Release 4.8 net/netfilter/xt_socket.c

/*
 * Transparent proxy support for Linux/iptables
 *
 * Copyright (C) 2007-2008 BalaBit IT Ltd.
 * Author: Krisztian Kovacs
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <net/tcp.h>
#include <net/udp.h>
#include <net/icmp.h>
#include <net/sock.h>
#include <net/inet_sock.h>
#include <net/netfilter/ipv4/nf_defrag_ipv4.h>

#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)

#define XT_SOCKET_HAVE_IPV6 1
#include <linux/netfilter_ipv6/ip6_tables.h>
#include <net/inet6_hashtables.h>
#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
#endif

#include <linux/netfilter/xt_socket.h>

#if IS_ENABLED(CONFIG_NF_CONNTRACK)

#define XT_SOCKET_HAVE_CONNTRACK 1
#include <net/netfilter/nf_conntrack.h>
#endif


static int

extract_icmp4_fields(const struct sk_buff *skb,
		    u8 *protocol,
		    __be32 *raddr,
		    __be32 *laddr,
		    __be16 *rport,
		    __be16 *lport)
{
	unsigned int outside_hdrlen = ip_hdrlen(skb);
	struct iphdr *inside_iph, _inside_iph;
	struct icmphdr *icmph, _icmph;
	__be16 *ports, _ports[2];

	icmph = skb_header_pointer(skb, outside_hdrlen,
				   sizeof(_icmph), &_icmph);
	if (icmph == NULL)
		return 1;

	switch (icmph->type) {
	case ICMP_DEST_UNREACH:
	case ICMP_SOURCE_QUENCH:
	case ICMP_REDIRECT:
	case ICMP_TIME_EXCEEDED:
	case ICMP_PARAMETERPROB:
		break;
	default:
		return 1;
	}

	inside_iph = skb_header_pointer(skb, outside_hdrlen +
					sizeof(struct icmphdr),
					sizeof(_inside_iph), &_inside_iph);
	if (inside_iph == NULL)
		return 1;

	if (inside_iph->protocol != IPPROTO_TCP &&
	    inside_iph->protocol != IPPROTO_UDP)
		return 1;

	ports = skb_header_pointer(skb, outside_hdrlen +
				   sizeof(struct icmphdr) +
				   (inside_iph->ihl << 2),
				   sizeof(_ports), &_ports);
	if (ports == NULL)
		return 1;

	/* the inside IP packet is the one quoted from our side, thus
         * its saddr is the local address */
	*protocol = inside_iph->protocol;
	*laddr = inside_iph->saddr;
	*lport = ports[0];
	*raddr = inside_iph->daddr;
	*rport = ports[1];

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
kovacs krisztian
kovacs krisztian
247
99.60%
1
50.00%
balazs scheidler
balazs scheidler
1
0.40%
1
50.00%
Total
248
100.00%
2
100.00%

/* "socket" match based redirection (no specific rule)
 * ===================================================
 *
 * There are connections with dynamic endpoints (e.g. FTP data
 * connection) that the user is unable to add explicit rules
 * for. These are taken care of by a generic "socket" rule. It is
 * assumed that the proxy application is trusted to open such
 * connections without explicit iptables rule (except of course the
 * generic 'socket' rule). In this case the following sockets are
 * matched in preference order:
 *
 *   - match: if there's a fully established connection matching the
 *     _packet_ tuple
 *
 *   - match: if there's a non-zero bound listener (possibly with a
 *     non-local address) We don't accept zero-bound listeners, since
 *     then local services could intercept traffic going through the
 *     box.
 */

static struct sock *

xt_socket_get_sock_v4(struct net *net, struct sk_buff *skb, const int doff,
		      const u8 protocol,
		      const __be32 saddr, const __be32 daddr,
		      const __be16 sport, const __be16 dport,
		      const struct net_device *in)
{
	switch (protocol) {
	case IPPROTO_TCP:
		return inet_lookup(net, &tcp_hashinfo, skb, doff,
				   saddr, sport, daddr, dport,
				   in->ifindex);
	case IPPROTO_UDP:
		return udp4_lib_lookup(net, saddr, sport, daddr, dport,
				       in->ifindex);
	}
	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
florian westphal
florian westphal
92
86.79%
1
33.33%
craig gallek
craig gallek
13
12.26%
1
33.33%
eric dumazet
eric dumazet
1
0.94%
1
33.33%
Total
106
100.00%
3
100.00%



static bool xt_socket_sk_is_transparent(struct sock *sk)
{
	switch (sk->sk_state) {
	case TCP_TIME_WAIT:
		return inet_twsk(sk)->tw_transparent;

	case TCP_NEW_SYN_RECV:
		return inet_rsk(inet_reqsk(sk))->no_srccheck;

	default:
		return inet_sk(sk)->transparent;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
eric dumazet
eric dumazet
53
100.00%
1
100.00%
Total
53
100.00%
1
100.00%



static struct sock *xt_socket_lookup_slow_v4(struct net *net,
					     const struct sk_buff *skb,
					     const struct net_device *indev)
{
	const struct iphdr *iph = ip_hdr(skb);
	struct sk_buff *data_skb = NULL;
	int doff = 0;
	__be32 uninitialized_var(daddr), uninitialized_var(saddr);
	__be16 uninitialized_var(dport), uninitialized_var(sport);
	u8 uninitialized_var(protocol);
#ifdef XT_SOCKET_HAVE_CONNTRACK
	struct nf_conn const *ct;
	enum ip_conntrack_info ctinfo;
#endif

	if (iph->protocol == IPPROTO_UDP || iph->protocol == IPPROTO_TCP) {
		struct udphdr _hdr, *hp;

		hp = skb_header_pointer(skb, ip_hdrlen(skb),
					sizeof(_hdr), &_hdr);
		if (hp == NULL)
			return NULL;

		protocol = iph->protocol;
		saddr = iph->saddr;
		sport = hp->source;
		daddr = iph->daddr;
		dport = hp->dest;
		data_skb = (struct sk_buff *)skb;
		doff = iph->protocol == IPPROTO_TCP ?
			ip_hdrlen(skb) + __tcp_hdrlen((struct tcphdr *)hp) :
			ip_hdrlen(skb) + sizeof(*hp);

	} else if (iph->protocol == IPPROTO_ICMP) {
		if (extract_icmp4_fields(skb, &protocol, &saddr, &daddr,
					 &sport, &dport))
			return NULL;
	} else {
		return NULL;
	}

#ifdef XT_SOCKET_HAVE_CONNTRACK
	/* Do the lookup with the original socket address in
         * case this is a reply packet of an established
         * SNAT-ted connection.
         */
	ct = nf_ct_get(skb, &ctinfo);
	if (ct && !nf_ct_is_untracked(ct) &&
	    ((iph->protocol != IPPROTO_ICMP &&
	      ctinfo == IP_CT_ESTABLISHED_REPLY) ||
	     (iph->protocol == IPPROTO_ICMP &&
	      ctinfo == IP_CT_RELATED_REPLY)) &&
	    (ct->status & IPS_SRC_NAT_DONE)) {

		daddr = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip;
		dport = (iph->protocol == IPPROTO_TCP) ?
			ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.tcp.port :
			ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.udp.port;
	}
#endif

	return xt_socket_get_sock_v4(net, data_skb, doff, protocol, saddr,
				     daddr, sport, dport, indev);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
kovacs krisztian
kovacs krisztian
290
71.96%
1
10.00%
craig gallek
craig gallek
59
14.64%
1
10.00%
daniel borkmann
daniel borkmann
22
5.46%
1
10.00%
pablo neira ayuso
pablo neira ayuso
15
3.72%
1
10.00%
eric dumazet
eric dumazet
6
1.49%
2
20.00%
eric w. biederman
eric w. biederman
6
1.49%
1
10.00%
laszlo attila toth
laszlo attila toth
3
0.74%
1
10.00%
florian westphal
florian westphal
1
0.25%
1
10.00%
balazs scheidler
balazs scheidler
1
0.25%
1
10.00%
Total
403
100.00%
10
100.00%


static bool

socket_match(const struct sk_buff *skb, struct xt_action_param *par,
	     const struct xt_socket_mtinfo1 *info)
{
	struct sk_buff *pskb = (struct sk_buff *)skb;
	struct sock *sk = skb->sk;

	if (!sk)
		sk = xt_socket_lookup_slow_v4(par->net, skb, par->in);
	if (sk) {
		bool wildcard;
		bool transparent = true;

		/* Ignore sockets listening on INADDR_ANY,
                 * unless XT_SOCKET_NOWILDCARD is set
                 */
		wildcard = (!(info->flags & XT_SOCKET_NOWILDCARD) &&
			    sk_fullsock(sk) &&
			    inet_sk(sk)->inet_rcv_saddr == 0);

		/* Ignore non-transparent sockets,
                 * if XT_SOCKET_TRANSPARENT is used
                 */
		if (info->flags & XT_SOCKET_TRANSPARENT)
			transparent = xt_socket_sk_is_transparent(sk);

		if (info->flags & XT_SOCKET_RESTORESKMARK && !wildcard &&
		    transparent)
			pskb->mark = sk->sk_mark;

		if (sk != skb->sk)
			sock_gen_put(sk);

		if (wildcard || !transparent)
			sk = NULL;
	}

	return sk != NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
daniel borkmann
daniel borkmann
42
24.42%
1
8.33%
kovacs krisztian
kovacs krisztian
39
22.67%
1
8.33%
harout hedeshian
harout hedeshian
33
19.19%
1
8.33%
eric dumazet
eric dumazet
25
14.53%
5
41.67%
laszlo attila toth
laszlo attila toth
25
14.53%
1
8.33%
eric w. biederman
eric w. biederman
4
2.33%
1
8.33%
balazs scheidler
balazs scheidler
2
1.16%
1
8.33%
jan engelhardt
jan engelhardt
2
1.16%
1
8.33%
Total
172
100.00%
12
100.00%


static bool

socket_mt4_v0(const struct sk_buff *skb, struct xt_action_param *par)
{
	static struct xt_socket_mtinfo1 xt_info_v0 = {
		.flags = 0,
        };

	return socket_match(skb, par, &xt_info_v0);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
laszlo attila toth
laszlo attila toth
24
60.00%
1
25.00%
eric dumazet
eric dumazet
14
35.00%
1
25.00%
jan engelhardt
jan engelhardt
1
2.50%
1
25.00%
balazs scheidler
balazs scheidler
1
2.50%
1
25.00%
Total
40
100.00%
4
100.00%


static bool

socket_mt4_v1_v2_v3(const struct sk_buff *skb, struct xt_action_param *par)
{
	return socket_match(skb, par, par->matchinfo);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
laszlo attila toth
laszlo attila toth
27
93.10%
1
33.33%
harout hedeshian
harout hedeshian
1
3.45%
1
33.33%
jan engelhardt
jan engelhardt
1
3.45%
1
33.33%
Total
29
100.00%
3
100.00%

#ifdef XT_SOCKET_HAVE_IPV6


static int

extract_icmp6_fields(const struct sk_buff *skb,
		     unsigned int outside_hdrlen,
		     int *protocol,
		     const struct in6_addr **raddr,
		     const struct in6_addr **laddr,
		     __be16 *rport,
		     __be16 *lport,
		     struct ipv6hdr *ipv6_var)
{
	const struct ipv6hdr *inside_iph;
	struct icmp6hdr *icmph, _icmph;
	__be16 *ports, _ports[2];
	u8 inside_nexthdr;
	__be16 inside_fragoff;
	int inside_hdrlen;

	icmph = skb_header_pointer(skb, outside_hdrlen,
				   sizeof(_icmph), &_icmph);
	if (icmph == NULL)
		return 1;

	if (icmph->icmp6_type & ICMPV6_INFOMSG_MASK)
		return 1;

	inside_iph = skb_header_pointer(skb, outside_hdrlen + sizeof(_icmph),
					sizeof(*ipv6_var), ipv6_var);
	if (inside_iph == NULL)
		return 1;
	inside_nexthdr = inside_iph->nexthdr;

	inside_hdrlen = ipv6_skip_exthdr(skb, outside_hdrlen + sizeof(_icmph) +
					      sizeof(*ipv6_var),
					 &inside_nexthdr, &inside_fragoff);
	if (inside_hdrlen < 0)
		return 1; /* hjm: Packet has no/incomplete transport layer headers. */

	if (inside_nexthdr != IPPROTO_TCP &&
	    inside_nexthdr != IPPROTO_UDP)
		return 1;

	ports = skb_header_pointer(skb, inside_hdrlen,
				   sizeof(_ports), &_ports);
	if (ports == NULL)
		return 1;

	/* the inside IP packet is the one quoted from our side, thus
         * its saddr is the local address */
	*protocol = inside_nexthdr;
	*laddr = &inside_iph->saddr;
	*lport = ports[0];
	*raddr = &inside_iph->daddr;
	*rport = ports[1];

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
balazs scheidler
balazs scheidler
231
86.19%
1
16.67%
eric dumazet
eric dumazet
13
4.85%
1
16.67%
kovacs krisztian
kovacs krisztian
11
4.10%
1
16.67%
jesse gross
jesse gross
6
2.24%
1
16.67%
laszlo attila toth
laszlo attila toth
6
2.24%
1
16.67%
david s. miller
david s. miller
1
0.37%
1
16.67%
Total
268
100.00%
6
100.00%


static struct sock *

xt_socket_get_sock_v6(struct net *net, struct sk_buff *skb, int doff,
		      const u8 protocol,
		      const struct in6_addr *saddr, const struct in6_addr *daddr,
		      const __be16 sport, const __be16 dport,
		      const struct net_device *in)
{
	switch (protocol) {
	case IPPROTO_TCP:
		return inet6_lookup(net, &tcp_hashinfo, skb, doff,
				    saddr, sport, daddr, dport,
				    in->ifindex);
	case IPPROTO_UDP:
		return udp6_lib_lookup(net, saddr, sport, daddr, dport,
				       in->ifindex);
	}

	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
florian westphal
florian westphal
96
88.07%
1
33.33%
craig gallek
craig gallek
12
11.01%
1
33.33%
balazs scheidler
balazs scheidler
1
0.92%
1
33.33%
Total
109
100.00%
3
100.00%



static struct sock *xt_socket_lookup_slow_v6(struct net *net,
					     const struct sk_buff *skb,
					     const struct net_device *indev)
{
	__be16 uninitialized_var(dport), uninitialized_var(sport);
	const struct in6_addr *daddr = NULL, *saddr = NULL;
	struct ipv6hdr *iph = ipv6_hdr(skb);
	struct sk_buff *data_skb = NULL;
	int doff = 0;
	int thoff = 0, tproto;

	tproto = ipv6_find_hdr(skb, &thoff, -1, NULL, NULL);
	if (tproto < 0) {
		pr_debug("unable to find transport header in IPv6 packet, dropping\n");
		return NULL;
	}

	if (tproto == IPPROTO_UDP || tproto == IPPROTO_TCP) {
		struct udphdr _hdr, *hp;

		hp = skb_header_pointer(skb, thoff, sizeof(_hdr), &_hdr);
		if (hp == NULL)
			return NULL;

		saddr = &iph->saddr;
		sport = hp->source;
		daddr = &iph->daddr;
		dport = hp->dest;
		data_skb = (struct sk_buff *)skb;
		doff = tproto == IPPROTO_TCP ?
			thoff + __tcp_hdrlen((struct tcphdr *)hp) :
			thoff + sizeof(*hp);

	} else if (tproto == IPPROTO_ICMPV6) {
		struct ipv6hdr ipv6_var;

		if (extract_icmp6_fields(skb, thoff, &tproto, &saddr, &daddr,
					 &sport, &dport, &ipv6_var))
			return NULL;
	} else {
		return NULL;
	}

	return xt_socket_get_sock_v6(net, data_skb, doff, tproto, saddr, daddr,
				     sport, dport, indev);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
balazs scheidler
balazs scheidler
173
60.07%
1
11.11%
craig gallek
craig gallek
51
17.71%
1
11.11%
daniel borkmann
daniel borkmann
41
14.24%
1
11.11%
eric w. biederman
eric w. biederman
6
2.08%
1
11.11%
pablo neira ayuso
pablo neira ayuso
6
2.08%
1
11.11%
hans schillstrom
hans schillstrom
4
1.39%
1
11.11%
eric dumazet
eric dumazet
4
1.39%
1
11.11%
florian westphal
florian westphal
2
0.69%
1
11.11%
david s. miller
david s. miller
1
0.35%
1
11.11%
Total
288
100.00%
9
100.00%


static bool

socket_mt6_v1_v2_v3(const struct sk_buff *skb, struct xt_action_param *par)
{
	const struct xt_socket_mtinfo1 *info = (struct xt_socket_mtinfo1 *) par->matchinfo;
	struct sk_buff *pskb = (struct sk_buff *)skb;
	struct sock *sk = skb->sk;

	if (!sk)
		sk = xt_socket_lookup_slow_v6(par->net, skb, par->in);
	if (sk) {
		bool wildcard;
		bool transparent = true;

		/* Ignore sockets listening on INADDR_ANY
                 * unless XT_SOCKET_NOWILDCARD is set
                 */
		wildcard = (!(info->flags & XT_SOCKET_NOWILDCARD) &&
			    sk_fullsock(sk) &&
			    ipv6_addr_any(&sk->sk_v6_rcv_saddr));

		/* Ignore non-transparent sockets,
                 * if XT_SOCKET_TRANSPARENT is used
                 */
		if (info->flags & XT_SOCKET_TRANSPARENT)
			transparent = xt_socket_sk_is_transparent(sk);

		if (info->flags & XT_SOCKET_RESTORESKMARK && !wildcard &&
		    transparent)
			pskb->mark = sk->sk_mark;

		if (sk != skb->sk)
			sock_gen_put(sk);

		if (wildcard || !transparent)
			sk = NULL;
	}

	return sk != NULL;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
balazs scheidler
balazs scheidler
67
37.22%
1
11.11%
daniel borkmann
daniel borkmann
50
27.78%
1
11.11%
harout hedeshian
harout hedeshian
34
18.89%
1
11.11%
eric dumazet
eric dumazet
25
13.89%
5
55.56%
eric w. biederman
eric w. biederman
4
2.22%
1
11.11%
Total
180
100.00%
9
100.00%

#endif



static int socket_mt_v1_check(const struct xt_mtchk_param *par)
{
	const struct xt_socket_mtinfo1 *info = (struct xt_socket_mtinfo1 *) par->matchinfo;

	if (info->flags & ~XT_SOCKET_FLAGS_V1) {
		pr_info("unknown flags 0x%x\n", info->flags & ~XT_SOCKET_FLAGS_V1);
		return -EINVAL;
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
eric dumazet
eric dumazet
57
100.00%
1
100.00%
Total
57
100.00%
1
100.00%



static int socket_mt_v2_check(const struct xt_mtchk_param *par)
{
	const struct xt_socket_mtinfo2 *info = (struct xt_socket_mtinfo2 *) par->matchinfo;

	if (info->flags & ~XT_SOCKET_FLAGS_V2) {
		pr_info("unknown flags 0x%x\n", info->flags & ~XT_SOCKET_FLAGS_V2);
		return -EINVAL;
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
eric dumazet
eric dumazet
57
100.00%
1
100.00%
Total
57
100.00%
1
100.00%



static int socket_mt_v3_check(const struct xt_mtchk_param *par)
{
	const struct xt_socket_mtinfo3 *info =
				    (struct xt_socket_mtinfo3 *)par->matchinfo;

	if (info->flags & ~XT_SOCKET_FLAGS_V3) {
		pr_info("unknown flags 0x%x\n",
			info->flags & ~XT_SOCKET_FLAGS_V3);
		return -EINVAL;
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
harout hedeshian
harout hedeshian
57
100.00%
1
100.00%
Total
57
100.00%
1
100.00%


static struct xt_match socket_mt_reg[] __read_mostly = {
	{
		.name		= "socket",
		.revision	= 0,
		.family		= NFPROTO_IPV4,
		.match		= socket_mt4_v0,
		.hooks		= (1 << NF_INET_PRE_ROUTING) |
				  (1 << NF_INET_LOCAL_IN),
		.me		= THIS_MODULE,
        },
	{
		.name		= "socket",
		.revision	= 1,
		.family		= NFPROTO_IPV4,
		.match		= socket_mt4_v1_v2_v3,
		.checkentry	= socket_mt_v1_check,
		.matchsize	= sizeof(struct xt_socket_mtinfo1),
		.hooks		= (1 << NF_INET_PRE_ROUTING) |
				  (1 << NF_INET_LOCAL_IN),
		.me		= THIS_MODULE,
        },
#ifdef XT_SOCKET_HAVE_IPV6
	{
		.name		= "socket",
		.revision	= 1,
		.family		= NFPROTO_IPV6,
		.match		= socket_mt6_v1_v2_v3,
		.checkentry	= socket_mt_v1_check,
		.matchsize	= sizeof(struct xt_socket_mtinfo1),
		.hooks		= (1 << NF_INET_PRE_ROUTING) |
				  (1 << NF_INET_LOCAL_IN),
		.me		= THIS_MODULE,
        },
#endif
	{
		.name		= "socket",
		.revision	= 2,
		.family		= NFPROTO_IPV4,
		.match		= socket_mt4_v1_v2_v3,
		.checkentry	= socket_mt_v2_check,
		.matchsize	= sizeof(struct xt_socket_mtinfo1),
		.hooks		= (1 << NF_INET_PRE_ROUTING) |
				  (1 << NF_INET_LOCAL_IN),
		.me		= THIS_MODULE,
        },
#ifdef XT_SOCKET_HAVE_IPV6
	{
		.name		= "socket",
		.revision	= 2,
		.family		= NFPROTO_IPV6,
		.match		= socket_mt6_v1_v2_v3,
		.checkentry	= socket_mt_v2_check,
		.matchsize	= sizeof(struct xt_socket_mtinfo1),
		.hooks		= (1 << NF_INET_PRE_ROUTING) |
				  (1 << NF_INET_LOCAL_IN),
		.me		= THIS_MODULE,
        },
#endif
	{
		.name		= "socket",
		.revision	= 3,
		.family		= NFPROTO_IPV4,
		.match		= socket_mt4_v1_v2_v3,
		.checkentry	= socket_mt_v3_check,
		.matchsize	= sizeof(struct xt_socket_mtinfo1),
		.hooks		= (1 << NF_INET_PRE_ROUTING) |
				  (1 << NF_INET_LOCAL_IN),
		.me		= THIS_MODULE,
        },
#ifdef XT_SOCKET_HAVE_IPV6
	{
		.name		= "socket",
		.revision	= 3,
		.family		= NFPROTO_IPV6,
		.match		= socket_mt6_v1_v2_v3,
		.checkentry	= socket_mt_v3_check,
		.matchsize	= sizeof(struct xt_socket_mtinfo1),
		.hooks		= (1 << NF_INET_PRE_ROUTING) |
				  (1 << NF_INET_LOCAL_IN),
		.me		= THIS_MODULE,
        },
#endif
};



static int __init socket_mt_init(void)
{
	nf_defrag_ipv4_enable();
#ifdef XT_SOCKET_HAVE_IPV6
	nf_defrag_ipv6_enable();
#endif

	return xt_register_matches(socket_mt_reg, ARRAY_SIZE(socket_mt_reg));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
balazs scheidler
balazs scheidler
28
90.32%
1
50.00%
kovacs krisztian
kovacs krisztian
3
9.68%
1
50.00%
Total
31
100.00%
2
100.00%



static void __exit socket_mt_exit(void)
{
	xt_unregister_matches(socket_mt_reg, ARRAY_SIZE(socket_mt_reg));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
balazs scheidler
balazs scheidler
19
100.00%
1
100.00%
Total
19
100.00%
1
100.00%


module_init(socket_mt_init);

module_exit(socket_mt_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Krisztian Kovacs, Balazs Scheidler");
MODULE_DESCRIPTION("x_tables socket match module");
MODULE_ALIAS("ipt_socket");
MODULE_ALIAS("ip6t_socket");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
balazs scheidler
balazs scheidler
688
26.08%
2
6.90%
kovacs krisztian
kovacs krisztian
685
25.97%
2
6.90%
eric dumazet
eric dumazet
380
14.40%
11
37.93%
harout hedeshian
harout hedeshian
246
9.33%
1
3.45%
florian westphal
florian westphal
195
7.39%
1
3.45%
daniel borkmann
daniel borkmann
155
5.88%
1
3.45%
craig gallek
craig gallek
135
5.12%
1
3.45%
laszlo attila toth
laszlo attila toth
88
3.34%
1
3.45%
pablo neira ayuso
pablo neira ayuso
21
0.80%
1
3.45%
eric w. biederman
eric w. biederman
20
0.76%
1
3.45%
jan engelhardt
jan engelhardt
11
0.42%
3
10.34%
jesse gross
jesse gross
6
0.23%
1
3.45%
hans schillstrom
hans schillstrom
4
0.15%
1
3.45%
igor maravic
igor maravic
2
0.08%
1
3.45%
david s. miller
david s. miller
2
0.08%
1
3.45%
Total
2638
100.00%
29
100.00%
  
Directory: net/netfilter

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.