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/* Useful functions for dealing with collections of IP addresses */
/*
* This file is part of secnet.
* See README for full list of copyright holders.
*
* secnet is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* secnet is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 3 along with secnet; if not, see
* https://www.gnu.org/licenses/gpl.html.
*/
#ifndef ipaddr_h
#define ipaddr_h
struct subnet {
uint32_t prefix;
uint32_t mask;
int len;
};
struct subnet_list {
int32_t entries;
int32_t alloc;
struct subnet *list;
};
struct iprange {
uint32_t a,b;
};
struct ipset {
int32_t l; /* Number of entries in list */
int32_t a; /* Allocated space in list */
struct iprange *d;
};
extern struct subnet_list *subnet_list_new(void);
extern void subnet_list_free(struct subnet_list *a);
extern void subnet_list_append(struct subnet_list *a, uint32_t prefix, int len);
static inline bool_t subnet_match(struct subnet s, uint32_t address)
{
return (s.prefix==(address&s.mask));
}
extern struct ipset *ipset_new(void);
extern void ipset_free(struct ipset *a);
extern struct ipset *ipset_from_subnet(struct subnet s);
extern struct ipset *ipset_from_subnet_list(struct subnet_list *l);
extern struct ipset *ipset_union(struct ipset *a, struct ipset *b);
extern struct ipset *ipset_intersection(struct ipset *a, struct ipset *b);
extern struct ipset *ipset_complement(struct ipset *a);
extern struct ipset *ipset_subtract(struct ipset *a, struct ipset *b);
extern bool_t ipset_is_empty(struct ipset *a);
extern bool_t ipset_contains_addr(struct ipset *a, uint32_t addr);
extern bool_t ipset_is_subset(struct ipset *super, struct ipset *sub);
extern struct subnet_list *ipset_to_subnet_list(struct ipset *is);
extern string_t ipaddr_to_string(uint32_t addr);
extern string_t subnet_to_string(struct subnet sn);
extern struct ipset *string_list_to_ipset(list_t *l,struct cloc loc,
cstring_t module, cstring_t param);
extern uint32_t string_item_to_ipaddr(const item_t *i, cstring_t desc);
#endif /* ipaddr_h */
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