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/*
* firewall3 - 3rd OpenWrt UCI firewall implementation
*
* Copyright (C) 2013 Jo-Philipp Wich <jo@mein.io>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __FW3_UTILS_H
#define __FW3_UTILS_H
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
#include <signal.h>
#include <fcntl.h>
#include <limits.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/file.h>
#include <sys/types.h>
#include <ifaddrs.h>
#include <netdb.h>
#include <libubox/list.h>
#include <libubox/blob.h>
#include <uci.h>
#define FW3_STATEFILE "/var/run/fw3.state"
#define FW3_LOCKFILE "/var/run/fw3.lock"
#define FW3_HELPERCONF "/usr/share/fw3/helpers.conf"
#define FW3_HOTPLUG "/sbin/hotplug-call"
extern bool fw3_pr_debug;
struct fw3_address;
void warn_elem(struct uci_element *e, const char *format, ...)
__attribute__ ((format (printf, 2, 3)));
void warn(const char *format, ...)
__attribute__ ((format (printf, 1, 2)));
void error(const char *format, ...)
__attribute__ ((format (printf, 1, 2)));
void info(const char *format, ...)
__attribute__ ((format (printf, 1, 2)));
#define warn_section(t, r, e, fmt, ...) \
do { \
if (e) \
warn_elem(e, fmt, ##__VA_ARGS__); \
else \
warn("Warning: ubus " t " (%s) " fmt, \
(r && r->name) ? r->name : "?", ##__VA_ARGS__); \
} while(0)
#define fw3_setbit(field, flag) field |= (1 << (flag))
#define fw3_delbit(field, flag) field &= ~(1 << (flag))
#define fw3_hasbit(field, flag) (field & (1 << (flag)))
#define set(field, family, flag) fw3_setbit(field[family == FW3_FAMILY_V6], flag)
#define del(field, family, flag) fw3_delbit(field[family == FW3_FAMILY_V6], flag)
#define has(field, family, flag) fw3_hasbit(field[family == FW3_FAMILY_V6], flag)
#define fw3_foreach(p, h) \
for (p = list_empty(h) ? NULL : list_first_entry(h, typeof(*p), list); \
list_empty(h) ? (p == NULL) : (&p->list != (h)); \
p = list_empty(h) ? list_first_entry(h, typeof(*p), list) \
: list_entry(p->list.next, typeof(*p), list))
#define fw3_is_family(p, f) \
(!p || (p)->family == FW3_FAMILY_ANY || (p)->family == f)
#define fw3_no_family(flags) \
(!(flags & ((1 << FW3_FAMILY_V4) | (1 << FW3_FAMILY_V6))))
#define fw3_no_table(flags) \
(!(flags & ((1<<FW3_TABLE_FILTER)|(1<<FW3_TABLE_NAT)| \
(1<<FW3_TABLE_MANGLE)|(1<<FW3_TABLE_RAW))))
void * fw3_alloc(size_t size);
char * fw3_strdup(const char *s);
const char * fw3_find_command(const char *cmd);
bool fw3_stdout_pipe(void);
bool __fw3_command_pipe(bool silent, const char *command, ...);
#define fw3_command_pipe(...) __fw3_command_pipe(__VA_ARGS__, NULL)
void fw3_command_close(void);
void fw3_pr(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
bool fw3_has_target(const bool ipv6, const char *target);
bool fw3_lock(void);
void fw3_unlock(void);
bool fw3_lock_path(int *fw3_lock_fd, const char *path);
void fw3_unlock_path(int *fw3_lock_fd, const char *path);
void fw3_write_statefile(void *state);
void fw3_free_object(void *obj, const void *opts);
void fw3_free_list(struct list_head *head);
bool fw3_hotplug(bool add, void *zone, void *device);
int fw3_netmask2bitlen(int family, void *mask);
bool fw3_bitlen2netmask(int family, int bits, void *mask);
void fw3_flush_conntrack(void *zone);
bool fw3_attr_parse_name_type(struct blob_attr *entry, const char **name, const char **type);
const char * fw3_protoname(void *proto);
bool fw3_check_loopback_dev(const char *name);
bool fw3_check_loopback_addr(struct fw3_address *addr);
#endif
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