1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
#ifndef __RSPAMD_BLOOM_H__
#define __RSPAMD_BLOOM_H__
#include "config.h"
typedef guint (*hashfunc_t) (const gchar *);
typedef struct bloom_filter_s {
size_t asize;
gchar *a;
size_t nfuncs;
hashfunc_t *funcs;
} bloom_filter_t;
/* Hash functions */
guint bloom_sax_hash (const gchar *key);
guint bloom_sdbm_hash (const gchar *key);
guint bloom_fnv_hash (const gchar *key);
guint bloom_rs_hash (const gchar *key);
guint bloom_js_hash (const gchar *key);
guint bloom_elf_hash (const gchar *key);
guint bloom_bkdr_hash (const gchar *key);
guint bloom_ap_hash (const gchar *key);
#define DEFAULT_BLOOM_HASHES 8, bloom_sax_hash, bloom_sdbm_hash, bloom_fnv_hash, bloom_rs_hash, bloom_js_hash, bloom_elf_hash, bloom_bkdr_hash, bloom_ap_hash
/*
* Create new bloom filter
* @param size length of bloom buffer
* @param nfuncs number of hash functions
* @param ... hash functions list
*/
bloom_filter_t* bloom_create (size_t size, size_t nfuncs, ...);
/*
* Destroy bloom filter
*/
void bloom_destroy (bloom_filter_t * bloom);
/*
* Add a string to bloom filter
*/
gboolean bloom_add (bloom_filter_t * bloom, const gchar *s);
/*
* Delete a string from bloom filter
*/
gboolean bloom_del (bloom_filter_t * bloom, const gchar *s);
/*
* Check whether this string is in bloom filter (algorithm produces FALSE-POSITIVES, so result must be checked if it is positive)
*/
gboolean bloom_check (bloom_filter_t * bloom, const gchar *s);
#endif
|