| 1 | /* Useful functions for dealing with collections of IP addresses */ |
| 2 | |
| 3 | #ifndef ipaddr_h |
| 4 | #define ipaddr_h |
| 5 | |
| 6 | struct subnet { |
| 7 | uint32_t prefix; |
| 8 | uint32_t mask; |
| 9 | uint32_t len; |
| 10 | }; |
| 11 | |
| 12 | struct subnet_list { |
| 13 | uint32_t entries; |
| 14 | uint32_t alloc; |
| 15 | struct subnet *list; |
| 16 | }; |
| 17 | |
| 18 | struct iprange { |
| 19 | uint32_t a,b; |
| 20 | }; |
| 21 | |
| 22 | struct ipset { |
| 23 | uint32_t l; /* Number of entries in list */ |
| 24 | uint32_t a; /* Allocated space in list */ |
| 25 | struct iprange *d; |
| 26 | }; |
| 27 | |
| 28 | extern struct subnet_list *subnet_list_new(void); |
| 29 | extern void subnet_list_free(struct subnet_list *a); |
| 30 | extern void subnet_list_append(struct subnet_list *a, uint32_t prefix, |
| 31 | uint32_t len); |
| 32 | |
| 33 | static inline bool_t subnet_match(struct subnet s, uint32_t address) |
| 34 | { |
| 35 | return (s.prefix==(address&s.mask)); |
| 36 | } |
| 37 | |
| 38 | extern struct ipset *ipset_new(void); |
| 39 | extern void ipset_free(struct ipset *a); |
| 40 | extern struct ipset *ipset_from_subnet(struct subnet s); |
| 41 | extern struct ipset *ipset_from_subnet_list(struct subnet_list *l); |
| 42 | extern struct ipset *ipset_union(struct ipset *a, struct ipset *b); |
| 43 | extern struct ipset *ipset_intersection(struct ipset *a, struct ipset *b); |
| 44 | extern struct ipset *ipset_complement(struct ipset *a); |
| 45 | extern struct ipset *ipset_subtract(struct ipset *a, struct ipset *b); |
| 46 | extern bool_t ipset_is_empty(struct ipset *a); |
| 47 | extern bool_t ipset_contains_addr(struct ipset *a, uint32_t addr); |
| 48 | extern bool_t ipset_is_subset(struct ipset *super, struct ipset *sub); |
| 49 | extern struct subnet_list *ipset_to_subnet_list(struct ipset *is); |
| 50 | |
| 51 | extern string_t ipaddr_to_string(uint32_t addr); |
| 52 | extern string_t subnet_to_string(struct subnet sn); |
| 53 | |
| 54 | extern struct ipset *string_list_to_ipset(list_t *l,struct cloc loc, |
| 55 | string_t module,string_t param); |
| 56 | |
| 57 | extern uint32_t string_item_to_ipaddr(item_t *i, string_t desc); |
| 58 | |
| 59 | #endif /* ipaddr_h */ |