Current File : //usr/include/mysql/server/private/rpl_constants.h
/* Copyright (c) 2007 MySQL AB, 2008 Sun Microsystems, Inc.
Use is subject to license terms.
This program 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; version 2 of the License.
This program 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
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef RPL_CONSTANTS_H
#define RPL_CONSTANTS_H
#include <my_sys.h>
#include <my_crypt.h>
/**
Enumeration of the incidents that can occur for the server.
*/
enum Incident {
/** No incident */
INCIDENT_NONE = 0,
/** There are possibly lost events in the replication stream */
INCIDENT_LOST_EVENTS = 1,
/** Shall be last event of the enumeration */
INCIDENT_COUNT
};
/**
Enumeration of the reserved formats of Binlog extra row information
*/
enum ExtraRowInfoFormat {
/** Reserved formats 0 -> 63 inclusive */
ERIF_LASTRESERVED = 63,
/**
Available / uncontrolled formats
64 -> 254 inclusive
*/
ERIF_OPEN1 = 64,
ERIF_OPEN2 = 65,
ERIF_LASTOPEN = 254,
/**
Multi-payload format 255
Length is total length, payload is sequence of
sub-payloads with their own headers containing
length + format.
*/
ERIF_MULTI = 255
};
/*
1 byte length, 1 byte format
Length is total length in bytes, including 2 byte header
Length values 0 and 1 are currently invalid and reserved.
*/
#define EXTRA_ROW_INFO_LEN_OFFSET 0
#define EXTRA_ROW_INFO_FORMAT_OFFSET 1
#define EXTRA_ROW_INFO_HDR_BYTES 2
#define EXTRA_ROW_INFO_MAX_PAYLOAD (255 - EXTRA_ROW_INFO_HDR_BYTES)
enum enum_binlog_checksum_alg {
BINLOG_CHECKSUM_ALG_OFF= 0, // Events are without checksum though its generator
// is checksum-capable New Master (NM).
BINLOG_CHECKSUM_ALG_CRC32= 1, // CRC32 of zlib algorithm.
BINLOG_CHECKSUM_ALG_ENUM_END, // the cut line: valid alg range is [1, 0x7f].
BINLOG_CHECKSUM_ALG_UNDEF= 255 // special value to tag undetermined yet checksum
// or events from checksum-unaware servers
};
#define BINLOG_CRYPTO_SCHEME_LENGTH 1
#define BINLOG_KEY_VERSION_LENGTH 4
#define BINLOG_IV_LENGTH MY_AES_BLOCK_SIZE
#define BINLOG_IV_OFFS_LENGTH 4
#define BINLOG_NONCE_LENGTH (BINLOG_IV_LENGTH - BINLOG_IV_OFFS_LENGTH)
struct Binlog_crypt_data {
uint scheme;
uint key_version, key_length, ctx_size;
uchar key[MY_AES_MAX_KEY_LENGTH];
uchar nonce[BINLOG_NONCE_LENGTH];
int init(uint sch, uint kv)
{
scheme= sch;
ctx_size= encryption_ctx_size(ENCRYPTION_KEY_SYSTEM_DATA, kv);
key_version= kv;
key_length= sizeof(key);
return encryption_key_get(ENCRYPTION_KEY_SYSTEM_DATA, kv, key, &key_length);
}
void set_iv(uchar* iv, uint32 offs) const
{
memcpy(iv, nonce, BINLOG_NONCE_LENGTH);
int4store(iv + BINLOG_NONCE_LENGTH, offs);
}
};
#endif /* RPL_CONSTANTS_H */
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