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/*
* Copyright 2023 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.
*/
#ifndef RSPAMD_FUZZY_STORAGE_H
#define RSPAMD_FUZZY_STORAGE_H
#include "config.h"
#include "rspamd.h"
#include "shingles.h"
#include "cryptobox.h"
#ifdef __cplusplus
extern "C" {
#endif
#define RSPAMD_FUZZY_VERSION 4
#define RSPAMD_FUZZY_KEYLEN 8
#define RSPAMD_FUZZY_FLAG_WEAK (1u << 7u)
/* Use lower 4 bits for the version */
#define RSPAMD_FUZZY_VERSION_MASK 0x0fu
/* Commands for fuzzy storage */
#define FUZZY_CHECK 0
#define FUZZY_WRITE 1
#define FUZZY_DEL 2
#define FUZZY_STAT 3
#define FUZZY_PING 4
#define FUZZY_CLIENT_MAX 4
/* Internal commands */
#define FUZZY_REFRESH 100 /* Update expire */
#define FUZZY_DUP 101 /* Skip duplicate in update queue */
/**
* The epoch of the fuzzy client
*/
enum rspamd_fuzzy_epoch {
RSPAMD_FUZZY_EPOCH10, /**< 1.0+ encryption */
RSPAMD_FUZZY_EPOCH11, /**< 1.7+ extended reply */
RSPAMD_FUZZY_EPOCH_MAX
};
RSPAMD_PACKED(rspamd_fuzzy_cmd)
{
guint8 version;
guint8 cmd;
guint8 shingles_count;
guint8 flag;
gint32 value;
guint32 tag;
gchar digest[rspamd_cryptobox_HASHBYTES];
};
RSPAMD_PACKED(rspamd_fuzzy_shingle_cmd)
{
struct rspamd_fuzzy_cmd basic;
struct rspamd_shingle sgl;
};
RSPAMD_PACKED(rspamd_fuzzy_reply_v1)
{
gint32 value;
guint32 flag;
guint32 tag;
float prob;
};
RSPAMD_PACKED(rspamd_fuzzy_reply)
{
struct rspamd_fuzzy_reply_v1 v1;
gchar digest[rspamd_cryptobox_HASHBYTES];
guint32 ts;
guchar reserved[12];
};
RSPAMD_PACKED(rspamd_fuzzy_encrypted_req_hdr)
{
guchar magic[4];
guchar key_id[RSPAMD_FUZZY_KEYLEN];
guchar pubkey[32];
guchar nonce[rspamd_cryptobox_MAX_NONCEBYTES];
guchar mac[rspamd_cryptobox_MAX_MACBYTES];
};
RSPAMD_PACKED(rspamd_fuzzy_encrypted_cmd)
{
struct rspamd_fuzzy_encrypted_req_hdr hdr;
struct rspamd_fuzzy_cmd cmd;
};
RSPAMD_PACKED(rspamd_fuzzy_encrypted_shingle_cmd)
{
struct rspamd_fuzzy_encrypted_req_hdr hdr;
struct rspamd_fuzzy_shingle_cmd cmd;
};
RSPAMD_PACKED(rspamd_fuzzy_encrypted_rep_hdr)
{
guchar nonce[rspamd_cryptobox_MAX_NONCEBYTES];
guchar mac[rspamd_cryptobox_MAX_MACBYTES];
};
RSPAMD_PACKED(rspamd_fuzzy_encrypted_reply)
{
struct rspamd_fuzzy_encrypted_rep_hdr hdr;
struct rspamd_fuzzy_reply rep;
};
static const guchar fuzzy_encrypted_magic[4] = {'r', 's', 'f', 'e'};
enum rspamd_fuzzy_extension_type {
RSPAMD_FUZZY_EXT_SOURCE_DOMAIN = 'd',
RSPAMD_FUZZY_EXT_SOURCE_IP4 = '4',
RSPAMD_FUZZY_EXT_SOURCE_IP6 = '6',
};
struct rspamd_fuzzy_cmd_extension {
enum rspamd_fuzzy_extension_type ext;
guint length;
struct rspamd_fuzzy_cmd_extension *next;
guchar *payload;
};
struct rspamd_fuzzy_stat_entry {
const gchar *name;
guint64 fuzzy_cnt;
};
RSPAMD_PACKED(fuzzy_peer_cmd)
{
gint32 is_shingle;
union {
struct rspamd_fuzzy_cmd normal;
struct rspamd_fuzzy_shingle_cmd shingle;
} cmd;
};
#ifdef __cplusplus
}
#endif
#endif
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