xtoptions.c File Reference

#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <netdb.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <arpa/inet.h>
#include <netinet/ip.h>
#include "xtables.h"
#include "xshared.h"

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Data Structures
struct	syslog_level
	Simple key-value pairs for syslog levels. More...
struct	tos_value_mask
struct	tos_symbol_info

Macros
#define	IPTOS_NORMALSVC   0
#define	XTOPT_MKPTR(cb)   ((void *)((char *)(cb)->data + (cb)->entry->ptroff))

Functions
struct option *	xtables_options_xfrm (struct option *orig_opts, struct option *oldopts, const struct xt_option_entry *entry, unsigned int *offset)
	Creates getopt options from the x6-style option map, and assigns each a getopt id. More...
: name of extension
: accumulated flags : extension's option table Check that all option constraints have been met. This effectively replaces ->final_check of the older API.
void	xtables_options_fcheck (const char *name, unsigned int xflags, const struct xt_option_entry *table)
void	xtables_option_tfcall (struct xtables_target *t)
	Dispatch arguments to the appropriate final_check function, based upon the extension's choice of API. More...
void	xtables_option_mfcall (struct xtables_match *m)
	Dispatch arguments to the appropriate final_check function, based upon the extension's choice of API. More...
struct xtables_lmap *	xtables_lmap_init (const char *file)
void	xtables_lmap_free (struct xtables_lmap *head)
int	xtables_lmap_name2id (const struct xtables_lmap *head, const char *name)
const char *	xtables_lmap_id2name (const struct xtables_lmap *head, int id)

: port name, or number as a string (e.g. "http" or "80")
Resolve a port name to a number. Returns the port number in integral form on success, or <0 on error. (errno will not be set.)
void	xtables_option_parse (struct xt_option_call *cb)
	The master option parsing routine. More...
void	xtables_option_metavalidate (const char *name, const struct xt_option_entry *entry)
	Verifies that an extension's option map descriptor is valid, and ought to be called right after the extension has been loaded, and before option merging/xfrm. More...
void	xtables_option_tpcall (unsigned int c, char **argv, bool invert, struct xtables_target *t, void *fw)
	: getopt id (i.e. More...
void	xtables_option_mpcall (unsigned int c, char **argv, bool invert, struct xtables_match *m, void *fw)
	: getopt id (i.e. More...

Macro Definition Documentation

#define IPTOS_NORMALSVC   0

#define XTOPT_MKPTR

(

cb

)

((void *)((char *)(cb)->data + (cb)->entry->ptroff))

Function Documentation

void xtables_lmap_free

(

struct xtables_lmap *

head

)

References xtables_lmap::name, xtables_lmap::next, and NULL.

Referenced by xtables_lmap_init().

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const char* xtables_lmap_id2name	(	const struct xtables_lmap *	head,
		int	id
	)

References xtables_lmap::id, xtables_lmap::name, xtables_lmap::next, and NULL.

struct xtables_lmap* xtables_lmap_init

(

const char *

file

)

References buf, id, NULL, and xtables_lmap_free().

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int xtables_lmap_name2id	(	const struct xtables_lmap *	head,
		const char *	name
	)

References xtables_lmap::id, xtables_lmap::name, xtables_lmap::next, and NULL.

void xtables_option_metavalidate	(	const char *	name,
		const struct xt_option_entry *	entry
	)

Verifies that an extension's option map descriptor is valid, and ought to be called right after the extension has been loaded, and before option merging/xfrm.

References ARRAY_SIZE, xtables_globals::exit_err, xt_option_entry::flags, xt_option_entry::id, xt_option_entry::name, NULL, OTHER_PROBLEM, xt_option_entry::ptroff, xt_option_entry::size, xt_option_entry::type, XT_OPTION_OFFSET_SCALE, xt_params, and XTOPT_PUT.

Referenced by xtables_register_match(), and xtables_register_target().

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void xtables_option_mfcall

(

struct xtables_match *

m

)

Dispatch arguments to the appropriate final_check function, based upon the extension's choice of API.

References xt_entry_match::data, xt_fcheck_call::data, xt_fcheck_call::ext_name, xtables_match::final_check, xtables_match::m, xtables_match::mflags, xtables_match::name, NULL, xt_fcheck_call::udata, xtables_match::udata, xtables_match::x6_fcheck, xtables_match::x6_options, xt_fcheck_call::xflags, and xtables_options_fcheck().

Referenced by do_command4(), do_command6(), and do_commandx().

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void xtables_option_mpcall	(	unsigned int	c,
		char **	argv,
		bool	invert,
		struct xtables_match *	m,
		void *	fw
	)

: getopt id (i.e.

with offset) : struct ipt_entry or ip6t_entry

Dispatch arguments to the appropriate parse function, based upon the extension's choice of API.

References xt_option_call::arg, xt_entry_match::data, xt_option_call::data, xt_option_call::entry, xt_option_call::ext_name, xt_option_call::invert, xtables_match::m, xt_option_call::match, xtables_match::mflags, xtables_match::name, NULL, xtables_match::option_offset, OTHER_PROBLEM, xtables_match::parse, xt_option_call::udata, xtables_match::udata, xtables_match::x6_options, xtables_match::x6_parse, xt_option_call::xflags, xt_option_call::xt_entry, and xtables_error.

Referenced by command_default().

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void xtables_option_parse

(

struct xt_option_call *

cb

)

The master option parsing routine.

May be used for the ".x6_parse" function pointer in extensions if fully automatic parsing is desired. It may be also called manually from a custom x6_parse function.

References ARRAY_SIZE, xt_option_call::entry, xt_option_entry::excl, xtables_globals::exit_err, xt_option_call::ext_name, xt_option_entry::flags, xt_option_entry::id, xt_option_call::invert, xt_option_entry::name, NULL, xt_option_call::nvals, PARAMETER_PROBLEM, xt_option_entry::type, xt_option_call::xflags, xt_params, XTOPT_INVERT, XTOPT_MULTI, and XTTYPE_NONE.

void xtables_option_tfcall

(

struct xtables_target *

t

)

Dispatch arguments to the appropriate final_check function, based upon the extension's choice of API.

References xt_entry_target::data, xt_fcheck_call::data, xt_fcheck_call::ext_name, xtables_target::final_check, xtables_target::name, NULL, xtables_target::t, xtables_target::tflags, xt_fcheck_call::udata, xtables_target::udata, xtables_target::x6_fcheck, xtables_target::x6_options, xt_fcheck_call::xflags, and xtables_options_fcheck().

Referenced by do_command4(), do_command6(), do_commandarp(), and do_commandx().

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void xtables_option_tpcall	(	unsigned int	c,
		char **	argv,
		bool	invert,
		struct xtables_target *	t,
		void *	fw
	)

: getopt id (i.e.

with offset) : struct ipt_entry or ip6t_entry

Dispatch arguments to the appropriate parse function, based upon the extension's choice of API.

References xt_option_call::arg, xt_entry_target::data, xt_option_call::data, xt_option_call::entry, xt_option_call::ext_name, xt_option_call::invert, xtables_target::name, NULL, xtables_target::option_offset, OTHER_PROBLEM, xtables_target::parse, xtables_target::t, xt_option_call::target, xtables_target::tflags, xt_option_call::udata, xtables_target::udata, xtables_target::x6_options, xtables_target::x6_parse, xt_option_call::xflags, xt_option_call::xt_entry, and xtables_error.

Referenced by command_default(), and do_commandarp().

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void xtables_options_fcheck	(	const char *	name,
		unsigned int	xflags,
		const struct xt_option_entry *	table
	)

References xtables_globals::exit_err, xt_option_entry::flags, xt_option_entry::id, xt_option_entry::name, NULL, PARAMETER_PROBLEM, xt_params, and XTOPT_MAND.

Referenced by xtables_option_mfcall(), and xtables_option_tfcall().

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struct option* xtables_options_xfrm	(	struct option *	orig_opts,
		struct option *	oldopts,
		const struct xt_option_entry *	entry,
		unsigned int *	offset
	)

Creates getopt options from the x6-style option map, and assigns each a getopt id.

References xt_option_entry::id, xt_option_entry::name, NULL, xtables_globals::option_offset, xt_option_entry::type, XT_OPTION_OFFSET_SCALE, xt_params, xtables_free_opts(), and XTTYPE_NONE.

Referenced by command_default().

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