat_helper_register(&nat_helper_amanda);
RCU_INIT_POINTER(nf_nat_amanda_hook, help);
return 0;
}

9
net/netfilter/nf_nat_ftp.c
View File

@ -21,13 +21,18 @@
#include <net/netfilter/nf_conntrack_expect.h>
#include <linux/netfilter/nf_conntrack_ftp.h>
#define NAT_HELPER_NAME "ftp"
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Rusty Russell <rusty@rustcorp.com.au>");
MODULE_DESCRIPTION("ftp NAT helper");
MODULE_ALIAS_NF_NAT_HELPER("ftp");
MODULE_ALIAS_NF_NAT_HELPER(NAT_HELPER_NAME);
/* FIXME: Time out? --RR */
static struct nf_conntrack_nat_helper nat_helper_ftp =
NF_CT_NAT_HELPER_INIT(NAT_HELPER_NAME);
static int nf_nat_ftp_fmt_cmd(struct nf_conn *ct, enum nf_ct_ftp_type type,
char *buffer, size_t buflen,
union nf_inet_addr *addr, u16 port)
@ -124,6 +129,7 @@ out:
static void __exit nf_nat_ftp_fini(void)
{
nf_nat_helper_unregister(&nat_helper_ftp);
RCU_INIT_POINTER(nf_nat_ftp_hook, NULL);
synchronize_rcu();
}
@ -131,6 +137,7 @@ static void __exit nf_nat_ftp_fini(void)
static int __init nf_nat_ftp_init(void)
{
BUG_ON(nf_nat_ftp_hook != NULL);
nf_nat_helper_register(&nat_helper_ftp);
RCU_INIT_POINTER(nf_nat_ftp_hook, nf_nat_ftp);
return 0;
}

9
net/netfilter/nf_nat_irc.c
View File

@ -23,10 +23,15 @@
#include <net/netfilter/nf_conntrack_expect.h>
#include <linux/netfilter/nf_conntrack_irc.h>
#define NAT_HELPER_NAME "irc"
MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
MODULE_DESCRIPTION("IRC (DCC) NAT helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS_NF_NAT_HELPER("irc");
MODULE_ALIAS_NF_NAT_HELPER(NAT_HELPER_NAME);
static struct nf_conntrack_nat_helper nat_helper_irc =
NF_CT_NAT_HELPER_INIT(NAT_HELPER_NAME);
static unsigned int help(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
@ -96,6 +101,7 @@ static unsigned int help(struct sk_buff *skb,
static void __exit nf_nat_irc_fini(void)
{
nf_nat_helper_unregister(&nat_helper_irc);
RCU_INIT_POINTER(nf_nat_irc_hook, NULL);
synchronize_rcu();
}
@ -103,6 +109,7 @@ static void __exit nf_nat_irc_fini(void)
static int __init nf_nat_irc_init(void)
{
BUG_ON(nf_nat_irc_hook != NULL);
nf_nat_helper_register(&nat_helper_irc);
RCU_INIT_POINTER(nf_nat_irc_hook, help);
return 0;
}

9
net/netfilter/nf_nat_sip.c
View File

@ -24,11 +24,15 @@
#include <net/netfilter/nf_conntrack_seqadj.h>
#include <linux/netfilter/nf_conntrack_sip.h>
#define NAT_HELPER_NAME "sip"
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Christian Hentschel <chentschel@arnet.com.ar>");
MODULE_DESCRIPTION("SIP NAT helper");
MODULE_ALIAS_NF_NAT_HELPER("sip");
MODULE_ALIAS_NF_NAT_HELPER(NAT_HELPER_NAME);
static struct nf_conntrack_nat_helper nat_helper_sip =
NF_CT_NAT_HELPER_INIT(NAT_HELPER_NAME);
static unsigned int mangle_packet(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
@ -656,8 +660,8 @@ static struct nf_ct_helper_expectfn sip_nat = {
static void __exit nf_nat_sip_fini(void)
{
nf_nat_helper_unregister(&nat_helper_sip);
RCU_INIT_POINTER(nf_nat_sip_hooks, NULL);
nf_ct_helper_expectfn_unregister(&sip_nat);
synchronize_rcu();
}
@ -675,6 +679,7 @@ static const struct nf_nat_sip_hooks sip_hooks = {
static int __init nf_nat_sip_init(void)
{
BUG_ON(nf_nat_sip_hooks != NULL);
nf_nat_helper_register(&nat_helper_sip);
RCU_INIT_POINTER(nf_nat_sip_hooks, &sip_hooks);
nf_ct_helper_expectfn_register(&sip_nat);
return 0;

9
net/netfilter/nf_nat_tftp.c
View File

@ -13,10 +13,15 @@
#include <net/netfilter/nf_nat_helper.h>
#include <linux/netfilter/nf_conntrack_tftp.h>
#define NAT_HELPER_NAME "tftp"
MODULE_AUTHOR("Magnus Boden <mb@ozaba.mine.nu>");
MODULE_DESCRIPTION("TFTP NAT helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS_NF_NAT_HELPER("tftp");
MODULE_ALIAS_NF_NAT_HELPER(NAT_HELPER_NAME);
static struct nf_conntrack_nat_helper nat_helper_tftp =
NF_CT_NAT_HELPER_INIT(NAT_HELPER_NAME);
static unsigned int help(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
@ -37,6 +42,7 @@ static unsigned int help(struct sk_buff *skb,
static void __exit nf_nat_tftp_fini(void)
{
nf_nat_helper_unregister(&nat_helper_tftp);
RCU_INIT_POINTER(nf_nat_tftp_hook, NULL);
synchronize_rcu();
}
@ -44,6 +50,7 @@ static void __exit nf_nat_tftp_fini(void)
static int __init nf_nat_tftp_init(void)
{
BUG_ON(nf_nat_tftp_hook != NULL);
nf_nat_helper_register(&nat_helper_tftp);
RCU_INIT_POINTER(nf_nat_tftp_hook, help);
return 0;
}