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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*-
* Copyright 2016 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "config.h"
#include "rspamd.h"
#include "keypairs_cache.h"
#include "keypair_private.h"
#include "hash.h"
struct rspamd_keypair_elt {
struct rspamd_cryptobox_nm *nm;
guchar pair[rspamd_cryptobox_HASHBYTES * 2];
};
struct rspamd_keypair_cache {
rspamd_lru_hash_t *hash;
};
static void
rspamd_keypair_destroy (gpointer ptr)
{
struct rspamd_keypair_elt *elt = (struct rspamd_keypair_elt *)ptr;
REF_RELEASE (elt->nm);
g_slice_free1 (sizeof (*elt), elt);
}
static guint
rspamd_keypair_hash (gconstpointer ptr)
{
struct rspamd_keypair_elt *elt = (struct rspamd_keypair_elt *)ptr;
return rspamd_cryptobox_fast_hash (elt->pair, sizeof (elt->pair),
rspamd_hash_seed ());
}
static gboolean
rspamd_keypair_equal (gconstpointer p1, gconstpointer p2)
{
struct rspamd_keypair_elt *e1 = (struct rspamd_keypair_elt *)p1,
*e2 = (struct rspamd_keypair_elt *)p2;
return memcmp (e1->pair, e2->pair, sizeof (e1->pair)) == 0;
}
struct rspamd_keypair_cache *
rspamd_keypair_cache_new (guint max_items)
{
struct rspamd_keypair_cache *c;
g_assert (max_items > 0);
c = g_slice_alloc (sizeof (*c));
c->hash = rspamd_lru_hash_new_full (max_items, NULL,
rspamd_keypair_destroy, rspamd_keypair_hash, rspamd_keypair_equal);
return c;
}
void
rspamd_keypair_cache_process (struct rspamd_keypair_cache *c,
struct rspamd_cryptobox_keypair *lk,
struct rspamd_cryptobox_pubkey *rk)
{
struct rspamd_keypair_elt search, *new;
g_assert (lk != NULL);
g_assert (rk != NULL);
g_assert (rk->alg == lk->alg);
g_assert (rk->type == lk->type);
g_assert (rk->type == RSPAMD_KEYPAIR_KEX);
memset (&search, 0, sizeof (search));
memcpy (search.pair, rk->id, rspamd_cryptobox_HASHBYTES);
memcpy (&search.pair[rspamd_cryptobox_HASHBYTES], lk->id,
rspamd_cryptobox_HASHBYTES);
new = rspamd_lru_hash_lookup (c->hash, &search, time (NULL));
if (rk->nm) {
REF_RELEASE (rk->nm);
rk->nm = NULL;
}
if (new == NULL) {
new = g_slice_alloc0 (sizeof (*new));
if (posix_memalign ((void **)&new->nm, 32, sizeof (*new->nm)) != 0) {
abort ();
}
REF_INIT_RETAIN (new->nm, rspamd_cryptobox_nm_dtor);
memcpy (new->pair, rk->id, rspamd_cryptobox_HASHBYTES);
memcpy (&new->pair[rspamd_cryptobox_HASHBYTES], lk->id,
rspamd_cryptobox_HASHBYTES);
if (rk->alg == RSPAMD_CRYPTOBOX_MODE_25519) {
struct rspamd_cryptobox_pubkey_25519 *rk_25519 =
RSPAMD_CRYPTOBOX_PUBKEY_25519(rk);
struct rspamd_cryptobox_keypair_25519 *sk_25519 =
RSPAMD_CRYPTOBOX_KEYPAIR_25519(lk);
rspamd_cryptobox_nm (new->nm->nm, rk_25519->pk, sk_25519->sk, rk->alg);
}
else {
struct rspamd_cryptobox_pubkey_nist *rk_nist =
RSPAMD_CRYPTOBOX_PUBKEY_NIST(rk);
struct rspamd_cryptobox_keypair_nist *sk_nist =
RSPAMD_CRYPTOBOX_KEYPAIR_NIST(lk);
rspamd_cryptobox_nm (new->nm->nm, rk_nist->pk, sk_nist->sk, rk->alg);
}
rspamd_lru_hash_insert (c->hash, new, new, time (NULL), -1);
}
g_assert (new != NULL);
rk->nm = new->nm;
REF_RETAIN (rk->nm);
}
void
rspamd_keypair_cache_destroy (struct rspamd_keypair_cache *c)
{
if (c != NULL) {
rspamd_lru_hash_destroy (c->hash);
g_slice_free1 (sizeof (*c), c);
}
}
|
