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/*
* Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file
* @brief NAT syslog logging
*/
#include <vnet/fib/fib_table.h>
#include <vnet/ip/ip.h>
#include <vnet/syslog/syslog.h>
#include <nat/lib/nat_syslog.h>
#include <nat/lib/inlines.h>
#define NAT_FACILITY SYSLOG_FACILITY_LOCAL0
#define NAT_APPNAME "NAT"
#define SADD_SDEL_SEVERITY SYSLOG_SEVERITY_INFORMATIONAL
#define APMADD_APMDEL_SEVERITY SYSLOG_SEVERITY_INFORMATIONAL
#define SADD_MSGID "SADD"
#define SDEL_MSGID "SDEL"
#define APMADD_MSGID "APMADD"
#define APMDEL_MSGID "APMDEL"
#define NSESS_SDID "nsess"
#define NAPMAP_SDID "napmap"
#define SSUBIX_SDPARAM_NAME "SSUBIX"
#define SVLAN_SDPARAM_NAME "SVLAN"
#define IATYP_SDPARAM_NAME "IATYP"
#define ISADDR_SDPARAM_NAME "ISADDR"
#define ISPORT_SDPARAM_NAME "ISPORT"
#define IDADDR_SDPARAM_NAME "IDADDR"
#define IDPORT_SDPARAM_NAME "IDPORT"
#define XATYP_SDPARAM_NAME "XATYP"
#define XSADDR_SDPARAM_NAME "XSADDR"
#define XSPORT_SDPARAM_NAME "XSPORT"
#define XDADDR_SDPARAM_NAME "XDADDR"
#define XDPORT_SDPARAM_NAME "XDPORT"
#define PROTO_SDPARAM_NAME "PROTO"
#define SV6ENC_SDPARAM_NAME "SV6ENC"
#define IATYP_IPV4 "IPv4"
#define IATYP_IPV6 "IPv6"
static inline void
nat_syslog_nat44_apmap (u32 ssubix, u32 sfibix, ip4_address_t * isaddr,
u16 isport, ip4_address_t * xsaddr, u16 xsport,
nat_protocol_t proto, u8 is_add,
ip6_address_t * sv6enc)
{
syslog_msg_t syslog_msg;
fib_table_t *fib;
if (!syslog_is_enabled ())
return;
if (syslog_severity_filter_block (APMADD_APMDEL_SEVERITY))
return;
syslog_msg_init (&syslog_msg, NAT_FACILITY, APMADD_APMDEL_SEVERITY,
NAT_APPNAME, is_add ? APMADD_MSGID : APMDEL_MSGID);
syslog_msg_sd_init (&syslog_msg, NAPMAP_SDID);
syslog_msg_add_sd_param (&syslog_msg, SSUBIX_SDPARAM_NAME, "%d", ssubix);
if (sv6enc)
{
syslog_msg_add_sd_param (&syslog_msg, SV6ENC_SDPARAM_NAME, "%U",
format_ip6_address, sv6enc);
}
else
{
fib = fib_table_get (sfibix, FIB_PROTOCOL_IP4);
syslog_msg_add_sd_param (&syslog_msg, SVLAN_SDPARAM_NAME, "%d",
fib->ft_table_id);
}
syslog_msg_add_sd_param (&syslog_msg, IATYP_SDPARAM_NAME, IATYP_IPV4);
syslog_msg_add_sd_param (&syslog_msg, ISADDR_SDPARAM_NAME, "%U",
format_ip4_address, isaddr);
syslog_msg_add_sd_param (&syslog_msg, ISPORT_SDPARAM_NAME, "%d",
clib_net_to_host_u16 (isport));
syslog_msg_add_sd_param (&syslog_msg, XATYP_SDPARAM_NAME, IATYP_IPV4);
syslog_msg_add_sd_param (&syslog_msg, XSADDR_SDPARAM_NAME, "%U",
format_ip4_address, xsaddr);
syslog_msg_add_sd_param (&syslog_msg, XSPORT_SDPARAM_NAME, "%d",
clib_net_to_host_u16 (xsport));
syslog_msg_add_sd_param (&syslog_msg, PROTO_SDPARAM_NAME, "%d",
nat_proto_to_ip_proto (proto));
syslog_msg_send (&syslog_msg);
}
void
nat_syslog_nat44_apmadd (u32 ssubix, u32 sfibix, ip4_address_t * isaddr,
u16 isport, ip4_address_t * xsaddr, u16 xsport,
nat_protocol_t proto)
{
nat_syslog_nat44_apmap (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
proto, 1, 0);
}
void
nat_syslog_nat44_apmdel (u32 ssubix, u32 sfibix, ip4_address_t * isaddr,
u16 isport, ip4_address_t * xsaddr, u16 xsport,
nat_protocol_t proto)
{
nat_syslog_nat44_apmap (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
proto, 0, 0);
}
void
nat_syslog_dslite_apmadd (u32 ssubix, ip6_address_t * sv6enc,
ip4_address_t * isaddr, u16 isport,
ip4_address_t * xsaddr, u16 xsport,
nat_protocol_t proto)
{
nat_syslog_nat44_apmap (ssubix, 0, isaddr, isport, xsaddr, xsport,
proto, 1, sv6enc);
}
void
nat_syslog_dslite_apmdel (u32 ssubix, ip6_address_t * sv6enc,
ip4_address_t * isaddr, u16 isport,
ip4_address_t * xsaddr, u16 xsport,
nat_protocol_t proto)
{
nat_syslog_nat44_apmap (ssubix, 0, isaddr, isport, xsaddr, xsport,
proto, 0, sv6enc);
}
static inline void
nat_syslog_nat44_sess (u32 ssubix, u32 sfibix, ip4_address_t * isaddr,
u16 isport, ip4_address_t * xsaddr, u16 xsport,
ip4_address_t * idaddr, u16 idport,
ip4_address_t * xdaddr, u16 xdport,
nat_protocol_t proto, u8 is_add, u8 is_twicenat)
{
syslog_msg_t syslog_msg;
fib_table_t *fib;
if (!syslog_is_enabled ())
return;
if (syslog_severity_filter_block (SADD_SDEL_SEVERITY))
return;
fib = fib_table_get (sfibix, FIB_PROTOCOL_IP4);
syslog_msg_init (&syslog_msg, NAT_FACILITY, SADD_SDEL_SEVERITY, NAT_APPNAME,
is_add ? SADD_MSGID : SDEL_MSGID);
syslog_msg_sd_init (&syslog_msg, NSESS_SDID);
syslog_msg_add_sd_param (&syslog_msg, SSUBIX_SDPARAM_NAME, "%d", ssubix);
syslog_msg_add_sd_param (&syslog_msg, SVLAN_SDPARAM_NAME, "%d",
fib->ft_table_id);
syslog_msg_add_sd_param (&syslog_msg, IATYP_SDPARAM_NAME, IATYP_IPV4);
syslog_msg_add_sd_param (&syslog_msg, ISADDR_SDPARAM_NAME, "%U",
format_ip4_address, isaddr);
syslog_msg_add_sd_param (&syslog_msg, ISPORT_SDPARAM_NAME, "%d",
clib_net_to_host_u16 (isport));
syslog_msg_add_sd_param (&syslog_msg, XATYP_SDPARAM_NAME, IATYP_IPV4);
syslog_msg_add_sd_param (&syslog_msg, XSADDR_SDPARAM_NAME, "%U",
format_ip4_address, xsaddr);
syslog_msg_add_sd_param (&syslog_msg, XSPORT_SDPARAM_NAME, "%d",
clib_net_to_host_u16 (xsport));
syslog_msg_add_sd_param (&syslog_msg, PROTO_SDPARAM_NAME, "%d",
nat_proto_to_ip_proto (proto));
syslog_msg_add_sd_param (&syslog_msg, XDADDR_SDPARAM_NAME, "%U",
format_ip4_address, xdaddr);
syslog_msg_add_sd_param (&syslog_msg, XDPORT_SDPARAM_NAME, "%d",
clib_net_to_host_u16 (xdport));
if (is_twicenat)
{
syslog_msg_add_sd_param (&syslog_msg, IDADDR_SDPARAM_NAME, "%U",
format_ip4_address, idaddr);
syslog_msg_add_sd_param (&syslog_msg, IDPORT_SDPARAM_NAME, "%d",
clib_net_to_host_u16 (idport));
}
syslog_msg_send (&syslog_msg);
}
void
nat_syslog_nat44_sadd (u32 ssubix, u32 sfibix, ip4_address_t * isaddr,
u16 isport, ip4_address_t * idaddr, u16 idport,
ip4_address_t * xsaddr, u16 xsport,
ip4_address_t * xdaddr, u16 xdport,
nat_protocol_t proto, u8 is_twicenat)
{
nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
idaddr, idport, xdaddr, xdport, proto, 1,
is_twicenat);
}
void
nat_syslog_nat44_sdel (u32 ssubix, u32 sfibix, ip4_address_t * isaddr,
u16 isport, ip4_address_t * idaddr, u16 idport,
ip4_address_t * xsaddr, u16 xsport,
ip4_address_t * xdaddr, u16 xdport,
nat_protocol_t proto, u8 is_twicenat)
{
nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
idaddr, idport, xdaddr, xdport, proto, 0,
is_twicenat);
}
static inline void
nat_syslog_nat64_sess (u32 sfibix, ip6_address_t * isaddr, u16 isport,
ip4_address_t * xsaddr, u16 xsport,
ip4_address_t * xdaddr, u16 xdport,
nat_protocol_t proto, u8 is_add)
{
syslog_msg_t syslog_msg;
fib_table_t *fib;
if (!syslog_is_enabled ())
return;
if (syslog_severity_filter_block (SADD_SDEL_SEVERITY))
return;
fib = fib_table_get (sfibix, FIB_PROTOCOL_IP6);
syslog_msg_init (&syslog_msg, NAT_FACILITY, SADD_SDEL_SEVERITY, NAT_APPNAME,
is_add ? SADD_MSGID : SDEL_MSGID);
syslog_msg_sd_init (&syslog_msg, NSESS_SDID);
syslog_msg_add_sd_param (&syslog_msg, SVLAN_SDPARAM_NAME, "%d",
fib->ft_table_id);
syslog_msg_add_sd_param (&syslog_msg, IATYP_SDPARAM_NAME, IATYP_IPV6);
syslog_msg_add_sd_param (&syslog_msg, ISADDR_SDPARAM_NAME, "%U",
format_ip6_address, isaddr);
syslog_msg_add_sd_param (&syslog_msg, ISPORT_SDPARAM_NAME, "%d",
clib_net_to_host_u16 (isport));
syslog_msg_add_sd_param (&syslog_msg, XATYP_SDPARAM_NAME, IATYP_IPV4);
syslog_msg_add_sd_param (&syslog_msg, XSADDR_SDPARAM_NAME, "%U",
format_ip4_address, xsaddr);
syslog_msg_add_sd_param (&syslog_msg, XSPORT_SDPARAM_NAME, "%d",
clib_net_to_host_u16 (xsport));
syslog_msg_add_sd_param (&syslog_msg, PROTO_SDPARAM_NAME, "%d", proto);
syslog_msg_add_sd_param (&syslog_msg, XDADDR_SDPARAM_NAME, "%U",
format_ip4_address, xdaddr);
syslog_msg_add_sd_param (&syslog_msg, XDPORT_SDPARAM_NAME, "%d",
clib_net_to_host_u16 (xdport));
syslog_msg_send (&syslog_msg);
}
void
nat_syslog_nat64_sadd (u32 sfibix, ip6_address_t * isaddr, u16 isport,
ip4_address_t * xsaddr, u16 xsport,
ip4_address_t * xdaddr, u16 xdport,
nat_protocol_t proto)
{
nat_syslog_nat64_sess (sfibix, isaddr, isport, xsaddr, xsport, xdaddr,
xdport, proto, 1);
}
void
nat_syslog_nat64_sdel (u32 sfibix, ip6_address_t * isaddr, u16 isport,
ip4_address_t * xsaddr, u16 xsport,
ip4_address_t * xdaddr, u16 xdport,
nat_protocol_t proto)
{
nat_syslog_nat64_sess (sfibix, isaddr, isport, xsaddr, xsport, xdaddr,
xdport, proto, 0);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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