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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_XTABLES_5_H
#define __FW3_XTABLES_5_H
static inline void
fw3_xt_reset(void)
{
xtables_matches = NULL;
xtables_targets = NULL;
}
static inline const char *
fw3_xt_get_match_name(struct xtables_match *m)
{
return m->m->u.user.name;
}
static inline void
fw3_xt_set_match_name(struct xtables_match *m)
{
snprintf(m->m->u.user.name, sizeof(m->m->u.user.name), "%s", m->name);
}
static inline bool
fw3_xt_has_match_parse(struct xtables_match *m)
{
return !!m->parse;
}
static inline void
fw3_xt_free_match_udata(struct xtables_match *m)
{
return;
}
static inline void
fw3_xt_merge_match_options(struct xtables_globals *g, struct xtables_match *m)
{
g->opts = xtables_merge_options(g->opts, m->extra_opts, &m->option_offset);
}
static inline const char *
fw3_xt_get_target_name(struct xtables_target *t)
{
return t->t->u.user.name;
}
static inline void
fw3_xt_set_target_name(struct xtables_target *t, const char *name)
{
snprintf(t->t->u.user.name, sizeof(t->t->u.user.name), "%s", name);
}
static inline bool
fw3_xt_has_target_parse(struct xtables_target *t)
{
return !!t->parse;
}
static inline void
fw3_xt_free_target_udata(struct xtables_target *t)
{
return;
}
static inline void
fw3_xt_merge_target_options(struct xtables_globals *g, struct xtables_target *t)
{
g->opts = xtables_merge_options(g->opts, t->extra_opts, &t->option_offset);
}
static inline void
fw3_xt_print_matches(void *ip, struct xtables_rule_match *matches)
{
struct xtables_rule_match *rm;
struct xtables_match *m;
printf(" ");
for (rm = matches; rm; rm = rm->next)
{
m = rm->match;
printf("-m %s ", fw3_xt_get_match_name(m));
if (m->save)
m->save(ip, m->m);
}
}
static inline void
fw3_xt_print_target(void *ip, struct xtables_target *target)
{
if (target)
{
printf("-j %s ", fw3_xt_get_target_name(target));
if (target->save)
target->save(ip, target->t);
}
}
/* xtables api addons */
static inline void
xtables_option_mpcall(unsigned int c, char **argv, bool invert,
struct xtables_match *m, void *fw)
{
if (m->parse)
m->parse(c - m->option_offset, argv, invert, &m->mflags, fw, &m->m);
}
static inline void
xtables_option_mfcall(struct xtables_match *m)
{
if (m->final_check)
m->final_check(m->mflags);
}
static inline void
xtables_option_tpcall(unsigned int c, char **argv, bool invert,
struct xtables_target *t, void *fw)
{
if (t->parse)
t->parse(c - t->option_offset, argv, invert, &t->tflags, fw, &t->t);
}
static inline void
xtables_option_tfcall(struct xtables_target *t)
{
if (t->final_check)
t->final_check(t->tflags);
}
static inline void
xtables_rule_matches_free(struct xtables_rule_match **matches)
{
struct xtables_rule_match *mp, *tmp;
for (mp = *matches; mp;)
{
tmp = mp->next;
if (mp->match->m)
{
free(mp->match->m);
mp->match->m = NULL;
}
if (mp->match == mp->match->next)
{
free(mp->match);
mp->match = NULL;
}
free(mp);
mp = tmp;
}
*matches = NULL;
}
static inline int
xtables_ipmask_to_cidr(const struct in_addr *mask)
{
int bits;
uint32_t m;
for (m = ntohl(mask->s_addr), bits = 0; m & 0x80000000; m <<= 1)
bits++;
return bits;
}
static inline int
xtables_ip6mask_to_cidr(const struct in6_addr *mask)
{
int bits = 0;
uint32_t a, b, c, d;
a = ntohl(mask->s6_addr32[0]);
b = ntohl(mask->s6_addr32[1]);
c = ntohl(mask->s6_addr32[2]);
d = ntohl(mask->s6_addr32[3]);
while (a & 0x80000000U)
{
a <<= 1;
a |= (b >> 31) & 1;
b <<= 1;
b |= (c >> 31) & 1;
c <<= 1;
c |= (d >> 31) & 1;
d <<= 1;
bits++;
}
return bits;
}
#endif
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