iptables.h File Reference

File containing the definition of the IP tables utilities. More...

#include <stdbool.h>
#include <inttypes.h>
#include <utarray.h>
#include "allocs.h"
#include "os.h"

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Data Structures
struct	iptables_context
	iptables context structure definition More...

Functions
struct iptables_context *	iptables_init (const char *path, UT_array *ifinfo_array, bool exec_iptables)
	Initialises the iptables rules list. More...
void	iptables_free (struct iptables_context *ctx)
	Free the iptables context. More...
int	iptables_add_bridge (struct iptables_context *ctx, char *sip, char *sif, char *dip, char *dif)
	Add a bridge rule to the list of rules. More...
int	iptables_delete_bridge (struct iptables_context *ctx, const char *sip, const char *sif, const char *dip, const char *dif)
	Delete a bridge rule. More...
int	iptables_add_nat (struct iptables_context *ctx, char *sip, char *sif, char *nif)
	Add a NAT rule. More...
int	iptables_delete_nat (struct iptables_context *ctx, char *sip, char *sif, char *nif)
	Delete a NAT rule. More...

Detailed Description

File containing the definition of the IP tables utilities.

Author

Alexandru Mereacre

Date

2020

Copyright

SPDX-FileCopyrightText: © 2020 NQMCyber Ltd and edgesec contributors SPDX-License-Identifier: LGPL-3.0-or-later

Function Documentation

iptables_add_bridge()

int iptables_add_bridge	(	struct iptables_context *	ctx,
		char *	sip,
		char *	sif,
		char *	dip,
		char *	dif
	)

Add a bridge rule to the list of rules.

Parameters

ctx	The iptables context
sip	Source IP string
sif	Source interface name string
dip	Destination IP string
dif	Destination interface name string

Returns

0 on sucess, -1 on error

iptables_add_nat()

int iptables_add_nat	(	struct iptables_context *	ctx,
		char *	sip,
		char *	sif,
		char *	nif
	)

Add a NAT rule.

Parameters

ctx	The iptables context
sip	Source IP string
sif	Source interface name string
nif	NAT interface name string

Returns

0 on success, -1 on error

iptables_delete_bridge()

int iptables_delete_bridge	(	struct iptables_context *	ctx,
		const char *	sip,
		const char *	sif,
		const char *	dip,
		const char *	dif
	)

Delete a bridge rule.

Parameters

ctx	The iptables context
sip	Source IP string
sif	Source interface name string
dip	Destination IP string
dif	Destination interface name string

Returns

0 on success, -1 on error

iptables_delete_nat()

int iptables_delete_nat	(	struct iptables_context *	ctx,
		char *	sip,
		char *	sif,
		char *	nif
	)

Delete a NAT rule.

Parameters

ctx	The iptables context
sip	Source IP string
sif	Source interface name string
nif	NAT interface name string

Returns

0 on success, -1 on error

iptables_free()

void iptables_free

(

struct iptables_context *

ctx

)

Free the iptables context.

Parameters

ctx	The iptables context

iptables_init()

struct iptables_context* iptables_init	(	const char *	path,
		UT_array *	ifinfo_array,
		bool	exec_iptables
	)

Initialises the iptables rules list.

Parameters

path	The iptables binary path
ifinfo_array	Array of interface configuration info structure
exec_iptables	Execute the iptables command

Returns

struct iptables_context*, pointer to newly created iptables context, NULL on failure