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