8ae06462eb
Add supports for filter table, usage is same as Linux's iptables, including: - [!] -p/--protocol - [!] -s/--source -d/--destination - [!] -i/--in-interface -o/--out-interface - [!] --sport/--source-port --dport/--destination-port - [!] --icmp-type Examples: > iptables -P FORWARD DROP > iptables -I INPUT -i eth0 ! -p icmp -j DROP > iptables -t filter -A FORWARD -p tcp -s 10.0.1.2/24 -d 10.0.3.4/24 -i eth0 -o eth1 --sport 3000:3200 --dport 123:65535 -j ACCEPT > iptables -t filter -I FORWARD 2 -p icmp ! -s 123.123.123.123 ! -i eth0 -o eth1 ! --icmp-type 255 -j REJECT > iptables -L Chain INPUT (policy ACCEPT) target prot idev odev source destination DROP !icmp eth0 any anywhere anywhere Chain FORWARD (policy DROP) target prot idev odev source destination ACCEPT tcp eth0 eth1 10.0.1.2/24 10.0.3.4/24 tcp spts:3000:3200 dpts:123:65535 REJECT icmp !eth0 eth1 !123.123.123.123/32 anywhere icmp !type 255 Chain OUTPUT (policy ACCEPT) target prot idev odev source destination Note: - We're dropping dependency of argtable3, since it is difficult to support command like '! -p tcp ! -i eth0' Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
205 lines
6.1 KiB
C
205 lines
6.1 KiB
C
/****************************************************************************
|
|
* apps/system/iptables/iptables.h
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __APPS_SYSTEM_IPTABLES_IPTABLES_H
|
|
#define __APPS_SYSTEM_IPTABLES_IPTABLES_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <nuttx/compiler.h>
|
|
#include <nuttx/net/netfilter/netfilter.h>
|
|
#include <nuttx/net/netfilter/nf_nat.h>
|
|
#include <nuttx/net/netfilter/x_tables.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#define INV_FLAG_STR(flag) ((flag) ? "!" : "")
|
|
|
|
/****************************************************************************
|
|
* Public Type Definitions
|
|
****************************************************************************/
|
|
|
|
enum iptables_command_e
|
|
{
|
|
COMMAND_INVALID = 0,
|
|
COMMAND_APPEND,
|
|
COMMAND_INSERT,
|
|
COMMAND_DELETE,
|
|
COMMAND_FLUSH,
|
|
COMMAND_LIST,
|
|
COMMAND_POLICY
|
|
};
|
|
|
|
struct iptables_args_s
|
|
{
|
|
enum iptables_command_e cmd;
|
|
enum nf_inet_hooks hook;
|
|
|
|
FAR const char *table;
|
|
|
|
FAR const char *inifname;
|
|
FAR const char *outifname;
|
|
FAR const char *target;
|
|
|
|
FAR const char *saddr;
|
|
FAR const char *daddr;
|
|
FAR const char *sport;
|
|
FAR const char *dport;
|
|
FAR const char *icmp_type;
|
|
|
|
int8_t verdict;
|
|
int8_t rulenum;
|
|
uint8_t protocol;
|
|
|
|
/* invert flags */
|
|
|
|
uint8_t ipinv;
|
|
uint8_t tcpudpinv;
|
|
uint8_t icmpinv;
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_parse
|
|
*
|
|
* Description:
|
|
* Parse args from arg list
|
|
*
|
|
* Returned Value:
|
|
* 0 on success, or a negative error code on failure
|
|
*
|
|
****************************************************************************/
|
|
|
|
int iptables_parse(FAR struct iptables_args_s *args,
|
|
int argc, FAR char *argv[]);
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_parse_ip
|
|
*
|
|
* Description:
|
|
* Parse ip string into address and mask
|
|
*
|
|
* Returned Value:
|
|
* 0 on success, or a negative error code on failure
|
|
*
|
|
****************************************************************************/
|
|
|
|
int iptables_parse_ip(FAR const char *str, FAR void *addr, FAR void *mask,
|
|
uint8_t family);
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_parse_ports
|
|
*
|
|
* Description:
|
|
* Parse port string into min/max port, NULL for ALL
|
|
*
|
|
* Returned Value:
|
|
* 0 on success, or a negative error code on failure
|
|
*
|
|
****************************************************************************/
|
|
|
|
int iptables_parse_ports(FAR const char *str, uint16_t ports[2]);
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_parse_icmp
|
|
*
|
|
* Description:
|
|
* Parse icmp type string into type number
|
|
*
|
|
* Returned Value:
|
|
* Type code on success, or a negative error code on failure
|
|
*
|
|
****************************************************************************/
|
|
|
|
int iptables_parse_icmp(FAR const char *str);
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_showusage
|
|
*
|
|
* Description:
|
|
* Show usage of the iptables program
|
|
*
|
|
****************************************************************************/
|
|
|
|
void iptables_showusage(FAR const char *progname);
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_hook2str
|
|
*
|
|
* Description:
|
|
* Get hook name from hook number
|
|
*
|
|
****************************************************************************/
|
|
|
|
FAR const char *iptables_hook2str(enum nf_inet_hooks hook);
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_target2str
|
|
*
|
|
* Description:
|
|
* Get target name from target structure
|
|
*
|
|
****************************************************************************/
|
|
|
|
FAR const char *iptables_target2str(FAR const struct xt_entry_target *tgt);
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_proto2str
|
|
*
|
|
* Description:
|
|
* Get protocol name from protocol number
|
|
*
|
|
****************************************************************************/
|
|
|
|
FAR const char *iptables_proto2str(uint8_t proto);
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_iface2str
|
|
*
|
|
* Description:
|
|
* Get interface name from interface string
|
|
*
|
|
****************************************************************************/
|
|
|
|
#define iptables_iface2str(iface) ((iface)[0] != '\0' ? (iface) : "any")
|
|
|
|
/****************************************************************************
|
|
* Name: iptables_match2str
|
|
*
|
|
* Description:
|
|
* Get match details from match structure
|
|
*
|
|
****************************************************************************/
|
|
|
|
FAR const char *iptables_match2str(FAR const struct xt_entry_match *match);
|
|
|
|
#endif /* __APPS_SYSTEM_IPTABLES_IPTABLES_H */
|