Commit f587de0e authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller

[NETFILTER]: nf_conntrack/nf_nat: add H.323 helper port

Add IPv4 and IPv6 capable nf_conntrack port of the H.323 conntrack/NAT helper.
Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 16958900
#ifndef _NF_CONNTRACK_H323_H
#define _NF_CONNTRACK_H323_H
#ifdef __KERNEL__
#include <linux/netfilter/nf_conntrack_h323_asn1.h>
#define RAS_PORT 1719
#define Q931_PORT 1720
#define H323_RTP_CHANNEL_MAX 4 /* Audio, video, FAX and other */
/* This structure exists only once per master */
struct nf_ct_h323_master {
/* Original and NATed Q.931 or H.245 signal ports */
__be16 sig_port[IP_CT_DIR_MAX];
/* Original and NATed RTP ports */
__be16 rtp_port[H323_RTP_CHANNEL_MAX][IP_CT_DIR_MAX];
union {
/* RAS connection timeout */
u_int32_t timeout;
/* Next TPKT length (for separate TPKT header and data) */
u_int16_t tpkt_len[IP_CT_DIR_MAX];
};
};
struct nf_conn;
extern int get_h225_addr(struct nf_conn *ct, unsigned char *data,
TransportAddress *taddr,
union nf_conntrack_address *addr, __be16 *port);
extern void nf_conntrack_h245_expect(struct nf_conn *new,
struct nf_conntrack_expect *this);
extern void nf_conntrack_q931_expect(struct nf_conn *new,
struct nf_conntrack_expect *this);
extern int (*set_h245_addr_hook) (struct sk_buff **pskb,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
union nf_conntrack_address *addr,
__be16 port);
extern int (*set_h225_addr_hook) (struct sk_buff **pskb,
unsigned char **data, int dataoff,
TransportAddress *taddr,
union nf_conntrack_address *addr,
__be16 port);
extern int (*set_sig_addr_hook) (struct sk_buff **pskb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
TransportAddress *taddr, int count);
extern int (*set_ras_addr_hook) (struct sk_buff **pskb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
TransportAddress *taddr, int count);
extern int (*nat_rtp_rtcp_hook) (struct sk_buff **pskb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
__be16 port, __be16 rtp_port,
struct nf_conntrack_expect *rtp_exp,
struct nf_conntrack_expect *rtcp_exp);
extern int (*nat_t120_hook) (struct sk_buff **pskb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_h245_hook) (struct sk_buff **pskb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_callforwarding_hook) (struct sk_buff **pskb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
TransportAddress *taddr,
__be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_q931_hook) (struct sk_buff **pskb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, TransportAddress *taddr,
int idx, __be16 port,
struct nf_conntrack_expect *exp);
#endif
#endif
/****************************************************************************
* ip_conntrack_helper_h323_asn1.h - BER and PER decoding library for H.323
* ip_conntrack_h323_asn1.h - BER and PER decoding library for H.323
* conntrack/NAT module.
*
* Copyright (c) 2006 by Jing Min Zhao <zhaojingmin@users.sourceforge.net>
......@@ -34,13 +34,13 @@
*
****************************************************************************/
#ifndef _IP_CONNTRACK_HELPER_H323_ASN1_H_
#define _IP_CONNTRACK_HELPER_H323_ASN1_H_
#ifndef _NF_CONNTRACK_HELPER_H323_ASN1_H_
#define _NF_CONNTRACK_HELPER_H323_ASN1_H_
/*****************************************************************************
* H.323 Types
****************************************************************************/
#include "ip_conntrack_helper_h323_types.h"
#include "nf_conntrack_h323_types.h"
typedef struct {
enum {
......
......@@ -10,6 +10,11 @@ typedef struct TransportAddress_ipAddress { /* SEQUENCE */
unsigned ip;
} TransportAddress_ipAddress;
typedef struct TransportAddress_ip6Address { /* SEQUENCE */
int options; /* No use */
unsigned ip6;
} TransportAddress_ip6Address;
typedef struct TransportAddress { /* CHOICE */
enum {
eTransportAddress_ipAddress,
......@@ -22,6 +27,7 @@ typedef struct TransportAddress { /* CHOICE */
} choice;
union {
TransportAddress_ipAddress ipAddress;
TransportAddress_ip6Address ip6Address;
};
} TransportAddress;
......@@ -93,6 +99,11 @@ typedef struct UnicastAddress_iPAddress { /* SEQUENCE */
unsigned network;
} UnicastAddress_iPAddress;
typedef struct UnicastAddress_iP6Address { /* SEQUENCE */
int options; /* No use */
unsigned network;
} UnicastAddress_iP6Address;
typedef struct UnicastAddress { /* CHOICE */
enum {
eUnicastAddress_iPAddress,
......@@ -105,6 +116,7 @@ typedef struct UnicastAddress { /* CHOICE */
} choice;
union {
UnicastAddress_iPAddress iPAddress;
UnicastAddress_iP6Address iP6Address;
};
} UnicastAddress;
......
header-y += ip_conntrack_helper.h
header-y += ip_conntrack_helper_h323_asn1.h
header-y += ip_conntrack_helper_h323_types.h
header-y += ip_conntrack_protocol.h
header-y += ip_conntrack_sctp.h
header-y += ip_conntrack_tcp.h
......
......@@ -3,7 +3,7 @@
#ifdef __KERNEL__
#include <linux/netfilter_ipv4/ip_conntrack_helper_h323_asn1.h>
#include <linux/netfilter/nf_conntrack_h323_asn1.h>
#define RAS_PORT 1719
#define Q931_PORT 1720
......
......@@ -41,11 +41,13 @@ union nf_conntrack_expect_proto {
/* Add protocol helper include file here */
#include <linux/netfilter/nf_conntrack_ftp.h>
#include <linux/netfilter/nf_conntrack_h323.h>
/* per conntrack: application helper private data */
union nf_conntrack_help {
/* insert conntrack helper private data (master) here */
struct nf_ct_ftp_master ct_ftp_info;
struct nf_ct_h323_master ct_h323_info;
};
#include <linux/types.h>
......
......@@ -41,6 +41,7 @@ struct nf_conntrack_expect
unsigned int flags;
#ifdef CONFIG_NF_NAT_NEEDED
__be32 saved_ip;
/* This is the original per-proto part, used to map the
* expected connection the way the recipient expects. */
union nf_conntrack_man_proto saved_proto;
......
......@@ -529,6 +529,11 @@ config IP_NF_NAT_H323
default IP_NF_NAT if IP_NF_H323=y
default m if IP_NF_H323=m
config NF_NAT_H323
tristate
depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT
default NF_NAT && NF_CONNTRACK_H323
config IP_NF_NAT_SIP
tristate
depends on IP_NF_IPTABLES!=n && IP_NF_CONNTRACK!=n && IP_NF_NAT!=n
......
......@@ -15,7 +15,7 @@ endif
ip_conntrack_pptp-objs := ip_conntrack_helper_pptp.o ip_conntrack_proto_gre.o
ip_nat_pptp-objs := ip_nat_helper_pptp.o ip_nat_proto_gre.o
ip_conntrack_h323-objs := ip_conntrack_helper_h323.o ip_conntrack_helper_h323_asn1.o
ip_conntrack_h323-objs := ip_conntrack_helper_h323.o ../../netfilter/nf_conntrack_h323_asn1.o
ip_nat_h323-objs := ip_nat_helper_h323.o
# connection tracking
......@@ -52,6 +52,7 @@ obj-$(CONFIG_IP_NF_NAT_SIP) += ip_nat_sip.o
# NAT helpers (nf_conntrack)
obj-$(CONFIG_NF_NAT_AMANDA) += nf_nat_amanda.o
obj-$(CONFIG_NF_NAT_FTP) += nf_nat_ftp.o
obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
# generic IP tables
obj-$(CONFIG_IP_NF_IPTABLES) += ip_tables.o
......
This diff is collapsed.
......@@ -160,6 +160,25 @@ config NF_CONNTRACK_FTP
To compile it as a module, choose M here. If unsure, say N.
config NF_CONNTRACK_H323
tristate "H.323 protocol support (EXPERIMENTAL)"
depends on EXPERIMENTAL && NF_CONNTRACK
help
H.323 is a VoIP signalling protocol from ITU-T. As one of the most
important VoIP protocols, it is widely used by voice hardware and
software including voice gateways, IP phones, Netmeeting, OpenPhone,
Gnomemeeting, etc.
With this module you can support H.323 on a connection tracking/NAT
firewall.
This module supports RAS, Fast Start, H.245 Tunnelling, Call
Forwarding, RTP/RTCP and T.120 based audio, video, fax, chat,
whiteboard, file transfer, etc. For more information, please
visit http://nath323.sourceforge.net/.
To compile it as a module, choose M here. If unsure, say N.
config NF_CT_NETLINK
tristate 'Connection tracking netlink interface (EXPERIMENTAL)'
depends on EXPERIMENTAL && NF_CONNTRACK && NETFILTER_NETLINK
......
......@@ -20,8 +20,11 @@ obj-$(CONFIG_NF_CT_PROTO_SCTP) += nf_conntrack_proto_sctp.o
obj-$(CONFIG_NF_CT_NETLINK) += nf_conntrack_netlink.o
# connection tracking helpers
nf_conntrack_h323-objs := nf_conntrack_h323_main.o nf_conntrack_h323_asn1.o
obj-$(CONFIG_NF_CONNTRACK_AMANDA) += nf_conntrack_amanda.o
obj-$(CONFIG_NF_CONNTRACK_FTP) += nf_conntrack_ftp.o
obj-$(CONFIG_NF_CONNTRACK_H323) += nf_conntrack_h323.o
# generic X tables
obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o
......
......@@ -15,7 +15,7 @@
#else
#include <stdio.h>
#endif
#include <linux/netfilter_ipv4/ip_conntrack_helper_h323_asn1.h>
#include <linux/netfilter/nf_conntrack_h323_asn1.h>
/* Trace Flag */
#ifndef H323_TRACE
......@@ -144,7 +144,7 @@ static decoder_t Decoders[] = {
/****************************************************************************
* H.323 Types
****************************************************************************/
#include "ip_conntrack_helper_h323_types.c"
#include "nf_conntrack_h323_types.c"
/****************************************************************************
* Functions
......
This diff is collapsed.
......@@ -36,7 +36,8 @@ static field_t _TransportAddress_ipxAddress[] = { /* SEQUENCE */
};
static field_t _TransportAddress_ip6Address[] = { /* SEQUENCE */
{FNAME("ip") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
{FNAME("ip") OCTSTR, FIXD, 16, 0, DECODE,
offsetof(TransportAddress_ip6Address, ip6), NULL},
{FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
};
......@@ -65,8 +66,8 @@ static field_t _TransportAddress[] = { /* CHOICE */
_TransportAddress_ipSourceRoute},
{FNAME("ipxAddress") SEQ, 0, 3, 3, SKIP, 0,
_TransportAddress_ipxAddress},
{FNAME("ip6Address") SEQ, 0, 2, 2, SKIP | EXT, 0,
_TransportAddress_ip6Address},
{FNAME("ip6Address") SEQ, 0, 2, 2, DECODE | EXT,
offsetof(TransportAddress, ip6Address), _TransportAddress_ip6Address},
{FNAME("netBios") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
{FNAME("nsap") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
{FNAME("nonStandardAddress") SEQ, 0, 2, 2, SKIP, 0,
......
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