/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright 2005, Gleb Smirnoff <glebius@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#define NG_NAT_NODE_TYPE "nat"
#define NGM_NAT_COOKIE 1107718711
#define NG_NAT_HOOK_IN "in"
#define NG_NAT_HOOK_OUT "out"
/* Arguments for NGM_NAT_SET_MODE message */
struct ng_nat_mode {
uint32_t flags;
uint32_t mask;
};
/* Keep this in sync with the above structure definition */
#define NG_NAT_MODE_INFO { \
{ "flags", &ng_parse_uint32_type }, \
{ "mask", &ng_parse_uint32_type }, \
{ NULL } \
}
#define NG_NAT_LOG 0x01
#define NG_NAT_DENY_INCOMING 0x02
#define NG_NAT_SAME_PORTS 0x04
#define NG_NAT_UNREGISTERED_ONLY 0x10
#define NG_NAT_RESET_ON_ADDR_CHANGE 0x20
#define NG_NAT_PROXY_ONLY 0x40
#define NG_NAT_REVERSE 0x80
#define NG_NAT_UNREGISTERED_CGN 0x100
#define NG_NAT_DESC_LENGTH 64
#define NG_NAT_REDIRPROTO_ADDR (IPPROTO_MAX + 3) /* LibAlias' LINK_ADDR, also unused in in.h */
/* Arguments for NGM_NAT_REDIRECT_PORT message */
struct ng_nat_redirect_port {
struct in_addr local_addr;
struct in_addr alias_addr;
struct in_addr remote_addr;
uint16_t local_port;
uint16_t alias_port;
uint16_t remote_port;
uint8_t proto;
char description[NG_NAT_DESC_LENGTH];
};
/* Keep this in sync with the above structure definition */
#define NG_NAT_REDIRECT_PORT_TYPE_INFO(desctype) { \
{ "local_addr", &ng_parse_ipaddr_type }, \
{ "alias_addr", &ng_parse_ipaddr_type }, \
{ "remote_addr", &ng_parse_ipaddr_type }, \
{ "local_port", &ng_parse_uint16_type }, \
{ "alias_port", &ng_parse_uint16_type }, \
{ "remote_port", &ng_parse_uint16_type }, \
{ "proto", &ng_parse_uint8_type }, \
{ "description", (desctype) }, \
{ NULL } \
}
/* Arguments for NGM_NAT_REDIRECT_ADDR message */
struct ng_nat_redirect_addr {
struct in_addr local_addr;
struct in_addr alias_addr;
char description[NG_NAT_DESC_LENGTH];
};
/* Keep this in sync with the above structure definition */
#define NG_NAT_REDIRECT_ADDR_TYPE_INFO(desctype) { \
{ "local_addr", &ng_parse_ipaddr_type }, \
{ "alias_addr", &ng_parse_ipaddr_type }, \
{ "description", (desctype) }, \
{ NULL } \
}
/* Arguments for NGM_NAT_REDIRECT_PROTO message */
struct ng_nat_redirect_proto {
struct in_addr local_addr;
struct in_addr alias_addr;
struct in_addr remote_addr;
uint8_t proto;
char description[NG_NAT_DESC_LENGTH];
};
/* Keep this in sync with the above structure definition */
#define NG_NAT_REDIRECT_PROTO_TYPE_INFO(desctype) { \
{ "local_addr", &ng_parse_ipaddr_type }, \
{ "alias_addr", &ng_parse_ipaddr_type }, \
{ "remote_addr", &ng_parse_ipaddr_type }, \
{ "proto", &ng_parse_uint8_type }, \
{ "description", (desctype) }, \
{ NULL } \
}
/* Arguments for NGM_NAT_ADD_SERVER message */
struct ng_nat_add_server {
uint32_t id;
struct in_addr addr;
uint16_t port;
};
/* Keep this in sync with the above structure definition */
#define NG_NAT_ADD_SERVER_TYPE_INFO { \
{ "id", &ng_parse_uint32_type }, \
{ "addr", &ng_parse_ipaddr_type }, \
{ "port", &ng_parse_uint16_type }, \
{ NULL } \
}
/* List entry of array returned in NGM_NAT_LIST_REDIRECTS message */
struct ng_nat_listrdrs_entry {
uint32_t id; /* Anything except zero */
struct in_addr local_addr;
struct in_addr alias_addr;
struct in_addr remote_addr;
uint16_t local_port;
uint16_t alias_port;
uint16_t remote_port;
uint16_t proto; /* Valid proto or NG_NAT_REDIRPROTO_ADDR */
uint16_t lsnat; /* LSNAT servers count */
char description[NG_NAT_DESC_LENGTH];
};
/* Keep this in sync with the above structure definition */
#define NG_NAT_LISTRDRS_ENTRY_TYPE_INFO(desctype) { \
{ "id", &ng_parse_uint32_type }, \
{ "local_addr", &ng_parse_ipaddr_type }, \
{ "alias_addr", &ng_parse_ipaddr_type }, \
{ "remote_addr", &ng_parse_ipaddr_type }, \
{ "local_port", &ng_parse_uint16_type }, \
{ "alias_port", &ng_parse_uint16_type }, \
{ "remote_port", &ng_parse_uint16_type }, \
{ "proto", &ng_parse_uint16_type }, \
{ "lsnat", &ng_parse_uint16_type }, \
{ "description", (desctype) }, \
{ NULL } \
}
/* Structure returned by NGM_NAT_LIST_REDIRECTS */
struct ng_nat_list_redirects {
uint32_t total_count;
struct ng_nat_listrdrs_entry redirects[];
};
/* Keep this in sync with the above structure definition */
#define NG_NAT_LIST_REDIRECTS_TYPE_INFO(redirtype) { \
{ "total_count", &ng_parse_uint32_type }, \
{ "redirects", (redirtype) }, \
{ NULL } \
}
/* Structure returned by NGM_NAT_LIBALIAS_INFO */
struct ng_nat_libalias_info {
uint32_t icmpLinkCount;
uint32_t udpLinkCount;
uint32_t tcpLinkCount;
uint32_t sctpLinkCount;
uint32_t pptpLinkCount;
uint32_t protoLinkCount;
uint32_t fragmentIdLinkCount;
uint32_t fragmentPtrLinkCount;
uint32_t sockCount;
};
/* Keep this in sync with the above structure definition */
#define NG_NAT_LIBALIAS_INFO { \
{ "icmpLinkCount", &ng_parse_uint32_type }, \
{ "udpLinkCount", &ng_parse_uint32_type }, \
{ "tcpLinkCount", &ng_parse_uint32_type }, \
{ "sctpLinkCount", &ng_parse_uint32_type }, \
{ "pptpLinkCount", &ng_parse_uint32_type }, \
{ "protoLinkCount", &ng_parse_uint32_type }, \
{ "fragmentIdLinkCount", &ng_parse_uint32_type }, \
{ "fragmentPtrLinkCount", &ng_parse_uint32_type }, \
{ "sockCount", &ng_parse_uint32_type }, \
{ NULL } \
}
enum {
NGM_NAT_SET_IPADDR = 1,
NGM_NAT_SET_MODE,
NGM_NAT_SET_TARGET,
NGM_NAT_REDIRECT_PORT,
NGM_NAT_REDIRECT_ADDR,
NGM_NAT_REDIRECT_PROTO,
NGM_NAT_REDIRECT_DYNAMIC,
NGM_NAT_REDIRECT_DELETE,
NGM_NAT_ADD_SERVER,
NGM_NAT_LIST_REDIRECTS,
NGM_NAT_PROXY_RULE,
NGM_NAT_LIBALIAS_INFO,
NGM_NAT_SET_DLT,
NGM_NAT_GET_DLT,
};
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