#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "include/ebtables_u.h"
#include "include/ethernetdb.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <errno.h>

Include dependency graph for libebtc.c:

Data Structures
struct	ebt_u_stack

Macros
#define	LOCKDIR "/var/lib/ebtables"

#define	LOCKFILE LOCKDIR"/lock"

#define	OPT_COUNT 0x1000 /* This value is also defined in ebtables.c */

Functions
struct ebt_u_target *	ebt_find_target (const char *name)

struct ebt_u_match *	ebt_find_match (const char *name)

struct ebt_u_watcher *	ebt_find_watcher (const char *name)

struct ebt_u_table *	ebt_find_table (const char *name)

void	ebt_list_extensions ()

void	unlock_file ()

void	__attribute__ ((destructor))

int	ebt_get_kernel_table (struct ebt_u_replace *replace, int init)

void	ebt_initialize_entry (struct ebt_u_entry *e)

void	ebt_cleanup_replace (struct ebt_u_replace *replace)

void	ebt_reinit_extensions ()

void	ebt_free_u_entry (struct ebt_u_entry *e)

int	ebtables_insmod (const char *modname)

struct ebt_u_entries *	ebt_name_to_chain (const struct ebt_u_replace replace, const char arg)

int	ebt_get_chainnr (const struct ebt_u_replace replace, const char arg)

void	ebt_change_policy (struct ebt_u_replace *replace, int policy)

void	ebt_delete_cc (struct ebt_cntchanges *cc)

void	ebt_empty_chain (struct ebt_u_entries *entries)

void	ebt_flush_chains (struct ebt_u_replace *replace)

int	ebt_check_rule_exists (struct ebt_u_replace replace, struct ebt_u_entry new_entry)

void	ebt_add_rule (struct ebt_u_replace replace, struct ebt_u_entry new_entry, int rule_nr)

void	ebt_delete_rule (struct ebt_u_replace replace, struct ebt_u_entry new_entry, int begin, int end)

void	ebt_change_counters (struct ebt_u_replace replace, struct ebt_u_entry new_entry, int begin, int end, struct ebt_counter *cnt, int mask)

void	ebt_zero_counters (struct ebt_u_replace *replace)

void	ebt_new_chain (struct ebt_u_replace replace, const char name, int policy)

void	ebt_delete_chain (struct ebt_u_replace *replace)

void	ebt_rename_chain (struct ebt_u_replace replace, const char name)

void	ebt_double_chains (struct ebt_u_replace *replace)

void	ebt_do_final_checks (struct ebt_u_replace replace, struct ebt_u_entry e, struct ebt_u_entries *entries)

int	ebt_check_for_references (struct ebt_u_replace *replace, int print_err)

int	ebt_check_for_references2 (struct ebt_u_replace *replace, int chain_nr, int print_err)

void	ebt_check_for_loops (struct ebt_u_replace *replace)

void	ebt_add_match (struct ebt_u_entry new_entry, struct ebt_u_match m)

void	ebt_add_watcher (struct ebt_u_entry new_entry, struct ebt_u_watcher w)

void	ebt_register_match (struct ebt_u_match *m)

void	ebt_register_watcher (struct ebt_u_watcher *w)

void	ebt_register_target (struct ebt_u_target *t)

void	ebt_register_table (struct ebt_u_table *t)

void	ebt_iterate_matches (void(f)(struct ebt_u_match ))

void	ebt_iterate_watchers (void(f)(struct ebt_u_watcher ))

void	ebt_iterate_targets (void(f)(struct ebt_u_target ))

void	__ebt_print_bug (char file, int line, char format,...)

void	__ebt_print_error (char *format,...)

Variables
const char *	ebt_hooknames [NF_BR_NUMHOOKS]

const char *	ebt_standard_targets [NUM_STANDARD_TARGETS]

struct ebt_u_table *	ebt_tables

struct ebt_u_match *	ebt_matches

struct ebt_u_watcher *	ebt_watchers

struct ebt_u_target *	ebt_targets

int	use_lockfd

char *	ebt_modprobe

char	ebt_errormsg [ERRORMSG_MAXLEN]

int	ebt_silent

Macro Definition Documentation

#define LOCKDIR "/var/lib/ebtables"

#define LOCKFILE LOCKDIR"/lock"

Referenced by ebt_get_kernel_table(), and unlock_file().

#define OPT_COUNT 0x1000 /* This value is also defined in ebtables.c */

Referenced by ebt_check_rule_exists().

Function Documentation

void __attribute__ ( (destructor) )

References unlock_file(), and use_lockfd.

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void __ebt_print_bug	(	char *	file,
		int	line,
		char *	format,
			...
	)

References PROGNAME.

void __ebt_print_error	(	char *	format,
			...
	)

References ERRORMSG_MAXLEN.

void ebt_add_match	(	struct ebt_u_entry *	new_entry,
		struct ebt_u_match *	m
	)

References ebt_print_memory, ebt_u_entry::m_list, ebt_u_match_list::next, and NULL.

Referenced by do_command().

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void ebt_add_rule	(	struct ebt_u_replace *	replace,
		struct ebt_u_entry *	new_entry,
		int	rule_nr
	)

void ebt_add_watcher	(	struct ebt_u_entry *	new_entry,
		struct ebt_u_watcher *	w
	)

References ebt_print_memory, ebt_u_watcher_list::next, NULL, and ebt_u_entry::w_list.

Referenced by do_command().

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void ebt_change_counters	(	struct ebt_u_replace *	replace,
		struct ebt_u_entry *	new_entry,
		int	begin,
		int	end,
		struct ebt_counter *	cnt,
		int	mask
	)

References ebt_counter::bcnt, ebt_u_entry::cc, ebt_cntchanges::change, ebt_u_entry::cnt, CNT_ADD, CNT_CHANGE, CNT_NORM, ebt_u_entry::cnt_surplus, ebt_print_bug, ebt_to_chain, ebt_u_entries::entries, mask, ebt_u_entry::next, ebt_counter::pcnt, and ebt_cntchanges::type.

Referenced by do_command().

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void ebt_change_policy	(	struct ebt_u_replace *	replace,
		int	policy
	)

References EBT_CONTINUE, ebt_print_bug, ebt_to_chain, entries, NUM_STANDARD_TARGETS, and ebt_u_entries::policy.

Referenced by do_command().

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void ebt_check_for_loops ( struct ebt_u_replace * replace )

References ebt_u_stack::chain_nr, ebt_u_replace::chains, ebt_u_stack::e, ebt_print_error, ebt_print_memory, EBT_STANDARD_TARGET, ebt_u_entries::entries, entries, ebt_u_stack::entries, ebt_u_entries::hook_mask, ebt_u_stack::n, ebt_u_entries::name, ebt_entry_target::name, ebt_u_entries::nentries, ebt_u_entry::next, NF_BR_NUMHOOKS, NULL, ebt_u_replace::num_chains, ebt_u_entry::t, ebt_entry_target::u, and verdict.

Referenced by do_command().

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int ebt_check_for_references	(	struct ebt_u_replace *	replace,
		int	print_err
	)

int ebt_check_for_references2	(	struct ebt_u_replace *	replace,
		int	chain_nr,
		int	print_err
	)

References ebt_u_replace::selected_chain.

int ebt_check_rule_exists	(	struct ebt_u_replace *	replace,
		struct ebt_u_entry *	new_entry
	)

void ebt_cleanup_replace ( struct ebt_u_replace * replace )

References ebt_u_replace::cc, ebt_u_replace::chains, ebt_u_replace::command, ebt_u_replace::counters, ebt_free_u_entry(), ebt_u_entries::entries, entries, ebt_u_replace::filename, ebt_u_replace::flags, ebt_u_replace::name, ebt_u_replace::nentries, ebt_cntchanges::next, ebt_u_entry::next, NULL, ebt_u_replace::num_chains, ebt_u_replace::num_counters, ebt_cntchanges::prev, ebt_u_replace::selected_chain, and ebt_u_replace::valid_hooks.

Referenced by main().

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void ebt_delete_cc ( struct ebt_cntchanges * cc )

References CNT_ADD, CNT_DEL, ebt_cntchanges::next, ebt_cntchanges::prev, and ebt_cntchanges::type.

Referenced by ebt_delete_rule(), and ebt_empty_chain().

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void ebt_delete_chain ( struct ebt_u_replace * replace )

References ebt_print_bug, NF_BR_NUMHOOKS, and ebt_u_replace::selected_chain.

Referenced by do_command().

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void ebt_delete_rule	(	struct ebt_u_replace *	replace,
		struct ebt_u_entry *	new_entry,
		int	begin,
		int	end
	)

References ebt_u_entry::cc, ebt_u_replace::chains, ebt_u_entries::counter_offset, ebt_delete_cc(), ebt_free_u_entry(), ebt_to_chain, ebt_u_entries::entries, ebt_u_entries::nentries, ebt_u_replace::nentries, ebt_u_entry::next, ebt_u_entry::prev, and ebt_u_replace::selected_chain.

Referenced by do_command().

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void ebt_do_final_checks	(	struct ebt_u_replace *	replace,
		struct ebt_u_entry *	e,
		struct ebt_u_entries *	entries
	)

References ebt_errormsg, ebt_find_match(), ebt_find_target(), ebt_find_watcher(), ebt_u_match::final_check, ebt_u_watcher::final_check, ebt_u_target::final_check, ebt_u_entries::hook_mask, ebt_u_match_list::m, ebt_u_match::m, ebt_u_entry::m_list, ebt_u_replace::name, ebt_entry_match::name, ebt_entry_watcher::name, ebt_entry_target::name, ebt_u_match_list::next, ebt_u_watcher_list::next, ebt_u_entry::t, ebt_u_target::t, ebt_entry_match::u, ebt_entry_watcher::u, ebt_entry_target::u, ebt_u_watcher_list::w, ebt_u_watcher::w, and ebt_u_entry::w_list.

Referenced by do_command().

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void ebt_double_chains ( struct ebt_u_replace * replace )

References ebt_u_replace::chains, ebt_print_memory, and ebt_u_replace::max_chains.

Referenced by ebt_new_chain().

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void ebt_empty_chain ( struct ebt_u_entries * entries )

References ebt_u_entry::cc, ebt_delete_cc(), ebt_free_u_entry(), ebt_u_entries::entries, ebt_u_entries::nentries, ebt_u_entry::next, and ebt_u_entry::prev.

Referenced by ebt_flush_chains().

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struct ebt_u_match* ebt_find_match ( const char * name )

References ebt_matches, ebt_u_match::m, ebt_u_match::name, and ebt_u_match::next.

Referenced by do_command(), and ebt_do_final_checks().

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struct ebt_u_table* ebt_find_table ( const char * name )

References ebt_tables, ebt_u_table::name, and ebt_u_table::next.

Referenced by do_command(), and ebt_get_kernel_table().

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struct ebt_u_target* ebt_find_target ( const char * name )

References ebt_targets, ebt_u_target::name, ebt_u_target::next, and ebt_u_target::t.

Referenced by do_command(), ebt_do_final_checks(), and ebt_initialize_entry().

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struct ebt_u_watcher* ebt_find_watcher ( const char * name )

References ebt_watchers, ebt_u_watcher::name, ebt_u_watcher::next, and ebt_u_watcher::w.

Referenced by do_command(), and ebt_do_final_checks().

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void ebt_flush_chains ( struct ebt_u_replace * replace )

References ebt_u_replace::chains, ebt_u_entries::counter_offset, ebt_empty_chain(), ebt_to_chain, entries, ebt_u_entries::nentries, ebt_u_replace::nentries, ebt_u_replace::num_chains, and ebt_u_replace::selected_chain.

Referenced by do_command().

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void ebt_free_u_entry ( struct ebt_u_entry * e )

References ebt_u_match_list::m, ebt_u_entry::m_list, ebt_u_match_list::next, ebt_u_watcher_list::next, ebt_u_entry::t, ebt_u_watcher_list::w, and ebt_u_entry::w_list.

Referenced by ebt_cleanup_replace(), ebt_delete_rule(), and ebt_empty_chain().

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int ebt_get_chainnr	(	const struct ebt_u_replace *	replace,
		const char *	arg
	)

References ebt_u_replace::chains, ebt_u_entries::name, and ebt_u_replace::num_chains.

Referenced by do_command(), and main().

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int ebt_get_kernel_table	(	struct ebt_u_replace *	replace,
		int	init
	)

References ebt_errormsg, ebt_find_table(), ebt_get_table(), ebt_print_error, ebt_print_error2, ebtables_insmod(), LOCKFILE, ebt_u_replace::name, and use_lockfd.

Referenced by do_command(), and main().

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void ebt_initialize_entry ( struct ebt_u_entry * e )

References ebt_counter::bcnt, ebt_u_entry::bitmask, ebt_u_entry::cnt, ebt_u_entry::cnt_surplus, EBT_CONTINUE, ebt_find_target(), EBT_NOPROTO, ebt_print_bug, EBT_STANDARD_TARGET, ebt_u_entry::ethproto, ebt_u_entry::in, ebt_u_entry::invflags, ebt_u_entry::logical_in, ebt_u_entry::logical_out, ebt_u_entry::m_list, NULL, ebt_u_entry::out, ebt_counter::pcnt, ebt_u_entry::t, ebt_u_target::used, and ebt_u_entry::w_list.

Referenced by do_command().

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void ebt_iterate_matches ( void(*)(struct ebt_u_match *) f )

References ebt_u_match::next.

Referenced by ebt_early_init_once().

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void ebt_iterate_targets ( void(*)(struct ebt_u_target *) f )

References ebt_u_target::next.

Referenced by ebt_early_init_once().

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void ebt_iterate_watchers ( void(*)(struct ebt_u_watcher *) f )

References ebt_u_watcher::next.

Referenced by ebt_early_init_once().

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void ebt_list_extensions ( )

References ebt_matches, ebt_tables, ebt_targets, ebt_watchers, ebt_u_match::m, ebt_u_table::name, ebt_u_match::name, ebt_u_watcher::name, ebt_u_target::name, ebt_u_table::next, ebt_u_match::next, ebt_u_watcher::next, ebt_u_target::next, PRINT_VERSION, ebt_u_target::t, and ebt_u_watcher::w.

Referenced by do_command().

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struct ebt_u_entries* ebt_name_to_chain	(	const struct ebt_u_replace *	replace,
		const char *	arg
	)

References ebt_u_replace::chains, ebt_u_entries::name, NULL, and ebt_u_replace::num_chains.

void ebt_new_chain	(	struct ebt_u_replace *	replace,
		const char *	name,
		int	policy
	)

References ebt_u_replace::chains, ebt_double_chains(), ebt_print_memory, ebt_u_replace::max_chains, ebt_u_entries::nentries, ebt_u_replace::nentries, new, NULL, ebt_u_replace::num_chains, and ebt_u_entries::policy.

Referenced by do_command(), and main().

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void ebt_register_match ( struct ebt_u_match * m )

References EBT_ALIGN, ebt_print_memory, ebt_u_match::init, ebt_u_match::m, ebt_entry_match::match_size, ebt_entry_match::name, ebt_u_match::name, ebt_u_match::next, NULL, ebt_u_match::size, size, and ebt_entry_match::u.

Referenced by _init().

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void ebt_register_table ( struct ebt_u_table * t )

References ebt_tables, and ebt_u_table::next.

Referenced by _init().

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void ebt_register_target ( struct ebt_u_target * t )

References EBT_ALIGN, ebt_print_memory, ebt_u_target::init, ebt_entry_target::name, ebt_u_target::name, ebt_u_target::next, NULL, size, ebt_u_target::size, ebt_u_target::t, ebt_entry_target::target_size, and ebt_entry_target::u.

Referenced by _init().

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void ebt_register_watcher ( struct ebt_u_watcher * w )

References EBT_ALIGN, ebt_print_memory, ebt_u_watcher::init, ebt_entry_watcher::name, ebt_u_watcher::name, ebt_u_watcher::next, NULL, ebt_u_watcher::size, size, ebt_entry_watcher::u, ebt_u_watcher::w, and ebt_entry_watcher::watcher_size.

Referenced by _init().

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void ebt_reinit_extensions ( )

void ebt_rename_chain	(	struct ebt_u_replace *	replace,
		const char *	name
	)

References ebt_print_bug, ebt_to_chain, and ebt_u_entries::name.

Referenced by do_command().

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void ebt_zero_counters ( struct ebt_u_replace * replace )

References ebt_counter::bcnt, ebt_u_entry::cc, ebt_u_replace::chains, ebt_cntchanges::change, ebt_u_entry::cnt, CNT_CHANGE, CNT_NORM, ebt_to_chain, ebt_u_entries::entries, ebt_u_entries::nentries, ebt_u_entry::next, ebt_u_replace::num_chains, ebt_counter::pcnt, and ebt_cntchanges::type.

Referenced by do_command().

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int ebtables_insmod ( const char * modname )

References buf, and NULL.

Referenced by ebt_deliver_table(), and ebt_get_kernel_table().

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void unlock_file ( )

References LOCKFILE.

Referenced by __attribute__().

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Variable Documentation

char ebt_errormsg[ERRORMSG_MAXLEN]

Referenced by do_command(), ebt_do_final_checks(), ebt_get_kernel_table(), and main().

const char* ebt_hooknames[NF_BR_NUMHOOKS]

Initial value:

=
{
    [NF_BR_PRE_ROUTING]"PREROUTING",
    [NF_BR_LOCAL_IN]"INPUT",
    [NF_BR_FORWARD]"FORWARD",
    [NF_BR_LOCAL_OUT]"OUTPUT",
    [NF_BR_POST_ROUTING]"POSTROUTING",
    [NF_BR_BROUTING]"BROUTING"
}

struct ebt_u_match* ebt_matches

Referenced by do_command(), ebt_find_match(), and ebt_list_extensions().

char* ebt_modprobe

Referenced by do_command().

int ebt_silent

Referenced by main().

const char* ebt_standard_targets[NUM_STANDARD_TARGETS]

Initial value:

=
{
    "ACCEPT",
    "DROP",
    "CONTINUE",
    "RETURN",
}

Referenced by do_command(), and main().

struct ebt_u_table* ebt_tables

Referenced by ebt_find_table(), ebt_list_extensions(), and ebt_register_table().

struct ebt_u_target* ebt_targets

Referenced by ebt_find_target(), and ebt_list_extensions().

struct ebt_u_watcher* ebt_watchers

Referenced by do_command(), ebt_find_watcher(), and ebt_list_extensions().

int use_lockfd

Referenced by __attribute__(), do_command(), and ebt_get_kernel_table().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation